217 results on '"Vittoria, V"'
Search Results
2. Influence of time and temperature on deformed films of poly ether-ether-ketone (PEEK)
- Author
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D'Aniello, C, Romano, G, Russo, R, and Vittoria, V
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- 2000
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3. RECYCLING POLYETHYLENE FROM AUTOMOTIVE FUEL THANKS
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ACIERNO, DOMENICO, GORRASI G., DI MAIO L., VITTORIA V., Acierno, Domenico, Gorrasi, G., DI MAIO, L., and Vittoria, V.
- Published
- 2002
4. CAST-EXTRUDED SYNDIOTACTIC POLYPROPYLENE FILMS: PRELIMINARY STRUCTURAL AND MECHANICAL RESULTS
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GUADAGNO L., NADDEO C., DI MAIO L., VITTORIA V., ACIERNO, DOMENICO, Acierno, Domenico, Guadagno, L., Naddeo, C., DI MAIO, L., and Vittoria, V.
- Published
- 2002
5. Preparation, Characterization and Antibacterial Activity of Poly(epsilon-caprolactone) Electrospun Fibers Loaded with Amoxicillin for Controlled Release in Biomedical Applications
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Malagon Aviles, O., Cartuche Flores, L., Vittoria, V., Stanzione, M., Valarezo Valdez, B., and Tammaro, L.
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amoxicillin ,antibacterial activity ,caprolactone) ,nanofibers ,poly(e ,electrospinning - Abstract
Amoxicillin (AMOX) was successfully encapsulated at different concentrations into poly(caprolactone) (PCL) by the electrospinning technique, and mats of non-woven fibers were obtained and characterized in terms of morphology, in vitro release and antibacterial properties. The scanning electron microscopy evidenced the nanofibrous structure of the pristine PCL, composed of individual, uniform, and randomly oriented fibres with an average diameter ranging around 0.8 micron. The addition of amoxicillin at different concentrations (3, 5 and 7) did not evidence change in the fiber morphology. The release curves, for all samples, present mainly two stages: a first stage, quick as a burst, is followed by a second slow stage. The burst was analyzed as a function of amoxicillin concentration and thickness of the membranes, and values corresponding to absence of burst were individuated. In the second stage the release was found very slow extending up to months for the most concentrated sample. The antibacterial activity of the electrospun fibers was effective to inhibit in different proportions Staphylococcus aureus, Enterococcus faecalis and Escherichia coli. The properties of the filled membranes and their capability for local delivery of antibiotics make them suitable for biomedical applications.
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- 2012
6. A DSC study of thermal transitions of apple systems at several water content
- Author
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BARRA G, DI MATTEO P, VITTORIA V, SESTI OSSEO L, CESARO, ATTILIO, Barra, G, DI MATTEO, P, Vittoria, V, SESTI OSSEO, L, and Cesaro, Attilio
- Abstract
J. THERMAL ANAL. CALORIM.
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- 2000
7. Mechanical and transport properties of irradiated linear and low density polyethylene films (LLDPE)
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Naddeo, C, Guadagno, L, DE LUCA, S, Vittoria, V, and Camino, Giovanni
- Published
- 2001
8. Chemical and morphological modifications of irradiated linear and low density polyethylene films (LLDPE)
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Guadagno, L, Naddeo, C, Vittoria, V, and Camino, Giovanni
- Published
- 2001
9. Influence of multi-walled carbon nanotubes on the β form crystallization of syndiotactic polystyrene at low temperature
- Author
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Sorrentino, A., primary, Vertuccio, L., additional, and Vittoria, V., additional
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- 2010
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10. Influence of the crystallinity on the transport properties of polyethylene
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Vittoria, V., primary
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- 1995
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11. Crystallinity of isotactic polypropylene films annealed from the quenched state
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Natale, R., primary, Russo, R., additional, and Vittoria, V., additional
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- 1992
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12. Molecular orientation in drawn smectic and crystalline isotactic polypropylene.
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De Candia, F., Russo, R., Vittoria, V., and Iannelli, P.
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- 1988
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13. Effect of resveratrol release kinetic from electrospun nanofibers on osteoblast and osteoclast differentiation
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Vittoria Vittoria, Adriana De Luise, Anna Di Salle, Anna Calarco, Francesco Riccitiello, Gianfranco Peluso, Sharon D’Aniello, Raffaele Conte, Riccitiello, F., De Luise, A. b., Conte, R. b., D'Aniello, S. C., Vittoria, V. C., Di Salle, A. B., Calarco, A. B., and Peluso, G.
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Polymers and Plastics ,General Physics and Astronomy ,02 engineering and technology ,resveratrol ,Resveratrol ,Bone resorption ,Bone remodeling ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Osteoclast ,Dental pulp stem cells ,Materials Chemistry ,medicine ,Alveolar bone defect Electrospinning Osteoblast differentiation Osteoclast differentiation Resveratrol ,osteoclast differentiation ,Chemistry ,Organic Chemistry ,Osteoblast ,030206 dentistry ,respiratory system ,021001 nanoscience & nanotechnology ,In vitro ,Membrane ,medicine.anatomical_structure ,electrospun nanofibers ,osteoblast differentiation ,Biophysics ,0210 nano-technology - Abstract
Resveratrol (RSV) has been shown to exhibit many biological properties that can influence bone osteogenesis. However, RSV oral clinical treatment is limited due to its poor pharmacokinetics, low water solubility, and rapid metabolism. Therefore, it is necessary to develop a valid delivery system to release RSV directly into the target site. Electrospun drug-eluting fibers have gained great attention in the regenerative dentistry due to the ease of fabrication, the high surface to volume ratio and the drug-loading efficiency. The post-extraction preservation of the alveolar socket requires to operate on the bone remodeling processes both by stimulation of bone formation by osteoblasts and inhibition of osteoclast-mediated bone resorption. In this work, uniform defect-free fibers of poly(e-caprolactone) PCL and poly(lactic) acid (PLA) loading resveratrol were synthetized and characterized. In vitro assay demonstrated that the two membranes were able to release RSV in a tunable and sustained manner with different kinetic: PCL-RSV membrane showed an initial burst followed by a slow release, while PLA-RSV presented a much slower and continuous release over the time. Although both RSV-loaded materials showed similar in vitro osteoinductive capacity on human dental pulp stem cells, the differences on RSV release kinetic affected RANKL-induced osteoclastogenesis. Indeed, only the lower resveratrol-releasing membrane (PLA-RSV) was able both to induce osteoblast and to inhibit osteoclast differentiation, suggesting that this bioactive membrane could be used to preserve post-extraction alveolar ridge volume acting simultaneously on two fronts: first counteract bone resorption, second allows new bone formation.
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- 2018
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14. Multifunctional Bioactive Resin for Dental Restorative Materials
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Francesco Riccitiello, Gianfranco Peluso, Ilenia De Luca, Anna Calarco, Andrea Sorrentino, Loredana Tammaro, Anna Di Salle, Vittoria Vittoria, Tammaro, L., Di Salle, A., Calarco, A., De Luca, I., Riccitiello, F., Peluso, G., Vittoria, V., and Sorrentino, A.
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layered double hydroxide ,Saliva ,Polymers and Plastics ,calcium bentonite ,020101 civil engineering ,02 engineering and technology ,Article ,0201 civil engineering ,lcsh:QD241-441 ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,lcsh:Organic chemistry ,stomatognathic system ,Staphylococcus epidermidis ,Dental pulp stem cells ,dental materials ,antibiofilm activity ,Restorative dentistry ,composite resin ,Inert ,biology ,030206 dentistry ,General Chemistry ,biology.organism_classification ,chemistry ,Bentonite ,Hydroxide ,Fluoride ,Nuclear chemistry - Abstract
Resin-based composites are widely used as dental restorative materials due to their excellent properties. They must have high modulus, high hardness, and be chemically inert while minimizing moisture uptake. To fulfill these higher standard prerequisites and properties, continuous improvements in each of their components are required. This study develops novel composites with multiple biofunctions. Light-cured Bis-GMA/TEGDMA dental resin (RK)/layered double hydroxide intercalated with fluoride ions (LDH-F)/calcium bentonite (Bt) hybrid composites were prepared. The loading ratio of LDH-F to Bt was varied, ranging from 2.5/2.5 to 10/10 parts per hundred RK and structural, mechanical, and biological properties were studied. The incorporation of even small mass fractions (e.g., 2.5 wt % of LDH-F and 2.5 wt % of Bt) in RK dental resin significantly improved the mechanical properties of the pristine resin. The synthetized materials showed antibacterial and antibiofilm effects against three bacterial strains isolated from healthy volunteers&rsquo, saliva (Streptococcus spp., Bacteroides fragilis, and Staphylococcus epidermidis) without affecting its ability to induce dental pulp stem cells differentiation into odontoblast-like cells. The capability to balance between the antibiofilm activity and dental pulp stem cells differentiation in addition with improved mechanical properties make these materials a promising strategy in preventive and restorative dentistry.
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- 2020
15. Long-Term Fluoride Release from Dental Resins Affects STRO-1+ Cell Behavior
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Loredana Tammaro, O Petillo, Francesco Riccitiello, Gianfranco Peluso, A Di Salle, I. De Luca, Anna Calarco, Vittoria Vittoria, S. Mucerino, Calarco, A, Di Salle, A, Tammaro, L, De Luca, I, Mucerino, S, Petillo, O, Riccitiello, Francesco, Vittoria, V, and Peluso, G.
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cell migration ,Dentistry ,Aluminum Hydroxide ,fluoride-releasing material ,Fluorides ,chemistry.chemical_compound ,Cell Movement ,Dentin ,Cells, Cultured ,Extracellular Matrix Proteins ,fluoride-releasing materials ,biology ,Stem Cells ,Cell Differentiation ,differentiation ,Cariostatic Agents ,restorative materials ,Phenotype ,medicine.anatomical_structure ,odontogenesi ,pulp stem cells ,Osteocalcin ,odontogenesis ,Fluoride ,Dentin sialoprotein ,Magnesium Hydroxide ,Sialoglycoproteins ,Real-Time Polymerase Chain Reaction ,Transforming Growth Factor beta1 ,Dental Materials ,stomatognathic system ,Dental pulp stem cells ,medicine ,Humans ,General Dentistry ,Dental Pulp ,Glycoproteins ,business.industry ,Saliva, Artificial ,Phosphoproteins ,Chemokine CXCL12 ,DMP1 ,Kinetics ,stomatognathic diseases ,chemistry ,biology.protein ,MEPE ,Biophysics ,Pulp (tooth) ,pulp stem cell ,business - Abstract
Fluoride-releasing restorative dental materials can be beneficial to remineralize dentin and help prevent secondary caries. However, the effects of fluoride release from dental materials on the activity of dental pulp stem cells are not known. Here we investigate whether different fluoride release kinetics from dental resins supplemented with modified hydrotalcite (RK-F10) or fluoride-glass filler (RK-FG10) could influence the behavior of a human dental pulp stem cell subpopulation (STRO-1+ cells) known for its ability to differentiate toward an odontoblast-like phenotype. The 2 resins, characterized by similar physicochemical properties and fluoride content, exhibited different long-term fluoride release kinetics. Our data demonstrate that long-term exposure of STRO-1+ cells to a continuous release of a low amount of fluoride by RK-F10 increases their migratory response to transforming growth factor β1 (TGF-β1) and stromal cell–derived factor 1 (SDF-1), both important promoters of pulp stem cell recruitment. Moreover, the expression patterns of dentin sialoprotein ( dspp), dentin matrix protein 1 ( dmp1), osteocalcin ( ocn), and matrix extracellular phosphoglycoprotein ( mepe) indicate a complete odontoblast-like cell differentiation only when STRO-1+ cells were cultured on RK-F10. On the contrary, RK-FG10, characterized by an initial fluoride release burst and reduced lifetime of the delivery, did not elicit any significant effect on both STRO-1+ cell migration and differentiation. Taken together, our results highlight the importance of taking into account fluoride release kinetics in addition to fluoride concentration when designing new fluoride-restorative materials.
