Affordable Access

Access to the full text

Effects of curcumin on pain threshold and on the expression of nuclear factor κ B and CX3C receptor 1 after sciatic nerve chronic constrictive injury in rats

Authors
  • Cao, Hong1
  • Zheng, Jin-wei1
  • Li, Jia-jia1
  • Meng, Bo1
  • Li, Jun1
  • Ge, Ren-shan1
  • 1 The Second Affiliated Hospital of Wenzhou Medical College, Department of Anesthesiology, Wenzhou, Zhejiang Province, 325027, China , Wenzhou, Zhejiang Province (China)
Type
Published Article
Journal
Chinese Journal of Integrative Medicine
Publisher
Chinese Association of Traditional and Western Medicine
Publication Date
Jan 28, 2014
Volume
20
Issue
11
Pages
850–856
Identifiers
DOI: 10.1007/s11655-013-1549-9
Source
Springer Nature
Keywords
License
Yellow

Abstract

ObjectiveTo investigate the effects of curcumin on pain threshold and the expressions of nuclear factor κ B (NF-κ B) and CX3C chemokine receptor 1 (CX3CR1) in spinal cord and dorsal root ganglion (DRG) of the rats with sciatic nerve chronic constrictive injury.MethodsOne hundred and twenty male Sprague Dawley rats, weighing 220–250 g, were randomly divided into 4 groups. Sham surgery (sham) group: the sciatic nerves of rats were only made apart but not ligated; chronic constrictive injury (CCI) group: the sciatic nerves of rats were only ligated without any drug treatment; curcumin treated injury (Cur) model group: the rats were administrated with curcumin 100 mg/(kg·d) by intraperitoneal injection for 14 days after CCI; solvent control (SC) group: the rats were administrated with the solvent at the same dose for 14 days after CCI. Thermal withdrawal latency (TWL) and mechanical withdrawal threshold (MWT) of rats were respectively measured on pre-operative day 2 and postoperative day 1, 3, 5, 7, 10 and 14. The lumbar segment L4–5 of the spinal cord and the L4, L5 DRG was removed at post-operative day 3, 7 and 14. The change of nuclear factor κ B (NF-κ B) p65 expression was detected by Western blotting while the expression of CX3CR1 was determined by immunohistochemical staining.ResultsCompared with the sham group, the TWL and MWT of rats in the CCI group were significantly decreased on each post-operative day (P<0.01), which reached a nadir on the 3rd day after CCI, and the expressions of NF-κ B p65 and CX3CR1 were markedly increased in spinal cord dorsal horn and DRG. In the Cur group, the TWL of rats were significantly increased than those in the CCI group on post-operative day 7, 10 and 14 (P<0.05) and MWT increased than those in the CCI group on post-operative day 10 and 14 (P<0.05). In addition, the administration of curcumin significantly decreased the positive expressions of NF-κ B p65 and CX3CR1 in spinal cord and DRG (P<0.05).ConclusionOur study suggests that curcumin could ameliorate the CCI-induced neuropathic pain, probably through inhibiting CX3CR1 expression by the activation of NF-κ B p65 in spinal cord and DRG.

Report this publication

Statistics

Seen <100 times