Effects of Valproic Acid on Axonal Regeneration and Recovery of Motor Function after Peripheral Nerve Injury in the Rat

Rao, Ting and Wu, Fei and Xing, Danmou and Peng, Zhengren and Ren, Dong and Feng, Wei and Chen, Yan and Zhao, Zhiming and Wang, Huan and Wang, Junweng and Kan, Wusheng and Zhang, Qingsong (2014) Effects of Valproic Acid on Axonal Regeneration and Recovery of Motor Function after Peripheral Nerve Injury in the Rat. The Archives of Bone and Joint Surgery, 2 (1). pp. 17-24.

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Abstract

Background: Valproic acid (VPA) is used to be an effective anti-epileptic drug and mood stabilizer. It has recently been demonstrated that VPA could promote neurite outgrowth, activate the extracellular signal regulated kinase pathway, and increases bcl-2 and growth cone-associated protein 43 levels in spinal cord. In the present research we demonstrate the effect of VPA on peripheral nerve regeneration and recovery of motor function following sciatic nerve transaction in rats. Methods: The rats in VPA group and control group were administered with valproic acid (300mg/kg) and sodium chloride respectively after operation. Each animal was observed sciatic nerve index (SFI) at 2-week intervals and studied electrophysiology at 4-week intervals for 12 weeks. Histological and morphometrical analyses were performed 12 weeks after operation. Using the digital image-analysis system, thickness of the myelin sheath was measured, and total numbers of regenerated axons were counted. Results: There was a significant difference in SFI, electrophysiological index (motor-nerve conduct velocity), and morphometrical results (regenerated axon number and thickness of myelin sheath) in nerve regeneration between the VPA group and controls ( P<0.05). Conclusions: The results demonstrated that VPA is able to enhance sciatic nerve regeneration in rats, suggesting the potential clinical application of VPA for the treatment of peripheral nerve injury in humans.

Item Type: Article
Subjects: WE Musculoskeletal system
WO Surgery
Divisions: Journals > Archives of Bone & Joint Surgery
Depositing User: abjs abjs
Date Deposited: 28 Sep 2017 16:13
Last Modified: 28 Sep 2017 16:13
URI: http://eprints.mums.ac.ir/id/eprint/6318

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