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Mesnil M, Ranisavljevic N, Brouillet S, Ducrocq B, Reignier A, Yazbeck C, Metzler-Guillemain C, Ohl J, Brunet L, Letur H, Ravel C. [EUGIC (Extension of the Use of Gametes in Intra-Conjugal): New uses of gametes within the couple]. Gynecol Obstet Fertil Senol 2023; 51:200-205. [PMID: 36681149 DOI: 10.1016/j.gofs.2023.01.008] [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] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/11/2023] [Accepted: 01/15/2023] [Indexed: 01/19/2023]
Abstract
OBJECTIVE New possibilities for using gametes within a couple were created by the French law of August 2, 2021 related to bioethics by opening Assisted Reproductive Technics (ART) to all women. It concerns previously self-preserved gametes, thus avoiding the need for gamete donation. The objective of our study is to evaluate the perception of these new uses by ART practitioners. METHOD A questionnaire of twelve short questions was sent to professionals concerned with gamete donation. RESULTS One hundred and ten professionals answered the questionnaire. The majority of them approve of the Reception of Oocytes from the Partner (ROPA), notably if there is a medical indication. Requests are rarer for the care of trans* people, and raise more questions. Although less favorable to the use of eggs from trans* men, more of them support the practice when it is an alternative to oocyte donation. CONCLUSION The acronym EUGIC (Extension of the Use of Gametes in Intra-Conjugal) makes it possible to group together these new situations generated by the change in the French law.
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Affiliation(s)
- M Mesnil
- IODE, UMR CNRS 6262, université de Rennes 1, Rennes, France
| | - N Ranisavljevic
- CHU de Montpellier, service de gynécologie, hôpital Arnaud-de-Villeneuve, Montpellier, France
| | - S Brouillet
- CHU de Montpellier, laboratoire de biologie de la reproduction-CECOS, hôpital Arnaud-de-Villeneuve, Montpellier, France
| | - B Ducrocq
- CHU de Lille, institut de biologie de la reproduction, CECOS Nord Lille CHRU de Lille, hôpital Calmette, Lille, France
| | - A Reignier
- Biologie de la reproduction, DPI, CECOS, CHU de Nantes, UFR médecine, université de Nantes, Inserm UMR 1064, Nantes, France
| | - C Yazbeck
- CMC Ambroise Paré Hartmann Cherest, Neuilly Sur Seine, France; Institut médical Reprogynes, 75116 Paris, France
| | - C Metzler-Guillemain
- Assistance publique-Hôpitaux de Marseille (AP-HM), pôle Femmes-Parents-Enfants, centre clinico-biologique AMP-CECOS, Marseille, France
| | - J Ohl
- AMP clinique, CHU de Strasbourg, 1, place de l'hôpital, 67091 Strasbourg cedex, France
| | - L Brunet
- Institut des sciences juridique et philosophique de La Sorbonne, université Paris 1 (UMR 8103), France
| | - H Letur
- Service de gynécologie obstétrique et médecine de la reproduction, hôpital Foch, Suresnes et service d'AMP et préservation de la fertilité - polyclinique de Navarre - Pau, France
| | - C Ravel
- CHU de Rennes, service de biologie de la reproduction-CECOS, 35000 Rennes, France.
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Bujan L, Nouri N, Papaxanthos-Roche A, Ducrocq B, Brugnon F, Ravel C, Rives N, Teletin M, Drouineaud V, Delepine B, Berthaut I, Metzler-Guillemain C, Devaux A, Frapsauce C, Thibault E, Blagosklonov O, Clarotti MA, Diligent C, Loup Cabaniols V, Fauque P, Benchaib M, Eustache F, Daudin M. Motivations and personality characteristics of candidate sperm and oocyte donors according to parenthood status: a national study from the french CECOS network. Hum Reprod Open 2022; 2022:hoac042. [PMID: 36382009 PMCID: PMC9641712 DOI: 10.1093/hropen/hoac042] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 07/20/2022] [Indexed: 12/03/2022] Open
Abstract
STUDY QUESTION In a non-commercial national gamete donation programme, do the motivations and personality characteristics of candidate sperm and oocyte donors differ according to their parenthood status? SUMMARY ANSWER Moderate differences exist between non-parent and parent candidate donors in motivations for gamete donation and representations as well as in personality characteristics. WHAT IS KNOWN ALREADY Several studies have analysed the motivations and experiences of oocyte or sperm donors, but mainly in countries where gamete donation is a commercial transaction, and very few studies have reported results of personality traits using personality inventory tests. No study has specifically investigated the motivations and personality characteristics of candidate gamete donors according to parenthood status. STUDY DESIGN, SIZE, DURATION A prospective study was carried out including 1021 candidate donors from 21 centres (in university hospitals) of the national sperm and egg banking network in France between November 2016 and December 2018. PARTICIPANTS/MATERIALS, SETTING, METHODS In total, 1021 candidate gamete donors were included in the study. During their first visit, male (n = 488) and female candidate donors (n = 533) completed a questionnaire on sociodemographic characteristics, their motivations for donation and their representations of donation, infertility and family. Secondly, a NEO Personality Inventory (NEO-PI-R) exploring the Big Five personality traits was completed online. Results were compared between parent and non-parent candidate donors. MAIN RESULTS AND THE ROLE OF CHANCE Altruistic values were the principal motive for donation irrespective of parenthood status. Reassurance about their fertility or preservation of sperm for future use was more often reported in non-parent than in parent candidate donors. With regard to representation of gamete donation or of the family, independently of their parenthood status, candidate donors more frequently selected social rather than biological representations. Mean personality characteristics were in the normal range. Non-parent candidate donors had higher scores on openness and depression than parents, while parent candidate donors appeared more social than non-parents. LIMITATIONS, REASONS FOR CAUTION The personality characteristics inventory was not completed by all candidate donors included in the study. However, family status did not differ between the two groups (NEO-PI-R completed (n = 525) or not), while the group who completed the NEO-PI-R had a higher educational level. This national study was performed in a country where gamete donation is subject to strict legislation. WIDER IMPLICATIONS OF THE FINDINGS In a global context where reproductive medicine is commercialized and gamete donor resources are limited, this study found that altruism and social representations of gamete donation and family are the main motivations for gamete donation in a country which prohibits financial incentive. These findings are relevant for health policy and for gamete donation information campaigns. STUDY FUNDING/COMPETING INTEREST(S) Grant from the Agence de la Biomédecine, France. The authors have nothing to disclose related to this study. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- L Bujan
- CHU de Toulouse CECOS—Service de Médecine de la Reproduction, , Toulouse, France
- DEFE UMR Inserm 1203, Universités de Montpellier et Toulouse , Toulouse, France
| | - N Nouri
- CHU de Toulouse CECOS—Service de Médecine de la Reproduction, , Toulouse, France
- DEFE UMR Inserm 1203, Universités de Montpellier et Toulouse , Toulouse, France
| | - A Papaxanthos-Roche
- Service de Biologie de la Reproduction, CECOS de Bordeaux , CHU Bordeaux, France
| | - B Ducrocq
- Hôpital Calmette, CHU Lille CECOS Nord, , France, Lille
| | - F Brugnon
- CHU Clermont-Ferrand AMP-CECOS Clermont-Ferrand, , France, Clermont-Ferrand
- Université Clermont Auvergne INSERM 1240, , Clermont-Ferrand, France
| | - C Ravel
- CHU Rennes CECOS Rennes, , France, Rennes
| | - N Rives
- Rouen University Hospital EA 4308 Gametogenesis and Gamete Quality, , Biology of Reproduction-CECOS Laboratory, Rouen, France
| | - M Teletin
- CHRU de Strasbourg CECOS Alsace, , France, Schiltigheim
| | - V Drouineaud
- Service de Biologie de la Reproduction-CECOS, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris , Paris, France
| | - B Delepine
- CHU de Reims CECOS Champagne-Ardenne, Service de Biologie de la Reproduction, , Reims, France
| | - I Berthaut
- Service de Biologie de la Reproduction-CECOS, Hôpital Tenon, AP-HP, Sorbonne Université , Paris, France
- INSERM UMRS 938, Centre de Recherche Saint-Antoine , Paris, France
| | - C Metzler-Guillemain
- Centre Clinico-Biologique AMP-CECOS Assistance-Publique, des Hôpitaux de Marseille, La Conception, , Marseille, France
| | - A Devaux
- CHU Picardie CECOS Amiens, , France, Amiens
| | - C Frapsauce
- CECOS Centre Tours, CHRU Hôpitaux de Tours , Tours, France
| | - E Thibault
- CECOS Provence-Alpes-Côte d’Azur, CHU de Nice , Nice, France
| | - O Blagosklonov
- CECOS Franche-Comté Bourgogne Besançon, CHU Jean Minjoz , Besançon, France
| | - M A Clarotti
- CECOS Caen Basse Normandie, CHU Caen , Caen, France
| | - C Diligent
- CECOS de Nancy, Centre d'AMP, CHRU de Nancy , Nancy, France
| | - V Loup Cabaniols
- CECOS Languedoc Roussillon Montpellier, CHU Montpellier , Montpellier, France
| | - P Fauque
- CECOS Franche-Comté Bourgogne, CHU Dijon , Dijon, France
| | - M Benchaib
- CECOS Rhône-Alpes Lyon, Hospices Civils de Lyon , Bron, France
| | - F Eustache
- CECOS Paris-Jean Verdier, AP-HP , Bondy, France
| | - M Daudin
- CHU de Toulouse CECOS—Service de Médecine de la Reproduction, , Toulouse, France
- DEFE UMR Inserm 1203, Universités de Montpellier et Toulouse , Toulouse, France
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Brouillet S, Ducrocq B, Mestres S, Guillemain C, Ravel C, Reignier A. [Fertility preservation and access to medically assisted reproduction for Trans people: Guidelines from French Professional Association for Transgender Health]. Gynecol Obstet Fertil Senol 2022; 50:682-688. [PMID: 35750197 DOI: 10.1016/j.gofs.2022.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Many health care professionals are dealing with the issue of transgender people in their medical practice. In the field of reproduction, Trans people can benefit from fertility preservation before the introduction of hormonal treatment or surgery altering their fertility. This article, which is the result of a collaborative work of several reproductive professionals involved in the health of Trans people, provides an overview of the possibilities of fertility preservation and medically assisted reproduction techniques in France for Trans people.
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Affiliation(s)
- S Brouillet
- Inserm 1203 DEFE, département de biologie de la reproduction, CHU de Montpellier, université de Montpellier, Montpellier, France
| | - B Ducrocq
- CECOS, CHU de Lille, institut de biologie de la reproduction, Lille, France
| | - S Mestres
- Assistance médicale à la procréation, CECOS, CHU de Clermont-Ferrand, CHU d'Estaing, Clermont-Ferrand, France
| | - C Guillemain
- Pôle femmes-parents-enfants, centre clinicobiologique d'assistance médicale à la procréation - CECOS, APHM, hôpital La Conception, 13385 Marseille cedex 5, France
| | - C Ravel
- Inserm, service de biologie de la reproduction - CECOS, EHESP, CHU de Rennes, université Rennes, Irset (institut de recherche en santé, environnement et travail) - UMR_S 1085, 35000 Rennes, France
| | - A Reignier
- Inserm, biologie et médecine de la reproduction et gynécologie médicale, centre de recherche en transplantation et immunologie, UMR 1064, CHU de Nantes, Nantes université, Nantes, France.
