607 results on '"M., Barba"'
Search Results
152. Restriction Fragment Length Polymorphism Analyses and Dot Hybridizations Distinguish Mycoplasmalike Organisms Associated withFlavescence Doreeand Southern European Grapevine Yellows Disease in Italy
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Ing-Ming Lee, Ellen L. Dally, M. Barba, R. Credi, B Di Terlizzi, Assunta Bertaccini, Vito Savino, L. Carraro, R. Osler, and Robert E. Davis
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Genetics ,Hybridization probe ,Plant virus ,Flavescence dorée ,Grapevine yellows ,Plant Science ,Molecular cloning ,Biology ,Restriction fragment length polymorphism ,Agronomy and Crop Science ,DNA sequencing ,Aster yellows - Abstract
Biotinylated cloned DNA probes were employed in dot hybridizations and restriction fragment length polymorphism (RFLP) analyses to compare mycoplasmalike organisms (MLOs) associated with two grapevine yellows diseases (strain FDU of flavescence doree MLO from northern Italy and strain FDB of southern European grapevine yellows MLO from southern Italy) and Italian periwinkle virescence disease (MLO strain G from northern Italy). Results from dot hybridizations using six probes containing cloned DNA of MLO strain FDU, of MLO strain G, or of American aster yellows MLO strain AY1, revealed that FDU and FDB shared some regions of DNA sequence homology with one another as well as with MLO strains G and AY1, but all four MLOs were mutually distinguished [...]
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- 1993
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153. Iberoamerica, una Comunidad
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Benjamin Keen, Enrique M. Barba, Jose Manuel Perez Prendes, Arturo Uslar Pietri, Joaquim Verissimo Serrao, and Silvio Zavala
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Cultural Studies ,History - Published
- 1991
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154. Lung injury mediated by antibodies to endothelium. I. In the rabbit a repeated interaction of heterologous anti-angiotensin-converting enzyme antibodies with alveolar endothelium results in resistance to immune injury through antigenic modulation
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Giovanni Camussi, Jan R. Brentjens, G. Andres, G. H. Downie, Lilly M. Barba, and Peter R. B. Caldwell
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Lung Diseases ,Pathology ,medicine.medical_specialty ,Time Factors ,Endothelium ,Immunology ,Pulmonary Edema ,Lung injury ,Peptidyl-Dipeptidase A ,Immunoglobulin G ,Antibodies ,Immunoglobulin Fab Fragments ,Antigen ,medicine ,Immunology and Allergy ,Animals ,Lung ,biology ,Angiotensin-converting enzyme ,Articles ,Molecular biology ,medicine.anatomical_structure ,biology.protein ,Antigenic Modulation ,Female ,Rabbits ,Pulmonary alveolus ,Antibody - Abstract
To study the effects of relatively long-term interaction of antibodies with surface antigens of lung endothelium, rabbits were intravenously injected for a maximum of 4 d with goat anti-rabbit lung angiotensin-converting enzyme (Gt anti-RbACE) antibodies. On day 1 69%, on day 2 13%, and on days 3 and 4 of injection none of the rabbits developed lethal pulmonary edema. By immunofluorescence microscopy, deposits of GtIgG, frequently in association with RbC3, were found along the endothelium of alveolar capillary walls in all rabbits studied on day 1, in 57% on day 2, in 33% on day 3, and in none of them on day 4. While in vitro anti-ACE antibodies bound in a linear pattern to the lung endothelium, the binding pattern in vivo was distinctly granular. The in vivo interaction of antibodies with ACE also redistributed ACE in a granular pattern along capillary walls. In contrast to the granular deposition of injected anti-ACE IgG and F(ab')2 fragments of anti-ACE IgG, Fab fragments of anti-ACE IgG localized, without fixing C3, in a linear pattern along the endothelium of lung capillaries and did not modify the normal distribution of ACE. However, when the injection of Fab fragments of Gt anti-RbACE IgG was followed by an injection of Rb anti-GtIgG serum, granular deposits of Gt Fab fragments, RbIgG and RbC3 were seen along alveolar capillary walls. Biochemical measurement of ACE activity in lung homogenates provided data in agreement with those obtained by immunofluorescence microscopy, showing diminished activity to none on day 4, with some return of ACE activity on day 5, 24 h after the last injection of antibody, and normal values on day 21. The results obtained indicate that divalent antibodies to an antigen expressed on the plasma membrane of rabbit lung endothelial cells promotes a rapid redistribution of antigenic receptors, fixation of complement and, in surviving rabbits, disappearance of the antigen from the endothelial cells that are no longer susceptible to immune injury. In vivo "immunologic enzymectomy" induced by a ligand-surface antigen interaction is an example of antigenic modulation. These events may have an important role in the pathogenesis of inflammatory lesions induced by antibodies reacting with antigens expressed on the plasma membrane of cells in the lung and in other organs.
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- 1983
155. Satellite attitude acquisition by momentum transfer
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Peter M. Barba and Jean N. Aubrun
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Physics ,Spacecraft ,business.industry ,Momentum transfer ,Aerospace Engineering ,Kinetic energy ,Reaction wheel ,Euler equations ,symbols.namesake ,Classical mechanics ,symbols ,Orbit (dynamics) ,Satellite ,business ,Quasistatic process - Abstract
Transition between spin-stabilized orbit injection and three-axis control mode may be achieved by simple momentum transfer from the satellite to a momentum wheel. This open-loop process provides both despin and spacecraft reorientation. A time simulation of the maneuver, illustrated by means of a computer-animated motion picture, reveals an extremely complex motion. However, key features may be explained in a quasistatic fashion using geometrical interpretation of energy and momentum laws. An evolution equation is presented to help design wheel-torquing strategies.
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- 1976
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156. Olive latent ringspot virus, a newly recognised virus infecting olive in Italy
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Vito Nicola Savino, M. Barba, and Donato Gallitelli
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Infectivity ,biology ,viruses ,Plant virus ,Oleaceae ,Nepovirus ,Nucleic acid ,RNA ,biology.organism_classification ,Agronomy and Crop Science ,Polyacrylamide gel electrophoresis ,Virology ,Virus - Abstract
SUMMARY A manually transmissible virus, for which the name olive latent ringspot virus (OLRV) is proposed, was isolated from a symptomless olive tree. The virus was mechanically transmitted to test plants. Purified preparations of OLRV contained three classes of isometric particle, c. 28 nm in diameter, with sedimentation coefficients of 525 (T), 975 (M) and 1325 (B) and containing 0, 30 and 43% nucleic acid respectively. At equilibrium in CsCl gradients, the buoyant densities of T and M components were 1–29 and 1–43 g/cm3 respectively, whereas B component separated into two sub-components with buoyant densities of 1–51 g/cm3 (BJ and 1–52 g/cm3 (B2). Particle preparations contained two species of single-stranded RNA with mol. wt 1–40 times 106 and 2–65 times 106, both necessary for infectivity. The coat protein of OLRV, dissociated under strong denaturing conditions, separated into four components in polyacrylamide gel electrophoresis. Over 75% of the protein was found in a band with mol. wt 57 600, but all four components were recognised as oligomers of a monomeric form with mol. wt 14 300. OLRV was serologically unrelated to 26 different isometric plant viruses including 17 recognised nepoviruses. Its properties strongly indicate that it is a hitherto undescribed member of the nepovirus group.
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- 1983
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157. Structure of (3β,25R)-spirost-5-ene-3,17-diol hemihydrate (pennogenin)
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M. Soriano-García, I. López y Celis, R. A. Toscano, J. M. Barba Chávez, P. Enríquez, A. Hernández R., and A. Rodríguez
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chemistry.chemical_compound ,Chemistry ,Stereochemistry ,Hemihydrate ,Diol ,General Medicine ,Medicinal chemistry ,General Biochemistry, Genetics and Molecular Biology ,Ene reaction - Published
- 1987
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158. Dissociation of aspartate aminotransferase into subunits. Effect of ligands upon this dissociation
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M Arrio-Dupont, J M Barba, D Verge, and I Cournil
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chemistry.chemical_classification ,Sucrose ,Stereochemistry ,Cell Biology ,Phosphate ,Biochemistry ,Dissociation (chemistry) ,chemistry.chemical_compound ,Cytosol ,Monomer ,Enzyme ,chemistry ,Biophysics ,Ultracentrifuge ,Molecular Biology ,Pyridoxal - Abstract
Frontal and zonal analysis of the chromatography of aspartate aminotransferase (EC2.61.1), pig heart cytosolic enzyme, on Bio-Gel P150 shows that holo- and apoenzyme can dissociate at pH 8.3. Ultracentrifugation and fluorescence depolarization confirm this result. Kinetic analysis of the fluorescence depolarization experiments favors a biphasic phenomenon: a few minutes for the faster one and several hours for the slower one. The apparent dissociation constant is 0.8 muM for the apoenzyme and 0.18 muM for the pyridoxal 5'-phosphate form of the holoenzyme. In the presence of sucrose or 0.1 M L-aspartate or a mixture of 70 mM L-glutamate and 2 mM alpha-ketoglutarate, the holoenzyme is dimeric at concentrations higher than 5 nM. The addition of a mixture of the substrates L-glutamate and alpha-ketoglutarate to a monomeric holoenzyme leads to dimerization. The stability of the dimeric form is in the order: holoenzyme + substrates greater than apoenzyme.
