225 results on '"Chiodelli G."'
Search Results
202. Structural and Spectroscopic Properties of Pure and Doped Ba6Ti2Nb8O30Tungsten Bronze.
- Author
-
Massarotti, V., Capsoni, D., Bini, M., Azzoni, C. B., Mozzati, M. C., Galinetto, P., and Chiodelli, G.
- Abstract
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
- Published
- 2006
- Full Text
- View/download PDF
203. Electrons and holes in undoped Nd~2CuO~4
- Author
-
Scavini, M., Chiodelli, G., Spinolo, G., and Flor, G.
- Published
- 1994
- Full Text
- View/download PDF
204. Electrical, structural, and microstructural characterization of nanometric La0.9Sr0.1Ga0.8Mg0.2O3− δ (LSGM) prepared by high-pressure spark plasma sintering
- Author
-
Maglia, F., Anselmi-Tamburini, U., Chiodelli, G., Çamurlu, H.E., Dapiaggi, M., and Munir, Z.A.
- Subjects
- *
LANTHANUM compounds , *NANOSTRUCTURED materials , *HIGH pressure chemistry , *TEMPERATURE effect , *SINTERING , *CRYSTAL grain boundaries , *THERMAL conductivity - Abstract
Abstract: The synthesis of bulk nanometric La0.9Sr0.1Ga0.8Mg0.2O3− δ (LSGM) was investigated using the high-pressure spark plasma sintering (HP-SPS) method. The starting precursor nanopowders were synthesized by the Pechini method. Single phase, fully dense LSGM was obtained with a sintering cycle of 5 min under a uniaxial pressure of 700 MPa at sintering temperatures as low as 850 °C. This sintering temperature is several hundred degrees lower than those typically reported for LSGM materials. A considerable reduction in the final grain size of the sintered materials was consequently observed. Fully dense samples with an average grain size as low as 65 nm could be prepared by this method. Despite the short, low temperature sintering process a single phase material was obtained. Due to the small size of the constituting grains it was possible to estimate the specific grain boundary conductivity by impedance measurements. [Copyright &y& Elsevier]
- Published
- 2009
- Full Text
- View/download PDF
205. Changes in extra-virgin olive oil added with Lycium barbarum L. carotenoids during frying: Chemical analyses and metabolomic approach.
- Author
-
Blasi, F., Rocchetti, G., Montesano, D., Lucini, L., Chiodelli, G., Ghisoni, S., Baccolo, G., Simonetti, M.S., and Cossignani, L.
- Subjects
- *
OLIVE oil , *FRYING , *FUNCTIONAL foods , *FATTY acids , *PARTIAL least squares regression , *OXIDATION - Abstract
In this work, an Italian extra-virgin olive oil (EVOO) sample and the same sample added with a carotenoid-rich nutraceutical extract from Lycium barbarum L. (EVOOCar) were subjected to a frying process to comparatively assess chemical and physical changes and heat stability. Oxidation progress was monitored by measuring oil quality changes such as peroxide value, free acidity, K232, K268, and fatty acid composition as well as minor compound content, phenols, α-tocopherol, and carotenoids. An UHPLC/QTOF-MS metabolomics approach discriminated the two oil samples based on their chemical changes during frying, identifying also the phenolic classes most exposed to statistically significant variations. Partial least square discriminant analysis and volcano analysis were applied together to identify the most significant markers allowing group separation. The decrease in total phenolic content was lower in EVOOCar than in EVOO during frying. Monounsaturated and polyunsaturated fatty acids showed a significant percentage loss, 3.7% and 17.2%, respectively, in EVOO after 180 min frying at 180 °C, while they remained constant or slightly changed in EVOOCar. Zeaxanthin added to the oil rapidly decreased during the frying process. These findings showed that the addition of a carotenoid extract from L. barbarum can help to improve the oxidative stability of extra-virgin olive oil. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
206. Canakinumab as treatment for COVID-19-related pneumonia: A prospective case-control study
- Author
-
Chiara Costanzi, Daniele Generali, Ilaria Zangrandi, Valeria De Giuli, Fabio Malberti, Maria Rosa Cappelletti, Giancarlo Bosio, Andrea Machiavelli, Marianna Sirico, Antonio Fioravanti, Guglielmo Giannotti, Angelo Pan, Sophie Testa, Ottavia Bernocchi, Fabiola Giudici, Alessia Giossi, Erika Maria Viola, Alfredo Molteni, Marina Foramitti, Alessandro Morandini, Antonio Cuzzoli, Matteo Giorgi-Pierfranceschi, Maurizio Scaltriti, Sergio Venturini, Giulia Chiodelli, Chiara Campana, Alessia Zoncada, Luca Pianta, Laura Romanini, Rosa Angela Tira, Generali, D., Bosio, G., Malberti, F., Cuzzoli, A., Testa, S., Romanini, L., Fioravanti, A., Morandini, A., Pianta, L., Giannotti, G., Viola, E. M., Giorgi-Pierfranceschi, M., Foramitti, M., Tira, R. A., Zangrandi, I., Chiodelli, G., Machiavelli, A., Cappelletti, M. R., Giossi, A., De Giuli, V., Costanzi, C., Campana, C., Bernocchi, O., Sirico, M., Zoncada, A., Molteni, A., Venturini, S., Giudici, F., Scaltriti, M., and Pan, A.