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Richard C, Pourchasse M, Freton L, Esvan M, Ravel C, Peyronnet B, Mathieu R, Chhor S. Male contraception: What do women think? Prog Urol 2021; 32:276-283. [PMID: 34924309 DOI: 10.1016/j.purol.2021.11.003] [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: 10/06/2021] [Revised: 10/29/2021] [Accepted: 11/21/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Women currently bear the most responsibility in contraception, with a wide choice of methods, while only a few existing male contraceptives are available. However, it has been shown that men are willing to get involved in birth control and to control their own fertility. Our research was focused on female population and a survey was carried out to explore women's perceptions of male contraception. METHODS An observational quantitative cross-sectional study using a self-administered-questionnaire was carried out between November 2019 and February 2020. All women aged from 16-years-old to menopause completing the questionnaire were included. Descriptive statistical analyses were conducted, qualitative variables were expressed as counts and frequency. RESULTS In total, 379 interpretable completed questionnaires were included. Among the women, 69.7% were in favour of letting men deal with contraception, without referring to a specific method. After having been made aware of the medical information concerning existing male contraceptives and those in development, the proportion of women in favour dropped to 46.7%. The most acceptable method for a majority of women was the male pill, which is still being developed. The majority (78.4%) of the women in our survey felt insufficiently informed about male contraception. DISCUSSION In our study, women seemed to want to share contraceptive responsibility with men, but the lack of information and of acceptable contraception methods available remained an obstacle. Although larger-scale studies are needed to confirm these results, the development of a wider range of male contraception methods seems to be what both men and women have long been expecting.
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Affiliation(s)
- C Richard
- Department of Urology, University of Rennes, Rennes, France.
| | - M Pourchasse
- Department of General Medicine, University of Rennes, Rennes, France
| | - L Freton
- Department of Urology, University of Rennes, Rennes, France
| | - M Esvan
- Clinical Investigation Department, University of Rennes, Rennes, France
| | - C Ravel
- CECOS, University of Rennes, Rennes, France
| | - B Peyronnet
- Department of Urology, University of Rennes, Rennes, France
| | - R Mathieu
- Department of Urology, University of Rennes, Rennes, France
| | - S Chhor
- Department of General Medicine, University of Rennes, Rennes, France; Clinical Investigation Department, University of Rennes, Rennes, France
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Bertho S, Neyroud AS, Brun T, Jaillard S, Bonnet F, Ravel C. Anti-Müllerian hormone: A function beyond the Müllerian structures. Morphologie 2021; 106:252-259. [PMID: 34924282 DOI: 10.1016/j.morpho.2021.11.002] [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: 06/10/2021] [Revised: 11/11/2021] [Accepted: 11/14/2021] [Indexed: 10/19/2022]
Abstract
The anti-Müllerian hormone (AMH) is a heterodimeric glycoprotein belonging to the TGFb superfamily implicated in human embryonic development. This hormone was first described as allowing regression of the epithelial embryonic Müllerian structures in males, which would otherwise differentiate into the uterus and fallopian tubes. It activates a signaling pathway mediated by two transmembrane receptors. Binding of AMH to its receptor induces morphological changes leading to the degeneration of Müllerian ducts. Recently, new data has shown the role played by this hormone on structures other than the genital tract. If testicular AMH expression decreases in humans over the course of a lifetime, synthesis may persist in other tissues in adulthood. The mechanisms underlying its production have been unveiled. The aim of this review is to describe the different pathways in which AMH has been identified and plays a pivotal role.
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Affiliation(s)
- S Bertho
- CHU Rennes, Département de Gynécologie-Obstétrique-Reproduction-CECOS, 35000 Rennes, France.
| | - A S Neyroud
- CHU Rennes, Département de Gynécologie-Obstétrique-Reproduction-CECOS, 35000 Rennes, France; Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, 35000 Rennes, France
| | - T Brun
- CHU Rennes, Département de Gynécologie-Obstétrique-Reproduction-CECOS, 35000 Rennes, France
| | - S Jaillard
- CHU Rennes, Département de Gynécologie-Obstétrique-Reproduction-CECOS, 35000 Rennes, France; Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, 35000 Rennes, France
| | - F Bonnet
- CHU Rennes, Service d'Endocrinologie, 35000 Rennes, France
| | - C Ravel
- CHU Rennes, Département de Gynécologie-Obstétrique-Reproduction-CECOS, 35000 Rennes, France; Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, 35000 Rennes, France
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Richard C, Pourchasse M, Freton L, Esvan M, Ravel C, Peyronnet B, Mathieu R, Chhor S. Contraception masculine : qu’en pensent les femmes ? Prog Urol 2021. [DOI: 10.1016/j.purol.2021.08.214] [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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Neyroud AS, Rolland A, Evrard B, Alary N, Dejucq-Rainsford N, Jégou B, Bujan L, Ravel C, Chalmel F. P–055 Methylation dynamics of the sperm epigenome after chemotherapy: a case study. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Study question
What is the evolution of the sperm epigenome after chemotherapy in a patient with testicular cancer (TC)?
Summary answer
These new data on epigenetic recovery profil after TC are useful tools for counseling and reassuring these patients.
What is known already
An important issue for young men affected TC is how TC and its treatment will affect, transiently or permanently, their future reproductive health. The consequences of cancer treatment on the sperm epigenome during the recovery periods are topical issues of ascendant significance as epigenetic modifications to the paternal genome may have deleterious effects on the offspring.
Study design, size, duration
Here we report the epigenomic profiling of frozen sperm from a TC patient before and after the treatment at different time points (6, 9, 12 and 24 months) by using RRBS analysis (Reduced representation bisulfite sequencing method).
Participants/materials, setting, methods
A testicular tumor (testicular germ cell tumor) was diagnosed in a 30 years old patient. A cryopreservation of spermatozoa was proposed before treatment.Semen samples were obtained 2 times before treatment and 4 times after treatment (6, 9, 12 and 24 months following the initiation of treatment).
Main results and the role of chance
Upon collection, sampling after chemotherapy ranged from 0,6 to 4,2 million per sperm straw between 6 and 24 months after the treatment, always increasing.
In order to capture the direct effect of the treatment on the methylation changes, the DMR detection has been operated between pre-chemotherapy samples (pair-wise) and the time point of 6 months. Among the 179 hqDMRs, 74 are differentially methylated between the PreCT and PostCT6m samples (16 hyper- and 68 hypo-methylated) associated with 49 DMGs (15 hyper- and 34 hypo-methylated).
We further sub-clustered the 74 hqDMRs between PreCT and PostCT6m into 6 patterns, 3 hyper- and 3 hypo-methylated. Briefly, patterns P1 and P4 include hqDMRs that quickly get back to their pre-treatment methylation status just after 9th months onwards. Patterns P2 and P5 include hqDMRs that slowly get back to their pre-treatment methylation status between 12 and 24 months after treatment. Patterns P3 and P6 include hqDMRs that remain hyper- or hypo-methylated even after 24 months.
We have intersected the genes (DMGs) associated with the detected hqDMRs with those known to be important or expressed during embryogenesis. We thus detected that 7 hyper-methylated and 6 hypomethylated DMGs were involved (or expressed) during embryonic / fetal development.
Limitations, reasons for caution
This study involves a single patient. As the patient made no major changes in his personal way of life, we hypothesized that sperm parameter variations may be attributable to the BEP treatment.
Wider implications of the findings: The altered methylated status of those DMGs important for early development might modify their expression pattern and thus affect their function during key stages of embryogenesis leading to potential developmental disorders. It is important to notice that among the 110 DMGs none of them correspond to known imprinted genes.
Trial registration number
Not applicable
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Affiliation(s)
- A S Neyroud
- CHU de Rennes, Biology of reproduction, rennes, France
| | - A Rolland
- Univ Rennes- Inserm- EHESP- Irset Institut de recherche en santé- environnement et travail - UMR_S 1085- F–35000 Rennes- France., Inserm, Rennes, France
| | - B Evrard
- Univ Rennes- Inserm- EHESP- Irset Institut de recherche en santé- environnement et travail - UMR_S 1085- F–35000 Rennes- France., Inserm, Rennes, France
| | - N Alary
- Univ Rennes- Inserm- EHESP- Irset Institut de recherche en santé- environnement et travail - UMR_S 1085- F–35000 Rennes- France., Inserm, Rennes, France
| | - N Dejucq-Rainsford
- Univ Rennes- Inserm- EHESP- Irset Institut de recherche en santé- environnement et travail - UMR_S 1085- F–35000 Rennes- France., Inserm, Rennes, France
| | - B Jégou
- Univ Rennes- Inserm- EHESP- Irset Institut de recherche en santé- environnement et travail - UMR_S 1085- F–35000 Rennes- France., Inserm, Rennes, France
| | - L Bujan
- CHU de Toulouse, Biology of reproduction, Toulouse, France
| | - C Ravel
- CHU de Rennes, Biology of reproduction, rennes, France
| | - F Chalmel
- Univ Rennes- Inserm- EHESP- Irset Institut de recherche en santé- environnement et travail - UMR_S 1085- F–35000 Rennes- France., Inserm, Rennes, France
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Pasquier G, Zribi A, Lami P, Demar M, Marty P, Buffet P, Bastien P, Ravel C, Lachaud L. Épidémiologie des leishmanioses sur le territoire français de 1998 à 2020. Infect Dis Now 2021. [DOI: 10.1016/j.idnow.2021.06.036] [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: 11/17/2022]
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Freton L, Khene ZE, Richard C, Mathieu R, Alimi Q, Duval E, Vassal L, Bertheuil N, Aillet S, Bonnet F, Ravel C, Guenego A, Travers D, Morel-Journel N, Hascoet J, Peyronnet B. [Self-assessment of healthcare workers regarding the management of trans people in a university hospital]. Prog Urol 2021; 31:1108-1114. [PMID: 34147357 DOI: 10.1016/j.purol.2021.03.008] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/15/2021] [Accepted: 03/08/2021] [Indexed: 01/26/2023]
Abstract
INTRODUCTION Trans people face more barriers when seeking healthcare than the cisgender population probably due to a lack of knowledge, education and comfort of healthcare workers. The purpose of this study was to assess the knowledge and comfort felt by healthcare professionals in managing trans people in a French university hospital. METHODS A self-questionnaire was emailed to healthcare professionals working in departments usually involved in the care of trans people in a French university hospital "not specialized" in medical and surgical gender transition. The questionnaire included demographic questions and Likert scales regarding their knowledge and comfort in taking care of trans people. Responses on the 7-point Likert scales were categorized into "low", "medium" and "high" groups, and responses on the 5-point Likert scales were categorized into "in favour", "neutral" and "against" groups. RESULTS One hundred and two (29%) healthcare professionals answered the questionnaire. Half worked in surgical departments (urology, plastic surgery, gynecology), 24% worked in medical departments (endocrinology, reproductive medicine, cytogenetics) and 26% worked in psychiatry. The majority (60.3%) rated their level of knowledge as "low" and 39.7% as "medium". Sixteen percent rated their level of comfort in managing trans people as "low", 72.5% as "medium" and 11.5% as "high". A majority (77.5%) were in favor of having the costs of gender transition care covered by the national health insurance system, 16.4% were neutral and 6% were against this idea. Feelings about surgical and hormonal gender transition were overwhelmingly (96.4%) in favour or neutral and 91% were willing to get more training and education to manage trans people. CONCLUSION The lack of comfort felt by healthcare professionals in university hospital in managing trans people seems to be related to a lack of knowledge and training in that field and not to a disagreement with the need of transgender healthcare. LEVEL OF EVIDENCE 3.
