Presence of immunoreactive gonadotropin releasing hormone (GnRH) and its receptor (GnRHR) in rat ovary during pregnancy.

abstract：:We describe the cloning and characterization of a partial cDNA, x121, that represents an RNA, which is localized in the animal hemisphere of Xenopus oocytes. This RNA is also detected in an animal to vegetal gradient during early cleavage stages. The x121 RNA titer decreases from fertilization through the gastrula sta...

journal_title：Molecular reproduction and development

authors： Kloc M,Reddy BA,Miller M,Eastman E,Etkin LD

更新日期：1991-04-01 00:00:00

abstract：:Development of female gonads in the chicken is asymmetric. This asymmetry affects gene expression, morphology, and germ cell development; consequently only the left ovary develops into a functional organ, whereas the right ovary remains vestigial. In males, on the other hand, both gonads develop into functional testes...

journal_title：Molecular reproduction and development

authors： de Melo Bernardo A,Heeren AM,van Iperen L,Fernandes MG,He N,Anjie S,Noce T,Ramos ES,de Sousa Lopes SM

更新日期：2015-10-01 00:00:00

abstract：:We aimed in this study to explore if sphingosine-1-phosphate (S1P) reduces apoptosis of primordial follicles during cryopreservation of human ovarian cortical samples. Ovarian cortical tissue fragments obtained from young patients who underwent laparoscopic excision of benign ovarian cysts were used for the experiment...

journal_title：Molecular reproduction and development

authors： Guzel Y,Bildik G,Dilege E,Oktem O

更新日期：2018-11-01 00:00:00

abstract：:In the rat, in response to blastocyst implantation, stromal cells of the endometrium proliferate and differentiate into decidual cells, forming the decidua. After reaching its maximum development, the decidua undergoes regression. This phenomenon appears to be due to an active process involving apoptosis. As there is ...

journal_title：Molecular reproduction and development

authors： Almeida A,Correia-da-Silva G,Cepa M,Bell SC,Teixeira NA

更新日期：2007-03-01 00:00:00

abstract：:Activation of the mammalian egg results in cortical reaction (CR), which is correlated with an increase in intracellular Ca2+ concentration and PKC activation. The CR is a gradual rather then an "all or none" response, and can be regulated by different concentrations of parthenogenetic activators. To evaluate the biol...

journal_title：Molecular reproduction and development

authors： Raz T,Skutelsky E,Amihai D,Hammel I,Shalgi R

更新日期：1998-11-01 00:00:00

abstract：:In vitro studies have suggested that the Cables1 gene regulates epithelial cell proliferation, whereas other studies suggest a role in promoting neural differentiation. In efforts to clarify the functions of Cables1 in vivo, we conducted gain- and loss-of-function studies targeting its ortholog (cables1) in the zebraf...

journal_title：Molecular reproduction and development

authors： Groeneweg JW,White YA,Kokel D,Peterson RT,Zukerberg LR,Berin I,Rueda BR,Wood AW

更新日期：2011-01-01 00:00:00

abstract：:To study possible role and regulation of apoptosis occurred in primate endometrium, the expression of apoptosis-related molecules, Fas, FasL, B cell lymphoma/leukaemia-2 (Bcl-2), and Bax were analyzed in relation to occurrence of apoptosis and proliferation in the cycling endometrium of the rhesus monkey using immunoh...

journal_title：Molecular reproduction and development

authors： Wei P,Jin X,Tao SX,Han CS,Liu YX

更新日期：2005-04-01 00:00:00

abstract：:Derivation and stable maintenance of porcine induced pluripotent stem cells (piPSCs) is challenging. We herein systematically analyzed two piPSC lines, derived by lentiviral transduction and cultured under either leukemia inhibitory factor (LIF) or fibroblast growth factor (FGF) conditions, to shed more light on the u...

journal_title：Molecular reproduction and development

authors： Secher JO,Ceylan A,Mazzoni G,Mashayekhi K,Li T,Muenthaisong S,Nielsen TT,Li D,Li S,Petkov S,Cirera S,Luo Y,Thombs L,Kadarmideen HN,Dinnyes A,Bolund L,Roelen BA,Schmidt M,Callesen H,Hyttel P,Freude KK

更新日期：2017-03-01 00:00:00

abstract：:An early step in mammalian fertilization is species-restricted binding of sperm to the egg's zona pellucida (ZP), a thick extracellular coat that surrounds eggs. Sperm bind to the ZP of unfertilized eggs, but not to the ZP of fertilized eggs. Shortly after binding to the unfertilized egg ZP, sperm undergo the acrosome...

journal_title：Molecular reproduction and development

authors： Litscher ES,Williams Z,Wassarman PM

更新日期：2009-10-01 00:00:00

abstract：:Centrosome reduction during spermiogenesis has been studied using anti-gamma-tubulin and anti-centrin antibodies and electron microscopy in nonhuman primates. Rhesus spermatids possess apparently normal centrosomes comprising a pair of centrioles associated with gamma-tubulin and centrin. However, they do not nucleate...

