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• W2591928287 abstract "The aim of this study was to examine whether an elevated ambient temperature (37–40 °C) had an effect on the apoptosis of germ cells and the expression of Bcl-2 and Bax in porcine testis. Six boars were used. Three boars were subjected to an elevated ambient temperature (37–40 °C, 7 days, 3 h per day) as a heat stress (HS) group. The other 3 boars were kept in a room temperature house (20–27 °C) as a control group. All boars were castrated and the testes were harvested. TUNEL assay was used for the detection of apoptotic cells. Immunohistochemistry, Western blotting and quantitative real-time PCR were used to analyze protein and mRNA levels of Bcl-2 and Bax in response to heat treatment. The results showed that apoptotic signals increased under heat stress conditions compared with the control (P < 0.01), and the cell types most affected by heat treatment were spermatocytes and spermatids. In both the control and experimental groups, Bcl-2 was expressed in the cytoplasm and nucleus of spermatogonia, spermatocytes and differentiating spermatids and Bcl-2 preferentially localized close to the seminiferous tubule's luminal surface in late spermatocytes and spermatids. Compared with the control group, the expression levels of Bcl-2 protein and mRNA significantly increased in heat treatment group, while the expression levels of Bax protein and mRNA did not show significant changes between the control and experimental group. Low to moderate Bax immunoreactivity staining was observed in all kinds of germ cells in the control group. Strong staining was observed in spermatogonia, and low to moderate Bax staining was observed in spermatocytes and spermatids. A redistribution of Bax from a cytoplasmic to perinuclear or nuclear localization could be observed in the spermatogonia, spermatocytes and spermatids obtained in the heat treated group. These results showed that elevated ambient temperatures induced germ cell apoptosis. In response to heat stress, the expression of Bcl-2 increased and a redistribution of Bax from a cytoplasmic to a perinuclear or nuclear localization. This indicates that Bcl-2 and Bax may be involved in regulation of germ cell apoptosis induced by heat stress in boars." @default.
• W2591928287 created "2017-03-16" @default.
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• W2591928287 date "2017-04-01" @default.
• W2591928287 modified "2023-10-14" @default.
• W2591928287 title "Germ cell apoptosis and expression of Bcl-2 and Bax in porcine testis under normal and heat stress conditions" @default.
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• W2591928287 doi "https://doi.org/10.1016/j.acthis.2016.09.003" @default.
• W2591928287 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28279507" @default.
• W2591928287 hasPublicationYear "2017" @default.
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