Elsevier

Brain Research

Volume 693, Issues 1–2, 25 September 1995, Pages 261-266
Brain Research

Increased light intensity prevents the age related loss of vasopressin-expressing neurons in the rat suprachiasmatic nucleus

https://doi.org/10.1016/0006-8993(95)00933-HGet rights and content

Abstract

We investigated whether increased light input can counteract the age-related decrease in vasopressin- (AVP) and vasoactive intestinal polypeptide (VIP)-expressing neurons of the suprachiasmatic nucleus (SCN) by determining the numbers of these neurons in rats of different ages, housed under low or high intensities of light. The significant age-related decrease for AVP was prevented in old animals after high light housing. For VIP, no effects were found.

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