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Perrot L, Boyer L, Flipo RM, Marotte H, Pertuiset E, Miceli Richard C, Thomas T, Seror R, Chazerain P, Nicolas R, Richez C, Pham T. OP0254 FACTORS ASSOCIATED WITH THE SEVERITY OF COVID-19 INFECTION IN PATIENTS WITH SPONDYLOARTHRITIS: RESULTS OF THE FRENCH RMD COVID-19 COHORT. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.4237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundTo our knowledge, no published work has described precisely the severity and evolution of SARS-CoV-2 infection in patients with spondyloarthritis (SpA). Data on COVID-19 from cohorts of patients with immune-mediated inflammatory diseases concern small samples of SpA.ObjectivesOur objective was to describe the severity and course of COVID-19 in a large cohort of patients with SpA, including axial SpA (axSpA) and psoriatic arthritis (PsA), and to identify factors associated with severe forms.MethodsPatients: individuals with Spondyloarthritis (SpA) from the French RMD COVID-19 cohort (observational, national, multicenter cohort) with a diagnosis of COVID-19 (clinical, PCR, CT or serology) were included.Data collected: demographics, type of SpA, comorbidities, treatments, severity of COVID-19. Severity of COVID-19 was graded according to care needed: mild = outpatient care; moderate = non-intensive hospital treatment; severe = intensive care unit admission or death; severe = moderate or severe.Statistical analyses: Logistic regression models were used to identify factors associated with these severe forms. All variables with p <0.20 in the univariate analysis were proposed in the multivariate model. Treatment variables (non-steroidal anti-inflammatory drugs (NSAIDs), methotrexate (MTX), sulfasalazine (SLZ), TNF inhibitors (TNFi), IL-17 inhibitors (IL-17i) and IL-23p19/p40 inhibitors (IL-23p19/p40i)) were included in the models, even if p≥0.20.ResultsBetween March 2020 and April 2021, 626 SpAs reported COVID-19 with a mild course in 508 cases (81.1%), moderate in 93 cases (14.8%), and severe in 25 cases (3.9%), including 6 deaths.The cohort analyzed included 349 women (55.8%), mean age 49.3 ± 14.1 years, mean BMI 27.1 ± 5.4 with 403 axSpA (64.4%), 187 PsA (29.9%) and 36 other SpA, duration of disease 11.3 ± 9.8 years; 352 (56.2%) had at least one comorbidity, of which obesity (23.6%), hypertension (15.5%), and smoking (10.4%) were the most frequent. Among them, 104 were treated with NSAIDs (16.6%), 186 with conventional synthetic disease-modifying antirheumatic drugs (DMARDs) including 156 MTX, and 460 (73.5%) with biological DMARDs (379 TNFi, 57 IL-17i, 15 IL-23p19/p40i, 9 others).The following variables were associated with severe COVID-19 outcomes: age, body mass index, chronic obstructive lung disease, cardiovascular disease, diabetes, hypertension, interstitial lung disease, renal failure, and corticosteroids intake.The factors independently associated with severe COVID-19 outcomes were corticosteroid intake (3.15 [CI95%: 1.46-6.76], p 0.004), and age (OR=1.06 [CI95%: 1.04-1.08], p <0.001] while anti-TNF (OR=0.26 [CI95%: 0.09-0.78], p=0.01]) was protective. NSAIDs intake (OR=0.97 [CI95%: 0.48-1.98]), SLZ (OR=7.9 [CI95%: 0.60-103]), or anti-IL17 (OR=0.37 [CI95%: 0.10-1.31]) was not associated with infection severity.ConclusionThe course of COVID-19 was mild for the majority of SpA patients (81.1%). Corticosteroid intake was associated with more severe COVID-19 outcomes, whereas TNFi were found to be protective.Disclosure of InterestsNone declared
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Perrot L, Boyer L, Flipo R, Marotte H, Pertuiset E, Miceli Richard C, Thomas T, Seror R, Chazerain P, Roux N, Richez C, Pham T. Facteurs associés à la sévérité de l’infection COVID-19 chez les patients atteints de spondyloarthrite : résultats de la French RMD COVID-19 cohorte. Revue du Rhumatisme 2021. [PMCID: PMC8626120 DOI: 10.1016/j.rhum.2021.10.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Introduction Il n’y a pas, à notre connaissance, de publication décrivant précisément la sévérité et l’évolution de l’infection à SARS-CoV-2 dans la spondyloarthrite (SpA). Les données sur la COVID-19 issues des cohortes de patients avec maladies inflammatoires à médiation immunitaire concernent de faibles effectifs de SpA. Notre objectif était de décrire la sévérité et l’évolution de la COVID-19 dans une large cohorte de patients atteints de SpA (SpA axiale et rhumatisme psoriasique) et d’identifier les facteurs associés aux formes sévères. Patients et méthodes Patients : spondyloarthrites (SpA) de la French RMD COVID-19 cohort (cohorte observationnelle, nationale, multicentrique) avec un diagnostic de COVID-19 (clinique, PCR, scanner ou sérologie). Données collectées : démographiques, type de SpA, comorbidités, traitements, gravité de la COVID-19. La gravité de la COVID-19 a été classée en fonction des soins nécessaires : bénin = soins ambulatoires ; modéré = traitement hospitalier non intensif ; sévère = admission en unité de soins intensifs ou décès ; grave = modéré ou sévère. Analyses statistiques : des modèles de régression logistique ont été utilisés pour identifier les facteurs associés à ces formes graves. Toutes les variables avec p < 0,20 en analyse univariée ont été proposées dans le modèle multivarié. Les variables de traitement (AINS, méthotrexate [MTX], sulfasalazine [SLZ], anti-TNF et anti-IL17) étaient incluses dans les modèles, même si p ≥ 0,20. Résultats Entre mars 2020 et avril 2021, 626 SpA ont déclaré une COVID-19 dont l’évolution avait été bénigne dans 508 cas (81,1 %), modérée dans 93 cas (14,8 %) et sévère dans 25 cas (3,9 %), dont 6 décès. La cohorte analysée comprenait 349 femmes (55,8 %), âge moyen 49,3 ± 14,1 ans, IMC moyen 27,1 ± 5,4 avec 403 SpA axiale (64,4 %), 187 RPso (29,9 %) et 36 autres SpA, durée de la maladie 11,3 ± 9,8 ans ; 352 (56,2 %) avaient au moins une comorbidité dont l’obésité (23,6 %), l’hypertension artérielle (15,5 %) et le tabagisme (10,4 %) étaient les plus fréquentes. Parmi eux, 104 étaient traités par AINS (16,6 %), 186 par csDMARD dont 156 méthotrexate, et 460 (73,5) % par biomédicaments (379 anti-TNF, 57 anti-IL17 : 57, 15 anti-IL12/23, 9 autres). Les facteurs indépendamment associés à une COVID-19 grave étaient la corticothérapie (OR = 2,83 [IC95 % : 1,41–5,66]) et l’âge (OR = 1,07 [1,05–1,09]) alors le genre féminin (OR = 0,64 [0,41–0,99]) et les anti-IL17 (OR = 0,51 [0,32–0,81]) avaient un caractère protecteur. Un traitement par AINS (OR = 0,91 [IC95 % : 0,47–1,77]), par sulfasalazine (OR = 6,81 [0,59–77,41]) ou par anti-TNF (OR = 0,67 [0,33–1,35]) n’était pas associé à la gravité de l’infection. Conclusion L’évolution de la COVID-19 a été bénigne pour la majorité des patients atteints de SpA (81,1 %). La corticothérapie était associée à des infections plus graves alors que les anti-IL17 avaient un caractère protecteur.
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Renard D, Richaud C, Perrot L, Charles P. Une pneumopathie guérie par hydroxychloroquine. Rev Mal Respir 2020; 37:602-605. [DOI: 10.1016/j.rmr.2020.06.007] [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] [Received: 04/12/2020] [Accepted: 06/15/2020] [Indexed: 11/26/2022]
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Stern JB, Vieira T, Perrot L, Lefevre M, Sayah MI, Girard P, Caliandro R. [The role of electromagnetic navigation bronchoscopy in the diagnosis of peripheral pulmonary lesions]. Rev Mal Respir 2019; 36:946-954. [PMID: 31522946 DOI: 10.1016/j.rmr.2019.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 02/27/2019] [Accepted: 06/06/2019] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Electromagnetic navigation bronchoscopy (ENB) is a recent, minimally invasive procedure utilized to guide endoscopic diagnostic tools to peripheral pulmonary nodules. The place of this technology among other diagnostic procedures remains uncertain. METHOD We analyzed our 30 first months of ENB used in the diagnosis of 106 lesions in 101 patients, from June 2016 to December 2018. Follow-up and final diagnosis was completed for 95 lesions (90%). RESULTS ENB was performed for 3.5% of all patients referred for abnormal findings on pulmonary imaging, and represented 19% of second line procedures for peripheral pulmonary lesions. Procedures were performed under general anesthesia, with a mean duration of 35min. The sensitivity of ENB was 64% (95%CI: 52-74%) for lesions with a mean diameter of 21mm, with an improvement over time (sensitivity 69% in the last 18 months). The presence of a bronchus within the lesion (bronchus sign) was associated with an increased sensitivity of 74%. Pneumothorax occurred in 5 patients (5%) of which 4 required drainage. There was no hemoptysis, and no death related to the procedure. CONCLUSION ENB is a minimally invasive procedure reaching acceptable sensitivity in the most difficult patients. ENB can be recommended for the diagnosis of peripheral pulmonary nodules when no other procedure is successful or possible. Its use as a first choice procedure is, for the moment, limited by the cost, but must be weighed against that of non-diagnostic procedures, and the cost of complications of trans-thoracic lung biopsies.
