运动干预对高脂喂养大鼠脂肪组织内脏脂肪素表达的影响

目的研究运动对高脂喂养大鼠内脏脂肪素（visfatin）基因表达的影响,以探讨visfatin与内脏型肥胖、代谢紊乱的联系。方法健康Wistar大鼠30只随机分为高脂饲料喂养组（HD）和正常饲料喂养组（ND）,18周后,HD组再随机分出一半大鼠为高脂喂养游泳组（HS）,HS组进行游泳运动6周后,测定大鼠体重、体长、血脂、空腹胰岛素和血糖等,用正糖-高胰岛素钳夹术检测部分大鼠胰岛素敏感性。RT-PCR检测各组大鼠肾周脂肪visfatin基因表达量。结果第18周时HD组大鼠Lee＇s指数、血糖、血脂明显高于ND组;第24周时,与HD组相比,HS组大鼠血脂、胰岛素敏感性等得到明显改善,HS组大鼠内脏脂肪量明显减少（P〈0.01）,同时HS组肾周脂肪内visfatin基因表达下降（P〈0.01）。结论visfatin的表达与内脏脂肪量、代谢紊乱有密切联系;运动可改善高脂喂养所导致的代谢紊乱和肥胖,其作用可能与visfatin的表达有关。

Effect of exercise on expression of visfatin of visceral fat in high-fat-diet-fed rats

Objective] To investigate the effect of exercise on rats fed with high fat and explore the relationship between visfatin and visceral obesity, metabolic dysregulation. Methods] 30 healthy Wistar rats were randomly assigned to normal-fat-diet group (ND) and high-fit-diet group (HD). 18 weeks later, half rats of the HD group were randomly assigned to high-diet swimming grou(HS). The HS group was arranged to swim for 6 weeks. Then body weight and body length of rats, blood lipid, fasting blood glucose and in...