目的研究IL-4调控树突状细胞特异性非整合素(dendritic-cell specific ICAM-3 grabbing non-integrin,DC-SIGN)的表达对树突状细胞免疫学功能的影响,以探讨DC-SIGN表达与结核病发生的关系。方法用不同剂量的IL-4(5、10、50、100、200ng/...目的研究IL-4调控树突状细胞特异性非整合素(dendritic-cell specific ICAM-3 grabbing non-integrin,DC-SIGN)的表达对树突状细胞免疫学功能的影响,以探讨DC-SIGN表达与结核病发生的关系。方法用不同剂量的IL-4(5、10、50、100、200ng/ml)调控DCs表面DC-SIGN的表达水平;根据加入IL-4剂量将DCs分为5ng/ml组和50ng/ml组,分别加入100ng/ml的脂多糖(lipopolysaccharide,LPS)、结核杆菌H37Rv菌悬液共培养。应用流式细胞仪检测各组DCs表型(CD11c、DC-SIGN、CD83、CD86、HLA-DR),ELISA法检测细胞培养液中IL-12、IL-10含量,混合淋巴细胞培养法检测各组DCs刺激T淋巴细胞增殖的能力。结果①IL-4能调控DC-SIGN的表达水平,并呈剂量依赖性,当加入IL-4的剂量由5ng/ml增加到50ng/ml时,DC-SIGN的表达水平显著增加(P<0.05)。当IL-4的剂量由50ng/ml增至200ng/ml时,DC-SIGN的表达水平虽仍随IL-4剂量增加而增加,但差异无统计学意义(P>0.05)。②表达不同水平DC-SIGN的DCs成熟度无显著差异(P>0.05)。③表达不同水平DC-SIGN的DCs加入LPS、H37Rv诱导后,培养液中IL-12含量无显著差异(P>0.05),加入LPS诱导后培养液中IL-10含量也无显著差异(P>0.05),但DC-SIGNhigh-DCs加入H37Rv诱导后培养液中IL-10含量明显高于DC-SIGNlow-DCs(P<0.05)。④表达不同水平DC-SIGN的DCs加入LPS诱导后刺激同种异体T淋巴细胞增殖能力差异无统计学意义(P>0.05)。DC-SIGNhigh-DCs加入H37Rv诱导成熟后与DCs加入LPS诱导成熟后刺激同种异体T淋巴细胞增殖的能力相当(P>0.05),但DC-SIGNlow-DCs加入H37Rv诱导后刺激同种异体T淋巴细胞增殖能力明显低于其他3组(P<0.05)。结论DC-SIGNhigh-DCs加入H37Rv诱导后分泌IL-10水平明显高于DC-SIGNlow-DCs,但DC-SIGNlow-DCs加入H37Rv诱导后刺激T淋巴细胞增殖的能力明显降低。DC-SIGN表达过高或过低均不利于机体抗结核免疫应答。展开更多
Objective:To investigate the protective effects and mechanisms of action of dexamethasone and Salvia miltiorrhiza on multiple organs in rats with severe acute pancreatitis (SAP). Methods:The rats were divided into sha...Objective:To investigate the protective effects and mechanisms of action of dexamethasone and Salvia miltiorrhiza on multiple organs in rats with severe acute pancreatitis (SAP). Methods:The rats were divided into sham-operated, model control, dexamethasone treated, and Salvia miltiorrhiza treated groups. At 3, 6, and 12 h after operation, the mortality rate of different groups, pathological changes, Bcl-2-associated X protein (Bax) and nuclear factor-κB (NF-κB) protein expression levels in multiple organs (the pancreas, liver, kidneys, and lungs), toll-like receptor 4 (TLR-4) protein levels (only in the liver), intercellular adhesion molecule 1 (ICAM-1) protein levels (only in the lung), and terminal deoxynucleotidy transferase mediated deoxyuridine triphosphate (dUTP) nick end labeling (TUNEL) staining expression levels, as well as the serum contents of amylase, glutamate-pyruvate transaminase (GPT), glutamic-oxaloacetic transaminase (GOT), blood urea nitrogen (BUN), and creatinine (CREA) were observed. Results:The mortality rate of the dexamethasone treated group was significantly lower than that of the model control group (P<0.05). The pathological changes in multiple organs in the two treated groups were relieved to different degrees (P<0.05 and P<0.01, respectively), the expression levels of Bax and NF-κB proteins, and apoptotic indexes of multiple organs were reduced (P<0.05 and P<0.01, respectively). The contents of amylase, GPT, GOT, BUN, and CREA in the two treated groups were significantly lower than those in model control groups (P<0.05 and P<0.01, respectively). The expression level of ICAM-1 protein in the lungs (at 3 and 12 h) in the dexamethasone treated group was significantly lower than that in the Salvia miltiorrhiza treated group (P<0.05). The serum contents of CREA (at 12 h) and BUN (at 6 h) of the Salvia miltiorrhiza treated group were significantly lower than those in the dexamethasone treated group (P<0.05). Conclusions:Both dexamethasone and Salvia miltiorrhiza can reduce the inflammatory reaction, regulate apoptosis, and thus protect multiple organs of rats with SAP.展开更多