- Subjects
0301 basic medicine ,Male ,medicine.medical_treatment ,Cohort Studies ,0302 clinical medicine ,Monoclonal ,80 and over ,030212 general & internal medicine ,Viral ,Prospective Studies ,Prospective cohort study ,Humanized ,Aged, 80 and over ,General Medicine ,Middle Aged ,Hospitalization ,Infectious Diseases ,medicine.anatomical_structure ,Treatment Outcome ,Settore SECS-S/01 - STATISTICA ,Cohort ,Female ,Case-Control Studie ,medicine.drug ,Cohort study ,Human ,Microbiology (medical) ,Adult ,medicine.medical_specialty ,Canakinumab ,030106 microbiology ,Pneumonia, Viral ,Antibodies, Monoclonal, Humanized ,Article ,Antibodies ,lcsh:Infectious and parasitic diseases ,03 medical and health sciences ,Internal medicine ,medicine ,Humans ,lcsh:RC109-216 ,Aged ,Mechanical ventilation ,Lung ,business.industry ,SARS-CoV-2 ,Case-control study ,COVID-19 ,Pneumonia ,medicine.disease ,Prospective Studie ,Case-Control Studies ,Cohort Studie ,business - Abstract
Highlights • Canakinumab is an IL-1β antibody that neutralizes the activity of IL-1β. • The effects of canakinumab in patients with COVID-19-related pneumonia were studied. • 33 patients received canakinumab and 15 received institutional standard of care. • Treatment with canakinumab rapidly restored normal oxygen status. • Canakinumab was also associated with favorable prognosis versus SoC., Objectives Canakinumab is an IL-1β antibody that neutralizes the activity of IL-1β. We studied the efficacy and safety of canakinumab in patients with moderate COVID-19-related pneumonia. Design The aim of our study was to evaluate the reduction in duration of hospitalization with adequate oxygen status. Forty-eight patients with moderate COVID-19-related pneumonia were asked to participate in the prospective case-control study; 33 patients (Cases) signed informed consent and received canakinumab (Cohort 1); 15 patients (Controls) refused to receive the experimental drug and received institutional standard of care (SoC), (Cohort 2). Results Hospital discharge within 21 days was seen in 63% of patients in Cohort 1 vs. 0% in Cohort 2 (median 14 vs 26 days, respectively; p
- Published
- 2021
207. Cathode materials (NiO–LiFeO2–LiCoO2) for molten carbonate fuel cell: A diffraction, NMR and conductivity study
- Author
-
Milanese, C., Berbenni, V., Bruni, G., Marini, A., Chiodelli, G., and Villa, M.
- Subjects
- *
FUEL cells , *DIRECT energy conversion , *ELECTRIC batteries , *CRYSTALLIZATION - Abstract
Abstract: The search for a NiO-based cathode for molten carbonate fuel cell has been directed towards solid solutions containing LiFeO2 and LiCoO2 in addition to nickel oxide [A. Wijayasinghe, B. Bergman, C. Lagergren, Electrochim. Acta 49 (2004) 4709.]. NiO and LiFeO2 are fully soluble in one another, while ternary solid solutions have been previously obtained only for small (<18%) and high (>90%) LiCoO2 molar contents. The goal of this work is to identify and characterize the compositions with the most promising electrical conductivity, which may be used as cathode materials. We present data relative to compositions having a constant NiO/LiFeO2 molar ratio of 3:1 and a LiCoO2 content from 5 to 30 mol%. [Copyright &y& Elsevier]
- Published
- 2006
- Full Text
- View/download PDF
208. Role of doping and CuO segregation in improving the giant permittivity of CaCu3Ti4O12
- Author
-
Capsoni, D., Bini, M., Massarotti, V., Chiodelli, G., Mozzatic, M.C., and Azzoni, C.B.