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- 2015
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16. Influence of multi-walled carbon nanotubes on the β form crystallization of syndiotactic polystyrene at low temperature
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Luigi Vertuccio, Vittoria Vittoria, Andrea Sorrentino, Sorrentino, A, Vertuccio, L, and Vittoria, V
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Materials science ,nanocomposite ,Polymers and Plastics ,General Chemical Engineering ,Organic Chemistry ,Nucleation ,Carbon nanotube ,Dynamic mechanical analysis ,syndiotactic polystyrene ,law.invention ,Crystallinity ,chemistry.chemical_compound ,multi-wall carbon nanotube ,Differential scanning calorimetry ,Chemical engineering ,chemistry ,law ,Tacticity ,morphology ,Materials Chemistry ,polymer crystallization ,Polystyrene ,Physical and Theoretical Chemistry ,Crystallization ,Composite material - Abstract
Syndiotactic polystyrene (sPS) samples were quenched at low temperature (0 degrees C) in the presence of Multi-Walled Carbon Nanotubes (MWCNT) at different concentrations. The influence of carbon nanotubes on the structure and physical properties of sPS composites was investigated by SEM, X-ray diffractograms, DSC (Differential Scanning Calorimetry), and Dynamic Mechanical Analysis (DMA). A good dispersion of the carbon nanotubes in the sPS matrix was found, at least for the low MWCNT concentration, whereas opposite effects were noticed on T-g and elastic modulus, depending on concentration. The pristine sPS sample was almost amorphous at 0 degrees C, whereas in the filled samples the crystallinity increased on increasing the MWCNT concentration, indicating a strong nucleation effect of the nanotubes. Interestingly, in spite of the low temperature, the beta crystallinity was induced and this crystalline form increases on increasing the carbon nanotube concentration, being dominant (68% of the total crystallinity) already at 3 wt% of MWCNT concentration.
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- 2010
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17. Recycling polyethylene from automotive fuel tanks
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Luciano Di Maio, Vittoria Vittoria, Giuliana Gorrasi, Domenico Acierno, Gorrasi, G., DI MAIO, L., Vittoria, V., and Acierno, Domenico
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chemistry.chemical_classification ,business.product_category ,Materials science ,Polymers and Plastics ,Rheometry ,Plastics extrusion ,General Chemistry ,Carbon black ,Polymer ,Polyethylene ,Surfaces, Coatings and Films ,chemistry.chemical_compound ,Rheology ,chemistry ,Materials Chemistry ,Die (manufacturing) ,Extrusion ,Composite material ,business - Abstract
Polyethylene (PE) from postuse automotive fuel tanks is considered a valuable material for mechanical recycling, and we assessed its properties, paying particular attention to transport properties and processability. The characterization included the study of the sorption-desorption isotherms, the rheological analysis of the molten materials and their processability. In particular, we obtained, sorption-desorption isotherms using a model molecule (n-heptane) to simulate contact with the fuel. The measurements were carried out on films of PE blend for tanks and separately on the components of the blend. Rotational rheometry was carried out on scraps from used tanks and on virgin material for comparison. We performed some extrusion tests to evaluate the possibility of mechanical recycling of the postuse materials. In particular, we examined the melt-fracture incoming conditions by making use of a twinscrew extruder with a round die. Stress-strain measurements were carried out on films of virgin and used material, obtained with a press on a laboratory scale to evaluate the change of the mechanical properties of a manufacture obtained by reprocessing a polymer aged in contact with a mixture of liquids.
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- 2002
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18. Effect of layered double hydroxide intercalated with fluoride ions on the physical, biological and release properties of a dental composite resin
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Orsolina Petillo, Francesco Riccitiello, Anna Calarco, Gianfranco Peluso, Loredana Tammaro, Vittoria Vittoria, Tammaro, L, Vittoria, V, Calarco, A, Perillo, O, Riccitiello, F, and Peluso, G.
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Materials science ,Magnesium Hydroxide ,Adolescent ,Dental materials, Composite resin,Layered double hydroxide, Fluoride release, Cell proliferation ,Inorganic chemistry ,Aluminum Hydroxide ,Composite Resins ,Polyethylene Glycols ,Matrix (chemical analysis) ,Diffusion ,chemistry.chemical_compound ,Dental Materials ,Fluorides ,Young Adult ,Polymethacrylic Acids ,X-Ray Diffraction ,Dental pulp stem cells ,Spectroscopy, Fourier Transform Infrared ,Hydroxides ,Humans ,Bisphenol A-Glycidyl Methacrylate ,General Dentistry ,Cells, Cultured ,Dental Pulp ,Cell Proliferation ,Hydrotalcite ,Ion exchange ,Elution ,Stem Cells ,Temperature ,Cell Differentiation ,Alkaline Phosphatase ,Cell proliferation ,Composite resin ,Dental materials ,Fluoride release ,Layered double hydroxide ,Cariostatic Agents ,Ion Exchange ,chemistry ,Delayed-Action Preparations ,Hydroxide ,Alkaline phosphatase ,Methacrylates ,Stress, Mechanical ,Fluoride - Abstract
Objectives The aim of this work was the preparation of a new fluoride-releasing dental material characterized by a release of fluoride relatively constant over time without any initial toxic burst effect. This type of delivery is obtained by a matrix controlled elution and elicits the beneficial effect of a low amount of fluoride on human dental pulp stem cells (hDPSCs) towards mature phenotype. Methods The modified hydrotalcite intercalated with fluoride ions (LDH-F), used as filler, was prepared via ion exchange procedure and characterized by X-ray diffraction and FT-IR spectroscopy. The LDH-F inorganic particles (0.7, 5, 10, 20 wt.%) were mixed with a photo-activated Bis-GMA/TEGDMA (45/55 wt/wt) matrix and novel visible-light cured composites were prepared. The dynamic thermo-mechanical properties were determined by dynamic mechanical analyzer. The release of fluoride ions in physiological solution was determined using a ionometer. Total DNA content was measured by a PicoGreen dsDNA quantification kit to assess the proliferation rate of hDPSCs. Alkaline phosphatase activity (ALP) was measured in presence of fluoride resins. Results Incorporation of even small mass fractions ( e.g. 0.7 and 5 wt.%) of the fluoride LDH in Bis-GMA/TEGDMA dental resin significantly improved the mechanical properties of the pristine resin, in particular at 37 °C. The observed reinforcement increases on increasing the filler concentration. The release of fluoride ions resulted very slow, lasting months. ALP activity gradually increased for 28 days in hDPSCs cell grown, demonstrating that low concentrations of fluoride contributed to the cell differentiation. Conclusions The prepared composites containing different amount of hydrotalcite filler showed improved mechanical properties, slow fluoride release and promoted hDPSCs cell proliferation and cell differentiation.
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- 2013
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19. Enhanced in vitro antitumor activity of a titanocene complex encapsulated into polycaprolactone (PCL) electrospun fibers
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Gianfranco Peluso, Anna Calarco, Orsolina Petillo, Pasquale Longo, Mariamelia Stanzione, Vittoria Vittoria, Eduardo Valarezo, Mariagrazia Napoli, Francesco Riccitiello, Stanzione, M, Petillo, O, Calarco, A, Valarezo, E, Napoli, M, Longo, P, Riccitiello, Francesco, Vittoria, V, and Peluso, G.
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Materials science ,Cell Survival ,Drug Compounding ,Polyesters ,Nanofibers ,Biomedical Engineering ,Biophysics ,Antineoplastic Agents ,Bioengineering ,Biomaterials ,chemistry.chemical_compound ,Organometallic Compounds ,Tumor Cells, Cultured ,Humans ,Nanotechnology ,Fiber ,Composite material ,Antitumor activity ,Electrochemical Techniques ,General Medicine ,In vitro ,Polyester ,chemistry ,Delayed-Action Preparations ,Nanofiber ,Polycaprolactone ,Drug delivery ,Cancer cell ,Glioblastoma - Abstract
Purpose The purpose of this work was to achieve detailed biomaterials characterization of a drug delivery system for local cancer treatment based on electrospun titanocene trichloride-loaded resorbable polycaprolactone (PCL) fibers. Methods The PCL fibers were characterized for their structural, morphologic and physical properties. The drug release kinetics of the titanocene complex was investigated at different concentrations, to obtain a set of correlations between structure and tuneable release. After exposing cancer cells directly onto the surface of PCL fibers, the anti-proliferative effects of titanocene-loaded PCL were assessed by: (i) counting viable cells via live/dead staining methods, and (ii) analyzing cell apoptosis. Results and Conclusions Titanocene concentration influenced fiber diameters reduced for PCL filled with titanocene. X-ray analysis suggested that the titanocene, encapsulated into the PCL fibers, is not allowed to crystallize and exists as amorphous aggregates into the fibers. The titanocene release curves presented two stages unrelated to PCL degradation: an initial burst release followed by a release linear with time, extending for a very long time. All of the titanocene-loaded fibers revealed sustained drug release properties suggesting their potential clinical applicability for the treatment of local cancer diseases.
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- 2013
20. Anti-inflammatory drug incorporation into polymeric nano-hybrids for local controlled release
- Author
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Sammartino, G., Marenzi, G., Tammaro, L., Bolognese, A., Calignano, A., Costantino, U., Califano, L., Mastrangelo, F., Tetè, S., Vittoria Vittoria, Sammartino, G, Marenzi, G, Tammaro, L, Bolognese, A, Calignano, A, Costantino, U, Califano, L, Mastrangelo, Filiberto, Tete', S, Vittoria, V., Sammartino, Gilberto, Marenzi, Gaetano, Tammaro, L., Bolognese, Adele, Calignano, Antonio, Costantino, U., Califano, Luigi, Mastrangelo, F., and Tete, S.
