干扰素诱导蛋白44基因与系统性红斑狼疮的相关性研究

目的 探讨系统性红斑狼疮(SLE)患者外周血白细胞干扰素诱导蛋白 44(IFI44)基因实时定量表达水平与SLE临床表现及病情活动的相关性.方法 收集100例SLE患者,40例非SLE其他自身免疫性疾病患者,40名健康对照人群的临床资料,抽提外周血总RNA并逆转录成eDNA,运用SYBRgreen dve Ⅰ实时定量聚合酶链反应(RT-PCR)检测患者和对照组的IFI44基因定量表达水平,并对其与各临床指标及病情活动度的相关性进行分析.数据分析采用方差分析,采用Pearson及Spearman检验进行相关性分析.结果 ①SLE患者组的IFI44拷贝数26.8±5.3明显高于非SLE组7.4±2.7(P=0.0012)和健康对照组5.2±2.0(P=0.005);而非SLE患者组与健康对照组差异无统计学意义.②SLE重度活动组患者IFI44表达量63.1±22.4明显高于非活动组9.2±1.8(P=0.000)和轻度活动组患者28.0±7.2(P=0.015).③SLE患者组的IFI44拷贝数与SLEDAI积分之间呈正相关(r=0.38,P=0.000),与尿蛋白定量(24 h)也呈正相关(r=0.42,P=0.000).结论 IFI44基因在SLE患者中有明显表达上调现象;检测IFI44的表达水平有助于判断SLE患者病情活动状况.

Abstract：

Objective To investigate the expression of interferon-induced protein 44 (IFI44) gene in the leukocytes of the peripheral blood samples from patients with systemic lupus erythematosus (SLE), and to evaluate the relationship between the expression level and disease activity. Methods Mononuclear cells in the peripheral blood samples from 100 SLE patients were compared with those of 40 disease controls and 40 healthy donors (HD) and the expression of the IFI44 was evaluated by quantitative real-time PCR.Comparisons between groups were performed with ANOVA, and the correlation analysis between the level of expression was higher in SLE patients than disease controls and healthy donors (26.8±5.3, 7.4±2.7, 5.2±2.0,respectively) (P=0.0012, P=0.005), but no difference was found between disease controls and healthy donors. Mild disease activity and the SLE patients with stable disease (63.1±22.4, 28.0±7.2, 9.2±1.8, respectively)and 24 hours urine protein level (r=0.42, P=0.000). Conclusion IFI44 is demonstrated to be highly expressed in SLE patients. The level of IFI44 may be a promising candidate biomarker for identifying SLE activity.     

羟氯喹抑制紫外线诱导的系统性红斑狼疮CD4+T细胞白细胞介素-10和干扰素-γ的表达

目的 研究紫外线对系统性红斑狼疮(SLE)CD4+T细胞因子的影响和羟氯喹的抑制作用.方法 选择SLE 30例,健康对照10名.磁珠分选SLE患者和健康人的CD4+T细胞,紫外线311 nm窄谱中波紫外线暴露,加入羟氯喹共培养,酶联免疫吸附试验(ELISA)检测培养上清白细胞介素(IL)-10和干扰素-γ的表达水平.采用t检验进行统计学分析.结果 SLE患者CD4+T细胞IL-10表达高于健康对照[(27±4)和(18±3) pg/ml,P=0.011];经45、100 mJ/cm2紫外线暴露后,SLE活动患者CD4+T细胞IL-10表达升高[(27±4)和(77±42) pg/ml,(40±18)和(77±42) pg/ml,P=0.022,P=0.048],经100 mJ/cm2紫外线暴露后,活动患者CD4+T细胞IL-10表达高于稳定患者[(77±42)和(24±4)pg/ml,P=0.029];羟氯喹降低SLE活动患者CD4+T细胞IL-10和干扰素-γ表达[(2.6±4.0)和(17.9±2.3)pg/ml,P=0.018,P=-0.017)];羟氯喹降低经45,100 mJ/cm2紫外线暴露后SLE活动患者T细胞IL-10表达[(40±18)和(22±6)pg/ml,(77±42)和(21±5) pg/ml,P=0.037,P=0.04];羟氯喹降低经100 mJ/cm2紫外线暴露的SLE活动和稳定患者T细胞干扰素-γ表达[(18±3)和(13±14) pg/ml,(19±7)和(12±5) pg/ml,P=0.013,P=0.049].结论 紫外线加重SLE患者体内Th1/Th2细胞因子的比例失衡;羟氯喹抑制了紫外线诱发SLE患者干扰素-γ和IL-10的表达.