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Affiliation(s)
- J-B Stern
- Service de pneumologie, Institut mutualiste Montsouris, Institut du thorax Curie-Montsouris, 42, boulevard Jourdan, 75014 Paris, France.
| | - T Vieira
- Service de pneumologie, Institut mutualiste Montsouris, Institut du thorax Curie-Montsouris, 42, boulevard Jourdan, 75014 Paris, France
| | - L Perrot
- Service de pneumologie, Institut mutualiste Montsouris, Institut du thorax Curie-Montsouris, 42, boulevard Jourdan, 75014 Paris, France
| | - M Lefevre
- Département d'anatomie pathologique, Institut mutualiste Montsouris, Institut du thorax Curie-Montsouris, 42, boulevard Jourdan, 75014 Paris, France
| | - M-I Sayah
- Service de pneumologie, Institut mutualiste Montsouris, Institut du thorax Curie-Montsouris, 42, boulevard Jourdan, 75014 Paris, France
| | - P Girard
- Service de pneumologie, Institut mutualiste Montsouris, Institut du thorax Curie-Montsouris, 42, boulevard Jourdan, 75014 Paris, France
| | - R Caliandro
- Service de pneumologie, Institut mutualiste Montsouris, Institut du thorax Curie-Montsouris, 42, boulevard Jourdan, 75014 Paris, France
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Perrot L, Greil A, Farigon N, Costes F, Caillaud D, Mulliez A, Boirie Y. Réversibilité possible de la sarcopénie chez des patients porteurs de BPCO. NUTR CLIN METAB 2019. [DOI: 10.1016/j.nupar.2019.01.245] [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: 11/30/2022]
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Perrot L, Greil A, Farigon N, Boirie Y, Costes F, Mulliez A, Caillaud D. Prévalence de la sarcopénie chez des patients obstructifs chroniques hospitalisés en pneumologie au CHU de Clermont-Ferrand. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.125] [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: 10/27/2022]
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Ledoux X, Aïche M, Avrigeanu M, Avrigeanu V, Balanzat E, Ban-d'Etat B, Ban G, Bauge E, Bélier G, Bém P, Borcea C, Caillaud T, Chatillon A, Czajkowski S, Dessagne P, Doré D, Fischer U, Frégeau MO, Grinyer J, Guillous S, Gunsing F, Gustavsson C, Henning G, Jacquot B, Jansson K, Jurado B, Kerveno M, Klix A, Landoas O, Lecolley FR, Lecouey JL, Majerle M, Marie N, Materna T, Mrázek J, Novák J, Oberstedt S, Oberstedt A, Panebianco S, Perrot L, Plompen AJM, Pomp S, Prokofiev AV, Ramillon JM, Farget F, Ridikas D, Rossé B, Serot O, Simakov SP, Šimecková E, Stanoiu M, Štefánik M, Sublet JC, Taïeb J, Tarrío D, Tassan-Got L, Thfoin I, Varignon C. The Neutrons for Science Facility at SPIRAL-2. Radiat Prot Dosimetry 2018; 180:115-119. [PMID: 29177426 DOI: 10.1093/rpd/ncx257] [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] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Indexed: 06/07/2023]
Abstract
The neutrons for science (NFS) facility is a component of SPIRAL-2, the new superconducting linear accelerator built at GANIL in Caen (France). The proton and deuteron beams delivered by the accelerator will allow producing intense neutron fields in the 100 keV-40 MeV energy range. Continuous and quasi-mono-kinetic energy spectra, respectively, will be available at NFS, produced by the interaction of a deuteron beam on a thick Be converter and by the 7Li(p,n) reaction on thin converter. The pulsed neutron beam, with a flux up to two orders of magnitude higher than those of other existing time-of-flight facilities, will open new opportunities of experiments in fundamental research as well as in nuclear data measurements. In addition to the neutron beam, irradiation stations for neutron-, proton- and deuteron-induced reactions will be available for cross-sections measurements and for the irradiation of electronic devices or biological cells. NFS, whose first experiment is foreseen in 2018, will be a very powerful tool for physics, fundamental research as well as applications like the transmutation of nuclear waste, design of future fission and fusion reactors, nuclear medicine or test and development of new detectors.
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Affiliation(s)
- X Ledoux
- GANIL, Bd Henri Becquerel, BP 55027, Caen Cedex 05, France
| | - M Aïche
- CENBG, 19 Chemin du Solarium, CS 10120, Gradignan, France
| | - M Avrigeanu
- NIPNE, Str. Reactorului no.30, PO Box MG-6, Bucharest-Magurele, Romania
| | - V Avrigeanu
- NIPNE, Str. Reactorului no.30, PO Box MG-6, Bucharest-Magurele, Romania
| | - E Balanzat
- CIMAP, Bd Henri Becquerel, BP 5133, Caen Cedex 05, France
| | - B Ban-d'Etat
- CIMAP, Bd Henri Becquerel, BP 5133, Caen Cedex 05, France
| | - G Ban
- LPC, 6 Bd du Maréchal Juin, Caen Cedex, France
| | - E Bauge
- CEA/DAM/DIF, Arpajon, France
| | | | - P Bém
- NPI, CZ-250 68 Rež, Czech Republic
| | - C Borcea
- NIPNE, Str. Reactorului no.30, PO Box MG-6, Bucharest-Magurele, Romania
| | | | | | - S Czajkowski
- CENBG, 19 Chemin du Solarium, CS 10120, Gradignan, France
| | - P Dessagne
- Université de Strasbourg, CNRS, IPHC, UMR7178, 23 rue du loess, BP 28, Strasbourg Cedex 2, France
| | - D Doré
- CEA/DSM/IRFU/SPhN, Université Paris-Saclay, Gif-sur-Yvette, France
| | - U Fischer
- KIT, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany
| | - M O Frégeau
- GANIL, Bd Henri Becquerel, BP 55027, Caen Cedex 05, France
| | - J Grinyer
- GANIL, Bd Henri Becquerel, BP 55027, Caen Cedex 05, France
| | - S Guillous
- CIMAP, Bd Henri Becquerel, BP 5133, Caen Cedex 05, France
| | - F Gunsing
- CEA/DSM/IRFU/SPhN, Université Paris-Saclay, Gif-sur-Yvette, France
| | | | - G Henning
- Université de Strasbourg, CNRS, IPHC, UMR7178, 23 rue du loess, BP 28, Strasbourg Cedex 2, France
| | - B Jacquot
- GANIL, Bd Henri Becquerel, BP 55027, Caen Cedex 05, France
| | - K Jansson
- Uppsala University, Box 256, Uppsala, Sweden
| | - B Jurado
- CENBG, 19 Chemin du Solarium, CS 10120, Gradignan, France
| | - M Kerveno
- Université de Strasbourg, CNRS, IPHC, UMR7178, 23 rue du loess, BP 28, Strasbourg Cedex 2, France
| | - A Klix
- KIT, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany
| | | | | | - J L Lecouey
- LPC, 6 Bd du Maréchal Juin, Caen Cedex, France
| | | | - N Marie
- LPC, 6 Bd du Maréchal Juin, Caen Cedex, France
| | - T Materna
- CEA/DSM/IRFU/SPhN, Université Paris-Saclay, Gif-sur-Yvette, France
| | - J Mrázek
- NPI, CZ-250 68 Rež, Czech Republic
| | - J Novák
- NPI, CZ-250 68 Rež, Czech Republic
| | - S Oberstedt
- European Commission, Joint Research Centre, Geel, Belgium
| | - A Oberstedt
- ELI-NP, Str. Reactorului no.30, PO Box MG-6, Bucharest-Magurele, Romania
| | - S Panebianco
- CEA/DSM/IRFU/SPhN, Université Paris-Saclay, Gif-sur-Yvette, France
| | - L Perrot
- IPNO, 15 rue Georges Clémenceau, Osay, France
| | - A J M Plompen
- European Commission, Joint Research Centre, Geel, Belgium
| | - S Pomp
- Uppsala University, Box 256, Uppsala, Sweden
| | | | - J M Ramillon
- CIMAP, Bd Henri Becquerel, BP 5133, Caen Cedex 05, France
| | - F Farget
- GANIL, Bd Henri Becquerel, BP 55027, Caen Cedex 05, France
| | - D Ridikas
- CEA/DSM/IRFU/SPhN, Université Paris-Saclay, Gif-sur-Yvette, France
| | - B Rossé
- CEA/DAM/DIF, Arpajon, France
| | - O Serot
- CEA/DEN, CEA Cadarache, St Paul lez Durance Cedex, France
| | - S P Simakov
- KIT, Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, Germany
| | | | - M Stanoiu
- NIPNE, Str. Reactorului no.30, PO Box MG-6, Bucharest-Magurele, Romania
| | | | - J C Sublet
- Culham Centre for Fusion Energy, Abingdon, Oxfordshire, UK
| | - J Taïeb
- CEA/DAM/DIF, Arpajon, France
| | - D Tarrío
- Uppsala University, Box 256, Uppsala, Sweden
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Meyer A, de Séréville N, Hammache F, Adsley P, Assié M, Beaumel D, Delafosse C, Flavigny F, Georgiadou A, Gottardo A, Grassi L, Guillot J, Id Barkach T, MacCormick M, Matea I, Olivier L, Perrot L, Portail C, Stefan I, Parikh A, Coc A, Kiener J, Tatischeff V, Laird AM, Fox SP, Hubbard N, Riley J, De Oliveira F, Bastin B, Béroff K, Sánchez Benítez ÁM, Alellara A, Assunção M, Guimaraes V, Oulebsir N, D’Agata G. Study of key resonances in the 30P( p,γ) 31S reaction in classical novae. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818402010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Among reactions with strong impact on classical novae model predictions, 30P(p,γ)31S is one of the few remained that are worthy to be measured accurately, because of their rate uncertainty, as like as 18F(p,α)15O and 25Al(pγ)26Si. To reduce the nuclear uncertainties associated to this reaction, we performed an experiment at ALTO facility of Orsay using the 31P(3He,t)31S reaction to populate 31S excited states of astrophysical interest and detect in coincidence the protons coming from the decay of the populated states in order to extract the proton branching ratios. After a presentation of the astrophysical context of this work, the current situation of the 30P(p,γ)31S reaction rate will be discussed. Then the experiment set-up of this work and the analysis of the single events will be presented.
