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Catry C, Lourdin D, Roelens G, Nguyen GT, Vidal F, Plesse C, Leroy E. Electroactive trilayer actuators taking advantage of the ionic conductivity and self-adhesion of ionic liquid plasticized starch. Carbohydrate Polymer Technologies and Applications 2023. [DOI: 10.1016/j.carpta.2023.100295] [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: 02/18/2023] Open
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Rigourd V, Benoit L, Paugam C, Driessen M, Charlier C, Bille E, Pommeret B, Leroy E, Murmu MS, Guyonnet A, Baumot N, Seror JY. Management of lactating breast abscesses by ultrasound-guided needle aspiration and continuation of breastfeeding: A pilot study. J Gynecol Obstet Hum Reprod 2021; 51:102214. [PMID: 34469779 DOI: 10.1016/j.jogoh.2021.102214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/18/2021] [Revised: 06/21/2021] [Accepted: 08/27/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Needle aspiration of breast abscesses during lactation are currently recommended as an alternative to surgery only for moderate forms. In case of breast abscess, many patients stop breastfeeding on the advice of a health professional. We reviewed our experience of treatment of lactating breast abscesses by ultrasound-guided aspiration and suggest an algorithm of their management. We also analyzed the continuation of breastfeeding of these patients after advices from trained teams. MATERIEL AND METHODS We conducted a retrospective study from April 2016 to April 2017, including 28 patients referred for a breast abscess during lactation at the Duroc Breast Imaging Center. A management by ultrasound-guided aspiration was proposed to each patient. We collected data about the breastfeeding between October 2018 and January 2019. RESULTS A single aspiration was sufficient in 64.3% of cases. The delay between the occurrence of the abscess and the indication for drainage was significantly higher for patients who have needed finally surgical drainage (p = 0,0031). There were no difference of size of abscesses between patients receiving needle aspiration alone and those who have undergone surgery (p = 0,97). All patients who had been managed by needle aspiration continued breastfeeding after the treatment and 40% of the patients were still breastfeeding at 6 months. CONCLUSION The management of lactating breast abscess by ultrasound-guided needle aspiration is an effective alternative to surgery. It appears to be effective regardless of the size of the abscess and is compatible with the continuation of breastfeeding. Our study has indeed shown that if they are well advised, the majority of patients continue breastfeeding so that it is essential that health professionals be better trained regarding the management of breastfeeding complications.
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Affiliation(s)
- V Rigourd
- Lactarium Régional d'Ile-de-France, Necker Hôpital Enfants malades, 149 rue de Sèvres, Paris 75015, France; Réseau de Santé Périnatal Parisien, Paris, France.
| | - L Benoit
- Department of Obstetrics and Gynecology, Necker Hôpital Enfants malades, Paris, France
| | - C Paugam
- Réseau de Santé Périnatal Parisien, Paris, France
| | - M Driessen
- Department of Obstetrics and Gynecology, Necker Hôpital Enfants malades, Paris, France
| | - C Charlier
- Department of Obstetrics and Gynecology, Necker Hôpital Enfants malades, Paris, France
| | - E Bille
- Department of Microbiology, Necker Hôpital Enfants malades, Paris, France
| | - B Pommeret
- Department of Obstetrics and Gynecology, Lille, France
| | - E Leroy
- Department of Neonatology, Necker Hôpital Enfants malades, Paris, France
| | - M S Murmu
- Lactarium Régional d'Ile-de-France, Necker Hôpital Enfants malades, 149 rue de Sèvres, Paris 75015, France
| | - A Guyonnet
- Lactarium Régional d'Ile-de-France, Necker Hôpital Enfants malades, 149 rue de Sèvres, Paris 75015, France
| | - N Baumot
- Réseau de Santé Périnatal Parisien, Paris, France
| | - J Y Seror
- Department of Radiology, Duroc Breast Imaging Department, Paris, France
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Brugère-Picoux J, Leroy E, Rosolen S, Angot JL, Buisson Y. [Covid-19 and the animal world, from a still mysterious origin towards an always unpredictable future]. Bull Acad Natl Med 2021; 205:879-890. [PMID: 34305142 PMCID: PMC8278875 DOI: 10.1016/j.banm.2021.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Bien que l’émergence de la Covid-19 en Chine n’ait pas été clairement élucidée, l’hypothèse d’une origine animale reste la plus probable. Elle est étayée par la présence de la chauve-souris fer à cheval suspectée d’être le progéniteur du SARS-CoV-2 et par la raréfaction de la viande de porc, due à la peste porcine africaine, détournant les consommateurs vers des animaux exotiques d’élevage vendus sur les marchés. Au cours de cette pandémie, plusieurs espèces animales ont été atteintes par le SARS-CoV-2. Des cas sporadiques ont d’abord été rapportés chez des animaux de compagnie (chiens et chats) contaminés par leurs propriétaires, puis des grands félins et des gorilles contaminés dans des zoos par leurs soigneurs. La transmission la plus importante de l’Homme à l’animal a eu lieu dans les élevages de visons, surtout aux Pays-Bas et au Danemark, nécessitant l’euthanasie de plusieurs millions d’animaux, les visons ayant, à leur tour, contaminé des hommes et des chats errants. L’étude des transmissions naturelles ou expérimentales du SARS-CoV-2 a permis d’identifier les espèces animales les plus réceptives : les visons d’Amérique et les chiens viverrins, et dans une moindre mesure les chats errants, qui pourraient devenir un réservoir animal en raison de leur sensibilité à ce virus et de leur prolificité. La Commission européenne a décidé le 17 mai 2021 de renforcer la surveillance des infections par le SARS-CoV-2 chez les visons et d’autres mustélidés, ainsi que chez des chiens viverrins, en soulignant que l’évaluation épidémiologique du risque que présente l’apparition du SARS-CoV-2 chez ces espèces sensibles était une priorité de santé publique.
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Affiliation(s)
- J Brugère-Picoux
- Académie nationale de médecine, 16, rue Bonaparte, 75006 Paris, France.,Académie vétérinaire de France, 34, rue Bréguet, 75011 Paris, France
| | - E Leroy
- Académie nationale de médecine, 16, rue Bonaparte, 75006 Paris, France.,Académie vétérinaire de France, 34, rue Bréguet, 75011 Paris, France
| | - S Rosolen
- Académie nationale de médecine, 16, rue Bonaparte, 75006 Paris, France.,Académie vétérinaire de France, 34, rue Bréguet, 75011 Paris, France
| | - J-L Angot
- Académie nationale de médecine, 16, rue Bonaparte, 75006 Paris, France.,Académie vétérinaire de France, 34, rue Bréguet, 75011 Paris, France
| | - Y Buisson
- Académie nationale de médecine, 16, rue Bonaparte, 75006 Paris, France.,Académie vétérinaire de France, 34, rue Bréguet, 75011 Paris, France
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Guehenneux H, Geffroy C, Leroy E. [Source blocking in HDR brachytherapy: Practical situation and experience feedback at the Eugène Marquis-Rennes]. Cancer Radiother 2021; 25:648-649. [PMID: 34187715 DOI: 10.1016/j.canrad.2021.06.003] [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: 05/30/2021] [Accepted: 06/04/2021] [Indexed: 11/15/2022]
Abstract
At the Eugene Marquis Center, high dose rate brachytherapy is part of the care offering. The risk analysis and the national experience feedback linked to the use of high activity sources show that blocking the source outside its storage position, during treatment, would be the main risk of exposure of ionizing radiation. In a process of radiation protection of patients and workers, and to limit the consequences of such an accident, the Eugene Marquis Center has set up periodic training with practical experience for all brachytherapy professionals. This article describes the experience feedback from this training by brachytherapy technicians.
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Affiliation(s)
- H Guehenneux
- Avenue de la Bataille Flandres-Dunkerque, 35000 Rennes, France.
| | - C Geffroy
- Avenue de la Bataille Flandres-Dunkerque, 35000 Rennes, France.
| | - E Leroy
- Avenue de la Bataille Flandres-Dunkerque, 35000 Rennes, France.