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Objective To explore the role of hydroxychloroquine (HCQ) in ultraviolet B (UVB)- induced expression of interleukin (IL)-10 and interferon (IFN)-γ from CD4+T cells in patients with systemic lupus erythematosus (SLE). Methods Thirty patients with SLE and 10 healthy controls were enrolled in the study. CD4+ T cells were isolated using magnetic beads from SLE patients and healthy controls. HCQ was added in culture media before and after irradiation with UVB 311 nm narrow band ultraviolet B (NB-UVB). The levels of IL-10 and IFN-γ in the supernatant were detected with enzyme-linked immunosorbent (ELISA). Comparisons between groups were performed by t-test. Results The level of IL-10 was higher in SLE patients [(27±4) pg/ml] than that in healthy controls [(18±3) pg/ml, P=0.011]. After exposure of CD4+T cells to UVB in 45 or 100 mJ/cm2 dosages, the level of IL-10 was increased significantly in patients with active disease (P=0.022, P=0.048). After exposure of CD4+T cells to UVB in 100 mJ/cm2 dosages, the levels of IL-10 was higher in patients with active disease [(77±42) pg/ml] than patients with stable disease [(24± 4) pg/ml, P=0.029]. When CD4+ T cell were cultured with HCQ, IL-10 and IFN-γ levels in patients with active disease [(2.6±4.0), (17.5±2.3) pg/ml] were decreased significantly (P=0.018, P=0.017). HCQ reversed UVB-induced IL-10 expression in active SLE patients after exposure of CD4+T cells to UVB in 45 or 100 mJ/cm2 dosages (P=0.037, P=0.04). HCQ also reversed UVB-induced IFN-7 expression in active SLE patients and stable SLE patients after exposure to CD4+T cells with UVB in 100 mJ/cm2 dosages (P=0.013, P= 0.049). Conclusion UVB can aggravate the imbalance of Th1 and Th2 cytokines. HCQ inhibits UVB-induced IL-10 and IFN-7 expression of CD4+T cells in patients with SLE, especially in patients with active disease.     

Th17细胞和调节性T细胞在系统性红斑狼疮患者中的研究

目的 研究系统性红斑狼疮(SLE)患者外周血Th17细胞、调节性T细胞及联系两者的细胞因子白细胞介素(IL)-6的变化及其与病情活动的相关性,探讨Th17细胞、调节性T细胞在SLE发病机制中的作用.方法 收集103例SLE患者及28名健康者,SLE活动性的判断采用SLE疾病活动指数(SLEDAI)评分方法,其中非活动组(SLEDAI≤9分)患者37例,活动组(SLEDAI＞9分)患者66例.用四色分选流式细胞仪检测外周血Th17细胞、调节性T细胞百分数,用流式细胞仪微球捕获芯片技术(CBA)检测血清IL-6浓度,并分析其与病情活动的相关性.统计学处理采用t检验、秩和检验和Spearman相关分析.结果 ①SLE患者组Th17细胞[(1.2±1.1)%]、IL-6[(35±92)pg/ml]显著高于健康对照组[(0.6±0.4)%、(6±3)pg/ml],而调节性T细胞[(1.6±1.2)%]显著低于健康对照组[(2.6±1.8)%].②SLE活动组Th17细胞[(1.6±1.7)%]显著高于SLE非活动组[(1.0±0.7)%]与健康对照组(P均＜0.05),SLE活动组调节性T细胞[(1.5±1.3)%]显著低于SLE非活动组[(2.1±2.0)%]与健康对照组(P均＜0.05),SLE活动组Th17/调节性T细胞(0.68±0.34)显著高于SLE非活动组(0.24±0.20)与健康对照组(0.13±0.09,P均＜0.05),SLE活动组IL-6[(41±22) pg/ml]显著高于SLE非活动组[(32±28) pg/ml]与健康对照组(P均＜0.05);SLE非活动组与健康对照组之间Th17细胞、调节性T细胞、Th17/调节性T细胞、IL-6差异均无统计学意义(P＞0.05).③Th17细胞百分数与SLEDAI呈正相关,调节性T细胞百分数与SLEDAI呈负相关,Th17/调节性T细胞与SLEDAI呈正相关,IL-6浓度与SLEDAI评分之间呈正相关,Th17细胞与调节性T细胞呈负相关.结论 SLE患者外周血Th17细胞、调节性T细胞及IL-6浓度较健康对照组显著增高,并与疾病活动性密切相关,说明Th17细胞、调节性T细胞可能在SLE的发生、发展中起重要作用.

Abstract：

Objective To study the changes of Th17 cell, regulatory T cell (Treg) and interleukin (IL)-6 in the peripheral blood of patients with systemic lupus erythematosus (SLE) and their relationship with disease activity. Methods Percentage of Th17 and Treg in the peripheral blood of 103 patients with SLE and 28 healthy volunteers were detected by flow cytometry. The concentration of IL-6 in SLE patients and healthy volunteers was detected by cytometric bead array (CBA). The disease activity of SLE was measured by SLEDAI. SLE patients were divided into two groups: stable SLE (SLEDAI≤ 9, n=37) and active SLE (SLEDAI＞9, n= 66). The change of Th17, Treg, IL -6 and their relationship with disease activity were analyzed. Nonparamentric tests, t -test and spearman correlation were used for statistical analysis. Results The percentage of Th17 cells and the concentration of IL-6 in the peripheral blood in patients with SLE was higher than that in normal controls [respectively for (1.2±1.1)%, (35±92) pg/ml and (0.6±0.4)%, (6±3) pg/ml, P＜0.05]. However, the percentage of Treg in patients with SLE was lower than that in normal controls [respectively for (1.6±1.2)%,(2.6±1.8)%, P＜0.05]. The percentage of Th17, Th17/Treg IL-6 level in active SLE patients was higher than those in inactive SLE and those in normal controls (P＜0.05). However, the percentage of Treg in active SLE was lower than that in stable SLE patients and that in normal controls (P＜ 0.05). The percentage of Th17, Th17/Treg and concentration of IL-6 was positively correlated to disease activity(P＜0.05). But the percentage of Treg had negative correlation with the percentage of Th17 and disease activity (P＜0.05). Conclusion Th17, Treg and serum IL-6 in SLE patients are abnormal and they maybe contribute to the pathogenesis of SLE.     