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Ledoux X, Aïche M, Avrigeanu M, Avrigeanu V, Balanzat E, Ban-d'Etat B, Ban G, Bauge E, Bélier G, Bém P, Borcea C, Caillaud T, Chatillon A, Czajkowski S, Dessagne P, Doré D, Fischer U, Frégeau M, Grinyer J, Guillous S, Gunsing F, Gustavsson C, Henning G, Jacquot B, Jansson K, Jurado B, Kerveno M, Klix A, Landoas O, Lecolley F, Lecouey J, Majerle M, Marie N, Materna T, Mrázek J, Negoita F, Novák J, Oberstedt S, Oberstedt A, Panebianco S, Perrot L, Plompen A, Pomp S, Prokofiev A, Ramillon J, Farget F, Ridikas D, Rossé B, Sérot O, Simakov S, Šimečková E, Štefánik M, Sublet J, Taïeb J, Tarrío D, Tassan-Got L, Thfoin I, Varignon C. The neutrons for science facility at SPIRAL-2. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714603003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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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Dupont E, Otuka N, Cabellos O, Aberle O, Aerts G, Altstadt S, Alvarez H, Alvarez-Velarde F, Andriamonje S, Andrzejewski J, Audouin L, Bacak M, Badurek G, Balibrea J, Barbagallo M, Barros S, Baumann P, Bécares V, Bečvář F, Beinrucker C, Belloni F, Berthier B, Berthoumieux E, Billowes J, Boccone V, Bosnar D, Brown A, Brugger M, Caamaño M, Calviani M, Calviño F, Cano-Ott D, Capote R, Cardella R, Carrapiço C, Casanovas A, Castelluccio D, Cennini P, Cerutti F, Chen Y, Chiaveri E, Chin M, Colonna N, Cortés G, Cortés-Giraldo M, Cosentino L, Couture A, Cox J, Damone L, David S, Deo K, Diakaki M, Dillmann I, Domingo-Pardo C, Dressler R, Dridi W, Duran I, Eleftheriadis C, Embid-Segura M, Fernández-Domínguez B, Ferrant L, Ferrari A, Ferreira P, Finocchiaro P, Fraval K, Frost R, Fujii K, Furman W, Ganesan S, Garcia A, Gawlik A, Gheorghe I, Gilardoni S, Giubrone G, Glodariu T, Göbel K, Gomez-Hornillos M, Goncalves I, Gonzalez-Romero E, Goverdovski A, Gramegna F, Griesmayer E, Guerrero C, Gunsing F, Gurusamy P, Haight R, Harada H, Heftrich T, Heil M, Heinitz S, Hernández-Prieto A, Heyse J, Igashira M, Isaev S, Jenkins D, Jericha E, Kadi Y, Kaeppeler F, Kalamara A, Karadimos D, Karamanis D, Katabuchi T, Kavrigin P, Kerveno M, Ketlerov V, Khryachkov V, Kimura A, Kivel N, Kokkoris M, Konovalov V, Krtička M, Kroll J, Kurtulgil D, Lampoudis C, Langer C, Leal-Cidoncha E, Lederer C, Leeb H, Naour CL, Lerendegui-Marco J, Leong L, Licata M, Meo SL, Lonsdale S, Losito R, Lozano M, Macina D, Manousos A, Marganiec J, Martinez T, Marrone S, Masi A, Massimi C, Mastinu P, Mastromarco M, Matteucci F, Maugeri E, Mazzone A, Mendoza E, Mengoni A, Milazzo P, Mingrone F, Mirea M, Mondelaers W, Montesano S, Moreau C, Mosconi M, Musumarra A, Negret A, Nolte R, O’Brien S, Oprea A, Palomo-Pinto F, Pancin J, Paradela C, Patronis N, Pavlik A, Pavlopoulos P, Perkowski J, Perrot L, Pigni M, Plag R, Plompen A, Plukis L, Poch A, Porras I, Praena J, Pretel C, Quesada J, Radeck D, Rajeev K, Rauscher T, Reifarth R, Riego A, Robles M, Roman F, Rout P, Rudolf G, Rubbia C, Rullhusen P, Ryan J, Sabaté-Gilarte M, Salgado J, Santos C, Sarchiapone L, Sarmento R, Saxena A, Schillebeeckx P, Schmidt S, Schumann D, Sedyshev P, Smith A, Sosnin N, Stamatopoulos A, Stephan C, Suryanarayana S, Tagliente G, Tain J, Tarifeño-Saldivia A, Tarrío D, Tassan-Got L, Tavora L, Terlizzi R, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Versaci R, Vermeulen M, Villamarin D, Vicente M, Vlachoudis V, Vlastou R, Voss F, Wallner A, Walter S, Ware T, Warren S, Weigand M, Weiß C, Wolf C, Wiesher M, Wisshak K, Woods P, Wright T, Žugec P. Dissemination of data measured at the CERN n_TOF facility. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714607002] [Citation(s) in RCA: 2] [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] [Indexed: 11/14/2022] Open
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Karamanis D, Petit M, Andriamonje S, Barreau G, Bercion M, Billebaud A, Blank B, Czajkowski S, Moral RD, Giovinazzo J, Lacoste V, Marchand C, Perrot L, Pravikoff M, Thomas JC. Neutron Radiative Capture Cross Section of232Th in the Energy Range from 0.06 to 2 MeV. NUCL SCI ENG 2017. [DOI: 10.13182/nse01-a2238] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - M. Petit
- CEN Bordeaux-Gradignan, 33175 Gradignan, France
| | | | - G. Barreau
- CEN Bordeaux-Gradignan, 33175 Gradignan, France
| | - M. Bercion
- CEN Bordeaux-Gradignan, 33175 Gradignan, France
| | | | - B. Blank
- CEN Bordeaux-Gradignan, 33175 Gradignan, France
| | | | | | | | | | - C. Marchand
- CEN Bordeaux-Gradignan, 33175 Gradignan, France
| | - L. Perrot
- ISN Grenoble, 38026 Grenoble, France
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12
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Perrot L, Billebaud A, Brissot R, Giorni A, Heuer D, Loiseaux JM, Méplan O, Viano JB. Precise Validation of Database (n,γ) Cross Sections Using a Lead-Slowing-Down Spectrometer and Simulation from 0.1 eV to 30 keV: Methodology and Data for a Few Elements. NUCL SCI ENG 2017. [DOI: 10.13182/nse03-a2349] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- L. Perrot
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
| | - A. Billebaud
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
| | - R. Brissot
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
| | - A. Giorni
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
| | - D. Heuer
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
| | - J.-M. Loiseaux
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
| | - O. Méplan
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
| | - J.-B. Viano
- Institut des Sciences Nucléaires, IN2P3-CNRS/UJF 53, av. des Martyrs, F-38026 Grenoble, Cedex, France
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13
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Abstract
Colonic volvulus is the third leading cause of colonic obstruction worldwide, occurring at two principal locations: the sigmoid colon and cecum. In Western countries, sigmoid volvulus preferentially affects elderly men whereas cecal volvulus affects younger women. Some risk factors, such as chronic constipation, high-fiber diet, frequent use of laxatives, personal past history of laparotomy and anatomic predispositions, are common to both locations. Clinical symptomatology is non-specific, including a combination of abdominal pain, gaseous distention, and bowel obstruction. Abdominopelvic computerized tomography is currently the gold standard examination, allowing positive diagnosis as well as detection of complications. Specific management depends on the location, patient comorbidities and colonic wall viability, but treatment is an emergency in every case. If clinical or radiological signs of gravity are present, emergency surgery is mandatory, but is associated with high morbidity and mortality rates. For sigmoid volvulus without criteria of gravity, the ideal strategy is an endoscopic detorsion procedure followed, within 2 to 5 days, by surgery that includes a sigmoid colectomy with primary anastomosis. Exclusively endoscopic therapy must be reserved for patients who are at excessive risk for surgical intervention. In cecal volvulus, endoscopy has no role and surgery is the rule.