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Morlet E, Costemale-Lacoste JF, Poulet E, McMahon K, Hoertel N, Limosin F, Alezrah C, Amado I, Amar G, Andréi O, Arbault D, Archambault G, Aurifeuille G, Barrière S, Béra-Potelle C, Blumenstock Y, Bardou H, Bareil-Guérin M, Barrau P, Barrouillet C, Baup E, Bazin N, Beaufils B, Ben Ayed J, Benoit M, Benyacoub K, Bichet T, Blanadet F, Blanc O, Blanc-Comiti J, Boussiron D, Bouysse AM, Brochard A, Brochart O, Bucheron B, Cabot M, Camus V, Chabannes JM, Charlot V, Charpeaud T, Clad-Mor C, Combes C, Comisu M, Cordier B, Costi F, Courcelles JP, Creixell M, Cuche H, Cuervo-Lombard C, Dammak A, Da Rin D, Denis JB, Denizot H, Deperthuis A, Diers E, Dirami S, Donneau D, Dreano P, Dubertret C, Duprat E, Duthoit D, Fernandez C, Fonfrede P, Freitas N, Gasnier P, Gauillard J, Getten F, Gierski F, Godart F, Gourevitch R, Grassin Delyle A, Gremion J, Gres H, Griner V, Guerin-Langlois C, Guggiari C, Guillin O, Hadaoui H, Haffen E, Hanon C, Haouzir S, Hazif-Thomas C, Heron A, Hubsch B, Jalenques I, Januel D, Kaladjian A, Karnycheff JF, Kebir O, Krebs MO, Lajugie C, Leboyer M, Legrand P, Lejoyeux M, Lemaire V, Leroy E, Levy-Chavagnat D, Leydier A, Liling C, Llorca PM, Loeffel P, Louville P, Lucas Navarro S, Mages N, Mahi M, Maillet O, Manetti A, Martelli C, Martin P, Masson M, Maurs-Ferrer I, Mauvieux J, Mazmanian S, Mechin E, Mekaoui L, Meniai M, Metton A, Mihoubi A, Miron M, Mora G, Niro Adès V, Nubukpo P, Omnes C, Papin S, Paris P, Passerieux C, Pellerin J, Perlbarg J, Perron S, Petit A, Petitjean F, Portefaix C, Pringuey D, Radtchenko A, Rahiou H, Raucher-Chéné D, Rauzy A, Reinheimer L, Renard M, René M, Rengade CE, Reynaud P, Robin D, Rodrigues C, Rollet A, Rondepierre F, Rousselot B, Rubingher S, Saba G, Salvarelli JP, Samuelian JC, Scemama-Ammar C, Schurhoff F, Schuster JP, Sechter D, Segalas B, Seguret T, Seigneurie AS, Semmak A, Slama F, Taisne S, Taleb M, Terra JL, Thefenne D, Tran E, Tourtauchaux R, Vacheron MN, Vandel P, Vanhoucke V, Venet E, Verdoux H, Viala A, Vidon G, Vitre M, Vurpas JL, Wagermez C, Walter M, Yon L, Zendjidjian X. Psychiatric and physical outcomes of long-term use of lithium in older adults with bipolar disorder and major depressive disorder: A cross-sectional multicenter study. J Affect Disord 2019; 259:210-217. [PMID: 31446382 DOI: 10.1016/j.jad.2019.08.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 03/15/2019] [Revised: 07/11/2019] [Accepted: 08/18/2019] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Although lithium is widely used in current practice to treat bipolar disorder (BD) and treatment-resistant major depressive disorder (MDD) among older adults, little is known about its efficacy and tolerability in this population, which is generally excluded from randomized clinical trials. The objective of this study was to evaluate the efficacy and tolerability of long-term use of lithium among older adults with BD and MDD. METHOD Data from the Cohort of individuals with Schizophrenia and mood disorders Aged 55 years or more (CSA) were used. Two groups of patients with BD and MDD were compared: those who were currently receiving lithium versus those who were not. The effects of lithium on psychiatric (i.e., depressive symptoms severity, perceived clinical severity, rates of psychiatric admissions in the past-year), geriatric (overall and cognitive functioning) and physical outcomes (i.e., rates of non-psychiatric medical comorbidities and general hospital admissions in the past-year) were evaluated. All analyses were adjusted for age, sex, duration of disorder, diagnosis, smoking status, alcohol use, and use of antipsychotics, antiepileptics or antidepressants. RESULTS Among the 281 older participants with BD or MDD, 15.7% were taking lithium for a mean duration of 12.5(SD = 11.6) years. Lithium use was associated with lower intensity of depressive symptoms, reduced perceived clinical global severity and lower benzodiazepine use (all p < 0.05), without being linked to greater rates of medical comorbidities, except for hypothyroidism. LIMITATIONS Data were cross-sectional and data on lifetime history of psychotropic medications was not assessed. CONCLUSION Our results suggest that long-term lithium use may be efficient and relatively well-tolerated in older adults with BD or treatment-resistant MDD.
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Affiliation(s)
- Elise Morlet
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France
| | - Jean-François Costemale-Lacoste
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France; INSERM UMRS 1178, CESP, Le Kremlin Bicêtre, France.
| | - Emmanuel Poulet
- INSERM, U1028, CNRS, UMR5292, Lyon Neuroscience Research Center, PSY-R2 Team, Lyon F-69000, France
| | - Kibby McMahon
- Department of Psychology & Neuroscience, Duke University, 2213 Elba Street, Durham, NC 27710, United States
| | - Nicolas Hoertel
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France; INSERM UMR 894, Psychiatry and Neurosciences Center, Paris, France; Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Frédéric Limosin
- Department of Psychiatry, Corentin Celton Hospital, 4 Parvis Corentin Celton, 92130 Issy-les-Moulineaux, France; INSERM UMR 894, Psychiatry and Neurosciences Center, Paris, France; Paris Descartes University, Sorbonne Paris Cité, Paris, France
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Filipot JF, Guimaraes P, Leckler F, Hortsmann J, Carrasco R, Leroy E, Fady N, Accensi M, Prevosto M, Duarte R, Roeber V, Benetazzo A, Raoult C, Franzetti M, Varing A, Le Dantec N. La Jument lighthouse: a real-scale laboratory for the study of giant waves and their loading on marine structures. Philos Trans A Math Phys Eng Sci 2019; 377:20190008. [PMID: 31424340 PMCID: PMC6710471 DOI: 10.1098/rsta.2019.0008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/08/2019] [Indexed: 06/10/2023]
Abstract
This paper presents results from an experiment designed to improve the understanding of the relationship between extreme breaking waves and their mechanical loading on heritage offshore lighthouses. The experiment, conducted at La Jument, an iconic French offshore lighthouse, featured several records of wave, current and structure accelerations acquired during severe storm conditions, with individual waves as high as 24 m. Data analysis focuses on a storm event marked by a strong peak in the horizontal accelerations measured inside La Jument. Thanks to stereo-video wave measurements synchronized to the acceleration record we were able to identify and describe the breaking wave responsible for this intense loading. Our observations suggest that this giant wave (19 m high) had a crest elevation high enough to directly hit the lighthouse tower, above the substructure. This paper reveals the potential for conducting ambitious field experiments from offshore lighthouses in order to collect valuable storm waves and wave loading observations. This offers a possible second service life for these heritage structures as in situ laboratories dedicated to the study of the coastal hydrodynamics and its interaction with marine structures. This article is part of the theme issue 'Environmental loading of heritage structures'.
