Altered body mass regulation in male mPeriod mutant mice on high-fat diet

UMMS Affiliation

Department of Neurobiology; Weaver Lab

Publication Date


Document Type



Animals; Body Weight; Circadian Rhythm; Dietary Fats; Eating; Female; Male; Mice; Mice, Knockout; Mice, Mutant Strains; Mutation; Period Circadian Proteins; Sex Characteristics; Weight Gain


Neuroscience and Neurobiology


The circadian clock orchestrates most physiological processes in mammals. Disruption of circadian rhythms appears to contribute to the development of obesity and metabolic syndrome. The Period genes mPer1 and mPer2, but not mPer3, are essential for core clock function in mice. To assess the impact of mPer genes on body mass regulation, mPer mutant and control mice were fed a high-fat diet. Here the authors report that male mPer1/2/3 triple-deficient mice gain significantly more body mass than wild-type controls on high-fat diet. Surprisingly, mPer3 single-deficient animals mimicked this phenotype, suggesting a previously unrecognized role for mPer3 in body mass regulation.

DOI of Published Version



Chronobiol Int. 2010 Jul;27(6):1317-28. Link to article on publisher's site

Journal/Book/Conference Title

Chronobiology international

Related Resources

Link to Article in PubMed

PubMed ID