文摘目的研究IL-4调控树突状细胞特异性非整合素(dendritic-cell specific ICAM-3 grabbing non-integrin,DC-SIGN)的表达对树突状细胞免疫学功能的影响,以探讨DC-SIGN表达与结核病发生的关系。方法用不同剂量的IL-4(5、10、50、100、200ng/ml)调控DCs表面DC-SIGN的表达水平;根据加入IL-4剂量将DCs分为5ng/ml组和50ng/ml组,分别加入100ng/ml的脂多糖(lipopolysaccharide,LPS)、结核杆菌H37Rv菌悬液共培养。应用流式细胞仪检测各组DCs表型(CD11c、DC-SIGN、CD83、CD86、HLA-DR),ELISA法检测细胞培养液中IL-12、IL-10含量,混合淋巴细胞培养法检测各组DCs刺激T淋巴细胞增殖的能力。结果①IL-4能调控DC-SIGN的表达水平,并呈剂量依赖性,当加入IL-4的剂量由5ng/ml增加到50ng/ml时,DC-SIGN的表达水平显著增加(P<0.05)。当IL-4的剂量由50ng/ml增至200ng/ml时,DC-SIGN的表达水平虽仍随IL-4剂量增加而增加,但差异无统计学意义(P>0.05)。②表达不同水平DC-SIGN的DCs成熟度无显著差异(P>0.05)。③表达不同水平DC-SIGN的DCs加入LPS、H37Rv诱导后,培养液中IL-12含量无显著差异(P>0.05),加入LPS诱导后培养液中IL-10含量也无显著差异(P>0.05),但DC-SIGNhigh-DCs加入H37Rv诱导后培养液中IL-10含量明显高于DC-SIGNlow-DCs(P<0.05)。④表达不同水平DC-SIGN的DCs加入LPS诱导后刺激同种异体T淋巴细胞增殖能力差异无统计学意义(P>0.05)。DC-SIGNhigh-DCs加入H37Rv诱导成熟后与DCs加入LPS诱导成熟后刺激同种异体T淋巴细胞增殖的能力相当(P>0.05),但DC-SIGNlow-DCs加入H37Rv诱导后刺激同种异体T淋巴细胞增殖能力明显低于其他3组(P<0.05)。结论DC-SIGNhigh-DCs加入H37Rv诱导后分泌IL-10水平明显高于DC-SIGNlow-DCs,但DC-SIGNlow-DCs加入H37Rv诱导后刺激T淋巴细胞增殖的能力明显降低。DC-SIGN表达过高或过低均不利于机体抗结核免疫应答。
基金Project (No. 2010382) supported by the Foundation for the Excellent Middle-Aged and Talented Young Persons of Zhejiang Province"151", China
文摘Objective:To investigate the protective effects and mechanisms of action of dexamethasone and Salvia miltiorrhiza on multiple organs in rats with severe acute pancreatitis (SAP). Methods:The rats were divided into sham-operated, model control, dexamethasone treated, and Salvia miltiorrhiza treated groups. At 3, 6, and 12 h after operation, the mortality rate of different groups, pathological changes, Bcl-2-associated X protein (Bax) and nuclear factor-κB (NF-κB) protein expression levels in multiple organs (the pancreas, liver, kidneys, and lungs), toll-like receptor 4 (TLR-4) protein levels (only in the liver), intercellular adhesion molecule 1 (ICAM-1) protein levels (only in the lung), and terminal deoxynucleotidy transferase mediated deoxyuridine triphosphate (dUTP) nick end labeling (TUNEL) staining expression levels, as well as the serum contents of amylase, glutamate-pyruvate transaminase (GPT), glutamic-oxaloacetic transaminase (GOT), blood urea nitrogen (BUN), and creatinine (CREA) were observed. Results:The mortality rate of the dexamethasone treated group was significantly lower than that of the model control group (P<0.05). The pathological changes in multiple organs in the two treated groups were relieved to different degrees (P<0.05 and P<0.01, respectively), the expression levels of Bax and NF-κB proteins, and apoptotic indexes of multiple organs were reduced (P<0.05 and P<0.01, respectively). The contents of amylase, GPT, GOT, BUN, and CREA in the two treated groups were significantly lower than those in model control groups (P<0.05 and P<0.01, respectively). The expression level of ICAM-1 protein in the lungs (at 3 and 12 h) in the dexamethasone treated group was significantly lower than that in the Salvia miltiorrhiza treated group (P<0.05). The serum contents of CREA (at 12 h) and BUN (at 6 h) of the Salvia miltiorrhiza treated group were significantly lower than those in the dexamethasone treated group (P<0.05). Conclusions:Both dexamethasone and Salvia miltiorrhiza can reduce the inflammatory reaction, regulate apoptosis, and thus protect multiple organs of rats with SAP.