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Affiliation(s)
| | - P. Guimaraes
- Service Hydrographique et Oceanographique de la Marine, Brest, Bretagne, France
| | - F. Leckler
- Service Hydrographique et Oceanographique de la Marine, Brest, Bretagne, France
| | - J. Hortsmann
- Helmholtz-Zentrum Geesthacht HZG Campus Teltow, Geestacht, Germany
| | - R. Carrasco
- Helmholtz-Zentrum Geesthacht HZG Campus Teltow, Geestacht, Germany
| | - E. Leroy
- CEREMA Direction territoriale Ouest, Plouzané, Bretagne, France
| | - N. Fady
- CEREMA Direction territoriale Ouest, Plouzané, Bretagne, France
| | | | | | - R. Duarte
- France Energies Marines, Plouzané, Bretagne, France
| | - V. Roeber
- University of Pau and Pays de l&Adour, Bidart, France
| | | | - C. Raoult
- Service Hydrographique et Oceanographique de la Marine, Brest, Bretagne, France
| | | | - A. Varing
- France Energies Marines, Plouzané, Bretagne, France
| | - N. Le Dantec
- CEREMA Direction territoriale Ouest, Plouzané, Bretagne, France
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Bouvet C, Bertin K, Lafond C, Williaume D, de Crevoisier R, Leroy E. [Organization and risk management in stereotaxic body radiotherapy at the treatment station]. Cancer Radiother 2018; 22:532-536. [PMID: 30181030 DOI: 10.1016/j.canrad.2018.07.132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 07/10/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 10/28/2022]
Abstract
The development of stereotaxic body radiotherapy in the last decade has forced the radiotherapy departments to redouble their efforts in the fields of quality and risk management. For this purpose, increasingly complex and rigorous controls of high performance machines as well as a solid team training must be put in place. Extreme hypofractionation requires both increased vigilance at the treatment desk and well-defined and known procedures. The in place organizations contribute to the control of the risks related to the stereotaxic body radiotherapy machines. The medical presence at the beginning of the treatment fractions has been specified as mandatory in a regulatory way since January 2017. This not only ensures security, but also transmits information to the radiation therapy technicians. At the Eugène-Marquis center, the skills of the technicians for stereotaxic body radiotherapy on two dedicated machines (Cyberknife® and Versa HD® Novalis® type) have been upgraded. An accreditation is formalized after a training period and re-evaluated annually. The communication inside and outside the radiotherapy field plays also an important role in maintaining a high level of exchange and sharing of essential information. The means implemented at the Eugène-Marquis center increase the risk control of SBRT, by paying attention to the management of skills at the treatment station.
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Affiliation(s)
- C Bouvet
- Département de radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France.
| | - K Bertin
- Département de radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - C Lafond
- Département de radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - D Williaume
- Département de radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - R de Crevoisier
- Département de radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
| | - E Leroy
- Département de radiothérapie, centre Eugène-Marquis, avenue de la Bataille-Flandres-Dunkerque, 35000 Rennes, France
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Abstract
Background Mouse leukemia, L1210, strongly enhances its immunogenicity following in vivo treatment with 5-(3-3′-dimethyl-1-triazeno) imidazole-4-carboxamide (DTIC). Previous experiments have shown that transformed cells elicit a cell-mediated response accountable for rejection and resistance to a subsequent injection of parental tumor into a syngeneic host. L1210 expresses classical H-2 class I molecules, and since it has been shown that DTIC treatment does not modify the expression of these molecules, this is a suitable model to study nonclassical class I antigens, such as Qa2 glycoproteins, and their potential role in tumoregenicity. Methods Cloned cells from L1210 were treated with DTIC and then H-2D, and Qa antigen expression was studied on four clones, before and after xenogenization with DTIC. Results and conclusions a strong decrease of Qa2 molecule expression was demonstrated by radioimmunoassay and immunofluorescent staining and was confirmed by FACS and 2D-gel analysis. The presence or the absence of Qa antigens on tumor cells could thus be involved in tolerance or rejection of tumor cells in syngeneic animals.
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Affiliation(s)
- E Leroy
- Department of Pharmacology, School of Medicine, University of Milan, Italy
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Scalbert-Dujardin M, Boldron A, Leroy E, Bazin J, Froment-Leclercq E. [Influenza vaccination and cystic fibrosis. Impact of an incentivisation campaign about influenza vaccination for patients attending the Dunkerque cystic fibrosis treatment centre and their health care workers]. Rev Mal Respir 2018; 35:279-286. [PMID: 29588090 DOI: 10.1016/j.rmr.2017.11.003] [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: 05/26/2016] [Accepted: 03/17/2017] [Indexed: 10/17/2022]
Abstract
INTRODUCTION The main aim of this study is to evaluate the effectiveness of preventive actions regarding influenza in the studied populations. The secondary objective is to analyze and understand the mechanisms which bring about a behavioural change regarding influenza vaccination. METHODS The interventional and prospective study was undertaken in the form of an anonymous questionnaire about influenza vaccination coverage and about the reasons for vaccinating or not vaccinating. The studied populations were patients followed for cystic fibrosis (n=67) in the Dunkerque cystic fibrosis treatment centre and their health care workers (n=117), before (April 2014) and after (April 2015) an information campaign and primary prevention actions (vaccination in the workplace with expanded time slots) in collaboration with the department of occupational medicine. RESULTS In 2015, the vaccination coverage rate of health care workers rose to 65.63%, that is to say 2.38 times more than in 2014 (27.55%). This difference is significant (χ2[1]=29.17, P<0.0001). However, no significant difference between 2014 and 2015 was observed among patients (children and adults) (χ2[1]=0.24, NS) whose vaccination coverage was already optimal before the study. CONCLUSIONS Raising awareness among health care workers about vaccination against influenza increases the coverage rate and decreases outbreaks of virus infection in the care services and among patients at risk. Three main levers were identified: the necessity of providing information on influenza vaccination to health care workers, the ease of vaccination access and the attitude towards vaccination of supervisory staff (health executives/doctors).
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Affiliation(s)
- M Scalbert-Dujardin
- Centre de ressources et de compétences de la mucoviscidose (CRCM) mixte, centre hospitalier de Dunkerque, 59385 Dunkerque, France.
| | - A Boldron
- Centre de ressources et de compétences de la mucoviscidose (CRCM) mixte, centre hospitalier de Dunkerque, 59385 Dunkerque, France
| | - E Leroy
- Centre de ressources et de compétences de la mucoviscidose (CRCM) mixte, centre hospitalier de Dunkerque, 59385 Dunkerque, France
| | - J Bazin
- Centre de ressources et de compétences de la mucoviscidose (CRCM) mixte, centre hospitalier de Dunkerque, 59385 Dunkerque, France
| | - E Froment-Leclercq
- Centre de ressources et de compétences de la mucoviscidose (CRCM) mixte, centre hospitalier de Dunkerque, 59385 Dunkerque, France
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Leroy E, Constantinescu SN. Rethinking JAK2 inhibition: towards novel strategies of more specific and versatile Janus kinase inhibition. Leukemia 2017; 31:2853. [PMID: 29210365 DOI: 10.1038/leu.2017.158] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This corrects the article DOI: 10.1038/leu.2017.43.
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Wurtz N, Papa A, Hukic M, Di Caro A, Leparc-Goffart I, Leroy E, Landini MP, Sekeyova Z, Dumler JS, Bădescu D, Busquets N, Calistri A, Parolin C, Palù G, Christova I, Maurin M, La Scola B, Raoult D. Survey of laboratory-acquired infections around the world in biosafety level 3 and 4 laboratories. Eur J Clin Microbiol Infect Dis 2016; 35:1247-58. [PMID: 27234593 PMCID: PMC7088173 DOI: 10.1007/s10096-016-2657-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [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] [Received: 03/08/2016] [Accepted: 04/20/2016] [Indexed: 11/27/2022]
Abstract
Laboratory-acquired infections due to a variety of bacteria, viruses, parasites, and fungi have been described over the last century, and laboratory workers are at risk of exposure to these infectious agents. However, reporting laboratory-associated infections has been largely voluntary, and there is no way to determine the real number of people involved or to know the precise risks for workers. In this study, an international survey based on volunteering was conducted in biosafety level 3 and 4 laboratories to determine the number of laboratory-acquired infections and the possible underlying causes of these contaminations. The analysis of the survey reveals that laboratory-acquired infections have been infrequent and even rare in recent years, and human errors represent a very high percentage of the cases. Today, most risks from biological hazards can be reduced through the use of appropriate procedures and techniques, containment devices and facilities, and the training of personnel.
