五指山小型猪、西藏小型猪和巴马小型猪对外源性脂肪的敏感性观察
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浙江省科技厅实验动物科技计划项目(2012C37078),浙江中医药大学比较医学创新团队(XTD201301)。


Observation on the sensitivity of Wuzhishan, Tibetan and Bama minipigs to exogenous fats
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    摘要:

    目的 观察五指山小型猪、西藏小型猪和巴马小型猪对外源性脂肪的敏感性。方法 取雄性五指山小型猪、西藏小型猪和巴马小型猪各5只,分别采用静脉注射脂肪乳和饲喂高脂饲料,分别检测静脉注射脂肪乳后0.5、1、1.5、2、2.5、3 h和饲喂高脂饲料后12、24、36、48、60、72、84、120 h的血清胆固醇(TC)、低密度脂蛋白(LDL-C)、高密度脂蛋白(LDL-C)和甘油三酯(TG)水平,并计算曲线下面积变化ΔAUC值。结果 注射脂肪乳后3种小型猪甘油三酯(TG)均明显升高(P<0.01),在注射后0.5 h达到峰值,其升高程度和ΔAUC值高低依次为西藏小型猪>五指山小型猪>巴马小型猪,而TC、LDL-C和HDL-C则无明显变化(P>0.05);高脂饲料饲喂饮食诱导后3种小型猪TC、LDL-C、HDL-C和TG均明显升高(P<0.05,P<0.01),其中,五指山小型猪TC、LDL-C在饲喂后36 h、HDL-C在饲喂后48 h、TG在饲喂后24 h达到峰值,巴马小型猪和西藏小型猪TC、LDL-C、HDL-C在饲喂后48-60 h、TG在饲喂后36 h达到峰值,TC、LDL-C、HDL-C的ΔAUC值高低依次为五指山小型猪>巴马小型猪>西藏小型猪。结论 静脉注射脂肪乳3种小型猪对TG敏感,脂耐量值高低依次为西藏小型猪>五指山小型猪>巴马小型猪;高脂饲料饲喂对3种小型猪TC、LDL-C、HDL-C敏感,脂耐量值高低依次为五指山小型猪>巴马小型猪>西藏小型猪。

    Abstract:

    Objective To observe the sensitivity of Wuzhishan, Tibetan and Bama minipigs to exogenous fats. Methods A total of 15 male minipigs including 5 WZS minipigs, 5 Tibetan minipigs and 5 Bama minipigs, were used in this study. The minipigs were intravenously injected with fat emulsion and fed with high-fat diet, and the changes of serum total cholesterol (TC), low density lipoprotein (LDL-C), high density lipoprotein (HDL-C) and triglyceride (TG) levels were detected at 0.5 h, 1 h, 1.5 h, 2 h, 2.5 h and 3 h after intravenous injection of fat emulsion and at 3 h and 12 h, 24 h, 36 h, 48 h, 60 h, 72 h and 84 h after fed with high-fat diet, respectively, and calculated the changes of area under the curve (ΔAUC) values. Results The triglyceride (TG) in the three kinds minipigs were significantly increased (P<0.01), and reached a peak at 0.5 h after injection. The degree of elevation of ΔAUC values were different showing on increasing order: Tibetan minipig > Wuzhishan minipig > Bama minipig, while TC, LDL-C and HDL-C showed no significant changes (P>0.05). Moreover, TC, LDL-C, HDL-C and TG were significantly increased in the three stocks of minipigs induced by feeding with high-fat diet (P<0.05, P<0.01). Among them, the TC and LDL-C of Wuzhishan minipigs peaked at 36 h, HDL-C peaked at 48 h and TG peaked at 24 h after feeding, respectively. TC, LDL-C and HDL-C in the Bama minipigs and Tibetan minipigs peaked at 48-60 h and TG peaked at 36 h after feeding, and the ΔAUC values of TC, LDL-C and HDL-C were in an increasing order of Wuzhishan minipigs > Bama minipigs > Tibetan minipigs. Conclusions The three stocks of minipigs are sensitive to TG after intravenous injection of fat emulsion, and the lipid tolerance values are in an order of Tibetan minipig > Wuzhishan minipigs > Bama minipigs. Meanwhile, the three stocks of minipigs are also sensitive to TC, LDL-C and HDL-C after feeding with high-fat diet, and the lipid tolerance values are in an increasing order of Wuzhishan minipig > Bama minipigs > Tibetan minipigs.

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陈亮,潘永明,朱科燕,徐孝平,徐剑钦,陈民利.五指山小型猪、西藏小型猪和巴马小型猪对外源性脂肪的敏感性观察[J].中国比较医学杂志,2017,27(6):12~16.

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  • 最后修改日期:2016-12-27
  • 在线发布日期: 2017-07-08
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