Melatonin instantaneously resets intrinsic circadian rhythmicity in the rat suprachiasmatic nucleus

. 1996 Nov 08 ; 218 (3) : 181-4.

Jazyk angličtina Země Irsko Médium print

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/pmid08945758

In order to follow resetting of the rat circadian pacemaking system by melatonin in vivo, the rhythm in the light-induced c-fos expression was used as a marker of the intrinsic rhythmicity of the suprachiasmatic nucleus (SCN). A single melatonin administration during late day to rats maintained originally under a short photoperiod with 8 h of light per day or under a long photoperiod with 16 h of light per day phase advanced immediately the evening rise in the light-induced SCN c-Fos immunochemistry by about 1.5 h. The data indicate that melatonin administration in vivo may instantaneously reset the intrinsic SCN rhythmicity.

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