Results 21 to 30 of about 84,845 (296)
Models of in vitro spermatogenesis
, 2022 S.32-43Understanding the mechanisms that lead to the differentiation of male germ cells from their spermatogonial stem cells through meiosis to give rise to mature haploid spermatozoa has been a major quest for many decades.
Anand-Ivell, R. +3 more
core +1 more source
An update on the potential for male contraception : emerging options [PDF]
, 2013 The human population continues to grow and is estimated to rise to 10.1 billion by the end of the century. Therefore, there is still an unmet need for safe and highly effective contraceptive options for both men and women.
Nimmo, Natalie +5 more
core +4 more sources
Estrogen and Spermatogenesis* [PDF]
Endocrine Reviews, 2001 AbstractAlthough it has been known for many years that estrogen administration has deleterious effects on male fertility, data from transgenic mice deficient in estrogen receptors or aromatase point to an essential physiological role for estrogen in male fertility.
L, O'Donnell +3 more
openaire +2 more sources
Effect of FSH on testicular morphology and spermatogenesis in gonadotrophin-deficient hypogonadal mice lacking androgen receptors [PDF]
, 2010 Follicle stimulating hormone (FSH) and androgen act to stimulate and maintain spermatogenesis. FSH acts directly on the Sertoli cells to stimulate germ cell number and acts indirectly to increase androgen production by the Leydig cells.
Abel, M.H. +4 more
core +1 more source
BMC Genomics, 2020 Background Spermatogenesis is an intricate process regulated by a finely organized network. The orange-spotted grouper (Epinephelus coioides) is a protogynous hermaphroditic fish, but the regulatory mechanism of its spermatogenesis is not well-understood.
Xi Wu +6 more
doaj +1 more source
Spermatogenesis without spermiogenesis in Laudakia caucasia (Reptilia: Agamidae): the role of hibernation [PDF]
Iranian Journal of Animal Biosystematics, 2007 During hibernation period from Mid October to Late March, we removed testis of Laudakia caucasia. Based on histological and statistical analyses we obtained two phases in spermatogenesis in this lizard as follows: (a) from October to December, in which ...
N. Rastegar-Pouyani, F. Torki
doaj +1 more source
Spermatogenesis and sertoli cell activity in mice lacking Sertoli cell receptors for follicle stimulating hormone and androgen [PDF]
, 2008 Spermatogenesis in the adult male depends on the action of FSH and androgen. Ablation of either hormone has deleterious effects on Sertoli cell function and the progression of germ cells through spermatogenesis.
Baker, P.J. +8 more
core +1 more source
Jurnal Kedokteran Diponegoro, 2017 Latar belakang: Metanol memiliki efek toksik melalui metabolitnya yaitu asam format yang mengakibatkan gangguan spermatogenesis. Ranitidine mempunyai enzim yang dapat menghambat terbentuknya metabolit asam format sehingga diharapkan akan mengurangi efek ...
James Otniel +2 more
doaj +1 more source
X chromosome inactivation during Drosophila spermatogenesis [PDF]
, 2007 Genes with male- and testis-enriched expression are under-represented on the Drosophila melanogaster X chromosome. There is also an excess of retrotransposed genes, many of which are expressed in testis, that have “escaped” the X chromosome and moved to ...
Baines, J. +11 more
core +2 more sources
Loss of TSLC1 causes male infertility due to a defect at the spermatid stage of spermatogenesis. [PDF]
, 2006 Tumor suppressor of lung cancer 1 (TSLC1), also known as SgIGSF, IGSF4, and SynCAM, is strongly expressed in spermatogenic cells undergoing the early and late phases of spermatogenesis (spermatogonia to zygotene spermatocytes and elongating spermatids to
Arends, Mark J. +9 more
core +1 more source