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drug controlled release ,ANTI-INFLAMMATORY DRUG ,polymeric nano-hybrid - Abstract
Newpolymeric composite materials containing a nanohybrid to be used for the controlled release of an antibiotic molecule, chloramphenicol succinate, have been formulated, prepared and characterised. The nanohybrid consists of a layered double hydroxide of Mg–Al hydrotalcitetype, in which the nitrate anions present in the host galleries were replaced with chloramphenicol succinate anions (CFS−) by a simple ion-exchange reaction. Different amounts of the hybrid material were incorporated in polycaprolactone and processed as films of 0.15mm thickness. The composite materials were analysed by X-ray diffractometry and thermogravimetry and their mechanical properties were determined. They showed properties even better than those of the pristine polymer. The release process of the antibiotic molecules was found to be very interesting and promising for tuneable drug delivery. It consists of two stages: an initial stage of a very rapid burst, in which a small fraction of drug is released; and a second stage that is much slower, extending for a longer and longer time. This behaviour is profoundly different and much slower than that of a sample in which the antibiotic molecule is directly incorporated into the polymeric matrix. The parameters influencing drug release have been individuated and discussed.
- Published
- 2007
21. Nanohybrids for controlled antibiotic release in topical applications
- Author
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Loredana Tammaro, Stefano Tetè, Filiberto Mastrangelo, Antonio Calignano, Luigi Califano, Gaetano Marenzi, Vittoria Vittoria, Gilberto Sammartino, Umberto Costantino, Adele Bolognese, Tammaro, L, Costantino, U, Bolognese, A, Sammartino, G, Marenzi, G, Calignano, A, Tete', S, Mastrangelo, Filiberto, Califano, L, Vittoria, V., Bolognese, Adele, Sammartino, Gilberto, Marenzi, Gaetano, Calignano, Antonio, Tet, S, Mastrangelo, Fulvio, and Califano, Luigi
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Microbiology (medical) ,Administration, Topical ,Nanotechnology ,Mechanics ,Dosage form ,chemistry.chemical_compound ,X-Ray Diffraction ,Pharmacology (medical) ,Antibacterial agent ,chemistry.chemical_classification ,Drug Carriers ,Nanohybrids ,General Medicine ,Polymer ,Controlled release ,Anti-Bacterial Agents ,Nanostructures ,Thermogravimetry ,Infectious Diseases ,Chloramphenicol ,chemistry ,Chemical engineering ,Delayed-Action Preparations ,Drug delivery ,Polycaprolactone ,Thermodynamics ,controlled antibiotic release ,Drug carrier ,Aluminum - Abstract
New polymeric composite materials containing a nanohybrid to be used for the controlled release of an antibiotic molecule, chloramphenicol succinate, have been formulated, prepared and characterised. The nanohybrid consists of a layered double hydroxide of Mg-Al hydrotalcite-type, in which the nitrate anions present in the host galleries were replaced with chloramphenicol succinate anions (CFS(-)) by a simple ion-exchange reaction. Different amounts of the hybrid material were incorporated in polycaprolactone and processed as films of 0.15mm thickness. The composite materials were analysed by X-ray diffractometry and thermogravimetry and their mechanical properties were determined. They showed properties even better than those of the pristine polymer. The release process of the antibiotic molecules was found to be very interesting and promising for tuneable drug delivery. It consists of two stages: an initial stage of a very rapid burst, in which a small fraction of drug is released; and a second stage that is much slower, extending for a longer and longer time. This behaviour is profoundly different and much slower than that of a sample in which the antibiotic molecule is directly incorporated into the polymeric matrix. The parameters influencing drug release have been individuated and discussed.
- Published
- 2006
22. Use of an alternative colorant for polyethylene fuel tanks recycling
- Author
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Giuliana Gorrasi, Vittoria Vittoria, Domenico Acierno, Luciano Di Maio, Gorrasi, G., DI MAIO, L., Vittoria, V., and Acierno, Domenico
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chemistry.chemical_classification ,Materials science ,Polymers and Plastics ,Waste management ,General Chemical Engineering ,Organic Chemistry ,Sorption ,Carbon black ,Dynamic mechanical analysis ,Polyethylene ,Liquid fuel ,Viscosity ,chemistry.chemical_compound ,Hydrocarbon ,chemistry ,Desorption ,Materials Chemistry ,Composite material - Abstract
A black colorant alternative to carbon black, for Polyethylene tanks, which avoids the hysteresis of solvent and allows a more friendly recycling process, was studied. Sorption-desorption isotherms where obtained using a model molecule (n-heptane), in order to simulate the contact with the fuel. The material pigmented with the alternative black colorant was put in contact with liquid fuel for six months: after desorption the rheological behaviour was analyzed at 240°C. Films were obtained after contact with fuel, and submitted to dynamic mechanical analysis. The experimental data were compared with the ones obtained from the material utilized by FIAT Company (Italy) for fuel tanks (carbon black pigmented), both virgin and used ones.
- Published
- 2002
23. Atrial natriuretic peptide (ANP) modulates stress-induced autophagy in endothelial cells.
- Author
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Forte M, Marchitti S, di Nonno F, Pietrangelo D, Stanzione R, Cotugno M, D'Ambrosio L, D'Amico A, Cammisotto V, Sarto G, Rocco E, Simeone B, Schiavon S, Vecchio D, Carnevale R, Raffa S, Frati G, Volpe M, Sciarretta S, and Rubattu S
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- Humans, Receptors, Atrial Natriuretic Factor metabolism, Receptors, Atrial Natriuretic Factor genetics, Tumor Necrosis Factor-alpha pharmacology, Tumor Necrosis Factor-alpha metabolism, Stress, Physiological drug effects, Signal Transduction drug effects, Atrial Natriuretic Factor metabolism, Atrial Natriuretic Factor pharmacology, Autophagy drug effects, Human Umbilical Vein Endothelial Cells metabolism
- Abstract
Atrial natriuretic peptide (ANP), a cardiac hormone involved in the regulation of water/sodium balance and blood pressure, is also secreted by endothelial cells, where it exerts protective effects in response to stress. Autophagy is an intracellular self-renewal process involved in the degradation of dysfunctional cytoplasmic elements. ANP was recently reported to act as an extracellular regulator of cardiac autophagy. However, its role in the regulation of endothelial autophagy has never been investigated. Here, we tested the effects of ANP in the regulation of autophagy in human umbilical vein endothelial cells (HUVECs). We found that ANP rapidly increases autophagy and autophagic flux at physiological concentrations through its predominant pathway, mediated by natriuretic peptide receptor type A (NPR-A) and protein kinase G (PKG). We further observed that ANP is rapidly secreted by HUVEC under stress conditions, where it mediates stress-induced autophagy through autocrine and paracrine mechanisms. Finally, we found that the protective effects of ANP in response to high-salt loading or tumor necrosis factor (TNF)-α are blunted by concomitant inhibition of autophagy. Overall, our results suggest that ANP acts as an endogenous autophagy activator in endothelial cells. The autophagy mechanism mediates the protective endothelial effects exerted by ANP., Competing Interests: Declaration of competing interest None to disclose., (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)
- Published
- 2025
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24. Thiamin (vitamin B1, thiamine) transfer in the aquatic food web from lower to higher trophic levels.
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Hylander S, Farnelid H, Fridolfsson E, Hauber MM, Todisco V, Ejsmond MJ, and Lindehoff E
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- Animals, Zooplankton metabolism, Nitrogen metabolism, Thiamine metabolism, Thiamine analysis, Food Chain, Phytoplankton metabolism
- Abstract
Micronutrients such as vitamins are transferred from lower to higher trophic levels, but no general ecological concept describes the factors regulating this process. Here, we investigated thiamin (thiamine, vitamin B1), which is an example of a metabolically important water-soluble micronutrient. Thiamin is produced by organisms such as bacteria and phytoplankton, and all consumers, such as zooplankton and fish, rely on a continuous intake of thiamin through their diet and possibly from de novo-synthesized thiamin by gut microbiota. A deficiency in thiamin negatively affects reproduction in fish and bird populations worldwide. The aim of this study was to quantify thiamin transfer in a planktonic food web in response to thiamin and/or nutrient addition, using an outdoor mesocosm system (an approximately 1.9 m3 bag submerged in sea water). These estimates were then compared with literature data on thiamin concentrations at different trophic levels. The results showed that thiamin was rapidly taken up by phytoplankton in both the ambient and nutrient-amended treatments. However, large differences in thiamin concentrations in phytoplankton did not lead to any significant changes in community composition or abundance. Nitrogen addition led to changes in the abundance and community composition of picoplankton and phytoplankton but there were no additional major effects of thiamin addition. Differences in thiamin concentrations in phytoplankton were not detected at the next trophic level in zooplankton. Although the concentrations did not change, a greater abundance of some zooplankton taxa were developed in the thiamin treatments. Comparing the mesocosm results with literature data demonstrated a gradual reduction in thiamin concentrations along the food chain, with six percent of the concentration in producers occurring in top consumers (i.e., piscivorous fish). Overall, these observations illustrate the concept of trophic dilution of micronutrients where concentrations decrease along the food web from phytoplankton via zooplankton and planktivorous fish to piscivorous fish., Competing Interests: No competing interests., (Copyright: © 2024 Hylander et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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25. The hidden role of buffalo trade network in bovine epidemic spreading.
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Zoppi G, Candeloro L, Savini L, Colizza V, and Giacobini M
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- Animals, Cattle, Italy epidemiology, Epidemics, Cattle Diseases epidemiology, Cattle Diseases transmission, Cattle Diseases virology, Farms, Commerce, Buffaloes
- Abstract
Animal movements are a key factor in the spread of pathogens. Consequently, network analysis of animal movements is a well-developed and well-studied field. The relationships between animals facilitate the diffusion of infectious agents and, in particular, shared environments and close interactions can facilitate cross-species transmission. Cattle are often the focus of these studies since they are among the most widely distributed and traded species globally. This remains true for Italy as well, but with an important additional consideration. Indeed, another important productive reality in the peninsula is buffalo farming. These farms have an interesting characteristic: approximately two-thirds of them also rear cattle. This coexistence between cattle and buffalo could have an impact on the diffusion of pathogens. Given that buffalo farms are often overlooked in the literature, the primary goal of this work is to investigate the potential consequences of omitting buffalo from cattle network analyses. To investigate this impact, we will focus on Q fever, a disease that can infect both species and is present on the Italian territory and for which the impact of the buffalo population has not been thoroughly studied, and simulate its spread to the farms of both species through compartmental models. Our analysis reveals that despite the significant difference in network sizes, the unique characteristic of Italian buffalo farms makes the buffalo network essential for a comprehensive understanding of bovine disease dynamics in Italy., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Zoppi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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26. ERK5 mediates pro-tumorigenic phenotype in non-small lung cancer cells induced by PGE2.
