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Amine Z, Cedric B, William B, Tae-Hee C, Benoit G, Sébastien R, Gaultier M, Caroline A, Bertrand L, David WL. Tenecteplase versus Alteplase before thrombectomy: A comprehensive evaluation of clinical and angiographic impact: Insights from the ETIS registry. J Neuroradiol 2024:S0150-9861(24)00110-X. [PMID: 38462131 DOI: 10.1016/j.neurad.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/12/2024]
Abstract
INTRODUCTION Data on prior use of Tenecteplase versus Alteplase in acute stroke management by mechanical thrombectomy are controversial. Our primary objective was to make a comprehensive comparative assessment of clinical and angiographic efficacy and safety outcomes in a large prospective observational study. METHODS We included stroke patients who were eligible for intravenous thrombolysis and endovascular thrombectomy between 2019 and 2021, from an ongoing registry in twenty comprehensive stroke centers in France. We divided patients into two groups based on the thrombolytic agent used (Alteplase vs Tenecteplase). We then compared their treatment times, and their angiographic (TICI scale), clinical (mRS at three months and sICH) and safety outcomes after controlling for potential confounders using propensity score methods. RESULTS We evaluated 1131 patients having undergone thrombectomy for the final analysis, 250 received Tenecteplase and 881 Alteplase. Both groups were of the same median age (75 vs 74 respectively), and had the same baseline NIHSS score (16) and ASPECTS (8). There was no significant difference for First Pass Effect (OR 0.93, 95 % CI 0.76-1.14, p = 0.75), time required for reperfusion (OR 0.03, 95 % CI 0.09-0.16, p = 0.49), or for final reperfusion status. Clinically, functional independence at 90 days was similar in both groups (OR 0.82, 95 % CI 0.61-1.10, p = 0.18) with the same risk of sICH (OR 1.36, 95 % CI 0.77-2.41, p = 0.28). However, Tenecteplase patients had shorter imaging-to-groin puncture times (99 vs 142 min, p < 0.05). CONCLUSIONS Tenecteplase showed no better clinical or angiographic impact on thrombectomy compared to Alteplase. Nevertheless, it appeared associated with a shorter thrombolysis-to-groin puncture time.
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Affiliation(s)
- Zarzour Amine
- Department of Neurology, Foch Hospital, Versailles Saint-Quentin en Yvelines University, Suresnes, France.
| | - Batot Cedric
- Department of Neurology, Foch Hospital, Versailles Saint-Quentin en Yvelines University, Suresnes, France
| | - Boisseau William
- Stroke Unit Neurology, Hôpital Fondation A. de Rothschild, Université Paris-Cité, Université, Paris-Cité and Université Sorbonne Paris Nord (J.P.D.), INSERM, LVTS, F-75018 Paris, France
| | - Cho Tae-Hee
- From the Department of Stroke Medicine, Université Lyon 1, CREATIS, CNRS UMR 5220-INSERM U1044, INSA-Lyon, Hospices Civils de Lyon, Lyon, France
| | - Guillon Benoit
- Department of Neurology, Stroke Center, University Hospital of Nantes, Nantes, France
| | - Richard Sébastien
- Neurology, Stroke Unit, Université, CIC-P 1433, INSERM U1116, CHRU-Nancy, F-54000 Nancy, France
| | - Marnat Gaultier
- Department of Interventional Neuroradiology, University Hospital of Bordeaux, France
| | - Arquizan Caroline
- Department of Neurology, Stroke center, Hôpital Gui de Chauliac, Montpellier Neuroradiology, France
| | - Lapergue Bertrand
- Department of Neurology, Foch Hospital, Versailles Saint-Quentin en Yvelines University, Suresnes, France
| | - Weisenburger Lile David
- Department of Neurology, Foch Hospital, Versailles Saint-Quentin en Yvelines University, Suresnes, France
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Fischer U, Kaesmacher J, Strbian D, Eker O, Cognard C, Plattner PS, Bütikofer L, Mordasini P, Deppeler S, Pereira VM, Albucher JF, Darcourt J, Bourcier R, Benoit G, Papagiannaki C, Ozkul-Wermester O, Sibolt G, Tiainen M, Gory B, Richard S, Liman J, Ernst MS, Boulanger M, Barbier C, Mechtouff L, Zhang L, Marnat G, Sibon I, Nikoubashman O, Reich A, Consoli A, Lapergue B, Ribo M, Tomasello A, Saleme S, Macian F, Moulin S, Pagano P, Saliou G, Carrera E, Janot K, Hernández-Pérez M, Pop R, Schiava LD, Luft AR, Piotin M, Gentric JC, Pikula A, Pfeilschifter W, Arnold M, Siddiqui AH, Froehler MT, Furlan AJ, Chapot R, Wiesmann M, Machi P, Diener HC, Kulcsar Z, Bonati LH, Bassetti CL, Mazighi M, Liebeskind DS, Saver JL, Gralla J. Thrombectomy alone versus intravenous alteplase plus thrombectomy in patients with stroke: an open-label, blinded-outcome, randomised non-inferiority trial. Lancet 2022; 400:104-115. [PMID: 35810756 DOI: 10.1016/s0140-6736(22)00537-2] [Citation(s) in RCA: 121] [Impact Index Per Article: 60.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/02/2022] [Accepted: 03/15/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Whether thrombectomy alone is equally as effective as intravenous alteplase plus thrombectomy remains controversial. We aimed to determine whether thrombectomy alone would be non-inferior to intravenous alteplase plus thrombectomy in patients presenting with acute ischaemic stroke. METHODS In this multicentre, randomised, open-label, blinded-outcome trial in Europe and Canada, we recruited patients with stroke due to large vessel occlusion confirmed with CT or magnetic resonance angiography admitted to endovascular centres. Patients were randomly assigned (1:1) via a centralised web server using a deterministic minimisation method to receive stent-retriever thrombectomy alone or intravenous alteplase plus stent-retriever thrombectomy. In both groups, thrombectomy was initiated as fast as possible with any commercially available Solitaire stent-retriever revascularisation device (Medtronic, Irvine, CA, USA). In the combined treatment group, intravenous alteplase (0·9 mg/kg bodyweight, maximum dose 90 mg per patient) was administered as early as possible after randomisation for 60 min with 10% of the calculated dose given as an initial bolus. Personnel assessing the primary outcome were masked to group allocation; patients and treating physicians were not. The primary binary outcome was a score of 2 or less on the modified Rankin scale at 90 days. We assessed the non-inferiority of thrombectomy alone versus intravenous alteplase plus thrombectomy in all randomly assigned and consenting patients using the one-sided lower 95% confidence limit of the Mantel-Haenszel risk difference, with a prespecified non-inferiority margin of 12%. The main safety endpoint was symptomatic intracranial haemorrhage assessed in all randomly assigned and consenting participants. This trial is registered with ClinicalTrials.gov, NCT03192332, and is closed to new participants. FINDINGS Between Nov 29, 2017, and May 7, 2021, 5215 patients were screened and 423 were randomly assigned, of whom 408 (201 thrombectomy alone, 207 intravenous alteplase plus thrombectomy) were included in the primary efficacy analysis. A modified Rankin scale score of 0-2 at 90 days was reached by 114 (57%) of 201 patients assigned to thrombectomy alone and 135 (65%) of 207 patients assigned to intravenous alteplase plus thrombectomy (adjusted risk difference -7·3%, 95% CI -16·6 to 2·1, lower limit of one-sided 95% CI -15·1%, crossing the non-inferiority margin of -12%). Symptomatic intracranial haemorrhage occurred in five (2%) of 201 patients undergoing thrombectomy alone and seven (3%) of 202 patients receiving intravenous alteplase plus thrombectomy (risk difference -1·0%, 95% CI -4·8 to 2·7). Successful reperfusion was less common in patients assigned to thrombectomy alone (182 [91%] of 201 vs 199 [96%] of 207, risk difference -5·1%, 95% CI -10·2 to 0·0, p=0·047). INTERPRETATION Thrombectomy alone was not shown to be non-inferior to intravenous alteplase plus thrombectomy and resulted in decreased reperfusion rates. These results do not support omitting intravenous alteplase before thrombectomy in eligible patients. FUNDING Medtronic and University Hospital Bern.
