慢性乙型肝炎患者外周血单个核细胞Toll样受体3的表达降低

目的 探讨慢性乙型肝炎患者外周血单个核细胞Toll样受体3(TLR3)的表达及其临床意义.方法 分别采集慢性乙型肝炎患者和健康志愿者外周血,荧光定量PCR法检测血清HBV DNA复制水平;使用RT-PCR、流式细胞术以及免疫印迹技术分别检测外周血单个核细胞TLR3的mRNA、蛋白的表达;使用ELISA法检测血清中肿瘤坏死因子α(TNF-α)和干扰素β(IFN-p)水平.结果 慢性乙型肝炎患者外周血单个核细胞中的TLR3表达显著低于健康志愿者,且降低水平与血清HBV DNA复制水平相关;慢性乙型肝炎患者外周血TNF-α、IFN-β浓度显著低于健康志愿者,且降低的水平与血清HBV DNA复制水平相关.结论 慢性乙型肝炎患者外周血单个核细胞TLR3的表达与乙肝病毒的复制水平相关.     

哮喘患者外周血单个核细胞IL-5、IL-3 mRNA表达的研究

嗜酸细胞（ＥＯＳ）是哮喘慢性炎症中的关键效应细胞。ＩＬ５、ＩＬ３能促进ＥＯＳ在骨髓的分化、成熟,使机体的ＥＯＳ产生增多,并促使ＥＯＳ在支气管肺组织的聚集及活化。哮喘患者外周血、支气管粘膜、支气管肺泡灌洗液（ＢＡＬＦ）中ＩＬ５明显升高［１］。ＩＬ３对ＥＯＳ的作用较ＩＬ５弱,它在哮喘发病机理中的作用仍有争议。本文通过对哮喘患者ＰＢＭＣＩＬ５ｍＲＮＡ、ＩＬ３ｍＲＮＡ表达水平的研究,探讨其在哮喘发病中的作用。１　材料与方法１．１　研究对象　哮喘组：哮喘患者１３例,男８例,女５例,平均年龄３…     

慢性乙型肝炎患者外周血单个核细胞中IL—18表达水平

目的探讨白细胞介素 18(IL- 18)在乙型肝炎病毒感染中的作用。方法应用流式细胞免疫学方法 ,对 30例慢性乙型肝炎活动期、缓解期 ,15例 HBS Ag阳性无症状携带者 ,10例正常对照外周血单个核细胞 (PBMC) IL- 18的表达进行检测。结果无症状携带者表达最低 ,慢性乙型肝炎缓解期低于正常对照 (P<0 .0 1) ,活动期与正常对照无显著差异 (P=0 .2 5 )。活动期 IL- 18的表达与肝组织炎症活动度有关 (P<0 .0 1) ,与血清 AL T水平呈正相关 (r=0 .6 3,P<0 .0 1)。结论 IL- 18与慢性乙型肝炎病情的活动相关 ,与肝组织炎症程度相关     

天疱疮患者外周血单个核细胞瘦素受体mRNA的表达研究

瘦素受体主要分为长型瘦素受体(OB-Rb)和短型瘦素受体(OB-Ra)。我们曾发现天疱疮患者血清瘦素水平增高及可溶性瘦素受体水平下降。为进一步探讨瘦素受体在转录水平上是否存在异常,采用RT-PCR方法对天疱疮患者外周血单个核细胞(PBMC)OB-Ra和OB-Rb mRNA表达进行了检测,现将结果报告如下。35例天疱疮患者为我科2002年至2005年门诊/病房住院患者,年龄22～70     

慢性乙型肝炎患者外周血单个核细胞基因表达谱的研究

目的 分析慢性乙型肝炎患者外周血单个核细胞差异表达基因，探索慢性乙型肝炎形成的分子机制。方法 应用含14000条人体cDNA的微阵列芯片和来自外周血单个核细胞的标记cDNA，分析了10例慢性乙型肝炎患者和10例健康人基因表达谱。通过应用GenePix 4000B扫描仪和ImaGene3．0分析软件比较cy5标记的慢性乙型肝炎来源cDNA与Cy3标记的健康人来源cDNA的杂交结果，获得个体基因的相对表达比值。结果 在分析的14000条基因中，差异表达的基因有92条，占0．66％。其中51条基因表达水平显著上调，41条基因表达水平显著下调。这些差异表达的基因主要为细胞信号转导，细胞周期和代谢，凋亡及炎症相关类基因。结论 在乙型肝炎病毒致慢性乙型肝炎过程中，涉及到了众多基因的差异表达，为进一步阐明慢性乙型肝炎形成的分子机制提供基础。     