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Affiliation(s)
- L Perrot
- Service de chirurgie viscérale et digestive, centre hospitalier régional et universitaire, avenue de la Côte-de-Nacre, 14000 Caen, France.
| | - A Fohlen
- Service de radiologie, centre hospitalier régional et universitaire, avenue de la Côte-de-Nacre, 14000 Caen, France
| | - A Alves
- Service de chirurgie viscérale et digestive, centre hospitalier régional et universitaire, avenue de la Côte-de-Nacre, 14000 Caen, France
| | - J Lubrano
- Service de chirurgie viscérale et digestive, centre hospitalier régional et universitaire, avenue de la Côte-de-Nacre, 14000 Caen, France
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14
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Diakaki M, Audouin L, Berthoumieux E, Calviani M, Colonna N, Dupont E, Duran I, Gunsing F, Leal-Cidoncha E, Le Naour C, Leong L, Mastromarco M, Paradela C, Tarrio D, Tassan-Got L, Aerts G, Altstadt S, Alvarez H, Alvarez-Velarde F, Andriamonje S, Andrzejewski J, Badurek G, Barbagallo M, Baumann P, Becares V, Becvar F, Belloni F, Berthier B, Billowes J, Boccone V, Bosnar D, Brugger M, Calvino F, Cano-Ott D, Capote R, Carrapiço C, Cennini P, Cerutti F, Chiaveri E, Chin M, Cortes G, Cortes-Giraldo M, Cosentino L, Couture A, Cox J, David S, Dillmann I, Domingo-Pardo C, Dressler R, Dridi W, Eleftheriadis C, Embid-Segura M, Ferrant L, Ferrari A, Finocchiaro P, Fraval K, Fujii K, Furman W, Ganesan S, Garcia A, Giubrone G, Gomez-Hornillos M, Goncalves I, Gonzalez-Romero E, Goverdovski A, Gramegna F, Griesmayer E, Guerrero C, Gurusamy P, Haight R, Heil M, Heinitz S, Igashira M, Isaev S, Jenkins D, Jericha E, Kadi Y, Kaeppeler F, Karadimos D, Karamanis D, Kerveno M, Ketlerov V, Kivel N, Kokkoris M, Konovalov V, Krticka M, Kroll J, Lampoudis C, Langer C, Lederer C, Leeb H, Lo Meo S, Losito R, Lozano M, Manousos A, Marganiec J, Martinez T, Marrone S, Massimi C, Mastinu P, Mendoza E, Mengoni A, Milazzo P, Mingrone F, Mirea M, Mondelaers W, Moreau C, Mosconi M, Musumarra A, O’Brien S, Pancin J, Patronis N, Pavlik A, Pavlopoulos P, Perkowski J, Perrot L, Pigni M, Plag R, Plompen A, Plukis L, Poch A, Pretel C, Praena J, Quesada J, Rauscher T, Reifarth R, Riego A, Roman F, Rudolf G, Rubbia C, Rullhusen P, Salgado J, Santos C, Sarchiapone L, Sarmento R, Saxena A, Schillebeeckx P, Schmidt S, Schumann D, Stephan C, Tagliente G, Tain J, Tavora L, Terlizzi R, Tsinganis A, Valenta S, Vannini G, Variale V, Vaz P, Ventura A, Versaci R, Vermeulen M, Villamarin D, Vincente M, Vlachoudis V, Vlastou R, Voss F, Wallner A, Walter S, Ware T, Weigand M, Weiß C, Wiesher M, Wisshak K, Wright T, Zugec P. Towards the high-accuracy determination of the238U fission cross section at the threshold region at CERN – n_TOF. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611102002] [Citation(s) in RCA: 2] [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] [Indexed: 11/14/2022] Open
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15
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Paradela C, Duran I, Tassan-Got L, Audouin L, Berthier B, Isaev S, Le Naour C, Stephan C, Tarrío D, Abbondanno U, Aerts G, Álvarez-Pol H, Álvarez-Velarde F, Andriamonje S, Andrzejewski J, Badurek G, Baumann P, Becvar F, Berthoumieux E, Calviño F, Calviani M, Cano-Ott D, Capote R, Carrapiço C, Cennini P, Chepel V, Chiaveri E, Colonna N, Cortes G, Couture A, Cox J, Dahlfors M, David S, Dillmann I, Domingo-Pardo C, Dridi W, Eleftheriadis C, Embid-Segura M, Ferrant L, Ferrari A, Ferreira-Marques R, Fujii K, Furman W, Gonçalves I, Gonzalez-Romero E, Goverdovski A, Gramegna F, Guerrero C, Gunsing F, Haight R, Heil M, Igashira M, Jericha E, Kadi Y, Kaeppeler F, Karadimos D, Kerveno M, Ketlerov V, Koehler P, Konovalov V, Krticka M, Lampoudis C, Lederer C, Leeb H, Lindote A, Lukic S, Marganiec J, Martinez T, Marrone S, Massimi C, Mastinu P, Mengoni A, Milazzo P, Moreau C, Mosconi M, Pancin SJ, Pavlik A, Pavlopoulos P, Perrot L, Plag R, Plompen A, Plukis A, Poch A, Pretel C, Praena J, Quesada J, Rauscher T, Reifarth R, Rubbia C, Rudolf G, Rullhusen P, Salgado J, Santos C, Sarchiapone L, Savvidis I, Tagliente G, Tain J, Tavora L, Terlizzi R, Vaz P, Ventura A, Villamarin D, Vincente M, Vlachoudis V, Vlastou R, Voss F, Walter S, Weiss C, Wiesher M, Wisshak K. High accuracy235U(n,f) data in the resonance energy region. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611102003] [Citation(s) in RCA: 7] [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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16
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Tuckett J, O'Shea R, Hevers A, Perrot L, Byrne H, Murphy M, Sheahan P. Radiologically inserted gastrostomy tubes in head and neck cancer patients – demographics, treatment modality and complication rates – our experience over three years in 101 consecutive cases. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.833] [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: 11/27/2022]
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17
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Osswald F, Bouquerel E, Boutin D, Dinkov A, Kazarinov N, Perrot L, Sellam A. Transport of radioactive ion beams and related safety issues: the 132Sn+ case study. Rev Sci Instrum 2014; 85:123301. [PMID: 25554283 DOI: 10.1063/1.4902148] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The transport of intense radioactive ion beam currents requires a careful design in order to limit the beam losses, the contamination and thus the dose rates. Some investigations based on numerical models and calculations have been performed in the framework of the SPIRAL 2 project to evaluate the performance of a low energy beam transport line located between the isotope separation on line (ISOL) production cell and the experiment areas. The paper presents the results of the transverse phase-space analysis, the beam losses assessment, the resulting contamination, and radioactivity levels. They show that reasonable beam transmission, emittance growth, and dose rates can be achieved considering the current standards.
