目的 探讨系统性红斑狼疮(SLE)患者外周血中25-羟基维生素D(25-OH-D)和白介素-17(IL-17)水平的变化及其临床意义。方法 选取40例SLE患者作为研究对象, 20例健康体检人员为健康对照组。运用电化学发光法检测25-OH-D水平,酶联免疫吸附法检测IL-17水平。结果 SLE患者25-OH-D水平明显低于健康对照组(P<0.01),活动期SLE患者25-OH-D水平明显低于缓解期患者(P<0.01)。SLE患者IL-17水平明显升高(P<0.01)。低25-OH-D水平与肾损害(P<0.01)相关,与疾病活动度评分(SLEDAI评分)(r=-0.844,P<0.01)及IL-17水平(r=-0.596,P<0.01)负相关。结论 SLE患者25-OH-D水平降低,低25-OH-D水平与肾损害、病情活动及高IL-17水平相关,25-OH-D可能参与了SLE的炎症进程。

Objective To assess the 25-hydroxyvitamin D (25-OH-D) and interleukin-17(IL-17) status in patients with systemic lupus erythematosus(SLE) and its clinical significance. Methods 40 SLE patients along with 20 matched controls were collected. Chemilumineseent immunoassay (CLIA) was used to detect the levers of serum 25-OH-D. The levels of serum IL-17 were evaluated using enzyme-linked immunosorbent assay (ELISA). Results Serum 25-OH-D level in SLE patients was significantly lower than in healthy controls (P<0.01). Serum 25-OH-D level in active SLE patients was significantly lower than in inactive SLE patients (P<0.01). Lever of IL-17 was significantly higher in SLE patients than in healthy controls (P<0.01). Insufficiency of 25-OH-D was related to renal disorders. Serum 25-OH-D level was negatively correlated with systemic lupus erythematosus disease activity index (SLEDAI) scores(r=-0.844, P<0.01)and serum levels of IL-17(r=-0.596, P<0.01). Conclusion Insufficiency of 25-OH-D is prevalent in SLE patients. It is associated with nephritis, disease activity and high serum levels of IL-17, thus it may play an important part in the inflammatory process in SLE.

目的 观察芳香烃受体(AhR)及Th17相关细胞因子在类风湿关节炎中的表达水平及其对疾病的预测价值。方法 选择2014年1月—2015年12月于我院就诊的RA患者60例作为观察组,选取同期于我院进行健康体检的正常人60例作为对照组,采用酶联免疫吸附法检测血清中 IL-17、IL-23及AhR的表达水平,并分析其与疾病活动度的关系。结果 RA患者血清IL-17、IL-23及AhR水平高于对照组(P＜0.05)。而根据病情严重程度,RA 非早期组IL-17、IL-23及AhR水平较早期组增高(P＜0.05)。血清 IL-17 水平与除CRP以外的病情活动度指标均呈正相关关系(P＜0.05)。IL-23 水平与SJC、TJC、HAQ 、DAS28 评分呈正相关关系(P＜0.05),但其他指标无明显相关性(P>0.05)。RA患者PBMC中AhR的表达水平与各项临床指标无相关性(P>0.05)。IL-17和IL-23水平与Sharp评分呈正相关关系(r=0.895,P＜0.01;r=0.708,P＜0.01)。AhR的表达与血清IL-17和IL-23水平呈正相关(r=0.415,P＜0.01)。经荧光定量PCR检测结果显示,RA患者AhR及其下游因子CYP1A1、IL-17、FOXP3 mRNA的表达水平高于对照组(P＜0.05)。且RA 非早期组AhR及其下游因子CYP1A1、IL-17、FOXP3 mRNA的表达水平较早期组增高(P＜0.05)。经相关关系检测,RA患者AhR及其下游因子CYP1A1、IL-17、FOXP3 mRNA的表达水平与Sharp评分呈正相关关系(r=0.715,P＜0.01;r=0.734,P＜0.01;r=0.812,P＜0.01;r=0.755,P＜0.01)。结论 Th17相关细胞因子IL-17和IL-23在RA病理生理过程中发挥重要作用,其表达增高,提示关节炎症处于活跃状态,骨质破坏较重,可作为评估RA病情的重要指标。RA患者体内AhR蛋白及其相关下游信号通路均呈高表达状态,AhR通路在RA患者的发病过程中可能发挥关键作用。

Objective To observe the expression level of aroma receptor (AhR) and Th17 related cytokines in rheumatoid arthritis and its predictive value to disease. Methods Sixty patients with RA who were treated in our hospital from January 2014 to December 2015 were selected as the observation group. Sixty healthy subjects were randomly selected as the control group. IL-17, IL-23 and AhR levels in serum were detected by enzyme-linked immunosorbent and the relationship between IL-17, IL-23 and disease activity were analyzed. Results IL-17, IL-23 and AhR levels in serum of RA patients were significantly higher than those in controls (P<0.05). However, the levels of IL-17, IL-23 and AhR levels were significantly higher in the non- early RA group than in the early group (P<0.05), depending on the severity of the disease. There was a positive correlation between serum IL-17 level and disease activity index except CRP (P<0.05). IL-23 level was positively correlated with SJC, TJC, HAQ and DAS28 scores (P<0.05), but no significant correlation was found between other indexes (P>0.05). The expression level of AhR in PBMC of RA patients was not correlated with clinical indexes (P>0.05). IL-17 and IL-23 levels were positively correlated with Sharp score (r=0.895, P<0.01; r=0.708, P<0.01). The expression of AhR was positively correlated with serum IL-17 and IL-23 levels (r=0.415, P<0.01). The expression of AhR and its downstream factors CYP1A1, IL-17 and FOXP3 mRNA in RA patients were significantly higher than those in the control group (P<0.05) by fluorescence quantitative PCR. The expression of AhR and its downstream factors CYP1A1, IL-17 and FOXP3 mRNA in RA group were significantly higher than those in early group (P<0.05). The expression level of AhR and its downstream factors CYP1A1, IL-17 and FOXP3 mRNA in RA patients were positively correlated with Sharp scores (r=0.715, P<0.01; r=0.734, P<0.01; r=0.812, P<0.01; r=0.755, P<0.01). Conclusion The Th17-related cytokines IL-17 and IL-23 play an important role in the pathophysiology of RA, and the expression of Th17-associated cytokines is increased, suggesting that arthritis is active and bone destruction is serious. The AhR protein and its associated downstream signaling pathways are highly expressed in RA patients, and the AhR pathway may play a key role in the pathogenesis of RA patients.