journal_title：Molecular reproduction and development

authors： Manandhar G,Schatten G

更新日期：2000-08-01 00:00:00

abstract：:This study was conducted to investigate the effect of recipient activation time on the chromatin structure and development of bovine nuclear transfer embryos. Serum-starved skin cells were electrofused to enucleated oocytes, activated 1-5 hr after fusion, and cultured in vitro. Some fused eggs were fixed at each time ...

journal_title：Molecular reproduction and development

authors： Choi JY,Kim CI,Park CK,Yang BK,Cheong HT

更新日期：2004-11-01 00:00:00

abstract：:Germinal vesicle (GV) breakdown in mammalian oocytes is regulated by the activation of maturation promoting factor (MPF). We investigated a specific cdc2 kinase inhibitor, roscovitine, to maintain pig oocytes in the GV stage. Cumulus-oocyte complexes (COCs) were aspirated from slaughterhouse ovaries and cultured for 4...

journal_title：Molecular reproduction and development

authors： Ju JC,Tsay C,Ruan CW

更新日期：2003-04-01 00:00:00

abstract：:The development of outbred mouse (CF1) zygotes in vitro has been studied using medium SOM in which the concentrations of NaCl (85, 105, 125 mM), glutamine (0, 1, 2 mM), and betaine (0, 1, 2 mM) were varied. The effects of the compounds were studied using a 3(3) factorial experimental arrangement. The inhibitory effect...

journal_title：Molecular reproduction and development

authors： Biggers JD,Lawitts JA,Lechene CP

更新日期：1993-04-01 00:00:00

abstract：:The frameworks (key mechanisms) of the self/non-self-discrimination systems that are found in various organisms have not been actively selected for, but have evolved by genetic drift such that the genetic frequency of random, advantageous mutations has increased within the genomes of these species by natural selection...

journal_title：Molecular reproduction and development

authors： Harada Y,Sawada H

更新日期：2013-01-01 00:00:00

abstract：:Germ cells occupy a unique position in animal reproduction, development, and evolution. In sexually reproducing animals, only they can produce gametes and contribute genetically to subsequent generations. Nonetheless, germ line specification during embryogenesis is conceptually the same as the specification of any som...

journal_title：Molecular reproduction and development

authors： Ewen-Campen B,Schwager EE,Extavour CG

更新日期：2010-01-01 00:00:00

abstract：:Expression of ovine interferon-tau (oIFNtau), a factor essential for the process of maternal recognition of pregnancy in ruminant ungulates, is restricted to the trophoblast. However, the molecular mechanisms by which oIFNtau expression is restricted to the trophectoderm have not been fully elucidated. The objective o...

journal_title：Molecular reproduction and development

authors： Imakawa K,Kim MS,Matsuda-Minehata F,Ishida S,Iizuka M,Suzuki M,Chang KT,Echternkamp SE,Christenson RK

更新日期：2006-05-01 00:00:00

abstract：:The objective of this study was to examine the effects of different culture media used for maturation of bovine oocytes on in vitro embryo development following in vitro fertilization. Oocytes were aspirated from 2-5 mm follicles of ovaries collected at a local abattoir. The oocyte-cumulus complexes (OCCs) were cultur...

journal_title：Molecular reproduction and development

authors： Rose TA,Bavister BD

更新日期：1992-01-01 00:00:00

abstract：:We have cloned and sequenced the bovine NALP9 cDNA, which contains a 2991 bp long open reading frame with 76% homology to its human counterpart. The putative 996 amino acids protein presents the domain organization typical of the Nacht, Leucine rich repeat and Pyrin domain containing (NALP) family that includes the ma...

journal_title：Molecular reproduction and development

authors： Dalbiès-Tran R,Papillier P,Pennetier S,Uzbekova S,Monget P

更新日期：2005-08-01 00:00:00

abstract：:Glycogen synthase kinase-3 (GSK-3) is a highly conserved serine/threonine protein kinase implicated in diverse cellular processes. Activity of GSK-3 is essential for meiotic chromatin segregation in oocytes, yet expression and/or function of GSK-3 have not been reported in mammalian preimplantation embryos. Objectives...

journal_title：Molecular reproduction and development

authors： Acevedo N,Wang X,Dunn RL,Smith GD

更新日期：2007-02-01 00:00:00

abstract：:In this review, we discuss the expression, regulation, downstream mechanisms, and function of stress-induced stress enzymes in mammalian oocytes, peri-implantation embryos, and the stem cells derived from those embryos. Recent reports suggest that stress enzymes mediate developmental functions during early mammalian d...

