NO-1886对过氧化体增殖物激活型受体、脂蛋白脂肪酶和肿瘤坏死因子α基因表达的影响
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日本大制药厂新药研究基金(2001828);;湖南省教育厅课题(JY01C193)资助


Effects of NO-1886 on Expression of Peroxisome Proliferator-Activated Receptor, Lipoprotein Lipase and Tumor Necrosis Factor-α
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    摘要:

    为了探讨脂蛋白脂肪酶活化剂NO 1886对高脂高糖饮食喂养贵州小香猪过氧化物体增殖物激活型受体、脂蛋白脂肪酶及肿瘤坏死因子α表达的影响,选择雄性贵州小香猪15头,随机分为3组。正常对照组喂普通饲料;高脂高糖组喂高脂高蔗糖饲料;治疗组喂高脂高蔗糖饲料4个月后加1%NO 1886治疗。8个月后处死动物,采用Trizol提取组织总RNA ,逆转录聚合酶链反应检测过氧化体增殖物激活型受体、脂蛋白脂肪酶及肿瘤坏死因子αmRNA的表达。结果发现,正常对照组肌肉组织和肝脏过氧化体增殖物激活型受体α的表达较低。高脂高糖组肌肉组织和肝脏过氧化体增殖物激活型受体α的表达增强,NO 1886使高脂高糖喂养增强肌肉组织和肝脏过氧化体增殖物激活型受体α表达的作用减弱;在脂肪组织,治疗组脂蛋白脂肪酶的表达水平最高,分别比正常对照组和高脂高糖组高2 7%和2 0 % ;NO 1886抑制高脂高糖喂养小香猪脂肪组织肿瘤坏死因子α的表达。结果提示,NO 1886能促进小香猪脂肪组织脂蛋白脂肪酶的表达,显著抑制脂肪组织肿瘤坏死因子α基因表达,高调脂肪组织过氧化体增殖物激活型受体γ,减弱肝脏和肌肉过氧化体增殖物激活型受体α的表达,是NO 1886有效降低血浆游离脂肪酸和肿瘤坏死因子α水平可能的机制。

    Abstract:

    Aim To investigate the role of lipoprotein lipase ( LPL) activator NO-1886 on the mRNA expression of peroxisome proliferator-activated receptors (PPAR), LPL and tumor necrosis factor-α (TNF-α) in Guizhou minipigs fed with high-fat and high-sucrose. Methods Guizhou minipigs were randomized in to three groups: control group, high-fat high-sucrose group, high-fat high-sucrose and NO-1886 treated group (1% NO-1886 supplemented into the diet after 4 months). Reverse transcription-polymerase chain reaction (RT-PCR) analysis of PPAR, LPL and TNF-α RNA is extracted from frozen tissues, and reverse transcription-polymerase chain reaction (RT-PCR) is performed. Results The high-fat and high-sucrose diet increased the levels of mRNA expression of PPAR α in liver and muscle and the levels of mRNA expression of TNF-α in fat while decreased the levels of mRNA expression of fat PPAR α. NO-1886 improves the glucose metabolism probably through stimulating PPAR α and LPL expression. NO-1886 reduced the mRNA expression of fat TNF-α, decreased the mRNA expression of PPAR α in muscle and liver. Conclusions NO-1886 may stimulate PPAR γ and LPL expression, reduce the mRNA expression of TNF-α and PPAR α, which would account for an important role of NO-1886 in preventing atherosclerosis and lowing the blood sugar.

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廉馨,席守民,张弛,唐朝克,尹卫东. NO-1886对过氧化体增殖物激活型受体、脂蛋白脂肪酶和肿瘤坏死因子α基因表达的影响[J].中国动脉硬化杂志,2004,12(4):387~391.

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  • 收稿日期:2003-10-22
  • 最后修改日期:2004-03-18
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