Assessment of Proliferation and Apoptosis in Testes of Rats after Experimental Localized Electron Irradiation
| Autor: | Grigory Demyashkin, Sergey Koryakin, Aleksandr Moiseev, Vyatcheslav Saburov, Margarita Zatsepina, Maya Epifanova, Yulia Stepanova, Vladimir Shchekin, Matvey Vadyukhin, Petr Shegay, Andrei Kaprin |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Current Issues in Molecular Biology, Vol 44, Iss 11, Pp 5768-5777 (2022) |
| Druh dokumentu: | article |
| ISSN: | 44110391 1467-3045 1467-3037 |
| DOI: | 10.3390/cimb44110391 |
| Popis: | Background and purpose: With the emergence of linear accelerators in radiotherapy, it becomes necessary to accurately select new dosing regimens. The purpose of this study was to assess the morphological changes of spermatogenesis after radiation exposure. Materials and methods: Male Wistar rats (n = 40) were subjected to targeted ionizing radiation on a pulsed electron accelerator “NOVAC-11” with doses of 2, 8 and 12 Gy. Spermatogenesis was assessed a week later using light microscopy and immunohistochemical method (antibodies to Ki-67, Bcl-2, p53, Caspase 3). Results: A decrease in the number of normal germ cells was seen in all experimental groups, while radioresistant Sertoli and Leydig cells were barely affected. The most serious damage to the tubules and germ cells was observed in 8 and 12 Gy irradiation groups. IHC analysis of testes after irradiation showed a shift in the proliferative-apoptotic balance toward apoptosis of germ cells: a decrease in the expression levels of Ki-67 and Bcl-2, an increase in p53-positive and caspase 3-positive cells by the end of the experiment. Conclusion: Dose-dependent progressive pathomorphological changes in histoarchitectonics of the testes are traced, and a decrease in the number of germ cells is seen on the seventh day after irradiation with a pulsed electron accelerator “NOVAC-11”. |
| Databáze: | Directory of Open Access Journals |
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