Summary
Using quantitative autoradiography, we have studied the influence of maternal plasma melatonin on the expression and density of melatonin receptors in the brain and pituitary of rat offspring. At birth, the same structures displayed melatonin receptors whether the rats were born to and reared by intact or pinealectomized dams. The receptor density was, however, about 20% lower in the group born to pinealectomized dams. At postnatal day 9, when the pups of both groups synthetize rhythmically their own melatonin, this difference was suppressed. These results indicate that melatonin does not appear to be a requirement for the expression of its receptors, but seems to play a stimulatory role in their synthesis.
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Zitouni, M., Masson-Pévet, M., Gauer, F. et al. Influence of maternal melatonin on melatonin receptors in rat offspring. J. Neural Transmission 100, 111–122 (1995). https://doi.org/10.1007/BF01271534
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DOI: https://doi.org/10.1007/BF01271534