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中华妇幼临床医学杂志(电子版) ›› 2006, Vol. 02 ›› Issue (04) : 206 -209. doi: 10.3877/cma.j.issn.1673-5250.2006.04.108

论著

大剂量肌苷对新生鼠缺氧缺血性脑损伤的治疗作用研究
栾红, 高彬昌, 李琴   
  1. 青岛大学附属海慈医院儿科(青岛,266033)
    山东荣成市第二人民医院神经内科
  • 出版日期:2006-07-21

Study on the therapeutic effect of high dose inosine to hypoxi-schemic brain damage in neonatal rats

Hong LUAN, Bin-chang GAO, Qin LI   

  1. Department of Pediatrics, Affiliated Hiser Hospital of Medical College, Qingdao University.Qingdao, 266033, China
  • Published:2006-07-21
引用本文:

栾红, 高彬昌, 李琴. 大剂量肌苷对新生鼠缺氧缺血性脑损伤的治疗作用研究[J/OL]. 中华妇幼临床医学杂志(电子版), 2006, 02(04): 206-209.

Hong LUAN, Bin-chang GAO, Qin LI. Study on the therapeutic effect of high dose inosine to hypoxi-schemic brain damage in neonatal rats[J/OL]. Chinese Journal of Obstetrics & Gynecology and Pediatrics(Electronic Edition), 2006, 02(04): 206-209.

目的

通过建立新生鼠缺氧缺血性脑损伤(hypoxic-ischemic brain damage, HIBD)模型,探讨肌苷对新生鼠HIBD的治疗效果。

方法

将54只日龄为1周的新生鼠随机分为假手术组、对照组和肌苷组。造成新生鼠急性HIBD模型。肌苷组大鼠造模后立刻给予0.1%肌苷注射液(0.05 mg/g),每日2次。假手术组和对照组给予相同剂量生理盐水。定时取标本,测定脑组织中水、钙含量及脑细胞凋亡率。

结果

①随着时间延长,脑组织水含量逐渐增加,5 d达高峰,然后下降。与假手术组比较,对照组于3 d和5 d、肌苷组于5 d皆有显著增高(P<0.05);与同时间点对照组相比,肌苷脑组织水含量于3 d和5 d皆有明显降低(P<0.05)。②脑组织中钙的含量24 h最高,随着时间延长,逐渐下降,与假手术组比较,对照组于24 h,3 d和5 d,肌苷组于24 h和3 d皆有显著增高(P<0.05);与同时间点对照组相比,肌苷组脑组织钙含量于24 h,3 d和5 d皆有明显降低(P<0.05)。③随着时间延长,对照组和肌苷组脑细胞凋亡率逐渐增加(P< 0.05);与假手术组相比,对照组和肌苷组各时间点的凋亡率皆有明显增高(P<0.05);与同时间点对照组相比,肌苷组的凋亡率明显降低(P<0.05)。

结论

肌苷能显著减轻由缺氧缺血所导致的神经细胞损伤和破坏,保护脑组织。

Objective

To explore the therapeutic effect of high dose inosine to hypoxic-ischemic brain damage(HIBD)in neonatal rats; and provide some evidences for wide clinical usage.

Methods

54 neonatal rats aged 1 week were randomly divided into sham, control and inosine group.HIBD models were made.The rats in the inosine group began injecting 0.1 % inosine(0.05 mg/g), twice a day; and the rats in the sham and control group saline solution with the same dose.The samples were made at the given time; and the levels of water, calcium and cell apoptosis in brain were investigated.

Results

①The levels of wate at 3 d, 5 d in the control group, and at 5 d in the inosine group were higher than that in the sham group(P<0.05).As compared with the control group at the given time, the levels in the inosine group at 3 d and 5 d were all significantly decreased(P<0.05).② The contents of calcium in brain tissues peaked at 24 h, and then gradually decreased.The contents at 24 h, 3 d, 5 d in the control group and 24 h, 3 d in the inosine group were all significantly increased in comparison with the sham group(P<0.05).As compared with the control group at the given time, the contents at 24 h, 3 d, 5 d in the inosine group were all significantly decreased(P<0.05).③ The rates of brain cell apoptosis in the control and inosine group were all gradually increased(P<0.05).The rates in the control and inosine group at every given time were all significantly increased(P<0.05).The rates in the inosine group were all lower than that in the control group(P<0.05).

Conclusion

Inosine could remarkably protect cerebral tissue against HIBD.

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