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Affiliation(s)
- Urs Fischer
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department of Neurology, University Hospital Basel, University of Basel, Basel, Switzerland.
| | - Johannes Kaesmacher
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Daniel Strbian
- Department of Neurology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Omer Eker
- Department of Neuroradiology, Hospices Civils de Lyon, Lyon, France
| | - Christoph Cognard
- Department of Diagnostic and Therapeutic Neuroradiology, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Patricia S Plattner
- Neuro Clinical Trial Unit, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Pasquale Mordasini
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Sandro Deppeler
- Neuro Clinical Trial Unit, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Vitor M Pereira
- Division of Neurosurgery, Department of Surgery and Medical Imaging, St Michael's Hospital, University of Toronto, Toronto, ON, Canada
| | | | - Jean Darcourt
- Department of Diagnostic and Therapeutic Neuroradiology, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Romain Bourcier
- Department of Diagnostic and Interventional Neuroradiology, Centre Hospitalier Universitaire de Nantes, Nantes Université, Nantes, France
| | - Guillon Benoit
- Department of Neurology, Centre Hospitalier Universitaire de Nantes, Nantes Université, Nantes, France
| | | | | | - Gerli Sibolt
- Department of Neurology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Marjaana Tiainen
- Department of Neurology, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Benjamin Gory
- Department of Diagnostic and Therapeutic Neuroradiology, INSERM U1254, CHRU-Nancy, Université de Lorraine, Nancy, France
| | - Sébastien Richard
- Department of Neurology, Stroke Unit, INSERM U1116, CHRU-Nancy, Université de Lorraine, Nancy, France
| | - Jan Liman
- Department of Neurology, University Medical Center Goettingen, Goettingen, Germany
| | - Marielle Sophie Ernst
- Department of Neuroradiology, University Medical Center Goettingen, Goettingen, Germany
| | - Marion Boulanger
- Department of Neurology, CHU Caen Normandie, University Caen Normandie, INSERM U1237, Caen, France
| | - Charlotte Barbier
- Department of Neuroradiology, CHU Caen Normandie, University Caen Normandie, INSERM U1237, Caen, France
| | - Laura Mechtouff
- Department of Vascular Neurology, Hospices Civils de Lyon, Lyon, France
| | - Liqun Zhang
- Department of Neurology, St George's University Hospital NHS Foundation Trust, London, UK
| | - Gaultier Marnat
- Department of Interventional and Diagnostic Neuroradiology, CHU Bordeaux, University of Bordeaux, Bordeaux, France
| | - Igor Sibon
- Stroke Unit, CHU Bordeaux, University of Bordeaux, Bordeaux, France
| | - Omid Nikoubashman
- Department of Neuroradiology, University Hospital RWTH Aachen, Aachen, Germany
| | - Arno Reich
- Department of Neurology, University Hospital RWTH Aachen, Aachen, Germany
| | - Arturo Consoli
- Department of Stroke and Diagnostic and Interventional Neuroradiology, Foch Hospital, Suresnes, France
| | - Bertrand Lapergue
- Department of Stroke and Diagnostic and Interventional Neuroradiology, Foch Hospital, Suresnes, France
| | - Marc Ribo
- Stroke Unit, Department of Neurology, Hospital Vall d'Heborn, Barcelona, Spain
| | - Alejandro Tomasello
- Interventional Neuroradiology, Department of Radiology, Hospital Vall d'Heborn, Barcelona, Spain
| | - Suzana Saleme
- Department of Neuroradiology, University Hospital of Limoges, Limoges, France
| | - Francisco Macian
- Department of Neurology, University Hospital of Limoges, Limoges, France
| | | | - Paolo Pagano
- Department of Neuroradiology, CHU Reims, Reims, France
| | - Guillaume Saliou
- Service of Interventional and Diagnostic Radiology, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Emmanuel Carrera
- Department of Neurology, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Kevin Janot
- Department of Diagnostic and Interventional Neuroradiology, Tours University Hospital, Tours, France
| | - María Hernández-Pérez
- Stroke Unit, Department of Neurosciences, University Hospital Germans Trias i Pujol, Barcelona, Spain
| | - Raoul Pop
- Department of Interventional Neuroradiology, Strasbourg University Hospitals, Strasbourg, France
| | | | - Andreas R Luft
- Department of Neurology, University Hospital of Zurich, Zurich, Switzerland; Cereneo, Center for Neurology and Rehabilitation, Vitznau, Switzerland
| | - Michel Piotin
- Department of Interventional Neuroradiology, Fondation Rothschild Hospital, Paris, France
| | - Jean Christophe Gentric
- Department of Neuroradiology, Brest University Hospital, Brest, France; GETBO, INSERM Unit UMR 1034, Brest, France
| | - Aleksandra Pikula
- Division of Neurology, Department of Medicine, Toronto Western Hospital, University of Toronto, Toronto, ON, Canada
| | | | - Marcel Arnold
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Adnan H Siddiqui
- Department of Neurosurgery, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, New York, NY, USA
| | - Michael T Froehler
- Vanderbilt Cerebrovascular Program, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Anthony J Furlan
- School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - René Chapot
- Department of Intracranial Endovascular Therapy, Alfried Krupp Krankenhaus Essen, Essen, Germany
| | - Martin Wiesmann
- Department of Neuroradiology, University Hospital RWTH Aachen, Aachen, Germany
| | - Paolo Machi
- Department of Neuroradiology, Hôpitaux Universitaires de Genève, Geneva, Switzerland
| | - Hans-Christoph Diener
- Department of Neuroepidemiology, Institute for Medical Informatics, Biometry and Epidemiology IMIBE), Essen, Germany
| | - Zsolt Kulcsar
- Department of Neuroradiology, University Hospital of Zurich, Zurich, Switzerland
| | - Leo H Bonati
- Department of Neurology, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Claudio L Bassetti
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Mikael Mazighi
- Department of Neurology, Lariboisière Hospital, University of Paris, FHU NeuroVasc, INSERM 1148, Paris, France; Department of Interventional Neuroradiology, Adolphe de Rothschild Hospital Foundation, University of Paris, FHU NeuroVasc, INSERM 1148, Paris, France
| | - David S Liebeskind
- Department of Neurology and Comprehensive Stroke Center, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Jeffrey L Saver
- Department of Neurology and Comprehensive Stroke Center, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Jan Gralla
- University Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Nyangoh Timoh K, Deffon J, Moszkowicz D, Lebacle C, Creze M, Martinovic J, Zaitouna M, Diallo D, Lavoue V, Fautrel A, Benoit G, Bessede T. Smooth muscle of the male pelvic floor: An anatomic study. Clin Anat 2019; 33:810-822. [PMID: 31746012 DOI: 10.1002/ca.23515] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 10/14/2019] [Accepted: 10/20/2019] [Indexed: 01/06/2023]
Abstract
Knowledge of the anatomy of the male pelvic floor is important to avoid damaging the pelvic floor muscles during surgery. We set out to explore the structure and innervation of the smooth muscle (SM) of the whole pelvic floor using male fetuses. We removed en-bloc the entire pelvis of three male fetuses. The specimens were serially sectioned before being stained with Masson's trichrome and hematoxylin and eosin, and immunostained for SMs, and somatic, adrenergic, sensory and nitrergic nerve fibers. Slides were digitized for three-dimensional reconstruction. We individualized a middle compartment that contains SM cells. This compartment is in close relation with the levator ani muscle (LAM), rectum, and urethra. We describe a posterior part of the middle compartment posterior to the rectal wall and an anterior part anterior to the rectal wall. The anterior part is split into (1) a centro-levator area of SM cells localized between the right and left LAM, (2) an endo-levator area that upholsters the internal aspect of the LAM, and (3) an infra-levator area below the LAM. All these areas are innervated by autonomic nerves coming from the inferior hypogastric plexus. The core and the infra-levator area receive the cavernous nerve and nerves supplying the urethra. We thus demonstrate that these muscular structures are smooth and under autonomic influence. These findings are relevant for the pelvic surgeon, and especially the urologist, during radical prostatectomy, abdominoperineal resection and intersphincteric resection. Clin. Anat., 2019. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Krystel Nyangoh Timoh
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France.,Department of Obstetrics and Gynecology, Hopital Universitaire de Rennes, University Rennes 1, Rennes, France
| | - J Deffon
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France
| | - D Moszkowicz
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France
| | - C Lebacle
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France.,Urology Department, Hopitaux Universitaires Paris-Sud, APHP, Le Kremlin-Bicetre, France
| | - M Creze
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France
| | - J Martinovic
- Department of Fetal Pathology, Hopitaux Universitaires Paris-Sud, APHP, Clamart, France
| | - M Zaitouna
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France
| | - D Diallo
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France
| | - V Lavoue
- Department of Obstetrics and Gynecology, Hopital Universitaire de Rennes, University Rennes 1, Rennes, France
| | - A Fautrel
- Université de Rennes 1, Rennes, France.,INSERM, UMR991 Liver Metabolism and Cancer, Rennes, France
| | - G Benoit
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France
| | - T Bessede
- UMR 1195, University Paris Sud, INSERM, Université Paris-Saclay, Le Kremlin-Bicetre, France.,Urology Department, Hopitaux Universitaires Paris-Sud, APHP, Le Kremlin-Bicetre, France
