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Exercise Affects Blood Glucose Levels and Tissue Chromium Distribution in High-Fat Diet-Fed C57BL6 Mice
Molecules ( IF 4.6 ) Pub Date : 2020-04-03 , DOI: 10.3390/molecules25071658
Geng-Ruei Chang , Po-Hsun Hou , Wen-Kai Chen , Chien-Teng Lin , Hsiao-Pei Tsai , Frank Chiahung Mao

Obesity is commonly associated with hyperglycemia and type 2 diabetes and negatively affects chromium accumulation in tissues. Exercise prevents and controls obesity and type 2 diabetes. However, little information is available regarding chromium changes for regulating glucose homeostasis in high-fat diet (HFD)-fed animals/humans who exercise. Therefore, this study explored the effects of exercise and whether it alters chromium distribution in obese mice. Male C57BL6/J mice aged 4 weeks were randomly divided into two groups and fed either an HFD or standard diet (SD). Each group was subgrouped into two additional groups in which one subgroup was exposed to treadmill exercise for 12 weeks and the other comprised control mice. HFD-fed mice that exercised exhibited significant lower body weight gain, food/energy intake, daily food efficiency, and serum leptin and insulin levels than did HFD-fed control mice. Moreover, exercise reduced fasting glucose and enhanced insulin sensitivity and pancreatic β-cell function, as determined by homeostasis model assessment (HOMA)-insulin resistance and HOMA-β indices, respectively. Exercise also resulted in markedly higher chromium levels within the muscle, liver, fat tissues, and kidney but lower chromium levels in the bone and bloodstream in obese mice than in control mice. However, these changes were not noteworthy in SD-fed mice that exercised. Thus, exercise prevents and controls HFD-induced obesity and may modulate chromium distribution in insulin target tissues.

中文翻译:

运动影响高脂饮食喂养的 C57BL6 小鼠的血糖水平和组织铬分布

肥胖通常与高血糖症和 2 型糖尿病有关,并对组织中的铬积累产生负面影响。运动可以预防和控制肥胖和 2 型糖尿病。然而,关于在高脂肪饮食 (HFD) 喂养的运动动物/人类中调节葡萄糖稳态的铬变化的信息很少。因此,本研究探讨了运动的影响以及它是否会改变肥胖小鼠的铬分布。4 周龄的雄性 C57BL6/J 小鼠随机分为两组,喂食 HFD 或标准饮食 (SD)。每组又分为两组,其中一组进行跑步机运动 12 周,另一组包括对照小鼠。运动的 HFD 喂养小鼠表现出显着较低的体重增加、食物/能量摄入、每日食物效率、和血清瘦素和胰岛素水平高于喂食 HFD 的对照小鼠。此外,根据体内平衡模型评估 (HOMA)-胰岛素抵抗和 HOMA-β 指数分别确定,运动可降低空腹血糖并增强胰岛素敏感性和胰腺 β 细胞功能。运动还导致肥胖小鼠肌肉、肝脏、脂肪组织和肾脏中的铬含量显着升高,但骨骼和血液中的铬含量低于对照组小鼠。然而,这些变化在运动的 SD 喂养小鼠中并不值得注意。因此,运动可以预防和控制 HFD 诱导的肥胖,并可能调节胰岛素靶组织中的铬分布。分别由稳态模型评估 (HOMA)-胰岛素抵抗和 HOMA-β 指数确定。运动还导致肥胖小鼠肌肉、肝脏、脂肪组织和肾脏中的铬含量显着升高,但骨骼和血液中的铬含量低于对照组小鼠。然而,这些变化在运动的 SD 喂养小鼠中并不值得注意。因此,运动可以预防和控制 HFD 诱导的肥胖,并可能调节胰岛素靶组织中的铬分布。分别由稳态模型评估 (HOMA)-胰岛素抵抗和 HOMA-β 指数确定。运动还导致肥胖小鼠肌肉、肝脏、脂肪组织和肾脏中的铬含量显着升高,但骨骼和血液中的铬含量低于对照组小鼠。然而,这些变化在运动的 SD 喂养小鼠中并不值得注意。因此,运动可以预防和控制 HFD 诱导的肥胖,并可能调节胰岛素靶组织中的铬分布。这些变化在运动的 SD 喂养小鼠中并不显着。因此,运动可以预防和控制 HFD 诱导的肥胖,并可能调节胰岛素靶组织中的铬分布。这些变化在运动的 SD 喂养小鼠中并不显着。因此,运动可以预防和控制 HFD 诱导的肥胖,并可能调节胰岛素靶组织中的铬分布。
更新日期:2020-04-03
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