Harvey H. Feder

Modulation of lordosis behavior by stimulation of noradrenergic receptor subtypes was examined in ovariectomized, estradiol benzoate (10 micrograms)-primed guinea pigs. In the first experiment, subcutaneous administration of the alpha-2-nor…

Ovariectomized guinea pigs were given free estradiol (E) at hr 0 and 28, and progesterone (P) at hr 39. Experiment 1: The alpha-1 noradrenergic antagonist prazosin, but not the alpha-2 noradrenergic antagonist idazoxan, prevented display of…

The facilitatory and inhibitory effects of prostaglandins PGE2 and PGF2α on lordosis behavior were compared in guinea pigs and rats. In the first part of experiment 1, PGE2 or PGF2α (500 µg) failed to facilitate significantly lordosis behav…

The involvement of progesterone (P) withdrawal during late pregnancy in the initiation of maternal behavior was examined in primigravid rats. Females that were ovariectomized (0), hysterectomized (H), or ovariectomized and hysterectomized (…