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- 1975
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159. In vitro Culture of Grapevine Infected by Closterovirus Type III
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F. Faggioli, M. Barba, and A. Cupidi
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Physiology ,fungi ,food and beverages ,Plant Science ,Biology ,Herbaceous plant ,biology.organism_classification ,Virology ,In vitro ,Virus ,Cutting ,Tissue culture ,Horticulture ,Healthy control ,Genetics ,Closterovirus ,Viral disease ,Agronomy and Crop Science - Abstract
Herbaceous cuttings collected in autumn from a closterovirus type III infected grapevine plant (cv. Merlot) were micropropagated in vitro. Results showed thai cultured plants did not present any leaf symptoms even if they grow slower than healthy control plants by a ratio of about 1/2. The virus concentration, as estimated by electron microscopy, was found constant when observed fortnightly over a period of 75 days. The number of particles was about 30 times higher than in viral preparations obtained from infected material collected in the field.
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- 1989
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160. Quaternion feedback for spacecraft large angle maneuvers
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Bong Wie and Peter M. Barba
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Spacecraft ,Computer science ,business.industry ,Applied Mathematics ,Motion (geometry) ,Aerospace Engineering ,Space Shuttle ,Proportional control ,Stability (probability) ,Euler equations ,symbols.namesake ,Space and Planetary Science ,Control and Systems Engineering ,Control theory ,Modulation (music) ,symbols ,Torque ,Electrical and Electronic Engineering ,Quaternion ,business ,Inertial navigation system - Abstract
This paper presents the stability and control analysis for large angle feedback reorientation maneuvers using reaction jets. The strapdown inertial reference system provides spacecraft attitude changes in terms of quaternions. Reaction jets with pulse-width pulse-frequency modulation provide nearly proportional control torques. The use of quaternions as attitude errors for large angle feedback control is investigated. Closed-loop stability analysis for the three-axis maneuvers is performed using the Liapunov stability theorem. Unique characteristics of the quaternion feedback are discussed for single-axis motion using a phase-plane plot. The practical feasibility of a three-axis large angle feedback maneuver is demonstrated by digital simulations.
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- 1985
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161. PRUNE DWARF VIRUS IN PRUNUS AVIUM L. AFFECTED BY FLAT LIMB AND STEM PITTING
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M. Barba and F. Gualaccini
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Horticulture ,Prunus ,biology ,Botany ,Prune dwarf virus ,biology.organism_classification - Published
- 1983
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162. ROLE OF SEEDS IN THE EPIDEMIOLOGY OF TWO ALMOND VIRUSES
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A. Quacquarelli, M. Barba, and G. Pasquini
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Horticulture ,medicine.medical_specialty ,Epidemiology ,medicine ,Biology - Published
- 1986
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163. Attitude Stability of a Spinning Satellite in an Elliptic Orbit
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Thomas R. Kane and P. M. Barba
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Physics ,Elliptic orbit ,Classical mechanics ,Mechanics of Materials ,Mechanical Engineering ,Satellite ,Condensed Matter Physics ,Attitude stability ,Stability (probability) ,Spinning - Abstract
Floque´t theory is used to develop a procedure for testing the stability of a spinning, symmetric satellite whose mass center moves on an elliptic orbit while the symmetry axis remains normal to the orbit plane.
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- 1966
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164. Effects of energy dissipation on a spinning satellite
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P. M. Barba and Thomas R. Kane
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Range (mathematics) ,Work (thermodynamics) ,Classical mechanics ,Differential equation ,Stability (learning theory) ,Aerospace Engineering ,Circular orbit ,Dissipation ,Dynamical system ,Connection (mathematics) - Abstract
I has long been known, and recently was reaffirmed that energy dissipation can have profound effects on the stability of motion of a dynamical system; and there is little doubt that such dissipation actually occurs in every real system. Consequently, no solution of a stability problem in which dissipation effects are left out of account is completely satisfying; and the obvious question that presents itself is this: How can energy dissipation be taken into account? The present paper is intended to shed light on this subject in connection with one of the basic problems of space mechanics, that of the symmetric, spinning satellite in a circular orbit, which was treated previously in Refs. 2-4. One of the difficulties in dealing with energy dissipation is that generality and incisiveness appear to be mutually exclusive in connection with this topic. That is, one may analyze a system having well-defined physical properties and thus obtain results of unquestionable validity, but of limited applicability; or one may be less specific about the physics of the system under consideration, thereby widening the range of applicability at the possible expense of validity. The former course of action is adopted in the present work and appears to be justified by the fact that the results obtained depend intimately on all system parameters. The paper is divided into three parts. In the first of these, the system to be analyzed is described in detail, and differential equations of motion are written. The second part deals with the construction of a Routhian array which is then used, in the third part, to obtain answers to a number of specific stability questions.
- Published
- 1966
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165. Dissociation of aspartate aminotransferase into subunits. Effect of ligands upon this dissociation
- Author
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I, Cournil, J M, Barba, D, Verge, and M, Arrio-Dupont
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Molecular Weight ,Binding Sites ,Spectrometry, Fluorescence ,Macromolecular Substances ,Protein Conformation ,Pyridoxal Phosphate ,Aspartate Aminotransferases ,Ligands ,Mathematics ,Protein Binding - Abstract
Frontal and zonal analysis of the chromatography of aspartate aminotransferase (EC2.61.1), pig heart cytosolic enzyme, on Bio-Gel P150 shows that holo- and apoenzyme can dissociate at pH 8.3. Ultracentrifugation and fluorescence depolarization confirm this result. Kinetic analysis of the fluorescence depolarization experiments favors a biphasic phenomenon: a few minutes for the faster one and several hours for the slower one. The apparent dissociation constant is 0.8 muM for the apoenzyme and 0.18 muM for the pyridoxal 5'-phosphate form of the holoenzyme. In the presence of sucrose or 0.1 M L-aspartate or a mixture of 70 mM L-glutamate and 2 mM alpha-ketoglutarate, the holoenzyme is dimeric at concentrations higher than 5 nM. The addition of a mixture of the substrates L-glutamate and alpha-ketoglutarate to a monomeric holoenzyme leads to dimerization. The stability of the dimeric form is in the order: holoenzyme + substrates greater than apoenzyme.
- Published
- 1975
166. [Pancreatic function test after perfusion stimulation with secretin-pancreozymin]
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E, Meroño García, M, Barba Bermejo, and C, Marina Fiol
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Pancreatic Neoplasms ,Pancreatitis ,Secretin ,Humans ,Cholecystokinin ,Pancreas ,Stimulation, Chemical - Published
- 1977
167. The evaluation of patient care through use of ANA's standards of nursing practice
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M, Barba, B, Bennett, and W J, Shaw
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American Nurses' Association ,Nursing Audit ,Nursing Care ,Hospitals ,Nursing Assessment ,Patient Care Planning ,United States ,Accreditation - Published
- 1978
168. Diagnostic immunopathology of the kidney biopsy in rheumatic diseases
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Lilly M. Barba, Jan R. Brentjens, Irene B. Pawlowski, and Giuseppe A. Andres
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Pathology ,medicine.medical_specialty ,Biopsy ,Kidney ,Pathology and Forensic Medicine ,Arthritis, Rheumatoid ,Mixed connective tissue disease ,immune system diseases ,Immunopathology ,Rheumatic Diseases ,medicine ,Animals ,Humans ,Immune Complex Diseases ,Lupus Erythematosus, Systemic ,skin and connective tissue diseases ,Mixed Connective Tissue Disease ,Systemic lupus erythematosus ,Nephritis ,Scleroderma, Systemic ,medicine.diagnostic_test ,business.industry ,Progressive systemic sclerosis ,medicine.disease ,medicine.anatomical_structure ,Sjogren's Syndrome ,Rheumatoid arthritis ,business - Abstract
Nephropathies found in systemic lupus erythematosus (SLE), progressive systemic sclerosis, rheumatoid arthritis, Sjogren's syndrome, and mixed connective tissue disease are discussed. Pathogenetic insights derived from the study of kidney tissue are highlighted and clinicopathologic correlations indicated. The question of whether to perform kidney biopsy in lupus patients is also addressed.
