Results 11 to 20 of about 66,364 (295)

Single-Cell RNA Sequencing of the Testis of Ciona intestinalis Reveals the Dynamic Transcriptional Profile of Spermatogenesis in Protochordates

open access: yesCells, 2022
Spermatogenesis is a complex and continuous process of germ-cell differentiation. This complex process is regulated by many factors, of which gene regulation in spermatogenic cells plays a decisive role.
Yanan Li   +11 more
doaj   +1 more source

Oestrogens and spermatogenesis [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2010
The role of oestrogens in male reproductive tract physiology has for a long time been a subject of debate. The testis produces significant amounts of oestrogenic hormones, via aromatase, and oestrogen receptors (ERs)α (ESR1) and ERβ (ESR2) are selectively expressed in cells of the testis as well as the epididymal epithelium, depending upon species ...
Carreau, Serge, Hess, Rex A.
openaire   +5 more sources

Ubiquitin-Proteasome System–Regulated Protein Degradation in Spermatogenesis

open access: yesCells, 2022
Spermatogenesis is a prolonged and highly ordered physiological process that produces haploid male germ cells through more than 40 steps and experiences dramatic morphological and cellular transformations.
Yi Xiong, Chao Yu, Qianting Zhang
doaj   +1 more source

Estrogen and Spermatogenesis* [PDF]

open access: yesEndocrine 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.
Evan R. Simpson   +4 more
openaire   +5 more sources

Proteomic analysis and miRNA profiling of human testicular endothelial cell-derived exosomes: the potential effects on spermatogenesis

open access: yesAsian Journal of Andrology, 2022
Testicular endothelial cells have been found to play an important role in spermatogenesis and fertility, but their mechanism is obscure. Exosomes released by various cells are recognized as cell–cell communication mediators during the initiation and ...
Wen-Peng Song   +7 more
doaj   +1 more source

Spermatogenesis in the Microminipig [PDF]

open access: yesToxicologic Pathology, 2016
The microminipig has considerable potential as an animal model to evaluate general toxicity; however, there are few studies on the male reproductive system, particularly regarding spermatogenesis. The objectives of the present study were to clarify the stages of the seminiferous epithelium cycle on the basis of spermiogenesis and to determine the ...
Masatoshi Shibata   +5 more
openaire   +3 more sources

Kinesins in spermatogenesis† [PDF]

open access: yesBiology of Reproduction, 2017
Kinesins are essential for the proper function of many types of polar cells, including epithelial cells, neurons, and sperm. Spermatogenesis is closely associated with many different kinesins. These kinesins participate in several fundamental processes, including mitotic and meiotic division, essential organelle transport, and the biogenesis of ...
Wan-Xi Yang, Da-Hui Wang, Dan-Dan Ma
openaire   +3 more sources

Spermatogenesis [PDF]

open access: yesWormBook, 2006
Spermatogenesis creates functional sperm from an initially undifferentiated germ cell. In the nematode Caenorhabditis elegans, both males and hermaphrodites engage in spermatogenesis. The hermaphrodite germ line, like that of the male, initiates spermatogenesis during the L4 larval stage.
openaire   +2 more sources

Transcriptome profiling of laser-captured germ cells and functional characterization of zbtb40 during 17alpha-methyltestosterone-induced spermatogenesis in orange-spotted grouper (Epinephelus coioides)

open access: yesBMC 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

The cytoskeleton in spermatogenesis [PDF]

open access: yesReproduction, 2019
As germ cells progress through spermatogenesis, they undergo a dramatic transformation, wherein a single, diploid spermatogonial stem cell ultimately produces thousands of highly specialised, haploid spermatozoa. The cytoskeleton is an integral aspect of all eukaryotic cells.
Dunleavy, J.E.M.   +3 more
openaire   +4 more sources

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