AIM: To identify the property of dendritic cells (DCs) of peripheral blood monocytes (PBMC) in patients with chronic HBV infection. METHODS: Twenty patients with persistent HBV infection were included in this study, 1...AIM: To identify the property of dendritic cells (DCs) of peripheral blood monocytes (PBMC) in patients with chronic HBV infection. METHODS: Twenty patients with persistent HBV infection were included in this study, 10 healthy subjects being used as a control group. The peripheral blood mononuclear cells (PBMC) of T cell-depleted populations were incubated and induced into mature dendritic cells in the RPMI-1640 medium in the presence of cytokines GM-CSF, IL-4, FLt-3,TNF-alpha and 100mL.L(-1 )of fetal calf serum for a total of 10-12 days. The expressions of surface markers on DCs were evaluated using flow cytometric analysis. ELISA method was used to determine the cytokine levels of interleukin-12 (IL-12) and IL-10 in the supernatant produced by DCs. For detection of the stimulatory capacity of DCs to T cell proliferation, mytomycin C-treated DC were incubated with allogenic T cells. RESULTS: A typical morphology of mature DCs from healthy subjects and HBV-infected patients was induced in in vitro incubation, but the proliferation ability and cellular number of DCs from HBV-infected patients significantly decreased compared with healthy individuals. In particular, the expression levels of HLA-DR, CD80 (B7-1) and CD86 (B7-2) on DC surface from patients were also lower than that from healthy individuals (0.46 vs 0.92 for HLA-DR, 0.44 vs 0.88 for CD80 and 0.44 vs 0.84 for CD86,P【0.05). The stimulatory capacity and production of IL-12 of DCs from patients in allogenic mixed lymphocyte reaction (AMLR) significantly decreased, but the production level of nitric oxide (NO) by DCs simultaneously increased compared with healthy subjects (86 +/- 15 vs 170 +/- 22 micromol.L(-1), P 【0.05). CONCLUSION: The patients with chronic HBV infection have the defective function and immature phenotype of dendritic cells, which may be associated with the inability of efficient presentation of HBV antigens to host immune system for the clearance of HBV.展开更多
目的:观察在常规西医治疗的基础上,痰热清注射液治疗慢性阻塞性肺疾病急性加重期(acute exacerbation of chronic obstructive pul monary disease,AECOPD)痰热阻肺证患者的临床疗效,并从气道炎症和气道黏液高分泌研究清热化痰法治疗AEC...目的:观察在常规西医治疗的基础上,痰热清注射液治疗慢性阻塞性肺疾病急性加重期(acute exacerbation of chronic obstructive pul monary disease,AECOPD)痰热阻肺证患者的临床疗效,并从气道炎症和气道黏液高分泌研究清热化痰法治疗AECOPD痰热阻肺证的机制。方法:选择AECOPD患者90例,将其随机分为痰热清组、盐酸氨溴索组和对照组。对照组仅给予西医基础治疗;痰热清组给予西医基础治疗的同时,静脉滴注痰热清注射液20ml+5%葡萄糖注射液250ml,1次/d;盐酸氨溴索组给予西医基础治疗的同时,静脉滴注盐酸氨溴索注射液15mg+5%葡萄糖注射液100ml,2次/d,疗程均为10d。观察治疗前后中医症状积分、血浆白细胞介素8(interleukin-8,IL-8)、IL-10和中性粒细胞弹性蛋白酶(neutrophil elastase,NE)水平。结果:痰热清注射液可使咳嗽、痰量、咳痰、气喘、发热、舌苔、脉象等中医症状和体征明显改善(P<0.05);其改善咳嗽、痰量和咳痰的疗效明显优于对照组(P<0.05),但与盐酸氨溴索组比较,差异无统计学意义(P>0.05);痰热清组舌苔变化均较盐酸氨溴索组和对照组有所改善(P<0.05)。治疗后,痰热清组及盐酸氨溴索组IL-8、IL-10和NE水平均明显下降(P<0.05),而对照组仅IL-8和IL-10明显下降(P<0.05);痰热清组IL-8治疗前后变化高于其他两组,盐酸氨溴索组IL-10和NE治疗前后的变化高于其他2组,但3组间IL-8、IL-10和NE治疗前后的变化比较,差异均无统计学意义(P>0.05)。3组总显效率比较,痰热清组及盐酸氨溴索组均优于对照组(P<0.05),痰热清组和盐酸氨溴索组显效率比较,差异无统计学意义(P>0.05);3组总有效率比较,差异均无统计学意义(P>0.05)。结论:清热化痰法代表方痰热清注射液在西医的基础治疗上能够较好地改善AECOPD(痰热阻肺证)患者中医症状及体征,其治疗的机制之一可能是通过促进IL-8、NE水平的下降以及延缓IL-10水平下降而改展开更多