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- 1983
169. [Retained gastric antrum: diagnostic and therapeutic considerations]
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J F, Avilés, F, Domínguez, E, Meroño, V, Morales, C, Fernández, M, Barba, and D, Boixeda
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Adult ,Male ,Recurrence ,Biopsy ,Duodenal Ulcer ,Pyloric Antrum ,Humans ,Stomach Ulcer ,Gastroenterostomy - Published
- 1986
170. [Menetrier's disease. Current status. Presentation of a new case]
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D, Aguilera, J M, Milicua, J F, Gonzalez-Palacios, V F, Moreira, J M, Pascasio, M, Barba, and M, Diaz Gonzalez
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Adult ,Gastritis ,Humans ,Female ,Cimetidine ,Gastritis, Hypertrophic - Published
- 1983
171. Modeling and simulation of spacecraft solar array deployment
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Bong Wie, N. Furumoto, Peter M. Barba, and A. K. Banerjee
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Spacecraft ,business.industry ,Computer science ,Applied Mathematics ,Photovoltaic system ,Aerospace Engineering ,Synchronizing ,Kinematics ,Linkage (mechanical) ,law.invention ,Modeling and simulation ,Tree (data structure) ,Space and Planetary Science ,Control and Systems Engineering ,Software deployment ,law ,Physics::Space Physics ,Electrical and Electronic Engineering ,Aerospace engineering ,business - Abstract
This paper presents the dynamic and digital simulation of the deployment of rigid solar panels on INTELSAT-V and INS AT spacecraft. Each spacecraft is characterized by very distinct mechanisms for its solar array deployment. The arrays on INTELSAT-V are in a topological tree configuration, while the INSAT arrays are in a closed-loop configuration because of the four-bar linkage deployment mechanism. It is shown that the kinematic control rod on the INSAT has a synchronizing function very similar to that of the closed cable loop on the INTELSAT-V spacecraft. Practical aspects of the modeling and simulation of complex deployment mechanisms are emphasized. The use and limitations of the DISCOS multibody code for deployment dynamics simulations are discussed, and the need for developing specialized simulation tools emphasized.
- Published
- 1986
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172. [P-1133 (nialamide) as treatment of the leprous reaction]
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M, BARBA RUBIO and G, PEREZ SUAREZ
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Hydrazines ,Leprosy ,Nialamide - Published
- 1960
173. [Trigeminal Neuralgia]
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A, BACHS and J M, BARBA
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Humans ,Trigeminal Neuralgia - Published
- 1956
174. Thermal Study of a one-meter long Neon Cryogenic Pulsating Heat Pipe.
- Author
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M Barba, R Bruce, F Bouchet, A Bonelli, and B Baudouy
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- 2019
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175. La expedicion de D. Pedro de Cevallos en 1776-77
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Susan Migden Socolow, Juan Beverina, Alfredo G. Villegas, and Enrique M. Barba
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Cultural Studies ,History - Published
- 1980
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176. Quiroga y Rosas
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Joseph R. Barager and Enrique M. Barba
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Cultural Studies ,History - Published
- 1976
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177. Effect of lidocaine on the antibacterial activity of 7 antibiotics
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M. Barba
- Subjects
Lidocaine ,business.industry ,medicine.drug_class ,Antibiotics ,medicine ,Surgery ,Pharmacology ,business ,Antibacterial activity ,medicine.drug - Published
- 1975
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178. Reply by Authors to Y. Pironneau
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Thomas R. Kane and P. M. Barba
- Subjects
Physics ,Aerospace Engineering - Published
- 1967
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179. PREVALENCIA DE MALNUTRICIÓN PROTEICO-ENERGÉTICA EN PACIENTES SOCIO-SANITARIOS.
- Author
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A., Agustí, M., Barba, A., Nogue, N., García, J., Junyent, D., Quera, C., Sanz, R., Lucas, and A., Salva
- Abstract
Introducción: La malnutrición proteico-energética (MPE) es un síndrome geriátrico muy frecuente que varia entre un 15 y 60% dependiendo del nivel asistencial analizado. Un estado nutricional deficiente dará lugar a una mayor morbilidad y mortalidad en la persona anciana. Objetivos: Estudiar la prevalencia de la desnutrición proteico-energética en personas atendidas en diferentes centros Mutuam y Fundación Conviure. Material y métodos: Se ha realizado una valoración nutricional en las personas atendidas en los diferentes centros Mutuam y Fundación Conviure. La valoración incluye el estudio del nivel cognitivo mediante MMS y GDS Reisberg, situación funcional (Índice Barthel) valoración de riesgo de úlceras (escala Norton), existencia depresión (Yesavage), comorbilidad (índice Charlson), trastornos del comportamiento alimentario (Blandford) y el estado nutricional se valora mediante el MNA. Resultados: Se han valorado 688 pacientes de los cuales un 65% tenían edad superior a 80 años siendo la mayoría enfermos ingresados en régimen de Larga estancia, Convalecencia, Residencia Asistida y Centros de Día, existía un mayor deterioro funcional los pacientes de Larga Estancia y Paliativos, conservando mayor autonomía los de Residencias y Centros de Día. El peor deterioro cognitivo se observa en enfermos de Larga Estancia y Centros de Día. A nivel nutricional el MNA revelaba un riesgo de malnutrición en todos los centros (53,8%) excepto en centros de Día. La desnutrición establecida la encontramos en 17,7% de los pacientes y en número superior en enfermos paliativos 45% y en larga estancia 38,1%. Conclusiones: La malnutrición proteico-energética es muy frecuente en los centros de internamiento en especial en centros de larga estancia. La malnutrición se correlaciona con un mayor deterioro funcional y cognitivo. El MNA es un buen indicador de riesgo nutricional como método de screening y para adoptar medidas preventivas en casos de riesgo. [ABSTRACT FROM AUTHOR]
- Published
- 2007
180. Quiste epidérmico en la región plantar.
- Author
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M. J. M., Castro-Jonguitud, M. T., Sánchez-Tadeo, J. M., Barba-Gómez, and M. M., Hernández-Torres
- Abstract
The epidermal cyst, also called infundibular cyst, is a common benign skin tumor. This stems from the infundibular portion of the hair follicle, which rarely affects hairless areas such as the palms and soles. The etiology of epidermal cysts on palms and soles may be different from that caused by inflammation of the hair follicle. We report the case of a 30-year-old female patient with a lump in right plant, histology showed epidermal cyst. After surgical excision patient presented an adequate functional outcome without recurrence. [ABSTRACT FROM AUTHOR]
- Published
- 2016
181. Cluster of serogroup W invasive meningococcal disease in a university campus
- Author
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C Tillier, C Jestin, Muhamed-Kheir Taha, H Dupont, I Girard, M Zurbaran, S Tessier, Denise Antona, Daniel Lévy-Bruhl, Outbreak Control Team, F Clinard, C de Bort, Eva Hong, Ala-Eddine Deghmane, Anne-Sophie Barret, Santé publique France - French National Public Health Agency [Saint-Maurice, France], Santé publique France Bourgogne-Franche-Comté, Centre National de Référence des Méningocoques et Haemophilus influenzae - National Reference Center Meningococci and Haemophilus influenzae (CNR), Institut Pasteur [Paris], Agence régionale de santé (ARS) Bourgogne-Franche-Comté, Agence Régionale de la Santé (ARS), We would like to acknowledge the persons who contributed to the epidemiological investigation and the management of this alert at the regional health agency (M. Barba-Vasseur, A. Boulehais, G. Cassière), at the regional unit of the French national public health agency (M. Ciccardini, H. Savolle), at the French national public health agency (B. Coignard, D. Che, D. Heard, P. Bourrier, V. Derrey, A. Gallay, S. Quelet, M. Le Ray, E. Lahaie, D. Pognon), and at the regional hospital (P. Chavanet, A. Dautriche). We also acknowledge all members of the health reserve corps, the hospital staff, and the French armed forces medical service who participated in the vaccination campaign. We would like to thank the staff from the university and schools who contributed to the logistical organization of the campaign (especially MA. Rito who provided computer assistance). We would also like to thank S Bertrand from the Belgian National Reference Center for Neisseria meningitidis for providing WGS data on the third case and A. Terrade and M. Denizon from the French National Reference Center for meningococci for providing technical expertise. Finally, we would like to mention the continuous work from all persons who participate in the surveillance of invasive meningococcal disease in France in regional units (Cire) and at the French national public health agency (C. Campese, C. Maine, Y. Savitch)., and Institut Pasteur [Paris] (IP)