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Affiliation(s)
- F Osswald
- IPHC/IN2P3/CNRS, University of Strasbourg, 67037 Strasbourg, France
| | - E Bouquerel
- IPHC/IN2P3/CNRS, University of Strasbourg, 67037 Strasbourg, France
| | - D Boutin
- IPHC/IN2P3/CNRS, University of Strasbourg, 67037 Strasbourg, France
| | - A Dinkov
- IPHC/IN2P3/CNRS, University of Strasbourg, 67037 Strasbourg, France
| | | | - L Perrot
- IPNO/IN2P3/CNRS, University of Paris-Sud-11, 91406 Orsay, France
| | - A Sellam
- IPHC/IN2P3/CNRS, University of Strasbourg, 67037 Strasbourg, France
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18
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Delaune O, Caamaño M, Farget F, Tarasov O, Derkx X, Schmidt KH, Audouin L, Amthor A, Bacri CO, Barreau G, Bastin B, Bazin D, Benlliure J, Blank B, Cacères L, Casarejos E, Fernández-Domínguez B, Gaudefroy L, Golabek C, Grévy S, Jurado B, Kamalou O, Lemasson A, Lukyanov S, Mittig W, Morrissey D, Navin A, Pereira J, Perrot L, Rejmund M, Roger T, Saint-Laurent M, Savajols H, Schmitt C, Sherrill B, Stodel C, Thomas J, Villari A. Complete isotopic distributions of fragments produced in transfer- and fusion-induced reactions. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20136206006] [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: 11/14/2022] Open
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19
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Delaune O, Caamaño M, Derkx X, Farget F, Schmidt KH, Tarasov O, Audouin L, Amthor A, Bacri CO, Barreau G, Bastin B, Bazin D, Benlliure J, Blank B, Cacères L, Casarejos E, Fernández-Domínguez B, Gaudefroy L, Golabek C, Grévy S, Jurado B, Kamalou O, Lemasson A, Lukyanov S, Mittig W, Morrissey D, Navin A, Pereira J, Perrot L, Rejmund M, Roger T, Saint-Laurent M, Savajols H, Schmitt C, Sherrill B, Stodel C, Taieb J, Thomas J, Villari A. Evolution of isotopic fission-fragment yields with excitation energy. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20123100025] [Citation(s) in RCA: 3] [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] [Indexed: 11/14/2022] Open
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20
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Moret M, Disse E, Rizkalla S, Di Filippo M, Mestrallet F, Durand M, Groisne L, Cugnet-Anceau C, Perrot L, Charriere S, Sassolas A, Moulin P. P055 Évaluation de l’insulinorésistance au cours de l’hyperlipémie combinée familiale (HCF) et de la dyslipidémie secondaire aux traitements antirétroviraux du VIH (HAART). NUTR CLIN METAB 2011. [DOI: 10.1016/s0985-0562(11)70122-4] [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: 11/29/2022]
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21
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Ascher P, Audirac L, Adimi N, Blank B, Borcea C, Brown BA, Companis I, Delalee F, Demonchy CE, de Oliveira Santos F, Giovinazzo J, Grévy S, Grigorenko LV, Kurtukian-Nieto T, Leblanc S, Pedroza JL, Perrot L, Pibernat J, Serani L, Srivastava PC, Thomas JC. Direct observation of two protons in the decay of 54Zn. Phys Rev Lett 2011; 107:102502. [PMID: 21981498 DOI: 10.1103/physrevlett.107.102502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Indexed: 05/31/2023]
Abstract
The two protons emitted in the decay of 54Zn have been individually observed for the first time in a time projection chamber. The total decay energy and the half-life measured in this work agree with the results obtained in a previous experiment. Angular and energy correlations between the two protons are determined and compared to theoretical distributions of a three-body model. Within the shell model framework, the relative decay probabilities show a strong contribution of the p2 configuration for the two-proton emission. After 45Fe, the present result on 54Zn constitutes only the second case of a direct observation of the ground state two-proton decay of a long-lived isotope.
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Affiliation(s)
- P Ascher
- Centre d'Études Nucléaires de Bordeaux Gradignan-Université Bordeaux 1-UMR 5797 CNRS/IN2P3, Chemin du Solarium, BP 120, 33175 Gradignan, France
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22
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Tarrío D, Tassan-Got L, Audouin L, Berthier B, Duran I, Ferrant L, Isaev S, Le Naour C, Paradela C, Stephan C, Trubert D, Abbondanno U, Aerts G, Álvarez H, Álvarez-Velarde F, Andriamonje S, Andrzejewski J, Assimakopoulos P, Badurek G, Baumann P, Becvár F, Berthoumieux E, Calviño F, Calviani M, Cano-Ott D, Capote R, Carrapiço C, Cennini P, Chepel V, Chiaveri E, Colonna N, Cortes G, Couture A, Cox J, Dahlfors M, David S, Dillmann I, Domingo-Pardo C, Dridi W, Eleftheriadis C, Embid-Segura M, Ferrari A, Ferreira-Marques R, Fujii K, Furman W, Gonçalves I, González-Romero E, Gramegna F, Guerrero C, Gunsig F, Haas B, Haight R, Heil M, Herrera-Martinez A, Igashira M, Jericha E, Kadi Y, Käppeler F, Karadimos D, Karamanis D, Kerveno M, Koehler P, Kossionides E, Krticka M, Lampoudis C, Leeb H, Lindote A, Lopes I, Lozano M, Lukic S, Marganiec J, Marrone S, Martínez T, Massimi C, Mastinu P, Mengoni A, Milazzo P, Moreau C, Mosconi M, Neves F, Oberhummer H, O’Brien S, Oshima M, Pancin J, Papachristodoulou C, Papadopoulos C, Patronis N, Pavlik A, Pavlopoulos P, Perrot L, Pigni M, Plag R, Plompen A, Plukis A, Poch A, Praena J, Pretel C, Quesada J, Rauscher T, Reifarth R, Rubbia C, Rudolf G, Rullhusen P, Salgado J, Santos C, Sarchiapone L, Savvidis I, Tagliente G, Tain J, Tavora L, Terlizzi R, Vannini G, Vaz P, Ventura A, Villamarin D, Vicente M, Vlachoudis V, Vlastou R, Voss F, Walter S, Wiescher M, Wisshak K. Measurements of high-energy neutron-induced fission ofnatPb and209Bi. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100807009] [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: 11/14/2022] Open
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23
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Colonna N, Abbondanno U, Aerts G, Álvarez H, Álvarez-Velarde F, Andriamonje S, Andrzejewski J, Assimakopoulos P, Audouin L, Badurek G, Baumann P, Becvar F, Berthoumieux E, Calviani M, Calviño F, Cano-Ott D, Capote R, Carrillo de Albornoz A, Cennini P, Chepel V, Chiaveri E, Cortes G, Couture A, Cox J, Dahlfors M, David S, Dillman I, Dolfini R, Domingo-Pardo C, Dridi W, Duran I, Eleftheriadis C, Ferrant L, Ferrari A, Ferreira-Marques R, Frais-Koelbl H, Fujii K, Furman W, Goncalves I, González-Romero E, Goverdovski A, Gramegna F, Griesmayer E, Guerrero C, Gunsing F, Haas B, Haight R, Heil M, Herrera-Martinez A, Igashira M, Isaev S, Jericha E, Käppeler F, Kadi Y, Karadimos D, Karamanis D, Kerveno M, Ketlerov V, Koehler P, Konovalov V, Kossionides E, Krticka M, Lampoudis C, Leeb H, Lindote A, Lopes I, Lozano M, Lukic S, Marganiec J, Marques L, Marrone S, Martínez T, Massimi C, Mastinu P, Mengoni A, Milazzo P, Moreau C, Mosconi M, Neves F, Oberhummer H, O’Brien S, Oshima M, Pancin J, Papachristodoulou C, Papadopoulos C, Paradela C, Patronis N, Pavlik A, Pavlopoulos P, Perrot L, Pigni M, Plag R, Plompen A, Plukis A, Poch A, Pretel C, Quesada J, Rauscher T, Reifarth R, Rosetti M, Rubbia C, Rudolf G, Rullhusen P, Salgado J, Sarchiapone L, Savvidis I, Stephan C, Tagliente G, Tain J, Tassan-Got L, Tavora L, Terlizzi R, Vannini G, Vaz P, Ventura A, Villamarin D, Vicente M, Vlachoudis V, Vlastou R, Voss F, Walter S, Wendler H, Wiescher M, Wisshak K. Neutron cross-sections for next generation reactors: New data from n_TOF. Appl Radiat Isot 2010; 68:643-6. [DOI: 10.1016/j.apradiso.2010.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Jurado B, Kessedjian G, Petit M, Aïche M, Barreau G, Bidaud A, Boyer S, Carjan N, Czajkowski S, Dassie D, Grosjean C, Guiral A, Haas B, Karamanis D, Mathieu L, Misicu S, Rizea C, Santiamon F, Audouin L, Capellan N, Tassan-Got L, Wilson J, Andriamonje S, Berthoumieux E, Bouchez E, Gunsing F, Hürstel A, Lecoz Y, Lucas R, Theisen C, Sérot O, Bauge E, Billebaud A, Perrot L, Ahmad I, Greene J, Janssens R. Neutron-induced fission cross sections of short-lived actinides with the surrogate reaction method. EPJ Web of Conferences 2010. [DOI: 10.1051/epjconf/20100206004] [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: 11/14/2022] Open
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25
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Gaudefroy L, Daugas JM, Hass M, Grévy S, Stodel C, Thomas JC, Perrot L, Girod M, Rossé B, Angélique JC, Balabanski DL, Fiori E, Force C, Georgiev G, Kameda D, Kumar V, Lozeva RL, Matea I, Méot V, Morel P, Singh BSN, Nowacki F, Simpson G. Shell Erosion and Shape Coexistence in (16)43S27. Phys Rev Lett 2009; 102:092501. [PMID: 19392514 DOI: 10.1103/physrevlett.102.092501] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Revised: 12/17/2008] [Indexed: 05/27/2023]
Abstract
We report on the g-factor measurement of the first isomeric state in (16)43S27 [Ex=320.5(5) keV, T1/2=415(5) ns, and g=0.317(4)]. The 7/2- spin-parity of the isomer and the intruder nature of the ground state of the nucleus are experimentally established for the first time, providing direct and unambiguous evidence of the collapse of the N=28 shell closure in neutron-rich nuclei. The shell model, beyond the mean-field and semiempirical calculations, provides a very consistent description of this nucleus showing that a well deformed prolate and quasispherical states coexist at low energy.