慢性乙型肝炎患者外周血单个核细胞TLR2 mRNA表达与IFN-γ及IL-4表达相关性分析

Toll样受体2（Toll-like receptor，TLR2）是一种模式识别受体（Pattern recognision receptors，PRRs），广泛分布于各类免疫细胞。我们检测慢性乙型肝炎患者外周血单个核细胞TLR2 mRNA的表达，用流式细胞术检测外周血CD3^＋ CD8^- T细胞内IFN-γ和IL-4水平，反映Th1、Th2细胞数量，     

TLR4在慢性重型肝炎患者中的表达及意义

Toll样受体4（TLR4）是细胞壁脂多糖（LPS）的特异性受体，可通过特定的细胞信号转导途径介导细胞免疫，以造成机体的损伤。本研究通过检测慢性重型肝炎患者外周血单个核细胞（淋巴细胞、单核细胞）表面的TLR4表达水平，探讨其在慢性重型肝炎中的意义及作用机制。     

2型糖尿病合并颈动脉粥样硬化患者外周血单个核细胞凋亡相关斑点样蛋白mRNA的表达

目的:分析2型糖尿病(T2DM)合并颈动脉粥样硬化(CAS)患者外周血单个核细胞(PBMCs)中衔接蛋白凋亡相关斑点样蛋白(ASC)mRNA的表达及作用。方法:根据华盛顿大学CAS斑块超声分级标准将107例T2DM患者分为单纯T2DM组(n=26)、T2DM轻度斑块组(n=32)、T2DM中度斑块组(n=38)和T2DM重度斑块组(n=11)。另选非T2DM的CAS患者作为单纯CAS组(n=35),以及体检健康者作为正常对照组(n=35)。采用实时荧光定量聚合酶链反应(RT-FQ-PCR)技术检测各组PBMCs中ASC mRNA表达水平。统计分析各组差异及ASC mRNA水平与CAS斑块严重程度的关系。结果:各病例组ASC mRNA表达水平显著高于正常对照组(P0.05),T2DM合并CAS组ASC mRNA表达水平显著高于单纯CAS组(P0.01);ASC mRNA表达水平轻度斑块组中度斑块组重度斑块组,即ASC mRNA表达水平与T2DM患者CAS斑块程度呈明显负相关(r=-0.43,P0.05)。结论:ASC mRNA表达增加可能是T2DM合并AS的发病因素和CAS斑块活跃性的指征。     

系统性红斑狼疮患者外周血单个核细胞中白细胞介素-10mRNA表达的研究

目的 探讨白细胞介素(IL-10)在系统性红斑狼疮(SLE)中的作用。方法 采用逆转录多聚酶链反应(RT-PCR)及酶联免疫吸附法(ELISA)测定40例SLE患者和20例正常对照组外周血单核细胞(PBMC)IL-10mRNA表达及IL-10自发分泌水平。结果 SLE患者PBMC自发分泌IL-10水平及其IL-10mRNA表达水平均显著高于正常对照组(P<0.01),其中SLE活动期明显高于非活动期(P<0.01),而非活动期又明显高于正常对照组(P<0.01)。结论 IL-10在SLE发病中起重要作用,PBMC分泌IL-10水平对SLE诊断和病情活动性监测有重要临床意义,拮抗SLE患者体内IL-10水平,将为SLE治疗开辟一条新途径。     

Spontaneous CD30 mRNA expression in peripheral blood mononuclear cells from atopic patients with high IgE serum levels

CD30 is a surface molecule which can be expressed by normal B and T lymphocytes. Our study focused on the CD30 expression and release compared with IL-4 expression as well as CD23-α/β in peripheral blood mononuclear cells (PBMC) from atopic subjects and controls. Data showed a lack of CD30 mRNA expression in the PBMC of control subjects, while it was significantly expressed in those of 6/11 atopic patients. No substantial amounts of spontaneous soluble CD30 (sCD30) could be detected by ELISA in both atopic and control groups. Interestingly, CD30 mRNA expression in PBMC of allergic patients was positively correlated with IgE serum levels (r = 0·79, P = 0·003). Studies on purified B cells showed that CD30 was expressed mainly in CD19⁺B cells of allergic patients. These data suggest highly a potential functional significance of the CD30 molecule in IgE response during allergic diseases.     

