目的研究三子排痰汤联合氨溴索(Ambroxol)对哮喘大鼠气道黏液高分泌的影响作用。方法 40只SD大鼠按随机数字表法分为5组:空白组、哮喘组、三子排痰汤组(中药组)、氨溴索组(西药组)、三子排痰汤联合氨溴索组(中西结合组),每组8只。采用...目的研究三子排痰汤联合氨溴索(Ambroxol)对哮喘大鼠气道黏液高分泌的影响作用。方法 40只SD大鼠按随机数字表法分为5组:空白组、哮喘组、三子排痰汤组(中药组)、氨溴索组(西药组)、三子排痰汤联合氨溴索组(中西结合组),每组8只。采用卵清白蛋白(OVA)复制大鼠哮喘模型,于实验第42、56d对大鼠进行形态学评分;采用苏木素-伊红(HE)染色观察气道炎症;免疫组化法检测肺组织黏蛋白(MUC5AC)表达;酶联免疫法(EILSA)测定血中白细胞介素13(IL-13)含量;过碘酸雪夫氏(PAS)染色法检测气道杯状细胞增生。结果所有药物干预组的形态学评分与气道炎症均较哮喘组明显减轻;哮喘组肺组织MUC5AC表达量高于空白组(0.530±0.035 vs 0.132±0.020,P<0.05),中西结合组、中药组、西药组MUC5AC表达量均低于哮喘组(P<0.05),且中西结合组与中药组、西药组的差异均有统计学意义(P<0.05);中西结合组、中药组和西药组血中IL-13含量均较哮喘组明显减少(42.41±3.15、46.31±3.07、43.05±2.70 vs 51.65±4.07,P<0.05),且中西结合组与中药组的差异有统计学意义(P<0.05),而与西药组差异无统计学意义;中西结合组和中药组、西药组气道杯状细胞增生面积均较哮喘组明显减少(41.21±2.88、48.10±3.44、51.06±3.51 vs 63.25±5.02,P<0.05),且中西结合组与中药组、西药组的差异均有统计学意义(P<0.05)。结论三子排痰汤联合氨溴索能抑制哮喘大鼠气道黏液的过度分泌,其机制可能是通过调节IL-13和杯状细胞实现的,而且其疗效优于单纯的中药或西药治疗。展开更多
AIM:The interaction of mucosal addressin cell adhesion molecule 1 (MAdCAM-1) with integrin α4β7 mediates lymphocyte recruitment into mucosa-associated lymphoid tissue (MALT).Nodular gastritis is characterized by a u...AIM:The interaction of mucosal addressin cell adhesion molecule 1 (MAdCAM-1) with integrin α4β7 mediates lymphocyte recruitment into mucosa-associated lymphoid tissue (MALT).Nodular gastritis is characterized by a unique military pattern on endoscopy representing increased numbers of lymphoid follicles with germinal center,strongly associated with H pylori infection.The purpose of this study was to address the implication of the MAdCAM-1/integrin β7 pathway in NG. METHODS:We studied 17 patients with NG and H pylori infection and 19 H pylori-positive and 14 H pylori-negative controls.A biopsy sample was taken from the antrum and snap-frozen for immunohistochemical analysis of MAdCAM- 1 and integrin β7.In simultaneous viewing of serial sections, the percentage of MAdCAM-1-positive to von Willebrand factor-positive vessels was calculated.We also performed immunostaining with anti-CD20,CD4,CD8 and CD68 antibodies to determine the lymphocyte subsets co- expressing integrin β7. RESULTS:Vascular endothelial MAdCAM-1 expression was more enhanced in gastric mucosa with than without H pylori infection.Of note,the percentages of MAdCAM-1-positive vessels were significantly higher in the lamina propria of NG patients than in H pylori-positive controls.Strong expression of MAdCAM-1 was identified adjacent to lymphoid follicles and dense lymphoid aggregates.Integrin β7-expressing mononuclear cells,mainly composed of CD20 and CD4 lymphocytes,were associated with vessels lined with MAdCAM-1-expressing endothelium.CONCLUSION: Our results suggest that the MAdCAM一1/ integrin a4p7 homing system may participate in gastric inflammation in response to H py/o}i-infection and contributes to MALT formation, typically leading to the development of NG.展开更多