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Giovinazzo J, Blank B, Borcea C, Canchel G, Dalouzy JC, Demonchy CE, de Oliveira Santos F, Dossat C, Grévy S, Hay L, Huikari J, Leblanc S, Matea I, Pedroza JL, Perrot L, Pibernat J, Serani L, Stodel C, Thomas JC. First direct observation of two protons in the decay of 45Fe with a time-projection chamber. Phys Rev Lett 2007; 99:102501. [PMID: 17930383 DOI: 10.1103/physrevlett.99.102501] [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] [Subscribe] [Scholar Register] [Received: 03/05/2007] [Indexed: 05/25/2023]
Abstract
The decay of the ground-state two-proton emitter 45Fe was studied with a time-projection chamber and the emission of two protons was unambiguously identified. The total decay energy and the half-life measured in this work agree with the results from previous experiments. The present result constitutes the first direct observation of the individual protons in the two-proton decay of a long-lived ground-state emitter. In parallel, we identified for the first time directly two-proton emission from 43Cr, a known beta-delayed two-proton emitter. The technique developed in the present work opens the way to a detailed study of the mechanism of ground state as well as beta-delayed two-proton radioactivity.
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Affiliation(s)
- J Giovinazzo
- Centre d'Etudes Nucléaires de Bordeaux Gradignan-Université Bordeaux 1-UMR 5797 CNRS/IN2P3, Chemin du Solarium, BP 120, F-33175 Gradignan Cedex, France
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27
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Hafdi-Nejjari Z, Couris CM, Schott AM, Schot AM, Perrot L, Bourgoin F, Borson-Chazot F, Sassolas G. [Role of hospital claims databases from care units for estimating thyroid cancer incidence in the Rhône-Alpes region of France]. Rev Epidemiol Sante Publique 2007; 54:391-8. [PMID: 17149160 DOI: 10.1016/s0398-7620(06)76737-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [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: 11/22/2022] Open
Abstract
BACKGROUND Incidence measures are essentially based on the data collected by cancer registries. Hospital claims databases from care units (PMSI) can be used as a source of information for registries because they contain standard records of most cancer patients. Regarding thyroid cancer, we have evaluated the PMSI as a source of information for the Rhône-Alpes thyroid cancer registry and usefulness of PMSI as a tool for surveillance of thyroid cancer incidence. METHODS Patients with incident thyroid cancer in 2002 were identified in the claims data of the Rhône-Alpes region using an algorithm based on DRG codes of thyroidectomy and on diagnosis codes of thyroid cancer in a principal or secondary position. The patients identified were compared to those in thyroid cancer registry of the Rhône-Alpes region regarding sex, age, ZIP code of residence, month of discharge and length of stay versus the diagnosis date. When the percentage of cases of claims data identified in the cancer registry and the percentage of cases of the cancer registry identified in claims data were obtained, the capture-recapture method was applied to estimate the number of missing cases and the total number of incident thyroid cancers in the region. RESULTS 667 patients were identified in claims data while the cancer registry included 677 patients. 95.2% of patients identified in claims data were in the cancer registry and 82.3% of patients in the cancer registry were identified in claims data. Cases lacking in claims data mostly corresponded to micro-cancers which represented 41% of cases in the cancer registry. Regarding cancer above 1 cm, 92% of the cancer registry cases were identified in claims data. Sensitivity of combining information from cancer registry and claims data was 99.2%. Cases lacking in cancer registry, present in claims data base and considered as true cases after obtaining pathological confirmation represented 2% of the whole thyroid cancer population. CONCLUSION Claims data obtained from anonymous regional or national bases can be helpful for checking the completeness of thyroid cancer registries and to provide a small amount of unknown cases. They can be considered an acceptable tool for surveillance of thyroid cancer incidence. The significance of the variations in incidence that could be observed from claims data remains to be evaluated in comparison with comparable data obtained from registries.
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Affiliation(s)
- Z Hafdi-Nejjari
- Registre rhône-alpin des cancers thyroïdiens, Centre de Médecine Nucléaire, Hôpital Louis-Pradel, 28, avenue Doyen-Lépine, 69500 Bron.
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Abbondanno U, Aerts G, Alvarez-Velarde F, Alvarez-Pol H, Andriamonje S, Andrzejewski J, Badurek G, Baumann P, Becvár F, Benlliure J, Berthoumieux E, Calviño F, Cano-Ott D, Capote R, Cennini P, Chepel V, Chiaveri E, Colonna N, Cortes G, Cortina D, Couture A, Cox J, Dababneh S, Dahlfors M, David S, Dolfini R, Domingo-Pardo C, Duran I, Embid-Segura M, Ferrant L, Ferrari A, Ferreira-Marques R, Frais-Koelbl H, Furman W, Goncalves I, Gallino R, Gonzalez-Romero E, Goverdovski A, Gramegna F, Griesmayer E, Gunsing F, Haas B, Haight R, Heil M, Herrera-Martinez A, Isaev S, Jericha E, Käppeler F, Kadi Y, Karadimos D, Kerveno M, Ketlerov V, Koehler P, Konovalov V, Krticka M, Lamboudis C, Leeb H, Lindote A, Lopes I, Lozano M, Lukic S, Marganiec J, Marrone S, Martinez-Val J, Mastinu P, Mengoni A, Milazzo PM, Molina-Coballes A, Moreau C, Mosconi M, Neves F, Oberhummer H, O'Brien S, Pancin J, Papaevangelou T, Paradela C, Pavlik A, Pavlopoulos P, Perlado JM, Perrot L, Pignatari M, Plag R, Plompen A, Plukis A, Poch A, Policarpo A, Pretel C, Quesada J, Raman S, Rapp W, Rauscher T, Reifarth R, Rosetti M, Rubbia C, Rudolf G, Rullhusen P, Salgado J, Soares JC, Stephan C, Tagliente G, Tain J, Tassan-Got L, Tavora L, Terlizzi R, Vannini G, Vaz P, Ventura A, Villamarin D, Vincente MC, Vlachoudis V, Voss F, Wendler H, Wiescher M, Wisshak K. Neutron capture cross section measurement of 151Sm at the CERN neutron time of flight facility (n_TOF). Phys Rev Lett 2004; 93:161103. [PMID: 15524972 DOI: 10.1103/physrevlett.93.161103] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2004] [Indexed: 05/24/2023]
Abstract
The151Sm(n,gamma)152Sm cross section has been measured at the spallation neutron facility n_TOF at CERN in the energy range from 1 eV to 1 MeV. The new facility combines excellent resolution in neutron time-of-flight, low repetition rates, and an unsurpassed instantaneous luminosity, resulting in rather favorable signal/background ratios. The 151Sm cross section is of importance for characterizing neutron capture nucleosynthesis in asymptotic giant branch stars. At a thermal energy of kT=30 keV the Maxwellian averaged cross section of this unstable isotope (t(1/2)=93 yr) was determined to be 3100+/-160 mb, significantly larger than theoretical predictions.
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Affiliation(s)
- U Abbondanno
- Istituto Nazionale di Fisica Nucleare, Trieste, Italy
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Perrot L, Charpentier M, Charpentier C, Feuillat M, Chassagne D. Yeast adapted to wine: Nitrogen compounds released during induced autolysis in a model wine. J Ind Microbiol Biotechnol 2002; 29:134-9. [PMID: 12242635 DOI: 10.1038/sj.jim.7000291] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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: 12/19/2001] [Accepted: 06/14/2002] [Indexed: 11/10/2022]
Abstract
As important as the blend of base wines before bottling, one of the most important steps in the champagne-making process is the long ageing on lees. Two yeast strains of Saccharomyces cerevisiae MC001 and MC002, used in champagne wine production, were allowed to autolyse. After 8 days of autolysis, active dry yeasts adapted to wine released 1.7- to 1.8-fold more nitrogen compounds than nonadapted active dry yeast. The nitrogen content (total, proteins, peptides and amino) present in autolysates was measured for yeasts adapted to wine. The composition of free amino acids and amino acids constituting peptides showed no difference between the two strains of yeast used. Studies of intracellular proteolytic activity and release of peptides showed no correlation between these two phenomena. These results indicate that yeasts adapted to wine give results similar to those that occur in wine during ageing.
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Affiliation(s)
- L Perrot
- Institut Universitaire de la Vigne et du Vin, Campus Montmuzard, rue Claude Ladrey, BP 27877, 21000 Dijon, France
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30
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Berthelot JM, Perrot L, Glémarec J, Nizard J, Prost A, Maugars Y. Do we use morphine often enough? An opinion survey in 100 rheumatology department patients. Joint Bone Spine 2001; 67:326-30. [PMID: 10963082] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
PATIENTS AND METHODS Shortly before their discharge from a rheumatology department, 100 patients with a mean age of 54 +/- 16 years completed a 20-item questionnaire on morphine therapy. Pain scale scores were 77.1 +/- 19 at admission and 44.2 +/- 24 at questionnaire completion. RESULTS Thirty-three patients, including 27 with spinal or nerve root disorders, received morphine during their stay. Five of these patients had a malignancy. Among patients who received morphine, 21% (6/29) were disappointed with the drug. Only four of the patients who did not receive morphine (4%) wished they had. Thirty-six percent of patients (30/83) reported previous morphine therapy given by a primary care physician (10/30) or a specialist (14/30) and/or in a hospital (22/30). Only five patients (5/100, 5%) said they regretted not having received morphine for past pain; however, 45% (35/78) of patients agreed with the suggestion that French physicians do not use morphine often enough. Most patients (82%, 65/77) agreed that morphine can be used to treat pain due to rheumatic disorders, although 92% (83/90) felt that morphine should be reserved for "intolerable" pain. Only 37% (34/92) of the patients were apprehensive about using morphine, 57% (45/79) were aware of the risk of dependency, 66% (44/79) of the risk of behavioral or attention disorders, and 53% (41/78) of the risk of tolerance. CONCLUSION Expectations of French rheumatology department patients about morphine use were roughly satisfactory. The mean pain scale score above which the patients felt morphine should be given was 70.5 +/- 20.
