Is FSH combined with equine chorionic gonadotropin able to modify lipid metabolism in bovine superstimulated antral follicles?

Author(s)

Santos, Priscila Helena ; Franchi, Fernanda Fagali ; Nunes, Sarah Gomes ; Fontes, Patricia Kubo ; Giroto, Alan Brunholi ; Mani, Fernanda ; de Souza Castilho, Anthony Cesar

• Document type: Journal article
• Source: ANIMAL REPRODUCTION; v. 21, n. 2, p. 9-pg., 2024-01-01.

Abstract

Lipid metabolism is essential for ensuring oocyte maturation and embryo development. beta-Oxidized fatty acids (FA) are a potent source of energy for cells, particularly for bovine somatic follicular cells. Superstimulatory protocols using follicle stimulating hormone (FSH) or FSH combined with equine chorionic gonadotropin (eCG) are capable of stimulating the follicular microenvironment and drive the expression of biomarker genes associated with lipid metabolism in the cumulus-oocyte complex (COC) for better embryo development. In this study, we assesed the effects of FSH and FSH/eCG protocols on the expression of genes related to lipid metabolism in bovine granulosa cells (GCs). Further, we measured triglyceride levels in follicular fluid (FF) obtained from both superstimulatd and non-superstimulated cows (synchronized cows). In summary, superstimulation with gonadotropins maintained the TG levels in bovine FF and ensured GCs mRNA abundance of ACSL1, ACSL3, ACSL6, SCD, ELOVL5, ELOVL6, FASN, FADS2, and SREBP1. We, however, found the abundance of CPTIB mRNA to be lower in GCs obtained from cows subjected to FSH/eCG protocols than synchronized cows. In conclusion, the findings of this study showed that ovarian superstimulation around the preovulatory phase has a mild impact on the lipid metabolism in GCs. (AU)

• FAPESP's process: 15/04505-5 - Characterization of microRNAs (miRNAs) in bovine antral follicles from Nelore cows: involvement during ovarian follicle cells differentiation and regulation of LH receptor (LHR) expression
• Grantee: Anthony César de Souza Castilho
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 13/11480-3 - Characterization of microRNAs (miRNAs) in bovine antral follicles from Nelore cattle: involvement during ovarian follicle cells differentiation and regulation of LH receptor (LHr) expression
• Grantee: Anthony César de Souza Castilho
• Support Opportunities: Research Grants - Young Investigators Grants