系统性红斑狼疮患者骨髓间充质干细胞凋亡相关研究

目的 探讨系统性红斑狼疮(SLE)患者骨髓间充质干细胞(BMSCs)的凋亡变化及凋亡相关因子的表达.方法 密度梯度离心和贴壁筛选法分离培养SLE患者及健康人骨髓MSCs,末端脱氧核苷酸转移酶介导的dUTP缺口末端标记(TUNEL)法检测细胞凋亡;流式细胞术检测细胞表面Fas、Bcl-2表达水平及Caspase 8活性;实时荧光定量聚合酶链反应(PCR)技术榆测Fas、Bcl-2、Bax、Bcl-w、Caspase 8及凋亡细胞蛋白酶激活因子(Apaf)-1 mRNA表达水平;免疫组织化学染色检测胞质细胞色素C表达水平;统计学采用Mann-Whitnev秩和检验.结果 SLE患者BMSCs凋亡明显高于健康对照组[(64±10)%和(14±9)%,U=0,P<0.05];SLE患者BMSCs抗凋亡因子Bcl-2蛋白表达显著低于健康对照组[(11±9)%和(56±18)%,U=0,P<0.05],其mRNA表达水平同样显著低于健康对照(0.2±0.2和2.4±0.7,U=24.P<0.05);SLE患者BMSCs胞质中细胞色素C表达显著增多[(56±21)%和(16±16)%,U=1,P<0.05].SLE患者BMSCs细胞内Caspase 8活性增强[(49±14)%和(16±12)%,U=0,P<0.05],但基因表达水平与健康对照组比较差异无统计学意义(U=28,P>0.05);SLE患者与健康对照组BMSCs均高表达Fas,差异无统计学意义(U=19,P>0.05).结论 SLE患者BMSCs凋亡增多,可能与Bcl-2表达减少、胞质中细胞色素C表达增多和Caspase 8活性增强,从而激活内源性及外源性凋亡途径相关.

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Objective To investigate the apoptosis of bone marrow mesenchymal stem cells(BMSCs)from systemic lupus erythematosus(SLE)patients and the expression of apoptotic molecules.Methods BMSCs were isolated from bone marrow of SLE patients and normal controls by density eentrifugation and adhesive culture in vitro.The apoptosis of BMSCs were evaluated by TUNEL assay.The expressions of Fas.Bcl-2 and the activity of Caspase 8 were detected by flow cytometry.Real-time PCR technique was used to determine the gene expressions of Fas,Bcl-2,Bax,Bcl-w,Caspase 8 and Apaf-1.Meanwhile,cytochrome C was detected by immunocytochemistry.Statistical analysis was conducted with t-test and Mann-Whitney rank test.Results The percentage of apoptotic BMSCs increased in SLE patients compared with healthy donors[(64±10)%vs [14±9)%,U=0,P<0.05 ].The expression of Bcl-2 in BMSCs of SLE patients was lower than the normal controls at protein leve[(11±9)%vs(56±18)%,U=0,P<0.05 ],and mRNA level(0.2±0.2vs 2.4±0.7,U=24,P<0.05).More cytochrome C positive pellets in the cytosolic fraction could be detected in BMSCs from SLE patients compared with healthy controls [(56±21)%vs (16±16)%,U=1,P<0.05].The activity of Caspase 8 was enhanced[(49±14)%vs(16±12)%,U=0.P<0.05 ],although with no significant difierence at mRNA Ievel.Both groups expressed Fas but with no significant difference (U=19,P>0.05).Conclusion BMSCs from SLE patients undergo more apoptosis,the mechanisms may be associated with the down regulation of Bcl-2,up-regulation of Cytoehrome C in cytoplasm and the activation of Caspase 8,which directs the intrinsic and extrinsic apoptosis pathways.     

系统性红斑狼疮凋亡相关基因Fas sFas

Objective　To investigate the mRNA expression of Fas and sFas genes in SLE patients and their roles in the pathogenesis of SLE.Method　Fifty SLE patients,24 RA patients and 24 normal controls were chosen and the expression of Fas and sFas genes of peripheral white cells were detected by fluorescence-based RT-PCR semi-quantitative method.Results　① mRNA expression of Fas and sFas in SLE patients were significantly higher than that in normal controls (3.2±1.8 vs 2.1±0.6,P＜0.001 and 1.2±0.7 vs 0.58±0.27,P＜0.000 1,respectively),and relevant to activity of SLE,r＝0.521 8,P＝0.007 and r＝0.418 8,P＝0.037).② In RA patients,sFas was higher than that in normal controls (0.9±0.5 vs 0.58±0.27,P＜0.01),but expression of Fas had no statistical difference.Conclusion　The expression of Fas and sFas genes are abnormal in SLE and apoptosis may play certain role in the pathogenesis of SLE.     

