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Cutting the ovarian surface improves the responsiveness to exogenous hormonal treatment in aged mice

PURPOSE: Ovarian vascular abnormality and ovarian fibrosis are observed in the low responder patients and aging mice. Vascularization and fibrosis are regulated by injury‐repair system, such as wound. Thus, in this study, the authors tried to investigate the effect of the surgical treatment to ovari...

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Detalles Bibliográficos
Autores principales: Umehara, Takashi, Urabe, Nao, Obata, Toshiki, Yamaguchi, Takashi, Tanaka, Atsushi, Shimada, Masayuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7542011/
https://www.ncbi.nlm.nih.gov/pubmed/33071644
http://dx.doi.org/10.1002/rmb2.12345
Descripción
Sumario:PURPOSE: Ovarian vascular abnormality and ovarian fibrosis are observed in the low responder patients and aging mice. Vascularization and fibrosis are regulated by injury‐repair system, such as wound. Thus, in this study, the authors tried to investigate the effect of the surgical treatment to ovarian surface with cutting on the functions of ovary in aging mouse model, gcNrg1KO. METHOD: The ovarian surface of gcNrg1KO was surgically cut, and then the ovary was returned inside of bursa ovarica. To assess the effect of cutting on fertility, mating test, smear analysis, and exogenous hormonal treatment were done. Additionally, the histological analysis was used for observing the remodeling of ovarian stroma after the surgical approach. RESULT: Ovarian fibrosis disappeared at 7 days after surgery. With the abrogation of fibrosis, the blood vessels were fluently observed around the follicles, and the follicular development was re‐started. The responses against exogenous hormone were recovered at 21 days after the surgery, and estrous cycle and delivery were also recovered by the surgery and the fertility was maintained for 3 months. CONCLUSION: This cutting method of ovarian surface becomes a good option against low responder patients.