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Affiliation(s)
- J M Berthelot
- Rheumatology Department, Nantes Teaching Hospital, France
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31
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Baccot S, Tiffet O, Bonnot P, Perrot L, Cuilleret J. [Bilateral post-traumatic adrenal hemorrhage. Report of a case with acute adrenal insufficiency]. Ann Chir 2000; 125:273-5. [PMID: 10829509 DOI: 10.1016/s0001-4001(00)00125-2] [Citation(s) in RCA: 20] [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] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Bilateral adrenal haemorrhage of traumatic origin is rarely observed or possibly missed in severely multi-traumatised patients. It can lead to a potentially fatal adrenal shock. Its emergency diagnosis is made by imaging techniques, usually by CT-scan. Early substitution therapy has to be done. This complication emphasizes the importance of an immediate abdominal morphological exploration in multi-traumatized patients when this is feasible.
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Affiliation(s)
- S Baccot
- Service de chirurgie générale et digestive, CHU de Saint-Etienne, hôpital nord, France
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32
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Cresienzo D, Perrot L, Barrat C, Catheline JM, Champault G. [Laparoscopic treatment of acute cholecystitis. Incidence of anatomo-clinical variations (271 cases)]. Chirurgia (Bucur) 2000; 95:11-5. [PMID: 14959637] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
The study is based on 1050 laparoscopic cholecystectomies for gallstones performed between 1991-1999, out of which 271 were preoperatively considered as acute cholecystitis (25.8%). The clinical, biological and ultrasound criteria were rigorously respected. The preoperative period of 1 to 5 days (mean--2.5) was used for re-equilibration and antibiotic and antithrombotic therapy. The intraoperative criteria were clinical, echolaparoscopical, cholangiographical and bacteriological and established in 219 cases the diagnostic of acute cholecystitis. The final diagnostic, on histopathological basis, confirmed the preoperative diagnosis of acute cholecystitis in 224 cases. The microscopical reexamination in the remainding controversy cases reclassified other 18 as acute cholecystitis (final concordance ratio--242:271). The preoperative overvaluation may be consecutive to a too rapid (before the constitution of specific lesions) or too delayed intervention (the aspect becoming chronical). The elements of diagnostic discordance are raising the problem of case selection and the necessity for standard classification of histological lesions in acute cholecystitis.
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Affiliation(s)
- D Cresienzo
- Université Paris XIII-UFR de Médecine Léonard de Vinci
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33
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Cresienzo D, Barrat C, Perrot L, Champault G. [Anatomo-clinical incongruities in acute cholecystitis. Apropos of 271 cases treated by laparoscopic surgery]. G Chir 1999; 20:449-52. [PMID: 10645059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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35
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Perrot L, Champault G. [What's new in cancer of the stomach? An overview of the literature of this year]. J Chir (Paris) 1998; 135:148-54. [PMID: 9827393] [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: 02/09/2023]
Abstract
Literature review for the years 1997 and 1998 presents new concepts for gastric carcinoma (lymphoma and proximal adenocarcinoma excluded). In the light of 50 papers, this update emphasizes the role of Helicobacter Pylori in gastric carcinogenesis, different staging systems, video-laparoscopic staging, treatment of early and advanced gastric cancer and new biological prognostic factors.
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Affiliation(s)
- L Perrot
- Service de Chirurgie Générale et Digestive, Hôpital Jean Verdier, Bondy
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36
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Vergnon P, Morgon E, Dargent S, Benyamine D, Favre M, Perrot L, Pradat E, Colin C. [Quality assessment of the medical information on the standardized discharge summary]. Rev Epidemiol Sante Publique 1998; 46:24-33. [PMID: 9533231] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND DRG-based management of public hospitals in France involves the use of standardised discharge abstracts for the "Medicalisation of Information Systems Program". METHODS To assess the quality of the medical information in these abstracts, a sample of 649 abstracts for 1994 was collected from the Hospices Civils de Lyon's data base. To validate the information in these abstracts, we reviewed the medical records of each patient. RESULTS The results showed an error rate of 32% (CI: 28-36) for the diagnosis-related group and an error rate of 40% (CI: 36-44) for the principal diagnosis. There was no significant difference between these error rates and the calculation of "Indices Synthétiques d'Activité" (French system for attributing points to hospital stays according to DRGs categories). CONCLUSIONS The quality of the medical information for the "Medicalisation of Information Systems Program" remains a major challenge not only for budget allocation, but also for the study of the case-mix in hospitals.
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Affiliation(s)
- P Vergnon
- Département d'Information Médicale des Hospices Civils de Lyon
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37
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Gue´rin M, Dolphin P, Perrot L, Gardette J, Berthe´ze`ne F, Chapman M. Reverse cholesterol transport in heterozygous familial hypercholestrolemia. Effects of pravastatin upon LDL subspecies acceptor capability and atherogenic potential. Atherosclerosis 1994. [DOI: 10.1016/0021-9150(94)93949-7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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de Parscau L, Moulin P, Bourdillon MC, Perrot L, Ponsin G, Berthezene F. Defect in the net transport of cholesterol from cultured fibroblasts to serum of hypothyroid patients. Horm Metab Res 1989; 21:400-1. [PMID: 2777201 DOI: 10.1055/s-2007-1009247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- L de Parscau
- Inserm U 197, Laboratoire de Métabolisme des Lipides, Hopital de l'Antiquaille, Lyon, France
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39
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Verdugo C, Perrot L, Ponsin G. Time-course of alterations of high density lipoproteins (HDL) during thyroxine administration to hypothyroid women. Maturitas 1988. [DOI: 10.1016/0378-5122(88)90169-7] [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: 10/25/2022]
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40
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Abstract
Lipid composition of both plasma and platelets were investigated in sixteen old (78-94 years) and eight young (25-35 years) subjects. No age-related change was noted in plasma total and HDL cholesterol whereas a slightly increase of triglycerides was observed in the elderly population. Level of apo AI tended to decrease while apo AII decreased significantly in the elderly. These results led to a higher apo AI/apo AII ratio in elder subjects. However, no difference was detected in the level of apo B. In contrast, several modifications appeared in fatty acid composition of plasma lipids. Primarily, monounsaturated fatty acids content was increased while level of linoleic acid (and arachidonic acid in phospholipids) decreased in each class of plasma lipids of elderly subjects. In platelets from the elderly, we found an enhancement of monounsaturated fatty acids in phosphatidyl-inositol (PI), -ethanolamine (PE) and -choline (PC). The decrease of linoleic acid was detected in PC while the reduction of AA was noted in PE. These results indicate that modifications of fatty acid composition in both plasma and platelet lipids appeared with aging. They might be linked to the enhanced platelet activation in vivo observed in elderly people.
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Affiliation(s)
- E Vericel
- INSERM U.63, Faculté de Médecine, Lyon, France
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41
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Bednarczyk B, Soldin SJ, Gasinska I, D'Costa M, Perrot L. Improved receptor assay for measuring digoxin activity. Clin Chem 1988; 34:393-7. [PMID: 2830054] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We describe a receptor assay of digoxin activity involving Na+/K+-ATPase (EC 3.6.1.37) derived from human heart tissue. The procedure requires 500 microL of serum or plasma and incorporates one purification step, with Sep-Pak C18 cartridges (Waters). The method appears to be considerably more specific for digoxin and its cardio-active metabolites than are conventional immunoassays. Cardio-inactive metabolites and several digoxin-like factors cross react only slightly. The between-day coefficient of variation for the procedure ranged from 8.10% to 1.37% for digoxin concentrations between 0.5 and 5.0 nmol/L.
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Affiliation(s)
- B Bednarczyk
- Research Institute Hospital for Sick Children, Toronto, Ontario, Canada
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42
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Abstract
Abstract
We describe a receptor assay of digoxin activity involving Na+/K+-ATPase (EC 3.6.1.37) derived from human heart tissue. The procedure requires 500 microL of serum or plasma and incorporates one purification step, with Sep-Pak C18 cartridges (Waters). The method appears to be considerably more specific for digoxin and its cardio-active metabolites than are conventional immunoassays. Cardio-inactive metabolites and several digoxin-like factors cross react only slightly. The between-day coefficient of variation for the procedure ranged from 8.10% to 1.37% for digoxin concentrations between 0.5 and 5.0 nmol/L.
