Circadian mechanisms of food anticipatory rhythms in rats fed once or twice daily: clock gene and endocrine correlates.

By contrast with the night-fed group, the day-fed rats exhibited an increasing trend in Bmal1 expression during the light period but the two groups otherwise looked similar.

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Stomach clock genes: RT-PCR The profiles of clock gene expression from stomach tissue in rats fed at ZT16 were very similar to the profiles from adrenal tissue, with all transcripts except Npas2 showing a highly significant 24 h rhythm ( Fig. 2F–J ; Table 1 ).

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