缺锌及补锌对大鼠体内元素分布和血脂的影响
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湖南省教育厅基金(00C153)


Effect of Zinc Deficiency and Zinc Replenishment on the Distribution of Elements in Rats
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    摘要:

    为了解锌缺乏及补锌对大鼠体内元素分布和血脂的影响。将出生后断乳一周的SD大鼠随机分为缺锌组、配喂组、对照组、补锌组和高锌组五组,缺锌组、对照组和高锌组分别用缺锌饲料(锌含量<1mg/kg)、常锌饲料(锌含量为50 mg/kg)和高锌饲料(锌含量为150mg/kg)喂养8周,补锌组用缺锌饲料喂养三周后改用高锌饲料喂养五周,配喂组用常锌饲料喂养,给料量按缺锌组前一天实际进食量添加。8周后处死,用极谱法测定血清中锌、铜、铁和钙的含量,用原子吸收分光光度法测定肝、肾、脾和睾丸中锌、铜、铁和钙的含量,用酶法测定血清中血脂的含量。结果发现,缺锌使大鼠血清、肝脏、脾脏、肾和睾丸中锌和铁的含量显著降低,肾、脾脏中铜的含量下降,缺锌大鼠体内血清中甘油三酯、胆固醇、高密度脂蛋白和低密度脂蛋白的含量未见下降。说明锌缺乏不仅直接导致组织器官中锌含量降低,而且对其他元素在体内的代谢与分布产生影响。缺锌对大鼠体内血脂的影响不明显。

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    Aim The effect of zinc deficiency and zinc replenishment on the distribution of elements in rats. Methods SD rats were randomized into zinc-deficient diet (ZD) group, pair-fed (PF) group, zinc normal group (ZN), zinc supplemented (ZS) group and high zinc (HZ) group. ZD group, ZN group, and HZ group were fed up with zinc deficient dietary (content of zinc< 1 mg/kg), zinc-normal dietary (50 mg/kg) and high zinc dietary (150 mg/kg) for 8 weeks respectively. ZS group were fed with zinc deficient dietary for 3 weeks, then changed to be treated with high-zinc dietary for 5 weeks. PF group were fed with zinc normal dietary according to the actual quantity of ZD group at the former day. All of the rats were killed after 8 weeks. The concentration of Zn, Cu, Fe, and Ca in serum were measured with polarography and with atomic absorption spec-troscopy (AAS) in liver, kidney, spleen, and testicle. Results The concentration of Zn, Fe in serum, liver, spleen, kidney, testiele and Cu in kidney, spleen decreased significantly owing to zinc deficiency, while the concentration of triglyceride, cholesterol, high density lipoprotein and low density lipoprotein in serum remained the same. Conclusions Zinc deficiency not only decreased zinc concentration in organism directly, but also affected the metabolism and distribution of elements. However, it didn' t affect serum significantly.

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袁秀琴,李东阳,陈淑兰,谢红卫,童玲玲.缺锌及补锌对大鼠体内元素分布和血脂的影响[J].中国动脉硬化杂志,2003,11(7):606~608.

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  • 收稿日期:2003-12-01
  • 最后修改日期:2003-12-20
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