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Filippelli A, Ciccone V, Del Gaudio C, Simonis V, Frosini M, Tusa I, Menconi A, Rovida E, and Donnini S
- Subjects
- Humans, A549 Cells, Cell Line, Tumor, Carcinogenesis genetics, Carcinogenesis metabolism, Phenotype, Dinoprostone metabolism, Dinoprostone pharmacology, Carcinoma, Non-Small-Cell Lung pathology, Carcinoma, Non-Small-Cell Lung metabolism, Carcinoma, Non-Small-Cell Lung genetics, Mitogen-Activated Protein Kinase 7 metabolism, Mitogen-Activated Protein Kinase 7 genetics, Lung Neoplasms pathology, Lung Neoplasms metabolism, Lung Neoplasms genetics, Cell Proliferation, Cell Movement drug effects
- Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide, with non-small cell lung cancer (NSCLC) constituting approximately 84 % of all lung cancer cases. The role of inflammation in the initiation and progression of NSCLC tumors has been the focus of extensive research. Among the various inflammatory mediators, prostaglandin E2 (PGE2) plays a pivotal role in promoting the aggressiveness of epithelial tumors through multiple mechanisms, including the stimulation of growth, evasion of apoptosis, invasion, and induction of angiogenesis. The Extracellular signal-Regulated Kinase 5 (ERK5), the last discovered member among conventional mitogen-activated protein kinases (MAPK), is implicated in cancer-associated inflammation. In this study, we explored whether ERK5 is involved in the process of tumorigenesis induced by PGE2. Using A549 and PC9 NSCLC cell lines, we found that PGE2 triggers the activation of ERK5 via the EP1 receptor. Moreover, both genetic and pharmacological inhibition of ERK5 reduced PGE2-induced proliferation, migration, invasion and stemness of A549 and PC9 cells, indicating that ERK5 plays a critical role in PGE2-induced tumorigenesis. In summary, our study underscores the pivotal role of the PGE2/EP1/ERK5 axis in driving the malignancy of NSCLC cells in vitro. Targeting this axis holds promise as a potential avenue for developing novel therapeutic strategies aimed at controlling the advancement of NSCLC., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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27. Phenolic Dienes as Highly Selective Dienophiles in the Asymmetric Organocatalyzed Three-Component Vinylogous Povarov Reaction.
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Brion A, Martini V, Lombard M, Retailleau P, Della Ca' N, Neuville L, and Masson G
- Abstract
Our study presents a novel enantioselective route for the synthesis of 1,2,3,4-tetrahydroquinolines via a chiral phosphoric acid-catalyzed three-component Povarov reaction, employing phenolic dienes as dienophiles. This approach produces a diverse array of 2,3,4-trisubstituted tetrahydroquinolines, each featuring a styryl group at position 4, in high yields with excellent regio-, diastereo-, and enantioselectivities (>95:5 dr and up to >99% ee).
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- 2024
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28. An automatic radiomic-based approach for disease localization: A pilot study on COVID-19.
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Varriano G, Nardone V, Correra S, Mercaldo F, and Santone A
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- Humans, Pilot Projects, Tomography, X-Ray Computed methods, Algorithms, Radiomics, COVID-19 diagnostic imaging, SARS-CoV-2
- Abstract
Radiomics is an innovative field in Personalized Medicine to help medical specialists in diagnosis and prognosis. Mainly, the application of Radiomics to medical images requires the definition and delimitation of the Region Of Interest (ROI) on the medical image to extract radiomic features. The aim of this preliminary study is to define an approach that automatically detects the specific areas indicative of a particular disease and examines them to minimize diagnostic errors associated with false positives and false negatives. This approach aims to create a nxn grid on the DICOM image sequence and each cell in the matrix is associated with a region from which radiomic features can be extracted. The proposed procedure uses the Model Checking technique and produces as output the medical diagnosis of the patient, i.e., whether the patient under analysis is affected or not by a specific disease. Furthermore, the matrix-based method also localizes where appears the disease marks. To evaluate the performance of the proposed methodology, a case study on COVID-19 disease is used. Both results on disease identification and localization seem very promising. Furthermore, this proposed approach yields better results compared to methods based on the extraction of features using the whole image as a single ROI, as evidenced by improvements in Accuracy and especially Recall. Our approach supports the advancement of knowledge, interoperability and trust in the software tool, fostering collaboration among doctors, staff and Radiomics., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Antonella Santone reports financial support was provided by Ministry of Education and Merit and by Ministry of University and Research. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
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- 2024
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29. A proposed methodology to evaluate the influence of climate change on drinking water treatments and costs.
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Verlicchi P, Grillini V, Maffini F, Benini A, Mari M, and Casoni R
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- Groundwater, Italy, Water Supply, Climate Change, Water Purification economics, Drinking Water
- Abstract
Drinking water (DW) production treatments can be affected by climate change, in particular intense rainfall events, having an impact on the availability and quality of the water source. The current study proposes a methodology for the evaluation of the costs of the different treatment steps for surface water (SW) and groundwater (GW), through the analysis and quantification of the main cost items. It provides the details to count for strong variations in the key quality parameters of inlet water following severe rainfalls (namely turbidity, iron, manganese, and E. coli). This methodology is then applied to a large drinking water treatment plant (DWTP) in Italy, which treats both SW, around 70 %, and GW, around 30%. It discusses the overall DW production costs (from 7.60 c€/m
3 to 10.43 c€/m3 ) during the period 2019-2021 and analyzes the contributions of the different treatment steps in water and sludge trains. Then it focuses on the effects on the treatments of significant variations in SW turbidity (up to 1863 NTU) due to intense rainfalls, and on the daily costs of DW with respect to the average (baseline) costs evaluated on the annual basis. It emerges that, when SW has low turbidity levels, the energy-based steps have the biggest contribution on the costs (final pumping 22 % for SW and 10 % for GW, withdrawal 15 % and 14 %, respectively), whereas at very high turbidity levels, sludge greatly increases, and its treatment and disposal costs become significant (up to 14 % and 50 %). Efforts are being made to adopt the best strategies for the management of DWTPs in these adverse conditions, with the aim to guarantee potable water and optimize water production costs. A mitigation measure consists of increasing GW withdrawal up to the authorized flow rate, thus reducing SW withdrawal. In this context, the study is completed by discussing the potential upgrading of the DWTP by only treating GW withdrawn from riverbank filtration. The DW production cost would be 7.76 c€/m3 , which is lower than that seen for the same year (2021) with the current plant configuration (8.32 c€/m3 )., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2024
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30. Miniaturized matrix solid-phase dispersion assisted by deep eutectic solvent for acrylamide determination in bread samples.
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Della Posta S, Ascrizzi AM, Pietrangeli G, Terrigno V, De Arcangelis E, Ruggeri S, and Fanali C
- Abstract
Acrylamide determination is important to state its quantity in baked food preventing any potential carcinogenic effects. Matrix solid-phase dispersion (MSPD) extraction is an extraction procedure based on a homogenization phase between a solid sample and a solid dispersing material to break sample increasing analyte extraction yield, often used for acrylamide determination. The addition of a green deep eutectic solvent (DES) during the MSPD homogenization phase improves the analyte extraction, giving the possibility to reduce the amount of organic solvent used. In this work, a miniaturized MSPD extraction assisted by a DES was developed to determine acrylamide in bread, using high-performance liquid chromatography coupled with mass spectrometry detection. The optimized procedure provides 1:1 (w/w) matrix-to-dispersing material ratio, 2 mL of methanol as extraction solvent, and 50 μL of choline chloride-glycerol DES added during the homogenization phase. Method validation ensured good results with minimum recoveries of 90%, high precision with a maximum intra-day error of 4%, and inter-day error of 6%. Limit of detection and limit of quantification resulted to be 16 μg/kg and 35 μg/kg, respectively. This miniaturized extraction procedure represents a good alternative to those reported in the literature, guaranteeing great performance and respecting green chemistry principles., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.)
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- 2024
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31. The redox-active defensive Selenoprotein T as a novel stress sensor protein playing a key role in the pathophysiology of heart failure.
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De Bartolo A, Pasqua T, Romeo N, Rago V, Perrotta I, Giordano F, Granieri MC, Marrone A, Mazza R, Cerra MC, Lefranc B, Leprince J, Anouar Y, Angelone T, and Rocca C
- Subjects
- Adult, Aged, Animals, Humans, Rats, Hypertrophy metabolism, Isoproterenol metabolism, Isoproterenol pharmacology, Myocytes, Cardiac metabolism, Oxidation-Reduction, Heart Failure metabolism, Selenoproteins metabolism, Thioredoxin-Disulfide Reductase metabolism
- Abstract
Maladaptive cardiac hypertrophy contributes to the development of heart failure (HF). The oxidoreductase Selenoprotein T (SELENOT) emerged as a key regulator during rat cardiogenesis and acute cardiac protection. However, its action in chronic settings of cardiac dysfunction is not understood. Here, we investigated the role of SELENOT in the pathophysiology of HF: (i) by designing a small peptide (PSELT), recapitulating SELENOT activity via the redox site, and assessed its beneficial action in a preclinical model of HF [aged spontaneously hypertensive heart failure (SHHF) rats] and against isoproterenol (ISO)-induced hypertrophy in rat ventricular H9c2 and adult human AC16 cardiomyocytes; (ii) by evaluating the SELENOT intra-cardiomyocyte production and secretion under hypertrophied stimulation. Results showed that PSELT attenuated systemic inflammation, lipopolysaccharide (LPS)-induced macrophage M1 polarization, myocardial injury, and the severe ultrastructural alterations, while counteracting key mediators of cardiac fibrosis, aging, and DNA damage and restoring desmin downregulation and SELENOT upregulation in the failing hearts. In the hemodynamic assessment, PSELT improved the contractile impairment at baseline and following ischemia/reperfusion injury, and reduced infarct size in normal and failing hearts. At cellular level, PSELT counteracted ISO-mediated hypertrophy and ultrastructural alterations through its redox motif, while mitigating ISO-triggered SELENOT intracellular production and secretion, a phenomenon that presumably reflects the extent of cell damage. Altogether, these results indicate that SELENOT could represent a novel sensor of hypertrophied cardiomyocytes and a potential PSELT-based new therapeutic approach in myocardial hypertrophy and HF., (© 2024. The Author(s).)
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- 2024
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32. Impact of heat-not-burn cigarette passive smoking on children's oxidative stress, endothelial and platelet function.