文摘目的研究三子排痰汤联合氨溴索(Ambroxol)对哮喘大鼠气道黏液高分泌的影响作用。方法 40只SD大鼠按随机数字表法分为5组:空白组、哮喘组、三子排痰汤组(中药组)、氨溴索组(西药组)、三子排痰汤联合氨溴索组(中西结合组),每组8只。采用卵清白蛋白(OVA)复制大鼠哮喘模型,于实验第42、56d对大鼠进行形态学评分;采用苏木素-伊红(HE)染色观察气道炎症;免疫组化法检测肺组织黏蛋白(MUC5AC)表达;酶联免疫法(EILSA)测定血中白细胞介素13(IL-13)含量;过碘酸雪夫氏(PAS)染色法检测气道杯状细胞增生。结果所有药物干预组的形态学评分与气道炎症均较哮喘组明显减轻;哮喘组肺组织MUC5AC表达量高于空白组(0.530±0.035 vs 0.132±0.020,P<0.05),中西结合组、中药组、西药组MUC5AC表达量均低于哮喘组(P<0.05),且中西结合组与中药组、西药组的差异均有统计学意义(P<0.05);中西结合组、中药组和西药组血中IL-13含量均较哮喘组明显减少(42.41±3.15、46.31±3.07、43.05±2.70 vs 51.65±4.07,P<0.05),且中西结合组与中药组的差异有统计学意义(P<0.05),而与西药组差异无统计学意义;中西结合组和中药组、西药组气道杯状细胞增生面积均较哮喘组明显减少(41.21±2.88、48.10±3.44、51.06±3.51 vs 63.25±5.02,P<0.05),且中西结合组与中药组、西药组的差异均有统计学意义(P<0.05)。结论三子排痰汤联合氨溴索能抑制哮喘大鼠气道黏液的过度分泌,其机制可能是通过调节IL-13和杯状细胞实现的,而且其疗效优于单纯的中药或西药治疗。
文摘目的:探讨高频雾化吸入茶黄素乳酸-羟基乙酸共聚物(poly lactic-co-glycolic acid,PLGA)纳米粒对炎性气道黏蛋白5AC(mucoprotein 5AC,MUC5AC)的作用。方法:通过改良法制备茶黄素PLGA纳米粒,用粒径分析仪检测纳米粒平均粒径,并进行包封率和载药量测定及体外释放试验。将SD大鼠分为3组:对照组(A组)、香烟吸入组(B组)及干预组(C组)。RT-PCR检测各组黏蛋白5AC m RNA含量;酶联免疫吸附测定法(ELISA)观察MUC5AC蛋白表达的变化,并进行组化对比大鼠气道组织黏蛋白变化情况。结果:制备的茶黄素PLGA纳米粒性质稳定,测得其的平均粒径为(108.24±2.86)nm,适宜雾化吸入。香烟吸入组MUC5AC的蛋白表达明显升高,较对照组有显著性差异(P=0.000),而给予茶黄素PLGA纳米粒处理后,与香烟组比,指标明显下调(P=0.001)。MUC5AC m RNA表达的RT-PCR电泳结果也有类似结果。气道组织化学PAS染色也提示雾化吸入茶黄素PLGA纳米粒后,气道表面黏蛋白表达显著下降。结论:通过改良法制备茶黄素PLGA纳米粒性质稳定,大小均匀;经雾化途径吸入可发挥抑制炎性气道的黏蛋白5AC的高分泌作用,为茶黄素的开发应用提供了新的途径。
文摘AIM:The interaction of mucosal addressin cell adhesion molecule 1 (MAdCAM-1) with integrin α4β7 mediates lymphocyte recruitment into mucosa-associated lymphoid tissue (MALT).Nodular gastritis is characterized by a unique military pattern on endoscopy representing increased numbers of lymphoid follicles with germinal center,strongly associated with H pylori infection.The purpose of this study was to address the implication of the MAdCAM-1/integrin β7 pathway in NG. METHODS:We studied 17 patients with NG and H pylori infection and 19 H pylori-positive and 14 H pylori-negative controls.A biopsy sample was taken from the antrum and snap-frozen for immunohistochemical analysis of MAdCAM- 1 and integrin β7.In simultaneous viewing of serial sections, the percentage of MAdCAM-1-positive to von Willebrand factor-positive vessels was calculated.We also performed immunostaining with anti-CD20,CD4,CD8 and CD68 antibodies to determine the lymphocyte subsets co- expressing integrin β7. RESULTS:Vascular endothelial MAdCAM-1 expression was more enhanced in gastric mucosa with than without H pylori infection.Of note,the percentages of MAdCAM-1-positive vessels were significantly higher in the lamina propria of NG patients than in H pylori-positive controls.Strong expression of MAdCAM-1 was identified adjacent to lymphoid follicles and dense lymphoid aggregates.Integrin β7-expressing mononuclear cells,mainly composed of CD20 and CD4 lymphocytes,were associated with vessels lined with MAdCAM-1-expressing endothelium.CONCLUSION: Our results suggest that the MAdCAM一1/ integrin a4p7 homing system may participate in gastric inflammation in response to H py/o}i-infection and contributes to MALT formation, typically leading to the development of NG.