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Affiliation(s)
- L Freton
- Université de Rennes, urologie, CHU Rennes, Rennes, France.
| | - Z-E Khene
- Université de Rennes, urologie, CHU Rennes, Rennes, France
| | - C Richard
- Université de Rennes, urologie, CHU Rennes, Rennes, France
| | - R Mathieu
- Université de Rennes, urologie, CHU Rennes, Rennes, France
| | - Q Alimi
- Université de Rennes, urologie, CHU Rennes, Rennes, France
| | - E Duval
- Réseau de Santé Trans, Rennes, France
| | - L Vassal
- Réseau de Santé Trans, Rennes, France
| | - N Bertheuil
- Université de Rennes, chirurgie plastique et reconstructrice, CHU Rennes, Rennes, France
| | - S Aillet
- Université de Rennes, chirurgie plastique et reconstructrice, CHU Rennes, Rennes, France
| | - F Bonnet
- Université de Rennes, endocrinologie, CHU Rennes, Rennes, France
| | - C Ravel
- Université de Rennes, laboratoire de biologie de la reproduction-CECOS, CHU Rennes, Rennes, France
| | - A Guenego
- Université de Rennes, endocrinologie, CHU Rennes, Rennes, France
| | - D Travers
- Université de Rennes, psychiatrie, CHU Rennes, Rennes, France
| | - N Morel-Journel
- Université de Lyon, urologie, Hospices Civils de Lyon, Lyon, France
| | - J Hascoet
- Université de Rennes, urologie, CHU Rennes, Rennes, France
| | - B Peyronnet
- Université de Rennes, urologie, CHU Rennes, Rennes, France
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Yefimova MG, Lefevre C, Bashamboo A, Eozenou C, Burel A, Lavault MT, Meunier AC, Pimentel C, Veau S, Neyroud AS, Jaillard S, Jégou B, Bourmeyster N, Ravel C. Granulosa cells provide elimination of apoptotic oocytes through unconventional autophagy-assisted phagocytosis. Hum Reprod 2021; 35:1346-1362. [PMID: 32531067 DOI: 10.1093/humrep/deaa097] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 05/13/2019] [Revised: 03/14/2020] [Indexed: 12/30/2022] Open
Abstract
STUDY QUESTION Do human granulosa cells (GCs) ingest and destroy apoptotic oocytes? SUMMARY ANSWER Somatic GCs ingest and destroy apoptotic oocytes and other apoptotic substrates through unconventional autophagy-assisted phagocytosis. WHAT IS KNOWN ALREADY Most (99%) ovarian germ cells undergo apoptosis through follicular atresia. The mode of cleaning of atretic follicles from the ovary is unclear. Ovarian GCs share striking similarities with testicular Sertoli cells with respect to their origin and function. Somatic Sertoli cells are responsible for the elimination of apoptotic spermatogenic cells through unconventional autophagy-assisted phagocytosis. STUDY DESIGN, SIZE, DURATION Human GCs were tested for the ability to ingest and destroy the apoptotic oocytes and other apoptotic substrates. A systemic study of the main phagocytosis steps has been performed at different time points after loading of apoptotic substrates into the GC. PARTICIPANTS/MATERIALS, SETTING, METHODS Primary cultures of GC retrieved following controlled ovarian stimulation of five women for IVF/ICSI and a human granulosa KGN cell line were incubated with different apoptotic substrates: oocytes which underwent spontaneous apoptosis during the cultivation of immature germ cells for IVF/ICSI; apoptotic KGN cells; and apoptotic membranes from rat retinas. Cultured GC were analyzed for the presence of specific molecular markers characteristic of different steps of phagocytic and autophagy machineries by immunocytochemistry, confocal microscopy, transmission electron microscopy and western blotting, before and after loading with apoptotic substrates. MAIN RESULTS AND THE ROLE OF CHANCE Incubation of human GC with apoptotic substrates resulted in their translocation in cell cytoplasm, concomitant with activation of the phagocytosis receptor c-mer proto-oncogene tyrosine kinase MERTK (P < 0.001), clumping of motor molecule myosin II, recruitment of autophagy proteins: autophagy-related protein 5 (ATG5), autophagy-related protein 6 (Beclin1) and the rise of a membrane form of microtubule-associated protein 1 light chain 3 (LC3-II) protein. Ingestion of apoptotic substrates was accompanied by increased expression of the lysosomal protease Cathepsin D (P < 0.001), and a rise of lysosomes in the GCs, as assessed by different techniques. The level of autophagy adaptor, sequestosome 1/p62 (p62) protein remained unchanged. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION The number of patients described here is limited. Also the dependence of phagocytosis on reproductive hormone status of patients should be analyzed. WIDER IMPLICATIONS OF THE FINDINGS Removal of apoptotic oocytes by surrounding GC seems likely to be a physiological mechanism involved in follicular atresia. Proper functioning of this mechanism may be a new strategy for the treatment of ovarian dysfunctions associated with an imbalance in content of germ cells in the ovaries, such as premature ovarian failure and polycystic ovary syndrome. STUDY FUNDING/COMPETING INTEREST(S) The study was funded by Rennes Metropole (AIS 2015) and Agence de BioMédecine. This work was supported by funding from Université de Rennes1, Institut National de la Santé et de la Recherche Médicale (INSERM) and CHU de Rennes. A.B. is funded in part by the program Actions Concertées Interpasteuriennes (ACIP) and a research grant from the European Society of Pediatric Endocrinology. This work is supported by the Agence Nationale de la Recherche Grants ANR-17-CE14-0038 and ANR-10-LABX-73. The authors declare no competing interests.
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Affiliation(s)
- M G Yefimova
- CHU RENNES, Département de Gynécologie Obstétrique et Reproduction Humaine - CECOS, F-35000 Rennes, France.,Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St-Petersburg 194223, Russia
| | - C Lefevre
- Université Rennes, INSERM, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)-UMR_S 1085, F-35000 Rennes, France
| | - A Bashamboo
- Human Developmental Genetics, Institut Pasteur, 75724, Paris, France
| | - C Eozenou
- Human Developmental Genetics, Institut Pasteur, 75724, Paris, France
| | - A Burel
- MRic TEM Plateform, BIOSIT, Université Rennes 1, 35000 Rennes, France
| | - M T Lavault
- MRic TEM Plateform, BIOSIT, Université Rennes 1, 35000 Rennes, France
| | - A C Meunier
- Laboratoire STIM, Université de Poitiers, 86022 Poitiers Cedex, France
| | - C Pimentel
- CHU RENNES, Département de Gynécologie Obstétrique et Reproduction Humaine - CECOS, F-35000 Rennes, France
| | - S Veau
- CHU RENNES, Département de Gynécologie Obstétrique et Reproduction Humaine - CECOS, F-35000 Rennes, France
| | - A S Neyroud
- CHU RENNES, Département de Gynécologie Obstétrique et Reproduction Humaine - CECOS, F-35000 Rennes, France
| | - S Jaillard
- CHU RENNES, Département de Gynécologie Obstétrique et Reproduction Humaine - CECOS, F-35000 Rennes, France
| | - B Jégou
- Université Rennes, INSERM, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)-UMR_S 1085, F-35000 Rennes, France
| | - N Bourmeyster
- Laboratoire STIM, Université de Poitiers, 86022 Poitiers Cedex, France.,CHU POITIERS, Pôle Biospharm, secteur Biochimie, 86022 Poitiers Cedex, France
| | - C Ravel
- CHU RENNES, Département de Gynécologie Obstétrique et Reproduction Humaine - CECOS, F-35000 Rennes, France.,Université Rennes, INSERM, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)-UMR_S 1085, F-35000 Rennes, France
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11
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Freton L, Khene Z, Hascoet J, Alimi Q, Verhoest G, Mathieu R, Manunta A, Duval E, Vassal L, Berteuil N, Ravel C, Guénégo A, Bensalah K, Peyronnet B. Auto-évaluation de professionnels de santé concernant la prise en charge des patient.e.s transgenres. Prog Urol 2020. [DOI: 10.1016/j.purol.2020.07.076] [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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12
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Ben-Sadoun S, Rincent R, Auzanneau J, Oury FX, Rolland B, Heumez E, Ravel C, Charmet G, Bouchet S. Economical optimization of a breeding scheme by selective phenotyping of the calibration set in a multi-trait context: application to bread making quality. Theor Appl Genet 2020; 133:2197-2212. [PMID: 32303775 DOI: 10.1007/s00122-020-03590-4] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/31/2020] [Indexed: 05/27/2023]
Abstract
Trait-assisted genomic prediction approach is a way to improve genetic gain by cost unit, by reducing budget allocated to phenotyping or by increasing the program's size for the same budget. This study compares different strategies of genomic prediction to optimize resource allocation in breeding schemes by using information from cheaper correlated traits to predict a more expensive trait of interest. We used bread wheat baking score (BMS) calculated for French registration as a case study. To conduct this project, 398 lines from a public breeding program were genotyped and phenotyped for BMS and correlated traits in 11 locations in France between 2000 and 2016. Single-trait (ST), multi-trait (MT) and trait-assisted (TA) strategies were compared in terms of predictive ability and cost. In MT and TA strategies, information from dough strength (W), a cheaper trait correlated with BMS (r = 0.45), was evaluated in the training population or in both the training and the validation sets, respectively. TA models allowed to reduce the budget allocated to phenotyping by up to 65% while maintaining the predictive ability of BMS. TA models also improved the predictive ability of BMS compared to ST models for a fixed budget (maximum gain: + 0.14 in cross-validation and + 0.21 in forward prediction). We also demonstrated that the budget can be further reduced by approximately one fourth while maintaining the same predictive ability by reducing the number of phenotypic records to estimate BMS adjusted means. In addition, we showed that the choice of the lines to be phenotyped can be optimized to minimize cost or maximize predictive ability. To do so, we extended the mean of the generalized coefficient of determination (CDmean) criterion to the multi-trait context (CDmulti).
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Affiliation(s)
- S Ben-Sadoun
- INRAE-Université Clermont-Auvergne, UMR1095, GDEC, 5 chemin de Beaulieu, 63000, Clermont-Ferrand, France
| | - R Rincent
- INRAE-Université Clermont-Auvergne, UMR1095, GDEC, 5 chemin de Beaulieu, 63000, Clermont-Ferrand, France
| | - J Auzanneau
- Agri-Obtentions, Ferme de Gauvilliers, 78660, Orsonville, France
| | - F X Oury
- INRAE-Université Clermont-Auvergne, UMR1095, GDEC, 5 chemin de Beaulieu, 63000, Clermont-Ferrand, France
| | - B Rolland
- INRAE-Agrocampus Ouest-Université Rennes 1, UMR 1349, IGEPP, BP 35327, 35653, Le Rheu Cedex, France
| | - E Heumez
- INRAE-UE Lille, 2 chaussée Brunehaut, Estrées-Mons, BP 50136, 80203, Peronne Cedex, France
| | - C Ravel
- INRAE-Université Clermont-Auvergne, UMR1095, GDEC, 5 chemin de Beaulieu, 63000, Clermont-Ferrand, France
| | - G Charmet
- INRAE-Université Clermont-Auvergne, UMR1095, GDEC, 5 chemin de Beaulieu, 63000, Clermont-Ferrand, France
| | - S Bouchet
- INRAE-Université Clermont-Auvergne, UMR1095, GDEC, 5 chemin de Beaulieu, 63000, Clermont-Ferrand, France.
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13
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Abstract
Development of genetic testing direct-to-consumer (DTC) for recreational purposes, although prohibited in France, is a real challenge to the current practice of gamete donation. Indeed, anonymity is a fundamental principle contributing to the ethics of donation. This principle is weakened due to the availability to the general public of these tests on the Internet. Several thousands of people are conceived by gamete donation worldwide, some of whom do not know how they were conceived. Gamete donors should be informed that their anonymity is no longer guaranteed, as they can be found by homologies of their DNA, or that of a parent or a child, potentially available in databases. Thus, adults conceived by gamete donation but not informed by their parents can discover their way of conception. Recipients of gamete donation should also be informed that their child's DNA will establish the biological discrepancy and they should be encouraged to disclose the conception to their child. Several countries now allow children conceived by donation to obtain donor's identity. In France, the Bioethics Law is currently being finalized and will now allow access to donor's identity for people conceived by gamete donation.
