XB-ART-24972
Neurosci Lett
1991 Apr 01;1242:242-5. doi: 10.1016/0304-3940(91)90104-2.
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Melatonin receptor mRNA expression in Xenopus oocytes: inhibition of G-protein-activated response.
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Melatonin is the major endocrine product of the pineal gland in the mammalian brain and plays a variety of roles in photoperiodic functions. In order to investigate melatonin receptors, poly(A)+ RNA was extracted from pars tuberalis of the ovine pituitary and injected into oocytes of Xenopus laevis. After 3-5 days of incubation, functional melatonin receptors were expressed. Receptors were revealed by their inhibitory effect upon oscillatory currents resulting from AlF4-induced activation of G-proteins in the oocyte membrane under voltage clamp conditions. The effect of melatonin was dose-dependent, non-desensitizing and was not observed in uninjected oocytes.
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