血浆TRAF-3表达在炎症性肠病中的意义

目的分析血浆肿瘤坏死因子受体相关因子-3(tumor necrosis factor receptor-associated fac-tor-3,TRAF3)水平对于炎症性肠病的诊断价值以及与内镜下疾病活动性的相关性。方法应用酶联免疫吸附试验(Enzyme-Linked ImmunoSorbent Assay,ELISA)分析炎症性肠病患者和正常对照者血浆中TRAF3蛋白的表达,受试者工作特征曲线(receiver-operating characteristic,ROC)分析血浆TRAF3水平对于克罗恩病和溃疡性结肠炎的诊断价值,应用Pearson相关分析研究血浆TRAF3水平与内镜下疾病活动性的相关性。数据处理使用GraphPad Prism 5。结果克罗恩病患者(P=0.000)和溃疡性结肠炎患者(P=0.000)血浆TRAF3水平显著高于正常对照者,同时TRAF3对区分克罗恩病患者和正常对照者(P=0.000)以及区分溃疡性结肠炎患者和正常对照者(P=0.000)具有显著的诊断价值,克罗恩病患者(r=-0.093,P=0.473)以及溃疡性结肠炎患者(r=0.043,P=0.733)血浆TRAF3表达水平和内镜下疾病活动指数均无显著的相关性。结论炎症性肠病患者血浆TRAF3水平增高,对区分炎症性肠病患者和正常对照者具有诊断价值,但血浆中TRAF3的水平不能反应内镜下疾病活动程度。     

炎症性肠病患者血浆TRAF1的表达及其临床意义

目的比较炎症性肠病患者血浆肿瘤坏死因子受体相关因子-1（tumor necrosis factor receptor-assoc iated factor-1,TRAF-1）水平和正常对照者的差异,分析血浆TRAF1水平对炎症性肠病的诊断价值以及与内镜下疾病活动性的相关性。方法共纳入62例克罗恩病患者、64例溃疡性结肠炎患者和56例正常对照者。应用酶联免疫吸附试验（Enzym e-linked immuno-sorbent assay,ELISA）分析炎症性肠病患者和正常对照者血浆中TRAF1蛋白的表达,受试者工作特征曲线（rece iver-operating characteristic,ROC）分析血浆TRAF1水平对克罗恩病和溃疡性结肠炎的诊断价值,应用Pearson相关分析研究血浆TRAF1水平与内镜下疾病活动性的相关性。结果克罗恩病患者（P=0.000）和溃疡性结肠炎患者（P=0.000）血浆TRAF1水平显著高于正常对照者,同时TRAF1对区分克罗恩病患者和正常对照者（P=0.000）以及区分溃疡性结肠炎患者和正常对照者（P=0.000）具有显著的诊断价值。克罗恩病患者血浆TRAF1表达水平和内镜下疾病活动指数呈较低的负相关（r=-0.260,P=0.041）,而溃疡性结肠炎患者血浆TRAF1水平与内镜下疾病活动程度无显著相关性（r=0.029,P=0.821）。结论炎症性肠病患者血浆TRAF1水平增高,血浆TRAF1水平对区分炎症性肠病患者和正常对照者具有诊断价值,但血浆中TRAF1的水平不能反应内镜下疾病活动程度。     

溃疡性结肠炎患者Wnt9b的高表达及临床价值

目的研究溃疡性结肠炎和克罗恩病患者Wnt9b的表达,分析血浆Wnt9b水平与炎症性肠病患者内镜下疾病活动性的相关性以及对溃疡性结肠炎和克罗恩病的鉴别诊断价值。方法应用酶联免疫吸附试验(Enzyme-Linked ImmunoSorbent Assay,ELISA)对克罗恩病患者、溃疡性结肠炎患者和正常对照者血浆中Wnt9b的表达进行测定。分析血浆Wnt9b水平与炎症性肠病患者内镜下疾病活动性的相关性,通过受试者工作特征曲线(receiver-operating characteristic,ROC)分析血浆Wnt9b表达对溃疡性结肠炎和克罗恩病的鉴别诊断价值。结果溃疡性结肠炎患者血浆Wnt9b水平显著高于正常对照者(P=0.0324)和克罗恩病患者(P=0.0217),而克罗恩病患者血浆Wnt9b与正常对照者无显著差异(P=0.5919)。但是,溃疡性结肠炎患者血浆Wnt9b水平与内镜下疾病活动程度无显著相关性(Spearmanr=-0.2360,P=0.1102)。ROC曲线分析表明,血浆Wnt9b表达水平在区分溃疡性结肠炎和克罗恩病中具有显著意义(AUC=0.633,P=0.0228)。结论溃疡性结肠炎患者血浆Wnt9b表达水平增高,对于鉴别溃疡性结肠炎患者和克罗恩病患者具有一定意义。     