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Affiliation(s)
- A-S Neyroud
- CHU Rennes, service de biologie de la reproduction-CECOS, 35000 Rennes, France; Univ Rennes, Inserm, EHESP, Irset (institut de recherche en santé, environnement et travail) - UMR_S 1085, 35000 Rennes, France
| | - M Roche
- CHU Rennes, service de biologie de la reproduction-CECOS, 35000 Rennes, France
| | - M Domin
- CHU Rennes, service de gynécologie, 35000 Rennes, France
| | - S Jaillard
- Univ Rennes, Inserm, EHESP, Irset (institut de recherche en santé, environnement et travail) - UMR_S 1085, 35000 Rennes, France; CHU Rennes, laboratoire de cytogénétique, 35000 Rennes, France
| | - C Ravel
- CHU Rennes, service de biologie de la reproduction-CECOS, 35000 Rennes, France; Univ Rennes, Inserm, EHESP, Irset (institut de recherche en santé, environnement et travail) - UMR_S 1085, 35000 Rennes, France.
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14
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Yefimova M, Bere E, Neyroud AS, Jegou B, Bourmeyster N, Ravel C. Myelinosome-like vesicles in human seminal plasma: A cryo-electron microscopy study. Cryobiology 2019; 92:15-20. [PMID: 31550454 DOI: 10.1016/j.cryobiol.2019.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 09/19/2019] [Accepted: 09/20/2019] [Indexed: 11/26/2022]
Abstract
Seminal plasma is particularly rich in extracellular vesicles. Myelinosomes are membranous organelles described throughout the seminiferous epithelium of the testis but never reported in semen. Our aim was to determine the presence of myelinosomes in human seminal plasma. Transmission electron microscopy and cryo electron microscopy analysis of standard myelinosome preparation from TM4 Sertoli cells and human seminal plasma samples. We have specified by cryo-EM the morphological aspect of "standard" myelinosomes isolated from the culture media of TM4 Sertoli cells. Vesicles with the same morphological appearance were revealed in human seminal plasma samples. Human seminal plasma contains a population of large EV (average diameter 200 nm) whose morphological appearance resemble those of myelinosomes. Defining the specific biomarkers and functionalities of myelinosome in human seminal plasma are the concerns to be addressed in our further research.
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Affiliation(s)
- M Yefimova
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 44 pr. M Thorez, 194223, St-Petersburg, Russia; Laboratoire STIM, Equipe CMCS, ERL CNRS 7368, 1, rue Georges Bonnet, 86022, Poitiers Cedex, France; CHU de Rennes, Département de Gynécologie Obstétrique et Reproduction Humaine-CECOS, Hôpital Sud, 16 boulevard de Bulgarie, 35000, Rennes, France; Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) -UMR_S 1085, F-35000, Rennes, France.
| | - E Bere
- Laboratoire STIM, Equipe CMCS, ERL CNRS 7368, 1, rue Georges Bonnet, 86022, Poitiers Cedex, France
| | - A S Neyroud
- CHU de Rennes, Département de Gynécologie Obstétrique et Reproduction Humaine-CECOS, Hôpital Sud, 16 boulevard de Bulgarie, 35000, Rennes, France
| | - B Jegou
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) -UMR_S 1085, F-35000, Rennes, France
| | - N Bourmeyster
- Laboratoire STIM, Equipe CMCS, ERL CNRS 7368, 1, rue Georges Bonnet, 86022, Poitiers Cedex, France
| | - C Ravel
- CHU de Rennes, Département de Gynécologie Obstétrique et Reproduction Humaine-CECOS, Hôpital Sud, 16 boulevard de Bulgarie, 35000, Rennes, France; Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) -UMR_S 1085, F-35000, Rennes, France
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15
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Yefimova M, Bourmeyster N, Becq F, Burel A, Lavault MT, Jouve G, Veau S, Pimentel C, Jégou B, Ravel C. Update on the cellular and molecular aspects of cystic fibrosis transmembrane conductance regulator (CFTR) and male fertility. Morphologie 2018; 103:4-10. [PMID: 30528305 DOI: 10.1016/j.morpho.2018.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 08/21/2018] [Revised: 10/09/2018] [Accepted: 11/06/2018] [Indexed: 12/15/2022]
Abstract
CFTR protein regulates electrolyte and fluid transport in almost all tissues with exocrine function, including male reproductive tract. Mutation of CFTR gene causes cystic fibrosis (CF), which affects the function of several organs, and impairs male fertility. The role of CFTR protein in different compartments of male reproductive tract (testis, epididymis, sperm) as well as an impact of CFTR mutation(s) on male fertility phenotype is discussed in relation with the choice of optimal technique for Assisted Reproductive Techniques (ART) management.
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Affiliation(s)
- M Yefimova
- Sechenov institute of evolutionary physiology and biochemistry, Russian academy of sciences, 44M. Thorez pr, 194223 St-Petersburg, Russia; Laboratoire STIM, université de Poitiers, 1, rue Georges-Bonnet, 86022 Poitiers cedex, France; Département de gynécologie obstétrique et reproduction humaine - CECOS, CHU de Rennes, 16, boulevard de Bulgarie, 35000 Rennes, France.
| | - N Bourmeyster
- Laboratoire STIM, université de Poitiers, 1, rue Georges-Bonnet, 86022 Poitiers cedex, France.
| | - F Becq
- Laboratoire STIM, université de Poitiers, 1, rue Georges-Bonnet, 86022 Poitiers cedex, France.
| | - A Burel
- Plateforme de MRIC TEM cellulaire, BIOSIT, Université Rennes 1, 2, avenue du Pr Léon-Bernard, 35000 Rennes, France.
| | - M-T Lavault
- Plateforme de MRIC TEM cellulaire, BIOSIT, Université Rennes 1, 2, avenue du Pr Léon-Bernard, 35000 Rennes, France.
| | - G Jouve
- Département de gynécologie obstétrique et reproduction humaine - CECOS, CHU de Rennes, 16, boulevard de Bulgarie, 35000 Rennes, France.
| | - S Veau
- Département de gynécologie obstétrique et reproduction humaine - CECOS, CHU de Rennes, 16, boulevard de Bulgarie, 35000 Rennes, France.
| | - C Pimentel
- Département de gynécologie obstétrique et reproduction humaine - CECOS, CHU de Rennes, 16, boulevard de Bulgarie, 35000 Rennes, France.
| | - B Jégou
- Inserm, université Rennes, EHESP, Irset (Instiut de recherche en santé,environnement et travail)-UMR_S1085, 35000 Rennes, France; Université de Rennes 1, 2, avenue du Pr Léon-Bernard, 35000 Rennes, France.
| | - C Ravel
- Département de gynécologie obstétrique et reproduction humaine - CECOS, CHU de Rennes, 16, boulevard de Bulgarie, 35000 Rennes, France; Inserm, université Rennes, EHESP, Irset (Instiut de recherche en santé,environnement et travail)-UMR_S1085, 35000 Rennes, France; Université de Rennes 1, 2, avenue du Pr Léon-Bernard, 35000 Rennes, France.
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16
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Dehaye M, Labau D, Bay Bay H, Lachaud L, Ravel C, Dereure O, Du Than A. Augmentation de l’incidence des leishmanioses cutanées pures multifocales et difficultés de prise en charge. Ann Dermatol Venereol 2018. [DOI: 10.1016/j.annder.2018.09.456] [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: 11/28/2022]
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17
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Garel B, Ficko C, Cabon M, Pilo J, Andriamanantena D, Dupin M, Ravel C, Rapp C, Flateau C. TROP-08 - Leishmaniose cutanée d’importation : aspects cliniques et thérapeutiques à propos de 72 cas. Med Mal Infect 2016. [DOI: 10.1016/s0399-077x(16)30516-9] [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: 10/21/2022]
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18
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Bruno C, Dudkiewicz-Sibony C, Berthaut I, Weil E, Brunet L, Fortier C, Pfeffer J, Ravel C, Fauque P, Mathieu E, Antoine J, Kotti S, Mandelbaum J. Survey of 243 ART patients having made a final disposition decision about their surplus cryopreserved embryos: the crucial role of symbolic embryo representation. Hum Reprod 2016; 31:1508-14. [DOI: 10.1093/humrep/dew104] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 04/13/2016] [Indexed: 12/16/2022] Open
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Abstract
The premature loss of ovarian function may have physical and psychological consequences. A better understanding of its mechanism is therefore needed. Because they are affecting the oocyte quality, the decline of the ovarian reserve and high maternal age are implicated in many defects leading to chromosomal defects, modifications of gene expression or alterations of the mitochondrial pattern of the oocyte. However, cellular therapies such as ovarian follicle activation or isolation of ovarian stem cells are promising treatments of ovarian failure.
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Affiliation(s)
- C Ravel
- Laboratoire de biologie de la reproduction, CHU de Rennes, 2, rue Henri-Le-Guillou, 35033 Rennes, France; Faculté de médecine, université Rennes 1, 35043 Rennes, France; Inserm, IRSET U1085, 263, avenue du Général-Leclerc, 35042 Rennes cedex, France.
| | - N Kazdar
- Laboratoire de biologie de la reproduction, CHU de Rennes, 2, rue Henri-Le-Guillou, 35033 Rennes, France; Faculté de médecine, université Rennes 1, 35043 Rennes, France
| | - J Leveque
- Service de gynécologie, CHU de Rennes, 2, rue Henri-Le-Guillou, 35033 Rennes, France
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Montjean D, Zini A, Ravel C, Belloc S, Dalleac A, Copin H, Boyer P, McElreavey K, Benkhalifa M. Sperm global DNA methylation level: association with semen parameters and genome integrity. Andrology 2015; 3:235-40. [PMID: 25755112 DOI: 10.1111/andr.12001] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [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] [Received: 08/10/2014] [Revised: 11/21/2014] [Accepted: 11/26/2014] [Indexed: 12/26/2022]
Abstract
Sperm DNA methylation abnormalities have been detected in oligozoospermic men. However, the association between sperm DNA methylation defects, sperm parameters and sperm DNA, and chromatin integrity remains poorly understood. This study was designed to clarify this issue. We recruited a cohort of 92 men (62 normozoospermic and 30 oligoasthenozoospermic) presenting for infertility evaluation during a 1-year period. Sperm global DNA methylation was evaluated by an ELISA-like method, DNA fragmentation was evaluated by flow cytometry-based terminal transferase dUTP nick end-labeling (TUNEL) assay (reported as DNA fragmentation index or DFI), and sperm denaturation was evaluated by aniline blue staining (reported as sperm denaturation index or SDI, a marker of chromatin compaction). We found a significant positive association between sperm global DNA methylation level and conventional sperm parameters (sperm concentration and motility), supported by the results of methylation analysis on H19-DMR. We also identified significant inverse relationships between sperm global DNA methylation, and, both DFI and SDI. However, sperm global DNA methylation level was not related to sperm vitality or morphology. Our findings suggest that global sperm DNA methylation levels are related to conventional sperm parameters, as well as, sperm chromatin and DNA integrity.
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Affiliation(s)
- D Montjean
- Service de Medicine et Biologie de la Reproduction, Hopital Saint-Joseph, Marseille, France
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21
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De Bantel A, Fleury-Feith J, Poirot C, Berthaut I, Garcin C, Landais P, Ravel C. Simultaneous vitality and DNA-fragmentation measurement in spermatozoa of smokers and non-smokers. Cytometry B Clin Cytom 2014; 88:120-4. [PMID: 25220539 DOI: 10.1002/cyto.b.21185] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 07/11/2014] [Accepted: 08/25/2014] [Indexed: 11/12/2022]
Abstract
BACKGROUND Because cigarette smoke is a powerful ROS producer, we hypothesized that the spermatozoa of smokers would be more at risk of having increased DNA fragmentation than spermatozoa of non-smoking men. METHODS A cross-sectional study was performed on consenting smokers and non-smokers, consulting in an infertility clinic for routine sperm analysis. The application of a novel TUNEL assay coupled to a vitality marker, LIVE/DEAD®, allowed both DNA fragmentation and viability measurement within spermatozoa of participants to be analyzed by flow cytometry. RESULTS The coupled vitality-DNA fragmentation analysis revealed that non-smokers and smokers, respectively presented medians of 3.6% [0.6-36.8] and 3.3% [0.9-9.6] DNA fragmented spermatozoa among the living spermatozoa population (P > 0.05). CONCLUSION No deleterious effect of smoking on spermatozoa was found in our study. More studies concerning potential mutagenic capacities of cigarette smoke on spermatozoa are necessary. In addition, the coupled vitality-DNA fragmentation analysis may orient Assisted Reproductive Technology teams when confronted with patients having a high percentage of DNA-fragmented living spermatozoa.
