Effects of oestrogen and progesterone on rat pineal N-acetyl transferase activity and melatonin production
- PMID: 658265
- DOI: 10.1007/BF01937023
Effects of oestrogen and progesterone on rat pineal N-acetyl transferase activity and melatonin production
Abstract
We have extended previous studies on pineal beta-receptors to include effects of oestradiol or PMSG treatment in the immature female rat. Neither manipulation has any effect on norepinephrine-induced N-acetyl transferase (NAT) activity in vitro. In the adult ovariectomised rat oestrogen/progesterone priming exerts a small sensitising effect to beta-stimulation with isoproterenol. Progesterone alone, in vitro, inhibits the release of melatonin from pineals of adult ovariectomised rats.