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,Universities ,Invasive meningococcal diseases ,Serogroup W meningococcus ,education ,Attack rate ,Decision Making ,Meningococcal Vaccines ,Neisseria meningitidis ,[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy ,Disease cluster ,Serogroup ,Disease Outbreaks ,03 medical and health sciences ,Young Adult ,[SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases ,Individual data ,Epidemiology ,medicine ,Humans ,Disease Notification ,Phylogeny ,0303 health sciences ,Virulence ,Méningocoque sérogroupe W ,030306 microbiology ,business.industry ,Immunization Programs ,Incidence ,Meningococcal vaccination ,[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology ,3. Good health ,University campus ,Vaccination ,Meningococcal Infections ,Infectious Diseases ,Disease Hotspot ,Infections invasives à méningocoque ,Invasive meningococcal disease ,Family medicine ,Vaccination méningocoque ,Mass vaccination ,Female ,France ,Épidémie ,business - Abstract
International audience; Introduction : In France, the expansion of an hypervirulent strain causing serogroup W invasive meningococcal disease (MenW) has been observed since 2015/16. We describe a cluster of three MenW cases, causing two deaths, at the end of 2016 in a university campus, and the vaccination campaign which was consequently organized.Methods : Epidemiological and microbiological analyses led a multidisciplinary expertise group to recommend the organization of a mass vaccination campaign using ACWY vaccine targeting more than 30,000 students and staff in the university campus. Individual data on vaccination was collected using the lists of students and staff registered at the university to estimate vaccine coverage.Results : Three MenW cases occurred within a 2-month period among students in different academic courses. All three isolates were identical and belonged to the “UK-2013 strain” phylogenetic branch. The attack rate was 10.8/100,000 students. The vaccination campaign was organized only 15 days after the third case occurred. In total, 13,198 persons were vaccinated. Vaccine coverage was estimated at 41% for students of the university and 35% for university staff.Conclusion : Timely notification of cases to health authorities was essential for the detection of the cluster and the rapid implementation of the vaccination campaign. No further cases occurred in the campus in the year following the vaccination campaign. This episode is the second cluster of MenW caused by the “UK-2013 strain” in a university since 2016.; Introduction : Une souche hypervirulente de méningocoque de sérogroupe W est en expansion en France depuis 2015/16. Cet article décrit un foyer de trois cas d’infection invasive à méningocoque de sérogroupe W (IIMW), à l’origine de deux décès, survenu à la fin de l’année 2016 dans une université, et la campagne de vaccination organisée par les autorités sanitaires.Méthodes : Les analyses épidémiologiques et microbiologiques ont conduit une cellule d’expertise multidisciplinaire à recommander l’organisation d’une campagne de vaccination par les vaccins ACWY ciblant plus de 30 000 étudiants et personnel sur le campus universitaire. Les données individuelles de vaccination ont été recueillies et rapportées aux listes d’étudiants et des personnels inscrits à l’université pour estimer la couverture vaccinale.Résultats : Les trois cas d’IIM W sont survenus dans un délai de 2 mois chez des étudiants dans des filières différentes. Les souches des trois cas étaient identiques (souche UK-2013). Le taux d’attaque était de 10,8/100 000 étudiants. Au total, 13 198 personnes ont été vaccinées. La couverture vaccinale à l’université a été estimée à 41 % pour les étudiants et 35 % pour le personnel.Conclusion : Le signalement réactif des cas a permis de détecter ces cas groupés et de mettre en œuvre rapidement la campagne de vaccination. Aucun nouveau cas d’IIM W n’est survenu dans le campus dans l’année qui a suivi la campagne de vaccination. Cet épisode constitue le deuxième foyer de cas groupés d’IIM W lié à la souche hypervirulente UK-2013 survenant en milieu étudiant depuis 2016.
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- 2018
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182. Fasting glucose and treatment outcome in breast and colorectal cancer patients treated with targeted agents: results from a historic cohort
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Patrizia Vici, D. Serpico, Anna Crispo, G. Caolo, Vincenzo Rosario Iaffaioli, Chiara Carlomagno, Claudio Botti, Barbara J. Fuhrman, G. Botti, G. Delle Fave, Saverio Stranges, Antonio Giordano, Gabriele Capurso, Francesca Sperati, Maddalena Barba, Maurizio Montella, S. De Placido, Irene Terrenato, M. Mottolese, Giuseppe D'Aiuto, Guglielmo Nasti, M., Barba, F., Sperati, S., Strange, Carlomagno, Chiara, G., Nasti, V., Iaffaioli, G., Caolo, M., Mottolese, G., Botti, I., Terrenato, P., Vici, Serpico, Danila, A., Giordano, G., D’Aiuto, A., Crispo, M., Montella, G., Capurso, G., Delle Fave, B., Fuhrman, C., Botti, and DE PLACIDO, Sabino
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Male ,Blood Glucose ,Oncology ,targeted agents ,Colorectal cancer ,Drug Resistance ,Cetuximab ,Adult ,Aged ,Antibodies, Monoclonal ,Antibodies, Monoclonal, Humanized ,Antineoplastic Agents ,Breast Neoplasms ,Colorectal Neoplasms ,Disease-Free Survival ,Drug Resistance, Neoplasm ,Fasting ,Female ,Humans ,Middle Aged ,Molecular Targeted Therapy ,Multivariate Analysis ,Proportional Hazards Models ,Retrospective Studies ,Treatment Outcome ,Tumor Markers, Biological ,Monoclonal ,Prospective cohort study ,Humanized ,Tumor Markers ,Hematology ,Bevacizumab ,Cohort ,medicine.drug ,medicine.medical_specialty ,colorectal cancer ,Antibodies ,breast cancer ,Breast cancer ,Internal medicine ,Biomarkers, Tumor ,medicine ,Proportional hazards model ,business.industry ,Cancer ,Retrospective cohort study ,Original Articles ,Trastuzumab ,Biological ,medicine.disease ,Surgery ,Neoplasm ,fasting glucose ,business - Abstract
Background: We investigated pretreatment fasting glucose as a predictor of patients’ important outcomes in breast and colorectal cancers undergoing targeted therapies. Patients and methods: In a historic cohort of 202 breast and 218 colorectal cancers treated with targeted agents from 1998 to 2009, we used the Kaplan–Meier method and the log-rank test to estimate survival through tertiles of fasting glucose and the Cox proportional hazards model for multivariate analysis stratified by primary site of cancer and including gender, age and body mass index. Results: The median follow-up was 20 months (1–128). At 60 months, 65% of patients in the lowest tertile of fasting glucose did not experiment disease progression compared with 34% in the highest tertile (P= 0.001). Seventy-six percent of females in the lowest tertile showed no progression compared with 49% in the top tertiles (P= 0.015). In multivariate analysis, fasting glucose was a significant predictor of time to disease progression only in breast cancer patients in the first tertile compared with the third (P= 0.017). Conclusions: We found evidence of a predictive role of pretreatment fasting glucose in the development of resistance in breast cancer patients treated with targeted agents. Prospective studies are warranted to confirm our findings.
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- 2012
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183. First detection of Tomato Ringspot Virus in pomegranate plants
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CALASSANZIO, MATTEO, BICCHERI, ROBERTA, LANZONI, CHIARA, POGGI POLLINI, CARLO, RATTI, CLAUDIO, Babini, A. R., D'Anniballe, A., Mirotti, A., M. Barba, G. Vannacci, G. Romanazzi, Calassanzio, M., Babini, A.R., Biccheri, R., D'Anniballe, A., Lanzoni, C., Mirotti, A., Poggi Pollini, C., and Ratti, C.