系统性红斑狼疮患者外周血CD4+CXCR5+滤泡辅助性T细胞样细胞的变化及糖皮质激素对其的影响

Objective To investigate the frequencies of CD4+CXCR5+T cells in the CD4+T cells of peripheral blood of patients with systemic lupus erythematosus (SLE) and the effect of glucocorticoid on it.Methods Frequencies of CD4+CXCR5+T cell were analyzed by flow cytometry in 45 active,20 inactive SLE patients and 20 healthy controls.Differences between groups and the effect of glucocorticoid were analyzed.Meanwhile, the expression of CXCR5 on CDI9+B cells was analyzed. Independent sample t test was used for statistical analysis between twogroups, ANOVA was applied for data analysis between 3 groups,,nonparameterical Spearman's analysis was used for correlation analysis and repeated measurement ANOVA were used to compare the parameters before and after treatment. Results The percentage of CD4+CXCR5+ in CD4+T cells was increased in patients with SLE compared with healthy controls[(16±7)% vs (12±3)%, P＜0.01].It was increased in patients with active SLE [(18±7)%] compared with healthy controls (P＜0.05) but there was no significant difference between inactive SLE[(11±4)%] and healthy controls(P＞0.05). The percentage in patients with LN was higher than that in patients without LN, but without significant difference[(18±7)%vs (14±7)%, P=0.05 ]. The percentage of CD4+CXCR5+T cells was positively correlated with SLEDAI,the titer of ANA and level of ESR but negatively correlated with the level of C3 (P<0.05 for each).No correlation was found between duration and the levels of CRP and immunoglobulin.. The percentage in patients with high anti-dsDNA group was also higher than that of the low group, but no differences were found between anti-Sm antibody positive and negative groups neither between anti-SSA/SSB antibody positive and negative groups(P＞0.05 for each).The expression level of CXCR5 on CD19+B cells in active SLE patients was lower than that of healthy controls[(85±11)% vs (94±3)%, P＜0.05 ]. The percentages of CD4+CXCR5+T cells in 10 untreated active SLE patients were decreased at day 1,day 3 and day 7 after being treated with dexamethasone (20mg/d) when compared with those before the treatment (P＜0.05 for each), but the percentages of CD19+CXCR5+B cells had no significant change (P＞0.05 for each).Conclusion These results demonstrate that the abnormality of CD4+CXCR5+T cells may play an important role in the pathogenesis of SLE.     

Gastrointestinal hormone abnormalities and G and D cells in functional dyspepsia patients with gastric dysmotility

AIM: To investigate the relationship between gastric dysmotility, gastrointestinal hormone abnormalities, and neuroendocrine cells in gastrointestinal mucosa in patients with functional dyspepsia (FD). METHODS: Gastric emptying was assessed with solid radiopaque markers in 54 FD patients, and the patients were divided into two groups according to the results, one with delayed gastric emptying and the other with normal gastric emptying. Seventeen healthy volunteers acted as normal controls. Fasting and postprandial plasma levels and gastroduodenal mucosal levels of gastrointestinal hormones gastrin, somatostatin (SS) and neurotensin (NT) were measured by radioimmunoassay in all the subjects. G cells (gastrin-producing cells) and D cells (SS-producing cells) in gastric antral mucosa were immunostained with rabbit anti-gastrin polyclonal antibody and rabbit anti-SS polyclonal antibody, respectively, and analyzed quantitatively by computerized image analysis. RESULTS: The postprandial plasma gastrin levels, the fasting and postprandial plasma levels and the gastric and duodenal mucosal levels of NT were significantly higher in the FD patients with delayed gastric emptying than in those with normal gastric emptying and normal controls. The number and gray value of G and D cells and the G cell/D cell number ratio did not differ significantly between normal controls and the FD patients with or without delayed gastric emptying. CONCLUSION: Our findings suggest that the abnormalities of gastrin and NT may play a role in the pathophysiology of gastric dysmotility in FD patients, and the abnormality of postprandial plasma gastrin levels in FD patients with delayed gastric emptying is not related to the changes both in the number and gray value of G cells and in the G cell/D cell number ratio in gastric antral mucosa.     

抗血小板抗体在系统性红斑狼疮血小板减少患者中临床意义的研究

目的 明确抗血小板抗体在系统性红斑狼疮(SLE)血小板减少患者中的临床意义.方法 采用改良抗原捕获酶联免疫吸附试验(ELISA)法检测抗血小板抗体(抗GPⅡb/Ⅲa、GPⅠb/Ⅸ、GPⅠa/Ⅱa、GPⅣ抗体),分别比较治疗前SLE血小板减少与SLE非血小板减少患者抗血小板抗体的阳性率、SLE血小板减少患者治疗前后抗血小板抗体的阳性率、SLE血小板减少治疗前患者病情与抗血小板抗体的关联性.统计方法采用秩和检验和x2检验.结果 治疗前SLE血小板减少组抗GPⅡb/Ⅲa抗体、抗GP Ⅰb,Ⅸ抗体阳性率分别为50%、67%.非血小板减少组阳性率分别为11%、28%,2组间阳性率差异有统计学意义(P＜0.05);治疗后SLE血小板减少组抗GPⅡb/Ⅲa抗体、抗GP Ⅰb/Ⅸ抗体阳性率分别为6%、28%,较治疗前显著降低(P＜0.05);SLE血小板减少组治疗前抗GPⅡb/Ⅲa抗体、抗GP Ⅰb/Ⅸ抗体之间显著关联,该2种抗体均与SLEDAI评分有显著关联性,与抗核抗体、抗双链DNA(dsDNA)抗体、抗中性粒细胞胞质抗体(ANCA)则无显著关联;各组间未检测出抗GPⅣ和GPⅠa/Ⅱa抗体.结论 抗GPⅡb/Ⅲa、GPⅠb/Ⅸ抗体在病情活动SLE血小板减少患者中表达显著升高,与SLE血小板减少病情发生发展和转归相关.

