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Ssrp governs germline development independent of the FACT complex in Drosophila spermatogenesis. [PDF]
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Annales d'Endocrinologie, 2022
Male infertility contributes to 50% of all cases of infertility. The main cause is low quality and quantity of sperm. In humans, spermatogenesis starts at the beginning of puberty and lasts lifelong. It is under the control of FSH and testicular androgens, and mainly testosterone (T), and therefore requires a normal gonadotroph axis, intratesticular T ...
Sophie, Christin-Maitre, Jacques, Young
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Male infertility contributes to 50% of all cases of infertility. The main cause is low quality and quantity of sperm. In humans, spermatogenesis starts at the beginning of puberty and lasts lifelong. It is under the control of FSH and testicular androgens, and mainly testosterone (T), and therefore requires a normal gonadotroph axis, intratesticular T ...
Sophie, Christin-Maitre, Jacques, Young
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BioFactors, 2001
AbstractPHGPx of rat sperm mitochondrial capsule is cross‐linked and inactive. The enzyme is in part released in an active form by mercaptoethanol. Treatment with H2O2 of reduced and solubilised capsule proteins, in the absence of any added reductant, results in: i) H2O2 consumption which depends on the presence of both, PHGPx activity and protein ...
ROVERI, ANTONELLA +3 more
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AbstractPHGPx of rat sperm mitochondrial capsule is cross‐linked and inactive. The enzyme is in part released in an active form by mercaptoethanol. Treatment with H2O2 of reduced and solubilised capsule proteins, in the absence of any added reductant, results in: i) H2O2 consumption which depends on the presence of both, PHGPx activity and protein ...
ROVERI, ANTONELLA +3 more
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Sulphasalazine and Spermatogenesis
Digestion, 1982The semen of 11 patients with inflammatory bowel disease treated with sulphasalazine (Salazopyrin) was analysed and compared with that of 6 men with similar disease not treated with the drug. The treated group had significantly reduced sperm population density and motility compared with the untreated group.
J G, Freeman, V A, Reece, C W, Venables
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2012
During spermatogenesis, pluripotent germ cells differentiate to become efficient delivery vehicles to the oocyte of paternal DNA. Though male and female germ cells both undergo meiosis to produce haploid complements of DNA, at the same time they also each undergo distinct differentiation processes that result in either sperm or oocytes.
Diana S, Chu, Diane C, Shakes
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During spermatogenesis, pluripotent germ cells differentiate to become efficient delivery vehicles to the oocyte of paternal DNA. Though male and female germ cells both undergo meiosis to produce haploid complements of DNA, at the same time they also each undergo distinct differentiation processes that result in either sperm or oocytes.
Diana S, Chu, Diane C, Shakes
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The Anatomical Record, 1972
AbstractThe cycle of the seminiferous epithelium of the dog was divided into eight stages, using as criteria the shape of the spermatid nucleus, the location of spermatids and spermatozoa in regard to the basement membrane, the presence of meiotic figures and the release of spermatozoa from the lumen of the tubule.
R H, Foote, E E, Swierstra, W L, Hunt
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AbstractThe cycle of the seminiferous epithelium of the dog was divided into eight stages, using as criteria the shape of the spermatid nucleus, the location of spermatids and spermatozoa in regard to the basement membrane, the presence of meiotic figures and the release of spermatozoa from the lumen of the tubule.
R H, Foote, E E, Swierstra, W L, Hunt
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General and Comparative Endocrinology, 2010
Spermatogenesis is a developmental process during which a small number of diploid spermatogonial stem cells produce a large number of highly differentiated spermatozoa carrying a haploid, recombined genome. We characterise morphologically the different germ cell stages with particular attention for the spermatogonial generations, including the stem ...
Rüdiger W, Schulz +7 more
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Spermatogenesis is a developmental process during which a small number of diploid spermatogonial stem cells produce a large number of highly differentiated spermatozoa carrying a haploid, recombined genome. We characterise morphologically the different germ cell stages with particular attention for the spermatogonial generations, including the stem ...
Rüdiger W, Schulz +7 more
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Fertility and Sterility, 2014
In mammals, male gametes are produced inside the testis by spermatogenesis, which has three phases: mitotic proliferation of spermatogonia, meiosis of spermatocytes, and haploid differentiation of spermatids. The genome of male germ cells is actively transcribed to produce phase-specific gene expression patterns.
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In mammals, male gametes are produced inside the testis by spermatogenesis, which has three phases: mitotic proliferation of spermatogonia, meiosis of spermatocytes, and haploid differentiation of spermatids. The genome of male germ cells is actively transcribed to produce phase-specific gene expression patterns.
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Epigenetics in spermatogenesis
Molecular and Cellular Endocrinology, 2009DNA methylation is a heritable epigenetic modification of cytosine residues within CpG dinucleotides associated with the modulation of gene expression and found at 20-30 million sites throughout the mammalian genome. The methylation of DNA is catalyzed by DNA (cytosine-5)-methyltransferases (DNMTs), regulates genes during development and plays a role ...
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Microtubules and spermatogenesis
Seminars in Cell & Developmental Biology, 2014Microtubules are dynamic polymers of tubulin subunits that underpin many essential cellular processes, such as cell division and migration. Spermatogenesis is the process by which spermatogenic stem cells undergo mitotic and meiotic division and differentiation to produce streamlined spermatozoa capable of motility and fertilization.
O'Donnell, L., O'Bryan, M.
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