Results 81 to 90 of about 213 (102)
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Peritubular macrophages phagocyte remains of undifferentiated spermatogonia in mouse testis
2022Abstract The cells involved in spermatogenesis are germ-cells, called spermatogonia, classified as: type A-undifferentiated, type A-intermediate and type B. During the spermatogenesis, more than 75% of the germ-cells undergo apoptosis and most of them are phagocyted by Sertoli cells.
María Fernanda Marra +5 more
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Molecular Reproduction and Development, 2022
AbstractHybrid male sterility (HMS) is a reproductive isolation mechanism limiting the formation of fertile offspring through interspecific fertilization. Cattleyak is the interspecific hybrid presenting significant heterosis in several economic traits, but HMS restricted its wide reproduction in cettleyak breeding.
Peng, Zhang +9 more
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AbstractHybrid male sterility (HMS) is a reproductive isolation mechanism limiting the formation of fertile offspring through interspecific fertilization. Cattleyak is the interspecific hybrid presenting significant heterosis in several economic traits, but HMS restricted its wide reproduction in cettleyak breeding.
Peng, Zhang +9 more
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Anatomia, Histologia, Embryologia, 1991
SummaryThree classes of spermatogonia were discerned: undifferentiated A spermatogonia (Ais, Apr, Aal), differentiated A spermatogonia (A1, A2) and differentiated B spermatogonia (B1, B2). Cell counts performed throughout the seminiferous epithelial cycle in the breeding season revealed that the number of undifferentiated A spermatogonia was lowest in ...
T, Tiba, I, Kita
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SummaryThree classes of spermatogonia were discerned: undifferentiated A spermatogonia (Ais, Apr, Aal), differentiated A spermatogonia (A1, A2) and differentiated B spermatogonia (B1, B2). Cell counts performed throughout the seminiferous epithelial cycle in the breeding season revealed that the number of undifferentiated A spermatogonia was lowest in ...
T, Tiba, I, Kita
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Reproduction in Domestic Animals
ABSTRACTAs the hybrid between cattle and yak, cattleyak is a typical male sterile mammal, and the underlying mechanism for its spermatogenic arrest is still unclear. In this study, the coding region of cattleyak TAF4B gene was cloned by RT‐PCR and analysed by bioinformatics.
Yuan Tian +8 more
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ABSTRACTAs the hybrid between cattle and yak, cattleyak is a typical male sterile mammal, and the underlying mechanism for its spermatogenic arrest is still unclear. In this study, the coding region of cattleyak TAF4B gene was cloned by RT‐PCR and analysed by bioinformatics.
Yuan Tian +8 more
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Current Opinion in Genetics & Development
Germ cells are unique in their ability to acquire totipotency. Toward this end, they reorganize their three-dimensional (3D) epigenome during their development, including epigenetic reprogramming in primordial germ cells that differentiate mitotic prospermatogonia and ensuing unique epigenetic programming for generating undifferentiated spermatogonia ...
Masahiro Nagano, Mitinori Saitou
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Germ cells are unique in their ability to acquire totipotency. Toward this end, they reorganize their three-dimensional (3D) epigenome during their development, including epigenetic reprogramming in primordial germ cells that differentiate mitotic prospermatogonia and ensuing unique epigenetic programming for generating undifferentiated spermatogonia ...
Masahiro Nagano, Mitinori Saitou
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GFRα‐1 is a reliable marker of bovine gonocytes/undifferentiated spermatogonia: A mini‐review
Anatomia, Histologia, Embryologia, 2020AbstractIdentification of the specific biomarkers is of great importance to enrich and expand the gonocytes or spermatogonial stem cells (SSCs) in livestock. The glial cell line‐derived neurotrophic factor (GDNF) family receptor alpha‐1 (GFRα‐1) is a conserved marker of the gonocytes/SSCs in multiple species including rodents, primates and human ...
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CDH1 is a specific marker for undifferentiated spermatogonia in mouse testes.
Biology of reproduction, 2007In the mammalian testis, spermatogenesis is initiated from a subset of stem cells belonging to undifferentiated type A spermatogonia. In spite of the biologic significance of undifferentiated type A spermatogonia, little is known about their behavior and properties because of a lack of specific cell surface markers.
Masutaka, Tokuda +3 more
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Identifying undifferentiated spermatogonia in patients with Klinefelter syndrome
Nature Reviews Urology, 2022openaire +2 more sources
PLZF protein forms a complex with protein TET1 to target TCF7L2 in undifferentiated spermatogonia
TheriogenologyThe transcription factor promyelocytic leukemia zinc finger (PLZF, also known as ZBTB16) is critical for the self-renewal of spermatogonial stem cells (SSCs). However, the function of PLZF in SSCs is not clear. Here, we found that PLZF acted as an epigenetic regulator of stem cell maintenance and self-renewal of germ cells.
Xiaomin Du +24 more
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Immunophenotyping of Undifferentiated Spermatogonia in Human Testes.
Biology of Reproduction, 2010Hanna Valli +3 more
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