中国神经再生研究(英文版) ›› 2015, Vol. 10 ›› Issue (1): 124-127.doi: 10.4103/1673-5374.150719

• 原著:周围神经损伤修复保护与再生 • 上一篇    下一篇

细菌黑色素可促进大鼠损伤坐骨神经的恢复

  

  • 收稿日期:2014-12-16 出版日期:2015-01-15 发布日期:2015-01-15

Bacterial melanin promotes recovery after sciatic nerve injury in rats

Olga. V. Gevorkyan 1, Irina B. Meliksetyan 1, Tigran R. Petrosyan 2, *, Anichka S. Hovsepyan 3   

  1. 1 Institute of Physiology, National Academy of Sciences of Armenia, Orbeli str. 22, Yerevan, Armenia
    2 Department of Kinesiology, Armenian State Institute of Physical Culture, Alex Manukyan 11, Yerevan, Armenia
    3 Scientific and Production Center “Armbiotechnology”, National Academy of Sciences of Armenia, Yerevan, Armenia
  • Received:2014-12-16 Online:2015-01-15 Published:2015-01-15
  • Contact: Tigran R. Petrosyan, tigpetrosyan@mail.ru.

摘要:

已有研究证实,来源于苏云金芽胞杆菌突变株的细菌黑色素对中枢神经系统损伤的恢复有促进作用。我们假设细菌黑色素能促进损伤周围神经结构和功能的恢复。实验给予坐骨神经横断损伤大鼠肌肉注射细菌黑色素,并设未给予细菌黑色素肌肉注射的坐骨神经损伤大鼠为对照。行为学试验结果显示,注射细菌黑色素大鼠的操作式条件反射恢复时间明显较对照组短,平衡运动功能明显优于对照组。组织形态学检测发现,注射细菌黑色素可促进大鼠损伤坐骨神经轴突再生。说明细菌黑色素对损伤坐骨神经有神经保护作用,有助于肢体运动功能的恢复,可用于周围神经损伤后的恢复性治疗。

关键词: 神经再生, 周围神经损伤, 坐骨神经损伤, 细菌黑色素, 运动功能, 组织形态学, 行为学

Abstract:

Bacterial melanin, obtained from the mutant strain of Bacillus Thuringiensis, has been shown to promote recovery after central nervous system injury. It is hypothesized, in this study, that bacterial melanin can promote structural and functional recovery after peripheral nerve injury. Rats subjected to sciatic nerve transection were intramuscularly administered bacterial melanin. The sciatic nerve transected rats that did not receive intramuscular administration of bacterial melanin served as controls. Behavior tests showed that compared to control rats, the time taken for instrumental conditioned reflex recovery was significantly shorter and the ability to keep the balance on the rotating bar was significantly better in bacterial melanin-treated rats. Histomorphological tests showed that bacterial melanin promoted axon regeneration after sciatic nerve injury. These findings suggest that bacterial melanin exhibits neuroprotective effects on injured sciatic nerve, contributes to limb motor function recovery, and therefore can be used for rehabilitation treatment of peripheral nerve injury. 

Key words: nerve regeneration, peripheral nerve injury, sciatic nerve injury, bacterial melanin, motor function, histomorphology, behaviors, neural regeneration