AIM: To investigate the expression of matrix metallopr-oteinase-2 and tissue inhibitor of metalloproteinase-1 in hepatic fibrosis and the antifibrogenic role of exogenous interleukin-10 (IL-10). METHODS: Hepatic fibro...AIM: To investigate the expression of matrix metallopr-oteinase-2 and tissue inhibitor of metalloproteinase-1 in hepatic fibrosis and the antifibrogenic role of exogenous interleukin-10 (IL-10). METHODS: Hepatic fibrosis was induced by CCI4 administration and 60 male Sprague-Dawley rats were randomly divided into normal control group (group N, 8 rats), CCI4-induced group (group C, 28 rats) and IL-10-treated group (group I, 24 rats). At the beginning of the 7th and 11th wk, rats in each group were routinely perfused with pronase E and type IV collagenase through portal vein catheter and the suspension was centrifuged by 11% Nycodenz density gradient to isolate hepatic stellate cells (HSCs). RT-PCR was used to analyze mRNA of MMP-2 and TIMP-1 from freshly isolated cells. Densitometric data were standardized with β-actin signals. Immunocytochemistry was performed to detect MMP-2 and TIMP-1 expression in HSC cultured for 72 h. RESULTS: Compared to group N in the 7th wk, MMP-2 and TIMP-1 mRNA increased in group C (P= 0.001/0.001) and group I (P= 0.001/0.009). The level of MMP-2 and TIMP-1 mRNA in group I was significantly lower than that in group C (P= 0.001/0.001). In the 11th wk, MMP-2 mRNA in group I was still lower than that in group C (P = 0.005), but both dropped compared with that in the 7th week (P = 0.001/0.004). TIMP-1 mRNA in group I was still lower than that in group C (P= 0.001), and increased in group C (P= 0.001) while decreased in group I (P = 0.042) compared with that in the 7th wk. Same results were found by immunocytochemistry. CONCLUSION: Expression of MMP-2 and TIMP-1 is increased in hepatic fibrosis. IL-10 exhibits an antifibrogenic effect by suppressing MMP-2 and TIMP-1 expression.展开更多
基金National Natural Science Foundation of China,No.39970831.
文摘AIM: To identify the property of dendritic cells (DCs) of peripheral blood monocytes (PBMC) in patients with chronic HBV infection. METHODS: Twenty patients with persistent HBV infection were included in this study, 10 healthy subjects being used as a control group. The peripheral blood mononuclear cells (PBMC) of T cell-depleted populations were incubated and induced into mature dendritic cells in the RPMI-1640 medium in the presence of cytokines GM-CSF, IL-4, FLt-3,TNF-alpha and 100mL.L(-1 )of fetal calf serum for a total of 10-12 days. The expressions of surface markers on DCs were evaluated using flow cytometric analysis. ELISA method was used to determine the cytokine levels of interleukin-12 (IL-12) and IL-10 in the supernatant produced by DCs. For detection of the stimulatory capacity of DCs to T cell proliferation, mytomycin C-treated DC were incubated with allogenic T cells. RESULTS: A typical morphology of mature DCs from healthy subjects and HBV-infected patients was induced in in vitro incubation, but the proliferation ability and cellular number of DCs from HBV-infected patients significantly decreased compared with healthy individuals. In particular, the expression levels of HLA-DR, CD80 (B7-1) and CD86 (B7-2) on DC surface from patients were also lower than that from healthy individuals (0.46 vs 0.92 for HLA-DR, 0.44 vs 0.88 for CD80 and 0.44 vs 0.84 for CD86,P【0.05). The stimulatory capacity and production of IL-12 of DCs from patients in allogenic mixed lymphocyte reaction (AMLR) significantly decreased, but the production level of nitric oxide (NO) by DCs simultaneously increased compared with healthy subjects (86 +/- 15 vs 170 +/- 22 micromol.L(-1), P 【0.05). CONCLUSION: The patients with chronic HBV infection have the defective function and immature phenotype of dendritic cells, which may be associated with the inability of efficient presentation of HBV antigens to host immune system for the clearance of HBV.