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Loffredo L, Carnevale R, Pannunzio A, Cinicola BL, Palumbo IM, Bartimoccia S, Nocella C, Cammisotto V, Violi F, Biondi-Zoccai G, Frati G, and Zicari AM
- Subjects
- Child, Humans, Hydrogen Peroxide, Hot Temperature, Oxidative Stress physiology, Isoprostanes, Tobacco Smoke Pollution adverse effects, Tobacco Products, Thrombosis
- Abstract
Growing global use of heat-not-burn cigarettes (HNBC) prompts investigation. Prior studies assessed HNBC's effects on cardiovascular health, revealing heightened oxidative stress, platelet activation, and endothelial dysfunction. However, limited understanding exists regarding passive smoking's impact on children exposed to HNBC. This study aims to assess levels of oxidative stress, endothelial and platelet function among children exposed to passive smoke from HNBC, traditional tobacco (TT) cigarettes and unexposed subjects. Seventy-eight children (2-18 years) were divided into three groups: HNBC passive smokers (n = 26), TT cigarette exposed (n = 26), and control (CNT) group (n = 26, unexposed). Oxidative stress was evaluated by serum NADPH oxidase-2 (NOX2) activity, assessed by soluble Nox2-derived peptide (sNOX2-dp), isoprostanes, hydrogen peroxide (H
2 O2 ) production, hydrogen break-down activity (HBA) and NO bioavailability. Endothelial function was assessed by brachial flow-mediated dilation (FMD). Platelet function was evaluated by soluble CD40 ligand (sCD40L), soluble P-selectin (sP-selectin) and thrombus formation by T-TAS analysis. Passive smoking-exposed children (both HNBC and TT) exhibited significantly increased serum sNOX2-dp, isoprostanes, H2O2, sCD40L sP-selectin and thrombus formation versus controls. Conversely, exposed children displayed reduced brachial FMD and serum NO bioavailability. No significant differences were found between children exposed to passive smoking of HNBC vs TT. Multivariable regression linked sNOX2 (standardized coefficient β: 0.284; SE: 0.040; p = 0.01) and H2 O2 (standardized coefficient β: 0.243; SE: 0.0; p = 0.02) as independent predictors of FMD, and isoprostanes (standardized coefficient β:0.388; SE: 0.022; p < 0.001) and serum cotinine (standardized coefficient β:0.270; SE: 0.048; p = 0.01) with sNOX2-dp levels. Exposure to HNBC smoke heightened oxidative stress, endothelial dysfunction, platelet activation, and thrombus formation in children. Findings suggest avenues for interventions to curb childhood passive smoking exposure., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Lorenzo Loffredo reports financial support was provided by University of Rome La Sapienza. Lorenzo Loffredo reports a relationship with University of Rome La Sapienza that includes: employment. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)- Published
- 2024
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33. Effects of petrogenic pollutants on North Atlantic and Arctic Calanus copepods: From molecular mechanisms to population impacts.
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Hansen BH, Tarrant AM, Lenz PH, Roncalli V, Almeda R, Broch OJ, Altin D, and Tollefsen KE
- Subjects
- Animals, Food Chain, Water pharmacology, Arctic Regions, Copepoda, Water Pollutants, Chemical toxicity, Petroleum toxicity, Petroleum metabolism
- Abstract
Oil and gas industries in the Northern Atlantic Ocean have gradually moved closer to the Arctic areas, a process expected to be further facilitated by sea ice withdrawal caused by global warming. Copepods of the genus Calanus hold a key position in these cold-water food webs, providing an important energetic link between primary production and higher trophic levels. Due to their ecological importance, there is a concern about how accidental oil spills and produced water discharges may impact cold-water copepods. In this review, we summarize the current knowledge of the toxicity of petroleum on North Atlantic and Arctic Calanus copepods. We also review how recent development of high-quality transcriptomes from RNA-sequencing of copepods have identified genes regulating key biological processes, like molting, diapause and reproduction in Calanus copepods, to suggest linkages between exposure, molecular mechanisms and effects on higher levels of biological organization. We found that the available ecotoxicity threshold data for these copepods provide valuable information about their sensitivity to acute petrogenic exposures; however, there is still insufficient knowledge regarding underlying mechanisms of toxicity and the potential for long-term implications of relevance for copepod ecology and phenology. Copepod transcriptomics has expanded our understanding of how key biological processes are regulated in cold-water copepods. These advances can improve our understanding of how pollutants affect biological processes, and thus provide the basis for new knowledge frameworks spanning the effect continuum from molecular initiating events to adverse effects of regulatory relevance. Such efforts, guided by concepts such as adverse outcome pathways (AOPs), enable standardized and transparent characterization and evaluation of knowledge and identifies research gaps and priorities. This review suggests enhancing mechanistic understanding of exposure-effect relationships to better understand and link biomarker responses to adverse effects to improve risk assessments assessing ecological effects of pollutant mixtures, like crude oil, in Arctic areas., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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34. Long-term and real-world safety and efficacy of retroviral gene therapy for adenosine deaminase deficiency.
- Author
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Migliavacca M, Barzaghi F, Fossati C, Rancoita PMV, Gabaldo M, Dionisio F, Giannelli S, Salerio FA, Ferrua F, Tucci F, Calbi V, Gallo V, Recupero S, Consiglieri G, Pajno R, Sambuco M, Priolo A, Ferri C, Garella V, Monti I, Silvani P, Darin S, Casiraghi M, Corti A, Zancan S, Levi M, Cesana D, Carlucci F, Pituch-Noworolska A, AbdElaziz D, Baumann U, Finocchi A, Cancrini C, Ladogana S, Meinhardt A, Meyts I, Montin D, Notarangelo LD, Porta F, Pasquet M, Speckmann C, Stepensky P, Tommasini A, Rabusin M, Karakas Z, Galicchio M, Leonardi L, Duse M, Guner SN, Di Serio C, Ciceri F, Bernardo ME, Aiuti A, and Cicalese MP
- Subjects
- Humans, Adenosine Deaminase genetics, Adenosine Deaminase therapeutic use, Busulfan adverse effects, Genetic Therapy, Retroviridae genetics, Severe Combined Immunodeficiency genetics, Severe Combined Immunodeficiency therapy, Hematopoietic Stem Cell Transplantation, Agammaglobulinemia
- Abstract
Adenosine deaminase (ADA) deficiency leads to severe combined immunodeficiency (SCID). Previous clinical trials showed that autologous CD34
+ cell gene therapy (GT) following busulfan reduced-intensity conditioning is a promising therapeutic approach for ADA-SCID, but long-term data are warranted. Here we report an analysis on long-term safety and efficacy data of 43 patients with ADA-SCID who received retroviral ex vivo bone marrow-derived hematopoietic stem cell GT. Twenty-two individuals (median follow-up 15.4 years) were treated in the context of clinical development or named patient program. Nineteen patients were treated post-marketing authorization (median follow-up 3.2 years), and two additional patients received mobilized peripheral blood CD34+ cell GT. At data cutoff, all 43 patients were alive, with a median follow-up of 5.0 years (interquartile range 2.4-15.4) and 2 years intervention-free survival (no need for long-term enzyme replacement therapy or allogeneic hematopoietic stem cell transplantation) of 88% (95% confidence interval 78.7-98.4%). Most adverse events/reactions were related to disease background, busulfan conditioning or immune reconstitution; the safety profile of the real world experience was in line with premarketing cohort. One patient from the named patient program developed a T cell leukemia related to treatment 4.7 years after GT and is currently in remission. Long-term persistence of multilineage gene-corrected cells, metabolic detoxification, immune reconstitution and decreased infection rates were observed. Estimated mixed-effects models showed that higher dose of CD34+ cells infused and younger age at GT affected positively the plateau of CD3+ transduced cells, lymphocytes and CD4+ CD45RA+ naive T cells, whereas the cell dose positively influenced the final plateau of CD15+ transduced cells. These long-term data suggest that the risk-benefit of GT in ADA remains favorable and warrant for continuing long-term safety monitoring. Clinical trial registration: NCT00598481 , NCT03478670 ., (© 2024. The Author(s), under exclusive licence to Springer Nature America, Inc.)- Published
- 2024
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35. Burden of delayed discharge on acute hospital medical wards: A retrospective ecological study in Rome, Italy.
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Vinci A, Furia G, Cammalleri V, Colamesta V, Chierchini P, Corrado O, Mammarella A, Ingravalle F, Bardhi D, Malerba RM, Carnevale E, Gentili S, Damiani G, De Vito C, and Maurici M
- Subjects
- Humans, Italy, Retrospective Studies, Rome, Hospitals, Patient Discharge
- Abstract
Introduction: Delayed discharge represents the difficulty in proceeding with discharge of patients who do not have any further benefit from prolonged stay. A quota of this problem is related to organizational issues. In the Lazio region in Italy, a macro service re-organization in on the way, with a network of hospital and territorial centers engaged in structuring in- and out- of hospital patient pathways, with a special focus on intermediate care structures. Purpose of this study is to quantify the burden of delayed discharge on a single hospital structure, in order to estimate costs and occurrence of potential resource misplacement., Material and Methods: Observational Retrospective study conducted at the Santo Spirito Hospital in Rome, Italy. Observation period ranged from 1/09/2022, when the local database was instituted, to 1/03/2023 (6 months). Data from admissions records was anonymously collected. Data linkage with administrative local hospital database was performed in order to identify the date a discharge request was fired for each admission. Surgical discharges and Intensive Care Unit (ICU) discharges were excluded from this study. A Poisson hierarchical regression model was employed to investigate for the role of ward, Severity of Disease (SoD) and Risk of Mortality (RoM) on elongation of discharge time., Results: 1222 medical ward admissions were recorded in the timeframe. 16% of them were considered as subject to potentially elongated stay, and a mean Delay in discharge of 6.3 days (SD 7.9) was observed., Discussion and Conclusions: Delayed discharge may cause a "bottleneck" in admissions and result in overcrowded Emergency Department, overall poor performance, and increase in overall costs. A consisted proportion of available beds can get inappropriately occupied, and this inflates both direct and indirect costs. Clinical conditions on admission are not a good predictor of delay in discharge, and the root causes of this phenomenon likely lie in organizational issues (on structure\system level) and social issues (on patient's level)., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Vinci et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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36. Consistent patterns of common species across tropical tree communities.
