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- W3031951214 abstract "Objective To investigate the effect of curcumin on the apoptosis in spinal cord and dorsal root ganglion neurons in a rat model of diabetic neuropathic pain (DNP) . Methods One hundred and eight male SD rats weighing 200-230 g were randomly divided into 4 groups ( n = 27 each): control group (group C), DNP group, solvent control group (group SC) and curcumin group (group Cur) . Diabetes was induced with intraperitoneal streptozocin 70 mg/kg. Successful induction of diabetes was defined as blood glucose ＞ 16.7 mmol/L. Curcumin and com oil 100 mg/kg (23 mg/ml) were given intraperitoneally once a day for 14 consecutive days starting from 14 days after administration of streptozocin in Cur and SC groups respectively. Mechanical paw withdrawal threshold (MWT) and thermal paw withdrawal latency (TWL) were measured 2 d before and 14 d after streptozocin injection and 3, 7 and 14 d after curcumin injection. The pain threshold measured at 14 d after administration of streptozocin decreased by more than 15% of the baseline in all the rats. The expression of caspase-3 and Bcl-2 in spinal cord and dorsal root ganglion was determined at 3, 7 and 14 d after curcumin injection by immuno-histochemistry and Western blot, and the neuronal apoptosis rate was determined by TUNEL. Results Compared with group C, MWT and Bcl-2 expression were significantly decreased, TWL was significantly shortened, the neurona lapoptosis rate and caspase-3 expression were significantly increased in DNP, SC and Cur groups ( P ＜ 0.05).Compared with group DNP, MWT and Bcl-2 expression were significantly increased, TWL was significantly prolonged, the neuronal apoptosis rate and caspase-3 expression were significantly decreased in Cur group ( P ＜0.05) . There was no significant difference in the parameters mentioned above between DNP and SC groups ( P ＞0.05). Conclusion Curcumin can attenuate DNP by inhibiting the apoptosis in spinal dorsal hom and dorsal root ganglion neurons in rats, and the inhibition of caspase-3 expression and increase in Bcl-2 expression are involved in the mechanism.Key words: Curcumin; Diabetic mellitus; Neuralgia; Apoptosis; Spinal cord; Ganglia,spinal" @default.
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- W3031951214 date "2011-04-20" @default.
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- W3031951214 title "Effect of curcumin on apoptosis in spinal cord and dorsal root ganglion neurons in a rat model of diabetic neuropathic pain" @default.
- W3031951214 doi "https://doi.org/10.3760/cma.j.issn.0254-1416.2011.04.013" @default.
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