The present study examined the dose- and time-dependent central effects of an estradiol chemical delivery system cyclodextrin complex (E(2)-CDS-CD) on the reestablishment of copulatory behavior of castrated male and ovariectomized female rats with concomitant determination of the blood luteinizing hormone (LH) and E(2) levels. In orchidectomized males,… (More)
gamma-Endorphin inhibits the amphetamine-induced stereotypy in rats with an approximate ED50 of 0.3 mg/kg. SC. The anti-amphetamine effect of gamma-endorphin can be antagonized to a certain extent by both the dopamine receptor stimulant 2-bromo-ergocryptine and the opiate receptor antagonist naloxone.