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The effect of lithium and lithium-loaded hyaluronic acid hydrogel applications on nerve regeneration and recovery of motor functions in peripheral nerve injury
Rendiconti Lincei. Scienze Fisiche e Naturali ( IF 1.810 ) Pub Date : 2020-06-21 , DOI: 10.1007/s12210-020-00919-5
Atacan Emre Kocman , Ilknur Dag , Tayfun Sengel , Erdem Soztutar , Mediha Canbek

Abstract

Functional recovery rates after peripheral nerve injury are quite poor. Studies have focused on the organization of axonal development and the alteration of the microenvironment of the regenerated nerve. It is a frequently used repair method to place a tube to the incision area with tubulization technique and to try increasing the effect by filling the tube with various substances. Hyaluronic acid is a natural polysaccharide, and since it is biodegradable, it makes an ideal biomaterial in peripheral nerve healing. Lithium chloride (LiCl), a Glycogen synthase kinase 3β (GSK3β) inhibitor, is also frequently used in the treatment of bipolar and depressive disorders, but it has strong neuroprotective and antiinflammatory effects. In this study, peripheral nerve injury was induced on the rat sciatic nerve and silicon conduit was placed to this area and the effects of application of LiCl (2.5, 5 and 15 mEq doses) and LiCl (15 mEq)-loaded hyaluronic acid hydrogel in the conduit on peripheral nerve regeneration and improvement of motor functions were investigated. Sciatic nerve index (SFI) was measured at 2nd, 4th, 8th, and 12th weeks for each animal. Histological, microscopic, and morphometrical analyzes were evaluated at the end of the experiment (12th weeks). Our results indicate that topically applied lithium has positive effect after peripheral nerve injury and especially 5 mEq LiCl can increase nerve regeneration in rats. Further studies are needed to discuss the morphological, molecular and mechanical potential of treatment application.

Graphical Abstract



中文翻译:

锂和载玻尿酸透明质酸水凝胶对周围神经损伤中神经再生和运动功能恢复的影响

摘要

周围神经损伤后的功能恢复率很差。研究集中于轴突发育的组织和再生神经微环境的改变。经常使用的修补方法是使用输卵管插管技术将管子置于切口区域,并尝试通过将各种物质填充到管子中来提高效果。透明质酸是一种天然多糖,由于它是可生物降解的,因此它是周围神经愈合的理想生物材料。糖原合酶激酶3β(GSK3β)抑制剂氯化锂(LiCl)也经常用于治疗躁郁症和抑郁症,但它具有强大的神经保护和抗炎作用。在这个研究中,在大鼠坐骨神经上诱发周围神经损伤,并将硅导管放置在该区域,并在外周导管中应用负载LiCl(2.5、5和15 mEq剂量)和负载LiCl(15 mEq)的透明质酸水凝胶的作用研究了神经再生和运动功能的改善。对每只动物在第2、4、8和12周测量坐骨神经指数(SFI)。在实验结束时(第12周)评估组织学,显微镜和形态计量学分析。我们的结果表明,局部应用锂对周围神经损伤有积极作用,尤其是5 mEq LiCl可以增强大鼠的神经再生。需要进一步研究以讨论治疗应用的形态,分子和机械潜力。研究了5和15 mEq剂量)和导管中加载LiCl(15 mEq)的透明质酸水凝胶对周围神经再生和运动功能的改善。对每只动物在第2、4、8和12周测量坐骨神经指数(SFI)。在实验结束时(第12周)评估组织学,显微镜和形态计量学分析。我们的结果表明,局部应用锂对周围神经损伤有积极作用,尤其是5 mEq LiCl可以增强大鼠神经再生。需要进一步研究以讨论治疗应用的形态,分子和机械潜力。研究了5和15 mEq剂量)和导管中加载LiCl(15 mEq)的透明质酸水凝胶对周围神经再生和运动功能的改善。对每只动物在第2、4、8和12周测量坐骨神经指数(SFI)。在实验结束时(第12周)评估组织学,显微镜和形态计量学分析。我们的结果表明,局部应用锂对周围神经损伤有积极作用,尤其是5 mEq LiCl可以增强大鼠神经再生。需要进一步研究以讨论治疗应用的形态,分子和机械潜力。对每只动物在第2、4、8和12周测量坐骨神经指数(SFI)。在实验结束时(第12周)评估组织学,显微镜和形态计量学分析。我们的结果表明,局部应用锂对周围神经损伤有积极作用,尤其是5 mEq LiCl可以增强大鼠神经再生。需要进一步研究以讨论治疗应用的形态,分子和机械潜力。对每只动物在第2、4、8和12周测量坐骨神经指数(SFI)。在实验结束时(第12周)评估组织学,显微镜和形态计量学分析。我们的结果表明,局部应用锂对周围神经损伤有积极作用,尤其是5 mEq LiCl可以增强大鼠神经再生。需要进一步研究以讨论治疗应用的形态,分子和机械潜力。

图形概要

更新日期:2020-06-21
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