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Affiliation(s)
- N Wurtz
- URMITE, CNRS UMR 7278, IRD 198, Inserm 1095, Aix Marseille Université, IHU Méditerranée Infection, 27 bd Jean Moulin, 13005, Marseille, France
| | - A Papa
- Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - M Hukic
- International Burch University of Sarajevo, Sarajevo, Bosnia and Herzegovina
- Department of Medical Science, Academy of Sciences and Arts of Bosnia and Herzegovina, Sarajevo, Bosnia and Herzegovina
| | - A Di Caro
- National Institute for Infectious Diseases L. Spallanzani, Rome, Italy
| | - I Leparc-Goffart
- ERRIT-IRBA, HIA Laveran, Centre National de Référence des Arboviroses, 13384, Marseille, France
| | - E Leroy
- Laboratoire MiVEGEC, UMR IRD 224 CNRS 5290 UMI, 911 Av. Agropolis, 34394, Montpellier Cedex 5, France
- International Center for Medical Research of Franceville, BP769, Franceville, Gabon
| | - M P Landini
- Unit of Clinical Microbiology, Regional Reference Centre for Microbiological Emergencies (CRREM), St Orsola-Malpighi University Hospital, Bologna, Italy
| | - Z Sekeyova
- Institute of Virology, Slovak Academy of Sciences, Dúbravská cesta 9, 845 05, Bratislava, Slovak Republic
| | - J S Dumler
- Departments of Pathology and Microbiology & Immunology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - D Bădescu
- Cantacuzino National Institute of Research, Bucharest, Romania
| | - N Busquets
- IRTA, Centre de Recerca en Sanitat Animal (CReSA, IRTA-UAB), Campus de la Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - A Calistri
- Department of Molecular Medicine, University of Padova, Via Gabelli 63, 35100, Padova, Italy
| | - C Parolin
- Department of Molecular Medicine, University of Padova, Via Gabelli 63, 35100, Padova, Italy
| | - G Palù
- Department of Molecular Medicine, University of Padova, Via Gabelli 63, 35100, Padova, Italy
| | - I Christova
- Department of Microbiology, National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - M Maurin
- Centre National de Référence des Francisella, Laboratoire de Bactériologie, Département des Agents Infectieux, Institut de Biologie et Pathologie, Centre Hospitalier Universitaire de Grenoble, Université Joseph Fourier, Grenoble, France
| | - B La Scola
- URMITE, CNRS UMR 7278, IRD 198, Inserm 1095, Aix Marseille Université, IHU Méditerranée Infection, 27 bd Jean Moulin, 13005, Marseille, France
| | - D Raoult
- URMITE, CNRS UMR 7278, IRD 198, Inserm 1095, Aix Marseille Université, IHU Méditerranée Infection, 27 bd Jean Moulin, 13005, Marseille, France.
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12
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Abstract
Easy and fast synthetic routes for the screening of cholinium bio ionic liquid structures for the plasticization of starch.
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Affiliation(s)
| | - P. Decaen
- LUNAM Université
- CNRS
- GEPEA
- UMR 6144
- CRTT
| | - D. Lourdin
- INRA Nantes-Angers
- Unité Biopolymères Interactions Assemblages (BIA-UR 1268)
- 44316 Nantes Cedex 3
- France
| | - E. Leroy
- LUNAM Université
- CNRS
- GEPEA
- UMR 6144
- CRTT
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13
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Versace DL, Bourgon J, Leroy E, Dumur F, Gigmes D, Fouassier JP, Lalevée J. Zinc complex based photoinitiating systems for acrylate polymerization under air; in situ formation of Zn-based fillers and composites. Polym Chem 2014. [DOI: 10.1039/c4py00716f] [Citation(s) in RCA: 11] [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: 02/04/2023]
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14
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Ategbo S, Kombila Koumavor C, Minto\’O Rogombe S, Nkoghe D, Leroy E, Moussavou A. SFP PC-81 – Etiologies virales des diarrhées aigües de l’enfant à Libreville. Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)72230-4] [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: 11/30/2022]
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15
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Loeuille GA, Lalau G, Wizla N, Boldron A, Delepoulle F, Leroy E, Scalbert M, Desfachelles V. 7 Mutation analysis of CFTR gene in a region of North of France: uncommon and novel mutations. J Cyst Fibros 2011. [DOI: 10.1016/s1569-1993(11)60029-5] [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: 11/24/2022]
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16
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Leroy E, Baize S, Gonzalez JP. [Ebola and Marburg hemorrhagic fever viruses: update on filoviruses]. Med Trop (Mars) 2011; 71:111-121. [PMID: 21695865] [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: 05/30/2023]
Abstract
The Ebola and Marburg viruses are the sole members of the Filoviridae family of viruses. They are characterized by a long filamentous form that is unique in the viral world. Filoviruses are among the most virulent pathogens currently known to infect humans. They cause fulminating disease characterized by acute fever followed by generalized hemorrhagic syndrome that is associated with 90% mortality in the most severe forms. Epidemic outbreaks of Marburg and Ebola viruses have taken a heavy toll on human life in Central Africa and devastated large ape populations in Gabon and Republic of Congo. Since their discovery in 1967 (Marburg) and 1976 (Ebola), more than 2,300 cases and 1,670 deaths have been reported. These numbers pale in comparison with the burden caused by malnutrition or other infectious disease scourges in Africa such as malaria, cholera, AIDS, dengue or tuberculosis. However, due to their extremely high lethality, association with multifocal hemorrhaging and specificity to the African continent, these hemorrhagic fever viruses have given rise to great interest on the part not only of the international scientific community but also of the general public because of their perceived potential as biological weapons. Much research has been performed on these viruses and major progress has been made in knowledge of their ecology, epidemiology and physiopathology and in development of vaccine candidates and therapeutic schemes. The purpose of this review is to present the main developments in these particular fields in the last decade.
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Affiliation(s)
- E Leroy
- Centre International de Recherches Médicales de Franceville, Franceville, Gabon.
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17
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Grard G, Drexler JF, Lekana-Douki S, Caron M, Lukashev A, Nkoghe D, Gonzalez JP, Drosten C, Leroy E. Type 1 wild poliovirus and putative enterovirus 109 in an outbreak of acute flaccid paralysis in Congo, October-November 2010. ACTA ACUST UNITED AC 2010; 15. [PMID: 21144443 DOI: 10.2807/ese.15.47.19723-en] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
An outbreak of flaccid paralysis syndrome in adults is ongoing in Congo. Molecular analysis of faecal, throat and cerebrospinal samples identified wildtype 1 poliovirus and an additional enterovirus C strain related to enterovirus 109 as the cause. As of 22 November, the cumulative number of cases was 409, of which 169 (41.3%) were fatal. This is one of the largest wild type 1 poliovirus outbreaks ever described associated with an unusually high case fatality rate.
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Affiliation(s)
- G Grard
- Centre International de Recherches Medicales de Franceville (CIRMF, International Centre of Medical Research of Francville), Franceville, Gabon
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18
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Loeuille GA, Hérent F, Boldron-Ghaddar A, Delepoulle F, Leroy E, Scalbert-Dujardin M, Versmisse H, Bot J. Is urinary C-peptide (UCP) rate a reliable means of assessing beta cell function in CF patients? J Cyst Fibros 2010. [DOI: 10.1016/s1569-1993(10)60318-9] [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: 10/19/2022]
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19
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Davoust B, Normand T, Bourry O, Dang H, Leroy E, Bourdoiseau G. Epidemiological survey on gastro-intestinal and blood-borne helminths of dogs in north-east Gabon. ACTA ACUST UNITED AC 2009; 75:359-64. [PMID: 19294992 DOI: 10.4102/ojvr.v75i4.112] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
A survey of helminth parasites was carried out on 198 dogs living in almost complete liberty in villages in the northeast of Gabon. Faeces and blood samples were collected and analysed. Dirofilaria immitis antigen was detected in 13.6% of dogs using the SNAP 3Dx test, a commercially available enzyme-linked immunosorbent assay (ELISA). Faecal examination revealed that 91.4% of dogs were infected by intestinal helminths. Ascarids were found in 58.5% of the samples. Trichuris vulpis was observed in 49.5% of cases, and Uncinaria spp. and Ancylostoma spp. in 34.8%, Spirocerca lupi in 25.3% and Capillaria spp. in 10.6%. Cestode embryophores were found in 8.6% of the samples.