- Subjects
- *
PEROVSKITE , *OXIDE minerals , *CRYSTAL growth , *DISLOCATIONS in crystals - Abstract
Abstract: The dopant role on the electric and dielectric properties of the perovskite-type CaCu3Ti4O12 (CCTO) compound is evidenced. Impedance spectroscopy measurements show that the relevant permittivity value attributed to sintered CCTO is due to grain boundary (g.b.) effects. The g.b. permittivity value of the pure CCTO can be increased of 1–2 orders of magnitude by cation substitution on Ti site and/or segregation of CuO phase, while the bulk permittivity keeps values . Bulk and g.b. conductivity contributions are discussed: electrons are responsible for the charge transport and a mean bulk activation energy of 0.07eV is obtained at room temperature for all the examined samples. The g.b. activation energy ranges between 0.54 and 0.76eV. Defect models related to the transport properties are proposed, supported by electron paramagnetic resonance measurements. [Copyright &y& Elsevier]
- Published
- 2004
- Full Text
- View/download PDF
209. Cr and Ni doping of Li4Ti5O12: Cation distribution and functional properties
- Author
-
Doretta Capsoni, Pietro Galinetto, Stefania Ferrari, Gaetano Chiodelli, Marcella Bini, Piercarlo Mustarelli, Vincenzo Massarotti, Maria Cristina Mozzati, Capsoni, D, Bini, M, Massarotti, V, Mustarelli, P, Ferrari, S, Chiodelli, G, Mozzati, M, and Galinetto, P
- Subjects
Chemistry ,Astrophysics::High Energy Astrophysical Phenomena ,Li4Ti5O12 ,Doping ,Nanoparticle ,Titanati ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,law.invention ,Condensed Matter::Materials Science ,Colloid ,General Energy ,Nuclear magnetic resonance ,law ,Condensed Matter::Superconductivity ,Physical chemistry ,Condensed Matter::Strongly Correlated Electrons ,Microemulsion ,Soft matter ,Self-assembly ,Physical and Theoretical Chemistry ,Electron paramagnetic resonance ,Batteries, cathodes, NMR ,Powder diffraction - Abstract
Cr- and Ni-doped Li4Ti5O12 compound has been characterized through the combined use of X-ray powder diffraction, electron paramagnetic resonance (EPR), 7Li nuclear magnetic resonance magic-angle spinning (NMR-MAS), micro-Raman, and magnetization measurements. The doping, occurring on the octahedral site of the cubic Li4Ti5O12 spinel lattice, strongly affects both the local and the average structural properties. The glassy character of the observed EPR signals suggests structural disorder in the stable Li4Ti5O12 matrix and the presence of clustering phenomena or nonhomogeneous distribution of the dopant ion, as also supported by 7Li NMR-MAS, micro-Raman, and magnetization results. The computation by numerical method of the complex EPR signal of the Cr-doped sample suggests that both CrTi and CrLi substitutions occur, giving rise to two distinct EPR components, corresponding to opposite axial distortion of the relative octahedral environments. On the basis of the compositional data, defect models involving oxygen or cation vacancies are proposed to explain the conductivity of the doped material
- Published
- 2009
210. Cations distribution and valence states in Mn-substituted Li4Ti5O12 structure
- Author
-
Gaetano Chiodelli, Vincenzo Massarotti, Marcella Bini, Laura Linati, Stefania Ferrari, Doretta Capsoni, Piercarlo Mustarelli, Maria Cristina Mozzati, Carlo B. Azzoni, Capsoni, D, Bini, M, Massarotti, V, Mustarelli, P, Chiodelli, G, Azzoni, C, Mozzati, M, Linati, L, and Ferrari, S
- Subjects
Valence (chemistry) ,valenza dei cationi ,Chemistry ,General Chemical Engineering ,Li4Ti5O12 ,Analytical chemistry ,General Chemistry ,Distribuzione Cationica ,NMR ,law.invention ,Ion ,NMR spectra database ,Paramagnetism ,Lattice constant ,Octahedron ,law ,materiale catodico ,Materials Chemistry ,EPR ,Raggi X ,Electron paramagnetic resonance ,Drogaggio ,Sintesi ,Powder diffraction - Abstract
Structure, cation distribution, Mn oxidation states, and conductivity behavior of the Mn-substituted (up to 30% of Ti ions) Li4Ti5O12 have been investigated by the combined use of X-ray powder diffraction, electron paramagnetic resonance (EPR), 7Li MAS NMR, and impedance spectroscopy techniques. The spinel structure of the lithium titanate is preserved and the lattice parameter decreases with increasing the Mn content. Mn2+ ions progressively occupy the tetrahedral site up to an approximately constant value reached for 10% Mn-substituted samples. Mn3+ ions occupy both octahedral and tetrahedral sites, with a constant value on the tetrahedral one, independent of the total Mn amount; Mn4+ ions are not detected. The Mn2+ paramagnetic ions give rise to a through-space interaction with Li+ ions of both cationic sites, as evaluated by the area, proportional to the Mn2+ ions content, of a peak at ∼8 ppm observed in the 7Li NMR spectra for the substituted samples. The obtained cation distribution and the Mn valence states satisfactorily explain the decrease of conductivity observed in the Mn-doped samples with respect to the pure Li4Ti5O12