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Affiliation(s)
- B Bednarczyk
- Research Institute Hospital for Sick Children, Toronto, Ontario, Canada
| | - S J Soldin
- Research Institute Hospital for Sick Children, Toronto, Ontario, Canada
| | - I Gasinska
- Research Institute Hospital for Sick Children, Toronto, Ontario, Canada
| | - M D'Costa
- Research Institute Hospital for Sick Children, Toronto, Ontario, Canada
| | - L Perrot
- Research Institute Hospital for Sick Children, Toronto, Ontario, Canada
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Abstract
The alterations of HDL structure and metabolism induced by bezafibrate administration were studied in healthy male volunteers. As usually observed in hyperlipaemic patients, bezafibrate induced a decrease of the plasma concentrations of apo B and LDL-cholesterol and an increase of that of HDL-cholesterol. Analysis of HDL by gradient polyacrylamide gel electrophoresis revealed that bezafibrate administration resulted in a change of the particle size distribution likely suggesting a drop of the HDL2/HDL3 ratio. This was accompanied by a 30% enhancement of the plasma concentration of apoprotein A-II, while that of apoprotein A-I remained unchanged. These data suggest an increase of the HDL concentration, preferentially in the HDL3 subfraction. In spite of these HDL alterations, there was no evidence of change in the three stages of the reverse pathway of cholesterol, since bezafibrate did not induce any significant alteration in the in vitro properties of plasma with respect to (a) cholesterol transport from cultured cells, (b) cholesterol esterification, and (c) transfer of cholesteryl esters from HDL to VLDL-LDL.
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Affiliation(s)
- P Moulin
- INSERM U. 197, Laboratoire de Métabolisme des Lipides, Hôpital de l'Antiquaille, Lyon, France
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Renaud S, Ciavatti M, Perrot L, Berthezene F, Dargent D, Condamin P. Influence of vitamin E administration on platelet functions in hormonal contraceptive users. Contraception 1987; 36:347-58. [PMID: 3677678 DOI: 10.1016/0010-7824(87)90105-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Platelet functions (aggregation, clotting activity), platelet lipid biosynthesis, sterol composition and phospholipid fatty acids were studied in relation to plasma lipids and fatty acids as well as dietary habits at day 5 and 21 of the menstrual cycle in 30 women having used hormonal contraceptive for several years. The women were studied again on day 21 of the second cycle after they had taken for two months 200 mg vitamin E per day in addition to the contraceptive. At day 21 (after 3 weeks of hormonal contraceptive) as compared to day 5, there was a significant increase in the clotting activity of platelets and the response to ADP-induced aggregation concomitant with a decrease in plasma vitamin E. After vitamin E administration, platelet activity at day 21 was markedly decreased, being similar to the activity at day 5, with a significant increase in the level of vitamin E in plasma and platelets. The high response of platelets to aggregation in women using contraceptives does not seem to be associated with the intake of saturated fat but rather with that of 18:2. The aggregation to thrombin was mostly related to lanosterol biosynthesis and the aggregation to ADP to platelet cholesterol, but not to plasma lipids or apoproteins. The present pilot study suggests that the platelet hyperactivity of long-term hormonal contraceptive users might be dependent upon a low level of platelet alpha-tocopherol which can be rapidly overcome by giving a supplement of vitamin E.
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Verdugo C, Perrot L, Ponsin G, Valentin C, Berthezene F. Time-course of alterations of high density lipoproteins (HDL) during thyroxine administration to hypothyroid women. Eur J Clin Invest 1987; 17:313-6. [PMID: 3117568 DOI: 10.1111/j.1365-2362.1987.tb02193.x] [Citation(s) in RCA: 19] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Serum HDL cholesterol, apolipoproteins AI and AII and post heparin lipolytic activities (PHLA) have been measured in a group of fourteen hypothyroid women without ovarian oestrogen secretion before and during a 2-month thyroxine treatment. The more rapid and consistent observed event was a decrease in apo AI levels (164 +/- 5 vs. 149 +/- 5 mg dl-1, mean +/- SEM, P less than 0.05) correlated (r = 0.79, P less than 0.05) to a slight increment of PHLA. A slight decrease in apo AII concentration was seen only after 5 days (25 +/- 2 vs. 22 +/- 2 mg dl-1, P less than 0.05) and in HDL cholesterol only after 60 days (1.3 +/- 0.6 vs. 1.1 +/- 0.5 mmol 1-1, P less than 0.05). Apo AI, HDL2 and HDL3 cholesterol were measured in another group of seven hypothyroid postmenopausal women before and after a 2-month thyroxine treatment. We observed a decrease in HDL2 cholesterol (1.69 +/- 0.20 vs. 1.17 +/- 0.09 mmol 1-1, P less than 0.02) with no changes in HDL3 cholesterol (0.88 +/- 0.09 vs. 0.99 +/- 0.06 mmol 1-1, NS). The decrease in HDL2 cholesterol correlated (r = 0.72, P = 0.05) with that for apo AI. The differential influence of thyroxine (T4) administration on the major HDL components might reflect changes in HDL composition due to the multiple effects of thyroid hormones on lipid metabolism. It can be hypothesized that the decrease in apo AI and HDL2 cholesterol concentrations are due, at least in part, to the increase in hepatic lipase activity.
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Affiliation(s)
- C Verdugo
- Service d'Endocrinologie et des maladies, de la Nutrition, Unité INSERM 197, Hôpital de l'Antiquaille, Lyon, France
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46
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Berthezene F, Perrot L, De Parscau L, Valentin C, Richard L. [Thyroid hormones and the metabolism of lipoproteins]. Ann Endocrinol (Paris) 1983; 44:73-6. [PMID: 6347029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Variations, generally not very marked, observed in triglycerides levels during thyroid affections are the result of the action of thyroid hormones on very low density lipoprotein (VLDL) metabolism. Hepatic synthesis of VLDL is increased in hyperparathyroidism due to elevation of circulating fatty acids levels, and in hypothyroidism only in obese patients. Catabolism of VLDL is accelerated in hyperthyroidism and slowed in hypothyroidism. The variations are probably related to changes in activity of lipoprotein lipase and/or hepatic triglyceride lipase, as well as structural modifications in VLDL. Variations in cholesterolemia observed during thyroid affections result mainly from alterations in low density lipoprotein (LDL) metabolism, parallel variations occurring in apoprotein B levels. Thyroid hormones increase cholesterol synthesis, and accelerate LDL catabolism by increasing the number of apoprotein B receptor in peripheral tissues and probably by other mechanisms independent of these receptors. Significant variations in cholesterol levels carried by high density lipoproteins (HDL) are not observed during hypothyroidism, an inconstant reduction being noted in hyperthyroidism. Apoprotein A2 levels are unchanged in thyroid disorders, those of apoproteins A1 being reduced in hyperthyroidism and normal in hypothyroidism, though they diminish transiently during substitutive treatment of the latter condition.
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47
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Riou JP, Beylot M, Perrot L, Klioua R, Odeon M, Mornex R. [Effect of thyroid function on ketogenesis (author's transl)]. Ann Endocrinol (Paris) 1980; 41:562-7. [PMID: 7247339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Thyroid hormone effects have been studied in both rats and human. In rats ketone body levels are increased by thyroid hormone excess at the initial phase of starvation. Glucose levels are also increased at the initial and late phase of starvation. Ketone bodies production of isolated liver cells from thyroidectomized fed rats (14 +/- 0,2 muMol/g/h) are decreased when compared with cells from thyroidectomized fed rats treated with triiodothyronine 63 +/- 3 muMol/g/h). These changes are related to a direct effect of T3. Ketone bodies levels are increased in Grave's diseases. The increase is significantly correlated to thyroid hormone levels.
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Berthezéne F, Perrot L, Munari Y, Ponsin G. [Multiple effects of resorcinol on thyroid function (author's transl)]. Ann Endocrinol (Paris) 1979; 40:67-8. [PMID: 443741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In rats, I.V. injected resorcinol led to a decrease in thyroid radioiodine uptake and labelled iodothyronine/iodotyrosine ratio with no changes in the percent of thyroidal labelled iodide or radioiodine release. When thyroid lobes were incubated in vitro with radioiodine, resorcinol concentrations from 10(-3)M to 10(-6)M gave an increase in the percent of thyroidal labelled iodide and iodotyrosine/iodothyronine ratio. In animals fed 5% resorcinol for 2 weeks we observed an increase in thyroid weight, a decrease in plasma T4, no change in the percent of free T4, a decrease in T4 half life and no significant changes in T3 half life. Thyroidal labelled MIT/DIT and T3/T4 atios increased. Resorcinol, given in diet during 5 days to rats which had a low thyroidal thyroglobulin content after PTU administration for 2 weeks, gave, in comparison with rats fed PTU only, an increase in thyroidal thyroglobulin/DNA ratio and a decrease in thyroidal radioiodine release contrasting with an increase in plasma TSH. These differences did not exist when resorcinol was given for one month.
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Dumont M, Mignot G, Perrot L, Gout C. [Variations in liquid volume of the maternal body during pregnancy. Determination by whole body impedance measurements]. Nouv Presse Med 1978; 7:1205. [PMID: 662647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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50
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Mornex R, Hugues B, Perrot L. Methods of follow-up for treated thyroid carcinomas. Ann Radiol (Paris) 1977; 20:856-8. [PMID: 610560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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