Rosiglitazone down-regulates lipopolysaccharide-induced expression of CD40 and intercellular adhesion molecule 1 in rat peritoneal mesothelial cells through a NF-κB dependent mechanism

Objective To investigate the effect and mechanism by which PPARγ ligand, rosiglitasone, regulates the expression of CD40 and intercellular adhesion molecule 1 (ICAM-1) in the rat peritoneal mesothelial cells (RPMCs) induced by lipopolysaccharide (LPS). Methods RPMCs were harvested from Sprague-Dawley rat peritoneal cavity and maintained under defined in vitro conditions. The cells were randomly divided into groups as follows: medium, LPS (5 mg/L), LPS (5 mg/L)+BAY11-7085(5 μmol/L, NF-κB inhibitor), rosiglitazone (10 μmol/L or 20 μmol/L, peroxisome proliferator-activated receptor γ activator), LPS (5 mg/L)+rosiglitazone (10 μmol/L)+GW9662 (3 μmol/L, peroxisome proliferator-aetivatcd receptor γ antagonist), and LPS (5 mg/L)+vehicle (DMSO 0.2 ml/L). The expressions of CD40 and ICAM-1 RNA in RPMCs were examined by RT-PCR after 3 hour treatment, and the protein expressions of CD40, ICAM-1, p-NF-κB p65 and p-IκBα were examined by Western blot or immunofluorescence after 24 hour treatment. Results Following treatment with LPS, both the expressions of CD40 and ICAM-1 protein in RPMCs were up-regulated significantly (P<0.05), and the phosphoralation of p65 was increased greatly (1.10±0.17 vs 0.55±0.06, P<0.05). BAY11-7085 (5 μmol/L) significantly decreased the protein expression of p-p65 (0.22±0.11 vs 1.10±0.17, P<0.01), CD40 (0.34±0.02 vs 0.50±0.06, P<0.05) and ICAM-1 (0.35±0.16 vs 0.74±0.03, P<0.05). Pretreated with rosiglitazone for 3 h then added with LPS for 1 h, the levels of p-p65, CD40 and ICAM-1 in RPMCs were significantly decreased compared with those of LPS group (0.77±0.08 vs 0.90±0.10, P相似文献   

Rosiglitazone down-regulates lipopolysaccharide-induced expression of CD40 and intercellular adhesion molecule 1 in rat peritoneal mesothelial cells through a NF-κB dependent mechanism

Objective To investigate the effect and mechanism by which PPARγ ligand, rosiglitasone, regulates the expression of CD40 and intercellular adhesion molecule 1 (ICAM-1) in the rat peritoneal mesothelial cells (RPMCs) induced by lipopolysaccharide (LPS). Methods RPMCs were harvested from Sprague-Dawley rat peritoneal cavity and maintained under defined in vitro conditions. The cells were randomly divided into groups as follows: medium, LPS (5 mg/L), LPS (5 mg/L)+BAY11-7085(5 μmol/L, NF-κB inhibitor), rosiglitazone (10 μmol/L or 20 μmol/L, peroxisome proliferator-activated receptor γ activator), LPS (5 mg/L)+rosiglitazone (10 μmol/L)+GW9662 (3 μmol/L, peroxisome proliferator-aetivatcd receptor γ antagonist), and LPS (5 mg/L)+vehicle (DMSO 0.2 ml/L). The expressions of CD40 and ICAM-1 RNA in RPMCs were examined by RT-PCR after 3 hour treatment, and the protein expressions of CD40, ICAM-1, p-NF-κB p65 and p-IκBα were examined by Western blot or immunofluorescence after 24 hour treatment. Results Following treatment with LPS, both the expressions of CD40 and ICAM-1 protein in RPMCs were up-regulated significantly (P<0.05), and the phosphoralation of p65 was increased greatly (1.10±0.17 vs 0.55±0.06, P<0.05). BAY11-7085 (5 μmol/L) significantly decreased the protein expression of p-p65 (0.22±0.11 vs 1.10±0.17, P<0.01), CD40 (0.34±0.02 vs 0.50±0.06, P<0.05) and ICAM-1 (0.35±0.16 vs 0.74±0.03, P<0.05). Pretreated with rosiglitazone for 3 h then added with LPS for 1 h, the levels of p-p65, CD40 and ICAM-1 in RPMCs were significantly decreased compared with those of LPS group (0.77±0.08 vs 0.90±0.10, P相似文献   