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food and beverages ,Punica granatum, ToRSV, ELISA, RT-PCR, phylogenetic analysis, phytosanitary measures - Abstract
Cuttings of Punica granatum for fruit production and ornamental usage have been introduced in accordance with EC directives in the Emilia-Romagna region from the USDA/ARS clonal germplasm repository (California) due to the increasing of pomegranate production all over the Italian territory. This planting material, before its delivering throughout the territory, was subjected to specific analysis in order to ensure a proper sanitary selection. Samples from symptomatic (yellowing, deformation or discoloration of leaves) and symptomless pomegranate trees were tested by ELISA assay using antibodies specific for several viruses affecting fruit crops. In many samples Tomato Ringspot Virus (ToRSV, EPPO A2 list) was detected and its infection confirmed by RT-PCR analysis. Biological characterization of the viral isolates was carried out. Buds were grafted into indicator peach rootstocks and sap from symptomatic tissues was mechanically inoculated onto herbaceous test plants on which typical symptoms of chlorotic ringspot, necrotic lesions, wilting and leaf curling were observed. Phylogenetic analysis revelead high sequence identity of RNA1 and RNA2 3'UTR regions of 4 pomegranate isolates. Official phytosanitary measures have been taken to eradicate the disease. All pomegranate plants of US origins have been uprooted and destroyed. These measures were aimed to avoid the ToRSV diffusion, with the intent to prevent the virus establishment in our territory where it would be harmful not only to pomegranates but also to other economically important fruit crops, as it is happening in USA
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- 2016
184. Progetto ARNADIA: definizione di protocolli nazionali di diagnosi per ‘Candidatus Phytoplasma mali’ e ‘Candidatus Phytoplasma prunorum’
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Pasquini G., Bertaccini A., Bianco P.A., Casati P., Costantini E., Ferretti L., Gentili A., Martini M., Marzachì C., Palmano S., Paltrinieri S., Barba M., Pasquini G., A. Bertaccini, P.A. Bianco, P. Casati, E. Costantini, L. Ferretti, A. Gentili, M. Martini, C. Marzachì, S. Palmano, S. Paltrinieri, and M. Barba
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Macrosteles quadripunctulatus ,'Candidatus Phytoplasma asteris' ,PCR ,Arabidopsis thaliana ,reference protocol ,Euscelidius variegatus ,ESFY ,AP ,rtPCR - Abstract
The importance of diagnostic procedures harmonization, the contribution to improved transparency during the detection of regulated pests and the need of the resolution of disputes among trading partners suggested, in the frame of the Italian Project ARNADIA financed by the Ministry of Agriculture, to set up validated diagnostic protocols, officially approved and published at national level. To select a reference protocol for ‘Candidatus Phytoplasma mali’ and ‘Candidatus Phytoplasma prunorum’ detection different diagnostic methods, protocols and reagents have been compared in five laboratories, using the same target and non-target reference samples. Methods of conventional and real time PCR have been selected and developed to determine the performance characteristics for the validation under the standard ISO 17025. The results show that the accuracy and sensitivity of conventional and real time PCR are comparable, whereas real time RT-PCR is recommendable to increase the analytical sensitivity. The reference protocols are available under www.strateco.it.
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- 2013
185. Prospettive future nella ricerca dei fitoplasmi
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Bianco, P. A., Alma, Alberto, Barba, M., Bertaccini, A., Conti, M., Osler, O., MARINA BARBA, Bianco P.A., A. Alma, M. Barba, A. Bertaccini, M. Conti, and R. Osler.
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- 2008
186. Studi epidemiologici sul giallume europeo delle drupacee (ESFY) in impianti peschicoli del veronese
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Mori, Nicola, Giunchedi, L, Panato, D, Pignatta, D, POGGI POLLINI, C, Visigalli, T., M. BARBA E P.A. BIANCO, N.Mori, L. Giunchedi, D. Panato, D. Pignatta, C. Poggi Pollini, and T. Visigalli
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CACOPSYLLA PRUNI ,GIALLUME EUROPEO DELLE DRUPACEE ,EPIDEMIOLOGIA - Abstract
Vengono riportati i risultati di indagini effettuati nel decennio 1995-2004 per il monitoraggio di ESFY in numerosi pescheti della provincia di Verona, nonchè sulla presenza di psillidi infetti dal patogeno e sulla presenza di piante spontanee, possibili serbatoio d'inoculo per ESFYP nelle stesse aree. E' stato verificato un progressivo incremento della malattia (2% medio di nuove infezioni ogni anno), la presenza di piante spontanee di prugnolo e mirabolano infette e di numerosi individui di Cacopsylla pruni infetti da ESFYP.
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- 2005
187. Ensembl 2025.
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Dyer SC, Austine-Orimoloye O, Azov AG, Barba M, Barnes I, Barrera-Enriquez VP, Becker A, Bennett R, Beracochea M, Berry A, Bhai J, Bhurji SK, Boddu S, Branco Lins PR, Brooks L, Ramaraju SB, Campbell LI, Martinez MC, Charkhchi M, Cortes LA, Davidson C, Denni S, Dodiya K, Donaldson S, El Houdaigui B, El Naboulsi T, Falola O, Fatima R, Genez T, Martinez JG, Gurbich T, Hardy M, Hollis Z, Hunt T, Kay M, Kaykala V, Lemos D, Lodha D, Mathlouthi N, Merino GA, Merritt R, Mirabueno LP, Mushtaq A, Hossain SN, Pérez-Silva JG, Perry M, Piližota I, Poppleton D, Prosovetskaia I, Raj S, Salam AIA, Saraf S, Saraiva-Agostinho N, Sinha S, Sipos B, Sitnik V, Steed E, Suner MM, Surapaneni L, Sutinen K, Tricomi FF, Tsang I, Urbina-Gómez D, Veidenberg A, Walsh TA, Willhoft NL, Allen J, Alvarez-Jarreta J, Chakiachvili M, Cheema J, da Rocha JB, De Silva NH, Giorgetti S, Haggerty L, Ilsley GR, Keatley J, Loveland JE, Moore B, Mudge JM, Naamati G, Tate J, Trevanion SJ, Winterbottom A, Flint B, Frankish A, Hunt SE, Finn RD, Freeberg MA, Harrison PW, Martin FJ, and Yates AD
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- Humans, Animals, Mice, Molecular Sequence Annotation, Software, Genome genetics, Internet, Genomics, Databases, Genetic
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Ensembl (www.ensembl.org) is an open platform integrating publicly available genomics data across the tree of life with a focus on eukaryotic species related to human health, agriculture and biodiversity. This year has seen a continued expansion in the number of species represented, with >4800 eukaryotic and >31 300 prokaryotic genomes available. The new Ensembl site, currently in beta, has continued to develop, currently holding >2700 eukaryotic genome assemblies. The new site provides genome, gene, transcript, homology and variation views, and will replace the current Rapid Release site; this represents a key step towards provision of a single integrated Ensembl site. Additional activities have included developing improved regulatory annotation for human, mouse and agricultural species, and expanding the Ensembl Variant Effect Predictor tool. To learn more about Ensembl, help and documentation are available along with an extensive training program that can be accessed via our training pages., (© The Author(s) 2024. Published by Oxford University Press on behalf of Nucleic Acids Research.)
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- 2025
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188. National Survey on the Management of Genital Prolapse in Italy.
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Frigerio M, Morciano A, Barba M, Schiavi MC, Cola A, Cavaliere E, Rappa C, and Cervigni M
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Purpose: Surgical repair is considered the mainstay of genital prolapse management. Several procedures are available both by vaginal and abdominal route, with and without mesh augmentation. The Italian UroGynecology Association (AIUG) promoted this survey with the aim of evaluating current variations in the surgical management of various types of prolapse in different clinical settings and to compare practice amongst practitioners working in high- and medium/low-volume centers., Participants and Methods: The questionnaire examined four contentious areas of contemporary prolapse management. The questionnaire was emailed to the AIUG gynecologist members in Italy in 2023., Results: A total of 104 complete responses were received, resulting in a 6.9% response rate. Native-tissue repair represents the preferred option in most scenarios and was proposed by 76%, 68.3%, 94.2%, and 52.9% of practitioners in the case of primary anterior, uterovaginal, posterior, and vault prolapse respectively. The use of vaginal mesh in these scenarios is very limited. Native tissue repairs in case of recurrent anterior, posterior, or apical recurrent prolapse would be performed only by 37.5%, 47.1%, and 28% of surgeons respectively. In these cases, the use of mesh - by vaginal and abdominal route - increased significantly., Conclusion: This survey showed that in Italy surgical management of genital prolapse is very heterogeneous. Native-tissue repair remains the preferred option, but practitioners tend to lose confidence in mesh-free procedures in case of prolapse recurrence. Despite mesh kits recalls and recommendations, the use of transvaginal implants is still considered an option for prolapse repair., Competing Interests: The author(s) report no conflicts of interest in this work., (© 2024 Frigerio et al.)
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- 2024
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189. Tolerability and Preliminary Outcomes of Adjuvant T-DM1 in HER2-Positive Breast Cancer After Neoadjuvant Therapy: The ATD Study.