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Hiesse C, Kriaa F, Alard P, Lantz O, Noury J, Bensadoun H, Benoit G, Charpentier B, Fries D, Bazin H. Prophylactic use of the IL-2 receptor-specific monoclonal antibody LO-Tact-1 with cyclosporin A and steroids in renal transplantation. Transpl Int 2018. [DOI: 10.1111/tri.1992.5.s1.444] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Bertrand MM, Alsaid B, Droupy S, Ripoche J, Benoit G, Adalian P, Brunet C, Piercecchi-Marti MD, Prudhomme M. Anatomical basis of the coordination between smooth and striated urethral and anal sphincters: loops of regulation between inferior hypogastric plexus and pudendal nerve. Immuno-histological study with 3D reconstruction. Surg Radiol Anat 2016; 38:963-72. [DOI: 10.1007/s00276-016-1655-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 02/15/2016] [Indexed: 11/24/2022]
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Salomon L, Bastuji-Garin S, Soulie M, Devonec M, Boutin E, Mandron E, Benoit G, Rischmann P, Mottet N, Gasman D, Irani J, De la Taille A, Zerbib M, Vaesen C, Dore B, Lebret T, Colombel M, Lechevallier E, Gregoire L, Allory Y, Abbou C. [Not Available]. Prog Urol 2015; 25:793. [PMID: 26544349 DOI: 10.1016/j.purol.2015.08.154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | - M Soulie
- Hôpital Rangueil, Toulouse, France
| | - M Devonec
- Centre hospitalier Lyon Sud, Lyon, France
| | - E Boutin
- CHU Henri-Mondor, Créteil, France
| | | | - G Benoit
- CHU Bicêtre, Le Kremlin-Bicêtre, France
| | | | - N Mottet
- CHU de Saint-Étienne, Saint-Étienne, France
| | - D Gasman
- Clinique de l'Yvette, Longjumeau, France
| | - J Irani
- CHU La Milétrie, Poitiers, France
| | | | | | - C Vaesen
- Groupe hospitalier Pitié Salpêtrière, Paris, France
| | - B Dore
- CHU de Poitiers, Poitiers, France
| | | | | | | | | | - Y Allory
- CHU Henri-Mondor, Créteil, France
| | - C Abbou
- CHU Henri-Mondor, Créteil, France
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7
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Durand-Zaleski I, Rabetrano H, Devonec M, Mandron E, Soulie M, De la Taille A, Benoit G, Mottet N, Gasman D, Dore B, Zerbib M, Vaessen C, Irani J, Lebret T, Colombel M, Lechevallier E, Bastuji-Garin S, Allory Y, Abbou C, Rischmann P, Salomon L. Résultats économiques de Propenlap, étude prospective multicentrique comparant les voies ouvertes et mini-invasives de la prostatectomie totale. Prog Urol 2015; 25:742. [DOI: 10.1016/j.purol.2015.08.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lebacle C, Nyangoh Timoh K, Martinovic J, Zaitouna M, Diallo D, Benoit G, Bessede T. Dissection anatomique assistée par ordinateur (DAAO) du plexus rénal pour affiner la dénervation rénale dans le traitement de l’hypertension artérielle réfractaire. Prog Urol 2015; 25:818-9. [DOI: 10.1016/j.purol.2015.08.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Benoit G, Etchemendigaray C, Nguyen-Xuan HT, Vauloup-Fellous C, Ayoubi JM, Picone O. Management of varicella-zoster virus primary infection during pregnancy: A national survey of practice. J Clin Virol 2015; 72:4-10. [PMID: 26356985 DOI: 10.1016/j.jcv.2015.07.301] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 06/23/2015] [Accepted: 07/21/2015] [Indexed: 01/30/2023]
Abstract
BACKGROUND Varicella (VZV) infection in pregnancy can result in serious outcomes: maternal pneumoniae irrespective of the term of pregnancy, and lead to congenital varicella syndrome before 18 weeks of gestation and neonatal varicella. There are between 350 and 500 cases a year in France. Until now, there have been no scientific obstetrical guidelines for clinical practice in France for VZV infection during pregnancy. OBJECTIVES To evaluate health care providers' knowledge and practices concerning varicella infection during pregnancy in France. STUDY DESIGN An anonymous survey on VZV infection was sent by e-mail to gynecologists-obstetricians and midwives. We evaluated their knowledge and practices concerning VZV transmission, maternal varicella, congenital varicella syndrome, neonatal varicella and prevention. RESULTS The survey was completed by 271 professionals: gynecologists (161/271; 60%) and midwives (110/271; 40%). Among 20 items, 5 were multiple choice questions. 29 correct answers were expected. Scores ranged from 6/29 to 28/29 (mean score: 17.44/29). CONCLUSIONS The consequences of VZV primary infection in pregnancy are poorly known. We reveal a diversity of management among practitioners in our study population, not always in accordance with the international scientific literature or with the guidelines of other countries. Health care providers should update their knowledge of varicella infection during pregnancy. The publication of national guidelines could help to achieve this objective.
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Affiliation(s)
- G Benoit
- Service de Gynécologie-obstétrique, Centre hospitalier intercommunal de Poissy/ Saint- Germain-en-Laye, Poissy 78300, France; Université Paris Ouest, Saint-Quentin en Yvelines, 78190, France
| | - C Etchemendigaray
- Service de Gynécologie-obstétrique, Centre hospitalier intercommunal de Poissy/ Saint- Germain-en-Laye, Poissy 78300, France; Université Paris Ouest, Saint-Quentin en Yvelines, 78190, France
| | - H T Nguyen-Xuan
- Service de gynécologie obstétrique et médecine de la reproduction, Hôpital Foch, 40 Rue Worth, 92120 Suresnes, France
| | - Christelle Vauloup-Fellous
- Paris-Sud University, AP-HP, Hôpital Paul Brousse, Virology Department, Univ Paris-Sud, UMR-S 785, INSERM U785, Villejuif 94804, France
| | - J-M Ayoubi
- Service de gynécologie obstétrique et médecine de la reproduction, Hôpital Foch, 40 Rue Worth, 92120 Suresnes, France
| | - O Picone
- Service de gynécologie obstétrique et médecine de la reproduction, Hôpital Foch, 40 Rue Worth, 92120 Suresnes, France.
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Morand K, Chouquet T, Benoit G. PS-081 Accidental cytotoxic exposure of paediatric patients, relatives and healthcare staff: improving the safety of cytotoxic syringes. Eur J Hosp Pharm 2015. [DOI: 10.1136/ejhpharm-2015-000639.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Richard C, Sigward E, Fratta A, Benoit G. DI-081 Uninsured patients: tools aimed at safe dispensing. Eur J Hosp Pharm 2014. [DOI: 10.1136/ejhpharm-2013-000436.252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Bertrand MM, Alsaid B, Droupy S, Benoit G, Prudhomme M. Optimal plane for nerve sparing total mesorectal excision, immunohistological study and 3D reconstruction: an embryological study. Colorectal Dis 2013; 15:1521-8. [PMID: 24131598 DOI: 10.1111/codi.12459] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Accepted: 06/09/2013] [Indexed: 02/08/2023]
Abstract
AIM Genito-urinary complications are frequent after rectal surgery and are often due to nerve damage. The relationship between the pelvic nerves and surgical planes are unclear. The aim of the study was to determine the relationship between the inferior hypogastric plexus and the fascia of the lateral pelvic wall and between Denonvilliers' fascia and the efferent branches of the inferior hypogastric plexus. METHOD Computer-assisted anatomical dissection was used. Serial histological sections were made from six human foetuses and a male adult. Sections were stained with haematoxylin and eosin, Masson's trichrome and immunostainings. The sections were then digitalized and reconstructed in three dimensions. RESULTS The inferior hypogastric plexus was situated in a virtual space between the fascia propria of the rectum and the fascia on the upper surface of the levator ani. During the lateral dissection, the optimal surgical plane is the plane of the fascia propria of the rectum. We located Denonvilliers' fascia in three dimensions. It plays the role of a protective sheet for the neurovascular bundle. The optimal plane for nerve preservation is situated behind Denonvilliers' fascia. CONCLUSION This study has enabled a clear visualization of the optimal planes to perform total mesorectal excision while ensuring nerve preservation. Three-dimensional visualization clearly helps to bridge the gap between histological examination and the findings of surgery.
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Affiliation(s)
- M M Bertrand
- Laboratory of Experimental Anatomy, Faculty of Medicine, Montpellier-Nîmes, University Montpellier I, Nîmes, France
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Giroud A, Morand K, Benoit G, Leverger G. DGI-038 Gemtuzumab Ozogamicin as Salvage Treatment in Children with Acute Myeloid Leukaemia Relapse: A Retrospective Study. Eur J Hosp Pharm 2013. [DOI: 10.1136/ejhpharm-2013-000276.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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El Guindi W, Dreyfus M, Carles G, Lambert V, Herlicoviez M, Benoit G. [Contribution of 3D-ultrasound in the heterotaxy syndromes: about four cases and review of the literature]. J Gynecol Obstet Hum Reprod 2012; 41:489-496. [PMID: 22704359 DOI: 10.1016/j.jgyn.2012.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 03/30/2012] [Accepted: 04/18/2012] [Indexed: 06/01/2023]
Abstract
The position or location of the organs and vessels is usually classified into three types: situs solitus, situs inversus, and situs ambigus. Situs solitus is the usual arrangement of organs and vessels within the body. Only 0.6 to 0.8% of patients with situs solitus and levocardia have associated congenital heart diseases. Situs inversus refers to an anatomic arrangement that is the mirror image of situs solitus. The incidence of congenital heart disease is increased to 3 to 5% in the patients with situs inversus. The patients with heterotaxy have congenital heart disease in high incidence, ranging from 50 to nearly 100%. We present four cases diagnosed in our department in a period of 18 months. With these four cases and a review in the literature, we explore the definitions and characteristics of heterotaxy syndromes and we study the role of 3D ultrasound.
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Affiliation(s)
- W El Guindi
- Service de gynécologie-obstétrique, centre hospitalier de l'Ouest Guyanais, 16 boulevard du Général-Leclerc, BP 245, Saint-Laurent-du-Maroni, Guyana.