Rosiglitazone down-regulates lipopolysaccharide-induced expression of CD40 and intercellular adhesion molecule 1 in rat peritoneal mesothelial cells through a NF-κB dependent mechanism

Objective To investigate the effect and mechanism by which PPARγ ligand, rosiglitasone, regulates the expression of CD40 and intercellular adhesion molecule 1 (ICAM-1) in the rat peritoneal mesothelial cells (RPMCs) induced by lipopolysaccharide (LPS). Methods RPMCs were harvested from Sprague-Dawley rat peritoneal cavity and maintained under defined in vitro conditions. The cells were randomly divided into groups as follows: medium, LPS (5 mg/L), LPS (5 mg/L)+BAY11-7085(5 μmol/L, NF-κB inhibitor), rosiglitazone (10 μmol/L or 20 μmol/L, peroxisome proliferator-activated receptor γ activator), LPS (5 mg/L)+rosiglitazone (10 μmol/L)+GW9662 (3 μmol/L, peroxisome proliferator-aetivatcd receptor γ antagonist), and LPS (5 mg/L)+vehicle (DMSO 0.2 ml/L). The expressions of CD40 and ICAM-1 RNA in RPMCs were examined by RT-PCR after 3 hour treatment, and the protein expressions of CD40, ICAM-1, p-NF-κB p65 and p-IκBα were examined by Western blot or immunofluorescence after 24 hour treatment. Results Following treatment with LPS, both the expressions of CD40 and ICAM-1 protein in RPMCs were up-regulated significantly (P<0.05), and the phosphoralation of p65 was increased greatly (1.10±0.17 vs 0.55±0.06, P<0.05). BAY11-7085 (5 μmol/L) significantly decreased the protein expression of p-p65 (0.22±0.11 vs 1.10±0.17, P<0.01), CD40 (0.34±0.02 vs 0.50±0.06, P<0.05) and ICAM-1 (0.35±0.16 vs 0.74±0.03, P<0.05). Pretreated with rosiglitazone for 3 h then added with LPS for 1 h, the levels of p-p65, CD40 and ICAM-1 in RPMCs were significantly decreased compared with those of LPS group (0.77±0.08 vs 0.90±0.10, P相似文献   

MicroRNA在腹膜透析中的研究进展

腹膜透析是终末期肾病患者的主要治疗方式之一,因有能更好地保护残余肾功能等优势,具有广泛的应用前景。但长期腹膜透析容易出现多种并发症,其中腹膜透析相关性腹膜炎是最常见的并发症之一,反复发生的炎症刺激会加速腹膜纤维化的发展,最终导致超滤衰竭,腹膜透析失败。MicroRNA（miRNA）属于非编码RNA的一种,在炎症及纤维化过程中的作用备受关注,众多miRNA参与了腹膜炎症及纤维化过程。新近研究显示,腹膜透析过程中,多种miRNA的表达谱发生了改变。该文就miRNA在腹膜透析中的研究进展进行综述。     