journal_title：Molecular reproduction and development

authors： Xie Y,Liu J,Proteasa S,Proteasa G,Zhong W,Wang Y,Wang F,Puscheck EE,Rappolee DA

更新日期：2008-04-01 00:00:00

abstract：:Annexins are a family of Ca(2+)-binding proteins involved in the exocytotic process. The presence and the role of annexins in mammalian spermatozoa have not been well established. Two annexin-like proteins were obtained from guinea pig testis, a doublet of Mr 31-33 kD (p31/33) and a protein of Mr 50 kD (p50). Both pro...

journal_title：Molecular reproduction and development

authors： Othón Hernández E,Roa-Espitia AL,Cruz Trejo J,Mújica A

更新日期：1996-03-01 00:00:00

abstract：:Communication between the oocyte and its somatic cells has been shown to be important in oocyte development. Here we examined how the oocyte may be involved in bovine cumulus cell expansion. Intact bovine cumulus oocyte complexes (COC) were obtained by puncturing antral follicles. From the intact COC, oocytectomised c...

journal_title：Molecular reproduction and development

authors： Ralph JH,Telfer EE,Wilmut I

更新日期：1995-10-01 00:00:00

abstract：:XIST is an X-linked, non-coding gene responsible for the cis induction of X-chromosome inactivation (XCI). Knockout of the XIST allele on an active X chromosome abolishes erroneous XCI and enhances the in vivo development of cloned mouse embryos by more than 10-fold. This study aimed to investigate whether a similar m...

journal_title：Molecular reproduction and development

authors： Yang Y,Wu D,Liu D,Shi J,Zhou R,He X,Quan J,Cai G,Zheng E,Wu Z,Li Z

更新日期：2017-06-01 00:00:00

abstract：:Apoptosis is a well-established cellular mechanism for selective cell deletion during development. However, little is known about the expression of an apoptotic pathway and its role in determining the relative sensitivity of the early, pre-gastrula, avian embryo to stress-induced cell death. We examined the sensitivit...

journal_title：Molecular reproduction and development

authors： Muscarella DE,Rachlinski MK,Bloom SE

更新日期：1998-10-01 00:00:00

abstract：:In mammals, Sry, Sox9, and M33 act as regulators at a chromatin level and promote the maturation of embryonic gonads into testes. Recently, it was shown that transcriptional regulation by DNA methylation plays crucial roles in gene expression during the differentiation and development of various cell types. To determi...

journal_title：Molecular reproduction and development

authors： Mizukami T,Kanai Y,Fujisawa M,Kanai-Azuma M,Kurohmaru M,Hayashi Y

更新日期：2008-06-01 00:00:00

abstract：:This report is part of a continuing study in which we employ monoclonal antibodies to membrane domains and internal organelles of rat spermatozoa in order to trace events during maturation, capacitation, fertilization, and early development. In the present study, we have used immunocytochemistry at the light and EM le...

journal_title：Molecular reproduction and development

authors： Shalgi R,Magnus A,Jones R,Phillips DM

更新日期：1994-03-01 00:00:00

abstract：:Sperm must undergo capacitation to become fertilization competent. Here we validated that monosialotetrahexosylganglioside (GM1 ) localization patterns, which were assessed in the Cap-Score™ Sperm Function Test, reflect a capacitated state in human sperm. First, we defined patterns representing sperm that do or do not...

journal_title：Molecular reproduction and development

authors： Moody MA,Cardona C,Simpson AJ,Smith TT,Travis AJ,Ostermeier GC

更新日期：2017-05-01 00:00:00

abstract：:In the present study propidium iodide was used as a fluorescent dye to stain DNA of cells of hamster testicular origin and fluorescent intensities were analyzed by flow cytometry. We used hamster testicular cells from the first spermatogenic wave to observe the consecutive appearance of the different types of cells du...

journal_title：Molecular reproduction and development

authors： Golan R,Weissenberg R,Oschry Y,Shochat L,Lewin LM

更新日期：2000-02-01 00:00:00

abstract：:This study investigated the mechanisms for the regulation of intracellular pH in bovine oocytes and embryos. Na(+)/H(+) antiporter activity for the regulation of intracellular pH in the acid to neutral range was detected in both in vitro matured bovine oocytes and in vitro produced embryos. However, the activity of th...

journal_title：Molecular reproduction and development

authors： Lane M,Bavister BD

更新日期：1999-12-01 00:00:00

abstract：:Using a specific protein binding assay we have shown that a spermatozoon of the ascidian Ciona intestinalis contains 1.58 +/- 0.74 x 10(-19) moles of inositol 1,4,5-tri-phosphate (InsP3), while a human spermatozoon contains 6.4 +/- 0.14 x 10(-19) moles. Induction of the acrosome reaction (AR) in both species, by expos...

journal_title：Molecular reproduction and development

authors： Tosti E,Palumbo A,Dale B

更新日期：1993-05-01 00:00:00