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Cros J, Letierce A, Posseme K, Benoit G, Guettier C, Ferlicot S. Identification de nouveaux marqueurs moléculaires à valeur pronostique des adénocarcinomes à cellules claires du rein. Ann Pathol 2011. [DOI: 10.1016/j.annpat.2011.09.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Berte N, Cayzergues L, Meyer F, Jira H, Eugene M, Conti M, Loric S, Hammoudi Y, Benoit G, Droupy S, Hubert J, Eschwege P. [Ischemic lesions in kidneys after extracorporeal shock wave lithotripsy demonstrated by Proton NMR spectroscopy of urine samples]. Prog Urol 2011; 21:455-8. [PMID: 21693355 DOI: 10.1016/j.purol.2011.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 02/01/2011] [Accepted: 02/11/2011] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this prospective study was to investigate the effect of extracorporeal shock wave lithotripsy (SWL) on kidneys of patients with pyelic stone disease. The effects of SWL were assessed by high-resolution proton nuclear magnetic resonance (HNMR) spectroscopy of urine samples. METHODS Twenty-three patients, aged 31-80years (mean: 55years), with pyelic stone disease were investigated before and after SWL. Multiparameter analysis was performed by HNMR spectroscopy of urine samples collected before and 5h after SWL (second miction post-SWL). RESULTS The most relevant resonances determined by HNMR spectroscopy were acetate, lactate, trimethylamine N-oxide and amino acids. Excretion of these markers increased significantly in comparison with pre-SWL urinary samples. CONCLUSION These results show that early ischemic damage occurs after SWL. Post-SWL. HNMR spectroscopy is an effective tool for noninvasive follow-up of renal damage.
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Affiliation(s)
- N Berte
- Service d'urologie, hôpitaux de Brabois, CHU de Nancy, avenue de Bourgogne, 54511 Vandœuvre-lès-Nancy, France
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Chok MK, Conti M, Almolki A, Ferlicot S, Loric S, Durrbach A, Benoit G, Droupy S, Eschwege P. Renoprotective potency of amifostine in rat renal ischaemia-reperfusion. Nephrol Dial Transplant 2010; 25:3845-51. [DOI: 10.1093/ndt/gfq314] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Fizazi K, Bonardel G, Massard C, Gross-Goupil M, Dela Motte Rouge T, Bossi A, Benoit G, Schlumberger M, Auperin A. 7161 Stage I seminoma: can 18Flurorodeoxyglucose positron emission tomography (FDG-PET) predict occult dissemination? Preliminary results of a phase II study. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)71494-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Ploussard G, Droupy S, Ferlicot S, Ples R, Rocher L, Richard S, Benoit G. Oncocytose rénale : à propos d’un cas. Prog Urol 2009; 19:142-4. [DOI: 10.1016/j.purol.2008.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2008] [Revised: 08/12/2008] [Accepted: 10/10/2008] [Indexed: 11/27/2022]
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Abouraddy AF, Bayindir M, Benoit G, Hart SD, Kuriki K, Orf N, Shapira O, Sorin F, Temelkuran B, Fink Y. Towards multimaterial multifunctional fibres that see, hear, sense and communicate. Nat Mater 2007; 6:336-47. [PMID: 17471274 DOI: 10.1038/nmat1889] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Virtually all electronic and optoelectronic devices necessitate a challenging assembly of conducting, semiconducting and insulating materials into specific geometries with low-scattering interfaces and microscopic feature dimensions. A variety of wafer-based processing approaches have been developed to address these requirements, which although successful are at the same time inherently restricted by the wafer size, its planar geometry and the complexity associated with sequential high-precision processing steps. In contrast, optical-fibre drawing from a macroscopic preformed rod is simpler and yields extended lengths of uniform fibres. Recently, a new family of fibres composed of conductors, semiconductors and insulators has emerged. These fibres share the basic device attributes of their traditional electronic and optoelectronic counterparts, yet are fabricated using conventional preform-based fibre-processing methods, yielding kilometres of functional fibre devices. Two complementary approaches towards realizing sophisticated functions are explored: on the single-fibre level, the integration of a multiplicity of functional components into one fibre, and on the multiple-fibre level, the assembly of large-scale two- and three-dimensional geometric constructs made of many fibres. When applied together these two approaches pave the way to multifunctional fabric systems.
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Affiliation(s)
- A F Abouraddy
- Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
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Le Guyader N, Pouliquen AL, Benoit G, Leverger G. Médicaments hors autorisation de mise sur le marché en hématologie–oncologie pédiatrique. Arch Pediatr 2006; 13:1267-8. [PMID: 16814531 DOI: 10.1016/j.arcped.2006.05.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2006] [Accepted: 05/30/2006] [Indexed: 11/20/2022]
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Abstract
Although laboratory dependence is an acknowledged problem in microbiology, it is seldom intensively studied or discussed. We demonstrate that laboratory dependence is real and quantifiable even in the popular model Escherichia coli. Here laboratory effects alter the equilibrium composition of a simple community composed of two strains of E. coli. Our data rule out changes in the bacterial strains, chemical batches, and human handling but implicate differences in growth medium, especially the water component.
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Affiliation(s)
- K J O'Keefe
- Department of Organismic and Evolutionary Biology, Harvard University, 26 Oxford Street, Cambridge, MA 02138, USA.
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Xu C, Giuliano F, Yaici ED, Conrath M, Trassard O, Benoit G, Vergé D. Identification of lumbar spinal neurons controlling simultaneously the prostate and the bulbospongiosus muscles in the rat. Neuroscience 2006; 138:561-73. [PMID: 16364554 DOI: 10.1016/j.neuroscience.2005.11.016] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2005] [Revised: 10/13/2005] [Accepted: 11/03/2005] [Indexed: 10/25/2022]
Abstract
Lumbar spinothalamic neurons in the lamina X of the L3-L4 spinal cord segment have been proposed to constitute the spinal ejaculation generator in male rats. Lumbar spinothalamic cells are immunoreactive for galanin and neurokinin-1 receptors. We previously showed that after injection of pseudorabies virus either in the bulbospongiosus muscle or in the prostate, retrogradely labeled cells in the L3-L4 segment also displayed galanin or neurokinin-1 receptor immunoreactivities, demonstrating a direct link between lumbar spinothalamic cells and two anatomical structures involved in the two phases of ejaculation i.e. the emission and the expulsion phases. In order to provide with a more precise anatomical support for the role of lumbar spinothalamic cells in controlling ejaculation, we injected simultaneously in male adult rats two strains of recombinant pseudorabies virus, expressing either beta-galactosidase (PRV-BaBlu) or green fluorescent protein (PRV-152) in the prostate and in the bulbospongiosus muscle, respectively. After 5 days, we performed multiple immunofluorescence experiments to detect PRV-BaBlu, PRV-152 and galanin or neurokinin-1 receptors in transverse sections of the L1-S1 segment. Double- and triple-labeled cells were counted using confocal laser scanning microscope. Double-labeled neurons with the two strains of pseudorabies virus were mainly found at the L3-L4 segment lateral to the central canal in lamina X and represented about 60% of the total number of pseudorabies virus-labeled neurons. All the double pseudorabies virus-labeled neurons also expressed lumbar spinothalamic and most of them neurokinin-1 receptor, identifying them as lumbar spinothalamic neurons. The convergence of retrograde labeling from prostate and bulbospongiosus muscle on the same lumbar spinothalamic cells strongly reinforce their role in the spinal control and coordination of the emission and expulsion of sperm.
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Affiliation(s)
- C Xu
- Groupe de Recherche en Urologie, UPRESS EA 1602, Faculté de Médecine Paris-Sud, 63 rue Gabriel Péri, 94270 Le Kremlin-Bicêtre, France
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Essam T, Tamer E, Amin MA, El Tayeb O, Mattiasson B, Guieysse B, Ossama ET, Bo M, Benoit G. Biological treatment of industrial wastes in a photobioreactor. Water Sci Technol 2006; 53:117-25. [PMID: 16862781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
An algal-bacterial consortium was tested for the treatment from a coke factory. A Chlorella vulgaris strain and a phenol-degrading Alcaligenes sp. were first isolated from the wastewater treatment plant to serve as inocula in the subsequent biodegradation tests. Batch tests were then conducted with samples from the real wastewater or using a synthetic wastewater containing 325 mg phenol/l and 500 mg NH4+/l as target pollutants. Direct biological treatment of the real wastewater was not possible due to the toxicity of organic compounds. Activated carbon adsorption and UV(A-B)-irradiation were efficient in detoxifying the effluent for subsequent biological treatment as inoculation of pretreated samples with the algal-bacterial consortium was followed by complete phenol removal and NH4+ removal of 45%. Complete phenol removal and 33% NH4+ removal were achieved during the fed-batch treatment of artificial wastewater at 6 d hydraulic retention time (HRT). Under continuous feeding at 3.6 d HRT, phenol and NH4+ removal dropped to 58 and 18%, respectively. However, complete phenol removal and 29% NH4+ removal were achieved when 8 g NaHCO3/l was added to the artificial wastewater to enhance algal growth. This study confirms the potential of solar-based industrial wastewater treatment based on solar-based UV pretreatment followed by algal-bacterial biodegradation.