PPARγ激动剂对腹膜透析相关性急性腹膜炎大鼠PPARγ、Toll样受体4表达及STAT1信号活化的影响

目的 观察过氧化物酶体增殖物活化受体γ(PPARγ)激动剂罗格列酮和15脱氧前列腺素J2（15d-PGJ2）对脂多糖（LPS）诱导大鼠腹膜透析相关性急性腹膜炎模型腹膜组织PPARγ、Toll样受体4（TLR4）表达、STAT1活化及腹腔局部炎性反应的影响。 方法 24只雄性SD大鼠随机分成4组，每组6只。对照组：腹腔注入4.25%葡萄糖乳酸盐腹膜透析液（简称腹透液，90 ml/kg）；LPS组：LPS 1 mg/kg腹腔注入4 h后，再注入腹透液；罗格列酮+ LPS组（罗格列酮组）：罗格列酮20 mg&#8226;kg-1&#8226;d-1灌胃预处理3 d，注入LPS及腹透液；15d-PGJ2 + LPS组（15d-PGJ2组）：15d-PGJ2 0.3 mg&#8226;kg-1&#8226;d-1腹腔注入预处理3 d，注入LPS及腹透液。注入腹透液4 h后处死大鼠，留取腹水、壁层及脏层腹膜组织。ELISA法检测腹水中IL-6浓度。常规行腹膜组织Masson染色和腹水白细胞计数。RT-PCR检测腹膜组织PPARγ、TLR4 mRNA的表达；Western印迹法检测腹膜组织PPARγ、TLR4、磷酸化（p）-STAT1、STAT1蛋白的表达。 结果 LPS组大鼠腹水IL-6浓度[268.53（201.87～335.19） ng/L]高于对照组[147.62（130.60～164.64） ng/L）]（P < 0.01）；罗格列酮组大鼠腹水IL-6浓度[110.20（77.60～142.80） ng/L]低于LPS组（P < 0.05）。与对照组比较，LPS组大鼠腹膜组织明显水肿，腹膜组织PPARγ、TLR4 mRNA及蛋白表达均显著增强（P < 0.05）。与LPS组相比，罗格列酮组大鼠腹膜组织水肿明显减轻，PPARγ、TLR4 mRNA表达显著增高（P < 0.05），但其蛋白表达显著减弱（P < 0.05）。15d-PGJ2组大鼠腹膜组织水肿明显减轻，PPARγ mRNA及其蛋白表达均显著减弱（均P < 0.05），TLR4 mRNA表达显著增强（P < 0.01），但其蛋白表达减弱（P < 0.05）。各组间腹水白细胞计数差异无统计学意义。罗格列酮、15d-PGJ2均明显上调LPS诱导的p-STAT1表达（P < 0.01）。 结论 罗格列酮和15d-PGJ2可负性调节LPS诱导的大鼠急性腹膜炎性反应，并对LPS信号通路中相关功能蛋白起一定的调控作用。     

肾病综合征出血热患者尿沉渣细胞中病毒载量与肾功能损害的相关性分析

肾病综合征出血热（HFRS）病毒可直接侵犯肾脏细胞，因此一半以上的患者表现为急性肾功能衰竭，是致死的主要原因。我们用流式细胞术（FCM）检测了HFRS患者尿沉渣细胞（USC）中病毒载量，并分析其与肾功能损害的关系，报告如下。     

Rosiglitazone down-regulates lipopolysaccharide-induced expression of CD40 and intercellular adhesion molecule 1 in rat peritoneal mesothelial cells through a NF-κB dependent mechanism

Objective To investigate the effect and mechanism by which PPARγ ligand, rosiglitasone, regulates the expression of CD40 and intercellular adhesion molecule 1 (ICAM-1) in the rat peritoneal mesothelial cells (RPMCs) induced by lipopolysaccharide (LPS). Methods RPMCs were harvested from Sprague-Dawley rat peritoneal cavity and maintained under defined in vitro conditions. The cells were randomly divided into groups as follows: medium, LPS (5 mg/L), LPS (5 mg/L)+BAY11-7085(5 μmol/L, NF-κB inhibitor), rosiglitazone (10 μmol/L or 20 μmol/L, peroxisome proliferator-activated receptor γ activator), LPS (5 mg/L)+rosiglitazone (10 μmol/L)+GW9662 (3 μmol/L, peroxisome proliferator-aetivatcd receptor γ antagonist), and LPS (5 mg/L)+vehicle (DMSO 0.2 ml/L). The expressions of CD40 and ICAM-1 RNA in RPMCs were examined by RT-PCR after 3 hour treatment, and the protein expressions of CD40, ICAM-1, p-NF-κB p65 and p-IκBα were examined by Western blot or immunofluorescence after 24 hour treatment. Results Following treatment with LPS, both the expressions of CD40 and ICAM-1 protein in RPMCs were up-regulated significantly (P<0.05), and the phosphoralation of p65 was increased greatly (1.10±0.17 vs 0.55±0.06, P<0.05). BAY11-7085 (5 μmol/L) significantly decreased the protein expression of p-p65 (0.22±0.11 vs 1.10±0.17, P<0.01), CD40 (0.34±0.02 vs 0.50±0.06, P<0.05) and ICAM-1 (0.35±0.16 vs 0.74±0.03, P<0.05). Pretreated with rosiglitazone for 3 h then added with LPS for 1 h, the levels of p-p65, CD40 and ICAM-1 in RPMCs were significantly decreased compared with those of LPS group (0.77±0.08 vs 0.90±0.10, P相似文献   

