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저항성 운동이 OLETF 쥐 시상하부 Leptin receptor (Ob-R), GLUT2 mRNA 및 골격근 GLUT4 mRNA 발현에 미치는 영향
Effects of Resistance Exercise Training on Leptin Receptor (Ob-R), GLUT2 mRNA of the Hypothalamus and GLUT4 mRNA Expression of the Skeletal Muscle in OLETF Rats
임은미 ( Eun-mi Lim ) , 박세환 ( Se-hwan Park ) , 윤진환 ( Jin-hwan Yoon )
운동과학 27권 4호 303-309(7pages)
UCI I410-ECN-0102-2019-600-001698014

PURPOSE: The hypothalamus plays a central role in integrating hormonal and nutritional signals from the periphery and modulating food intake, energy balance. However, obesity and type 2 diabetes cause dysfunction of hypothalamus. This study was to investigate the effects of 8 weeks resistance exercise training on leptin receptor, GLUT2 mRNA of the hypothalamus and skeletal muscle GLUT4 mRNA expression in OLETF rats. METHODS: Thirty male OLETF rats were randomly divided into three groups: LETO (CON, n=10), OLETF (OLETF+CON, n=10), OLETF+resistance exercise (OLETF+EXE, n=10). Exercise group conducted gradual ladder climbing exercise 3 days per week for 8 weeks. RESULTS: The results of this study was following; In the hypothalamus, leptin receptor (Ob-R) and GLUT2 mRNA expression were significantly increased in OLETF+EXE group compared with OLETF group (p<.05). Activation of AMPK was significantly decreased in OLETF+EXE group compared to OLETF group (p<.05). GLUT4 mRNA expression of skeletal muscle was significantly increased in OLETF+EXE group compared with OLETF group (p<.05), and HOMA-IR index also was significantly lower in OLETF+EXE group than OLETF group (p<.05). CONCLUSIONS: These results showed that 8 weeks resistance exercise training can improve leptin receptor mRNA expression and glucose sensing in hypothalamic. Also, these effects may contribute to energy homeostasis in peripheral such as skeletal muscle.

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