中文摘要
我国中草药资源丰富、疗效确切、毒副作用小,在神经再生的研究中日益受到关注。有研究表明周围神经损伤后应用银杏叶提取物可以促进神经再生。然而,实验主要是通过银杏叶提取物灌胃后观察周围神经损伤的修复,而其在损伤局部应用观察神经再生的研究尚无报道。银杏叶提取物的主要有效成分是银杏黄酮和银杏内酯,两者间促进周围神经再生的最佳配伍剂量尚无报道。本课题拟通过新型微流控芯片技术进行如下首创性研究:1)构建浓度筛选微流控芯片,在三维培养环境下高效、稳定、简便地筛选银杏黄酮和银杏内酯促进雪旺细胞增殖、分泌神经营养因子以及促进神经轴突再生的最佳配伍浓度。2)制备“银杏叶提取物复合壳聚糖神经鞘管”,并应用于周围神经损伤动物模型,从形态功能、电生理、分子生物学等多角度探讨其修复神经损伤的可行性。本课题将为今后研制出经济、有效、使用便捷的周围神经再生药物奠定理论与技术基础,而且我国银杏叶资源丰富,具有良好的应用前景。
英文摘要
There are rich herbal resources in our country. They are efficacy, toxic side effects, and in a growing concern in the study of nerve regeneration. Studies have shown that application of ginkgo biloba extract after peripheral nerve injury can promote nerve regeneration. However, peripheral nerve injury repair were usually observed after oral administration of Ginkgo biloba extract, the topical application of Ginkgo biloba extract in nerve injury is still not reported. The main active ingredients of Ginkgo biloba extract are Ginkgetin and Ginkgolide, the best compatibility between the two ingredients in promoting peripheral nerve regeneration is still not reported. We intend to carry out the following pioneering research by the new microfluidic chip technology: 1) Construct the concentration screening microfluidic chip, and in the three-dimensional culture environment efficient, stable and easily screen the best compatibility concentration of Ginkgetin and ginkgolides in promoting Schwann cell proliferation, secretion of neurotrophic factors and promote axon regeneration. 2) Construct the “Ginkgo biloba extract composite chitosan nerve sheath”, and assess the functional performance of the novel nerve sheath on animal peripheral nerve injury models in order to investigate its feasibility for peripheral nerve repair. Our study will be useful in developing economical and effective drugs for peripheral nerve regeneration. Ginkgo biloba leaves are resource-rich in our country and have a good application prospect.
结题摘要
我国中草药资源丰富、疗效确切、毒副作用小,在神经再生的研究中日益受到关注。银杏叶是我国的一味传统中药,是公认的治疗脑神经损害的有效药物,近几年许多学者进行了该药物对周围神经损伤影响的研究。银杏叶提取物的主要有效成分是银杏黄酮和银杏内酯,两者间促进周围神经再生的最佳配伍剂量尚无报道。本课题通过新型微流控芯片技术进行了如下研究:(1)构建浓度筛选微流控芯片,在三维培养环境下高效、稳定、简便地筛选银杏黄酮和银杏内酯促进雪旺细胞增殖、分泌神经营养因子以及促进神经轴突再生的最佳配伍浓度。(2)制备“银杏叶提取物复合壳聚糖神经鞘管”,并应用于周围神经损伤动物模型,从形态功能、电生理、分子生物学等多角度探讨其修复神经损伤的可行性。结果:(1)运用微流控芯片高通量筛选出 “银杏黄酮”和“银杏内酯”促进雪旺细胞增殖的最佳配伍浓度为银杏黄酮5.00 mg/mL—银杏内酯1.00 mg/mL。(2)运用细胞共培养微流控芯片筛选出“银杏黄酮”和“银杏内酯”促进脊髓前角运动神经元轴突再生的最佳配伍浓度为银杏黄酮5.14 mg/mL,银杏内酯1.14 mg/mL。此比例与促进雪旺细胞增殖的最佳配伍浓度相接近。(3)将“银杏叶提取物复合壳聚糖神经鞘管”应用于大鼠坐骨神经切割伤模型,能加速大鼠坐骨神经损伤后功能的恢复以及神经纤维的再生修复。本课题成果将为今后研制出经济、有效、使用便捷的周围神经再生药物奠定理论与技术基础,而且我国银杏叶资源丰富,具有良好的应用前景。
