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Nuclear mechanostability emerges from satellite DNA condensation into chromocenters
Brändle FB +14 more
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Perspectives: Approaches for Studying Livestock Spermatogonia
2023At present, the knowledge base on characteristics and biology of spermatogonia in livestock is limited in comparison to rodents, yet the importance of studying these cells for comparative species analysis and enhancing reproductive capacity in food animals is high. Previous studies have established that although many core attributes of organ physiology
Michela, Ciccarelli, Jon M, Oatley
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Zeitschrift f�r Zellforschung und Mikroskopische Anatomie, 1964
1. A description is given of form and components of the three types of spermatogonia: type A, I, and B. 2. The distribution of the stem cells (=type A-spermatogonia at the beginning of the cycle, i.e. after the release of the mature sperms) is rather irregular. 3. The mean number of stem cells per cross section of a tubule is
M F, KRAMER, A, DE LANGE, M B, VISSER
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1. A description is given of form and components of the three types of spermatogonia: type A, I, and B. 2. The distribution of the stem cells (=type A-spermatogonia at the beginning of the cycle, i.e. after the release of the mature sperms) is rather irregular. 3. The mean number of stem cells per cross section of a tubule is
M F, KRAMER, A, DE LANGE, M B, VISSER
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Xenogeneic transplantation of human spermatogonia
Zygote, 2000In the last 3 years, several studies have shown that xenogeneic transplantation of rodent spermatogonia is feasible. The treatment of infertile patients with spermatogenic arrest using the injection of immature germ cells has yielded only poor results.
Reis Mm +6 more
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Configuration and distribution of bovine spermatogonia
Cell and Tissue Research, 1995The configuration and distribution of bovine spermatogonia, preleptotene primary spermatocytes and Sertoli cells in the basal seminiferous tubular compartment have been studied by means of whole-mount preparations, immunohistochemistry and quantitative morphology. Three types of spermatogonia (Sg) can be identified.
K H, Wrobel +3 more
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Renewal of spermatogonia in man
American Journal of Anatomy, 1966AbstractThe spermatogonia of normal adult human testis were investigated in view of clarifying their mode of proliferation and renewal. Three main types of spermatogonia were identified: the dark type A spermatogonia (Ad) tentatively considered as the stem cells, the pale type A spermatogonia (Ap) and the type B spermatogonia (B), these being the more ...
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221 Isolation of turkey spermatogonia
Reproduction, Fertility and Development, 2019Across different types of spermatogenic epithelium, researchers have focused on the study and production of spermatogonial stem cells and their use as genetic material for creating gene pool cryobanks of valuable breeds and lines of poultry. The aim of our research was to identify optimal conditions for obtaining and culturing turkey spermatogonia.
E. K. Tomgorova +6 more
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Action of mitomycin C on mouse spermatogonia
Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 1973Abstract The induction of chromosome aberrations in mouse spermatogonia and bone marrow cells by treatment with Mitomycin (MC) was tested. The following dosages were used: 3.5; 1.75; 0.35; and 0.035 mg/kg body weight. Chromatid interchanges and terminal deletions were induced in both tissues.
A, Manyak, E, Schleiermacher
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Isolation and transplantation of spermatogonia in sheep
Theriogenology, 2006Studies in rodents show that spermatogonial transplantation is an excellent new tool for studying spermatogenesis and for preservation and dissemination of genetics. The aim of this study was to adapt the technique to rams. Two issues were addressed: purification of stem cell spermatogonia, and efficient injection of donor spermatogonia into the ...
Jose Rafael, Rodriguez-Sosa +2 more
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Mutagenesis in murine spermatogonia by mopp therapy
Reproductive Toxicology, 1987Male mice were given mechlorethamine (2.0 mg/kg) followed immediately or 1, 2, 4, or 8 h later by procarbazine (100 mg/kg) and vincristine (0.67 mg/kg) in a protocol that stimulated the drugs and dosages used in a single cycle of clinical MOPP therapy.
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