- Published
- 2008
211. /sup 31/P-NMR study of borophosphate glasses
- Author
-
Chiodelli, G
- Published
- 1987
- Full Text
- View/download PDF
212. Characterization of sol-gel LiMn2O4 spinel phase
- Author
-
Vincenzo Massarotti, Doretta Capsoni, Marcella Bini, Maria Cristina Mozzati, Carlo B. Azzoni, Gaetano Chiodelli, Alberto Paleari, Massarotti, V, Capsoni, D, Bini, M, Chiodelli, G, Azzoni, C, Mozzati, M, and Paleari, A
- Subjects
Annealing (metallurgy) ,Inorganic chemistry ,Spinel ,Analytical chemistry ,Nanoparticle ,chemistry.chemical_element ,Manganese ,engineering.material ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials ,Inorganic Chemistry ,chemistry ,Materials Chemistry ,Ceramics and Composites ,engineering ,Particle size ,Crystallite ,Physical and Theoretical Chemistry ,manganese oxides, magnetic properties, electric properties, sol-gel ,Solid solution ,Sol-gel - Abstract
Lithium manganese spinel Li1+yMn2-yO4 (0.0 less than or equal to y less than or equal to 0.07) synthesized by the sol-gel process is studied with a focus on the effects of the changes of formation conditions which can sensibly determine the mean crystallite size from a few nanometers to several hundred nanometers. Changes of stoichiometry and abundance of the spinel phase can be observed in the 573 less than or equal to T-A (K) less than or equal to 1073 range of annealing temperature (T-A). Comparing spinel phases obtained by sol-gel and solid state synthesis evidences the correlation among composition, structure, and electric and magnetic properties. (C) 1999 Academic Press.
- Published
- 1999
213. Electric and magnetic properties of LiMn2O4- and Li2MnO3-type oxides
- Author
-
Alberto Paleari, Vincenzo Massarotti, Marcella Bini, Carlo B. Azzoni, Gaetano Chiodelli, Doretta Capsoni, Maria Cristina Mozzati, Massarotti, V, Capsoni, D, Bini, M, Chiodelli, G, Azzoni, C, Mozzati, M, and Paleari, A
- Subjects
Magnetic moment ,Chemistry ,manganese oxides, magnetic interactions, crystal structure ,Spinel ,Analytical chemistry ,engineering.material ,Condensed Matter Physics ,Magnetic susceptibility ,Electronic, Optical and Magnetic Materials ,Ion ,Inorganic Chemistry ,Nuclear magnetic resonance ,Electrical resistivity and conductivity ,Seebeck coefficient ,X-ray crystallography ,Materials Chemistry ,Ceramics and Composites ,engineering ,Charge carrier ,Physical and Theoretical Chemistry - Abstract
XRD measurements proved the coexistence of spinel, lithium-rich spinel, and rock-salt phases in the Li-Mn-O system. An investigation of the electrical properties, carried out on polycrystalline samples, shows that Li{sub 2}MnO{sub 3} has insulating behavior while the spinel phases provide an example of hopping conduction mechanism. The negative Seebeck coefficient suggests that electrons constitute the charge carriers and their number is consistent with the fraction of Mn{sup 3+} over the total number of Mn{sup 3+} and Mn{sup 4+} sites in the spinel structure. The static magnetic susceptibility results agree with the presence of the Mn{sup 3+} ions in high spin configuration.
- Published
- 1997
214. The Life Project of People with Autism and Intellectual Disability: Investigating Personal Preferences and Values to Enhance Self-Determination.
- Author
-
Corti S, Cavagnola R, Carnevali D, Leoni M, Francesco F, Galli L, Alzani L, Michelini G, Miselli G, and Chiodelli G
- Subjects
- Humans, Quality of Life, Communication, Autistic Disorder, Intellectual Disability, Disabled Persons
- Abstract
People with autism and intellectual disabilities, much like individuals with typical development, share a fundamental right and aspiration to realise their own life projects. However, this natural pursuit is uniquely challenging for individuals with autism and intellectual disabilities due to their communication and adaptive hurdles. This growing need has prompted the development of a specific procedure for crafting life projects geared toward enhancing their quality of life. In the present work, we will describe the six key steps and the corresponding assessment, support, and verification tools essential for establishing and actualising the life project for individuals with disabilities, as conceptualised by the Italian Society of Neurodevelopmental Disorders (SIDIN). We will start by delineating diverse preference and value assessment procedures, showcasing an array of tools tailored to accommodate the distinct characteristics of adaptive and communicative functioning in individuals with disabilities. Following this, we will provide a succinct overview of support needs assessment tools. Subsequently, we will introduce the Ecological Life Balance, which serves as an integrative tool for harmonising various assessment systems. We will propose methods for defining existential goals that prioritise quality of life and suggest strategies for implementing support plans. Lastly, we will delve into the methodologies for monitoring and verifying outcomes in the final section.