Abstract：

Objective To evaluate the clinical significance of antiplatelet antibody in patients with systemic lupus erythematosus complicated with thrombocytopenia.Methods Antiplatelet antibody (anti-GP Ⅱb/Ⅲa antibody, anti-GP Ⅰb/Ⅸ antibody, anti-GP Ⅰa/Ⅱ a antibody, anti-GP Ⅳ antibody) were detected by modified antigen capture ELISA. The positive rate of antiplatelet antibody between SLE complicated with thrombocytopenia group and without thrombocytopenia group before therapy were compared,and the positive rate of antiplatelet antibody before therapy and after therapy in SLE complicated with thrombocytopenia were compared,and the relevance between antiplatelet antibody and conditions in SLE complicated with thrombocytopenia were analyzed. Rank test and Chi square test were used for statistical analysis. Results The positive rate of anti-GP Ⅱb/Ⅲa antibody and anti-GP Ⅰb/Ⅸ antibody in SLE complicated with thrombocytopenia group before therapy was 50% and 67% respectively, however,the positive rate in SLE without thrombocytopenia group before therapy was 11% and 28% respectively,there was significant difference between the two groups (P＜0.05) and the positive rate of anti-GP Ⅱb/Ⅲa antibody and anti-GP Ⅰb/Ⅸ antibody in SLE complicated with thrombocytopenia group after therapy was 6% and 28% respectively, which was significantly lower than those before therapy (P＜0.05). In SLE complicated with thrombocytopenia group before therapy, there was significant relevance between anti-GP Ⅱb/Ⅲ a antibody and anti-GP[b/Ⅸ antibody, and there was significant relevance between these two antibodies and SLEDAI score,but no significant relevance between these two antibodies and ANA,dsDNA, ANCA. Neither anti-GPⅣ antibody nor anti-GP Ⅰ a/Ⅱ a antibody was detected in patients of this study. Conclusion The positive rate of antiplatelet antibody (anti-GP Ⅱb/Ⅲ a antibody, anti-GP Ⅰb/Ⅸ antibody) is significantly higher in patients with active systemic lupus erythematosus complicated with thrombocytopenia,and these two antibodies are significantly associated with clinical outcomes.     

强直性脊柱炎和类风湿关节炎患者低相对分子质量IgM水平的研究

目的 研究强直性脊柱炎(AS)和类风湿关节炎(RA)患者体内低相对分子质量IgM水平的变化.方法 取AS、RA患者和健康对照人群血清,超滤法分离低相对分子质量IgM,酶联免疫吸附试验测定低相对分子质量IgM比例.采用Mann-Whitney U检验方法进行统计分析.结果 AS和RA患者血清低相对分子质量IgM比例较健康对照明显升高(分别为0.194±0123,0.061±0.026,0.028±0.165);低相对分子质量IgM比例与患者病情活动度无明显相关.结论 低相对分子质量IgM升高可能是AS和RA患者体内体液免疫功能紊乱的表现,但其具体的病理意义尚需进一步研究.

Abstract：

Objective To study the serum levels of low molecule weight IgM (LMW IgM) in ankylosing spondylitis (AS) patients and rheumatoid arthritis (RA) patients and to evaluate the relationship of LMW IgM levels with the disease activities. Methods The levels of LMW IgM and pentameric IgM in AS patients, RA patients and healthy controls were measured with ELISA after separated using ultrafiltration assay. Differences in the percentage of LMW IgM between subject groups were analysed using Mann-Whitney U test. Results The percentages of LMW IgM increased dramatically in AS patients and RA patients compared with healthy controls (0.194 ± 0123, 0.061 ±0.026, 0.028 ±0.165 separately). The LMW IgM percentages were not correlated with the disease activities. Conclusion The increase of LMW IgM indicates humoral immune function abnormality in AS patients and RA. However, the mechanism needs further study.     

高级氧化蛋白产物在系统性红斑狼疮早发动脉粥样硬化中的临床意义

Objective To estimate the degree of oxidative stress and atherosclerosis praecox in patients with systemic lupus erythematosus (SLE), and emphasize on exploring AOPPs' clinical significance in premature atherosclerosis in SLE. Methods The levels of AOPPs, Hey, MDA, SOD, baPMV and CIMT were detected by ELISA and spectropholometry in 44 non-menopausal female SLE patients and 31 healthy middle-aged women respectively, and baPWV. The results were compared with AOPPs of the two groups. Then each group was stratified based on disease duration (≥5 years or <5 years) and the disease activity(active and inactive) in SLE patients. The patients' TC, TG, LDL were analyzed. T test, t' test and Pearson correla-tion were selected. Results The levels of AOPPs, Hcy, MDA in SLE patients were significantly higher than those of the healthy controls (P<0.05). The activities of SOD were lower than controls (P<0.05). The levels of AOPPs, Hcy, MDA, SOD had statistical significance between SLE patients disease duration ≥5 years or <5 years, active or inactive groups. There were two cases with CAP in patients with SLE (more than 5 years disease duration),while there wasnone in healthy controls. The levels of baPWV and CIMT in patients with SLE were higher than healthy controls (P<0.05), and had statistical significance in SLE patients disease duration more than or less than 5 years (P<0.05). The oxidative stress targets (AOPPs, Hey, MDA, SOD) had significant correlation with the level of baPWV and CIMT (P<0.01). The level of serum AOPPs had significant positive correlation with the levels of Hcy, TC, TG and LDL (P<0.01～0.05). Conclusion SLE patients have increased oxidative stress , and significantly higher prevalence of atherosclerosis than healthy controls. The disease duration and oxidative stress play important roles in the duration of atherosclerosis. AOPPs probably involves in the accelerated atherosclerosis of SLE patients. It may be a predictor for SLE complicated with atherosclerosis praecox.     