炎症性肠病患者外周血单个核细胞和血浆中肿瘤坏死因子受体相关因子-6的激活

目的探讨肿瘤坏死因子受体相关因子-6（tumor necrosis factor receptor—associated factor-6,TRAF-6）在炎症性肠病患者外周血单个核细胞和血浆的表达,及其与内镜下疾病活动性的相关性。方法应用酶联免疫吸附试验（ELISA）分析炎症性肠病患者和正常对照者血浆中TRAF-6蛋白的表达,SYBR—green real time PCR方法分析炎症性肠病患者和正常对照者外周血单个核细胞中TRAF-6 mRNA的表达。数据处理使用Graph Pad Prism 5。结果克罗恩病患者（P=0．000）和溃疡性结肠炎患者（P=0．000）血浆TRAF-6水平显著高于正常对照者,但是克罗恩病患者（r=-0．114,P=0．377）以及溃疡性结肠炎患者（r=0．044,P=0．727）血浆TRAF-6表达水平和内镜下疾病活动指数均无显著的相关性。克罗恩病患者（P=0．000）和溃疡性结肠炎（P=0．000）患者外周血单个核细胞TRAF-6 mRNA表达均显著高于正常对照者外周血单个核细胞中mRNA的表达。结论炎症性肠病患者血浆和外周血单个核细胞中均存在TRAF-6的激活,但血浆TRAF-6的高表达不能反映内镜下的疾病活动程度。     

Obestatin与Ghrelin在炎症性肠病中的表达及临床价值

目的研究炎症性肠病患者血浆Obestatin和Ghrelin的表达水平,分析血浆Obestatin和Ghrelin表达水平对炎症性肠病的诊断和鉴别意义。方法应用酶联免疫吸附试验(Enzyme-linked immune-sorbent assay,ELISA)对克罗恩病患者、溃疡性结肠炎患者和正常对照者血浆中Obestatin及Ghrelin的表达进行分析。通过受试者工作特征曲线(receiver-operating characteristic,ROC)观察血浆Obestatin、Ghrelin水平及Obestatin/Ghrelin比值在克罗恩病和溃疡性结肠炎的诊断和鉴别价值,数据处理使用GraphPad Prism 5。结果溃疡性结肠炎患者(P<0.0001)和克罗恩病患者(P=0.0001)血浆Obestatin水平均显著高于正常对照者,并且溃疡性结肠炎患者血浆Obestatin水平显著高于克罗恩病患者(P=0.0003)。溃疡性结肠炎患者(P=0.0279)和克罗恩病患者(P=0.0192)血浆Ghrelin水平均显著高于正常对照者,但是溃疡性结肠炎患者和克罗恩病患者间血浆Ghrelin水平无显著性差异(P=0.9331)。溃疡性结肠炎患者血浆Ghrelin/Obestatin比值显著低于正常对照者(P=0.0487),但是克罗恩病患者血浆Ghrelin/Obestatin比值与溃疡性结肠炎患者(P=0.1076)和正常对照者(P=0.8136)无显著性差异。血浆Obestatin水平对于区分溃疡性结肠炎患者和正常对照者(AUC=0.8791,P<0.0001)、克罗恩病患者和正常对照者(AUC=0.7317,P=0.0001)以及溃疡性结肠炎和克罗恩病患者(AUC=0.7340,P=0.0001)具有显著的鉴别诊断价值。血浆Ghrelin水平对于区分克罗恩病患者和正常对照者具有显著的诊断价值(AUC=0.6660,P=0.0059)。但是,血浆Ghrelin/Obestatin比值对于区分溃疡性结肠炎和正常对照者无显著的鉴别诊断价值(AUC=0.5608,P=0.2923)。结论溃疡性结肠炎和克罗恩病患者血浆Obestatin及Ghrelin水平增高,综合评估溃疡性结肠炎和克罗恩病患者血浆Obestatin、Ghrelin以及Ghrelin/Obestatin比值对疾病的诊断和鉴别有一定意义。     

