Abstract
The reproductive cycle of female rats is characterized by the occurrence of the preovulatory gonadotropin-induced ovarian steroids surges. Norepinephrine is a major neurotransmitter involved in the regulation of the hypothalamic-pituitary-gonadal axis, and the noradrenergic neurons an important mediator of the ovarian steroids actions in the genesis of the gonadotropin surge. The reproduc…