[Leptin and its influence on the main gynecoobstetric diseases].

Leptin is a protein hormone synthesized and secreted by adipose tissue and also probably in other organs and systems in human body. It has multiple functions such as to regulate feed intake and energy balance, gonadal regulation, action in the hypothalamo-pituitary-gonadal axis, regulates the metabolism of the fetal-placental unit in the pregnancy, fertility and reproductive systems, actions in the endometrium, mammary gland with corresponding influences on important physiologic processes such as menstruation, pregnancy and lactation. In the gynecologic surgery the serum leptin concentration is also modified. The knowledge of serum leptin concentration in the oncological diseases is going-up. Leptin is modified in the choriocarcinoma, Meigs' syndrome and other tumors. A better understanding of regulatory mechanisms will have direct clinical significance, as leptin has been proposed to impact on those causes of human perinatal morbidity and mortality that are associated with abnormalities of fetal maturity and development, general concept growth, trophoblast endocrinology, and placental sufficiency. Further investigations in this area will be necessary to improve new knowledge and a better understanding of the actions about this hormone.