文摘目的:观察在常规西医治疗的基础上,痰热清注射液治疗慢性阻塞性肺疾病急性加重期(acute exacerbation of chronic obstructive pul monary disease,AECOPD)痰热阻肺证患者的临床疗效,并从气道炎症和气道黏液高分泌研究清热化痰法治疗AECOPD痰热阻肺证的机制。方法:选择AECOPD患者90例,将其随机分为痰热清组、盐酸氨溴索组和对照组。对照组仅给予西医基础治疗;痰热清组给予西医基础治疗的同时,静脉滴注痰热清注射液20ml+5%葡萄糖注射液250ml,1次/d;盐酸氨溴索组给予西医基础治疗的同时,静脉滴注盐酸氨溴索注射液15mg+5%葡萄糖注射液100ml,2次/d,疗程均为10d。观察治疗前后中医症状积分、血浆白细胞介素8(interleukin-8,IL-8)、IL-10和中性粒细胞弹性蛋白酶(neutrophil elastase,NE)水平。结果:痰热清注射液可使咳嗽、痰量、咳痰、气喘、发热、舌苔、脉象等中医症状和体征明显改善(P<0.05);其改善咳嗽、痰量和咳痰的疗效明显优于对照组(P<0.05),但与盐酸氨溴索组比较,差异无统计学意义(P>0.05);痰热清组舌苔变化均较盐酸氨溴索组和对照组有所改善(P<0.05)。治疗后,痰热清组及盐酸氨溴索组IL-8、IL-10和NE水平均明显下降(P<0.05),而对照组仅IL-8和IL-10明显下降(P<0.05);痰热清组IL-8治疗前后变化高于其他两组,盐酸氨溴索组IL-10和NE治疗前后的变化高于其他2组,但3组间IL-8、IL-10和NE治疗前后的变化比较,差异均无统计学意义(P>0.05)。3组总显效率比较,痰热清组及盐酸氨溴索组均优于对照组(P<0.05),痰热清组和盐酸氨溴索组显效率比较,差异无统计学意义(P>0.05);3组总有效率比较,差异均无统计学意义(P>0.05)。结论:清热化痰法代表方痰热清注射液在西医的基础治疗上能够较好地改善AECOPD(痰热阻肺证)患者中医症状及体征,其治疗的机制之一可能是通过促进IL-8、NE水平的下降以及延缓IL-10水平下降而改
基金Supported by the Science and Technology Project of Fujian Educational Committee, No. JA04198
文摘AIM: To investigate the expression of matrix metallopr-oteinase-2 and tissue inhibitor of metalloproteinase-1 in hepatic fibrosis and the antifibrogenic role of exogenous interleukin-10 (IL-10). METHODS: Hepatic fibrosis was induced by CCI4 administration and 60 male Sprague-Dawley rats were randomly divided into normal control group (group N, 8 rats), CCI4-induced group (group C, 28 rats) and IL-10-treated group (group I, 24 rats). At the beginning of the 7th and 11th wk, rats in each group were routinely perfused with pronase E and type IV collagenase through portal vein catheter and the suspension was centrifuged by 11% Nycodenz density gradient to isolate hepatic stellate cells (HSCs). RT-PCR was used to analyze mRNA of MMP-2 and TIMP-1 from freshly isolated cells. Densitometric data were standardized with β-actin signals. Immunocytochemistry was performed to detect MMP-2 and TIMP-1 expression in HSC cultured for 72 h. RESULTS: Compared to group N in the 7th wk, MMP-2 and TIMP-1 mRNA increased in group C (P= 0.001/0.001) and group I (P= 0.001/0.009). The level of MMP-2 and TIMP-1 mRNA in group I was significantly lower than that in group C (P= 0.001/0.001). In the 11th wk, MMP-2 mRNA in group I was still lower than that in group C (P = 0.005), but both dropped compared with that in the 7th week (P = 0.001/0.004). TIMP-1 mRNA in group I was still lower than that in group C (P= 0.001), and increased in group C (P= 0.001) while decreased in group I (P = 0.042) compared with that in the 7th wk. Same results were found by immunocytochemistry. CONCLUSION: Expression of MMP-2 and TIMP-1 is increased in hepatic fibrosis. IL-10 exhibits an antifibrogenic effect by suppressing MMP-2 and TIMP-1 expression.