原发性胆汁性肝硬化患者外周血单个核细胞中Tim-3 mRNA表达增高及其意义

为研究Tim-3是否参与了原发性胆汁性肝硬化(PBC)的发病机制,我们采用实时荧光定量逆转录-聚合酶链反应(RT-PCR)技术检测了38例PBC患者及30例健康者外周血单个核细胞(PBMC)中Tim-3mRNA的相对表达量,并分析Tim-3mRNA表达与PBC患者Mayo危险评分和碱性磷酸酶(ALP)之间的关系。结果表明,PBC患者外周血PBMC中Tim-3mRNA表达较健康对照组明显增高(P<0.01),且与Mayo危险评分呈正相关(r2=0.31,P<0.01),与血清ALP水平呈负相关关系(r2=0.37,P<0.01)。本研究表明Tim-3可能参与了PBC的发病机制,同时还是PBC的潜在标志物。     

Graves病患者外周血单个核细胞上催乳素受体mRNA的表达

目的:了解弥漫性毒性甲状腺肿(Graves disease,GD)患者外周血单个核细胞(peripheral blood mononuclear cells,PBMC)上催乳素受体(prolactin receptor,PRLR)mRNA表达及血清催乳素(prolactin,PRL)水平的变化。方法:选取新诊断或未治疗GD患者为病例组(GD组,19例),健康体检者为正常对照组(NC组,12例);测定入选者PBMC上PRLR mRNA表达及血清PRL水平。结果:1)GD组及NC组PBMC上均有PRLR表达,GD组患者PRLR表达量明显高于NC组(P<0.05);2)GD组患者血清PRL水平较NC组轻度增高,但差异无统计学意义(P>0.05)。结论:GD患者PBMC的PRLR mRNA表达增加,PRL可能参与了GD的自身免疫过程。     

Cytokine gene expression in peripheral blood mononuclear cells (PBMC) from patients with pharmacologically treated cystic echinococcosis

The aim of the study was to assess the role of the complement system in Staphylococcus aureus arthritis and septicaemia. The murine model of haematogenously acquired septic arthritis was used, injecting intravenously toxic shock syndrome toxin-1 (TSST-1), producing S. aureus LS-1. Complement was depleted using cobra venom factor (CVF). Evaluation of arthritis was performed clinically and histopathologically. In addition, the effect of complement depletion on the phagocytic activity of leucocytes was assessed in vivo and in vitro. Six days after inoculation of S. aureus the prevalence of arthritis in decomplemented mice was three-fold higher than that in controls (91% versus 25%). The clinical severity of arthritis at the end of the experiment, expressed as arthritic index, was 7.3 and 1.9, respectively. These findings were confirmed by histological index of synovitis as well as of cartilage and/or bone destruction being significantly higher in decomplemented mice than in controls (9.8 ± 1.7 versus 4.9 ± 1.2, P < 0.05; and 7.9 ± 1.7 versus 3.0 ± 0.9, P < 0.05, respectively). Also, the septicaemia-induced mortality was clearly higher in decomplemented mice compared with the controls. CVF treatment significantly reduced in vivo polymorphonuclear cell-dependent inflammation induced by subcutaneous injection of olive oil and mirroring the capacity of polymorphonuclear cells (PMNC) to migrate and/or extravasate. Besides, the decomplementation procedure significantly impaired phagocytic activity of peripheral blood leucocytes in vitro, since the number of phagocytes being able to ingest bacteria decreased by 50% when the cells were maintained in decomplemented serum compared with those in intact serum. The conclusion is that complement depletion aggravates the clinical course of S. aureus arthritis and septicaemia, possibly by a combination of decreased migration/extravasation of PMNC and an impairment of phagocytosis.     

Quantitation of hepatitis C virus in liver and peripheral blood mononuclear cells from patients with chronic hepatitis C virus infection

Since the natural history of hepatitis C virus-associated liver disease and the therapeutic responsiveness might vary according to liver and blood mononuclear cells viral levels, it may be important to quantitate viral RNA in liver, blood mononuclear cells and serum, and to compare these data with genotype, biochemical and histologic data. A polymerase chain reaction-based assay available for serum hepatitis C virus RNA quantitation has been optimized to quantitate viral genomes in liver and peripheral blood mononuclear cells from 47 chronic hepatitis C patients. The procedure permitted hepatitis C virus RNA quantitation in freshly isolated mononuclear cells and in total RNA extracted from frozen mononuclear cells and liver tissue. The intrahepatic viral amount (median: 2.6 × 10³ copies/μg RNA; range: 0 to 3.6 × 10⁴ copies/μg RNA) correlated significantly with the hepatitis C virus RNA concentration in serum (r = 0.76, P < .001) but not in mononuclear cells. Viral RNA concentrations in liver (P < .001), serum (P < 0.01) and PBMC (P < 0.05) were significantly higher in hepatitis C virus genotype 1 patients (essentially type 1b) than in non-1 type cases, but were unrelated to biochemical or histologic indexes of disease activity. In conclusion, the optimized assay permit HCV RNA quantitation in liver and peripheral blood mononuclear cells, suggesting that serum viral level is an accurate measurement of intrahepatic viral burden. J. Med. Virol. 54:265–270, 1998. © 1998 Wiley-Liss, Inc.