ABSTRACT
Leptin participates in regulation of ovarian folliculogenesis indirectly via control
of luteinizing hormone and follicle-stimulating hormone secretion. More recent evidence
suggests that leptin also has direct regulatory actions on the developing follicle.
The presence of leptin receptors on follicular cells, including oocytes, and early
preimplantation embryos suggests that leptin may play a direct physiologic role in
follicular maturation, oocyte development, and early cleavage. Because circulating
leptin levels are directly related to body adiposity, elevated leptin concentrations
associated with obesity may partly explain the negative impact of obesity on fertility.
The influence of leptin on follicular development and oocyte maturation has important
implications for ovulation induction and assisted reproductive technologies. Moreover,
polycystic ovarian syndrome may be associated with altered leptin phsyiology.
KEYWORDS
Leptin - ovary - gonadotropin stimulation - in vitro fertilization - polycystic ovarian
syndrome