PMID- 22414572 OWN - NLM STAT- MEDLINE DCOM- 20121001 LR - 20120523 IS - 1872-6216 (Electronic) IS - 0047-6374 (Linking) VI - 133 IP - 5 DP - 2012 May TI - Differential responses of white adipose tissue and brown adipose tissue to caloric restriction in rats. PG - 255-66 LID - 10.1016/j.mad.2012.02.003 [doi] AB - Caloric restriction (CR) slows the aging process and extends longevity, but the exact underlying mechanisms remain debatable. It has recently been suggested that the beneficial action of CR may be mediated in part by adipose tissue remodeling. Mammals have two types of adipose tissue: white adipose tissue (WAT) and brown adipose tissue (BAT). In this study, proteome analysis using two-dimensional gel electrophoresis combined with MALDI-TOF MS, and subsequent analyses were performed on both WAT and BAT from 9-month-old male rats fed ad libitum or subjected to CR for 6 months. Our findings suggest that CR activates mitochondrial energy metabolism and fatty acid biosynthesis in WAT. It is likely that in CR animals WAT functions as an energy transducer from glucose to energy-dense lipid. In contrast, in BAT CR either had no effect on, or down-regulated, the mitochondrial electron transport chain, but enhanced fatty acid biosynthesis. This suggests that in CR animals BAT may change its function from an energy consuming system to an energy reservoir system. Based on our findings, we conclude that WAT and BAT cooperate to use energy effectively via a differential response of mitochondrial function to CR. CI - Copyright (c) 2012 Elsevier Ireland Ltd. All rights reserved. FAU - Okita, Naoyuki AU - Okita N AD - Molecular Pathology & Metabolic Disease, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Tokyo, Japan. FAU - Hayashida, Yusuke AU - Hayashida Y FAU - Kojima, Yumiko AU - Kojima Y FAU - Fukushima, Mayumi AU - Fukushima M FAU - Yuguchi, Keiko AU - Yuguchi K FAU - Mikami, Kentaro AU - Mikami K FAU - Yamauchi, Akiko AU - Yamauchi A FAU - Watanabe, Kyoko AU - Watanabe K FAU - Noguchi, Mituru AU - Noguchi M FAU - Nakamura, Megumi AU - Nakamura M FAU - Toda, Toshifusa AU - Toda T FAU - Higami, Yoshikazu AU - Higami Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120310 PL - Ireland TA - Mech Ageing Dev JT - Mechanisms of ageing and development JID - 0347227 RN - 0 (Fatty Acids) RN - 0 (Proteome) SB - IM MH - Adipose Tissue, Brown/*metabolism MH - Adipose Tissue, White/*metabolism MH - Animals MH - *Caloric Restriction MH - Down-Regulation MH - Energy Metabolism/physiology MH - Fatty Acids/biosynthesis MH - Male MH - Mitochondria/metabolism MH - Proteome MH - Rats MH - Rats, Wistar EDAT- 2012/03/15 06:00 MHDA- 2012/10/02 06:00 CRDT- 2012/03/15 06:00 PHST- 2011/08/30 00:00 [received] PHST- 2011/12/14 00:00 [revised] PHST- 2012/02/22 00:00 [accepted] PHST- 2012/03/15 06:00 [entrez] PHST- 2012/03/15 06:00 [pubmed] PHST- 2012/10/02 06:00 [medline] AID - S0047-6374(12)00035-8 [pii] AID - 10.1016/j.mad.2012.02.003 [doi] PST - ppublish SO - Mech Ageing Dev. 2012 May;133(5):255-66. doi: 10.1016/j.mad.2012.02.003. Epub 2012 Mar 10.