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Affiliation(s)
- A De Bantel
- UPMC; AP-HP, Service de Biologie de la reproduction-CECOS; Hôpital Tenon, 4 rue de la Chine, Paris, France
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De Bantel A, Fleury-Feith J, Poirot C, Berthaut I, Garcin C, Landais P, Ravel C. Simultaneous Vitality and DNA-fragmentation measurement in spermatozoa of smokers and non-smokers. Cytometry B Clin Cytom 2014:n/a-n/a. [PMID: 25175858 DOI: 10.1002/cytob.21185] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 07/11/2014] [Accepted: 08/25/2014] [Indexed: 06/03/2023]
Abstract
Background: Because cigarette smoke is a powerful ROS producer, we hypothesized that the spermatozoa of smokers would be more at risk of having increased DNA fragmentation than spermatozoa of non-smoking men. Methods: A Cross-Sectional Study was performed on consenting smokers and non-smokers, consulting in an infertility clinic for routine sperm analysis. The application of a novel TUNEL assay coupled to a vitality marker, LIVE/DEAD®, allowed both DNA fragmentation and viability measurement within spermatozoa of participants to be analyzed by flow cytometry. Results: The coupled vitality-DNA fragmentation analysis revealed that non-smokers and smokers respectively presented medians of 3.6% [0.6-36.8] and 3.3% [0.9-9.6] DNA fragmented spermatozoa among the living spermatozoa population (p>0.05). Conclusion: No deleterious effect of smoking on spermatozoa was found in our study. More studies concerning potential mutagenic capacities of cigarette smoke on spermatozoa are necessary. In addition, the coupled vitality-DNA fragmentation analysis may orient Assisted Reproductive Technologies teams when confronted with patients having a high percentage of DNA-fragmented living spermatozoa. © 2014 Clinical Cytometry Society.
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Affiliation(s)
- A De Bantel
- UPMC, AP-HP, Service de Biologie de la reproduction-CECOS, Hôpital Tenon, 4 rue de la Chine, 75020, Paris
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Van der Auwera G, Maes I, De Doncker S, Ravel C, Cnops L, Van Esbroeck M, Van Gompel A, Clerinx J, Dujardin JC. Heat-shock protein 70 gene sequencing for Leishmania species typing in European tropical infectious disease clinics. ACTA ACUST UNITED AC 2013; 18:20543. [PMID: 23929181 DOI: 10.2807/1560-7917.es2013.18.30.20543] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [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
We describe Leishmania species determination on clinical samples on the basis of partial sequencing of the heat-shock protein 70 gene (hsp70), without the need for parasite isolation. The method is especially suited for use in non-endemic infectious disease clinics dealing with relatively few cases on an annual basis, for which no fast high throughput diagnostic tests are needed. We show that the results obtained from this gene are in nearly perfect agreement with those from multilocus enzyme electrophoresis, which is still considered by many clinicians and the World Health Organization (WHO) as the gold standard in Leishmania species typing. Currently, 203 sequences are available that cover the entire hsp70 gene region analysed here, originating from a total of 41 leishmaniasis endemic countries, and representing 15 species and sub-species causing human disease. We also provide a detailed laboratory protocol that includes a step-by-step procedure of the typing methodology, to facilitate implementation in diagnostic laboratories.
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Affiliation(s)
- G Van der Auwera
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
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Lachaud L, Dedet JP, Marty P, Faraut F, Buffet P, Gangneux JP, Ravel C, Bastien P. Surveillance of leishmaniases in France, 1999 to 2012. Euro Surveill 2013; 18:20534. [PMID: 23929121] [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: 06/02/2023] Open
Abstract
Leishmaniasis is endemic in the south of France, where autochthonous disease is caused by Leishmania infantum, and affects both humans and dogs. The prevalence of canine leishmaniasis is between 3 and 66% depending on the region and the methods used. Human leishmaniases are also imported into France, mainly from French Guiana and North Africa. The surveillance of autochthonous and imported human leishmaniases is based on passive notification to the National Reference Centre for Leishmaniases (NRCL) created in 1998. Between 1999 and 2012, 317 autochthonous and 1,154 imported cases were notified to the NRCL. The average number of autochthonous cases notified per year was 22.6, mainly cases of visceral leishmaniasis (84.5%). All cases were infected in the south of France. Leishmaniasis incidence is 0.22 per 100,000 inhabitants in the endemic area. Imported cases were more frequent (annual mean of 82.4 cases) and consisted predominantly in cutaneous leishmaniasis (CL) cases (91%), essentially L. major CL imported from Maghreb and Sub-Saharan Africa, and L. guyanensis CL from French Guiana. This national notification system allowed a better understanding of the incidence and distribution of the disease; it is also useful to assess the temporal-spatial evolution of the disease in France, which appears relatively stable.
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Affiliation(s)
- L Lachaud
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Montpellier 1, Laboratoire de Parasitologie-Mycologie, Centre National de Référence des Leishmanioses, Montpellier, France
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Lachaud L, Dedet JP, Marty P, Faraut F, Buffet P, Gangneux JP, Ravel C, Bastien P, Working Group for the Notification C. Surveillance of leishmaniases in France, 1999 to 2012. Euro Surveill 2013. [DOI: 10.2807/1560-7917.es2013.18.29.20534] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Abstract
Leishmaniasis is endemic in the south of France, where autochthonous disease is caused by Leishmania infantum, and affects both humans and dogs. The prevalence of canine leishmaniasis is between 3 and 66% depending on the region and the methods used. Human leishmaniases are also imported into France, mainly from French Guiana and North Africa. The surveillance of autochthonous and imported human leishmaniases is based on passive notification to the National Reference Centre for Leishmaniases (NRCL) created in 1998. Between 1999 and 2012, 317 autochthonous and 1,154 imported cases were notified to the NRCL. The average number of autochthonous cases notified per year was 22.6, mainly cases of visceral leishmaniasis (84.5%). All cases were infected in the south of France. Leishmaniasis incidence is 0.22 per 100,000 inhabitants in the endemic area. Imported cases were more frequent (annual mean of 82.4 cases) and consisted predominantly in cutaneous leishmaniasis (CL) cases (91%), essentially L. major CL imported from Maghreb and Sub-Saharan Africa, and L. guyanensis CL from French Guiana. This national notification system allowed a better understanding of the incidence and distribution of the disease; it is also useful to assess the temporal-spatial evolution of the disease in France, which appears relatively stable.
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Affiliation(s)
- L Lachaud
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Montpellier 1, Laboratoire de Parasitologie-Mycologie, Centre National de Référence des Leishmanioses, Montpellier, France
| | - J P Dedet
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Montpellier 1, Laboratoire de Parasitologie-Mycologie, Centre National de Référence des Leishmanioses, Montpellier, France
| | - P Marty
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Nice Sophia Antipolis, Laboratoire de Parasitologie-Mycologie, CHU de Nice, Nice, France
| | - F Faraut
- Centre Hospitalier Universitaire (Academic Hospital Centre) / Laboratoire de Parasitologie-Mycologie, CHU La Timone, Marseille, France
| | - P Buffet
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Paris 6, Laboratoire de Parasitologie-Mycologie, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - J P Gangneux
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Rennes 1, Laboratoire de Parasitologie-Mycologie, CHU de Rennes, Rennes, France
| | - C Ravel
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Montpellier 1, Laboratoire de Parasitologie-Mycologie, Centre National de Référence des Leishmanioses, Montpellier, France
| | - P Bastien
- Centre Hospitalier Universitaire (Academic Hospital Centre) / University Montpellier 1, Laboratoire de Parasitologie-Mycologie, Centre National de Référence des Leishmanioses, Montpellier, France
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Lynch C, Tee N, Rouse H, Gordon A, Sati L, Zeiss C, Soygur B, Bassorgun I, Goksu E, Demir R, McGrath J, Groendahl ML, Thuesen L, Andersen AN, Loft A, Smitz J, Adriaenssens T, Vikesa J, Borup R, Mersy E, Kisters N, Macville MVE, Engelen JJM, Consortium SENN, Menheere PPCA, Geraedts JP, Coumans ABC, Frints SGM, Aledani T, Assou S, Traver S, Ait-ahmed O, Dechaud H, Hamamah S, Mizutani E, Suzumori N, Sugiyama C, Hattori Y, Sato T, Ando H, Ozaki Y, Sugiura-Ogasawara M, Wissing M, Kristensen SG, Andersen CY, Mikkelsen AL, Hoest T, Borup R, Groendahl ML, Velthut-Meikas A, Simm J, Metsis M, Salumets A, Palini S, Galluzzi L, De Stefani S, Primiterra M, Wells D, Magnani M, Bulletti C, Vogt PH, Frank-Herrmann P, Bender U, Strowitzki T, Besikoglu B, Heidemann P, Wunsch L, Bettendorf M, Jelinkova L, Vilimova S, Kosarova M, Sebek P, Volemanova E, Kruzelova M, Civisova J, Svobodova L, Sobotka V, Mardesic T, van de Werken C, Santos MA, Eleveld C, Laven JSE, Baart EB, Pylyp LY, Spinenko LA, Zukin VD, Perez-Sanz J, Matorras R, Arluzea J, Bilbao J, Gonzalez-Santiago N, Yeh N, Koff A, Barlas A, Romin Y, Manova-Todorova K, Hoz CDL, Mauri AL, Nascimento AM, Vagnini LD, Petersen CG, Ricci J, Massaro FC, Cavagna M, Pontes A, Oliveira JBA, Baruffi RLR, Franco JG, Wu EX, Ma S, Parriego M, Sole M, Boada M, Coroleu B, Veiga A, Kakourou G, Poulou M, Vrettou C, Destouni A, Traeger-Synodinos J, Kanavakis E, Yatsenko AN, Georgiadis AP, McGuire MM, Zorrilla M, Bunce KD, Peters D, Rajkovic A, Olszewska M, Kurpisz M, Gilbertson AZA, Ottolini CS, Summers MC, Sage K, Handyside AH, Thornhill AR, Griffin DK, Chung MK, Kim JW, Lee JH, Jeong HJ, Kim MH, Ryu MJ, Park SJ, Kang HY, Lee HS, Zimmermann B, Banjevic M, Hill M, Lacroute P, Dodd M, Sigurjonsson S, Lau P, Prosen D, Chopra N, Ryan A, Hall M, McAdoo S, Demko Z, Levy B, Rabinowitz M, Vereczeky A, Kosa ZS, Savay S, Csenki M, Nanassy L, Dudas B, Domotor ZS, Debreceni D, Rossi A, Alegretti JR, Cuzzi J, Bonavita M, Tanada M, Matunaga P, Fettback P, Rosa MB, Maia V, Hassun P, Motta ELA, Piccolomini M, Gomes C, Barros B, Nicoliello M, Matunaga P, Criscuolo T, Bonavita M, Alegretti JR, Miyadahira E, Cuzzi J, Hassun P, Motta ELA, Montjean D, Benkhalifa M, Berthaut I, Griveau JF, Morcel K, Bashamboo A, McElreavey K, Ravel C, Rubio C, Rodrigo L, Mateu E, Mercader A, Peinado V, Buendia P, Milan M, Delgado A, Al-Asmar N, Escrich L, Campos-Galindo I, Garcia-Herrero S, Poo ME, Mir P, Simon C, Reyes-Engel A, Cortes-Rodriguez M, Lendinez A, Perez-Nevot B, Palomares AR, Galdon MR, Ruberti A, Minasi MG, Biricik A, Colasante A, Zavaglia D, Iammarrone E, Fiorentino F, Greco E, Demir N, Ozturk S, Sozen B, Morales R, Lledo B, Ortiz JA, Ten J, Llacer J, Bernabeu R, Nagayoshi M, Tanaka A, Tanaka I, Kusunoki H, Watanabe S, Temel SG, Beyazyurek C, Ekmekci GC, Aybar F, Cinar C, Kahraman S, Nordqvist S, Karehed K, Akerud H, Ottolini CS, Griffin DK, Thornhill AR, Handyside AH, Gultomruk M, Tulay P, Findikli N, Yagmur E, Karlikaya G, Ulug U, Bahceci M, Bargallo MF, Arevalo MR, Salat MM, Barbat IV, Lopez JT, Algam ME, Boluda AB, de Oya GC, Tolmacheva EN, Kashevarova AA, Skryabin NA, Lebedev IN, Semaco E, Belo A, Riboldi M, Cuzzi J, Barros B, Luz L, Criscuolo T, Nobrega N, Matunaga P, Mazetto R, Alegretti JA, Bibancos M, Hassun P, Motta ELA, Serafini P, Neupane J, Vandewoestyne M, Heindryckx B, Deroo T, Lu Y, Ghimire S, Lierman S, Qian C, Deforce D, De Sutter P, Rodrigo L, Rubio C, Mateu E, Peinado V, Milan M, Viloria T, Al-Asmar N, Mercader A, Buendia P, Delgado A, Escrich L, Martinez-Jabaloyas JM, Simon C, Gil-Salom M, Capalbo A, Treff N, Cimadomo D, Tao X, Ferry K, Ubaldi FM, Rienzi L, Scott RT, Katzorke N, Strowitzki T, Vogt HP, Hehr A, Gassner C, Paulmann B, Kowalzyk Z, Klatt M, Krauss S, Seifert D, Seifert B, Hehr U, Minasi MG, Ruberti A, Biricik A, Lobascio M, Zavaglia D, Varricchio MT, Fiorentino F, Greco E, Rubino P, Bono S, Cotarelo RP, Spizzichino L, Biricik A, Colicchia A, Giannini P, Fiorentino F, Suhorutshenko M, Rosenstein-Tamm K, Simm J, Salumets A, Metsis M. Reproductive (epi)genetics. Hum Reprod 2013. [DOI: 10.1093/humrep/det220] [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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Berthaut I, Montjean D, Dessolle L, Morcel K, Deluen F, Poirot C, Bashamboo A, McElreavey K, Ravel C. Effect of temozolomide on male gametes: an epigenetic risk to the offspring? J Assist Reprod Genet 2013; 30:827-33. [PMID: 23652788 DOI: 10.1007/s10815-013-9999-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 04/09/2013] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Temozolomide is an oral alkylating agent with proven efficacy in recurrent high-grade glioma. The antitumour activity of this molecule is attributed to the inhibition of replication through DNA methylation. However, this methylation may also perturb other DNA-dependent processes, such as spermatogenesis. The ability to father a child may be affected by having this treatment. Here we report a pregnancy and a baby born after 6 cures of temozolomide. METHODS The quality of gametes of the father has been studied through these cures and after the cessation of treatment. Sperm parameters, chromosomal content and epigenetic profiles of H19, MEST and MGMT have been analysed. RESULTS Sperm counts decrease significantly and hypomethylation of the H19 locus increase with time even staying in the normal range. CONCLUSION This is the first report of an epigenetic modification in sperm after temozolomide treatment suggesting a potential risk for the offspring. A sperm cryopreservation before the initiation of temozolomide treatment should be recommended.
