摘要
目的探讨苏木水提取物在心脏移植中的免疫抑制作用及其机制。方法以W istar大鼠为供者、SD大鼠为受者,建立异位(腹腔)心脏移植模型。96只SD大鼠随机分为4组,每组24只。对照组:术前给橄榄油(8m l/kg.d);A组:给环孢菌素A(5m g/kg.d);B组:给苏木水提取物(37.5g/kg.d);C组:给苏木水提取物(25g/kg.d)+半量环孢菌素A(2.5m g/kg.d)。术后观察移植心的存活时间,心肌组织学和超微结构改变,术后3d和7d用逆转录-聚合酶链反应(RT-PCR)检测移植心脏白细胞介素-2(IL-2)信使核糖核酸(mRNA)、白细胞介素-10(IL-10)mRNA的表达,用酶联免疫吸附测定法(EL ISA)检测血清IL-2和IL-10的含量。结果与对照组比较,A组、B组、C组移植心存活时间延长(P<0.01),淋巴细胞浸润和心肌坏死程度较对照组轻,心肌IL-2mRNA表达较对照组减弱(P<0.01),IL-10mRNA表达较对照组增强(P<0.01)。A组术后3d和7d,B组、C组术后3d血清IL-2水平较对照组明显降低(P<0.01),A组术后7d,B组术后3d血清IL-10较对照组增高(P<0.05)。结论苏木水提取物在心脏移植后具有免疫抑制作用,可引起T h1向T h2免疫偏移。
Objective To explore immunosuppressive effect and sappan L （WECSL） in heart transplantation of rats. Methods mechanism of watery extract of caesalppinia Wistar rats （donor） heart allografts were transplanted into the abdomen of SD rats （receptor）. Ninety-six SD rats were divided into four groups （24 rats in each group）. Control group： olive oil（8ml/kg·d） treated; group A： cyclosporine A （CsA,5ml/kg·d） treated; groupB： WECSL（37.5g/kg·d） treated; group C： WECSL（25g/kg·d） plus semidose of CsA（2.5mg/kg·d） treated. Median survival time of heart allografts and the histological changes of allografts were examined. Messenger ribonucleic acid （mRNA） of interleukin-2（IL-2）, interleukinf-10（IL-10） in the myocardium were determined by reverse transcription polymerase chain reaction （RT-PCR）, serum level of IL-2 and IL-10 were determined by enzyme-linked immunosorbent assay （ELISA） at 3, 7 days after surgery. Results Compared with control group, median survival time of heart allografts in group A, group B, group C was prolonged （P〈0. 01）, lymphocyte infiltration and myocyte necrosis were relieved, mRNA expression of IL-2 in allografts was lower, mRNA expression of IL-10 was higher （P〈0.01）. The serum levels of IL-2 in group A 3,7days after surgery and in group B, group C 3 days after surgery was lower than that in control group （P〈0.01）. The serum levels of IL-10 in group A 7days after surgery and in group B 3 days after surgery was higher than that in control group （P〈0. 05）. Conclusion Acute rejection of rat heart transplantation can be effectively suppressed by WECSL, Th1 to Th2 polarization induced by WECSL is observed.
出处
《中国胸心血管外科临床杂志》
CAS
2006年第4期255-259,共5页
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery
关键词
苏木水提取物
心脏移植
Th1/Th2免疫偏移
Watery extract of caesalppinia sappan L
Heart transplantation
Th1/Th2 polarization
