Search Results - "Guérin, J. F."

Students' engagement with Socioscientific issues: Use of sources of knowledge and attitudes by Klaver, Lida T., Walma van der Molen, Juliette H., Sins, Patrick H. M., Guérin, Laurence J. F.

“…The current study is about students' engagement with socioscientific issues (SSI). We explored the use of sources of knowledge about SSI and attitudes toward…”
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Strengthening science education through attention to student resources: A conceptualization of socioscientific capital by Klaver, Lida T., Sins, Patrick H. M., Walma van der Molen, Juliette H., Guérin, Laurence J. F.

“…In this position paper, we introduce the concept of socioscientific capital (SSC) to denote students' resources that unequivocally play a part when students…”
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Methylation profile of the promoters of Nanog and Oct4 in ICSI human embryos by AL-KHTIB, M, BLACHERE, T, GUERIN, J. F, LEFEVRE, A

“…STUDY QUESTION What is the methylation status of the Nanog and Oct4 promoters in human gametes and ICSI embryos and is abnormal reprogramming of their…”
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The impact of histones linked to sperm chromatin on embryo development and ART outcome by Fournier, C., Labrune, E., Lornage, J., Soignon, G., Giscard d'Estaing, S., Guérin, J.‐F., Benchaib, M.

“…Summary The purpose of this study was to investigate the relationship between the proportion of sperm chromatin linked to remaining histone and assisted…”
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Effects of socioscientific issues-based teaching on attitudes: Students' resources as moderator by Klaver, Lida T., Guérin, Laurence J. F., Sins, Patrick H. M., Walma van der Molen, Juliette H.

“…Engagement with socioscientific issues (SSI) is seen as an important citizenship goal of SSI-based science education. In this experimental study, Dutch…”
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Influence of global sperm DNA methylation on IVF results by Benchaib, M., Braun, V., Ressnikof, D., Lornage, J., Durand, P., Niveleau, A., Guérin, J.F.

“…BACKGROUND: In cases of male infertility, routine analysis for sperm characteristics is a poor predictive factor for the segmentation rate and embryo…”
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Dynamic CpG methylation of the KCNQ1OT1 gene during maturation of human oocytes by Khoueiry, R, Khoureiry, R, Ibala-Rhomdane, S, Méry, L, Blachère, T, Guérin, J-F, Lornage, J, Lefèvre, A

“…Imprinted genes, many of which are involved in development, are marked during gametogenesis to allow their parent-of-origin specific expression, and DNA…”
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Specific hypermethylation of LINE-1 elements during abnormal overgrowth and differentiation of human placenta by PERRIN, D, BALLESTAR, E, FRAGA, M. F, FRAPPART, L, ESTELLER, M, GUERIN, J.-F, DANTE, R

“…In human post-natal somatic cells, low global levels of DNA methylation have been associated with the hypomethylation of several repetitive elements, a feature…”
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Prospective evaluation of the threat related to the use of seminal fractions from hepatitis C virus-infected men in assisted reproductive techniques by Bourlet, T., Lornage, J., Maertens, A., Garret, A.-S., Saoudin, H., Tardy, J.-C., Jimenez, C., Guerin, J.-F., Pozzetto, B., Levy, R.

“…BACKGROUND The risk of hepatitis C virus (HCV) transmission during assisted reproductive techniques (ARTs) is still disputed and no report concerning its…”
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Effects of cryopreservation on the meiotic spindle of human oocytes by Mandelbaum, J., Anastasiou, O., Lévy, R., Guérin, J.F., de Larouzière, V., Antoine, J.M.

“…The microtubular meiotic spindle of most mammals, including humans, is very sensitive to cooling [Hum. Reprod. 16 (2001) 2374; Fertil. Steril. 54 (1990) 102;…”
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Selection bias in semen studies due to self-selection of volunteers by Muller, A., De La Rochebrochard, E., Labbé-Declèves, C., Jouannet, P., Bujan, L., Mieusset, R., Le Lannou, D., Guerin, J.F., Benchaib, M., Slama, R., Spira, A.

“…BACKGROUND: Reports of a secular decrease in semen quality remain controversial, particularly due to the possibility of selection bias. We aimed to describe…”
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Transmission risk of hepatitis C virus in assisted reproductive techniques by Levy, R., Tardy, J.C., Bourlet, T., Cordonier, H., Mion, F., Lornage, J., Guerin, J.F.

“…Medical assistance for procreation in a couple where one or both parents has hepatitis C viral infection (HCV) raises the issue of the transmission of the…”
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Pregnancy after safe IVF with hepatitis C virus RNA-positive sperm by Levy, R., Bourlet, T., Maertens, A., Salle, B., Lornage, J., Laurent, J.L., Pozzetto, B., Guerin, J.F.

“…In France, assisted reproductive technology (ART) for hepatitis C virus (HCV)-infected patients is now subject to strict control after the publication of…”
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Improvement of human early embryo development in vitro by coculture on monolayers of Vero cells by MENEZO, Y. J. R, GUERIN, J.-F, CZYBA, J.-C

“…Human "spare" embryos, judged unsuitable for freezing because of their poor quality, were cocultured for 5 days on a "Vero" cell layer. These epithelial cells…”
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Annexin V labelling and terminal transferase-mediated DNA end labelling (TUNEL) assay in human arrested embryos by LEVY, R, BENCHAIB, M, CORDONIER, H, SOUCHIER, C, GUERIN, J. F

“…Confocal laser scanning microscopy was used to observe human arrested and fragmented preimplantation embryos obtained by in-vitro fertilization. Observation of…”
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Analysis by fluorescence in situ hybridization (FISH) of the relationship between gonosomic aneuploidy and the results of assisted reproduction in men with severe oligozoospermia by Mehdi, M., Smatti, B., Saad, A., Guerin, J. F., Benchaib, M.

“…Summary The aim of this study was to analyse the frequency of sex‐chromosomal aneuploidy in human spermatozoa of severe oligozoospermic men undergoing…”
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Regional methylation of the 5' end CpG island of BRCA1 is associated with reduced gene expression in human somatic cells by Magdinier, F, Billard, L M, Wittmann, G, Frappart, L, Benchaïb, M, Lenoir, G M, Guérin, J F, Dante, R

“…In mammalians, demethylation of specific promoter regions often correlates with gene activation; inversely, dense methylation of CpG islands leads to gene…”
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Interest of co-cultures for embryos obtained by in-vitro fertilization: a French collaborative study by Guerin, J F, Nicollet, B

“…Co-cultures of human embryos, particularly with Vero cells, are used by several French groups, mainly in cases of successive failures of implantation. In most…”
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Restoration of ovarian steroid secretion and histologic assessment after freezing, thawing, and autograft of a hemi-ovary in sheep by Salle, B, Lornage, J, Demirci, B, Vaudoyer, F, Poirel, M T, Franck, M, Rudigoz, R C, Guerin, J F

“…To evaluate the effects of freezing, thawing, and autograft of a hemi-ovary on steroid secretion, endometrial maturation, and ovarian histology in ewes…”
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Uterine rupture in first or second trimester of pregnancy after in-vitro fertilization and embryo transfer by Arbab, F., Boulieu, D., Bied, V., Payan, F., Lornage, J., Guérin, J.F.

“…Abstract We report five cases of early rupture of cornual pregnancy with history of previous salpingectomy and cornual resection following in-vitro…”
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