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Affiliation(s)
- B Davoust
- Direction régionale du service de santé des armies de Toulon, BP 80, 83800 Toulon Armées, France.
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20
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21
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Elliott P, Walker LL, Little MP, Blair-West JR, Shade RE, Lee R, Rouquet P, Leroy E, Jeunemaitre X, Ardaillou R, Paillard F, Meneton P, Denton DA. Change in salt intake affects blood pressure of chimpanzees implications for human populations. Circulation 116. Clin J Am Soc Nephrol 2008; 3:317-323. [PMID: 37001130 DOI: 10.2215/01.cjn.0000926952.00563.65] [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: 03/30/2023]
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22
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Perrin D, Clerc L, Leroy E, Lopez-Cuesta JM, Bergeret A. Optimizing a recycling process of SMC composite waste. Waste Manag 2008; 28:541-8. [PMID: 17611098 DOI: 10.1016/j.wasman.2007.03.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2006] [Revised: 12/15/2006] [Accepted: 03/12/2007] [Indexed: 05/16/2023]
Abstract
Investigations about the recycling of sheet moulding compounds (SMC) waste as incorporation material for thermoplastic polymer matrix are reported in this paper. A new efficient process is developed in order to strongly increase the reinforcement glass fraction of SMC leading to good mechanical performance of the new thermoplastic compounds. The overall process is composed of two main steps: mechanical and chemical. The second stage is characterised in terms of optimization and capability by means of experimental design and statistical process control techniques for finding the optimal chemical conditions and validating the process.
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Affiliation(s)
- D Perrin
- Centre des Matériaux de Grande Diffusion, Ecole des Mines d'Alès, 6, Avenue de Clavières, 30319 Alès cedex, France.
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23
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24
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Coutard B, Gorbalenya AE, Snijder EJ, Leontovich AM, Poupon A, De Lamballerie X, Charrel R, Gould EA, Gunther S, Norder H, Klempa B, Bourhy H, Rohayem J, L'hermite E, Nordlund P, Stuart DI, Owens RJ, Grimes JM, Tucker PA, Bolognesi M, Mattevi A, Coll M, Jones TA, Aqvist J, Unge T, Hilgenfeld R, Bricogne G, Neyts J, La Colla P, Puerstinger G, Gonzalez JP, Leroy E, Cambillau C, Romette JL, Canard B. The VIZIER project: preparedness against pathogenic RNA viruses. Antiviral Res 2007; 78:37-46. [PMID: 18083241 PMCID: PMC7114271 DOI: 10.1016/j.antiviral.2007.10.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Revised: 10/15/2007] [Accepted: 10/16/2007] [Indexed: 01/07/2023]
Abstract
Life-threatening RNA viruses emerge regularly, and often in an unpredictable manner. Yet, the very few drugs available against known RNA viruses have sometimes required decades of research for development. Can we generate preparedness for outbreaks of the, as yet, unknown viruses? The VIZIER (VIral enZymes InvolvEd in Replication) (http://www.vizier-europe.org/) project has been set-up to develop the scientific foundations for countering this challenge to society. VIZIER studies the most conserved viral enzymes (that of the replication machinery, or replicases) that constitute attractive targets for drug-design. The aim of VIZIER is to determine as many replicase crystal structures as possible from a carefully selected list of viruses in order to comprehensively cover the diversity of the RNA virus universe, and generate critical knowledge that could be efficiently utilized to jump-start research on any emerging RNA virus. VIZIER is a multidisciplinary project involving (i) bioinformatics to define functional domains, (ii) viral genomics to increase the number of characterized viral genomes and prepare defined targets, (iii) proteomics to express, purify, and characterize targets, (iv) structural biology to solve their crystal structures, and (v) pre-lead discovery to propose active scaffolds of antiviral molecules.
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Affiliation(s)
- B Coutard
- Architecture et Fonction des Macromolécules Biologiques, CNRS, and Universités d'Aix-Marseille I et II, UMR 6098, ESIL Case 925, 13288 Marseille Cedex 09, France
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25
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Laachachi A, Cochez M, Leroy E, Ferriol M, Lopez-Cuesta J. Fire retardant systems in poly(methyl methacrylate): Interactions between metal oxide nanoparticles and phosphinates. Polym Degrad Stab 2007. [DOI: 10.1016/j.polymdegradstab.2006.09.011] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.6] [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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26
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Blazy L, Baltes D, Bordy JM, Cutarella D, Delaunay F, Gouriou J, Leroy E, Ostrowsky A, Beaumont S. Comparison of PENELOPE Monte Carlo dose calculations with Fricke dosimeter and ionization chamber measurements in heterogeneous phantoms (18 MeV electron and 12 MV photon beams). Phys Med Biol 2006; 51:5951-65. [PMID: 17068376 DOI: 10.1088/0031-9155/51/22/016] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Different measurements of depth-dose curves and dose profiles were performed in heterogeneous phantoms and compared to dose distributions calculated by a Monte Carlo code. These heterogeneous phantoms consisted of lung and/or bone heterogeneities. Irradiations and simulations were carried out for an 18 MeV electron beam and a 12 MV photon beam. Depth-dose curves were measured with Fricke dosimeters and with plane and cylindrical ionization chambers. Dose profiles were measured with a small cylindrical ionization chamber at different depths. The LINAC was modelled using the PENELOPE code and phase space files were used as input data for the calculations of the dose distributions in every simulation. The detectors (Fricke dosimeters and ionization chambers) were not modelled in the geometry. There is generally a good agreement between the measurements and PENELOPE. Some discrepancies exist, near interfaces, between the ionization chamber and PENELOPE due to the attenuation of the lower energy electrons by the wall of the ionization chamber.
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Affiliation(s)
- L Blazy
- CEA-Saclay, DETECS/LNHB, 91190 Gif sur Yvette, France.
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27
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Laoutid F, Ferry L, Leroy E, Lopez Cuesta J. Intumescent mineral fire retardant systems in ethylene–vinyl acetate copolymer: Effect of silica particles on char cohesion. Polym Degrad Stab 2006. [DOI: 10.1016/j.polymdegradstab.2006.01.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Laachachi A, Cochez M, Leroy E, Gaudon P, Ferriol M, Lopez Cuesta JM. Effect of Al2O3 and TiO2 nanoparticles and APP on thermal stability and flame retardance of PMMA. POLYM ADVAN TECHNOL 2006. [DOI: 10.1002/pat.690] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Nkoghe D, Nnegue S, Mve MT, Formenty P, Thompson G, Iba Ba J, Okome Nkoumou M, Leroy E. [Isolated case of haemorrhagic fever observed in Gabon during the 2002 outbreak of Ebola but distant from epidemic zones]. Med Trop (Mars) 2005; 65:349-54. [PMID: 16548488] [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: 05/07/2023]
Abstract
During the last outbreak of Ebola virus haemorrhagic fever that occurred concurrently in Gabon and Congo, several primary foci were identified in the Ogooue Ivindo province (Northeast Gabon), where previous outbreaks had occurred. A 48-year-old woman living in Franceville located 580 Km from the epicentre presented fever with haemorrhagic signs. She was evacuated to Libreville where Ebola infection was suspected. Diagnosis was confirmed at the Centre International de Recherches Médicales of Franceville on the basis of detection of specific antibodies. Symptoms had already subsided by the time diagnosis was documented. An epidemiological investigation was undertaken to identify the source of contamination and detect secondary cases. No human or nonhuman primate source of contamination could be formally identified. Direct contact with the virus reservoir could not be ruled out. No secondary cases were detected. The favourable outcome, absence of secondary, and failure to identify a source of contamination suggest that epidemiologically undefined cases may go unnoticed during and outside of outbreaks.
