目的:探讨黄芪注射液对肠系膜上动脉闭塞性(superior mesenteric artery occlusion,SMAO)休克脂质过氧化损伤的防治作用及其机制.方法:经腹分离兔肠系膜上动脉并夹闭2h后松夹,复制SMAO休克动物模型,并于松夹前、后各15min分别将黄芪注射...目的:探讨黄芪注射液对肠系膜上动脉闭塞性(superior mesenteric artery occlusion,SMAO)休克脂质过氧化损伤的防治作用及其机制.方法:经腹分离兔肠系膜上动脉并夹闭2h后松夹,复制SMAO休克动物模型,并于松夹前、后各15min分别将黄芪注射液1mL/kg以2倍的NS配制自耳缘iv,观察动物血压、血浆及红细胞膜丙二醛(MDA)、红细胞膜微黏度、红细胞超氧化物歧化酶(SOD)、血浆黄嘌呤氧化酶(XOD)、乳酸脱氢酶(LDH)及酸性磷酸酶(ACP)含量的变化;并进行小肠组织病理学检查.结果:与对照组比较,SMAO组血压和红细胞SOD降低(均P<0.01),红细胞膜微粘度、红细胞膜MDA以及血浆MDA,XOD,LDH和ACP的水平明显升高(均P<0.01),光镜下小肠病理损害明显.黄芪注射液治疗后上述各指标均较SMAO组明显改善(80.1±3.6 vs 39.4±5.2,4.63±0.57 vs 3.44±0.61,3.35±0.34 vs 4.09±0.38,0.23±0.02 vs 0.41±0.02,3.61±0.41 vs 4.32±0.92,71.4±13.1 vs 92.5±13.9,50.2±18.2 vs 105.5±37.0,37.0±11.8 vs 71.7±22.0,均P<0.01).结论:SMAO休克伴有氧自由基代谢紊乱,体内脂质过氧化过程加强.黄芪注射液通过抗脂质过氧化稳定细胞膜,改善红细胞膜微黏度,减轻组织损伤,延缓SMAO休克的发展.展开更多
AIM:To assess B1a cell expression in the rectal mucosa of ulcerative colitis (UC) patients in comparison with healthy controls.METHODS:Rectal mucosa biopsies were collected from 15 UC patients and 17 healthy controls....AIM:To assess B1a cell expression in the rectal mucosa of ulcerative colitis (UC) patients in comparison with healthy controls.METHODS:Rectal mucosa biopsies were collected from 15 UC patients and 17 healthy controls.CD5 + B cells were analysed by three colour flow cytometry from rectal mucosal samples after mechanical disaggregation by Medimachine.Immunohistochemical analysis of B and T lymphocytes was also performed.Correlations between,on the one hand,rectal B1a cell concentrations and,on the other,erythrocyte sedimentation rate and C-reactive protein levels and clinical,endoscopic and histological disease activity indices were evaluated.RESULTS:Rectal B-lymphocyte (CD19 + /CD45 +) rate and concentration were higher in UC patients compared with those in healthy controls (47.85% ± 3.12% vs 26.10% ± 3.40%,P=0.001 and 501 ± 91 cells/mm 2 vs 117 ± 18 cells/mm 2,P < 0.001);Rectal B1a cell density (CD5 + CD19 +) was higher in UC patients than in healthy controls (85 ± 15 cells/mm 2 vs 31 ± 6.7 cells/mm 2,P=0.009).Rectal B1a cell (CD5/CD19 +) rate correlated inversely with endoscopic classification (Rs=-0.637,P < 0.05).CONCLUSION:B1a lymphocytes seem to be involved in the pathogenesis of UC,however,the role they play in its early phases and in disease activity,have yet to be defined.展开更多
文摘目的:探讨黄芪注射液对肠系膜上动脉闭塞性(superior mesenteric artery occlusion,SMAO)休克脂质过氧化损伤的防治作用及其机制.方法:经腹分离兔肠系膜上动脉并夹闭2h后松夹,复制SMAO休克动物模型,并于松夹前、后各15min分别将黄芪注射液1mL/kg以2倍的NS配制自耳缘iv,观察动物血压、血浆及红细胞膜丙二醛(MDA)、红细胞膜微黏度、红细胞超氧化物歧化酶(SOD)、血浆黄嘌呤氧化酶(XOD)、乳酸脱氢酶(LDH)及酸性磷酸酶(ACP)含量的变化;并进行小肠组织病理学检查.结果:与对照组比较,SMAO组血压和红细胞SOD降低(均P<0.01),红细胞膜微粘度、红细胞膜MDA以及血浆MDA,XOD,LDH和ACP的水平明显升高(均P<0.01),光镜下小肠病理损害明显.黄芪注射液治疗后上述各指标均较SMAO组明显改善(80.1±3.6 vs 39.4±5.2,4.63±0.57 vs 3.44±0.61,3.35±0.34 vs 4.09±0.38,0.23±0.02 vs 0.41±0.02,3.61±0.41 vs 4.32±0.92,71.4±13.1 vs 92.5±13.9,50.2±18.2 vs 105.5±37.0,37.0±11.8 vs 71.7±22.0,均P<0.01).结论:SMAO休克伴有氧自由基代谢紊乱,体内脂质过氧化过程加强.黄芪注射液通过抗脂质过氧化稳定细胞膜,改善红细胞膜微黏度,减轻组织损伤,延缓SMAO休克的发展.
文摘AIM:To assess B1a cell expression in the rectal mucosa of ulcerative colitis (UC) patients in comparison with healthy controls.METHODS:Rectal mucosa biopsies were collected from 15 UC patients and 17 healthy controls.CD5 + B cells were analysed by three colour flow cytometry from rectal mucosal samples after mechanical disaggregation by Medimachine.Immunohistochemical analysis of B and T lymphocytes was also performed.Correlations between,on the one hand,rectal B1a cell concentrations and,on the other,erythrocyte sedimentation rate and C-reactive protein levels and clinical,endoscopic and histological disease activity indices were evaluated.RESULTS:Rectal B-lymphocyte (CD19 + /CD45 +) rate and concentration were higher in UC patients compared with those in healthy controls (47.85% ± 3.12% vs 26.10% ± 3.40%,P=0.001 and 501 ± 91 cells/mm 2 vs 117 ± 18 cells/mm 2,P < 0.001);Rectal B1a cell density (CD5 + CD19 +) was higher in UC patients than in healthy controls (85 ± 15 cells/mm 2 vs 31 ± 6.7 cells/mm 2,P=0.009).Rectal B1a cell (CD5/CD19 +) rate correlated inversely with endoscopic classification (Rs=-0.637,P < 0.05).CONCLUSION:B1a lymphocytes seem to be involved in the pathogenesis of UC,however,the role they play in its early phases and in disease activity,have yet to be defined.
