二黄胶囊对实验性变态反应性脑脊髓炎模型大鼠急性期炎性反应和髓鞘修复的影响

摘要

目的 观察二黄胶囊对实验性变态反应性脑脊髓炎(experimental allergic encephalomyelitis,EAE)模型大鼠的保护和治疗作用.方法 通过用豚鼠脊髓匀浆和完全福氏佐剂1:1混合,制成乳剂作为免疫抗原,给Lewis大鼠4足垫内注射,建立大鼠EAE模型.观察二黄胶囊对EAE大鼠发病情况、神经组织病理变化及其血清髓鞘碱性蛋白(myelin basic protein,MBP)水平的影响.结果 二黄胶囊可显著改善EAE的发病程度,降低血清MBP的含量,与模型对照组比较其差异有统计学意义(P＜0.05);二黄各剂量组大鼠大脑的2个取材部位、小脑、脑干炎性反应细胞浸润灶计数均明显少于模型对照组,差异具有统计学意义(P＜0.01);二黄各剂量组大脑和小脑、脑干的髓鞘病变灶计数均明显少于模型对照组,与模型对照组比较,差异有统计学意义(P＜0.05).二黄中剂量组脊髓纵切标本、二黄大、中剂量组脊髓横切标本的髓鞘病变灶计数明显少于模型对照组,与模型对照组比较,差异有统计学意义(P＜0.05).结论 二黄胶囊对EAE大鼠的体质量、动物发病情况和脑、脊髓病理改变具有明显改善作用.%Objective To observe the protective and therapeutic effects of Erhuang capsule on experimental allergic encephalomyelitis(EAE) in rat model. Methods Lewis rats were immunized by the mixture of antigen emulsion which contained spinal cord homogenate of guinea pig and complete Freunds adjuvant mixed in the ratio of 1:1 to induce EAE. The effects of Erhuang capsule on the incidence, CNS histopathologic change, and serum myelin basic protein level were observed. Results Erhuang capsule could significantly ameliorate the clinical symptoms of EAE rats, reduce MBP content in serum, which were significantly different from those of the model group( P ＜ 0.05). The infiltration areas of inflammatory cells in the brain, cerebellum, brain stem in different dosage groups of Erhuang capsule were significantly fewer than those in the model group( P ＜ 0. 01 ). The demyelination areas in the brain, cerebellum and brain stem in different dosage groups of Erhuang capsule were also significantly fewer than that in model group (P ＜ 0. 05 ). The demyelination areas in the longitudinal sections of spinal cord in the medium dose group of Erhuang capsule were notably fewer than those in the model group. The demyelination areas in the transections of spinal cord in the high and medium dose groups were also significantly fewer than that in the model group(P ＜ 0.05). Conclusion Erhuang capsule could increase the body weight of EAE rats, reduce the incidence, and cold also significantly improve the histopathologic change of brain and spinal cord.