系统性红斑狼疮患者血浆骨桥蛋白水平与疾病活动性及脏器损害的相关性研究

目的 检测系统性红斑狼疮(SLE)患者血浆中骨桥蛋白(OPN)的水平,分析其与SLE活动性及脏器损害间的关系.方法 选择68例SLE患者和36名健康体检者,采用酶联免疫吸附试验(ELISA)检测其血浆中的OPN水平.记录采血时患者的系统性红斑狼疮疾病活动指数(SLEDAI)、实验室指标等.结果 SLE患者OPN血浆水平明显高于正常对照组[(4.5±2.0)ng/ml与(1.6±0.7)ng/ml,P＜0.01 ].SLE疾病活动组高于非活动组[(5.3±2.0)ng/ml与(3.4±1.3)ng/ml,P＜0.01];SLE患者伴有肾脏损害组高于无肾脏损害组[(5.8±2.1)ng/ml与(3.5±1.3)ng/ml,P＜0.01],有肺间质病变、胃肠道病变和心包炎的高于无脏器损害[(4.8±1.2)、(6.3±1.4)、(5.4±2.6)ng/ml与(3.5+1.3)ng/ml,P＜0.05],抗心磷脂抗体阳性患者OPN水平高于抗心磷脂抗体阴性患者[(5.3±2.4)ng/ml与(4.2±1.7)ng/ml,P＜0.05].OPN血浆水平与SLEDAI呈正相关(r=0.523,P＜0.01),与尿蛋白定量(24 h)呈正相关r=0.403,P=0.001),与补体C3呈负相关r=-0.398,P=0.001),与红细胞沉降率(ESR)、抗dsDNA抗体、抗Sm抗体、IgG、IgA、IgM、球蛋白及关节炎等无相关性(P＞0.05) .结论 OPN可能参与SLE的发病,临床上可作为疾病活动及脏器损伤的观察指标.     

Association of Epstein-Barr virus infection with systemic lupus erythematosus in Taiwan

An association between Epstein-Barr virus (EBV) infection and systemic lupus erythematosus (SLE) has been suggested from previous serologic evidence. Since most adults in Taiwan are EBV-infected, seroepidemiologic studies based on standard assays for EBV are unlikely to dissociate SLE patients and control groups. We reexamine this question by using novel methodologies in which IgA anti-EBV-coded nuclear antigens-1 (EBNA-1) and IgG anti-EBV DNase antibodies were analysed by ELISA, and EBV viral loads were detected by real-time quantitative PCR for 93 adult SLE patients and 370 age-, sex- and living place-matched healthy controls in Taiwan. The specificities of antibodies for extractible nuclear antigens were determined by Western blot. Our results show that IgA anti-EBV EBNA1 antibodies were detectable in 31.2% SLE patients but only in 4.1% of controls (odds ratio [OR] = 10.72, 95% confidence interval [CI] = 5.19-22.35; P < 10(-7)), IgG anti-EBV DNase antibodies were detected in 53.8% SLE patients but only in 12.2% controls (OR = 8.40, 95% CI = 4.87-14.51; P < 10(-7)). EBV DNA was amplifiable from the sera of 41.9% SLE patients but from only 3.24% controls (P < 0.05). A significant association of IgG anti-EBV DNase antibodies with anti-Sm/RNP antibodies was observed (P < 0.005). The higher seroreactivity and higher copy numbers of EBV genome indicated association of EBV infection with SLE in Taiwan.     

High prevalence of immunoglobulin A antibody against Epstein-Barr virus capsid antigen in adult patients with lupus with disease flare: case control studies

OBJECTIVE: Systemic lupus erythematosus (SLE) is a severe autoimmune disease with rare remission and recurrent flare. Epstein-Barr virus (EBV) infection has been reported to be strongly associated with SLE in the United States, but with an inconclusive role in Asia. We investigated the role of EBV infection in patients with SLE in Taiwan, with one of the highest population densities in Asia. METHODS: We conducted case-control studies to test whether EBV infection was associated with adult SLE in Taiwan. In the first study, 36 adults with SLE and 36 sex and age matched controls were enrolled for examination of serum IgG, IgM, and IgA antibody against EBV-virus capsid antigen (EBV-VCA). In the second study, another 36 adult lupus cases and 36 matched controls were enrolled to confirm the high prevalence of IgA antibody against EBV-VCA found in the first study. Further, both groups of SLE patients were combined to analyze the association between the existence of IgA antibody against EBV-VCA and disease activity (determined by SLEDAI score) and disease flare in patients with SLE. RESULTS: In the first study, IgA antibody against EBV-VCA was the only marker with significantly higher prevalence in adults with SLE compared to healthy adults (36.1% vs 5.6%; p < 0.005). In the second study, we confirmed that the prevalence of IgA antibody against EBV-VCA was indeed higher in adults with SLE (38.9% vs 2.8%; p < 0.001). With further analysis (pooling analysis), adult SLE patients with IgA antibody against EBV-VCA had higher disease activity compared to SLE patients without IgA antibody against EBV-VCA (SLEDAI 7.8 +/- 6.6 vs 3.3 +/- 2.1; p < 0.001). SLE patients with flare showed much higher prevalence of IgA antibody against EBV-VCA compared to those without flare (81.3% vs 25.0%; p < 0.001). CONCLUSION: This is the first evidence that IgA antibody against EBV-VCA is strongly associated with disease flare in SLE patients. It suggests that EBV reactivation may contribute toward the disease flare of SLE.     