炎症性肠病患者CD27-CD70共刺激途径的激活研究

目的 探讨CD27-CD70共刺激途径在炎症性肠病患者外周循环和肠黏膜中的表达,比较炎症性肠病患者CD27-CD70表达与正常对照者间的差异.方法 共纳入62例克罗恩病(CD)、64例溃疡性结肠炎(UC)患者和56名正常对照者.应用酶联免疫吸附试验分析炎症性肠病患者和正常对照者血浆中CD27-CD70蛋白的表达;SYBR-green实时PCR法分析炎症性肠病患者和正常对照者外周血单个核细胞中CD27-CD70 mRNA的表达;免疫组化法分析炎症性肠病患者和正常对照者肠黏膜组织CD27-CD70蛋白的表达.结果 CD和UC患者血浆中CD27-CD70的表达均显著高于正常对照者(P值均<0.05).ROC曲线的分析表明,CD27-CD70对区分CD患者和正常对照者以及区分UC患者和正常对照者具有显著的诊断价值(P值均<0.05).CD患者血浆中CD27和CD70水平与内镜下疾病活动性(EDAI)无关(r值分别=0.055和0.024,P值分别为0.673和0.852),且UC患者血浆中CD27和CD70水平与EDAI无关(r值分别=0.077和0.021,P值分别为0.547和0.869).CD患者和UC患者外周血单个核细胞CD27和CD70 mRNA表达均显著高于正常对照者外周血单个核细胞中mRNA的表达(P值均=0.000).免疫组化实验表明CD患者和UC患者肠黏膜组织CD27和CD70的表达均显著高于正常对照者(P值均=0.000).结论 炎症性肠病患者血浆、外周血单个核细胞和肠黏膜中均存在CD27-CD70途径的激活,但血浆中CD27-CD70的水平不能反映内镜下疾病活动程度.选择性干预CD27-CD70共刺激通路可能成为缓解或减轻炎症性肠病进程的有益尝试.     

炎症性肠病患者红细胞指数和血红蛋白的变化及其与疾病活动性的关系

目的 评价炎症性肠病患者及正常对照者之间红细胞指数和血红蛋白的差异及其与疾病活动性的关系.方法 队列研究271例炎症性肠病患者和正常对照者的红细胞指数和血红蛋白,分析红细胞指数和血红蛋白的改变和炎症活动性的关系.结果 克罗恩病患者血红蛋白浓度(P<0.01)、平均红细胞容积(P<0.05)、平均红细胞血红蛋白含量(P<0.01)和平均红细胞血红蛋白浓度(P<0.01)显著低于正常对照组;溃疡性结肠炎患者血红蛋门浓度和平均红细胞血红蛋白浓度显著低于正常对照组(P<0.01).相关分析表明,克罗恩病患者的血红蛋白浓度和克罗恩病活动指数(rs=-0.364,P=0.001)及红细胞沉降率(rs=-0.360,P=0.003)呈显著负相关;溃疡性结肠炎患者的血红蛋白浓度和红细胞沉降率呈显著负相关(rs=-0.565,P<0.001).结论 炎症性肠病患者的红细胞指数和血红蛋白发牛变化,其中血红蛋白浓度的变化和疾病的活动性呈负性相关.     

炎症性肠病患者CD40-CD154共刺激途径的激活及其与内镜下疾病活动程度的相关性研究

目的探讨CD40-CD154共刺激途径在炎症性肠病患者外周循环和肠黏膜中的表达,比较炎症性肠病患者CD40-CD154表达和正常对照者的差异,分析CD40-CD154表达与内镜下疾病活动性的相关性。方法研究对象为克罗恩病患者62例、溃疡性结肠炎患者64例和正常对照者56例。对炎症性肠病患者和正常对照者,分别应用酶联免疫吸附试验（ELISA）、SYBR—green real time PCR方法、免疫组化法,分析血浆中、外周血单个核细胞中、肠黏膜组织中CD40-CD154的表达情况。结果克罗恩病、溃疡性结肠炎患者血浆、外周血单个核细胞及肠黏膜组织中,CD40和CD154的表达均显著高于正常对照者（P均〈0．05）,但外周循环和肠黏膜中CD40及CD154的表达和内镜下疾病活动性无关（P均〉0．05）。结论炎症性肠病患者血浆、外周血单个核细胞和肠黏膜中均存在CD40-CD154途径的激活,但CD40-CD154的高表达不能反映内镜下疾病活动程度。     

