›› 2014, Vol. 41 ›› Issue (12): 40-44.

• 生物技术 • 上一篇    下一篇

牡蛎粗多糖对免疫应激大鼠PPARγ mRNA 表达水平的影响

许翔宇, 张儒雅, 岳刚, 黄志坚   

  1. 福建农林大学动物科学学院, 福建省动物药物工程实验室, 福建福州 350002
  • 收稿日期:2014-07-14 出版日期:2014-12-20 发布日期:2014-12-25
  • 通讯作者: 黄志坚 E-mail:huangzj1999@sina.com
  • 作者简介:许翔宇(1993-),男,浙江人,学士,研究方向:动物医学.
  • 基金资助:
    国家级"大学生创新创业训练计划"项目(201310389019).

Effects of Oyster Crude Polysaccharides on Rats PPARγ mRNA Expression after Immunological Stress

XU Xiang-yu, ZHANG Ru-ya, YUE Gang, HUANG Zhi-jian   

  1. Engineering Laboratory of Animal Pharmaceuticals of Fujian Province, College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
  • Received:2014-07-14 Online:2014-12-20 Published:2014-12-25

摘要: 本试验旨在研究牡蛎粗多糖对脂多糖(LPS)刺激大白鼠产生的PPARγ mRNA表达水平的影响.试验将30只大白鼠随机分为空白对照组、应激对照组及牡蛎粗多糖低、中、高剂量组.其空白对照组及应激对照组饲喂基础日粮,牡蛎粗多糖低、中、高剂量组为基础日粮分别添加0.3%、0.6%、0.9%的牡蛎粗多糖.试验期28 d,试验最后1 d,应激对照组、牡蛎粗多糖低、中、高剂量组腹腔注射100 μg/kg LPS,空白对照组注射等量的生理盐水,2 h后剖检,并利用荧光定量PCR法研究牡蛎粗多糖对免疫应激大鼠PPARγ mRNA相对表达量的变化.结果显示,牡蛎粗多糖高、中、低剂量组和空白对照组的肝脏、脾脏和淋巴结PPARγ mRNA的相对表达量均极显著低于应激对照组(P<0.01),但在肾上腺中空白对照组PPARγ mRNA相对表达量与应激对照组相比显著降低(P<0.05).在肾上腺和肝脏中,牡蛎粗多糖高、中剂量PPARγ mRNA相对表达量无显著差异(P>0.05),在脾脏中二者差异显著(P<0.05),淋巴结中二者差异极显著(P<0.01).结果表明添加牡蛎粗多糖的基础日粮可以缓解LPS所引起的大白鼠免疫应激,且添加量为0.3%~0.6%时效果较好.

关键词: 牡蛎粗多糖; 免疫应激; PPARγ mRNA

Abstract: This experiment was aimed to study whether oyster crude polysaccharides could relieve the immune stress stimulated by LPS.Test randomly divided 30 rats into blank control group, stress control group, oyster crude polysaccharides low, medium and high dose groups.Blank control group and stress control group were fed with based diet, oyster crude polysaccharides low, medium and high dose groups were fed with based diet with 0.3%, 0.6% and 0.9% oyster crude polysaccharides.Test lasted for 28 d, the stress control group and oyster crude polysaccharides low, medium and high dose groups were intraperitoneal injected with 100 μg/kg LPS, blank control group with the same amount of saline injection, 2 h later, autopsied the rats and used relative fluorescence quantitative PCR to study the changes of the relative expression quantity of PPARγ mRNA which oyster crude polysaccharides acted on the immune stress rats.The results showed that in oyster crude polysaccharides high, medium, low dose groups and blank control group, the relative expression quantities of PPARγ mRNA in liver, spleen and lymph nodes were extremely significantly lower than that of stress control group (P<0.01), but in adrenal gland, the relative expression quantities of PPARγ mRNA of blank control group significantly decreased compared with stress control group (P<0.05).In adrenal gland and liver, there was no significant difference between oyster crude polysaccharides high and medium dose groups(P>0.05);but in spleen, there was significantly different between those two groups(P<0.05);in lymph nodes, there was extremely significantly different between those two groups(P<0.01).Adding oyster crude polysaccharides into the based diet could relieve the immunological stress from LPS, and the ease effect was better when adding amount was within the range of 0.3% to 0.6%.

Key words: oyster crude polysaccharides; immunological stress; PPARγ mRNA

中图分类号: