« Previous AbstractThe study of fingerprint characteristics of the emanations from human arm skin using the original sampling system by SPME-GC/MS    Next AbstractUniform formation of uranium oxide nanocrystals inside ordered mesoporous hosts and their potential applications as oxidative catalysts »

Comp Biochem Physiol A Mol Integr Physiol

Title:		Seasonal changes in thermogenesis and body mass in wild Mongolian gerbils (Meriones unguiculatus)
Author(s):		Zhang ZQ; Wang DH;
Address:		"State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 100101 Beijing, China"
Journal Title:		Comp Biochem Physiol A Mol Integr Physiol
Year:		2007
Volume:		20070524
Issue:		2
Page Number:		346 - 353
DOI:		10.1016/j.cbpa.2007.05.012
ISSN/ISBN:		1095-6433 (Print) 1095-6433 (Linking)
Abstract:		"Seasonal adjustments in body mass (BM), nonshivering thermogenesis (NST) and several physiological, hormonal, and biochemical markers were measured in wild-trapped Mongolian gerbils (Meriones unguiculatus) from Inner Mongolia, China. Sexual differences were detected in BM, NST, brown adipose tissue (BAT) mass, and mitochondrial protein content. BM and NST in males were higher in winter (January) and spring (May) than in summer (August), and BM of females was also the highest in winter, but NST remained relatively constant throughout the year. Cytochrome c oxidase activity and mitochondrial uncoupling protein 1 (UCP1) content in BAT were enhanced in winter in males or females, respectively. Serum leptin concentration was the lowest in winter and positively correlated with BM and body fat mass but was negatively correlated with BAT UCP1 content. These data suggest that wild Mongolian gerbils do not depend on a decrease in BM, but instead increase their thermogenic capacity to cope with cold stress. Leptin may be involved in the seasonal regulation in energy balance and thermogenesis in field Mongolian gerbils"
Keywords:		"Acclimatization Adipose Tissue, Brown/enzymology/growth & development/*metabolism Animals Basal Metabolism *Body Weight China Electron Transport Complex IV/metabolism Female Gerbillinae/growth & development/*metabolism Ion Channels/metabolism Leptin/blood;"
Notes:		"MedlineZhang, Zhi-Qiang Wang, De-Hua eng Comparative Study Research Support, Non-U.S. Gov't 2007/06/26 Comp Biochem Physiol A Mol Integr Physiol. 2007 Oct; 148(2):346-53. doi: 10.1016/j.cbpa.2007.05.012. Epub 2007 May 24"