Detection of the effects and potential interactions of FSH, VEGFA, and 2‐methoxyestradiol in follicular angiogenesis, growth, and atresia in mouse ovaries

Jinbi Zhang, Jun Zhang, Beibei Gao, Yinxue Xu, Honglin Liu, Zengxiang Pan
In: Molecular Reproduction and Development · 2019 · vol. 86(5) , pp. 566–575 · doi:10.1002/mrd.23133 · PMID:30806494 · W2916087119
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⚙ AI-generated summary by claude@2026-06, 2026-06-09 ⓘ

This study investigated how VEGF120, FSH, and 2ME2 affect follicular development, angiogenesis, and atresia in mouse ovaries, finding they have specific roles in these processes, with FSHR being crucial for VEGFA function.

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Abstract

Ovarian follicular development is a complex process that requires codevelopment of the perifollicular vascular network, which is closely regulated by angiogenic factors, gonadotropins, sex steroids, and their metabolites. To detect the effects of vascular endothelial growth factor 120 (VEGF120), follicle-stimulating hormone (FSH), and 2-methoxyestradiol (2ME2) on follicular angiogenesis during development and atresia, we treated sexually immature and mature female mice with VEGF120, FSH, 2ME2, and FSH receptor (FSHR) antagonist singly or in combination via intraperitoneal injection. The number of follicles and their perifollicular angiogenesis and atresia rates at different developmental stages were examined in paraffin sections after hematoxylin and eosin staining. The results showed that the exogenous factors have specific and precise effects on developmental, angiogenesis, and atresia processes in follicles of different sizes in mature and immature mice. Perifollicular angiogenesis was regulated by VEGFA and closely related to follicular development and atresia. 2ME2 affected angiogenesis through VEGFA and might regulate atresia directly. FSH might control VEGFA function via both transcriptional and posttranscriptional mechanisms because FSHR was required for achieving VEGFA functions at all the follicular development stages. The present study presents insights into the mechanisms of FSH, 2ME2, and VEGFA in follicular development and disorders and provides a foundation for the development of new therapeutic strategies.

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