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Affiliation(s)
- D Nkoghe
- Ministère de la Santé Publique, Libreville, Gabon
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Milleliri JM, Tévi-Benissan C, Baize S, Leroy E, Georges-Courbot MC. [Epidemics of Ebola haemorrhagic fever in Gabon (1994-2002). Epidemiologic aspects and considerations on control measures]. Bull Soc Pathol Exot 2004; 97:199-205. [PMID: 15462203] [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: 04/30/2023]
Abstract
Based on the description of the four Ebola haemorrhagic fever epidemics (EHF) occurred in Gabon between 1994 and 2002, the authors are considering the cultural and psycho-sociological aspects accounting for the difficulty to implement control measures. On the whole, the result of these raging epidemics came up to 207 cases and 150 dead (lethality: 72%). Analysing precisely the aspects of the third epidemic and pointing up the possible factors explaining its spreading far beyond its epicentre, the authors bring about the limits of measures not always understood by local populations. The discussion will deal with the possibilities of a better surveillance, a quick management of intervention means including a regional permanent pre-alert and taking into account the issue raised by the possible Ebola virus endemic.
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Affiliation(s)
- J M Milleliri
- IMTSSA - Le Pharo -Allée du Médecin Colonel Jamot - BP 46, 13998 Marseille Armées, France.
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Laachachi A, Cochez M, Ferriol M, Leroy E, Lopez Cuesta J, Oget N. Influence of Sb2O3 particles as filler on the thermal stability and flammability properties of poly(methyl methacrylate) (PMMA). Polym Degrad Stab 2004. [DOI: 10.1016/j.polymdegradstab.2004.03.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [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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32
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Munoz A, Roshal' AD, Richelme S, Leroy E, Claparols C, Grigorovich AV, Pivovarenko VG. Identification and Structural Assessment of Alkaline-Earth Metal Complexes with Flavonols by FAB Mass Spectrometry. RUSS J GEN CHEM+ 2004. [DOI: 10.1023/b:rugc.0000030403.41976.5c] [Citation(s) in RCA: 7] [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: 11/12/2022]
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33
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Makuwa M, Souquière S, Telfer P, Leroy E, Bourry O, Rouquet P, Clifford S, Wickings EJ, Roques P, Simon F. Occurrence of hepatitis viruses in wild-born non-human primates: a 3 year (1998-2001) epidemiological survey in Gabon. J Med Primatol 2004; 32:307-14. [PMID: 14641785 DOI: 10.1046/j.1600-0684.2003.00042.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Hepatitis B and C infections are endemic in human population in central Africa, particularly in Gabon. The aim of this study was to determine the prevalence of hepatitis B virus (HBV) and eventual occurrence of hepatitis C virus (HBC)-related strains in a variety of wild-born non-human primates living in Gabon and Congo. Plasma samples were screened for HBV and HCV markers. A non-invasive method of DNA extraction from faeces followed by specific HBV-DNA amplification was developed to study this infection in wild troops of chimpanzees and gorillas. No HCV infection in non-human primates, wild-born or captive, was detected among 596 samples tested. No HBV infection could be detected in samples tested and obtained from Cercopithecidae. In contrast, 14.7 and 42.2% of wild-born chimpanzees in Gabon and Congo were infected with HBV or had evidence of past HBV infection. At Centre International de Recherches Médicales (CIRMF) Primate Centre, 32.1% of chimpanzees and gorillas were HBV positive or had evidence of past infection. In the cases with past infection, 5.9% wild-born and 8.3% at CIRMF harboured HBV-DNA despite the presence of neutralizing HbsAb. Together with previous findings, we confirm the high HBV prevalence not only in humans but also in chimpanzees and gorillas in Gabon and Congo.
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Affiliation(s)
- M Makuwa
- Centre International de Recherches Médicales, Franceville, Gabon.
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34
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Nkoghé D, Formenty P, Nnégué S, Mvé MT, Hypolite I, Léonard P, Leroy E. [Practical guidelines for the management of Ebola infected patients in the field]. Med Trop (Mars) 2004; 64:199-204. [PMID: 15460155] [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: 04/30/2023]
Abstract
Ebola hemorrhagic fever appears after an incubation of 3 days to 3 weeks. The first symptoms are fever accompanied by general and hemorrhagic signs leading to death in 50 to 90% of cases. During epidemics definition of cases permits prompt diagnosis. Due to the high risk of person-to-person and nosocomial transmission associated with Ebola hemorrhagic fever, management is based on isolation of patients and institution of protected care. Hands and soiled material are often decontaminated using sodium hypochlorite. Patient waste is decontaminated and incinerated. Treatment is essentially supportive. There is currently no vaccine available. Persons having been in close contact with patient should be kept under medical surveillance for 21 days. Recovering patients should use condoms for three months. Bodies of deceased patients should be handled by trained teams and buried quickly.
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Affiliation(s)
- D Nkoghé
- Ministère de la Santé Publique, Libreville, Gabon.
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35
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Hope KM, Tran PO, Zhou H, Oseid E, Leroy E, Robertson RP. 162 SWITCH-OFF HYPOTHESIS: AN EXPLANATION FOR THE DEFECTIVE GLUCAGON RESPONSE TO HYPOGLYCEMIA IN TYPE 1 DIABETES. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-162] [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]
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36
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Formenty P, Libama F, Epelboin A, Allarangar Y, Leroy E, Moudzeo H, Tarangonia P, Molamou A, Lenzi M, Ait-Ikhlef K, Hewlett B, Roth C, Grein T. [Outbreak of Ebola hemorrhagic fever in the Republic of the Congo, 2003: a new strategy?]. Med Trop (Mars) 2003; 63:291-5. [PMID: 14579469] [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: 04/27/2023]
Abstract
This article describes the last Ebola haemorrhagic fever (EHF) outbreak that occurred in the Cuvette Ouest Region of the Republic of Congo from January to April 2003. Epidemiological study demonstrated that the first patient, in whom diagnosis was made retrospectively, became ill on December 25, 2002. Subsequently until May 7, 2003, a total of 143 cases were recorded in the Mbomo and Kéllé health districts including 129 fatalities. Thirteen cases were laboratory confirmed and 130 were epidemiologically linked. Fifty-three percent of patients were male. Age ranged form 5 days to 80 years. Transmission involved direct contact with an infected person especially within families. Epidemiological data traced introduction of Ebola virus into the population to three primary cases mainly involving hunters. In all three cases development of the disease followed contact with non-human primates (gorillas) and other mammals (antelope) that had either been killed or found dead. Three health care workers were infected during the epidemic but nosocomial transmission played a minor role in the epidemic. On June 5, the Minister of Health and Population of the Congo Republic officially declared that the outbreak of EHF was over in the Cuvette Ouest Region. The last case was recorded on April 22 in the small village of Ndjoukou.
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Affiliation(s)
- P Formenty
- Département des Maladies transmissibles, Surveillance et Action, Organisation Mondiale de la Santé, Genève, Suisse.