Anticardiolipin antibodies and lupus anticoagulant in patients treated with different methods of renal replacement therapy in comparison to patients with systemic lupus erythematosus

Summary Antiphospholipid antibodies were found to be associated with certain clinical manifestations such as recurrent venous thrombosis or arterial occlusions in a wide spectrum of immune disorders [6]. We analyzed the plasma concentration of two isotypes (IgG, IgM) of anticardiolipin antibodies (ACA) and lupus anticoagulant (LAC) activity in 84 patients with end-stage renal disease. They were receiving different types of renal replacement therapy and had a high frequency of thrombotic vascular complications. The prevalence of positive tests and the mean ACA concentration obtained in the plasma of renal patients were compared with those in patients with systemic lupus erythematosus (SLE) and in healthy controls. When analyzed as a whole group, renal patients maintained on dialysis (n=45: hemodialysis,n=20; peritoneal dialysis) or with a functioning kidney transplant (n=19) did not differ in mean ACA concentration and LAC activity (n=84, ACA: IgG 10±7 U/ml, IgM 2±1 U/ml, LAC ratio: 1.0±0.2) from healthy subjects (n=50, ACA: IgG 10±3, IgM 2±1 U/ml, LAC ratio: 1.0±0.1) but they had a higher incidence of raised IgG-ACA titers (renal replacement 14% vs. normal controls 4%,p<0.05). No significant correlation was found between thrombotic events and raised ACA or LAC activity in dialysis patients. In contrast, the proportion of SLE patients (n=51) with a raised concentration of ACA was significantly higher (IgG: 69%, IgM: 29%) than that among patients with renal replacement therapy (IgG: 14%, IgM: 4%) or normal controls (IgG: 4%, IgM: 2%,p<0.002). Moreover, recurrent manifestations of thrombosis in SLE were associated with very high IgG-ACA (n=11, IgG 117±91 U/ml) and LAC activity (LAC ratio: 2.4±0.7) in comparison to SLE patients without thrombotic events (n=40, ACA: IgG 23±13). The results of our investigations demonstrate that the pathogenetic role of these phospholipid antibodies in end-stage renal disease is far from established.     

Ro/SSA and La/SSB specific IgA autoantibodies in serum of patients with Sjögren's syndrome and systemic lupus erythematosus

OBJECTIVE: To investigate the occurrence of IgA autoantibodies to Ro 52 kDa, Ro 60 kDa and La antigen in serum of patients with primary Sj?gren's syndrome (pSS) and systemic lupus erythematosus (SLE). METHODS: Recombinant Ro 52 kDa, Ro 60 kDa and La antigens were used to analyse autoantibodies in serum from 25 patients with pSS, 30 patients with SLE and 20 controls using a semiquantitative immunoblotting approach. RESULTS: Among the patients with pSS, 21 (84%) had detectable IgA autoantibodies to Ro 52 kDa, 13 (52%) to Ro 60 kDa and 20 (80%) to La antigen. The corresponding results for the patients with SLE were 22 (73%), 14 (47%) and 20 (67%), respectively. No IgA autoantibodies against the three antigens were detected in 20 normal controls. A comparison of several clinical features with the titres of IgA antibodies to Ro 52 kDa, Ro 60 kDa and La, revealed a significant relation between IgA anti-Ro 52 and IgA anti-La to sicca (p< 0.05). Semiquantitative data suggest that IgG is the dominating antibody to the three antigens followed by IgM > IgA in both SLE and pSS patients. Specificity studies of IgA autoantibodies with different subfragments of Ro 52 kDa and Ro 60 kDa antigens showed that IgA antibodies did not differ from IgG and IgM in their recognition pattern. CONCLUSION: These results suggest that besides IgM and IgG, IgA autoantibodies are also detected at high frequency in patients with pSS and SLE. Further studies are necessary to evaluate the contribution of these IgA autoantibodies to inflammation as well as their diagnostic value.     

系统性红斑狼疮患者体液免疫和ENA酶谱变化及意义

目的　探讨体液免疫和可提取性核抗原 (ENA)酶谱在系统性红斑狼疮 (SL E)稳定期和活动期中的变化及意义。方法　应用散射速率比浊法检测 5 2例 SL E患者 (下称实验组 )以及 2 4例正常对照者 (对照组 )的Ig G、Ig A、Ig M、C3、C4 等水平 ,应用免疫印记技术检测 ENA酶谱。结果　实验组血清 Ig G、Ig A水平明显高于对照组 ,其中活动期 (实验 B组 )血清 Ig G、Ig A、Ig M高于稳定期患者 (实验 A组 )。实验组血清 C3、C4 水平明显低于对照组 ,且实验 B组 C3水平明显低于实验 A组 ,差异有显著性 (P<0 .0 1)。 4 5 .4 % SL E患者抗 SSA、抗 SSB同时阳性 ,抗 ds DNA阳性率为 32 .7%。抗 r RNP和抗 Sm抗体在实验 A、B组的阳性率有显著差异 (P<0 .0 1,<0 .0 5 ) ,其他抗体均无明显差异。结论　 SL E患者行体液免疫指标及 ENA酶谱测定可提示其疾病进展情况。     

Impaired control of the tissue factor pathway of blood coagulation in systemic lupus erythematosus

