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Microtubule configuration and its relationship to sperm morphology in mammalian spermiogenesis
(2008)
The acrosome is a secretory vesicle located in the mammalian sperm head. Its main function is to transport hydrolytic enzymes. These enzymes will dissolve the zona pellucid, assisting the sperm in fertilizing the egg. The ...
Intracellular Ca2+ homeostasis in rat round spermatids
(Elsevier, 1998)
Intracellular calcium, [Caz+], can regulate meiotic progression of mammalian oocytes. However,
the role of [Ca2+], in the regulation of the spermatogenic process and its cellular homeostatic mechanisms
in spermatogenic ...
Intracellular pH regulation in rat round spermatids
(Wiley-Blackwell Publishing Ltd, 1997)
Intracellular pH has been shown to be an important physiological parameter in cell cycle control and differentiation, aspects that are central to the spermatogenic process. However, the pH regulatory mechanisms in spermatogenic ...
Permeability changes induced by polylysines in rat spermatids
(2002)
High molecular weight (HMW, >15 kDa) but not low molecular weight (LMW, <15 kDa) polylysines (PLs) bound and induced permeability changes in rat spermatid plasma membranes, estimated by Mn2+ quenching of intracellular ...
BRDT is an essential epigenetic regulator for proper chromatin organization, silencing of sex chromosomes and crossover formation in male meiosis
(Public Library Science, 2018)
The double bromodomain and extra-terminal domain (BET) proteins are critical epigenetic
readers that bind to acetylated histones in chromatin and regulate transcriptional activity
and modulate changes in chromatin structure ...
Apoptosis, necrosis and autophagy are influenced by metabolic energy sources in cultured rat spermatocytes
(2012)
Apoptosis, necrosis and autophagy are mechanistically related processes that control tissue homeostasis and cell survival. In the testis, germ cell death is important for controlling sperm output, but it is unknown whether ...
Espermatogénesis y ciclo anual reproductivo del capaz, Pimelodus grosskopfii (Pisces: Pimelodidae), en el alto río Magdalena, Colombia
(Universidad Nacional de Colombia, 1997-07-01)
Esta investigación documenta los cambios histomorfológicos anuales en los testes de la población de capaz, P. grosskopfíí, atrapada aguas arriba del embalse de Betania en al alto río Magdalena, y establece el ciclo ...