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37
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Ananthanarayanan VS, Leroy E, Scheraga HA. Helix-Coil Transition in Mixed Solvents. I. Optical Rotatory Dispersion Study of Poly(γ-benzyl L-glutamate) in Dichloroacetic Acid-Dichloroethane Mixtures. Macromolecules 2002. [DOI: 10.1021/ma60034a017] [Citation(s) in RCA: 10] [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] [Indexed: 11/29/2022]
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38
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Georges-Courbot MC, Leroy E, Zeller H. [Ebola: a virus endemic to central Africa?]. Med Trop (Mars) 2002; 62:295-300. [PMID: 12244929] [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: 04/19/2023]
Abstract
From October 2001 to March 2002, an outbreak of Ebola haemorrhagic fever occurred in the North-Eastern Gabon (63 cases) and neighbouring Congo (57 cases). It was the fourth epidemic in North Eastern Gabon since 1994. Meanwhile this outbreak differed from the previous epidemics: at least five different emerging sources of the virus in the human population were observed from the local fauna resulting in fears of an endemic Ebola virus in the area. The control of the outbreak was uneasy because of the unfriendly attitude of the local population related to the restrictive measures for the isolation of suspected patients and the epidemiological surveillance. Such rejection process emphasizes the need of a continuous increasing public awareness.
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Affiliation(s)
- M C Georges-Courbot
- Centre National de Référence des Fièvres Hémorragiques Virales, Unité de Biologie des Infections virales émergentes, CRMPL, Laboratoire P4 Jean Mérieux, 21 Avenue Tony Garnier, 69365 Lyon.
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39
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Teive HA, Raskin S, Iwamoto FM, Germiniani FM, Baran MH, Werneck LC, Allan N, Quagliato E, Leroy E, Ide SE, Polymeropoulos MH. The G209A mutation in the alpha-synuclein gene in Brazilian families with Parkinson's disease. Arq Neuropsiquiatr 2001; 59:722-4. [PMID: 11593272 DOI: 10.1590/s0004-282x2001000500013] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A missense G209A mutation of the alpha-synuclein gene was recently described in a large Contursi kindred with Parkinson's disease (PD). The objective of this study is to determine if the mutation G209A of the alpha-synuclein gene was present in 10 Brazilian families with PD. PD patients were recruited from movement disorders clinics of Brazil. A family history with two or more affected in relatives was the inclusion criterion for this study. The alpha-synuclein G209A mutation assay was made using polymerase chain reaction and the restriction enzyme Tsp45I. Ten patients from 10 unrelated families were studied. The mean age of PD onset was 42.7 years old. We did not find the G209A mutation in our 10 families with PD. Our results suggest that alpha-synuclein mutation G209A is uncommon in Brazilian PD families.
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Affiliation(s)
- H A Teive
- Movement Disorders Unit, Neurological Service, Hospital de Clínicas, Federal University of Paraná, Curitiba, PR, Brasil.
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40
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Shortt K, Ross C, Seuntjens J, Delaunay F, Ostrowsky A, Gross P, Leroy E. Comparison of dosimetric standards of Canada and France for photons at 60Co and higher energies. Phys Med Biol 2001; 46:2119-42. [PMID: 11512615 DOI: 10.1088/0031-9155/46/8/307] [Citation(s) in RCA: 11] [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] [Indexed: 11/12/2022]
Abstract
We report the results of a comparison of the dosimetric standards of Canada and France for photon beams at 60Co and a few higher energies. The present primary standard of absorbed dose to water for NRC, Canada is based on measurements made with a sealed water calorimeter. The corresponding standard of the LNHB, France is based on measurements made with a graphite calorimeter at 60Co energy and transferred to absorbed dose to water for 60Co and higher-energy photon beams using both ion chambers and Fricke dosemeters as transfer instruments. To make this comparison, we used three graphite-walled NE2571 Farmer chambers. The absorbed dose to water determined by the LNHB was greater than that determined by NRC by 0.20% at 60Co energy. This difference is not significant given the uncertainties on the standards. In order to do the comparison for higher-energy photons, we interpolated the NRC data set at the beam qualities used at the LNHB. When %dd(10)x is used as the method of specifying beam quality, the determination of absorbed dose to water by the LNHB is about 0.2% greater than that determined by NRC and consistent with the results at 60Co. However, when using TPR20,10 as the beam quality specifier, the LNHB determination is greater than the NRC's determination by 0.8% and 1.2% at 12 and 20 MV respectively. This discrepancy, which systematically increases with increasing energy, eventually exceeds the uncertainties in the ratio of the standards, estimated to be 0.7%. This underscores the importance of selecting the method of specifying beam quality, either %dd(10)x or TPR20,10, at least for the 'soft' beams used by NRC in this comparison. In the case of the air kerma standards, which were also compared at 60Co energy, the LNHB determination was greater than NRC's by 0.14%, which is not significant given the uncertainties on the standards.
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Affiliation(s)
- K Shortt
- National Research Council, Ottawa, Canada.
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41
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Simon F, Souquière S, Damond F, Kfutwah A, Makuwa M, Leroy E, Rouquet P, Berthier JL, Rigoulet J, Lecu A, Telfer PT, Pandrea I, Plantier JC, Barré-Sinoussi F, Roques P, Müller-Trutwin MC, Apetrei C. Synthetic peptide strategy for the detection of and discrimination among highly divergent primate lentiviruses. AIDS Res Hum Retroviruses 2001; 17:937-52. [PMID: 11461679 DOI: 10.1089/088922201750290050] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We developed a simple, rapid, inexpensive, and highly sensitive and specific strategy for the detection and lineage differentiation of primate lentiviruses (PIV-ELISA). It is based on the use of two indirect ELISA methods using synthetic peptides mapping the gp41/36 region (detection component) and the V3 region (differentiation component) of four lentivirus lineages, namely SIVcpz/HIV-1 (groups M, O, N, and SIVcpz-gab), SIVmnd, SIVagm, and SIVsm/SIVmac/HIV-2. This strategy was evaluated with panels of sera originating from both humans and nonhuman primates. The human reference panel consisted of 144 HIV Western blot (WB)-positive sera in which the corresponding virus had been genotyped (HIV-1: 72 group M, 28 group O, and 6 group N; HIV-2: 21 subtype A and 10 subtype B; and 7 HIV-1+2) and 105 HIV WB-negative samples. The nonhuman primate reference panel consisted of 24 sera from monkeys infected by viruses belonging to the four lineages included in the PIV-ELISA strategy (5 chimpanzees, 5 macaques, 8 mandrills, and 6 vervets) and 42 samples from seronegative animals. Additional field evaluation panels consisted of 815 human sera from Gabon, Cameroon, and France and 537 samples from 25 nonhuman primate species. All the samples from the two reference panels were correctly detected and discriminated by PIV-ELISA. In the human field evaluation panel, the gp41/36 component correctly identified all the test samples, with 98% specificity. The V3 component discriminated 206 HIV-1 group M, 98 group O, 12 group M+O, and 128 HIV-2 sera. In the primate field evaluation panel, both gp41/36 and V3 detected and discriminated all the WB-positive samples originating from monkeys infected with SIVcpz, SIVagm-ver, SIVmnd-1, SIVmnd-2, SIVdrl, or SIVsun. These results were confirmed by genotyping in every case. Four SIV-infected red-capped mangabeys (confirmed by PCR) were correctly identified by gp41/36, but only two reacted with the V3 peptides in the absence of a specific SIVrcm V3 peptide. Addition of a V3 SIVrcm peptide discriminated all the SIVrcm-positive samples. Fourteen Papio papio samples were positive for SIVsm gp 36 and by WB, but negative by PCR, whereas three Papio cynocephalus samples were positive by gp41/36 but indeterminate by WB and negative by PCR. This combined ELISA system is thus highly sensitive and specific for antibodies directed against HIV and SIV. In addition, the V3-based serotyping results always agreed with genotyping results. This method should prove useful for studies of lentivirus prevalence and diversity in human and nonhuman primates, and may also have the potential to detect previously undescribed SIVs.
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Affiliation(s)
- F Simon
- Laboratoire de Virologie and Centre de Primatologie, Centre International de Recherches Médicales, Franceville, Gabon
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Abstract
A new nucleation method to form diamond by chemically pretreating silicon (111) surfaces is reported. The nucleation consists of binding covalently 2,2-divinyladamantane molecules on the silicon substrate. Then low-pressure diamond growth was performed for 2 h via microwave plasma CVD in a tubular deposition system. The resulting diamond layers presented a good cristallinity and the Raman spectra showed a single very sharp peak at 1331 cm(-1), indicating high-quality diamonds.
