畜牧兽医学报 ›› 2014, Vol. 45 ›› Issue (2): 313-319.doi: 10.11843/j.issn.0366-6964.2014.02.021

• 临床兽医 • 上一篇    下一篇

Enterobacter cloacae Z0206细菌富硒多糖对Ⅱ型糖尿病KKAy小鼠肾脏病变的影响

杨航仙,王凤芹, 周锡红,汪以真*   

  1. (浙江大学饲料科学研究所,农业部动物营养与饲料重点开放实验室,浙江省饲料及动物营养重点实验室,杭州 310029)
  • 收稿日期:2013-08-23 出版日期:2014-02-23 发布日期:2014-02-23
  • 通讯作者: 汪以真,教授,博士生导师,主要从事动物营养与免疫研究,E-mail: yzwang321@zju.edu.cn
  • 作者简介:杨航仙(1988-),女,浙江龙游人,硕士生,主要从事动物营养与饲料科学研究,E-mail: hang_xian@126.com
  • 基金资助:

    现代农业产业技术体系建设专项资金 (CARS-36)

Effect of Enterobacter cloacae Z0206 Enriched-selenium Polysaccharide on the Renal Disease of the Type Ⅱ Diabetic KKAy Mice

YANG Hang-xian,WANG Feng-qin,ZHOU Xi-hong,WANG Yi-zhen*   

  1. (Zhejiang Provincial Laboratory of Feed and Animal Nutrition,Key Laboratory of Animal Nutrition and Feed Science of Ministry of Agriculture,Institute of Food Science,Zhejiang University,Hangzhou 310029,China)
  • Received:2013-08-23 Online:2014-02-23 Published:2014-02-23

摘要:

以Ⅱ型糖尿病KKAy小鼠为动物模型,探讨Z0206细菌富硒多糖对KKAy小鼠肾脏病变的影响。选用6~8周龄KKAy雄性小鼠,预饲2周,按血糖高低,随机分为3组:模型组(Model)、Z0206富硒多糖组(CEPS)、Z0206纯化富硒多糖组(PEPS),每组8只。每天分别灌胃0.5 mL去离子水、10 mg·mL-1 CEPS和10 mg·mL-1PEPS,同时以8只7周龄的C57/BL小鼠作为正常对照组(Control),试验持续42 d。结果表明,与对照组相比,模型组小鼠谷胱甘肽过氧化酶(GSH-Px)活性和超氧化物歧化酶(SOD)活性显著下降(P<0.05),白细胞介素-1(IL-1)、白细胞介素-6(IL-6)、单核细胞趋化蛋白-1(MCP-1)、核因子-κB (NF-κB)、转化生长因子(TGF-β)、纤溶酶原激活物抑制物-1(PAI-1)、血小板衍生生长因子-β(PDGF-β)、Ⅳ型胶原(Col-Ⅳ)mRNA转录量及丙二醛(MDA)含量显著提高(P<0.05)。与模型组相比,富硒多糖组能够显著提高GSH-Px和SOD的活性(P<0.05),显著降低IL-1、IL-6、MCP-1、 NF-κB、 TGF-β、 PAI-1、 PDGF-β、Col-Ⅳ mRNA转录量及MDA含量(P<0.05),光镜和电镜下,系膜区基质增生明显减轻,细胞结构改善明显。试验结果表明,富硒多糖能够提高KKAy小鼠肾脏的抗氧化功能,有效缓解糖尿病引起的肾脏炎症及损伤。

Abstract:

This experiment was conducted to study the effect of the bacterial enriched-selenium polysaccharide enterobacter cloacaeZ0206 on the renal disease of the Type Ⅱ diabetic KKAy mice.Six to eight week-old male KKAy mice were allocated in diabetes group (Model),Z0206 bacterial enriched-selenium polysaccharide group (CEPS) and Z0206 purified enriched-selenium polysaccharide group (PEPS) based on the blood glucose concentration after two weeks pre-feeding,8 mice in each group.The groups received 0.5 mL distilled water,10 mg·mL-1 CEPS,10 mg·mL-1 PEPS respectively.Eight 7-week-old C57/BL mice were used as normal control group (Control).The feeding trial lasted for 42 days.Compared with the control group,the activity of Glutathione Peroxidase (GSH-Px) and Superoxide Dismutase (SOD) in Model group were significantly decreased (P<0.05),the mRNA transcription of interleukin-1 (IL-1),interleukin-6 (IL-6),monocyte chemotactic protein 1 (MCP-1),nuclear factor-κB (NF-κB),transforming growth factor-β (TGF-β),plasminogen activator inhibitor 1 (PAI-1),plateletderived growth factor β (PDGF-β) and Collagen Type Ⅳ (Col-Ⅳ) were significantly increased (P<0.05).The level of MDA were significantly increased (P<0.05).Compared with the Model group,the enriched-selenium polysaccharide groups resulted in significant repair effect,the activity of GSH-Px and SOD in both polysaccharide groups were significantly increased (P<0.05),the mRNA transcription of IL-1,IL-6,MCP-1,NF-κB,TGF-β,PAI-1,PDGF-β and Col-Ⅳ were significantly decreased (P<0.05),the level of MDA were significantly decreased (P<0.05),matrix proliferation was significantly reduced.It is suggested that the polysaccharide can enhance the antioxidant function of the Type Ⅱ diabetic KKAy mice and repair the damage caused by diabetes to it.

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