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Krasniqi E, Filomeno L, Arcuri T, Di Lisa FS, Astone A, Cutigni C, Foglietta J, Nunzi M, Rossi R, Minelli M, Meattini I, Visani L, Scialino J, Livi L, Moscetti L, Marchetti P, Botticelli A, Paris I, Pavese F, D'Angelo T, Sini V, Stani S, Valerio MR, Grassadonia A, Tinari N, Mazzotta M, Vergati M, D'Auria G, Gamucci T, D'Onofrio L, Gasparro S, Roselli A, Fulvi A, Ferretti G, Torchia A, Giordano M, Greco F, Pantano F, Tonini G, Fabbri A, Bria E, Garufi G, Fiorio E, Raffaele M, Pistelli M, Berardi R, Saltarelli R, Kayal R, Ferranti FR, Cannita K, Irelli A, D'Ostilio N, De Rossi C, Palumbo R, Cariello A, Sanguineti G, Calabrò F, Pizzuti L, Barba M, Botti C, Pelle F, Cappelli S, Cavicchi F, Puccica I, Villanucci A, Sperduti I, Ciliberto G, and Vici P
- Abstract
Background/objectives: HER2-positive breast cancer (HER2
+ BC) is an aggressive subtype, with neoadjuvant treatment (NAT) aiming to achieve a pathological complete response (pCR) to improve long-term outcomes. Trastuzumab emtansine (T-DM1) has been established as the standard of care in the adjuvant setting for HER2+ BC patients who do not obtain pCR. The ATD study aimed to evaluate the real-world tolerability of T-DM1 in this setting. The secondary objective was to assess the effectiveness., Methods: This was a multicenter, retrospective study across 24 Italian oncology centers, including 410 patients with HER2+ BC treated with adjuvant T-DM1 following a lack of pCR after NAT. Patient characteristics, NAT regimens, and surgical outcomes were recorded. Tolerability was assessed by documenting adverse events (AEs) according to the CTCAE (v5.0). Preliminary effectiveness was evaluated in terms of relapse-free survival (RFS) and overall survival (OS)., Results: Overall, 228 patients (55.6%) experienced at least one AE related to T-DM1, with 4.9% experiencing grade 3 or higher AEs. The most common AEs were hepatotoxicity (18.5%) and thrombocytopenia (17.6%). T-DM1 was discontinued in 10.0% of patients due to toxicity. After a median follow-up of 25 months, 31 relapse events (7.6%) and 22 deaths (5.4%) were reported. The preliminary incidence of RFS and OS events was similar between patients who completed the T-DM1 course and those who discontinued it early., Conclusions: T-DM1 demonstrated a manageable safety profile, and the adverse events were consistent with those reported in randomized trials. The data are not yet sufficient to allow for a formal analysis of RFS and OS, and long-term follow-up is required.- Published
- 2024
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190. Validated questionnaires for the assessment of Italian patients with pelvic floor dysfunctions: a systematic review.
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Braga A, Vigna A, Barba M, Caccia G, Papadia A, Campitiello MR, Serati M, and Frigerio M
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Background: Pelvic floor dysfunctions (PFDs) have a complex, multifactorial pathophysiology that impacts women's health and must be identified to provide the most appropriate care and treatment. Therefore, symptom and quality of life (QoL) questionnaires, briefly identified as patient-reported outcomes (PROs), have been developed. Despite the large number of questionnaires available for the assessment of PFDs and QoL-related issues in English, few of them have been validated for the Italian language., Objectives: The aim of this article is to systematically review the literature on Italian-language validated PROs for PFDs assessment, along with practical information on literature references and suggestions on how to obtain each individual questionnaire., Methods: A systematic review according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement was performed up to 1 March 2024. PubMed/MEDLINE databases and websites were used to identify validated questionnaires in Italian language for PFDs. Once identified, the possibility of obtaining a copy of the questionnaire was checked, and the steps to obtain one are given in the text., Outcome: Thirty-five Italian-validated questionnaires were included: 17 out of 35 (48.6%) questionnaires focused on Lower urinary tract symptoms, 1 (2.8%) on genital prolapse symptoms, 8 (22.8%) on sexuality, 3 (8.6%) on bowel symptoms and 6 (17.2%) on pelvic dysfunctions. The literature search turned up seven more Italian PRO validation papers than the previous review. Specifically, the newly validated PROs include: Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-12), Sexual Desire and Erotic Fantasies (SDEF) Questionnaire, Sexual Inhibition/Sexual Excitation Scales (SIS/SES), 12-Item Sexual Distress Scale (SDS) and 5-Item Sexual Distress Scale-Short Form (SDS-SF), Vaizey and Wexner and fecal incontinence severity index (FISI) questionnaires, Pelvic Floor Distress Inventory (PFDI-20) questionnaire, Intermittent Catheterization Acceptance Test (I-CAT)., Conclusions and Outlook: This systematic review is intended to be a tool to promote the adoption of appropriate PROs when studying PFDs in Italian patients., (S. Karger AG, Basel.)
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- 2024
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191. eIF5A controls mitoprotein import by relieving ribosome stalling at TIM50 translocase mRNA.
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Barba-Aliaga M, Bernal V, Rong C, Volfbeyn ME, Zhang K, Zid BM, and Alepuz P
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- Mitochondrial Precursor Protein Import Complex Proteins, Protein Biosynthesis, Mitochondrial Membrane Transport Proteins metabolism, Mitochondrial Membrane Transport Proteins genetics, Oxidative Phosphorylation, Eukaryotic Translation Initiation Factor 5A, Peptide Initiation Factors metabolism, Peptide Initiation Factors genetics, Saccharomyces cerevisiae metabolism, Saccharomyces cerevisiae genetics, RNA-Binding Proteins metabolism, RNA-Binding Proteins genetics, Ribosomes metabolism, Ribosomes genetics, Saccharomyces cerevisiae Proteins metabolism, Saccharomyces cerevisiae Proteins genetics, RNA, Messenger metabolism, RNA, Messenger genetics, Protein Transport, Mitochondria metabolism, Mitochondria genetics
- Abstract
Efficient import of nuclear-encoded proteins into mitochondria is crucial for proper mitochondrial function. The conserved translation factor eIF5A binds ribosomes, alleviating stalling at polyproline-encoding sequences. eIF5A impacts mitochondrial function across species, though the precise molecular mechanism is unclear. We found that eIF5A depletion in yeast reduces the translation and levels of the TCA cycle and oxidative phosphorylation proteins. Loss of eIF5A causes mitoprotein precursors to accumulate in the cytosol and triggers a mitochondrial import stress response. We identify an essential polyproline protein as a direct target of eIF5A: the mitochondrial inner membrane protein and translocase component Tim50. Thus, eIF5A controls mitochondrial protein import by alleviating ribosome stalling along Tim50 mRNA at the mitochondrial surface. Removal of polyprolines from Tim50 partially rescues the mitochondrial import stress response and translation of oxidative phosphorylation genes. Overall, our findings elucidate how eIF5A impacts the mitochondrial function by promoting efficient translation and reducing ribosome stalling of co-translationally imported proteins, thereby positively impacting the mitochondrial import process., (© 2024 Barba-Aliaga et al.)
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- 2024
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192. Toxicity risk from hip implant CoCrMo particles: The impact of dynamic flow rate on neuronal cells in microfluidic systems.
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Jeffers M, Kanniyappan H, Cheng KY, Prithweeraj S, Perumal G, Barba M, Lin Y, and Mathew MT
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- Cell Line, Tumor, Mice, Animals, Lab-On-A-Chip Devices, Microfluidic Analytical Techniques instrumentation, Reactive Oxygen Species metabolism, Humans, Cobalt toxicity, Cell Survival drug effects, Neurons drug effects, Hip Prosthesis
- Abstract
In patients with total hip replacements (THRs), wear products in the form of nanoparticles and ions are released, especially around implant failure. In this study, we use N2a cells, a neuroblastoma cell line, to evaluate the effects of different flow rates on neuronal toxicity amidst exposure to CoCrMo particles. We hypothesized that increasing flow rates would increase N2a cell viability and decrease N2a cell-degradation products (DPs) toxicity. We conducted four 24-hour experiments, each with four flow rate conditions, 0, 50, 100, and 200 μL/min, based on the physiological shear stress of the vessels in the human body, to evaluate cell viability, cell morphology, and cell-DPs interaction. Steps included microfluidic channel preparation, N2a cell culturing, CoCrMo particle acquisition, microfluidic system assembly, and dynamic flow neurotoxicity evaluation, which included video microscopy, AlamarBlue, live/dead imaging, DAPI, and ROS assay. The results suggest that fewer neurotoxic reactions and greater viability at higher flow rates supported our hypothesis, although the full range of viable flow rates is yet to be studied. While cell-particle interaction is complex and dynamic, flow rate did modulate toxicity, viability, morphology, and growth environment. The microfluidic system should continue to be developed to study toxicology aspects of implants by simulating in vivo conditions more accurately., 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 Elsevier B.V. All rights reserved.)
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- 2024
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193. Italian validation of the pelvic floor Impact questionnaire - 7 (PFIQ-7).