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Affiliation(s)
- T Essam
- Department of Biotechnology, Lund University, Sweden.
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Mathaut S, Bordenave J, Fratta A, Benoit G. Contrôle qualité des préparations hospitalières : bilan de la productionde gélules d’un hôpital pédiatrique. Annales Pharmaceutiques Françaises 2006; 64:44-51. [PMID: 16449938 DOI: 10.1016/s0003-4509(06)75293-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In France, lack of paediatric drugs leads pharmacies to produce many hospital preparations in order to meet prescribers'needs. To ensure the quality of these preparations, the pharmacy department of the Armand Trousseau Child Hospital set up a quality control system of its capsules. It integrates both European Pharmacopeia's requirements (Mass and Content uniformity test) and more strict internal quality specifications. They include exactitude of the average content compared to the awaited content, coefficient of variation of the contents and, "modified" content uniformity test. These criteria and the percentage of nonconformity are used as indicators to assure quality follow-up of the preparations. We reviewed quality control records for five hospital preparations produced over the last three years. We highlighted that lower dosage showed a higher percentage of nonconformity compared to higher dosage. Type of active ingredients was a key factors too (1,0% and 14.8% of non conform batches for ursodesoxycholic acid and for morphine hydrochloride respectively). Analysis showed that the essential character of content test because mass test is not predictive of the conformity of the batch. Content test was the main criterion to judge batches conformity. Thus, it will be generalized to all our preparations. These study results helped us to implement new procedures to assure an ongoing improvement of our practices of preparation.
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Affiliation(s)
- S Mathaut
- Hôpital pédiatrique Armand Trousseau, Service de pharmacie, 26, avenue du Docteur Arnold Netter, F75571 Paris Cedex 12
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Fratta A, Bordenave J, Boissinot C, Le Grand J, Esquirol C, Radideau E, Benoit G. [Development of an intravesial oxybutynin chloride solution: from formulation to quality control]. Ann Pharm Fr 2005; 63:162-6. [PMID: 15976684 DOI: 10.1016/s0003-4509(05)82267-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Intravesical oxybutynin chloride has demonstrated its efficacy in children with neurogenic bladder and urinary incontinence refractory to oral anticholinergic agents. We developed a 205 microg/ml oxybutynin chloride solution in accordance with the specifications of the European Pharmacopeae. To guarantee quality, we assessed and validated formulation, the preparation process, and packaging. The solution was obtained by disolving oxybutynin chloride in 0.9% saline and sterile filtration. The solution was then packaged in syringes. Physical properies for intravesical instillation were met: pH 5.76 +/- 0.03, osmolality 281 mosmol/kg. The unit dose package guarantees sterility of the solution until use. The medication is given by adapting the syringe on the Luer Lock exteremity of the urinary catheter. The solution remains stable up to one month at 4 degrees C.
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Affiliation(s)
- A Fratta
- Service de Pharmacie, Hôpital Armand Trousseau, 26, avenue du Docteur Arnold Netter, 75571 Paris Cedex 12
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Abstract
Placenta percreta is a severe condition associated with maternal morbidity and mortality even when surgery is performed electively. Arteries ligation, embolisation, medical treatment by methotrexate can be appropriate treatment to avoid catastrophic surgery. The purpose of this report is to present a case where the placenta was left in situ to avoid cystectomy at the time of cesarean section, with subsequent failure of the conservative treatment.
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Affiliation(s)
- A Chauveaud-Lambling
- Service de Gynécologie-Obstétrique et Médecine de la Reproduction, Hôpital Antoine-Béclère, AP-HP, 157, rue de la Porte-de-Trivaux, 92141 Clamart
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Darblade B, Behr-Roussel D, Gorny D, Lebret T, Benoit G, Hieble JP, Brooks D, Alexandre L, Giuliano F. Piboserod (SB 207266), a selective 5-HT4 receptor antagonist, reduces serotonin potentiation of neurally-mediated contractile responses of human detrusor muscle. World J Urol 2005; 23:147-51. [PMID: 15902472 DOI: 10.1007/s00345-005-0499-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2004] [Accepted: 03/24/2005] [Indexed: 12/12/2022] Open
Abstract
The aim of this study is to evaluate the potency of piboserod (SB 207266), a selective 5-HT(4) receptor antagonist, at inhibiting the 5-HT(4)-mediated potentiating effect of serotonin (5-HT) on the neurally-mediated contractile responses of human detrusor strips to electrical field stimulations (EFS). Strips of human detrusor muscle were mounted in Krebs-HEPES buffer under a resting tension of 500 mg and EFS (20 Hz, 1 ms duration at 300 mA for 5 s) was applied continuously at 1 min intervals. After stabilization of the EFS-induced contractions, concentration-response curves to 5-HT (0.1 nM-100 microM) were constructed in the absence or presence of 1 or 100 nM of piboserod. The experiments were performed in the presence of methysergide (1 microM) and ondansetron (3 microM) to block 5HT(1)/5HT(2) and 5-HT(3) receptors, respectively. 5-HT potentiated the contractile responses to EFS of human bladder strips in a concentration-dependent manner, with a maximum mean of 60.0+/-19.9% of the basal EFS-evoked contractions. Piboserod did not modify the basal contractions but concentration-dependently antagonized the ability of 5-HT to enhance bladder strip contractions to EFS. In presence of 1 and 100 nM of piboserod, the maximal 5-HT-induced potentiations were reduced to 45.0+/-7.9 and 38.7+/-8.7%, respectively. A mean apparent antagonist dissociation constant value (K(B)) of 0.56+/-0.09 nM was determined. These data show the ability of piboserod to antagonize with high potency the enhancing properties of 5-HT on neurally-mediated contractions of isolated human bladder strips. Therefore, the 5-HT(4) receptor might represent an attractive pharmacological target for the treatment of overactive bladder.
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Affiliation(s)
- B Darblade
- Pelvipharm, Domaine CNRS, 1 avenue de la terrasse, Bâtiment 5, 91190 Gif-sur-Yvette, France
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Giuliano P, Bernabé J, Laurin M, Droupy S, Benoit G, Alexandre L, Clément P. 141Tamsulosin impairs bulbospongiosus muscle (BS) contractions induced by central injection of 8-hydroxy-2-(DI-N-propylamino) tetralin (8-OH-DPAT) in anaesthetised rats while alfuzosin does not. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s1569-9056(05)80150-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Le Guyader N, Auvrignon A, Demontoux V, Fasola S, Fratta A, Pellegrino B, Benoit G, Leverger G. Intérêt d’Abelcet® dans la prise en charge des enfants neutropéniques fébriles. ACTA ACUST UNITED AC 2004; 52:550-5. [PMID: 15531121 DOI: 10.1016/j.patbio.2004.07.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2004] [Accepted: 07/15/2004] [Indexed: 10/26/2022]
Abstract
AIM OF STUDY In order to optimise the use of new forms of Amphotericine B (Ampho B), a decisional tree was created at the end of 2001 in the paediatric hemato-oncology unit for the empirical antifungal treatment in febrile neutropenic children: the standard remained conventional Ampho B and Abelcet was proposed in case of antecedent or occurrence of a deterioration of the renal function (DRF). In order to validate the place of Abelcet we initiated a retrospective study over year 2002. RESULTS 21 treatments were begun in 14 children for a median duration of 8 days (1-48 days). Three kind of indications were found: DRF antecedent (10 episodes: A group), DRF occurrence during a treatment with conventional Ampho B (7 episodes: B group), age lower than 1 year (3 episodes). 81% of the children were thus treated according to the decisional tree. The clinical tolerance was good in 90% of the cases, with a premedication in half of the cases. The study of the renal function showed a good renal tolerance for 6 episodes out of 9 evaluable in A group, 3 resolutions and 2 stabilisation of the renal failure for the 5 evaluable episodes of the B group. Seven to ten days of treatment by Abelcet were necessary to obtain the renal failure resolved. CONCLUSION This study confirms the interest of Abelcet in the empirical antifungal treatment in febrile neutropenic children and specially in children having antecedents of DRF related or not to a treatment with conventional Ampho B.
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Affiliation(s)
- N Le Guyader
- Service de pharmacie, hôpital Armand-Trousseau, 26, avenue du Docteur-Arnold-Netter, 75012 Paris, France.
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Theodore C, Terrier-Lacombe MJ, Laplanche A, Benoit G, Fizazi K, Stamerra O, Wibault P. Bilateral germ-cell tumours: 22-year experience at the Institut Gustave Roussy. Br J Cancer 2004; 90:55-9. [PMID: 14710206 PMCID: PMC2395303 DOI: 10.1038/sj.bjc.6601464] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to describe the incidence, clinical and histological characteristics, treatment and long-term follow-up of bilateral germ-cell tumours (BGCT) of the testis in order to determine in what respects they differ significantly from unilateral germ-cell tumours. In all, 31 patients with BGCT had metachronous tumours and 14 had synchronous tumours. Among the metachronous tumours, 61% occurred more than 5 years after the first tumour. The overall incidence of BGCT in patients with testicular germ-cell tumours (TGCT) was 1.9%. The incidence was 3.2% in patients presenting with a seminoma and 1.4 % in patients presenting with a nonseminomatous germ-cell tumour (NSGCT). Patients under 30 years of age at the time of the initial diagnosis had a higher incidence of bilateral tumours compared with older men. The outcome of BGCT was excellent. A high association was found between BGCT, sterility and suspected genetic risk factors for TGCT. These results argue against a systematic contralateral biopsy at diagnosis of first TGCT in all patients, but emphasise the importance of patient education and of the need to better identify patients at risk for a second TGCT. Therapeutic indications for synchronous BGCT, including conservative treatment, need to be better defined.
