Therapeutic Effect of Nerve Growth Factor Thermosensitive  Gel on Sciatic Nerve Injury of Rats

Min JIANG; Wang-di SONG; Wen CHEN; Ya-ke GUO

doi:10.13422/j.cnki.syfjx.20190207

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Therapeutic Effect of Nerve Growth Factor Thermosensitive Gel on Sciatic Nerve Injury of Rats

Pharmacy and Processing | 更新时间：2021-02-09

- Therapeutic Effect of Nerve Growth Factor Thermosensitive Gel on Sciatic Nerve Injury of Rats
- Chinese Journal of Experimental Traditional Medical Formulae Vol. 25, Issue 3, Pages: 27-33(2019)
- 作者机构：
  
  1.石河子大学　药学院，新疆植物药资源利用教育部重点实验室，新疆　石河子　 832000
  2.石河子大学　医学院　第一附属医院，新疆　石河子　 832008
- 作者简介：
- 基金信息：
- DOI：10.13422/j.cnki.syfjx.20190207
  CLC： R22;R24;R28;C37;TS193
- Received：29 April 2018，
  
  Published Online：02 November 2018，
  
  Published：05 February 2019
- 稿件说明：
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Min JIANG, Wang-di SONG, Wen CHEN, et al. Therapeutic Effect of Nerve Growth Factor Thermosensitive Gel on Sciatic Nerve Injury of Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(3): 27-33.
DOI：

Min JIANG, Wang-di SONG, Wen CHEN, et al. Therapeutic Effect of Nerve Growth Factor Thermosensitive Gel on Sciatic Nerve Injury of Rats[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(3): 27-33. DOI： 10.13422/j.cnki.syfjx.20190207.

摘要

目的:

制备神经生长因子(NGF)温度敏感型原位凝胶，以大鼠坐骨神经损伤为模型，探讨NGF温敏凝胶对大鼠坐骨神经损伤的修复作用。

方法:

制备NGF温敏凝胶，利用星点设计-效应面法优化其处方。将50只大鼠随机分为正常组，模型组，NGF注射剂组(10 mg·L

-1

)，NGF低剂量温敏凝胶组(10 mg·L

-1

)和NGF高剂量温敏凝胶组(20 mg·L

-1

)，建立大鼠坐骨神经损伤模型；以大鼠行为学，坐骨神经功能指数(SFI)，撤回反射时间的测定实验，腓肠肌湿重比的测定以及组织形态学变化为指标，综合考察NGF温敏凝胶对损伤坐骨神经的影响。

结果:

处方优化后NGF温敏凝胶的胶凝温度35.2 ℃，符合注射用标准。术后4~8周，各时间点测得NGF高剂量温敏凝胶组大鼠的SFI和腓肠肌湿重比都显著高于模型组和NGF注射剂组，但其撤回反射时间显著低于模型组和NGF注射剂组，且作用呈剂量依赖性。由苏木精-伊红(HE)染色试验可知，NGF高剂量温敏凝胶组的大鼠坐骨神经损伤区再生神经纤维排列较模型组整齐、密集，而且连续性也较好。

结论:

NGF温敏凝胶能促进大鼠坐骨神经损伤的修复.

Abstract

Objective:

To prepare nerve growth factor(NGF) temperature sensitive

in situ

gel and investigate its therapeutic effect on sciatic nerve injury of rats.

Method:

NGF thermosensitive gel was prepared and its prescription was optimized by central composite design-response surface methodology.Fifty rats were randomly divided into the normal group

model group

NGF injection group(10 mg·L

-1

)

NGF low-dose(10 mg·L

-1

) and high-dose(20 mg·L

-1

) thermosensitive gel groups

and sciatic nerve injury model of rats was established.The effect of NGF thermosensitive gel on the injury of sciatic nerve were comprehensively examined by taking rat behavior

sciatic nerve function index(SFI)

time of withdrawal reflex

wet weight ratio of gastrocnemius muscle

and histomorphological changes as indicators.

Result:

The gelation temperature of NGF thermosensitive gel was 35.2 ℃ after the formulation being optimized

which was in line with the standard for injection.Four-eight weeks after operation

the SFI and wet weight ratio of gastrocnemius muscle in rats of NGF high-dose thermosensitive gel group were significantly higher than those in the model group and NGF injection group

but its time of withdrawal reflex was significantly lower than those in the model group and NGF injection group

and the effect was in a dose-dependent manner.Arrangement of regenerated nerve fibers in sciatic nerve injury area of rats from NGF high-dose thermosensitive gel group was more tidy

dense and continuous than that of the model group.

Conclusion:

NGF thermosensitive gel can promote repair of sciatic nerve injury in rats.

关键词

Keywords

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