不同亚型幼年特发性关节炎患儿血脂水平变化研究

目的 分析不同亚型幼年特发性关节炎(JIA)患儿活动期及缓解期血脂水平的变化,初步探讨JIA患儿远期发生动脉粥样硬化的风险。方法 将128例初诊为JIA活动期患儿根据亚型分为少关节型48例,多关节型38例,全身型22例,附着点型20例,其中38例多关节型JIA患儿又根据类风湿因子(RF)是否阳性分为RF阳性多关节型15例,RF阴性多关节型23例;同期另随机选取45例行健康体检儿童作为健康对照组。检测各组血清总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)等水平进行比较分析。对87例治疗后处于缓解期的患儿进行血脂指标的复查,并与活动期各血脂指标水平进行比较分析。结果 在JIA活动期,全身型、RF阳性多关节型组与健康对照组比较,HDL-C水平明显下降,TG水平明显升高(P<0.05),而TC、LDL-C水平差异无统计学意义(P>0.05);其他亚型各血脂指标水平与健康对照组比较差异均无统计学意义(P>0.05)。RF阳性多关节型JIA患儿缓解期与活动期比较,血浆HDL-C明显升高(P<0.05);其他亚型JIA患儿缓解期与活动期比较,血浆各血脂指标水平差异均无统计学意义(P>0.05)。结论 全身型、RF阳性多关节型JIA活动期存在血脂代谢紊乱,RF阳性多关节型JIA缓解期血脂紊乱有所改善,其远期发生动脉粥样硬化的风险是否增大尚需进一步观察。

Serum lipid profile in children with different subtypes of juvenile idiopathic arthritis

Objective To study the serum lipid profile in children with different subtypes of juvenile idiopathic arthritis (JIA) during active and remission stages, as well as the long-term risk of atherosclerosis in children with JIA. Methods A total of 128 children newly diagnosed with active JIA were divided into oligoarticular JIA group with 48 children, polyarticular JIA group with 38 children, systemic JIA group with 22 children, and enthesitis-related JIA group with 20 children. According to the presence or absence of rheumatoid factor (RF), the polyarticular JIA group was further divided into RF-positive polyarticular JIA group with 15 children and RF-negative polyarticular JIA group with 23 children. A total of 45 children who underwent physical examination were randomly selected as healthy control group. The serum levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were measured and compared between groups. Blood lipid parameters were reexamined for 87 children in the remission stage after treatment and were compared with those in the active stage. Results Compared with the healthy control group, the systemic JIA group and the RF-positive polyarticular JIA group had a significant reduction in HDL-C and a significant increase in TG (P < 0.05) in the active stage, while there were no significant differences in TC and LDL-C (P > 0.05). There were no significant differences in blood lipid parameters between the other subtype JIA groups and the healthy control group (P > 0.05). The RF-positive polyarticular JIA group had a significant increase in plasma HDL-C from the active stage to the remission stage (P < 0.05), while the other subtype JIA groups had no significant changes in blood lipid parameters (P > 0.05). Conclusions Dyslipidemia may be observed in the active stage of children with systemic and RF-positive polyarticular JIA, with improvement in the remission stage of children with RF-positive polyarticular JIA. Further studies are needed to observe the long-term risk of atherosclerosis.