- Author
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Cooper DLM, Lewis SL, Sullivan MJP, Prado PI, Ter Steege H, Barbier N, Slik F, Sonké B, Ewango CEN, Adu-Bredu S, Affum-Baffoe K, de Aguiar DPP, Ahuite Reategui MA, Aiba SI, Albuquerque BW, de Almeida Matos FD, Alonso A, Amani CA, do Amaral DD, do Amaral IL, Andrade A, de Andrade Miranda IP, Angoboy IB, Araujo-Murakami A, Arboleda NC, Arroyo L, Ashton P, Aymard C GA, Baider C, Baker TR, Balinga MPB, Balslev H, Banin LF, Bánki OS, Baraloto C, Barbosa EM, Barbosa FR, Barlow J, Bastin JF, Beeckman H, Begne S, Bengone NN, Berenguer E, Berry N, Bitariho R, Boeckx P, Bogaert J, Bonyoma B, Boundja P, Bourland N, Boyemba Bosela F, Brambach F, Brienen R, Burslem DFRP, Camargo JL, Campelo W, Cano A, Cárdenas S, Cárdenas López D, de Sá Carpanedo R, Carrero Márquez YA, Carvalho FA, Casas LF, Castellanos H, Castilho CV, Cerón C, Chapman CA, Chave J, Chhang P, Chutipong W, Chuyong GB, Cintra BBL, Clark CJ, Coelho de Souza F, Comiskey JA, Coomes DA, Cornejo Valverde F, Correa DF, Costa FRC, Costa JBP, Couteron P, Culmsee H, Cuni-Sanchez A, Dallmeier F, Damasco G, Dauby G, Dávila N, Dávila Doza HP, De Alban JDT, de Assis RL, De Canniere C, De Haulleville T, de Jesus Veiga Carim M, Demarchi LO, Dexter KG, Di Fiore A, Din HHM, Disney MI, Djiofack BY, Djuikouo MK, Do TV, Doucet JL, Draper FC, Droissart V, Duivenvoorden JF, Engel J, Estienne V, Farfan-Rios W, Fauset S, Feeley KJ, Feitosa YO, Feldpausch TR, Ferreira C, Ferreira J, Ferreira LV, Fletcher CD, Flores BM, Fofanah A, Foli EG, Fonty É, Fredriksson GM, Fuentes A, Galbraith D, Gallardo Gonzales GP, Garcia-Cabrera K, García-Villacorta R, Gomes VHF, Gómez RZ, Gonzales T, Gribel R, Guedes MC, Guevara JE, Hakeem KR, Hall JS, Hamer KC, Hamilton AC, Harris DJ, Harrison RD, Hart TB, Hector A, Henkel TW, Herbohn J, Hockemba MBN, Hoffman B, Holmgren M, Honorio Coronado EN, Huamantupa-Chuquimaco I, Hubau W, Imai N, Irume MV, Jansen PA, Jeffery KJ, Jimenez EM, Jucker T, Junqueira AB, Kalamandeen M, Kamdem NG, Kartawinata K, Kasongo Yakusu E, Katembo JM, Kearsley E, Kenfack D, Kessler M, Khaing TT, Killeen TJ, Kitayama K, Klitgaard B, Labrière N, Laumonier Y, Laurance SGW, Laurance WF, Laurent F, Le TC, Le TT, Leal ME, Leão de Moraes Novo EM, Levesley A, Libalah MB, Licona JC, Lima Filho DA, Lindsell JA, Lopes A, Lopes MA, Lovett JC, Lowe R, Lozada JR, Lu X, Luambua NK, Luize BG, Maas P, Magalhães JLL, Magnusson WE, Mahayani NPD, Makana JR, Malhi Y, Maniguaje Rincón L, Mansor A, Manzatto AG, Marimon BS, Marimon-Junior BH, Marshall AR, Martins MP, Mbayu FM, de Medeiros MB, Mesones I, Metali F, Mihindou V, Millet J, Milliken W, Mogollón HF, Molino JF, Mohd Said MN, Monteagudo Mendoza A, Montero JC, Moore S, Mostacedo B, Mozombite Pinto LF, Mukul SA, Munishi PKT, Nagamasu H, Nascimento HEM, Nascimento MT, Neill D, Nilus R, Noronha JC, Nsenga L, Núñez Vargas P, Ojo L, Oliveira AA, de Oliveira EA, Ondo FE, Palacios Cuenca W, Pansini S, Pansonato MP, Paredes MR, Paudel E, Pauletto D, Pearson RG, Pena JLM, Pennington RT, Peres CA, Permana A, Petronelli P, Peñuela Mora MC, Phillips JF, Phillips OL, Pickavance G, Piedade MTF, Pitman NCA, Ploton P, Popelier A, Poulsen JR, Prieto A, Primack RB, Priyadi H, Qie L, Quaresma AC, de Queiroz HL, Ramirez-Angulo H, Ramos JF, Reis NFC, Reitsma J, Revilla JDC, Riutta T, Rivas-Torres G, Robiansyah I, Rocha M, Rodrigues DJ, Rodriguez-Ronderos ME, Rovero F, Rozak AH, Rudas A, Rutishauser E, Sabatier D, Sagang LB, Sampaio AF, Samsoedin I, Satdichanh M, Schietti J, Schöngart J, Scudeller VV, Seuaturien N, Sheil D, Sierra R, Silman MR, Silva TSF, da Silva Guimarães JR, Simo-Droissart M, Simon MF, Sist P, Sousa TR, de Sousa Farias E, de Souza Coelho L, Spracklen DV, Stas SM, Steinmetz R, Stevenson PR, Stropp J, Sukri RS, Sunderland TCH, Suzuki E, Swaine MD, Tang J, Taplin J, Taylor DM, Tello JS, Terborgh J, Texier N, Theilade I, Thomas DW, Thomas R, Thomas SC, Tirado M, Toirambe B, de Toledo JJ, Tomlinson KW, Torres-Lezama A, Tran HD, Tshibamba Mukendi J, Tumaneng RD, Umaña MN, Umunay PM, Urrego Giraldo LE, Valderrama Sandoval EH, Valenzuela Gamarra L, Van Andel TR, van de Bult M, van de Pol J, van der Heijden G, Vasquez R, Vela CIA, Venticinque EM, Verbeeck H, Veridiano RKA, Vicentini A, Vieira ICG, Vilanova Torre E, Villarroel D, Villa Zegarra BE, Vleminckx J, von Hildebrand P, Vos VA, Vriesendorp C, Webb EL, White LJT, Wich S, Wittmann F, Zagt R, Zang R, Zartman CE, Zemagho L, Zent EL, and Zent S
- Subjects
- Biodiversity, Africa, Asia, Southeastern, Forests, Trees anatomy & histology, Trees classification, Trees growth & development, Tropical Climate
- Abstract
Trees structure the Earth's most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations
1-6 in closed-canopy, structurally intact old-growth tropical forests in Africa, Amazonia and Southeast Asia. We estimate that 2.2%, 2.2% and 2.3% of species comprise 50% of the tropical trees in these regions, respectively. Extrapolating across all closed-canopy tropical forests, we estimate that just 1,053 species comprise half of Earth's 800 billion tropical trees with trunk diameters of at least 10 cm. Despite differing biogeographic, climatic and anthropogenic histories7 , we find notably consistent patterns of common species and species abundance distributions across the continents. This suggests that fundamental mechanisms of tree community assembly may apply to all tropical forests. Resampling analyses show that the most common species are likely to belong to a manageable list of known species, enabling targeted efforts to understand their ecology. Although they do not detract from the importance of rare species, our results open new opportunities to understand the world's most diverse forests, including modelling their response to environmental change, by focusing on the common species that constitute the majority of their trees., (© 2024. The Author(s).)- Published
- 2024
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37. Transcriptomic analysis reveals responses to a polluted sediment in the Mediterranean copepod Acartia clausi.
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Rotolo F, Roncalli V, Cieslak M, Gallo A, Buttino I, and Carotenuto Y
- Subjects
- Animals, Female, Transcriptome, Geologic Sediments chemistry, Copepoda genetics, Water Pollutants, Chemical analysis, Polycyclic Aromatic Hydrocarbons toxicity, Polycyclic Aromatic Hydrocarbons analysis, Metals, Heavy analysis
- Abstract
Marine sediments are regarded as sinks for several classes of contaminants. Characterization and effects of sediments on marine biota now require a multidisciplinary approach, which includes chemical and ecotoxicological analyses and molecular biomarkers. Here, a gene expression study was performed to measure the response of adult females of the Mediterranean copepod Acartia clausi to elutriates of polluted sediments (containing high concentrations of polycyclic aromatic hydrocarbons, PAHs, and heavy metals) from an industrial area in the Southern Tyrrhenian Sea (Bagnoli-Coroglio). Functional annotation of the A. clausi transcriptome generated as reference here, showed a good quality of the assembly and great homology with other copepod and crustacean sequences in public databases. This is one of the few available transcriptomic resources for this widespread copepod species of great ecological relevance in temperate coastal areas. Differential expression analysis between females exposed to the elutriate and those in control seawater identified 1000 differentially expressed genes, of which 743 up- and 257 down-regulated. Within the up-regulated genes, the most represented functions were related to proteolysis (lysosomal protease, peptidase, cathepsin), response to stress and detoxification (heat-shock protein, superoxide dismutase, glutathione-S-transferase, cytochrome P450), and cytoskeleton structure (α- and β-tubulin). Down-regulated genes were mostly involved with ribosome structure (ribosomal proteins) and DNA binding (histone proteins, transcription factors). Overall, these results suggest that processes such as transcription, translation, protein degradation, metabolism of biomolecules, reproduction, and xenobiotic detoxification were altered in the copepod in response to polluted elutriates. In conclusion, our results contribute to gaining information on the transcriptomic responses of copepods to polluted sediments. They will also prompt the selection of genes of interest to be used as biomarkers of exposure to PAHs and heavy metals in molecular toxicology studies on copepods, and in general, in comparative functional genomic studies on marine zooplankton., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Published
- 2023
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38. ACLY as a modulator of liver cell functions and its role in Metabolic Dysfunction-Associated Steatohepatitis.
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Convertini P, Santarsiero A, Todisco S, Gilio M, Palazzo D, Pappalardo I, Iacobazzi D, Frontuto M, and Infantino V
- Subjects
- Humans, Tumor Necrosis Factor-alpha, Interleukin-6, Leukocytes, Mononuclear, Hepatocytes, ATP Citrate (pro-S)-Lyase genetics, Non-alcoholic Fatty Liver Disease
- Abstract
Background: Non-alcoholic Fatty Liver Disease (NAFLD), now better known as Metabolic (Dysfunction)-Associated Fatty Liver Disease (MAFLD) and its progression to Nonalcoholic Steatohepatitis (NASH), more recently referred to as Metabolic (Dysfunction)-Associated Steatohepatitis (MASH) are the most common causes of liver failure and chronic liver damage. The new names emphasize the metabolic involvement both in relation to liver function and pathological features with extrahepatic manifestations. This study aims to explore the role of the immunometabolic enzyme ATP citrate lyase (ACLY), with a critical function in lipogenesis, carbohydrate metabolism, gene expression and inflammation., Methods: ACLY function was investigated in TNFα-triggered human hepatocytes and in PBMC-derived macrophages from MASH patients. Evaluation of expression levels was carried out by western blotting and/or RT-qPCR. In the presence or absence of ACLY inhibitors, ROS, lipid peroxidation and GSSG oxidative stress biomarkers were quantified. Chromatin immunoprecipitation (ChIP), transient transfections, immunocytochemistry, histone acetylation quantitation were used to investigate ACLY function in gene expression reprogramming. IL-6 and IL-1β were quantified by Lumit immunoassays., Results: Mechanistically, ACLY inhibition reverted lipid accumulation and oxidative damage while reduced secretion of inflammatory cytokines in TNFα-triggered human hepatocytes. These effects impacted not only on lipid metabolism but also on other crucial features of liver function such as redox status and production of inflammatory mediators. Moreover, ACLY mRNA levels together with those of malic enzyme 1 (ME1) increased in human PBMC-derived macrophages from MASH patients when compared to age-matched healthy controls. Remarkably, a combination of hydroxycitrate (HCA), the natural ACLY inhibitor, with red wine powder (RWP) significantly lowered ACLY and ME1 mRNA amount as well as IL-6 and IL-1β production in macrophages from subjects with MASH., Conclusion: Collectively, our findings for the first time highlight a broad spectrum of ACLY functions in liver as well as in the pathogenesis of MASH and its diagnostic and therapeutic potential value., (© 2023. BioMed Central Ltd., part of Springer Nature.)
- Published
- 2023
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39. Prioritizing COVID-19 vaccine allocation in resource poor settings: Towards an Artificial Intelligence-enabled and Geospatial-assisted decision support framework.
