目的比较颗粒溶素/白介素-12重组耻垢分枝杆菌(rMS)和微卡作为免疫治疗佐剂在鼠结核病治疗中的效果及机制。方法结核分枝杆菌H37Rv感染Balb/c小鼠4周后,分别用生理盐水、耻垢分枝杆菌(MS)、rMS、INH+PZA,rMS+INH+PZA、微卡+INH+PZA治疗6次,于第1次治疗后3个月处死小鼠,检测器官荷菌量、血清IL-12和IFN-γ分泌水平和肺、脾组织中颗粒溶素表达及观察小鼠肺、脾组织病理改变情况。结果rMS+INH+PZA器官荷菌量明显低于微卡+INH+PZA、rMS和INH+PZA药物组;血清IL-12水平rMS+INH+PZA和单纯rMS组明显高于微卡+INH+PZA和INH+PZA组;IFN-γ分泌水平rMS+INH+PZA、单纯rMS组和微卡+INH+PZA明显高于单纯的药物组;用免疫组化检测到单纯rMS组和rMS+INH+PZA组在肺脾组织中颗粒溶素的表达;rMS+INH+PZA、微卡+INH+PZA、单纯rMS组和INH+PZA组肺组织病变轻且局限,生理盐水组肺组织病理改变以渗出为主,病变广泛,正常肺泡结构被破坏。结论rMS和微卡对小鼠结核病有一定免疫治疗作用,rMS通过增强宿主...
Objective To evaluate immunotherapy efficacy and mechanisms of GranuLysin (GLS)/IL-12 M. smegmatis (rMS) and M. vaccae (vaccae) in murine model of M. tuberculosis infection. Methods Balb/c mice infected with M. tuberculosis were treated with normal saline (NS),M. smegmatis,GLS/IL-12 recombinant MS (rMS),rMS+PZA+INH,Vaccae+PZA+INH,and PZA+INH,respectively. The numbers of viable bacteria in the lungs and the spleens were counted. The levels of IL-12 and IFN-γ in serum were detected with ELISA. The expression ...