- Published
- 2023
215. Canakinumab as treatment for COVID-19-related pneumonia: A prospective case-control study.
- Author
-
Generali D, Bosio G, Malberti F, Cuzzoli A, Testa S, Romanini L, Fioravanti A, Morandini A, Pianta L, Giannotti G, Viola EM, Giorgi-Pierfranceschi M, Foramitti M, Tira RA, Zangrandi I, Chiodelli G, Machiavelli A, Cappelletti MR, Giossi A, De Giuli V, Costanzi C, Campana C, Bernocchi O, Sirico M, Zoncada A, Molteni A, Venturini S, Giudici F, Scaltriti M, and Pan A
- Subjects
- Adult, Aged, Aged, 80 and over, Case-Control Studies, Cohort Studies, Female, Hospitalization statistics & numerical data, Humans, Male, Middle Aged, Prospective Studies, SARS-CoV-2 immunology, Treatment Outcome, Antibodies, Monoclonal, Humanized therapeutic use, COVID-19 complications, Pneumonia, Viral complications, Pneumonia, Viral drug therapy
- Abstract
Objectives: Canakinumab is an IL-1β antibody that neutralises the activity of IL-1β. This study examined the efficacy and safety of canakinumab in patients with moderate COVID-19-related pneumonia., Design: This study aimed to evaluate the reduction in duration of hospitalisation with adequate oxygen status. Forty-eight patients with moderate COVID-19-related pneumonia were asked to participate in the prospective case-control study: 33 patients (cases) signed informed consent and received canakinumab (Cohort 1) and 15 patients (Controls) refused to receive the experimental drug and received institutional standard of care (Cohort 2)., Results: Hospital discharge within 21 days was seen in 63% of patients in Cohort 1 vs. 0% in Cohort 2 (median 14 vs. 26 days, respectively; p < 0.001). There was significant clinical improvement in ventilation regimes following administration of canakinumab compared with Cohort 2 (Stuart-Maxwell test for paired data, p < 0.001). Patients treated with canakinumab experienced a significant increase in PaO
2 :FiO2 (p < 0.001) and reduction in lung damage by CT (p = 0.01), along with significant decreases in immune/inflammation markers that were not observed in Cohort 2. Only mild side-effects were seen in patients treated with canakinumab; survival at 60 days was 90.0% (95% CI 71.9-96.7) in patients treated with canakinumab and 73.3% (95% CI 43.6-89.1) for Cohort 2., Conclusions: Treatment with canakinumab in patients with COVID-19-related pneumonia rapidly restored normal oxygen status, decreased the need for invasive mechanical ventilation, and was associated with earlier hospital discharge and favourable prognosis versus standard of care., (Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2021
- Full Text
- View/download PDF
216. Neurodevelopmental disorders and development of project of lifein a lifespan perspective: between habilitation and quality of life.
- Author
-
Cavagnola R, Alzani L, Carnevali D, Chiodelli G, Corti S, Fioriti F, Galli ML, Leoni M, Michelini G, and Miselli G
- Subjects
- Adult, Child, Humans, Neurodevelopmental Disorders psychology, Neurodevelopmental Disorders rehabilitation, Patient Care Planning organization & administration, Quality of Life
- Abstract
For some years, the term "project of life" has become widely used in the field of neurodevelopmental disorders, and, at the same time, it has begun to make its way in many social and health planning documents. However, beyond its relatively widespread use, this term does not yet possess an adequate and shared frame of the main underlying decision-making processes. In particular, there is a need to identify the crucial questions for orienting the choice of goals within the adolescent transition, which represents the complex hinge between childhood and adulthood. Moreover, adulthood, which is often completely devoid of culturally and socially shared references, is still critical precisely because of the lack of future direction prompts usually represented by the stages of development. In this case, the themes of quality of life functioning as a guiding compass appear pertinent and much more relevant. The present contribution is, therefore, an attempt to present, in a unitary manner, the decision-making processes and questions at the basis of a construct of "project of life" shared within the scientific and associative communities.
- Published
- 2020
- Full Text
- View/download PDF
217. Stress and wellbeing among professionals working with people with neurodevelopmental disorders. Review and intervention perspectives.
- Author
-
Leoni M, Alzani L, Carnevali D, Cavagnola R, Chiodelli G, Corti S, Fioriti F, Galli ML, Michelini G, and Miselli G
- Subjects
- Adult, Autism Spectrum Disorder rehabilitation, Burnout, Professional epidemiology, Burnout, Professional psychology, Child, Humans, Job Satisfaction, Quality of Life, Stress, Psychological epidemiology, Health Personnel psychology, Neurodevelopmental Disorders rehabilitation, Stress, Psychological psychology
- Abstract
Supporting individuals with NDD is extremely demanding, with significant exposure to critical contexts and events, and painful ongoing experiences. Stress and burnout condition is a main concern with growing interest in research, despite the lack of consensus on theoretical explanatory models and modification standards.The paper provides an up-to-date review of risk factors and involved processes, and presents evidence-based procedures and protocols to implement effective preventive actions addressing both organizational and individual factors. The aim is to offer a global understanding of the subject and offer examples of practical plans to increase the impact on the quality of life of clients and staff members.
