摘要
目的:研究普瑞巴林在泰素化疗所致大鼠神经病理性疼痛方面的治疗作用。方法:40只SD雄性大鼠随机分为正常对照组、普瑞巴林治疗组(30mg/kg,共16d,口服)、泰素治疗组(2mg/kg,隔日1次,共4次,腹腔给药)、低剂量普瑞巴林治疗组和高剂量普瑞巴林治疗组(泰素大鼠模型给予普瑞巴林10和30mg/kg,共16d,口服)共5组。给药第16天检测所有大鼠的机械性痛阈、热痛阈和冷痛阈,电镜检测大鼠坐骨神经。结果:与正常对照组相比,泰素能够产生机械性异常疼痛〔(32.5±3.7)%vs(7.5±3.1)%,P<0.01〕、机械性痛觉过敏〔(52.5±7.5)%vs(12.5±3.7)%,P<0.01〕、冷异常性疼痛〔(2.9±0.5)s vs(0.5±0.3)s,P<0.01〕以及坐骨神经损伤,不伴有热痛觉过敏〔(9.1±0.6)s vs(11.0±0.8)s,P>0.05〕。而口服普瑞巴林(30mg/kg)连续16d能有效的降低泰素导致的神经病理性疼痛,与泰素组相比,它能减轻机械性痛觉异常〔(12.5±3.7)%vs(32.5±3.7)%,P<0.01〕、机械性痛觉过敏〔(30.0±3.8)%vs(52.5±7.5)%,P<0.05〕、冷异常性疼痛〔(1.4±0.3)s vs(2.9±0.5)s,P<0.05〕以及部分减轻坐骨神经损伤。结论:普瑞巴林能有效的减轻泰素化疗所致的神经病理性疼痛,可能是一种潜在有效的治疗化疗药物神经毒性的药物。
OBJECTIVE:To study the potential role of pregabalin in taxol-induced neuropathic pain in rats. METHODS: Forty male SD rats were randomly divided into five groups:normel control,pregabalin group (30 mg/kg p. o. ) for 16 days,taxol group (2 mg/kg i. p. for 4 alternate days),and pregabalin followed by taxol for 16 days (10 and 30 mg/kg p. o. ). On day 16, mechanical threshold, heat threshold, cold allodynia were examined, and sciatic nerve was analyzed by electron microscope. RESULTS: Taxol could arouse mechanical allodynia [( 32.5±3.7) % vs (7.5 ±3. 1)%, P〈0. 019, mechanical hyperalgesia [(52.5±7.5)% vs (12.5±3.7)%,P〈0.01],cold allodynia [(2. 9±0. 5) s vs (0.5±0.3)s, P〈0. 01] ,and sciatic nerve impairment,without thermo hyperalgesia [(9.1±0.6) s vs (11.0±0.8) s,P〉0.05]. However,oral administration of pregabalin (80 mg/kg) for consecutive 16 days significantly alleviated taxol-induced neuropathy by ameliorating mechanical allodynia (( 12. 5 ± 3. 7 )% vs ( 32. 5 ± 3. 7 )%, P 〈 0. 011, mechanical hyperalgesia (30.0±3.8) [ vs (52.5±7.5)%,P〈0.05] ,cold allodynia (1.4±0.3) s vs (2.9±0.5) s,P〈0.05] and impairment of sciatic nerve. CONCLUSION: Pregabalin attenuates the neuropathic pain induced by taxol,and it may be an effective candidate agent for chemotherapy induced neuropathic pain.
出处
《中华肿瘤防治杂志》
CAS
北大核心
2012年第16期1201-1204,共4页
Chinese Journal of Cancer Prevention and Treatment
基金
国家自然科学基金(81172187)