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Volontè S, Zurlo A, Cola A, Barba M, and Frigerio M
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Introduction and Hypothesis: This study aims to translate and validate the Pelvic Floor Impact Questionnaire - short form 7 (PFIQ-7) in Italian, assessing its validity, internal consistency, and test-retest reliability., Methods: The final version of the questionnaire was submitted to women referred to urogynecological outpatient care for genital prolapse or urinary incontinence and who either reported sexual disorders (controls) or not (cases). The questionnaire was translated into Italian using established procedural stages. Two weeks later, cases got the questionnaire for the test-retest evaluation. The non-parametric Wilcoxon test was employed to evaluate the variations between the case and control groups. Convergent validity was tested using the Italian version of the PFDI-20. The internal consistency was measured using Cronbach's Alpha. Using Cohen's kappa, the degree of concordance/agreement was determined. The test-retest results for different individuals were evaluated for absolute agreement using the intraclass correlation coefficient (ICC)., Results: The study then included 45 women with a mean age of 38.0 ± 11.7 years who answered the questionnaire with no dropouts or missing items. Participants were categorized into cases and controls based on their self-reported symptoms. The questionnaire demonstrated significant construct validity by effectively distinguishing between symptomatic and asymptomatic individuals. Convergent validity testing with the PFDI-20 showed a strong linear correlation (F < 0.001) between scores. Internal consistency was excellent, with Cronbach's Alpha values ranging from 0.90 to 0.93. Test-retest reliability was confirmed, with Cohen's Kappa values ranging from 0.62 to 0.92 and intraclass correlation coefficients from 0.88 to 0.94, indicating high reliability., Conclusion: The Italian version of the PFIQ-7 is reliable, valid, and consistent., 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. Published by Elsevier B.V.)
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- 2024
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194. The Evil Twins of Chronic Pelvic Pain Syndrome: A Systematic Review and Meta-Analysis on Interstitial Cystitis/Painful Bladder Syndrome and Endometriosis.
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Inzoli A, Barba M, Costa C, Carazita V, Cola A, Fantauzzi M, Passoni P, Polizzi S, and Frigerio M
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Background: Chronic pelvic pain is a debilitating condition affecting quality of life. Endometriosis is one of the leading causes of CPP, but recent studies highlighted the role of interstitial cystitis/bladder pain syndrome (IC/PBS) in causing CPP. Only some studies addressed the coexistence of these two conditions, which seems more frequent than what is supposed, leading to diagnostic delays and unnecessary surgeries. This systematic review aimed to evaluate the estimate of the prevalence of the comorbidity of endometriosis and IC/PBS., Methods: We performed a systematic review of the literature indexed on PubMed, Scopus, ISI Web of Science, and Cochrane using a combination of keywords and text words represented by "painful bladder syndrome", "endometriosis", "interstitial cystitis", and "bladder pain syndrome". We performed a meta-analysis of the results., Results: The meta-analysis shows that the coexistence of endometriosis and IC/PBS in women with CPP ranged from 15.5% to 78.3%, which is higher than the prevalence of IC/PBS in the general population., Conclusions: Prevalence data about the coexistence of endometriosis and IC/PBS are highly heterogeneous, probably due to the paucity of available data. However, in cases of endometriosis unresponsive to treatment, other reasons for CPP (such as IC/PBS) need to be ruled out.
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- 2024
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195. MYC upstream region orchestrates resistance to PI3K inhibitors in cancer cells through FOXO3a-mediated autophagic adaptation.
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Bordone R, Ivy DM, D'Amico R, Barba M, Gaggianesi M, Di Pastena F, Cesaro B, Bufalieri F, Balzerano A, De Smaele E, Giannini G, Di Marcotullio L, Fatica A, Stassi G, Di Magno L, Coni S, and Canettieri G
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- Humans, Animals, Mice, Cell Line, Tumor, Burkitt Lymphoma genetics, Burkitt Lymphoma pathology, Burkitt Lymphoma drug therapy, Burkitt Lymphoma metabolism, Gene Expression Regulation, Neoplastic drug effects, Forkhead Box Protein O3 metabolism, Forkhead Box Protein O3 genetics, Autophagy drug effects, Autophagy genetics, Drug Resistance, Neoplasm genetics, Proto-Oncogene Proteins c-myc metabolism, Proto-Oncogene Proteins c-myc genetics, Phosphoinositide-3 Kinase Inhibitors pharmacology, Colorectal Neoplasms genetics, Colorectal Neoplasms pathology, Colorectal Neoplasms drug therapy, Colorectal Neoplasms metabolism
- Abstract
The MYC oncogene is frequently overexpressed in tumors and inhibition of its translation is considered an attractive therapeutic opportunity. Despite numerous reports proposing an internal ribosome entry site (IRES) within the MYC Upstream Region (MYC UR) to sustain MYC translation during cellular stress or chemotherapy, conflicting evidence remains regarding the validity of such a mechanism. Through comprehensive investigations in MYC-driven Colorectal Cancer (CRC) and Burkitt Lymphoma (BL) cells, we demonstrate that MYC UR does not facilitate cap-independent translation, but instead orchestrates resistance to PI3K inhibitors. Genomic deletion of MYC UR neither impacts MYC protein levels nor viability in CRC cells, either untreated or exposed to cellular stress. However, in response to PI3K inhibitors, MYC UR drives a FOXO3a-dependent transcriptional upregulation of MYC, conferring drug resistance. This resistance is mediated by enhanced autophagic flux, governed by MYC, and blockade of autophagy sensitizes CRC cells to PI3K inhibition in vitro and in vivo. Remarkably, BL cells lacking the translocation of MYC UR exhibit sensitivity to PI3K inhibitors, whereas MYC UR-translocated cells respond to these drugs only when autophagy is inhibited. These findings challenge previous notions regarding IRES-mediated translation and highlight a promising strategy to overcome resistance to PI3K inhibitors in MYC-driven malignancies, offering potential clinical implications for CRC and BL treatment. In response to BKM120, the upstream region of MYC (UR) enhances MYC expression, via FOXO3a, leading to increased autophagic flux and resistance to PI3K inhibitors (left). Pharmacological blockade of autophagy (center) or lack of translocated MYC UR along with MYC CDS in BL (right) overcome resistance and induces cells death. Image created in BioRender., Competing Interests: Competing interests The authors declare no competing interests. Ethics approval and consent to participate All methods involving human derived materials and animal subjects were performed in accordance with the relevant local regulation and guidelines. All mouse experiments were performed according to the European Community Council Directive 2010/63/EU and carried out under the approval of the Institutional Animal Care Committee and Ministry of Health (protocol n. C1368.26). Patient-derived colorectal cancer stem cells were obtained in accordance with the ethical standards regarding Human Experimentation and informed consent was obtained from each patient in this study under Institutional Review Board protocols (authorization CE9/2015, Policlinico Paolo Giaccone, Palermo, Italy)., (© 2024. The Author(s), under exclusive licence to Springer Nature Limited.)
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- 2024
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196. Outcomes of uterosacral ligaments suspension for uterovaginal prolapse native-tissue repair: Over 1000-patient single-center study.
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Barba M, Cola A, Costa C, De Vicari D, Amatucci N, Melocchi T, and Frigerio M
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- Humans, Female, Middle Aged, Retrospective Studies, Aged, Gynecologic Surgical Procedures methods, Gynecologic Surgical Procedures adverse effects, Treatment Outcome, Pelvic Organ Prolapse surgery, Postoperative Complications etiology, Postoperative Complications epidemiology, Hysterectomy, Vaginal methods, Hysterectomy, Vaginal adverse effects, Adult, Ligaments surgery, Uterine Prolapse surgery
- Abstract
Introduction and Hypothesis: Surgical repair is the mainstay of genital prolapse management. Among native-tissue apical procedures, high uterosacral ligaments suspension is considered a valid and effective option for central compartment repair. In this study, we aimed to evaluate the effectiveness, complications rate, and functional results of high USL suspension as a primary prolapse repair technique in a large cohort of patients., Methods: Patients who underwent vaginal hysterectomy followed by high uterosacral ligaments suspension for POP between January 2008 and December 2020 were retrospectively analyzed. Questionnaires and clinical interviews were preoperatively performed to assess symptoms and severity of urinary, bowel, and sexual dysfunctions. After surgical procedure, diagnostic cystoscopy was performed to evaluate ureteral patency. Postoperative data, objective, and subjective cure rate were then noted at the follow-up evaluation., Results: A total of 1099 patients underwent high uterosacral ligaments suspension. The total complication rate was 3.4 % and recurrence in any of the vaginal compartments was 12.4 %. Reoperation for symptomatic prolapse recurrence or pessary treatment was required in 9 women (0.9 %). In the evaluation of postoperative questionnaires, functional outcomes analysis revealed a significant improvement (p < 0.05) in terms of stress urinary incontinence, urge urinary incontinence, voiding symptoms, constipation, and dyspareunia after prolapse repair., Conclusion: Uterosacral ligament suspension is a safe and effective procedure for primary surgical treatment of pelvic organ prolapse. Anatomical, functional, and subjective outcomes were very satisfactory, and the reoperation rate for recurrence was below 1%., 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 Author(s). Published by Elsevier B.V. All rights reserved.)
