PMID- 21368270 OWN - NLM STAT- MEDLINE DCOM- 20110916 LR - 20211020 IS - 1522-1490 (Electronic) IS - 0363-6119 (Print) IS - 0363-6119 (Linking) VI - 300 IP - 6 DP - 2011 Jun TI - High-fat diet offsets the long-lasting effects of running-wheel access on food intake and body weight in OLETF rats. PG - R1459-67 LID - 10.1152/ajpregu.00517.2010 [doi] AB - We have previously demonstrated that running-wheel access normalizes the food intake and body weight of Otsuka Long-Evens Tokushima Fatty (OLETF) rats. Following 6 wk of running-wheel access beginning at 8 wk of age, the body weight of OLETF rats remains reduced, demonstrating a lasting effect on their phenotype. In contrast, access to a high-fat diet exacerbates the hyperphagia and obesity of OLETF rats. To determine whether diet modulates the long-term effects of exercise, we examined the effects of high-fat diet on food intake and body weight in OLETF rats that had prior access to running wheels for 4 wk. We found that 4 wk of running exercise significantly decreased food intake and body weight of OLETF rats. Consistent with prior results, 4 wk of exercise also produced long-lasting effects on food intake and body weight in OLETF rats fed a regular chow. When running wheels were relocked, OLETF rats stabilized at lower levels of body weight than sedentary OLETF rats. However, access to a high-fat diet offset these effects. When OLETF rats were switched to a high-fat diet following wheel relocking, they significantly increased food intake and body weight, so that they reached levels similar to those of sedentary OLETF rats fed a high-fat diet. Gene expression determination of hypothalamic neuropeptides revealed changes that appeared to be appropriate responses to the effects of diet and running exercise. Together, these results demonstrate that high-fat diet modulates the long-lasting effects of exercise on food intake and body weight in OLETF rats. FAU - Chao, Pei-Ting AU - Chao PT AD - Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA. FAU - Terrillion, Chantelle E AU - Terrillion CE FAU - Moran, Timothy H AU - Moran TH FAU - Bi, Sheng AU - Bi S LA - eng GR - R01 DK074269-04S1/DK/NIDDK NIH HHS/United States GR - R01 DK074269/DK/NIDDK NIH HHS/United States GR - R01 DK074269-03/DK/NIDDK NIH HHS/United States GR - R01 DK074269-01A1/DK/NIDDK NIH HHS/United States GR - R01 DK074269-04/DK/NIDDK NIH HHS/United States GR - P30 DK079637/DK/NIDDK NIH HHS/United States GR - R01 DK074269-02/DK/NIDDK NIH HHS/United States GR - R01 DK074269-05/DK/NIDDK NIH HHS/United States GR - DK074269/DK/NIDDK NIH HHS/United States GR - DK557609/DK/NIDDK NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20110302 PL - United States TA - Am J Physiol Regul Integr Comp Physiol JT - American journal of physiology. Regulatory, integrative and comparative physiology JID - 100901230 RN - 0 (AGRP protein, rat) RN - 0 (Agouti-Related Protein) RN - 0 (Dietary Fats) RN - 0 (Leptin) RN - 66796-54-1 (Pro-Opiomelanocortin) RN - 9015-71-8 (Corticotropin-Releasing Hormone) SB - IM MH - Adipose Tissue/physiopathology MH - Agouti-Related Protein/metabolism MH - Animals MH - Body Weight/*drug effects/*physiology MH - Corticotropin-Releasing Hormone/metabolism MH - Diabetes Mellitus, Type 2/blood/*physiopathology MH - Dietary Fats/*pharmacology MH - Disease Models, Animal MH - Eating/*drug effects/*physiology MH - Glucose Intolerance/physiopathology MH - Hypothalamus/metabolism MH - Leptin/blood MH - Male MH - Physical Conditioning, Animal/*physiology MH - Pro-Opiomelanocortin/metabolism MH - Rats MH - Rats, Inbred OLETF MH - Time Factors PMC - PMC3119147 EDAT- 2011/03/04 06:00 MHDA- 2011/09/17 06:00 PMCR- 2012/06/01 CRDT- 2011/03/04 06:00 PHST- 2011/03/04 06:00 [entrez] PHST- 2011/03/04 06:00 [pubmed] PHST- 2011/09/17 06:00 [medline] PHST- 2012/06/01 00:00 [pmc-release] AID - ajpregu.00517.2010 [pii] AID - R-00517-2010 [pii] AID - 10.1152/ajpregu.00517.2010 [doi] PST - ppublish SO - Am J Physiol Regul Integr Comp Physiol. 2011 Jun;300(6):R1459-67. doi: 10.1152/ajpregu.00517.2010. Epub 2011 Mar 2.