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Affiliation(s)
- Ch Theodore
- Department of Medicine, Institut Gustave Roussy, 39, rue Camille Desmoulins, 94800 Villejuif, France.
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Hiesse C, Kriaa F, Alard P, Lantz O, Noury J, Bensadoun H, Benoit G, Charpentier B, Fries D, Bazin H. Prophylactic use of the IL-2 receptor-specific monoclonal antibody LO-Tact-1 with cyclosporin A and steroids in renal transplantation. Transpl Int 2003; 5 Suppl 1:S444-7. [PMID: 14621841 DOI: 10.1007/978-3-642-77423-2_129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
LO-Tact-1 is a rat anti-human monoclonal antibody which is directed to the 55-kDa alpha-chain of the interleukin 2 (IL2) receptor. We conducted a pilot trial in 15 first-time cadaveric renal transplant patients undergoing for immunosuppression a 14-day course of LO-Tact-1 (10 mg i.v. daily) together with cyclosporine, low dose steroids (0.5 mg/kg) and azathioprine. Results showed a good immunosuppressive effect, as measured by the similar incidence of acute rejection episodes (0.6 per patient) when compared with 20 patients treated during the same period with our standard quadruple prophylactic combination with higher initial doses of steroids (2 mg/kg) and antilymphocyte globulin (ALG) instead of LO-Tact-1 (0.4 per patient). At 2 years post-transplant, graft survival was 93%, and only 1 patient lost his kidney by rejection. No local or general adverse effect of antibody administration was encountered, and haematological changes remained of minor importance. Local bacterial infection was observed in 3 patients, but viral diseases (including cytomegalovirus, CMV) remained exceptional. In contrast, severe clinical CMV infections occurred in 3 patients (15%) treated by ALG. Nine of 15 patients developed rat-specific antibodies, but only 4 before the completion of LO-Tact-1 treatment, without any correlation with the further development of acute rejection. Patients who suffered rejection had lower LO-Tact-1 levels and higher soluble IL2 receptor levels during the period of infusion, suggesting the crucial importance of pharmacokinetic monitoring to adjust individual doses.
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Affiliation(s)
- C Hiesse
- Department of Nephrology, Hôpital de Bicêtre, Université Paris-Sud, Paris, France
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Droz JP, Muracciole X, Mottet N, Ould Kaci M, Vannetzel JM, Albin N, Culine S, Rodier JM, Misset JL, Mackenzie S, Cvitkovic E, Benoit G. Phase II study of oxaliplatin versus oxaliplatin combined with infusional 5-fluorouracil in hormone refractory metastatic prostate cancer patients. Ann Oncol 2003; 14:1291-8. [PMID: 12881395 DOI: 10.1093/annonc/mdg342] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND A randomized, multicenter phase II study evaluating oxaliplatin alone (OXA) and oxaliplatin-5-fluorouracil combination (OXFU) in advanced hormone-refractory prostate cancer (HRPC) patients. PATIENTS AND METHODS Metastatic, pathologically proven prostate carcinoma patients, progressing despite anti-androgen therapy, received intravenous OXA (130 mg/m(2 )over 2 h), alone or with 5-FU (1000 mg/m(2)/day, continuous intravenous infusion, days 1-4), every 3 weeks. OXA patients could receive OXFU after treatment failure. RESULTS Fifty-four patients (26 OXA, 28 OXFU) from nine centers received 269 treatment cycles (106 OXA, 163 OXFU; median 3.5 OXA or 5 OXFU cycles per patient; range 1-10 or 1-14, respectively). Patient characteristics were similar in both arms. Three partial responses (PR) occurred in 21 evaluable OXA patients [14%; 95% confidence interval (CI) 1% to 30%], and in five of 26 evaluable OXFU patients (19%; 95% CI 7% to 39%). Clinical benefit response (pain, performance status and weight changes) was assessed in 20 OXA and 22 OXFU symptomatic patients, with more responders in the OXFU arm (39% compared with 12%). Median time to progression in the OXA and OXFU arms was 2.6 and 3.4 months, and median overall survival was 9.4 and 11.4 months, respectively. Hematotoxicity was common, but mostly mild to moderate. Neutropenia was more common in OXFU than OXA patients. After oxaliplatin failure, 12 patients received 46 cycles of OXFU and one of 11 evaluable patients had a PR. CONCLUSION The objective response rate, palliation benefit, survival and manageable toxicity obtained in this heavily pretreated HRPC population with OXFU merit further study.
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Auvrignon A, Kriekoukis O, Nomdedeu S, Ouin A, Pellegrino B, Gatbois E, Tabone M, Landman Parker J, Lorthios S, Benoit G, Leverger G. CO46 Pédiatrie générale et spécialisée Apport du logiciel NOSOPED dans la surveillance des infections nosocomiales en onco-hématologie. Arch Pediatr 2003. [DOI: 10.1016/s0929-693x(03)90512-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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André T, Bossard C, Gattegno B, Plouin PF, Benoit G, Richard S. A type 2B von Hippel-Lindau family masquerading as a metastatic sporadic renal cell carcinoma. BJU Int 2003; 91:425-6. [PMID: 12603429 DOI: 10.1046/j.1464-410x.2003.04064.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- T André
- Service d'Oncologie Médicale, Hôpital Tenon, CHU de Bicêtre, France
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Yaïci ED, Rampin O, Calas A, Jestin A, McKenna KE, Leclerc P, Benoit G, Giuliano F. alpha(2a) and alpha(2c) adrenoceptors on spinal neurons controlling penile erection. Neuroscience 2003; 114:945-60. [PMID: 12379250 DOI: 10.1016/s0306-4522(02)00367-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The thoracolumbar and lumbosacral spinal cord contain respectively sympathetic and parasympathetic preganglionic neurons that supply the organs of the pelvis including the penis. These neurons are influenced by supraspinal information and receive aminergic projections from the brainstem. The presence of the alpha(1)- and alpha(2)-adrenoceptor subtypes has been demonstrated in the rat spinal cord. In this species, we looked for the presence of alpha(2a)- and alpha(2c)-adrenoceptor subtypes in the sympathetic and parasympathetic preganglionic neurons controlling erection. In adult male rats, transsynaptic axonal transport of pseudorabies virus injected into the penis was combined with immunohistochemistry against alpha(2a)- and alpha(2c)-adrenoceptor subtypes. At 4 days survival time, neurons infected with the pseudorabies virus were solely found in the intermediolateral cell column and dorsal gray commissure of segment T12-L2 and in the intermediolateral cell column of segment L6-S1. Neurons and fibers immunoreactive for alpha(2a)- and alpha(2c)-adrenoceptor subtypes were mainly present in the intermediolateral cell column, the dorsal gray commissure and the ventral horn of the T12-L2 and L5-S1 spinal cord, the dorsal horn displayed only immunoreactive fibers. Pseudorabies virus-infected neurons in the autonomic nuclei were both immunoreactive for alpha(2a)- and alpha(2c)-adrenoceptor subtypes and closely apposed by alpha(2a)- and alpha(2c)-immunoreactive fibers. The results suggest an intraspinal modulation of the noradrenergic and adrenergic control of the autonomic outflow to the penis by pre- and postsynaptic alpha(2) adrenoceptors.
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MESH Headings
- Animals
- Antibody Specificity
- Autonomic Fibers, Preganglionic/chemistry
- Autonomic Fibers, Preganglionic/physiology
- Ganglia, Parasympathetic/chemistry
- Ganglia, Parasympathetic/cytology
- Ganglia, Parasympathetic/physiology
- Ganglia, Sympathetic/chemistry
- Ganglia, Sympathetic/cytology
- Ganglia, Sympathetic/physiology
- Herpesvirus 1, Suid
- Immunohistochemistry
- Male
- Neurons/cytology
- Neurons/physiology
- Neurons/virology
- Penile Erection/physiology
- Penis/innervation
- Penis/physiology
- Rats
- Rats, Sprague-Dawley
- Receptors, Adrenergic, alpha-2/analysis
- Receptors, Adrenergic, alpha-2/immunology
- Receptors, Adrenergic, alpha-2/physiology
- Spinal Cord/chemistry
- Spinal Cord/cytology
- Spinal Cord/physiology
- Synaptic Transmission/physiology
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Affiliation(s)
- E-D Yaïci
- Groupe de Recherche en Urologie, UPRES EA 1602, Faculté de Médecine Paris-Sud, 63 rue Gabriel Péri, 94270 Le Kremlin-Bicêtre, France
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Yaïci ED, Rampin O, Tang Y, Calas A, Jestin A, Leclerc P, Benoit G, Giuliano F. Catecholaminergic projections onto spinal neurons destined to the pelvis including the penis in rat. Int J Impot Res 2002; 14:151-66. [PMID: 12058242 DOI: 10.1038/sj.ijir.3900809] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2001] [Accepted: 07/26/2001] [Indexed: 11/09/2022]
Abstract
In rats, the spinal cord contains proerectile autonomic motoneurons destined to the penile tissue and its vasculature, and somatic motoneurons destined to the perineal striated muscles. It receives dense catecholaminergic projections issued from the medulla and pons. In adult male rats, we evidenced the catecholaminergic innervation of spinal neurons controlling lower urogenital tissues and regulating penile erection. We combined retrograde tracing techniques and immunohistochemistry against synthetic enzymes of noradrenaline and adrenaline. Both sympathetic and parasympathetic preganglionic neurons, labeled from the major pelvic ganglion or from the corpus cavernosum, were apposed by catecholaminergic immunoreactive fibers. Motoneurons, retrogradely labeled from the striated muscles, were also apposed by catecholaminergic immunoreactive fibers. Synapses between these motoneurons and fibers were suggested by confocal microscopy and confirmed by electron microscopy in some cases. The results reinforce the hypothesis of a catecholaminergic control of autonomic and somatic motoneurons regulating penile erection at the spinal level.
