Intrathecal injection of monocarboxylate transporter inhibitor α-cyano-4-hydroxy-cinnamate attenuates neuropathic pain in rats
10.3760/cma.j.issn.1674-6554.2014.10.002
- VernacularTitle:鞘内注射单羧酸转运蛋白抑制剂α-氰基-4-羟基肉桂酸缓解大鼠神经病理性疼痛
- Author:
Li XU
;
Jianhua HE
;
Yu SHEN
;
Linyu SHI
;
Lin LIU
;
Xiaoping GU
;
Zhengliang MA
- Publication Type:Journal Article
- Keywords:
Monocarboxylate transporter;
Inhibitor 4-CIN;
Neuropathic pain;
Spinal cord
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2014;23(10):869-871
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of intrathecal injection of α-cyano-4-hydroxy-cinnamate (4-CIN) in rats with neuropathic pain induced by chronic constriction injury of sciatic nerve (CCI).Methods Eighteen male SD rats were divided randomly into 3 groups(n=6):sham group (group S),CCI model group (group C0) and 4-CIN group (group C1).Group C0 and C1 were operated with the model of neuropathic pain induced by chronic constriction injury of sciatic nerve ; and group S were treated as sham operated rats.Two days after operation,group C1 received intrathecal injection of 100 μmol 4-CIN dissolved in 10％ DMSO 10 μl,while group C0 received intrathecal injection of 10％ DMSO 10 μl only.The paw withdrawal thermal latency(PWTL) and paw withdrawal mechanical threshold(PWMT) were tested 1 d before operation and 1 d,3 d,7 d,10 d,14 d after operation(T0-5).Results The basic values of PWMT and PWTL before operation showed no statistically significant differences among the three groups.On T1-5,the PWMT((11.71 ±2.81) g,(9.76± 1.00) g,(8.22± 1.33) g,(6.50± 1.48) g,(4.67± 1.03) g) and PWTL((11.36±2.18) s,(11.60±2.54) s,(8.54± 1.42) s,(7.59± 1.00) s,(6.88± 0.42) s) in group C0 were significantly lower than those in group S (P＜0.05).However,there were no significant differences between group S and C1 on T2-5(P＞0.05).Conclusion Intrathecal administration of 4-CIN can attenuate neuropathic pain in rats induced by CCI.