- Published
- 2020
- Full Text
- View/download PDF
218. Untargeted metabolomics with multivariate analysis to discriminate hazelnut (Corylus avellana L.) cultivars and their geographical origin.
- Author
-
Ghisoni S, Lucini L, Rocchetti G, Chiodelli G, Farinelli D, Tombesi S, and Trevisan M
- Subjects
- Chile, Chromatography, High Pressure Liquid, Corylus classification, Corylus metabolism, Discriminant Analysis, Georgia (Republic), Italy, Mass Spectrometry, Metabolomics, Multivariate Analysis, Nuts classification, Nuts metabolism, Phenols chemistry, Phenols metabolism, Plant Extracts metabolism, Sterols chemistry, Sterols metabolism, Turkey, Corylus chemistry, Nuts chemistry, Plant Extracts chemistry
- Abstract
Background: In the present study a metabolomics-based approach was used to discriminate among different hazelnut cultivars and to trace their geographical origins. Ultra-high-pressure liquid chromatography coupled to quadrupole-time-of-flight mass spectrometry (UHPLC-ESI/QTOF-MS) was used to profile phenolic and sterolic compounds., Results: Compounds were identified against an in-house database using accurate monoisotopic mass and isotopic patterns. The screening approach was designed to discern 15 hazelnut cultivars and to discriminate among the geographical origins of six cultivars from the four main growing regions (Chile, Georgia, Italy, and Turkey). This approach allowed more than 1000 polyphenols and sterols to be annotated. The metabolomics data were elaborated with both unsupervised (hierarchical clustering) and supervised (orthogonal projections to latent structures discriminant analysis, OPLS-DA) statistics. These multivariate statistical tools allowed hazelnut samples to be discriminated, considering both 'cultivar type' and 'geographical origin'. Flavonoids (anthocyanins, flavanols and flavonols - VIP scores 1.34-1.49), phenolic acids (mainly hydroxycinnamics - VIP scores 1.35-1.55) together with cholesterol, ergosterol, and stigmasterol derivatives (VIP scores 1.34-1.49) were the best markers to discriminate samples according to geographical origin., Conclusions: This work illustrates the potential of untargeted profiling of phenolics and sterols based on UHPLC-ESI/QTOF mass spectrometry to discriminate hazelnut and support authenticity and origin. © 2019 Society of Chemical Industry., (© 2019 Society of Chemical Industry.)
- Published
- 2020
- Full Text
- View/download PDF
219. Increased CNTF levels in adults with autism spectrum disorders.
- Author
-
Brondino N, Rocchetti M, Fusar-Poli L, Damiani S, Goggi A, Chiodelli G, Corti S, Visai L, and Politi P
- Subjects
- Adult, Biomarkers blood, Enzyme-Linked Immunosorbent Assay, Female, Humans, Male, Young Adult, Autism Spectrum Disorder blood, Ciliary Neurotrophic Factor blood, Intellectual Disability blood
- Abstract
Objectives: Ciliary neurotrophic factor (CNTF) is a neurotrophin which could signal neuronal suffering and at the same time acts as a neuroprotective agent. In the present study we aimed to evaluate CNTF serum levels in autism spectrum disorders (ASDs). In fact, considering the role of CNTF as a neuronal damage signal and the role of neuroinflammation, excito-inhibitory imbalance and excitotoxicity in the pathogenesis of ASDs, a possible alteration of CNTF in ASDs could be hypothesised. Methods: We recruited 23 individuals with ASDs and intellectual disability (ID), 20 ID subjects and 26 typical adults. A complete medical and psychopathological characterisation of the participants was performed. CNTF serum levels were measured with ELISA. Results: CNTF serum levels were significantly higher in the ASD + ID group compared to ID ( p < .001) or typically developed subjects ( p < .001). Conclusions: CNTF may be considered as a potential biomarker candidate for ASDs in the context of severe ID. Our results support the hypothesis of neurotrophic imbalance in ASDs.
- Published
- 2019
- Full Text
- View/download PDF
220. Bioaccessibility of phenolic compounds following in vitro large intestine fermentation of nuts for human consumption.
