Galanin and its receptor system promote the repair of injured sciatic nerves in diabetic rats.

Abstract:

:Various studies have reported that galanin can promote axonal regeneration of dorsal root ganglion neurons in vitro and inhibit neuropathic pain. However, little is known about its effects on diabetic peripheral neuropathy, and in vivo experimental data are lacking. We hypothesized that repeated applications of exogenous galanin over an extended time frame may also repair nerve damage in diabetic peripheral neuropathy, and relieve pain in vivo. We found that neuropathic pain occurred in streptozotocin-induced diabetic rats and was more severe after sciatic nerve pinch injury at 14 and 28 days than in diabetic sham-operated rats. Treatment with exogenous galanin alleviated the neuropathic pain and promoted sciatic nerve regeneration more effectively in diabetic rats than in non-diabetic rats after sciatic nerve pinch injury. This was accompanied by changes in the levels of endogenous galanin, and its receptors galanin receptor 1 and galanin receptor 2 in the dorsal root ganglia and the spinal dorsal horn when compared with nerve pinch normal rats. Our results show that application of exogenous galanin daily for 28 days can promote the regeneration of injured sciatic nerves, and alleviate neuropathic pain in diabetic rats.

journal_name

Neural Regen Res

authors

Xu XF,Zhang DD,Liao JC,Xiao L,Wang Q,Qiu W

doi

10.4103/1673-5374.191228

subject

Has Abstract

pub_date

2016-09-01 00:00:00

pages

1517-1526

issue

9

eissn

1673-5374

issn

1876-7958

pii

NRR-11-1517

journal_volume

11

pub_type

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