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- 2024
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197. Enhanced recovery after surgery (ERAS) in prolapse repair: A prospective study on pre-emptive uterosacral/cervical block.
- Author
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Barba M, Cola A, De Vicari D, Melocchi T, Gili MA, and Frigerio M
- Subjects
- Humans, Female, Prospective Studies, Middle Aged, Pilot Projects, Aged, Hysterectomy, Vaginal methods, Anesthetics, Local administration & dosage, Pain Measurement, Amides administration & dosage, Pelvic Organ Prolapse surgery, Uterine Prolapse surgery, Pain, Postoperative prevention & control, Pain, Postoperative drug therapy, Clonidine administration & dosage, Clonidine therapeutic use, Ropivacaine administration & dosage, Enhanced Recovery After Surgery, Nerve Block methods
- Abstract
Objective: Enhanced recovery after surgery (ERAS) protocols have been introduced in gynecology. Postoperative pain management after vaginal procedures remains a relevant issue. In the present study we aimed to evaluate the effectiveness of pre-emptive uterosacral/cervical block (PUCB) for postoperative pain control in patients with uterovaginal prolapse undergoing vaginal hysterectomy and pelvic floor repair. We also evaluated the impact on the length of recovery., Methods: This was a pilot study analyzing 40 women who underwent pelvic organ prolapse repair through uterosacral ligament suspension. Patients who chose to undergo PUCB were considered as cases, otherwise as controls. After general or spinal anesthesia induction, the treatment group received the PUCB with ropivacaine plus clonidine injections at 2, 4, 8, and 10 o'clock of the cervix. The control group did not receive additional treatment. Pain intensity was measured at rest and after forceful cough at 1, 4, 8, 12, 24, and 48 h postoperatively., Results: We found a significant reduction in pain values at 1 h (rest and forceful cough) and 24 h (forceful cough) in the PUCB group. The incidence of moderate/severe pain was inferior in the PUCB group at 1 h (rest) and 24 h (rest and forceful cough). There were no differences in terms of the use of rescue opioids (0% vs. 5%; P = 0.311) and length of hospital stay (2.5 ± 0.6 vs. 2.3 ± 0.6; P = 0.180)., Conclusions: For the first time, we demonstrated the impact of pre-emptive uterosacral/cervical block on pain control up to 24 h after surgery. Clonidine as a sensory blockade extender appears promising in enhancing the efficacy of local anesthetics., (© 2024 International Federation of Gynecology and Obstetrics.)
- Published
- 2024
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198. Long-Term Outcomes (10 Years) of Sacrospinous Ligament Fixation for Pelvic Organ Prolapse Repair.
- Author
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Vigna A, Barba M, and Frigerio M
- Abstract
Vaginal vault prolapse is one of the main reasons for reoperation in patients with pelvic organ prolapse. Effective correction of the vaginal apex is essential for lasting repair for these women. Apical suspension of the sacrospinous ligament is probably one of the main vaginal treatments still offered to patients today. We proposed an evaluation of the functional and anatomical results of long-term sacrospinous ligament fixation., Objective: The purpose of this study was to evaluate the 10-year results of sacrospinous ligament suspension as primary repair for apical prolapse and to evaluate long-term side effects., Materials and Methods: A retrospective study analyzed 10-year follow-up after prolapse repair using sacrospinous ligament suspension. A subjective recurrence was identified as the postoperative occurrence of swelling symptoms based on a particular item on the Italian Prolapse Quality of Life (P-QoL) questionnaire. An objective recurrence was defined as a postoperative decline to stage II or below in any compartment based on the POP-Q system or the requirement for additional surgery. The assessment of postoperative subjective satisfaction was conducted using the Patient Global Impression of Improvement (PGI-I) score., Results: In total, 40 patients underwent sacrospinous ligament fixation. Objective recurrence was remarkably high, as it was observed in 17 (56.7%) patients. Subjective recurrence was reported by ten (33.3%) women, and reintervention occurred in two (6.7%) of patients. From the point of view of quality of life, according to the PGI-I, twenty-three (76.7%) patients described some degree of improvement after surgery, four (13.3%) described their status as unmodified, and three (10%) reported some form of worsening after primary treatment., Conclusions: Transvaginal repair with sacrospinous fixation is a long-lasting option for prolapse repair, with improvement in every POP-q parameter. Some degree of anterior recurrence, recurrence of symptoms with swelling, or an overall worsening of quality of life after surgery is possible.
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- 2024
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199. Breast and cervical cancer in transgender men: literature review and a case report.
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Di Lisa FS, Villa A, Filomeno L, Arcuri T, Chiofalo B, Sanguineti G, Pizzuti L, Krasniqi E, Barba M, Sergi D, Lombardo F, Romanelli F, Botti C, Zoccali G, Ciliberto G, and Vici P
- Abstract
Transgender individuals exhibit a higher prevalence of cancer-related risk factors, such as substance abuse and sexually transmitted infections. These factors, coupled with suboptimal adherence to cancer screening recommendations, may lead to a higher incidence of cancers, such as breast and cervical cancer, and contribute to delayed diagnoses in transgender patients. Herein, we report a unique case of a transgender man with a history of alcohol and drug abuse, undergoing gender-affirming exogenous testosterone therapy, who developed synchronous locally advanced breast cancer and human papilloma virus (HPV)-related cervical cancer. He underwent concurrent chemoradiation for cervical cancer and surgery followed by endocrine therapy for breast cancer. The treatments were suboptimals due to patient's comorbidities, among them liver cirrhosis leading to an early death. Additionally, we have conducted a review of existing literature, including case reports, clinical studies, and review articles investigating the role of potential risk factors specifically related to breast and cervical tumors in transgender men. Gender-affirming testosterone therapy is common among transgender men to induce gender affirmation, but its link to breast cancer risk remains ambiguous, with studies being limited and sometimes contradictory. Conversely, HPV is a well-established cause of up to 99% of cervical cancers. Despite persistent risk for cervical cancer in transgender men who retain their cervix, several studies indicate notable disparities in screening adherence, due to personal and structural barriers. Moreover, alcohol and drug use disorders, commonly encountered in transgender population, may negatively influence the adherence to screening programs. Current cancer screening guidelines for this population are somewhat unclear, and specific programs based on more robust data are urgently required along with further tailored studies., Competing Interests: FSDL: Novartis, Gentili, Pfizer, Daiichi-Sankyo and Ipsen, outside the submitted manuscript. LF: Gilead, Daiichi-Sankyo, Gentili and Eisai, outside the submitted manuscript. LP: Pfizer and Novartis, outside the submitted manuscript. DS: MSD, outside the submitted work. PV: Pfizer, Novartis, Eisai, Daiichi Sankyo, Ipsen and Eli Lilly, outside the submitted work. AV, TA, BC, GS, EK, MB, FL, FR, CB, and GC declare no competing interests., (© The Author(s), 2024.)
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- 2024
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200. DNA Damage Response in Early Breast Cancer: A Phase III Cohort in the Phobos Study.
- Author
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Krasniqi E, Ercolani C, Di Benedetto A, Di Lisa FS, Filomeno L, Arcuri T, Botti C, Pelle F, Cavicchi F, Cappelli S, Barba M, Pizzuti L, Maugeri-Saccà M, Moscetti L, Grassadonia A, Tinari N, Sanguineti G, Takanen S, Fragnito D, Terrenato I, Buglioni S, Perracchio L, Latorre A, De Maria R, Pallocca M, Ciliberto G, Giotta F, and Vici P
- Abstract
We assessed the impact of DNA damage response and repair (DDR) biomarker expressions in 222 node-positive early breast cancer (BC) patients from a previous Phase III GOIM 9902 trial of adjuvant taxanes. At a median follow-up of 64 months, the original study showed no disease-free survival (DFS) or overall survival (OS) differences with the addition of docetaxel (D) to epirubicine-cyclophosphamide (EC). Immunohistochemistry was employed to assess the expression of DDR phosphoproteins (pATM, pATR, pCHK1, γH2AX, pRPA32, and pWEE1) in tumor tissue, and their association with clinical outcomes was evaluated through the Cox elastic net model. Over an extended follow-up of 234 months, we confirmed no significant differences in DFS or OS between patients treated with EC and those receiving D → EC. A DDR risk score, inversely driven by ATM and ATR expression, emerged as an independent prognostic factor for both DFS (HR = 0.41, p < 0.0001) and OS (HR = 0.61, p = 0.046). Further validation in a public adjuvant BC cohort was possible only for ATM, confirming its protective role. Overall, our findings confirm the potential role of the DDR pathway in BC prognostication and in shaping treatment strategies advocating for an integrated approach, combining molecular markers with clinical-pathological factors.
- Published
- 2024
- Full Text
- View/download PDF
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