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Affiliation(s)
- I Berthaut
- AP-HP; Hopital Tenon, CECOS, 4 rue de la Chine, 75020, Paris, France
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Morizot G, Kendjo E, Mouri O, Thellier M, Pérignon A, Foulet F, Cordoliani F, Bourrat E, Laffitte E, Alcaraz I, Bodak N, Ravel C, Vray M, Grogl M, Mazier D, Caumes E, Lachaud L, Buffet PA, El Samad Y, Salle V, Gounod N, Dallot A, Belot G, Pelletier-Cunat S, Belon M, Verdon R, Rogeaux O, Grossetête G, Lesens O, Clabaut A, Maus E, Jouy L, Gener G, Perrin P, Roch N, Herve A, Le Duc D, Cuchet E, Maubon D, Hillion B, Menot E, Guillemot F, Beneton-Benhard N, Celerier P, Dupuis De Fonclare AL, Carre D, Bourgeois A, Marty P, Pomares C, Meunier L, Abergel H, Timsit F, Amoric JC, Busquet P, Karam S, Moisson YF, Mouly F, Ortoli JC, Consigny PH, Jouan M, Caby F, Datry A, Hochedez P, Rozembaum F, Dumortier C, Ancelle T, Dupin N, Paugam A, Ranque B, Bougnoux ME, Canestri A, Galezowsky MF, Hadj Rabia S, Hamel D, Schneider P, Wolter-Desfosses M, Janier M, Baccard M, Bezier M, Broissin M, Colin De Verdiere N, Durupt F, Hope Rapp E, Juillard C, Levy A, Moraillon I, Petit A, Regner S, Barthelme D, Tamarin JM, Begon E, Strady C, Gangneux JP, Carpentier O, Mechai F, Kieffer C, Dellestable P, Rebauder S. Travelers With Cutaneous Leishmaniasis Cured Without Systemic Therapy. Clin Infect Dis 2013; 57:370-80. [DOI: 10.1093/cid/cit269] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- G. Morizot
- Unité d'Immunologie Moléculaire des Parasites, Institut Pasteur de Paris
| | | | - O. Mouri
- Service de Parasitologie-Mycologie
| | | | - A. Pérignon
- Service de Maladies Infectieuses et Tropicales, Hôpital Pitié-Salpêtrière, Paris
| | - F. Foulet
- Service de Parasitologie-Mycologie, Hôpital Henri Mondor, Créteil
| | | | - E. Bourrat
- Service de Dermatologie, Hôpital Saint-Louis, Paris
- Service de Pédiatrie générale, Hôpital Robert Debré, Paris, France
| | - E. Laffitte
- Clinique de Dermatologie, Hôpitaux Universitaires de Genève, Switzerland
| | - I. Alcaraz
- Service de Maladies Infectieuses et Pathologie du voyageur, Hôpital Gustave Dron, Tourcoing
| | - N. Bodak
- Service de Dermatologie, Hôpital Necker, Paris
| | - C. Ravel
- French Reference Centre on Leishmaniasis, Montpellier
| | - M. Vray
- Unité de Recherche et d'Expertise Épidémiologie des Maladies Émergentes, Institut Pasteur de Paris/INSERM, France
| | - M. Grogl
- Walter Reed Army Institute of Research, Silver Spring, Maryland
| | | | - E. Caumes
- Service de Maladies Infectieuses et Tropicales, Hôpital Pitié-Salpêtrière, Paris
| | - L. Lachaud
- French Reference Centre on Leishmaniasis, Montpellier
| | - P. A. Buffet
- Unité d'Immunologie Moléculaire des Parasites, Institut Pasteur de Paris
- Service de Parasitologie-Mycologie
- UMRs 945 INSERM–Paris 6 University, France
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Bordes J, Ravel C, Jaubertie JP, Duperrier B, Gardet O, Heumez E, Pissavy AL, Charmet G, Le Gouis J, Balfourier F. Genomic regions associated with the nitrogen limitation response revealed in a global wheat core collection. Theor Appl Genet 2013; 126:805-822. [PMID: 23192671 DOI: 10.1007/s00122-012-2019-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Accepted: 11/05/2012] [Indexed: 05/27/2023]
Abstract
Modern wheat (Triticum aestivum L.) varieties in Western Europe have mainly been bred, and selected in conditions where high levels of nitrogen-rich fertilizer are applied. However, high input crop management has greatly increased the risk of nitrates leaching into groundwater with negative impacts on the environment. To investigate wheat nitrogen tolerance characteristics that could be adapted to low input crop management, we supplied 196 accessions of a wheat core collection of old and modern cultivars with high or moderate amounts of nitrogen fertilizer in an experimental network consisting of three sites and 2 years. The main breeding traits were assessed including grain yield and grain protein content. The response to nitrogen level was estimated for grain yield and grain number per m(2) using both the difference and the ratio between performance at the two input levels and the slope of joint regression. A large variability was observed for all the traits studied and the response to nitrogen level. Whole genome association mapping was carried out using 899 molecular markers taking into account the five ancestral group structure of the collection. We identified 54 main regions involving almost all chromosomes that influence yield and its components, plant height, heading date and grain protein concentration. Twenty-three regions, including several genes, spread over 16 chromosomes were involved in the response to nitrogen level. These chromosomal regions may be good candidates to be used in breeding programs to improve the performance of wheat varieties at moderate nitrogen input levels.
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Affiliation(s)
- Jacques Bordes
- INRA, UMR 1095 Génétique, Diversité Et Ecophysiologie Des Céréales, 234 Avenue Du Brézet, 63100, Clermont-Ferrand, France.
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Zapata S, Mejía L, Le Pont F, León R, Pesson B, Ravel C, Bichaud L, Charrel R, Cruaud C, Trueba G, Depaquit J. A study of a population of Nyssomyia trapidoi (Diptera: Psychodidae) caught on the Pacific coast of Ecuador. Parasit Vectors 2012; 5:144. [PMID: 22824472 PMCID: PMC3425330 DOI: 10.1186/1756-3305-5-144] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [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: 04/12/2012] [Accepted: 07/23/2012] [Indexed: 12/05/2022] Open
Abstract
Background Cutaneous leishmaniasis is endemic to the Pacific coast of Ecuador, and Nyssomyia trapidoi is considered to be its main vector. Dujardin et al. [1] recorded some differences in body pigmentation and isoenzymatic profiles in sympatric populations of Ny. trapidoi from the Pacific coast of Ecuador and suggested the existence of two cryptic species. Methods Entomological collections were performed in November 2008 and March 2011 in the locality of Paraíso Escondido using CDC miniature light traps and human bait. Morphological, isoenzymatical and molecular (sequencing of cytochome b and cytochrome c oxidase 1 of the mitochondrial DNA) analyses, such as detection of Leishmania DNA and phlebovirus RNA in some females, were performed. Results Neighbor-joining trees from mitochondrial sequences grouped all of Ecuadorian Ny. trapidoi (including the two color variants) in one cluster, except for two specimens which clustered separately in both genes. Isoenzymatic characterization confirmed that the color variants belong to the same population. Additionally, 11.5% of females were found by PCR to contain Endotrypanum monterogeii kinetoplastid DNA. All pools of Ny. trapidoi were negative for phlebovirus RNA. Conclusion Analysis of mitochondrial gene sequences and isoenzymes was unable to support the existence of two sibling species within Ny. trapidoi, which is a probable vector of Endotrypanum monterogeii.
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Affiliation(s)
- S Zapata
- Université de Reims Champagne-Ardenne, ANSES, EA 4688 USC Transmission vectorielle et épidémiosurveillance de maladies parasitaires, VECPAR, France
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Le Gouis J, Bordes J, Ravel C, Heumez E, Faure S, Praud S, Galic N, Remoué C, Balfourier F, Allard V, Rousset M. Genome-wide association analysis to identify chromosomal regions determining components of earliness in wheat. Theor Appl Genet 2012; 124:597-611. [PMID: 22065067 DOI: 10.1007/s00122-011-1732-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Accepted: 10/14/2011] [Indexed: 05/18/2023]
Abstract
The modification of flowering date is considered an important way to escape the current or future climatic constraints that affect wheat crops. A better understanding of its genetic bases would enable a more efficient and rapid modification through breeding. The objective of this study was to identify chromosomal regions associated with earliness in wheat. A 227-wheat core collection chosen to be highly contrasted for earliness was characterized for heading date. Experiments were conducted in controlled conditions and in the field for 3 years to break down earliness in the component traits: photoperiod sensitivity, vernalization requirement and narrow-sense earliness. Whole-genome association mapping was carried out using 760 molecular markers and taking into account the five ancestral group structure. We identified 62 markers individually associated to earliness components corresponding to 33 chromosomal regions. In addition, we identified 15 other significant markers and seven more regions by testing marker pair interactions. Co-localizations were observed with the Ppd-1, Vrn-1 and Rht-1 candidate genes. Using an independent set of lines to validate the model built for heading date, we were able to explain 34% of the variation using the structure and the significant markers. Results were compared with already published data using bi-parental populations giving an insight into the genetic architecture of flowering time in wheat.
