Abstract:
:The aim of this investigation was to study whether melatonin affects the release of oxytocin and vasopressin by the pituitary neurointermediate lobe of the Syrian hamster in vitro. The effect of melatonin was studied on the unstimulated (pre- and post-K+ -stimulated) release of oxytocin and vasopressin and on the response to K+ stimulation. Melatonin significantly inhibited unstimulated release of these hormones in all concentrations (10(-11) M, 10(-9) M and 10(-7) M) studied. K+ -stimulated release of oxytocin and vasopressin was significantly decreased by the 10(-9) M dose of melatonin. It is concluded that melatonin is active in modifying the release of these peptides in the Syrian hamster neurointermediate lobe, as it has been previously demonstrated in the rat hypothalamus.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Juszczak M,Debeljuk L,Bartke A,Stempniak Bdoi
10.1097/00001756-199512150-00004subject
Has Abstractpub_date
1995-12-15 00:00:00pages
2453-6issue
18eissn
0959-4965issn
1473-558Xjournal_volume
6pub_type
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