Results 11 to 20 of about 7,796 (196)
HIPK4 is essential for murine spermiogenesis
eLife, 2020 Mammalian spermiogenesis is a remarkable cellular transformation, during which round spermatids elongate into chromatin-condensed spermatozoa. The signaling pathways that coordinate this process are not well understood, and we demonstrate here that ...
J Aaron Crapster +12 more
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Folia Histochemica et Cytobiologica, 2008 Spermiogenesis in Chara algae, which has been divided into 10 phases (sp I-X), is similar to spermiogenesis in animals. The most important process during spermiogenesis in animals is remodeling of chromatin leading to "sleeping genome", being the result ...
Agnieszka Wojtczak +3 more
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The impact of autophagy in spermiogenesis
Asian Journal of Andrology, 2017 Autophagy is an evolutionarily conserved self-digestion process which is essential to keep basal homeostasis in a cell. During this process, degradation and recycling of many cytoplasmic components including the long-lived, unnecessary or aggregated proteins and damaged organelles is achieved through lysosomal machinery.
Nihan Ozturk +2 more
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浙江大学学报. 农业与生命科学版, 2008 Ultrastructures of spermatozoon tail in the rice water weevil, Lissorhoptrus oryzophilus, were observed via transmission electron microscopy at selected sperm developmental stages with the aim at clarifying spermiogenesis in this weevil.
HE Yan +3 more
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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
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Journal of Lipid Research, 2010 Delta-6 desaturase-null mice (−/−) are unable to synthesize highly unsaturated fatty acids (HUFAs): arachidonic acid (AA), docosahexaenoic acid (DHA), and n6-docosapentaenoic acid (DPAn6).
Manuel Roqueta-Rivera +9 more
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Tex13a Optimizes Sperm Motility via Its Potential Roles in mRNA Turnover
Frontiers in Cell and Developmental Biology, 2021 mRNAs have been found to undergo substantial selective degradation during the late stages of spermiogenesis. However, the mechanisms regulating this biological process are unknown. In this report, we have identified Tex13a, a spermatid-specific gene that
Yinchuan Li +10 more
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Loss of Axdnd1 causes sterility due to impaired spermatid differentiation in mice
Reproductive Medicine and Biology, 2022 Purpose Spermiogenesis, the process of deformation of sperm head morphology and flagella formation, is a phenomenon unique to sperm. Axonemal dynein light chain proteins are localized to sperm flagella and are known to be involved in sperm motility. Here,
Yuki Hiradate +10 more
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MEIG1 is essential for spermiogenesis in mice [PDF]
Proceedings of the National Academy of Sciences, 2009 Spermatogenesis can be divided into three stages: spermatogonial mitosis, meiosis of spermatocytes, and spermiogenesis. During spermiogenesis, spermatids undergo dramatic morphological changes including formation of a flagellum and chromosomal packaging and condensation of the nucleus into the sperm head.
Zhibing, Zhang +8 more
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The Microtubule Cytoskeleton during the Early Drosophila Spermiogenesis
Cells, 2020 Sperm elongation and nuclear shaping in Drosophila largely depends on the microtubule cytoskeleton that in early spermatids has centrosomal and non-centrosomal origins.
Maria Giovanna Riparbelli +2 more
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