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Affiliation(s)
- J Le Gouis
- INRA, UMR 1095 Génétique, Diversité et Ecophysiologie des Céréales, 234 Avenue du Brézet, 63 100, Clermont-Ferrand, France.
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Sertyel S, Kolankaya A, Yigit A, Cengiz F, Kunacaf G, Akman MA, Gurgan T, Yu B, DeCherney A, Segars J, Russanova V, Howard B, Serafini P, Kimati C, Hassun P, Cuzzi J, Peres M, Riboldi M, Gomes C, Fettback P, Alegretti J, motta E, Lappa C, Ottolini CS, Summers MC, Sage K, Rogers S, Griffin DK, Handyside AH, Thornhill AR, Ubaldi F, Capalbo A, Wright G, Elliott T, Maggiulli R, Rienzi L, Nagy ZP, Cinar Yapan C, Beyazyurek C, Ekmekci CG, Altin G, Yesil M, Yelke H, Kahraman S, Khalil M, Rittenberg V, Khalaf Y, El-toukhy T, Alvaro Mercadal B, Imbert R, Demeestere I, De Leener A, Englert Y, Costagliola S, Delbaere A, Zimmermann B, Ryan A, Baner J, Gemelos G, Dodd M, Rabinowitz M, Hill M, Sandalinas M, Garcia-Guixe E, Jimenez-Macedo A, Gimenez C, Hill M, Wemmer N, Potter D, Keller J, Gemelos G, Rabinowitz M, Cater E, Lynch C, Jenner L, Berrisford K, Campbell A, Keown N, Rouse H, Craig A, Fishel S, Palomares AR, Lendinez Ramirez AM, Martinez F, Ruiz Galdon M, Reyes Engel A, Mamas T, Xanthopoulou L, Heath C, Doshi A, Serhal P, SenGupta SB, Plaza S, Templin C, Saguet F, Claustres M, Girardet A, Rienzi L, Biricik A, Capalbo A, Colamaria S, Bono S, Spizzichino L, Ubaldi F, Fiorentino F, Hassun P, Alegretti JR, Kimati C, Barros B, Riboldi M, Cuzzi J, Motta ELA, Serafini P, Tulay P, Naja RP, Cascales-Roman O, Cawood S, Doshi A, Serhal P, SenGupta SB, Montjean D, Ravel C, Belloc S, Cohen-Bacrie P, Bashamboo A, McElreavey K, Benkhalifa M, Filippini G, Radovanovic J, Spalvieri S, Marabella D, Timperi P, Suter T, Jemec M, Traversa M, Marshall J, Leigh D, McArthur S, Zhang L, Yilmaz A, Zhang XY, Son WY, Holzer H, Ao A, Horcajadas JA, Munne S, Fisher J, Ketterson K, Wells D, Bisignano A, Rubio C, Mateu E, Milan M, Mercader A, Bosch E, Labarta E, Crespo J, Remohi J, Simon C, Pellicer A, Mercader A, Garrido N, Rubio C, Buendia P, Delgado A, Escrich L, Poo ME, Simon C, Held K, Baukloh V, Arps S, Wittmann ST, Petrussa L, Van de Velde H, De Rycke M, Beyazyurek C, Ekmekci CG, Ajredin N, Cinar Yapan C, Tac HA, Yelke HK, Altin G, Kahraman S, Basile N, Bronet F, Nogales MC, Ariza M, Martinez E, Linan A, Gaytan A, Meseguer M, Christopikou D, Tsorva E, Economou K, Davies S, Mastrominas M, Handyside AH, Avo Santos M, M. Lens S, C. Fauser B, S. E. Laven J, B. Baart E, Nakano T, Akamatsu Y, Sato M, Hashimoto S, Maezawa T, Himeno T, Ohnishi Y, Inoue T, Ito K, Nakaoka Y, Morimoto Y, Al Sharif J, Alhalabi M, Abou Alchamat G, Madania A, Khatib A, Kinj M, Monem F, Mahayri Z, Ajlouni A, Othman A, Chung JT, Son WY, Zhang XY, Ao A, Tan SL, Holzer H, Burnik Papler T, Fon Tacer K, Devjak R, Juvan P, Virant-Klun I, Vrtacnik Bokal E, Zheng HY, Chen SL, Chen X, Tang Y, Li L, Ye DS, Yang XH, Eichenlaub-Ritter U, Trapphoff T, Hastreiter S, Haaf T, Asada H, Maekawa R, Tamura I, Tamura H, Sugino N, Zakharova E, Zaletova V, Krivokharchenko I, Ata B, Kaplan B, Danzer H, Glassner M, Opsahl M, Tan SL, Munne S. REPRODUCTIVE (EPI) GENETICS. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.87] [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: 11/13/2022] Open
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Abstract
The Sertoli cell is essential for the formation and functioning of the testis. This is the first cell to differentiate into the initially bipotential genital ridge and is the only somatic cell present in seminiferous tubules. Maturation involves the loss of proliferative capacity, formation of intercellular tight junctions and the appearance of some specific markers. We can consider schematically two distinct roles associated with different features: a process of sexual differentiation with testicular formation and a role in spermatogenesis allowing the germ cells progression into sperm through close contact in the seminiferous tubules. These events, separated in time, are in fact intimately linked.
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Affiliation(s)
- C Ravel
- UPMC, hôpital Tenon, AP-HP, 4, rue de la Chine, 75020 Paris, France.
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Bordes J, Ravel C, Le Gouis J, Lapierre A, Charmet G, Balfourier F. Use of a global wheat core collection for association analysis of flour and dough quality traits. J Cereal Sci 2011. [DOI: 10.1016/j.jcs.2011.03.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [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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Boubidi S, Benallal K, Boudrissa A, Bouiba L, Bouchareb B, Garni R, Bouratbine A, Ravel C, Dvorak V, Votypka J, Volf P, Harrat Z. Phlebotomus sergenti (Parrot, 1917) identified as Leishmania killicki host in Ghardaïa, south Algeria. Microbes Infect 2011; 13:691-6. [DOI: 10.1016/j.micinf.2011.02.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2010] [Revised: 02/17/2011] [Accepted: 02/21/2011] [Indexed: 11/26/2022]
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Dessolle L, Freour T, Ravel C, Jean M, Colombel A, Darai E, Barriere P. Predictive factors of healthy term birth after single blastocyst transfer. Hum Reprod 2011; 26:1220-6. [DOI: 10.1093/humrep/der039] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [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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38
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Frapsauce C, Ravel C, Legendre M, Sibony M, Mandelbaum J, Donadille B, Achermann JC, Siffroi JP, Christin-Maitre S. Birth after TESE-ICSI in a man with hypogonadotropic hypogonadism and congenital adrenal hypoplasia linked to a DAX-1 (NR0B1) mutation. Hum Reprod 2011; 26:724-8. [PMID: 21227944 PMCID: PMC3037794 DOI: 10.1093/humrep/deq372] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [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] [Indexed: 11/14/2022] Open
Abstract
DAX1/NR0B1 mutations are responsible for X-linked congenital adrenal hypoplasia (AHC) associated with hypogonadotropic hypogonadism (HH). Few data are available concerning testicular function and fertility in men with DAX1 mutations. Azoospermia as well as failure of gonadotrophin treatment have been reported. We induced spermatogenesis in a patient who has a DAX1 mutation (c.1210C>T), leading to a stop codon in position 404 (p.Gln404X). His endocrine testing revealed a low testosterone level at 1.2 nmol/l (N: 12–40) with low FSH and LH levels at 2.1 IU/l (N: 1–5 IU/l) and 0.1 IU/l (N: 1–4 IU/l), respectively. Baseline semen analysis revealed azoospermia. Menotropin (Menopur®:150 IU, three times weekly) and human chorionic gonadotrophin (1500 IU, twice weekly) were used. After 20 months of treatment, as azoospermia persisted, bilateral multiple site testicular biopsies were performed. Histology revealed severe hypospermatogenesis. Rare spermatozoa were extracted from the right posterior fragment and ICSI was performed. Four embryos were obtained and, after a frozen–thawed single-embryo transfer, the patient's wife became pregnant and gave birth to a healthy boy. We report the first case of paternity after TESE–ICSI in a patient with DAX1 mutation, giving potential hope to these patients to father non-affected children. Furthermore, this case illustrates the fact that patients with X-linked AHC have a primary testicular defect in addition to HH.