- Author
-
Rocchetti G, Chiodelli G, Giuberti G, and Lucini L
- Subjects
- Antioxidants analysis, Antioxidants metabolism, Arachis chemistry, Coumaric Acids analysis, Coumaric Acids metabolism, Fermentation, Humans, Juglans chemistry, Nuts chemistry, Phenols analysis, Pistacia chemistry, Plant Extracts analysis, Arachis metabolism, Intestine, Large metabolism, Juglans metabolism, Nuts metabolism, Phenols metabolism, Pistacia metabolism, Plant Extracts metabolism
- Abstract
A bioaccessibility study of polyphenols after in vitro simulated large intestine fermentation was carried out on edible nuts. Raw nuts were also analysed for total phenolic content and antioxidant potential, considering both bound and free phenolics. The highest phenolic content was found in walnuts, followed by pistachios extracts (596.9 and 410.1 mg gallic acid equivalents 100 g
-1 , respectively). Consistently, the total antioxidant capacity was highest in walnuts (3689.7 μM trolox equivalents 100 g-1 ) followed by peanuts and pistachios (3169.6 and 2990.1 μM trolox equivalents 100 g-1 , respectively). Data showed high correlations between total phenolics and both antioxidant activities. The metabolomics-based phenolic profile depicted during in vitro fermentation showed a degradation of higher-molecular-weight phenolics over 48 hours of faecal fermentation, with a concurrent increase in low-molecular-weight compounds (hydroxybenzoic and hydroxycinnamic acids, alkylphenols, and tyrosols). Our findings indicate that nuts deliver polyphenols into the colon, with bioaccessibility values not negligible for alkylphenols, tyrosols and phenolic acids., (Copyright © 2017 Elsevier Ltd. All rights reserved.)- Published
- 2018
- Full Text
- View/download PDF
221. Impact of boiling on free and bound phenolic profile and antioxidant activity of commercial gluten-free pasta.
- Author
-
Rocchetti G, Lucini L, Chiodelli G, Giuberti G, Montesano D, Masoero F, and Trevisan M
- Subjects
- Chenopodium quinoa metabolism, Chromans, Flavonoids, Flour, Free Radical Scavengers, Glutens, Hydroxybenzoates, Oryza metabolism, Plant Extracts, Antioxidants metabolism, Cooking, Diet, Gluten-Free, Edible Grain metabolism, Hot Temperature adverse effects, Phenols chemistry
- Abstract
Cooking by boiling dry pasta could have varying degrees of influence on nutritional and functional components. In the present study, its effect on total phenolic content and antioxidant capacity, as well as on the comprehensive profile of free and bound phenolics, was investigated in six commercial gluten-free (GF) pasta products. Overall, the heat treatment caused a significant reduction (P<0.01) of the total phenolic content as well as FRAP reducing power and ORAC radical scavenging, with significant differences among the pasta samples considered. The highest values were recorded in free phenolic fraction remaining in black rice (41mggallic acid equivalents100g
-1 and 25mmolTrolox Equivalents100g-1 ) and quinoa (24mggallic acid equivalents100g-1 and 14mmolTrolox Equivalents100g-1 ) cooked GF pasta. Significant correlations (P<0.01) could be found between total phenolics and both the antioxidant capacity assays performed. UHPLC-ESI/QTOF-MS mass profiling allowed confirming the spectrophotometric results, while identifying the amount of free and bound fractions. Among phenolic classes, lignans exhibited the highest decrease during the cooking process, followed by stilbenes and flavonoids. However, phenolic acids and other phenolics showed the highest stability. Furthermore, cooking by boiling strongly lowered the bound-to-free ratio of phenolic compounds, by an averaged factor ranging from 14-folds for flavonoids to 5-folds for other classes of phenolics., (Copyright © 2017 Elsevier Ltd. All rights reserved.)- Published
- 2017
- Full Text
- View/download PDF
222. Evaluation of phenolic profile and antioxidant capacity in gluten-free flours.
- Author
-
Rocchetti G, Chiodelli G, Giuberti G, Masoero F, Trevisan M, and Lucini L
- Subjects
- Antioxidants analysis, Phenols analysis, Diet, Gluten-Free methods, Edible Grain chemistry, Flour analysis, Phenols chemistry
- Abstract
The characterization of phenolic fingerprints in common gluten-free flours is still scarce. Total phenolic and anthocyanin contents, antioxidant capacity and the entire phenolic profile were investigated for extracts from chickpea, sorghum, quinoa, black rice, lentil, amaranth, brown rice, oat and white rice flours, using soft wheat flour as a comparison. The highest phenolic content was found in black rice, followed by quinoa extracts (147.9 and 87.2mg gallic acid equivalents 100g
-1 , respectively). Consistently, antioxidant capacity was highest in black rice and quinoa flours (34mmol trolox equivalents 100g-1 ), while anthocyanins were highest in black rice flour. Data showed a high correlation between phenolic content and both reducing and scavenging activities, with Pearson's coefficient of 0.90 and 0.91, respectively. Although the entire phenolic profile was diverse and differed among flours, these represent a valuable source of health-promoting compounds, mainly belonging to flavonoids, phenolic acids and lignans., (Copyright © 2017 Elsevier Ltd. All rights reserved.)- Published
- 2017
- Full Text
- View/download PDF
223. Phenolic profile and fermentation patterns of different commercial gluten-free pasta during in vitro large intestine fermentation.