- Author
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Shayegh S, Andreu-Perez J, Akoth C, Bosch-Capblanch X, Dasgupta S, Falchetta G, Gregson S, Hammad AT, Herringer M, Kapkea F, Labella A, Lisciotto L, Martínez L, Macharia PM, Morales-Ruiz P, Murage N, Offeddu V, South A, Torbica A, Trentini F, and Melegaro A
- Subjects
- Humans, Artificial Intelligence, Biological Transport, Data Analysis, Vaccination, COVID-19 Vaccines, COVID-19 epidemiology, COVID-19 prevention & control
- Abstract
Objectives: To propose a novel framework for COVID-19 vaccine allocation based on three components of Vulnerability, Vaccination, and Values (3Vs)., Methods: A combination of geospatial data analysis and artificial intelligence methods for evaluating vulnerability factors at the local level and allocate vaccines according to a dynamic mechanism for updating vulnerability and vaccine uptake., Results: A novel approach is introduced including (I) Vulnerability data collection (including country-specific data on demographic, socioeconomic, epidemiological, healthcare, and environmental factors), (II) Vaccination prioritization through estimation of a unique Vulnerability Index composed of a range of factors selected and weighed through an Artificial Intelligence (AI-enabled) expert elicitation survey and scientific literature screening, and (III) Values consideration by identification of the most effective GIS-assisted allocation of vaccines at the local level, considering context-specific constraints and objectives., Conclusions: We showcase the performance of the 3Vs strategy by comparing it to the actual vaccination rollout in Kenya. We show that under the current strategy, socially vulnerable individuals comprise only 45% of all vaccinated people in Kenya while if the 3Vs strategy was implemented, this group would be the first to receive vaccines., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Shayegh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2023
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40. Short-term effects of the strobilurin fungicide dimoxystrobin on zebrafish gills: A morpho-functional study.
- Author
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Ahmed AIM, Macirella R, Talarico F, Curcio V, Trotta G, Aiello D, Gharbi N, Mezzasalma M, and Brunelli E
- Subjects
- Animals, Strobilurins pharmacology, Zebrafish metabolism, Gills metabolism, Mammals, Fungicides, Industrial metabolism, Water Pollutants, Chemical analysis
- Abstract
Strobilurins represent the most widely used class of fungicides nowadays andare considered relatively non-toxic to mammals and birds but highly toxic to aquatic biota. Dimoxystrobin is one of the novel strobilurins, recently included in the 3rd Watch List of the European Commission as available data indicate that it could pose a significant risk to aquatic species. As yet, the number of studies explicitly assessing the impact of this fungicide on terrestrial and aquatic species is extremely low, and the toxic effects of dimoxystrobin on fish have not been reported. Here we investigate for the first time the alterations induced by two environmentally relevant and very low concentrations of dimoxystrobin (6.56 and 13.13 μg/L) in the fish gills. morphological, morphometric, ultrastructural, and functional alterations have been evaluated using zebrafish as a model species. We demonstrated that even short-term exposure (96 h) to dimoxystrobin alters fish gills reducing the surface available for gas exchange and inducing severe alterations encompassing three reaction patterns: circulatory disturbance and both regressive and progressive changes. Furthermore, we revealed that this fungicide impairs the expression of key enzymes involved in osmotic and acid-base regulation (Na
+ /K+ -ATPase and AQP3) and the defensive response against oxidative stress (SOD and CAT). The information presented here highlights the importance of combining data from different analytical methods for evaluating the toxic potential of currently used and new agrochemical compounds. Our results will also contribute to the discussion on the suitability of mandatory ecotoxicological tests on vertebrates before the introduction on the market of new compounds., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)- Published
- 2023
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41. Factors affecting food waste: A bibliometric review on the household behaviors.
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Pilone V, di Santo N, and Sisto R
- Subjects
- Humans, Food, Pandemics, Bibliometrics, Refuse Disposal, Waste Management, COVID-19 epidemiology
- Abstract
Sustainability issues such as food insecurity, climate change, land degradation, economic development and food waste are the actual most important challenges at the global level. Among them, the food waste (FW) challenge has a great magnitude, emphasizing the importance of examining this issue. Specifically, there is a need to focus on the household level. Thus, this study aims to investigate and identify the main factors influencing FW household behaviors on which policymakers and stakeholders could outline specific and sustainable strategies. Starting from a large number of published studies on this subject with a similar aim but focusing on specific Countries or contexts, the goal of our study is achieved through the implementation of a systematic literature review followed by a bibliometric review using the VOSviewer software. The selected query generated a total of 235 matching papers from which only 111 papers were collected for the bibliometric review because of the inclusion criteria. The analysis showed the existence of four major research strands: the largest one analyses the antecedents of behavior during food management, including the implementation of the Theory of Planned Behavior (TPB). Other detected topics are the economic impact of FW, the effects generated by the Covid-19 pandemic on consumer behaviors, and finally, the environmental and social effects of FW. The objective of this study is to investigate and identify the main factors influencing FW household behaviors. The obtained output represents useful information for policymakers and stakeholders to outline specific and sustainable strategies to reduce FW., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Pilone et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2023
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42. Determinants of influenza and pneumococcal vaccine uptake among preschool children in Singapore.
- Author
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Zahari M, Offeddu V, Smith GJD, and Tam CC
- Subjects
- Humans, Male, Child, Preschool, Infant, Child, Female, Pneumococcal Vaccines, Cohort Studies, Singapore epidemiology, Vaccines, Conjugate, Vaccination, Influenza Vaccines, Influenza, Human prevention & control, Pneumococcal Infections prevention & control
- Abstract
Young children are at increased risk of severe illness from influenza and pneumococcal infections. The World Health Organization (WHO) recommends vaccination with influenza and pneumococcal conjugate vaccine (PCV). However, in Singapore, vaccine uptake remains suboptimal relative to other routine childhood immunisations. Limited information exists regarding determinants of influenza and pneumococcal vaccine uptake in children. We estimated vaccine uptake and investigated factors associated with influenza and pneumococcal vaccination status by age group using data from a cohort study on acute respiratory infections in children attending preschools in Singapore. We recruited children aged two to six years at 24 participating preschools from June 2017 to July 2018. We determined the proportion of children immunised with influenza vaccine and PCV, and investigated socio-demographic factors associated with vaccine uptake using logistic regression models. Among 505 children, 77.5% were of Chinese ethnicity, and 53.1% were male. History of influenza vaccination was 27.5% of which 11.7% had been vaccinated within the past 12 months. In multivariable analyses, factors associated with influenza vaccine uptake were 'children living in landed property' (aOR = 2.25, 95% CI [1.07-4.67]) and 'history of hospitalisation due to cough' (aOR = 1.85, 95% CI [1.00-3.36]). Nearly three-quarters of participants (70.7% 95%CI: [66.6-74.5]) reported prior PCV vaccination. PCV uptake was higher for younger children. 'Higher parental education' (OR = 2.83, 95% CI [1.51,5.32]), 'household income' (OR = 1.26, 95% CI [1.08,1.48]) and 'smokers in household' (OR = 0.48, 95% CI [0.31,0.74]) were significantly associated with PCV uptake in univariable analyses. Only 'smokers in household' remained significantly associated with PCV uptake (aOR = 0.55, 95% CI [0.33,0.91]) in the adjusted model. Our results indicate that episodes of severe respiratory illness are a cue to influenza vaccination suggesting that doctors are more likely to recommend influenza vaccines to high-risk children. For PCV, our findings suggest overall greater awareness and education on the benefit of PCV vaccination is required., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Zahari et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2023
- Full Text
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43. Zingiberene, a non-zinc-binding class I HDAC inhibitor: A novel strategy for the management of neuropathic pain.
- Author
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Borgonetti V, Governa P, Manetti F, and Galeotti N
- Subjects
- Mice, Animals, Molecular Docking Simulation, Neuroinflammatory Diseases, Hyperalgesia drug therapy, Protein Isoforms therapeutic use, Histone Deacetylase Inhibitors pharmacology, Histone Deacetylase Inhibitors therapeutic use, Neuralgia drug therapy, Neuralgia metabolism
- Abstract
Background: Even though numerous Histone deacetylase inhibitors (HDACi) have been approved for the treatment of different types of cancer, and others are in clinical trials for the treatment of neurodegenerative diseases, the main problem related to the clinical use of available HDACi is their low isoform selectivity which causes undesirable effects and inevitably limits their therapeutic application. Previously, we demonstrated that a standardized Zingiber officinalis Roscoe rhizome extract (ZOE) reduced neuroinflammation through HDAC1 inhibition in a mice model of neuropathy, and this activity was related to terpenes fraction., Hypothesis/purpose: The aim of this work was to identify the ZOE constituent responsible for the activity on HDAC1 and to study its possible application in trauma-induced neuropathic pain., Methods: The ability of ZOE and its terpenes fraction (ZTE) to inhibit HDAC and SIRT isoforms activity and protein expression was assessed in vitro. Then, a structure-based virtual screening approach was applied to predict which constituent could be responsible for the activity. In the next step, the activity of selected compound was tested in an in vitro model of neuroinflammation and in an in vivo model of peripheral neuropathy (SNI)., Results: ZTE resulted to be more potent than ZOE on HDAC1, 2, and 6 isoforms, while ZOE was more active on HDAC8. Zingiberene (ZNG) was found to be the most promising HDAC1 inhibitor, with an IC
50 of 2.3 ± 0.1 µM. A non-zinc-binding mechanism of inhibition was proposed based on molecular docking. Moreover, the oral administration of ZNG reduced thermal hyperalgesia and mechanical allodynia in animals with neuropathy after 60 min from administration, and decreased HDAC-1 levels in the spinal cord microglia., Conclusion: We found a new non-zinc-dependent inhibitor of HDAC class I, with a therapeutic application in trauma-related neuropathic pain forms in which microglia-spinal overexpression of HDAC1 occurs. The non-zinc-binding mechanism has the potential to reduce off target effects, leading to a higher selectivity and better safety profile, compared to other HDAC inhibitors., Competing Interests: Declaration of Competing Interest None., (Copyright © 2023 Elsevier GmbH. All rights reserved.)- Published
- 2023
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44. Use of cenobamate for the treatment of focal epilepsy: an Italian expert opinion paper.
