Difference in mitochondrial gene expression in granulosa cells between recombinant FSH and hMG cycles under in vitro fertilization and transfer

Abstract

Purpose: Examination of the mitochondrial mRNA expression in granulosa cells from an unspecified population of infertile patients to evaluate whether recombinant follicle stimulating hormone (recFSH) is more effective in producing higher quality embryo rates compared with human menopausal gonadotropin (hMG). Method: Thirty-nine patients who underwent the in vitro fertilization and embryo transfer program were retrospectively examined. Patients were administered recFSH (n = 18) or hMG (n = 20) in a long protocol where GnRH agonist was used. Granulosa cells were obtained during oocyte retrieval and examined for mitochondria mRNA expression ratio against GAPDH. Expressions of mitochondria mRNA were evaluated by real-time PCR analysis. Results: The high-quality embryo rate in the hMG cycle was higher than in the recFSH cycle, and the total dose of hMG showed a positive correlation with the expression level of mitochondrial genes in granulosa cells. Moreover, mitochondria mRNA expression was higher in the hMG cycle than in the recFSH cycle. Conclusions: Compared with recFSH, hMG induces a higher mitochondrial gene expression ratio in granulosa cells at the time of oocyte retrieval and, therefore, may lead to higher quality embryo rates. © 2013 Japan Society for Reproductive Medicine.