Evidence that olfactory bulbectomy does not influence testicular regression in golden hamsters on short photoperiod by altering pineal melatonin production |
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Authors: | D R Pieper R J Reiter P D Unthank J F Addy |
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Institution: | (1) Department of Physiology, Providence Hospital, 48037 Southfield, Michigan, USA;(2) Department of Cellular and Structural Biology, The University of Texas Health Science Center at San Antonio, 78284 San Antonio, Texas, USA |
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Abstract: | Summary A recent study has shown that olfactory bulbectomy (BX) will prevent reproductive regression associated with short photoperiod in male golden hamsters. The results of experiments reported in this paper show that bulbectomized hamsters on long or short photoperiod still show a large nocturnal elevation in pineal melatonin production and that BX inhibits the reproductive regression induced by exogenous melatonin in pinealectomized hamsters. The data therefore indicate that BX does not inhibit short photoperiod induced testicular regression by altering melatonin secretion. |
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