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Affiliation(s)
- A Giraud
- Contribution from the Institute of Chemistry and Institute of Physics, Fribourg University, Pérolles, CH-1700 Fribourg, Switzerland
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43
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Torres R, Leroy E, Hu X, Katrivanou A, Gourzis P, Papachatzopoulou A, Athanassiadou A, Beratis S, Collier D, Polymeropoulos MH. Mutation screening of the Wolfram syndrome gene in psychiatric patients. Mol Psychiatry 2001; 6:39-43. [PMID: 11244483 DOI: 10.1038/sj.mp.4000787] [Citation(s) in RCA: 31] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Wolfram syndrome, a rare autosomal recessive neurodegenerative disorder, was originally described as a combination of familial juvenile-onset diabetes mellitus and optic atrophy. It was later demonstrated that Wolfram syndrome patients were highly prone to psychiatric disorders. Mutations in exon 8 of the Wolfram syndrome gene account for 88% of the patients with Wolfram syndrome. To examine whether the gene responsible for causing Wolfram syndrome is involved in psychiatric disorders, we screened exon 8 of the Wolfram syndrome gene for mutations in 119 patients with schizophrenia, one patient with schizoaffective disorder, 12 patients with bipolar disorder and 15 patients with major depression, using sequence analysis. In Wolfram syndrome patients, this gene has been shown to have primarily nonsense or frameshift mutations, which would result in a premature truncation of the protein. None of the psychiatric patients screened in this study carried these types of mutations. We identified, however, 24 new variations whose significance remains to be determined.
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Affiliation(s)
- R Torres
- Novartis Pharmaceuticals Corporation, Pharmacogenetics, Gaithersburg, MD 20878, USA
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Wintermeyer P, Krüger R, Kuhn W, Müller T, Woitalla D, Berg D, Becker G, Leroy E, Polymeropoulos M, Berger K, Przuntek H, Schöls L, Epplen JT, Riess O. Mutation analysis and association studies of the UCHL1 gene in German Parkinson's disease patients. Neuroreport 2000; 11:2079-82. [PMID: 10923647 DOI: 10.1097/00001756-200007140-00004] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.1] [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: 10/26/2022]
Abstract
Recently, an Ile93Met substitution has been identified in the ubiquitin carboxy-terminal hydrolase L1 (UCHL1) gene in a single German PD family with autosomal dominant inheritance. To determine whether mutations in the UCHL1 gene are causative for Parkinson's disease (PD) a detailed mutation analysis was performed in a large sample of German sporadic and familial PD patients. We found no disease-causing mutation in the coding region of the UCHL1 gene. Direct sequencing revealed six intronic polymorphisms in the UCHL1 gene. Analysis of an S18Y polymorphism in exon 3 of the UCHL1 gene in sporadic PD patients and controls showed carriers of allele 2 (tyrosine) significantly less frequent in patients with a reduced risk of 0.57 (CI = 0.36-0.88; p = 0.012, p(c) = 0.047, chi2 = 6.31). Our study shows that sequence variations in the coding region of UCHL1 are a rare event. A protective effect of a certain UCHL1 variant in the pathogenesis of sporadic PD is suggested, underlining the relevance of UCHL1 in neurodegeneration.
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Affiliation(s)
- P Wintermeyer
- Department of Molecular Human Genetics, Ruhr-University Bochum, Germany
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45
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Abstract
[reaction: see text] (1R,2S,3S,4R,5R)-4-Amino-5-(hydroxymethyl)cyclopentane-1,2,3-triol 1, prepared from D-glucose, inhibits beta-glucosidases from Caldocellum saccharolyticum (Ki = 1.8 x 10(-7) M) and from almonds (Ki = 3.4 x 10(-6) M). Inhibition is not influenced by N-ethylation (--> 15) but is strongly reduced upon N-acetylation (--> 12). Inversion of stereochemistry at C(5) (--> 14) has little effect on inhibition of beta-glucosidases. These experiments suggest that 1 acts as an analogue of a protonated beta-glucoside.
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Affiliation(s)
- O Boss
- Department of Chemistry and Biochemistry, University of Bern, Switzerland
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46
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Piétu G, Eveno E, Soury-Segurens B, Fayein NA, Mariage-Samson R, Matingou C, Leroy E, Dechesne C, Krieger S, Ansorge W, Reguigne-Arnould I, Cox D, Dehejia A, Polymeropoulos MH, Devignes MD, Auffray C. The genexpress IMAGE knowledge base of the human muscle transcriptome: a resource of structural, functional, and positional candidate genes for muscle physiology and pathologies. Genome Res 1999; 9:1313-20. [PMID: 10613854 PMCID: PMC310996] [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: 02/15/2023]
Abstract
Sequence, gene mapping, and expression data corresponding to 910 genes transcribed in human skeletal muscle have been integrated to form the muscle module of the Genexpress IMAGE Knowledge Base. Based on cDNA array hybridization, a set of 14 transcripts preferentially or specifically expressed in muscle have been selected and characterized in more detail: Their pattern of expression was confirmed by Northern blot analysis; their structure was further characterized by full-insert cDNA sequencing and cDNA extension; the map location of the corresponding genes was refined by radiation hybrid mapping. Five of the 14 selected genes appear as interesting positional and functional candidate genes to study in relation with muscle physiology and/or specific orphan muscular pathologies. One example is discussed in more detail. The expression profiling data and the associated Genexpress Index2 entries for the 910 genes and the detailed characterization of the 14 selected transcripts are available from a dedicated Web server at. The database has been organized to provide the users with a working space where they can find curated, annotated, integrated data for their genes of interest. Different navigation routes to exploit the resource are discussed.
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Affiliation(s)
- G Piétu
- Genexpress, Centre National de la Recherche Scientifique (CNRS) ERS 1984, 94801 Villejuif, France.
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Abstract
[reaction: see text] (1S,2S,3S,4R,5R)-4-amino-5-(hydroxymethyl)cyclopentane-1,2,3-triol 1 is prepared stereoselectively from D-lyxose and displays anomer-selective inhibition for beta-galactosidase (Ki = 3.0 x 10(-6) M) and beta-glucosidase (Ki = 1.5 x 10(-7) M), over alpha-galactosidase (Ki = 2.3 x 10(-5) M) and alpha-glucosidase (IC50 = 1.0 x 10(-4) M). There is no observable cross-reactivity with alpha-mannosidase, beta-mannosidase, or alpha-L-fucosidase.
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Affiliation(s)
- E Leroy
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
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48
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Athanassiadou A, Voutsinas G, Psiouri L, Leroy E, Polymeropoulos MH, Ilias A, Maniatis GM, Papapetropoulos T. Genetic analysis of families with Parkinson disease that carry the Ala53Thr mutation in the gene encoding alpha-synuclein. Am J Hum Genet 1999; 65:555-8. [PMID: 10417297 PMCID: PMC1377953 DOI: 10.1086/302486] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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49
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Lavedan C, Buchholtz S, Auburger G, Albin RL, Athanassiadou A, Blancato J, Burguera JA, Ferrell RE, Kostic V, Leroy E, Leube B, Mota-Vieira L, Papapetropoulos T, Pericak-Vance MA, Pinkus J, Scott WK, Ulm G, Vasconcelos J, Vilchez JJ, Nussbaum RL, Polymeropoulos MH. Absence of mutation in the beta- and gamma-synuclein genes in familial autosomal dominant Parkinson's disease. DNA Res 1998; 5:401-2. [PMID: 10048491 DOI: 10.1093/dnares/5.6.401] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- C Lavedan
- Genetic Disease Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.
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50
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Affiliation(s)
- E Leroy
- Genetic Disease Research Branch, NHGRI, NIH, Bethesda, MD 20892, USA.
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