- Author
-
Rocchetti G, Lucini L, Chiodelli G, Giuberti G, Gallo A, Masoero F, and Trevisan M
- Subjects
- Antioxidants, Cicer, Flour analysis, Gastrointestinal Microbiome physiology, Humans, Intestine, Large metabolism, Lens Plant, Metabolomics, Models, Biological, Sorghum, Diet, Gluten-Free, Digestion physiology, Edible Grain metabolism, Fermentation physiology, Phenols analysis
- Abstract
The fate of phenolic compounds, along with short-chain fatty acids (SCFAs) production kinetics, was evaluated on six different commercial gluten-free (GF) pasta samples varying in ingredient compositions, focussing on the in vitro faecal fermentation after the gastrointestinal digestion. A general reduction of both total phenolics and reducing power was observed in all samples, together with a substantial change in phenolic profile over 24h of faecal fermentation, with differences among GF pasta samples. Flavonoids, hydroxycinnamics and lignans degraded over time, with a concurrent increase in low-molecular-weight phenolic acids (hydroxybenzoic acids), alkylphenols, hydroxybenzoketones and tyrosols. Interestingly, discriminant analysis also identified several alkyl derivatives of resorcinol as markers of the changes in phenolic profile during in vitro fermentation. Furthermore, degradation pathways of phenolics by intestinal microbiota have been proposed. Considering the total SCFAs and butyrate production during the in vitro fermentation, different fermentation kinetics were observed among GF pasta post-hydrolysis residues., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2017
- Full Text
- View/download PDF
224. Effect of Different Aloe Fractions on the Growth of Lactic Acid Bacteria.
- Author
-
Chiodelli G, Pellizzoni M, Ruzickova G, and Lucini L
- Subjects
- Animals, Anti-Infective Agents pharmacology, Fermentation, Humans, Lactic Acid metabolism, Lactobacillus growth & development, Lactobacillus metabolism, Milk microbiology, Plant Epidermis, Plant Leaves, Aloe chemistry, Lactobacillus drug effects, Phenols pharmacology, Polysaccharides pharmacology, Prebiotics, Probiotics
- Abstract
Several foods on the market, such as yogurt and fermented milk, include mixtures of prebiotics and probiotic microorganisms effective in promoting the proliferation and equilibrium of intestinal bacteria, thus improving gut health. Particularly, researchers and the public have shown increasing interest in the combination of probiotics with natural substances that promote health or that can act as substrates to promote bacterial growth. The aim of this study is to evaluate the effects of different extracts of Aloe barbadensis and Aloe arborescens in fermented milk, taking into account both the prebiotic effect of aloe polysaccharides and the antimicrobial activity of several secondary metabolites. The results demonstrate a beneficial effect of 5% aloe inner gel on Lactobacillus growth and confirm the antimicrobial activity of the phenolic compounds peculiar of green rind extracts., (© 2016 Institute of Food Technologists®.)
- Published
- 2017
- Full Text
- View/download PDF
225. [The neuroleptic malignant syndrome (NMS). A report of a clinical case with a protracted and recurrent course. A review of the literature].
- Author
-
Marelli A, Bodini P, Dizioli P, Chiodelli G, Guarneri M, and Boldori L
- Subjects
- Adult, Antipsychotic Agents administration & dosage, Combined Modality Therapy, Drug Therapy, Combination, Female, Haloperidol administration & dosage, Haloperidol adverse effects, Humans, Neuroleptic Malignant Syndrome etiology, Neuroleptic Malignant Syndrome therapy, Recurrence, Time Factors, Antipsychotic Agents adverse effects, Haloperidol analogs & derivatives, Neuroleptic Malignant Syndrome diagnosis
- Abstract
Neuroleptic malignant syndrome (NMS), characterized by catatonic behavior, generalized muscular rigidity, hyperthermia and autonomic dysfunction, can suddenly arise in patients treated with neuroleptic agents and carries a high mortality rate even today. A case of NMS due to i.m. therapy with haloperidol decanoate is reported in this paper, characterized by sustained course and a severe relapse due to a different therapy with another neuroleptic agent. The patient however, after a prolonged remission from the relapse, was able to resume long term therapy with neuroleptic drugs. The importance of monitoring blood levels of CPK during the follow-up and the effectiveness of therapy with bromocriptine and dantrolene in confirmed. Although the patient presented a good clinical response, she developed permanent cerebral and muscular damage. A wide review of the literature on NMS is reported to throw light on this syndrome, whose recognition and prompt diagnosis are necessary to reduce mortality.
- Published
- 1996
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.