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Affiliation(s)
- E D Yaïci
- Groupe de Recherche en Urologie, UPRES EA 1602, Faculté de Médecine Paris-Sud, Le Kremlin-Bicêtre, France
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39
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Lechevallier E, Cormier L, Barrou B, Benoit G, Bensadoun H, Boudjema K, Descottes JL, Doré B, Guy L, Malavaud B, Martin X, Petit J, Salomon L. Prostate cancer in renal transplant recipients. Transplant Proc 2002; 34:722. [PMID: 12009678 DOI: 10.1016/s0041-1345(02)02624-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Eric Lechevallier
- Renal Transplantation Committee of the French Urological Association, Hôpital Salvador, 249 Boulevard Sainte Marguerite, 13274 Marseille, France.
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40
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Mylon SE, Benoit G. Subnanomolar detection of acid-labile sulfides by the classical methylene blue method coupled to HPLC. Environ Sci Technol 2001; 35:4544-4548. [PMID: 11757614 DOI: 10.1021/es010955x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Methylene blue reactive sulfides (MBRS) are ubiquitous in surface waters of local lakes and streams. However, in most cases they exist in concentrations too low to measure by traditional methods. Both the classical methylene blue and the similar Cline method have been used to determine concentrations of a particular pool of acid-labile sulfides in aquatic systems. The estimated lowest limit of MBRS detection is ca. 10 nM under ideal conditions. By coupling the classical methylene blue method to HPLC, it is possible to make direct, reliable measurements of MBRS in fully oxygenated freshwaters. Using this modified approach, a detection limit for MBRS of ca. 0.3 nM is achieved. Measurements in a variety of local freshwaters reveal levels in the range of 0-74 nM, with systematic variations explainable in terms of standard biogeochemical characteristics.
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Affiliation(s)
- S E Mylon
- Yale School of the Environment, Yale University, New Haven, Connecticut 06511, USA.
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41
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Abstract
In France, administration of premixed 50% nitrous oxide and oxygen for procedural sedation is under close supervision by the French Drug Agency before final approval for use. We have examined the frequency of adverse events in children sedated with 50% nitrous oxide and oxygen over a broad range of non-specialised facilities. A mean of 0.33% (SD 0.10) children had major adverse events. Thus, premixed 50% nitrous oxide and oxygen seems to be a safe option for procedural sedation in children.
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Benoit G, Roussel M, Pendino F, Ségal-Bendirdjian E, Lanotte M. Orchestration of multiple arrays of signal cross-talk and combinatorial interactions for maturation and cell death: another vision of t(15;17) preleukemic blast and APL-cell maturation. Oncogene 2001; 20:7161-77. [PMID: 11704845 DOI: 10.1038/sj.onc.1204760] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Despite intensive molecular biology investigations over the past 10 years, and an important breakthrough on how PML-RARalpha, the fusion protein resulting from t(15;17), can alter RARalpha and PML functions, no definitive views on how leukemia is generated and by what mechanism(s) the normal phenotype is restored, are yet available. 'Resistances' to pharmacological levels of all-trans-retinoic acid (ATRA) have been observed in experimental in vivo and in vitro models. In this review, we emphasize the key role played by signal cross-talk for both normal and neoplastic hemopoiesis. After an overview of reported experimental data on APL-cell maturation and apoptosis, we apply our current knowledge on signaling pathways to underline those which might generate signal cross-talks. The design of biological models suitable to decipher the integration of signal cross-talks at the transcriptional level should be our first priority today, to generate some realistic therapeutic approaches After 'Ten Years of Molecular APL', we still know very little about how the disease develops and how effective medicines work.
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MESH Headings
- Apoptosis
- Bone Marrow Cells/metabolism
- Bone Marrow Cells/pathology
- Cell Differentiation
- Cell Transformation, Neoplastic/pathology
- Disease Progression
- Hematopoiesis
- Humans
- Leukemia, Promyelocytic, Acute/etiology
- Leukemia, Promyelocytic, Acute/pathology
- Leukemia, Promyelocytic, Acute/physiopathology
- Neoplasm Proteins/metabolism
- Oncogene Proteins, Fusion/metabolism
- Receptor Cross-Talk
- Receptors, Retinoic Acid/metabolism
- Retinoid X Receptors
- Signal Transduction
- Stem Cells/metabolism
- Stem Cells/pathology
- Transcription Factors/metabolism
- Translocation, Genetic
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Affiliation(s)
- G Benoit
- INSERM U-496, Hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France
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Zhu J, Heyworth CM, Glasow A, Huang QH, Petrie K, Lanotte M, Benoit G, Gallagher R, Waxman S, Enver T, Zelent A. Lineage restriction of the RARalpha gene expression in myeloid differentiation. Blood 2001; 98:2563-7. [PMID: 11588055 DOI: 10.1182/blood.v98.8.2563] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To better understand the role of retinoids in myelopoiesis, expression of the retinoid receptor genes (retinoic acid receptors [RARs] and retinoid X receptors [RXRs]) were examined during differentiation of factor-dependent cell-Paterson (FDCP)-mixA4 murine progenitor cells. The major receptor expressed in undifferentiated A4 cells was RARalpha (primarily the RARalpha1 isoform). Following induction of myelomonocytic differentiation with granulocyte and granulocyte-macrophage colony-stimulating factors, a dramatic increase in RARalpha expression (particularly the RARalpha2 isoform) was seen. In contrast, expression of both RARalpha isoforms was rapidly extinguished upon induction of erythroid differentiation with erythropoeitin (EPO). A modest induction of RXRalpha expression was seen, particularly during differentiation in the myelomonocytic lineage. Low expression levels of RARgamma2 and RXRbeta remained unchanged, irrespective of differentiation pathway. Consistent with the gene expression patterns, RARalpha agonists and antagonists stimulated myelomonocytic and erythroid differentiation of FDCP-mixA4 cells, respectively. Taken together, these results suggest that erythropoiesis and granulopoiesis require diminished and enhanced RARalpha activities, respectively, which at physiological all-trans-retinoic acid (RA) concentrations may be accomplished by reciprocal effects of EPO and myelomonocytic growth factors on its expression. This hypothesis is corroborated by data showing that RA, which positively regulates RARalpha2 expression, can exert inhibitory effects on erythroid differentiation.
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Affiliation(s)
- J Zhu
- Leukaemia Research Fund Centre and Section of Gene Function and Regulation at the Institute of Cancer Research, Chester Beatty Laboratories, London, United Kingdom
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Abstract
The conventional practice of using 0.45 or 0.40 microm membranes to distinguish between the particulate and dissolved phases in natural waters neglects the importance of colloids. Many of the colloids in natural waters pass through 0.45 or 0.40 microm membranes, but a significant fraction at the upper end of the colloidal particle size range is retained. Membrane clogging during filtration decreases the effective pore size and can cause the retention of increasing amounts of colloids. This filtration artifact can cause serious errors in sampling and in assigning trace metals to various particle size classes. We evaluated the effect of membrane loading for two common membrane types (0.45 microm Millipore Durapore and 0.40 microm Nuclepore) on the retention of colloidal Fe, Al, Mn, and OM in three Connecticut rivers. In addition, we used a 1.0 microm Nuclepore membrane to estimate the amount of colloids in the 0.40-1.0 microm size fraction that are retained by membranes during conventional filtration. All samples were collected with clean techniques, and all filtrations were carried out in a class 100 clean room. A peristaltic pump, set at an initial flow rate of 120 mL/min, was used to pump samples through 47 mm diameter inline Teflon filter holders. Back pressure and flow rate were monitored during filtration, and both are good indicators for the onset of membrane clogging. The results show a consistent correlation between increasing back pressure and decreasing concentration of colloidal Fe and sometimes Al, Mn, and OM in the filtrate for all membrane types. Although the shape of the loading-retention curves varied dramatically by site and by membrane type, the essential relationship between back pressure, flow rate, and filtration artifacts during membrane clogging remained the same.