Thrombosis is a frequent manifestation in patients with systemic lupus erythematosus (SLE), although precise mechanisms remain unclear. This study investigated whether the major physiological trigger of blood coagulation, the tissue factor (TF) pathway, was altered in SLE patients. Furthermore, we investigated potential associations between the TF pathway, the presence of antiphospholipid (APL) antibodies and other abnormalities present in SLE. A total of 101 participants (40 SLE patients and 61 age- and sex-matched controls) were recruited from Tasmania, Australia. Markers of the TF pathway, hypercoagulability, inflammation and endothelial cell damage were measured in plasma. Serum levels of APL antibodies (anti-cardiolipin antibodies [ACL], lupus anticoagulants [LAC], anti-beta2-glycoprotein-1 [anti-β2GP1] and anti-prothrombin antibodies) were also determined. Despite similar TF and TF pathway inhibitor (TFPI) total antigen levels, SLE patients had significantly increased levels of TFPI free antigen (patients vs controls; mean ±?SD) (11.6 ± 0.9 ng/mL vs 6.4 ± 0.4 ng/mL; p?相似文献   

High titer of anti-phosphatidylserine-prothrombin complex antibodies in patients with cutaneous polyarteritis nodosa

OBJECTIVE: To investigate possible correlations between cutaneous polyarteritis nodosa (CPN) and antiphospholipid syndrome-associated antibodies. METHODS: Sixteen patients were referred with CPN features. To investigate the possible role of antiphospholipid antibodies (aPL) in CPN, we measured serum lupus anticoagulant (LAC), IgG and IgM anticardiolipin (aCL) and anti-phosphatidylserine-prothrombin complex (anti-PS/PT) antibodies, and anti-beta(2)-glycoprotein I-dependent cardiolipin (anti-beta(2)GPI/CL) antibodies in the 16 CPN patients, 8 microscopic polyangiitis (MPA) patients, 33 systemic lupus erythematosus (SLE) patients, and 23 healthy controls. LAC was determined according to the Subcommittee on Lupus Anticoagulant/Phospholipid Dependent Antibody guidelines. Anti-PS/PT, aCL, and anti-beta(2)GPI/CL antibodies were measured by enzyme-linked immunosorbent assay. RESULTS: Anti-PS/PT antibodies and/or LAC were detected in all CPN patients, but not in any controls. Serum IgM anti-PS/PT antibody was found in 13 (81.3%) CPN patients. The mean +/- SD serum anti-PS/PT IgM level (19.9 +/- 12.4 units/ml) in CPN patients was significantly elevated compared with SLE patients (5.7 +/- 5.9 units/ml). IgG anti-PS/PT antibody was detected in 5 (31.3%) CPN patients, but not in any controls. The IgG PS/PT antibody titers were similar in CPN patients (12.3 +/- 12.0 units/ml) and SLE patients (13.8 +/- 14.3 units/ml). Three (18.8%) CPN patients were positive for IgG aCL antibody and 2 (12.5%) for IgM aCL antibody. No MPA patients had aPL. CPN skin manifestations included livedo reticularis (14 [87.5%]). Direct immunofluorescence (DIF) revealed C3 within the affected vessels in 7 (77.8%) of 9 CPN patients. CONCLUSION: Our study demonstrated that presence of anti-PS/PT antibodies and/or LAC could serve as markers in CPN patients. CPN could be dependently associated with the presence of anti-PS/PT antibody. Clinicians need to recognize these titers to permit early accurate diagnosis and treatment. We believe that anti-PS/PT antibodies will become widely recognized as a new factor when diagnosing CPN.     

血浆可溶型人类白细胞抗原-G在系统性红斑狼疮患者中的表达分析

目的 检测系统性红斑狼疮(SLE)患者血浆可溶性人类白细胞抗原-G(sHLA-G)水平,并分析其与SLE脏器受累及疾病活动性的关系,探讨sHLA-G在SLE发病机制中的可能作用.方法 酶联免疫吸附法(ELISA)检测96例SLE患者血浆sHLA-G水平,并与74名健康体检者对照.采用t检验,直线相关回归方法 和X2检验,P<0.05为差异有统计学意义.结果血浆sHLA-G水平在SLE患者为(230±192)U/ml;显著高于健康体检者的(118±38)U/ml(t=5.07,P=0.0001);血浆sHLA-G水平与SLE疾病活动性指数(SLEDIA)无明显相关性(r=0.157,P=0.141);但血浆sHLA-G水平增高的SLE患者较血浆sHLA-G水平正常患者SLEDAI高(11±5与8±5,P=0.027),易出现中枢神经系统受累(24.2%与4.8%,P=0.007).结论 血浆sHLA-G水平增高SLE患者病情较重、中枢神经系统受累较多,提示sHLA-G在SLE病理过程中可能发挥重要作用.     

Relationship of renal histopathology in SLE nephritis to immunoglobulin class of anti-DNA

Using a newly-developed solid-phase radioimmunoassay for DNA-binding immunoglobulins, immunoglobulin M (IgM), immunoglobulin G (IgG) and immunoglobulin A (IgA) anti-DNA were measured in serums from 11 patients with active untreated systemic lupus erythematosus (SLE) with nephritis. All patients underwent renal biopsy and were classified according to standard criteria as having diffuse or focal proliferative glomerulonephritis. Although both groups had almost identical total anti-DNA (13.1 versus 13.9 μg/ml, respectively), the IgM to IgG ratio was significantly higher (p < 0.01) in the group with DPGN (7.51) than in the group with FPGN (1.10). We suggest that the switchover mechanism from IgM to IgG antibody production is more profoundly impaired in SLE with severe renal disease than in SLE with mild renal disease.