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Affiliation(s)
- C Frapsauce
- UPMC, AP-HP, Hôpital Tenon, Service de Biologie de la Reproduction, 75020 Paris, France
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Acar-Perk B, Weimer J, Koch K, Salmassi A, Arnold N, Mettler L, Schmutzler AG, Ottolini CS, Griffin DK, Handyside AH, Summers MC, Thornhill AR, Montjean D, Benkhalifa M, Cohen-Bacrie P, Siffroi JP, Mandelbaum J, Berthaut I, Bashamboo A, Ravel C, McElreavey K, Ao A, Zhang XY, Yilmaz A, Chung JT, Demirtas E, Son WY, Dahan M, Buckett W, Holzer H, Tan SL, Perheentupa A, Vierula M, Jorgensen N, Skakkebaek NE, Chantot-Bastaraud S, McElreavey K, Toppari J, Muzii L, Magli MC, Gioia L, Mattioli M, Ferraretti AP, Gianaroli L, Koscinski I, Elinati E, Fossard C, Kuentz P, Kilani Z, Demirol A, Gurgan T, Schmitt F, Velez de la Calle J, Iqbal N, Louanjli N, Pasquier M, Carre-Pigeon F, Muller J, Barratt C, Viville S, Magli C, Grugnetti C, Castelletti E, Paviglianiti B, Gianaroli L, Pepas L, Braude P, Grace J, Bolton V, Khalaf Y, El-Toukhy T, Galeraud-Denis I, Bouraima H, Sibert L, Rives N, Carreau S, Janse F, de With LM, Fauser BCJM, Lambalk CB, Laven JSE, Goverde AJ, Giltay JC, De Leo V, Governini L, Quagliariello A, Margollicci MA, Piomboni P, Luddi A, Miyamura H, Nishizawa H, Ota S, Suzuki M, Inagaki A, Egusa H, Nishiyama S, Kato T, Nakanishi I, Fujita T, Imayoshi Y, Markoff A, Yanagihara I, Udagawa Y, Kurahashi H, Alvaro Mercadal B, Imbert R, Demeestere I, De Leener A, Englert Y, Costagliola S, Delbaere A, Velilla E, Colomar A, Toro E, Chamosa S, Alvarez J, Lopez-Teijon M, Fernandez S, Hosoda Y, Hasegawa A, Morimoto N, Wakimoto Y, Ito Y, Komori S, Sati L, Zeiss C, Demir R, McGrath J, Ku SY, Kim YJ, Kim YY, Kim HJ, Park KE, Kim SH, Choi YM, Moon SY, Minor A, Chow V, Ma S, Martinez Mendez E, Gaytan M, Linan A, Pacheco A, San Celestino M, Nogales C, Ariza M, Cernuda D, Bronet F, Lendinez Ramirez AM, Palomares AR, Perez-Nevot B, Urraca V, Ruiz Martin A, Reche A, Ruiz Galdon M, Reyes-Engel A, Treff NR, Tao X, Taylor D, Levy B, Ferry KM, Scott Jr. RT, Vasan S, Acharya KK, Vasan B, Yalaburgi R, Ganesan KK, Darshan SC, Neelima CH, Deepa P, Akhilesh B, Sravanthi D, Sreelakshmi KS, Deepti H, van Doorninck JH, Eleveld C, van der Hoeven M, Birnie E, Steegers EAP, Galjaard RJ, Laven JSE, van den Berg IM, Fiorentino F, Spizzichino L, Bono S, Biricik A, Kokkali G, Rienzi L, Ubaldi FM, Iammarrone E, Gordon A, Pantos K, Oitmaa E, Tammiste A, Suvi S, Punab M, Remm M, Metspalu A, Salumets A, Rodrigo L, Mir P, Cervero A, Mateu E, Mercader A, Vidal C, Giles J, Remohi J, Pellicer A, Martin J, Rubio C, Mozdarani H, Moghbeli Nejad S, Behmanesh M, Alleyasin A, Ghedir H, Ibala-Romdhane S, Mamai O, Brahem S, Elghezal H, Ajina M, Gribaa M, Saad A, Mateu E, Rodrigo L, Martinez MC, Mercader A, Peinado V, Milan M, Al-Asmar N, Pellicer A, Remohi J, Rubio C, Mercader A, Buendia P, Delgado A, Escrich L, Amorocho B, Simon C, Remohi J, Pellicer A, Martin J, Rubio C, Petrussa L, Van de Velde H, De Munck N, De Rycke M, Altmae S, Martinez-Conejero JA, Esteban FJ, Ruiz-Alonso M, Stavreus-Evers A, Horcajadas JA, Salumets A, Bug B, Raabe-Meyer G, Bender U, Zimmer J, Schulze B, Vogt PH, Laisk T, Peters M, Salumets A, Grabar V, Feskov A, Zhilkova E, Sugawara N, Maeda M, Seki T, Manome T, Nagai R, Araki Y, Georgiou I, Lazaros L, Xita N, Chatzikyriakidou A, Kaponis A, Grigoriadis N, Hatzi E, Grigoriadis I, Sofikitis N, Zikopoulos K, Gunn M, Brezina PR, Benner A, Du L, Kearns WG, Shen X, Zhou C, Xu Y, Zhong Y, Zeng Y, Zhuang G, Benner A, Brezina PR, Gunn MC, Du L, Richter K, Kearns WG, Andreeva P, Dimitrov I, Konovalova M, Kyurkchiev S, Shterev A, Daser A, Day E, Turley H, Immesberger A, Haaf T, Hahn T, Dear PH, Schorsch M, Don J, Golan N, Eldar T, Yaverboim R. POSTER VIEWING SESSION - REPRODUCTIVE (EPI) GENETICS. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.89] [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: 11/13/2022] Open
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Krabchi K, Berthaut I, Chantot-Bastaraud S, Ravel C, Chabbert-Buffet N, de Larouzière V, Bouchard P, Mandelbaum J, Siffroi JP, Christin-Maitre S. Quality assessment of induced spermatogenesis in hypogonadotrophic hypogonadic men treated with gonadotrophins. Reprod Biomed Online 2010; 22:277-83. [PMID: 21269879 DOI: 10.1016/j.rbmo.2010.11.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 11/18/2010] [Accepted: 11/23/2010] [Indexed: 10/18/2022]
Abstract
Hypogonadotrophic hypogonadism (HH) is characterized by deficient gonadotrophin secretion, resulting from pituitary or hypothalamic defects. In order to induce spermatogenesis, HH patients are treated with commercially available gonadotrophins. As far as is known, quality and genetic integrity of induced sperm cells have never been investigated, although they represent an important issue, since the ultimate goal of this treatment is to have competent spermatozoa in order to achieve paternity. In order to evaluate the nuclear integrity of induced sperm cells, sperm samples from treated HH patients were compared with sperm samples from normospermic control donors. Sperm cells were analysed by fluorescence in-situ hybridization, using probes specific for chromosomes 13, 21, 18, X and Y, and by TdT (terminal deoxynucleotidyl transferase)-mediated dUDP nick-end labelling assay. Results showed that the rate of aneuploid and diploid sperm cells in patients was not statistically different from controls and that the rate of sperm cells with fragmented DNA was within the normal values. Spermatozoa obtained by gonadotrophin treatment in HH patients are likely to have a balanced chromosomal content and a normal DNA integrity but this conclusion needs to be confirmed by further studies dealing with a greater number of patients.
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Affiliation(s)
- K Krabchi
- Université de Sherbrooke, Faculté de médecine et des sciences de santé, CHUS, 3001, 12e Avenue Nord, Sherbrooke, Qc, Canada
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Dessolle L, Freour T, Barriere P, Darai E, Ravel C, Jean M, Coutant C. A cycle-based model to predict blastocyst transfer cancellation. Hum Reprod 2009; 25:598-604. [DOI: 10.1093/humrep/dep439] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Dessolle L, Freour T, Barriere P, Jean M, Ravel C, Darai E, Biau DJ. How soon can I be proficient in embryo transfer? Lessons from the cumulative summation test for learning curve (LC-CUSUM). Hum Reprod 2009; 25:380-6. [DOI: 10.1093/humrep/dep391] [Citation(s) in RCA: 36] [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: 11/14/2022] Open
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Frapsauce C, Pionneau C, Bouley J, de Larouzière V, Berthaut I, Ravel C, Antoine JM, Soubrier F, Mandelbaum J. Infertilité masculine chez les patients normospermiques : analyse protéomique des spermes normaux non fécondants en fécondation in vitro classique. ACTA ACUST UNITED AC 2009; 37:796-802. [DOI: 10.1016/j.gyobfe.2009.07.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Revised: 07/17/2009] [Accepted: 07/17/2009] [Indexed: 11/16/2022]
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Dessolle L, de Larouzière V, Ravel C, Berthaut I, Antoine JM, Mandelbaum J. Congélation lente et vitrification des ovocytes humains matures et immatures. ACTA ACUST UNITED AC 2009; 37:712-9. [DOI: 10.1016/j.gyobfe.2009.04.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2008] [Accepted: 04/02/2009] [Indexed: 10/20/2022]
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Ravel C, Siffroi JP. Anomalies de structure du chromosome Y et syndrome de Turner. ACTA ACUST UNITED AC 2009; 37:511-8. [DOI: 10.1016/j.gyobfe.2009.04.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2009] [Accepted: 04/17/2009] [Indexed: 10/20/2022]
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Rousseaux S, Gaucher J, Thevenon J, Caron C, Vitte AL, Curtet S, Derobertis C, Faure AK, Levy R, Aknin-Seifer I, Ravel C, Siffroi JP, Mc Elreavey K, Lejeune H, Jimenez C, Hennebicq S, Khochbin S. [Spermiogenesis: histone acetylation triggers male genome reprogramming]. ACTA ACUST UNITED AC 2009; 37:519-22. [PMID: 19447664 DOI: 10.1016/j.gyobfe.2009.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Accepted: 04/03/2009] [Indexed: 10/20/2022]
Abstract
During their post-meiotic maturation, male germ cells undergo an extensive reorganization of their genome, during which histones become globally hyperacetylated, are then removed and progressively replaced by transition proteins and finally by protamines. The latter are known to tightly associate with DNA in the mature sperm cell. Although this is a highly conserved and fundamental biological process, which is a necessary prerequisite for the transmission of the male genome to the next generation, its molecular basis remains mostly unknown. We have identified several key factors involved in this process, and their detailed functional study has enabled us to propose the first model describing molecular mechanisms involved in post-meiotic male genome reprogramming. One of them, Bromodomain Testis Specific (BRDT), has been the focus of particular attention since it possesses the unique ability to specifically induce a dramatic compaction of acetylated chromatin. Interestingly, a mutation was found homozygous in infertile men which, according to our structural and functional studies, disrupts the function of the protein. A combination of molecular structural and genetic approaches has led to a comprehensive understanding of new major actors involved in the male genome reprogramming and transmission.
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Affiliation(s)
- S Rousseaux
- Inserm U823, université Joseph-Fourier, institut Albert-Bonniot, domaine de la Merci, 38706 Grenoble, France.
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Abstract
Cytogenetic investigations are performed in couples asking for IVF or intracytoplasmic sperm injection (ICSI) treatment. These serve a diagnostic purpose because male or female infertility might have a chromosomal origin. Chromosomal aberrations found in these patients include numerical abnormalities, such as Klinefelter syndrome, XYY karyotype or Turner syndrome and its variants; sex reversions, such as XX males or XY females; and also structural abnormalities, such as Robertsonian or reciprocal translocations and inversions. Finding the chromosomal origin of infertility in a patient also has a prognostic value because it aids the management of pregnancies obtained after IVF or ICSI and may lead to a proposal of prenatal or preimplantation genetic diagnosis.
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Makinson A, Le Moing V, Fontaine C, Ravel C, Le Falher G, Reynes J. M-10 Pentamidine et miltéfosine pour les leishmanioses chroniques chez l’adulte VIH-1 sous traitement antirétroviral efficace. Med Mal Infect 2008. [DOI: 10.1016/s0399-077x(08)73183-4] [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: 11/28/2022]
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Moon CD, Guillaumin JJ, Ravel C, Li C, Craven KD, Schardl CL. New Neotyphodium endophyte species from the grass tribes Stipeae and Meliceae. Mycologia 2007; 99:895-905. [DOI: 10.3852/mycologia.99.6.895] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Zerpa O, Ulrich M, Blanco B, Polegre M, Avila A, Matos N, Mendoza I, Pratlong F, Ravel C, Convit J. Diffuse cutaneous leishmaniasis responds to miltefosine but then relapses. Br J Dermatol 2007; 156:1328-35. [PMID: 17441955 DOI: 10.1111/j.1365-2133.2007.07872.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Diffuse cutaneous leishmaniasis (DCL), although rare, is profoundly incapacitating. At present there is no successful treatment for this progressive protozoan infection, which is associated with the absence of specific cell-mediated immunity (CMI) to Leishmania. This disease shares features with visceral leishmaniasis (VL), including specific CMI inactivity during active disease and a heavy parasitic burden, but VL responds well to treatment. Miltefosine is the first orally administered drug which has shown efficacy in the treatment of VL; it has not been adequately evaluated in the treatment of DCL. OBJECTIVES To evaluate the efficacy of miltefosine in the treatment of DCL, using clinical, parasitological, histopathological and immunological criteria. METHODS Sixteen patients with DCL were treated with miltefosine, 2.0-2.5 mg kg(-1) daily, for variable periods of time (75-218 days). Patients were hospitalized for the first month and evaluated every 2 weeks until the termination of treatment with routine laboratory chemistry, percentage clinical improvement, presence of parasites in skin smears, growth of parasites in culture medium and in hamsters, histopathological characteristics of the granulomas, adverse side-effects, and reactivity to leishmanin skin test antigen. Further cycles of treatment were given in some of these patients, particularly after suspension of treatment was followed by relapse. RESULTS Patients showed dramatic clinical improvement and reduction in the parasite burden by day 15 after the initiation of treatment, which continued while treatment was maintained. By day 45, 15 patients showed 80-90% clinical improvement. Nevertheless, suspension of treatment was followed by the development of new lesions in all but one patient. Inoculation in hamsters was observed to be the most sensitive technique to detect persisting parasites. Adverse events were very mild. CONCLUSIONS Miltefosine produced a dramatic clinical and parasitological response in patients with DCL and improvement continued during drug administration, but with a single exception all patients presented new lesions after suspension of treatment. There was no histological or skin test evidence to suggest the development of CMI during treatment, which may be an indispensable criterion for the evaluation of potentially effective drugs against DCL.
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Affiliation(s)
- O Zerpa
- Institute of Biomedicine, Ministry of Health, Central University of Venezuela, Esq. San Nicolás, San José, Caracas, Venezuela.
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