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Affiliation(s)
- M A Morrison
- Yale School of Forestry and Environmental Studies, New Haven, Connecticut 06511, USA
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Loric S, Paradis V, Gala JL, Berteau P, Bedossa P, Benoit G, Eschwège P. Abnormal E-cadherin expression and prostate cell blood dissemination as markers of biological recurrence in cancer. Eur J Cancer 2001; 37:1475-81. [PMID: 11506953 DOI: 10.1016/s0959-8049(01)00143-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Until now, no molecular parameter has been available for predicting the metastatic potential of prostate tumours, which leaves their outcome uncertain despite an apparent benign histology or early stage. Abnormal expression of adhesion molecules, such as E-cadherin, can be contributing factors for increased invasiveness and metastatic potential. Histological analysis for E-cadherin expression was carried out on paraffin-embedded tumour tissues. Tumour metastatic potential was indirectly evaluated by detecting circulating prostate cells (CPC), using reverse transciptase-polymerase chain reaction (RT-PCR) and prostate-specific membrane antigen (PSMA) as a target. Patients were followed-up for a median of 14 months (range 10--19 months) after surgery with serum prostate-specific antigen (PSA) level measurement. Interestingly, 23 of 44 localised tumours exhibited aberrant E-cadherin expression. Prior to primary surgery, PSMA RT-PCR detected the spread of prostate cells to the blood in 24 patients. Statistical analysis showed that abnormal E-cadherin expression in the tumours was the only variable that was independently correlated with prostate cell dissemination in the blood (P<0.0001). In logistic regression analysis, abnormal E-cadherin expression was a significant independent predictor for a later biological relapse. This impaired adhesion status was clearly correlated with a haematogenous spread of the primary tumour cells. It could therefore be an objective way to restrict the indications for radical surgery to patients not presenting with this feature.
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Affiliation(s)
- S Loric
- Biochemistry A Laboratory, Saint-Antoine AP-HP University Hospital, 184 ru du Faubourg, Saint-Antoine, 75012 Paris, France.
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Blanchet P, Droupy S, Eschwege P, Viellefond A, Paradis V, Pichon MF, Jardin A, Benoit G. Prospective evaluation of Ki-67 labeling in predicting the recurrence and progression of superficial bladder transitional cell carcinoma. Eur Urol 2001; 40:169-75. [PMID: 11528194 DOI: 10.1159/000049768] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
PURPOSE We studied a series of superficial transitional cell carcinoma of the bladder to assess whether the Ki-67 labeling index predicts recurrence and progression in a cohort of patients treated by transurethral resection alone or receiving adjuvant intravesical bacillus Calmette-Guerin therapy (BCG). MATERIALS AND METHODS From 1989 to 1990, we prospectively studied 70 consecutive cases of superficial transitional cell carcinoma of the bladder using Ki-67 immunostaining. The tumors were 43 pTa and 27 pTl. Thirteen were treated with transurethral resection only and 57 received adjuvant intravesical BCG. The median follow-up times was 64 months. The threshold index values of Ki-67 for recurrence and progression were determined using ROC curves. The relative predictive values of the Ki-67 labeling index and tumor characteristics for recurrence and progression were evaluated using Cox's proportional hazards model. RESULTS A cutoff value of 13% was determined. The recurrence free survival rate at 5 years was 68% for cases with a Ki-67 labeling index of 13 or higher and 71% for those with an index of less than 13 (NS). The progression-free survival rate at 5 years was 43% in cases with an index of 13 or higher and 89% in those with an index of less than 13 (p<0.0001). Using multivariate analysis the Ki-67 labeling index is an independent risk factor for tumor progression with a relative risk of 4.61 (p<0.05). CONCLUSION When BCG is used for high and intermediate risk superficial bladder cancers, the Ki-67 labeling index is an independent predictive factor of progression but not of recurrence.
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Affiliation(s)
- P Blanchet
- Department of Urology, University School of Medicine and Bicêtre Hospital, Bicêtre, France
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Giuliano F, Allard J, Rampin O, Droupy S, Benoit G, Alexandre L, Bernabe J. Spinal proerectile effect of apomorphine in the anesthetized rat. Int J Impot Res 2001; 13:110-5. [PMID: 11426350 DOI: 10.1038/sj.ijir.3900654] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2000] [Accepted: 02/01/2001] [Indexed: 12/31/2022]
Abstract
Considering the presence of dopaminergic receptors in the lumbosacral spinal cord, we tested whether apomorphine could exert a proerectile effect by acting at the spinal level. Intracavernous (ICP) and blood pressures (BP) were measured in anesthetized rats. ICP rises were quantified (duration, percentage of ICPmaximum/meanBP (ICPmax/BPx100), area under ICP curve (AUC/BP) and sum of AUC/BP after intravenous (i.v.) and intrathecal (i.t.) injections of apomorphine alone or in presence of i.t. oxytocin (10 ng). Both 10 and 30 microg i.v. apomorphine dosings elicited erectile events evidenced by ICP rises. Upon the 30 microg i.v. injection, duration of ICP rises were increased from 25+/-10 to 69+/-18 s (P<0.001), ICPmax/BPx100 from 21+/-3 to 50+/-14% (P=0.001), AUC/BP from 3+/-1 to 14+/-6 s (P=0.002) and sum of AUC/BP from 5+/-7 to 34+/-35 s (P=0.021). Upon 30 microg i.t. injections of apomorphine at the lumbosacral level, the number of ICP rises was increased from 0.2+/-0.4 to 3.0+/-1.5, ICPmax/BPx100 from 16+/-9 to 43+/-12 and sum of AUC/BP from 1+/-3 to 31+/-15 s compared to vehicle injection (P<0.05 for all parameters). Injection of 30 microg i.v. or i.t. apomorphine non-significantly enhanced the number and amplitude of the ICP rises induced by 10 ng i.t. oxytocin. However, the enhancement of the amplitude of the ICP rises elicited by i.t. oxytocin was more pronounced with i.t. apomorphine than with i.v. apomorphine. These results suggest the existence of a spinal site of action for apomorphine which may (1) participate to generation of erection and (2) exerts a facilitator effect on erection of supraspinal origin.
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Affiliation(s)
- F Giuliano
- Groupe de Recherche en Urologie, UPRES, 1602 EA, Medical University of Paris South, France.
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Abstract
INTRODUCTION Postoperative bacteriuria is a frequent event after transurethral resection of the prostate, despite the use of prophylactic antibiotics. Certain risk factors have been clearly established (preoperative urinary catheter or bacteriuria, operating time), while others remain uncertain. MATERIALS AND METHODS We conducted a prospective study in five urology centers, including non-catheterized patients with sterile preoperative urine undergoing transurethral resection of the prostate for benign prostatic hyperplasia. All received antibiotic prophylaxis with cefamandole. The incidence of bacteriuria and its risk factors were investigated. RESULTS The postoperative bacteriuria rate was 26% (26/101), with 8% on removal of the catheter, 14% between the 7th and 10th postoperative days and 5% 1 month postoperatively. Factors associated with bacteriuria on univariate analysis were: operating time, disconnection of the closed urine drainage system and postoperative catheterization > or =3 days. Two variables were associated on multivariate analysis (logistic regression): operating time >52 min (odds ratio 9.0, 95% confidence interval 2.1-39.0) and disconnection of the closed urine drainage system (odds ratio 26.3, 95% confidence interval 6.1; 6.1-113). CONCLUSIONS The postoperative bacteriuria rate after transurethral resection of the prostate was high in this study, raising the question of the choice and/or duration of prophylactic antibiotics. Prevention of postoperative bacteriuria must be based on careful hemostasis, prevention of postoperative catheter disconnections, and limitation of the duration of postoperative catheterization.
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Affiliation(s)
- A Colau
- Service d'Urologie, CHU Saint-Louis, 1, avenue Cladue Vellefaux, F-75010 Paris, France
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Tasu JP, Geffroy D, Rocher L, Eschwege P, Strohl D, Benoit G, Paradis V, Bléry M. Primary malignant lymphoma of the urinary bladder: report of three cases and review of the literature. Eur Radiol 2001; 10:1261-4. [PMID: 10939486 DOI: 10.1007/s003300000343] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report three cases of a primary malignant lymphoma of the urinary bladder. The radiological features revealed a sessile mass of the lateral wall for one case, a circumferential thickening in the second, and two separated masses of the bladder wall in the last case. Primary malignant lymphoma of the urinary bladder is extremely rare. From a review of the literature, the clinical and radiological findings are discussed. In this paper we report the first case of urinary bladder lymphoma presented on CTas multiple masses.
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Affiliation(s)
- J P Tasu
- Department of Radiology, Bicêtre Hospital, Le Kremlin-Bicêtre, France
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Ammor M, Creput C, Durrbach A, Samuel D, Von Ey F, Hiesse C, Droupy S, Kriaa F, Kreis H, Benoit G, Blanchet P, Bismuth H, Charpentier B. Mortality and long term outcome of combined liver and kidney transplantations. Transplant Proc 2001; 33:1179-80. [PMID: 11267246 DOI: 10.1016/s0041-1345(00)02450-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- M Ammor
- Services d'Urologie et de Néphrologie, Le Kremlin-Bicêtre, France
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