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高糖、不同类型高脂肪酸饮食对老年大鼠胰岛素抵抗及其血清脂联素的影响 被引量:2

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摘要 目的探讨高糖(HS)及不同类型高脂肪酸饮食对老年大鼠胰岛素抵抗(IR)及其血清脂联素水平的影响。方法用HS、高饱和脂肪酸(HSF)、高不饱和脂肪酸(HUF)饲料饲养大鼠24 w,连续抽血观察其体重、血糖、胰岛素、总胆固醇(TC)、甘油三酯(TG)、游离脂肪酸(FFA)、脂联素的变化,用正葡萄糖高胰岛素钳夹技术的葡萄糖输注率(GIR)评价IR。结果HS、HSF及HUF组大鼠均在第8周出现高胰岛素血症,12 w后GIR明显下降,以HSF下降最低。与同一时期正常对照组(NC)相比,HS组的大鼠分别在第8、12、16周时出现明显的高血糖、FFA和TG升高、血清脂联素水平降低(P<0.05,P<0.01),HSF和HUF组大鼠分别在第8、12周出现明显的高血糖、高FFA(P<0.05,P<0.01);在第20周后出现血清脂联素水平降低(P<0.05)。相关分析表明GIR降低为血清脂联素下降的独立危险因素。结论HS、HUF和HSF饮食长期摄入均可引起大鼠IR,其程度与饮食结构关系密切;血清脂联素的降低与IR有明显相关性。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2007年第21期2092-2095,共4页 Chinese Journal of Gerontology
作者简介 霍丽梅(1965-),女,硕士,主要从事内分泌与代谢研究。 通讯作者:宋光耀(1958-),男,教授,博士生导师,主要从事内分泌与代谢研究。
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