- Author
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Villani F, Cianci V, Di Bonaventura C, Di Gennaro G, Galimberti CA, Guerrini R, La Neve A, Mecarelli O, Pietrafusa N, Specchio N, Vigevano F, and Perucca E
- Subjects
- Adult, Humans, Seizures drug therapy, Treatment Outcome, Anticonvulsants, Epilepsies, Partial drug therapy
- Abstract
Introduction: Cenobamate is a new antiseizure medication (ASM) recently introduced in the USA for the treatment of adults with focal-onset seizures. In March 2021, the European Commission authorized its use for the adjunctive treatment of focal-onset seizures with or without secondary generalization (focal seizures with or without progression to bilateral tonic-clonic seizures, according to current ILAE terminology) in adults with epilepsy not adequately controlled despite the treatment with at least two ASMs., Areas Covered: This review summarizes the mechanism of action, efficacy, and safety of Cenobamate. The authors provide their expert opinions on the use of this drug., Expert Opinion: The aim of this paper is to report on the Italian preliminary experience with the use of cenobamate, focusing on treatment goals, optimal dosing and titration schedules, strategies to minimize adverse effects, and identification of suitable candidates for treatment. There was agreement that slow titration may improve tolerability, and that clinically significant benefit can be achieved in many patients at relatively low doses. A favorable response to relatively low doses of cenobamate could be an early predictor of ultimate responsiveness. Overall, cenobamate is a welcome new treatment for adults with focal seizures resistant to conventional ASMs.
- Published
- 2022
- Full Text
- View/download PDF
45. The role of exposure window and dose in determining lead toxicity in developing Zebrafish.
- Author
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Curcio V, Macirella R, Sesti S, Ahmed AIM, Talarico F, Pizzolotto R, Tagarelli A, Mezzasalma M, and Brunelli E
- Subjects
- Animals, Biomarkers, Hazardous Substances, Humans, Larva, Lead toxicity, Zebrafish, Metals, Heavy, Water Pollutants, Chemical toxicity
- Abstract
Heavy metal contamination is recognized worldwide as a serious threat to human health and wildlife, and reducing their emissions is a priority of international and EU actions. Due to its persistence, high bioaccumulation tendency, and toxicity properties, lead (Pb) is one of the heavy metals of greatest concern. Even at low concentrations, lead induces various clinical and subclinical conditions in both humans and animals, and it has been included in the priority list of hazardous substances. In the present study, we used zebrafish's early stages as a model, given their well-acknowledged predictive value in the risk assessment of chemicals. This study was designed to investigate the morphological and morphometric alterations induced by Pb during zebrafish's early development and disclose the putative effects stage- and/or dose-dependent. We examined injuries induced by two environmentally relevant and extremely low concentrations of Pb (2.5 μg/L and 5 μg/L) during two exposure windows: early (between 1 and 7 dpf) and late (between 2 and 8 dpf). We clearly demonstrated that the incidence and severity of morphological abnormalities increased with increasing Pb dose and exposure time in both early and late-exposed groups. Furthermore, we revealed that malformation severity was significantly higher in the early exposed group than in the late exposure group at all exposure times and for both tested doses, thus highlighting the high sensitivity of zebrafish during the initial stages of development. The information presented in this paper emphasizes the effectiveness of morphological biomarkers in unveiling threatening situations and supports the role of zebrafish embryos and larvae in risk assessment and environmental monitoring., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
46. High-resolution non-contrast free-breathing coronary cardiovascular magnetic resonance angiography for detection of coronary artery disease: validation against invasive coronary angiography.
- Author
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Nazir MS, Bustin A, Hajhosseiny R, Yazdani M, Ryan M, Vergani V, Neji R, Kunze KP, Nicol E, Masci PG, Perera D, Plein S, Chiribiri A, Botnar R, and Prieto C
- Subjects
- Coronary Angiography methods, Female, Humans, Magnetic Resonance Angiography, Magnetic Resonance Spectroscopy, Predictive Value of Tests, Prospective Studies, Sensitivity and Specificity, Coronary Artery Disease diagnostic imaging, Coronary Artery Disease pathology, Coronary Stenosis, Myocardial Perfusion Imaging methods
- Abstract
Background: Coronary artery disease (CAD) is the single most common cause of death worldwide. Recent technological developments with coronary cardiovascular magnetic resonance angiography (CCMRA) allow high-resolution free-breathing imaging of the coronary arteries at submillimeter resolution without contrast in a predictable scan time of ~ 10 min. The objective of this study was to determine the diagnostic accuracy of high-resolution CCMRA for CAD detection against the gold standard of invasive coronary angiography (ICA)., Methods: Forty-five patients (15 female, 62 ± 10 years) with suspected CAD underwent sub-millimeter-resolution (0.6 mm
3 ) non-contrast CCMRA at 1.5T in this prospective clinical study from 2019-2020. Prior to CCMR, patients were given an intravenous beta blockers to optimize heart rate control and sublingual glyceryl trinitrate to promote coronary vasodilation. Obstructive CAD was defined by lesions with ≥ 50% stenosis by quantitative coronary angiography on ICA., Results: The mean duration of image acquisition was 10.4 ± 2.1 min. On a per patient analysis, the sensitivity, specificity, positive predictive value and negative predictive value (95% confidence intervals) were 95% (75-100), 54% (36-71), 60% (42-75) and 93% (70-100), respectively. On a per vessel analysis the sensitivity, specificity, positive predictive value and negative predictive value (95% confidence intervals) were 80% (63-91), 83% (77-88), 49% (36-63) and 95% (90-98), respectively., Conclusion: As an important step towards clinical translation, we demonstrated a good diagnostic accuracy for CAD detection using high-resolution CCMRA, with high sensitivity and negative predictive value. The positive predictive value is moderate, and combination with CMR stress perfusion may improve the diagnostic accuracy. Future multicenter evaluation is now required., (© 2022. The Author(s).)- Published
- 2022
- Full Text
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47. Status epilepticus in pregnancy: a literature review and a protocol proposal.
- Author
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Roberti R, Rocca M, Iannone LF, Gasparini S, Pascarella A, Neri S, Cianci V, Bilo L, Russo E, Quaresima P, Aguglia U, Di Carlo C, and Ferlazzo E
- Subjects
- Female, Humans, Levetiracetam therapeutic use, Phenytoin therapeutic use, Pregnancy, Review Literature as Topic, Valproic Acid therapeutic use, Anticonvulsants therapeutic use, Status Epilepticus diagnosis, Status Epilepticus drug therapy
- Abstract
Introduction: Status epilepticus (SE) in pregnancy represents a life-threatening medical emergency for both mother and fetus. Pregnancy-related pharmacokinetic modifications and the risks for fetus associated with the use of antiseizure medications (ASMs) and anesthetic drugs complicate SE management. No standardized treatment protocol for SE in pregnancy is available to date., Areas Covered: In this review, we provide an overview of the current literature on the management of SE in pregnancy and we propose a multidisciplinary-based protocol approach., Expert Opinion: Literature data are scarce (mainly anecdotal case reports or small case series). Prompt treatment of SE during pregnancy is paramount and a multidisciplinary team is needed. Benzodiazepines are the drugs of choice for SE in pregnancy. Levetiracetam and phenytoin represent the most suitable second-line agents. Valproic acid should be administered only if other ASMs failed and preferably avoided in the first trimester of pregnancy. For refractory SE, anesthetic drugs are needed, with propofol and midazolam as preferred drugs. Magnesium sulfate is the first-line treatment for SE in eclampsia. Termination of pregnancy, via delivery or abortion, is recommended in case of failure of general anesthetics. Further studies are needed to identify the safest and most effective treatment protocol.
- Published
- 2022
- Full Text
- View/download PDF
48. Correction: Bisphenol-A Impairs Insulin Action and Up-Regulates Inflammatory Pathways in Human Subcutaneous Adipocytes and 3T3-L1 Cells.
- Author
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Valentino R, D'Esposito V, Passaretti F, Liotti A, Cabaro S, Longo M, Perruolo G, Oriente F, Beguinot F, and Formisano P
- Abstract
[This corrects the article DOI: 10.1371/journal.pone.0082099.].
- Published
- 2022
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49. Epidemiology and control of SARS-CoV-2 epidemics in partially vaccinated populations: a modeling study applied to France.
- Author
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Bosetti P, Tran Kiem C, Andronico A, Colizza V, Yazdanpanah Y, Fontanet A, Benamouzig D, and Cauchemez S
- Subjects
- Adolescent, Adult, COVID-19 Vaccines, Child, Child, Preschool, Epidemiological Models, France epidemiology, Humans, Infant, Infant, Newborn, Middle Aged, SARS-CoV-2, COVID-19, Epidemics
- Abstract
Background: Vaccination is expected to change the epidemiology and management of SARS-CoV-2 epidemics., Methods: We used an age-stratified compartmental model calibrated to French data to anticipate these changes and determine implications for the control of an autumn epidemic. We assumed vaccines reduce the risk of hospitalization, infection, and transmission if infected by 95%, 60%, and 50%, respectively., Results: In our baseline scenario characterized by basic reproduction number R
0 =5 and a vaccine coverage of 70-80-90% among 12-17, 18-59, and ≥ 60 years old, important stress on healthcare is expected in the absence of measures. Unvaccinated adults ≥60 years old represent 3% of the population but 43% of hospitalizations. Given limited vaccine coverage, children aged 0-17 years old represent a third of infections and are responsible for almost half of transmissions. Unvaccinated individuals have a disproportionate contribution to transmission so that measures targeting them may help maximize epidemic control while minimizing costs for society compared to non-targeted approaches. Of all the interventions considered including repeated testing and non-pharmaceutical measures, vaccination of the unvaccinated is the most effective., Conclusions: With the Delta variant, vaccinated individuals are well protected against hospitalization but remain at risk of infection and should therefore apply protective behaviors (e.g., mask-wearing). Targeting non-vaccinated individuals may maximize epidemic control while minimizing costs for society. Vaccinating children protects them from the deleterious effects of non-pharmaceutical measures. Control strategies should account for the changing SARS-CoV-2 epidemiology., (© 2022. The Author(s).)- Published
- 2022
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50. Isolated humeral metastasis in cervical cancer: A case report and review of the literature.
- Author
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Gioe A, Arciuolo D, Carbone V, Zannoni G, Gambacorta MA, Maccauro G, Scambia G, and Corrado G
- Subjects
- Female, Humans, Humerus pathology, Middle Aged, Neoplasm Staging, Positron Emission Tomography Computed Tomography methods, Quality of Life, Carcinoma, Squamous Cell pathology, Uterine Cervical Neoplasms pathology, Uterine Cervical Neoplasms therapy
- Abstract
There are a few reported cases of isolated localized metastasis to bone arising from cancer of uterine cervix in the literature. This is a case of uterine cervix cancer with isolated metastasis to the humerus. A 57-year-old female with a diagnosis of FIGO Stage IIB invasive squamous cell carcinoma of uterine cervix underwent neoadjuvant chemoradiation therapy (CRT) and radical surgery with complete pathological response. Nine months after the surgery, a total body positron emission tomography/computed tomography (PET/CT) scan documented a lesion localized in the proximal part of the right humerus, whereas no evidence of skeletal metastasis found elsewhere. The biopsy from the bone lesion showed a metastatic squamous cell carcinoma of the uterine cervix. A surgical excision of the humeral lesion plus chemotherapy and zoledronic acid was performed. After 9 months, the patient experienced liver metastases and died 2 months later. Bone metastasis is not so infrequent in patients with locally advanced cervical cancer. Total body PET/CT scan should be included in staging work up, and an appropriate treatment should have the primary objective of quality of life preservation., Competing Interests: None
- Published
- 2022
- Full Text
- View/download PDF
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