炎症性肠病患者肠黏膜炎症和非炎症组织CD27的激活表达

目的比较炎症性肠病患者肠黏膜炎症组织、非炎症组织及正常对照者肠黏膜CD27激活表达的差异,探讨CD27激活表达在炎症性肠病发病中的意义。方法共纳入32例克罗恩病患者、41例溃疡性结肠炎患者及40例正常对照者。分别应用West-ern blot试验和SYBR-green real time PCR方法分析炎症性肠病患者肠黏膜炎症组织、非炎症组织及正常对照者肠黏膜CD27蛋白及其mRNA的表达。数据处理使用GraphPad Prism 5软件。结果克罗恩病和溃疡性结肠炎患者肠黏膜炎症组织CD27蛋白及其mRNA表达均显著高于非炎症组织及正常对照组织(P均0.01);克罗恩病患者肠黏膜非炎症组织CD27蛋白及其mRNA表达显著高于正常对照组织(P=0.000);溃疡性结肠炎患者肠黏膜非炎症组织CD27蛋白表达显著高于正常对照组织(P=0.000)。结论炎症性肠病患者肠黏膜组织中存在CD27的激活表达,这种激活效应不仅出现在内镜表现为炎症性肠病的炎症组织中,甚至出现在炎症性肠病患者内镜表现为正常的肠黏膜中,CD27的激活表达是炎症性肠病发病的早期事件。     

炎症性肠病血浆Prickle1水平的鉴别意义

目的 研究炎症性肠病患者血浆Prickle1水平对于鉴别诊断的价值.方法 应用酶联免疫吸附试验(Enzyme-Linked ImmunoSorbent Assay,ELISA)分析克罗恩病患者、溃疡性结肠炎患者和正常对照者血浆中Prickle1蛋白的表达.受试者工作特征曲线(receiver-operating cha...     

炎症性肠病患者外周血TRAF-5表达及与内镜下疾病活动性的相关性

目的 探讨肿瘤坏死因子受体相关因子-5(tumor necrosis factor receptor-associated factor-5,TRAF-5)在炎症性肠病患者外周血单个核细胞和血浆的表达,比较炎症性肠病患者TRAF-5表达和正常对照者的差异,分析血浆TRAF-5表达与内镜下疾病活动性的相关性.方法 应用酶...     

血常规检查对炎症性肠病活动性判断价值

目的 探讨血常规检查能否作为国人活动性炎症性肠病的评价方法.方法 112例炎症性肠病患者和58例健康人纳入研究.所有患者均进行血常规、C反应蛋白和血沉检测.克罗恩病和溃疡性结肠炎分别依据克罗恩病疾病活动指数和Truelove-witts标准进行疾病活动状态的评价.结果 活动期克罗恩病的血红蛋白、红细胞压积、平均血小板体积明显低于缓解期患者和健康对照,差异有统计学意义（P〈0.05）,而红细胞体积分布宽度、白细胞、中性粒细胞、血小板计数则高于缓解期和健康对照,差异有统计学意义（P〈0.05）.活动期溃疡性结肠炎的血红蛋白、红细胞压积、平均血小板体积亦显著低于缓解期和健康对照,差异有统计学意义（P〈0.05）,而血小板计数高于缓解期患者,差异有统计学意义（P〈0.05）,红细胞体积分布宽度、白细胞计数高于健康对照,差异有统计学意义（P〈0.05）.白细胞、血小板计数与血沉、C反应蛋白呈正相关性（P〈0.05）,而平均血小板体积与血沉、C反应蛋白呈负相关性（P〈0.05）.结论 血常规的多项指标随疾病活动状态改变而变化,并与目前公认的反应炎症指标呈明显相关性,提示血常规可以作为判断炎症性肠病活动度的方法.     

Plasma polyunsaturated fatty acid pattern in active inflammatory bowel disease.