Rosiglitazone down-regulates lipopolysaccharide-induced expression of CD40 and intercellular adhesion molecule 1 in rat peritoneal mesothelial cells through a NF-κB dependent mechanism

Objective To investigate the effect and mechanism by which PPARγ ligand, rosiglitasone, regulates the expression of CD40 and intercellular adhesion molecule 1 (ICAM-1) in the rat peritoneal mesothelial cells (RPMCs) induced by lipopolysaccharide (LPS). Methods RPMCs were harvested from Sprague-Dawley rat peritoneal cavity and maintained under defined in vitro conditions. The cells were randomly divided into groups as follows: medium, LPS (5 mg/L), LPS (5 mg/L)+BAY11-7085(5 μmol/L, NF-κB inhibitor), rosiglitazone (10 μmol/L or 20 μmol/L, peroxisome proliferator-activated receptor γ activator), LPS (5 mg/L)+rosiglitazone (10 μmol/L)+GW9662 (3 μmol/L, peroxisome proliferator-aetivatcd receptor γ antagonist), and LPS (5 mg/L)+vehicle (DMSO 0.2 ml/L). The expressions of CD40 and ICAM-1 RNA in RPMCs were examined by RT-PCR after 3 hour treatment, and the protein expressions of CD40, ICAM-1, p-NF-κB p65 and p-IκBα were examined by Western blot or immunofluorescence after 24 hour treatment. Results Following treatment with LPS, both the expressions of CD40 and ICAM-1 protein in RPMCs were up-regulated significantly (P<0.05), and the phosphoralation of p65 was increased greatly (1.10±0.17 vs 0.55±0.06, P<0.05). BAY11-7085 (5 μmol/L) significantly decreased the protein expression of p-p65 (0.22±0.11 vs 1.10±0.17, P<0.01), CD40 (0.34±0.02 vs 0.50±0.06, P<0.05) and ICAM-1 (0.35±0.16 vs 0.74±0.03, P<0.05). Pretreated with rosiglitazone for 3 h then added with LPS for 1 h, the levels of p-p65, CD40 and ICAM-1 in RPMCs were significantly decreased compared with those of LPS group (0.77±0.08 vs 0.90±0.10, P相似文献   

血脂异常与肾损害的社区筛查结果报告

目的 本研究通过对社区人群血脂异常、肾损害的流行病学分析,探讨现阶段我国城市居民血脂异常与肾损害的关系.方法 选择珠海市城区愿住民最集中的湾仔社区,筛查对象为年龄18～75岁的居民,取空腹静脉血,检测血脂、血肌酐;收集非晨尿标本,进行尿常规检查,同时检测尿白蛋白,并计算尿白蛋白和尿肌酐比值(ACR).结果 接受筛查人群中血脂异常患病率:高胆固醇血症40.5%,高甘油三脂血症37.1%,高密度脂蛋白降低者16.4%;肾损害患病率14.1%.商甘油三脂血症患者肾损害发生率17.1%(91例/533例),显著高于正常甘油三脂人群肾损害发生率12.4%(112例/903例),P＝0.000;高密度脂蛋白降低者肾损害发生率20%(47例/235例),显著高于高密度脂蛋白正常人群肾损害发生率13.0%(156例/1198例),P＝0.007.结论 结果提示珠海市社区人群血脂异常发病率可能高于我国平均水平;血脂异常可能是引起肾损害的重要危险因素之一.     

腹膜组织PPAR-γ、TLR4表达及STAT1信号活化与LPS诱导大鼠急性腹膜炎的相关性研究

h后p-STAT1表达明显升高,持续至24 h,与对照组相比,差异有统计学意义(P＜0.01).LPS作用4、8 h时大鼠腹水中IL-6浓度显著增高,与对照组相比差异均有统计学意义(P＜0.01,P＜0.05),12 h后其浓度接近对照组水平.壁层腹膜石蜡切片Masson染色可见LPS作用不同时间组腹膜组织明显水肿;各组间腹水白细胞计数差异无统计学意义.结论 腹膜组织PPAR-γ、TLR4的高表达及STAT1活化共同参与了LPS诱导的大鼠腹膜透析相关性急性腹膜炎症过程.