食品科学 ›› 2010, Vol. 31 ›› Issue (19): 363-366.doi: 10.7506/spkx1002-6630-201019080

• 营养卫生 • 上一篇    下一篇

摄入反式脂肪对大鼠脂质代谢的影响

张 佳1,李 静1,*,邓泽元1,2,曹 君1,刘 蓉1,范亚苇1,胡蒋宁1   

  1. 1.南昌大学 食品科学与技术国家重点实验室
    2.南昌大学高等研究院
  • 收稿日期:2010-06-27 出版日期:2010-10-15 发布日期:2010-12-29
  • 通讯作者: 李 静 E-mail:dengzy28@yahoo.com.cn
  • 基金资助:

    江西省学术带头人计划项目(2008DD00900);教育部博士点基金项目(20070403002);
    国家自然科学基金项目(30972482)

Effect of Ingestion of Trans-Fatty Acids on Lipid Metabolism in Rats

ZHANG Jia1,LI Jing1,*,DENG Ze-yuan1,2,CAO Jun1,LIU Rong1,FAN Ya-wei1,HU Jiang-ning1   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China;
    2. Institute for Advanced Study of Nanchang University, Nanchang 330047, China
  • Received:2010-06-27 Online:2010-10-15 Published:2010-12-29
  • Contact: LI Jing E-mail:dengzy28@yahoo.com.cn

摘要:

人群跟踪调查表明,反式脂肪酸(trans fatty acids,TFA)增加冠心病危险及死亡率,可能主要通过影响血脂和炎症反应引起某些慢性疾病。实验在脂肪供能33%(目前中国居民膳食供能比)的情况下,通过 90d 的大鼠饲养实验探讨以TFA 为主的脂肪摄入对大鼠体内脂质代谢的影响。结果表明:与基础饲料对比,以TFA 为主的脂肪摄入显著升高大鼠血液甘油三酯(TG)含量,显著降低大鼠高密度脂蛋白胆固醇(HDL-C)含量,显著降低血浆肝素前脂蛋白脂酶(LPL)和肝脂酶(HL)的活力,显示TFA 可能改变大鼠脂肪酸代谢,引起甘油三酯代谢异常;TFA 同时显著降低大鼠血液血清总胆固醇(TC)和低密度脂蛋白胆固醇(LDL-C)含量,且对C 反应蛋白(CRP)没有影响,显著升高HDL-C/ LDL-C,表明以TFA 为主的脂肪摄入可能并不引起大鼠胆固醇代谢异常,这可能是由于除基础饲料外,植物油的摄入没有引入外源胆固醇,且大鼠本身缺乏胆固醇转移蛋白(CETP)。

关键词: 反式脂肪酸, 胆固醇代谢, C 反应蛋白, 脂酶

Abstract:

Epidemiological studies have demonstrated that trans-fatty acid (TFA) intake from diet increase the risk of some chronic diseases through blood lipid metabolism and inflammation pathway. Under the condition of oil added TFA with cholesterol-free (0% cholesterol) and 33% energy supplement from fat, the effect of TFA on lipid metabolism of rats was observed during 90 d feeding. The experimental diet with TFA significantly increased TG, lowered HDL-C, LPL and HL activity, suggesting that TFA could change fatty acid profile to induce the abnormity of TG metabolism. Meanwhile, TFA significantly depressed TC and LDL-C and improved HDL-C/LDL-C ratio, but did not exhibit effect on C-reactive protein (CRP) due to having no effect on the abnormity of cholesterol metabolism.

Key words: Trans fatty acids, cholesterol metabolism, C-reactive protein, lipase

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