Plasma fatty acid patterns were assessed by gas liquid chromatography in 73 patients with active inflammatory bowel disease and 107 healthy controls. The influence of the disease activity on fatty acid profile was also investigated. Plasma fatty acid patterns in patients with ulcerative colitis and Crohn's disease were similar. Plasma C18:3n3 and C22:6n3 were significantly higher in active ulcerative colitis (p = 0.0143 and p < 0.00001 respectively) and in Crohn's disease (p < 0.00001 for both) than in controls, whereas C20:3n6 was significantly lower in patients than in controls, both in ulcerative colitis (p = 0.0001) and in Crohn's disease (p = 0.0041). In more severe disease, plasma polyunsaturated fatty acid concentrations fell with a significant stepwise decrease in the desaturation index (p = 0.0031 in ulcerative colitis and p = 0.0355 in Crohn's disease). Even in patients with severe disease, however, plasma n3 fatty acids (C18:3n3 and C22:6n3) never fell below those of healthy controls. These findings suggest that in active inflammatory bowel disease, an increased biosynthesis might coexist with an increased consumption of polyunsaturated fatty acids. These observations may be of relevance in the pathogenesis of the disease as polyunsaturated fatty acids are involved in tissue eicosanoid synthesis and cellular membrane function, including that of immunocompetent cells. These results also question the rationale of using n3 polyunsaturated fatty acids in the treatment of inflammatory bowel disease.     

Increased levels of circulating platelet derived microparticles in Crohn's disease patients

Objective: Platelet activation is a consistent feature in inflammatory bowel disease. However, the role of circulating platelet derived microparticles (PDMPs) and the effects of disease activity and treatment on their levels has not been clarified yet in this disorder.

Material and methods: Using flow cytometry, we measured platelet derived microparticles and platelet derived microparticles expressing Annexin V in platelet rich plasma from 47 Crohn’s disease and 43 ulcerative colitis patients and 24 healthy controls.

Results: Crohn’s disease patients have greater PDMPs (0.31% ± 0.07% versus 0.14% ± 0.04%, p?=?0.02) and PDMPs expressing Annexin V (27% ± 2.6% versus 14.6% ± 2.7%, p?=?0.002) levels in comparison with healthy controls; however, both microparticles levels are not related with disease activity. Crohn’s disease patients on 5-ASA therapy show lower levels of PDMPs in comparison with those on no 5-ASA (0.30% ± 0.07% versus 0.32% ± 0.09%, p?=?0.048). Ulcerative colitis patients have similar PDMPs and PDMPs expressing Annexin V levels, compared to healthy controls (p?=?0.06 and p?=?0.2, respectively) and there is no correlation of both microparticles expression with disease activity. 5-ASA has no effect on both microparticles levels in ulcerative colitis patients. Anti-TNF-α treatment has no effect on study’s microparticles expression in Crohn’s and ulcerative colitis patients.

Conclusions: Circulating levels of platelet derived microparticles are increased only in Crohn’s patients, but they do not correlate with disease activity. 5-ASA treatment is associated with lower levels of PDMPs only in Crohn’s, while anti-TNF-α treatment does not influence expression of microparticles in inflammatory bowel disease patients.     

Ulcerative Colitis is Associated with a Promoter Polymorphism of Lipopolysaccharide Receptor Gene,CD14

Background: Inflammatory bowel disease (IBD) is a multifactorial disease with a significant genetic background. Evidence is accumulating that molecules such as CD14, which interact with luminal bacterial constituents, are involved in the pathogenesis. It has recently been shown that the T allele of the 5'-flanking region of the CD14 gene at position-159 is related to high expression of CD14. In further exploring the genetic background of IBD, we investigated this novel polymorphism of CD14 gene in patients with ulcerative colitis or Crohn disease. Methods: DNA was obtained from 101 patients with ulcerative colitis, 82 with Crohn disease and 123 healthy controls. All were typed for the promoter polymorphism of the CD14 gene at position-159 by restriction fragment length polymorphism analysis. Serum samples were obtained from 105 healthy controls and serum sCD14 levels were measured. Results: T allele frequencies were 57.4%, 48.2% and 44.7% in ulcerative colitis, Crohn disease and healthy controls, respectively. The T allele and T/T genotype frequencies were significantly higher in ulcerative colitis patients than in healthy controls ( P = 0.0074, OR = 1.67, 95% CI = 1.15-2.42, P = 0.022, OR = 1.96 95% CI: 1.10-3.48, respectively). The sCD14 level was significantly higher in TT genotype populations than CC ( P = 0.0205). Conclusions: The promoter polymorphism of the CD14 gene at -159T plays a significant role in regulating the CD14 expression and is positively associated with ulcerative colitis, and this polymorphism may confer a genetic predisposition to ulcerative colitis. The results also support the concept that bacterial constituents may be involved in the pathogenesis of ulcerative colitis.