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( Wang Lok Lee ),( Jun Hyun Jeong ),( Hee Geun Park ),( Youn Gran Lee ),( Soon Mi Kwon ),( Ha Kyoung Jang ),( Jong Kui Jun ),( Myung Hwa Kim ),( Sang Ki Lee ),( Kwang Mu Lee ) 한국운동영양학회 2012 Physical Activity and Nutrition (Phys Act Nutr) Vol.16 No.3
This study investigated the effect of moderate exercise training on macrophage immunocompetence in high fat diet-induced obese mice. To determine the differential effects of exercise training and low fat diet on macrophage, C57BL/6 male mice (4 week old, n=32) were fed high-fat diet for 5 weeks to induce obese. The high fat-induced obese mice were then divided into four groups and differently treated by high/low fat diet and exercise training for a further 8 weeks; HHC (13 weeks high-fat diet), HHE (13 weeks high-fat diet with 8 weeks Exercise training) and HLC (5 weeks high-fat diet and 8 weeks low-fat diet), HLE (5 weeks high-fat diet and 8 weeks low-fat diet with exercise training). The exercise groups were performed on a motorized treadmill, running for 30-60 min/day at 10-22 m/min, 0% grade for 8wks. Body weight was significantly decreased for those with a low-fat diet and exercise training (HLE). Macrophage phagocytosis was significantly increased by low-fat diet and exercise training (HLE). The percentage of stimulation of NO release induced by LPS was higher in HLE than in other groups. The percentage of stimulation of IL-1β release induced by LPS was higher in HHE and HLE than in other groups. The percentage of stimulation of IFN-γ release induced by LPS was higher in HLE than in other groups. These findings suggest that moderate exercise and low-fat diet have beneficial effects on macrophage immunocompetence in high fat diet-induced obese mice.