Free running circadian rhythms of melatonin, luteinizing hormone, and cortisol in Syrian hamsters bearing the circadian tau mutation.

Abstract

The tau mutation of Syrian hamsters induces a robust reduction in the period of circadian activity rhythms, from 24 h (wild-type; tau++) to 22 h (heterozygote; tauS+) and 20 h (homozygous mutant, tauSS). Here, we examine the effect of this mutation on circadian rhythms of LH, melatonin, and cortisol in ovariectomized hamsters. Free running circadian rhythms… (More)

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