Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
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Σάββατο 10 Ιουνίου 2017

Expression patterns of p38αMAPK during follicular development in the ovaries of neonatal rats

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Publication date: Available online 10 June 2017
Source:Acta Histochemica
Author(s): Shifu Hu, Meng Rao, Hui Lei, Yanqing Wu, Yingying Wang, Dandan Ke, Wei Xia, Changhong Zhu
The p38αMAPK signaling pathway plays a critical role in female reproduction, but an understanding of its expression in rats remains elusive. This study was carried out to investigate the temporal and spatial expression of p38αMAPK and p-p38αMAPK. Ovarian tissue samples were collected from 2-, 4-, 8-, 12-, 16-, 20- and 30-day-old female rats. Western blotting was used to examine the relative expression of p38αMAPK and p-p38αMAPK in ovarian tissue, and subcellular localization was examined using immunohistochemistry of the rat ovaries at different ages of postpartum. The immunohistochemical results showed that p38αMAPK and p-p38αMAPK were widely expressed in the rat ovaries, mainly localized in the follicle cells and granulosa cells. The expression of p38αMAPK was relatively stable for the different stages of oocytes, whereas the expression of p-p38αMAPK gradually increased. At different stages of granulosa cells, the expression of p38αMAPK was also relatively stable, and the p-p38αMAPK expression showed an upward trend during follicular development. Western blotting revealed that the expression of p38αMAPK in the ovaries was relatively stable, where as p-p38αMAPK expression initially exhibited an increasing trend and subsequently decreased, with a maximum at day 20. The expression patterns of p38αMAPK and p-p38αMAPK in the rat ovaries indicate their possible involvement in folliculogenesis. Taken together, the stage- and cell-specific expression of p-p38αMAPK in rat ovaries indicated that p-p38αMAPK might play a vital role during rat follicular development.



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