实验动物与比较医学 ›› 2016, Vol. 36 ›› Issue (2): 113-116.DOI: 10.3969/j.issn.1674-5817.2016.02.006

• 论著 • 上一篇    下一篇

奥曲肽对局灶性脑缺血的保护作用

丁雷, 王守宝, 宋鹤杰, 王晔   

  1. 上海儿童医学中心, 上海200127
  • 收稿日期:2015-12-10 出版日期:2016-04-25 发布日期:2016-04-25
  • 作者简介:丁 雷(1984-), 男, 实验师。E-mail: dingleipang@163.com
  • 基金资助:
    新华集团基金(12Xj2208)

Protective Effects of Octreotide on Cerebral Ischemia-reperfusion Injury in Rat

DING Lei, WANG Shou-bao, SONG He-jie, WANG Ye   

  1. Shanghai Children’s Medical Center, Shanghai 200127, China
  • Received:2015-12-10 Online:2016-04-25 Published:2016-04-25

摘要: 目的 观察奥曲肽(OCT)对局灶性缺血再灌注的保护作用并探讨相关作用机制。方法 80只SD大鼠随机分为4组,分别为假手术组,缺血再灌注组,OCT低剂量组及OCT高剂量组。在建立缺血再灌注模型各组分别使用安慰剂或OCT处理。参照Longa 5分制评分标准,分别在再灌注后的各观察时间段对大鼠进行神经功能评分; 脑组织标本分别采用氯化三苯基四氮唑(TTC)染色进行梗死面积检测,并采用试剂盒检测丙二醛(MDA)和过氧化物歧化酶(SOD)含量。结果 高剂量OCT能够显著改善脑缺血再灌注组大鼠的功能评分。OCT高剂量组动物梗死面积明显小于缺血再灌注组(P<0.05),MDA在OCT高剂量组的活性分别显著低于缺血再灌注组(P<0.05),而SOD的活性OCT组则显著升高(P<0.05)。结论 OCT在大鼠脑缺血再灌注具有保护作用,可能是通过影响脑部的氧化来产生作用的。

关键词: 奥曲肽(OCT), 缺血再灌注, 梗死面积, 过氧化物歧化酶(SOD), 丙二醛(MDA)

Abstract: Objective To observe the effect of octreotide (OTC) on cerebral ischemia-reperfusion injury in rats and explore the related mechanism. Methods Eighty SD rats were randomly divided into 4 groups which were sham group, middle cerebral artery occlusion (MACO) group, low dosage OCT (OCT-L) and high dosage OCT (OCT-H) group. All the rats were treated with OCT or placebo immediately after establishing the MACO model. Neurologic examination was clinically performed on each rat after reperfusion according to the Longa’s scoring method. The brain tissues were then harvested and tested with triphenyltetrazolium chloride staining. The malondialdehyde (MDA) and superoxide dismutase (SOD) activity of brain was also tested. Results Compared with MCAO group, OCT significantly alleviated neurological deficit, lessened infarct volume (P<0.05). The activity of MDA were decreased significantly in the OCT treated group than MACO group (P<0.05), but the SOD increased significantly in the OCT-H group than MACO group (P<0.05). Conclusion OCT treatment generated protective effect on cerebral ischemia-reperfusion injury in rats.

Key words: Octreotide(OCT), Ischemia-reperfusion injury, Infarction area, Superoxide dismutase(SOD), Malondialdehyde (MDA)

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