Morphology and Biochemistry of Ovulation

Author:

Medeiros Sebastião Freitas de12ORCID,Barbosa Bruna Barcelo2ORCID,Medeiros Matheus Antonio Souto de2ORCID,Yamamoto Márcia Marly Winck2ORCID

Affiliation:

1. Department of Gynecology and Obstetrics, Faculdade de Medicina, Universidade Federal do Mato Grosso, Cuiabá, Mato Grosso, MT, Brazil

2. Instituto Tropical de Medicina Reprodutiva, Cuiabá, Mato Grosso, MT, Brazil

Abstract

AbstractThe process of ovulation involves multiple and iterrelated genetic, biochemical, and morphological events: cessation of the proliferation of granulosa cells, resumption of oocyte meiosis, expansion of cumulus cell-oocyte complexes, digestion of the follicle wall, and extrusion of the metaphase-II oocyte. The present narrative review examines these interrelated steps in detail. The combined or isolated roles of the follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are highlighted. Genes indiced by the FSH genes are relevant in the cumulus expansion, and LH-induced genes are critical for the resumption of meiosis and digestion of the follicle wall. A non-human model for follicle-wall digestion and oocyte release was provided.

Publisher

Georg Thieme Verlag KG

Subject

Obstetrics and Gynaecology

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