谢桃李 孙礼宾
摘要:目的 探讨血清25-羟维生素D[25-(OH)D] 维生素D水平与HSP发病的关系。方法 选择2017年12月~2018年12月至我院就诊的过敏性紫癜患儿49例设为实验组,另选取40例健康儿童设为健康对照组,采用化学发光法测定两组血清25-羟维生素D水平,免疫浊度法测定补体、免疫球蛋白并进行比较,分析其相关性。结果 实验组血清25-(OH)D水平为(19.061±6.572)ng/ml,低于健康对照组的(30.789±1.880)ng/ml,差异有统计学意义(t=-11.628,P<0.05);Pearson相关分析或Spearman秩相关分析示,实验组血清25-羟维生素D水平与免疫球蛋白IgA水平呈负相关(r=-0.352,P<0.05),与补体(C3、C4)、免疫球蛋白(IgG、IgM)水平间无明显相关性(r=0.199、0.248、-0.165、-0.204,均P>0.05)。结论 过敏性紫癜患儿中25羟维生素D可能参与了过敏性紫癜的发病过程。
关键词:过敏性紫癜;25-羟维生素D;补体;免疫球蛋白
中图分类号:R725.5 文献标识码:A DOI:10.3969/j.issn.1006-1959.2019.09.038
文章编号:1006-1959(2019)09-0116-03
Abstract:Objective To investigate the relationship between serum 25-hydroxyvitamin D [25-(OH)D] vitamin D levels and the pathogenesis of HSP. Methods A total of 49 children with Henoch-Sch?觟nlein purpura who were admitted to our hospital from December 2017 to December 2018 were selected as the experimental group, and 40 healthy children were selected as the healthy control group. The serum of the two groups was determined by chemiluminescence method. - Hydroxyvitamin D levels, immunoturbidimetric assays for complement and immunoglobulin were compared and analyzed for correlation. Results The serum 25-(OH) D level in the experimental group was (19.061±6.572) ng/ml, which was lower than that in the healthy control group (30.789±1.880) ng/ml,the difference was statistically significant (t=-11.628, P<0.05); Pearson correlation analysis or Spearman rank correlation analysis showed that serum 25-hydroxyvitamin D levels in the experimental group were negatively correlated with immunoglobulin IgA levels (r=-0.352, P<0.05), and complement (C3, C4), There was no significant correlation between immunoglobulin (IgG, IgM) levels (r=0.199, 0.248, -0.165, -0.204, both P>0.05). Conclusion 25-hydroxyvitamin D may be involved in the pathogenesis of Henoch-Sch?nlein purpura in children with Henoch-Sch?觟nlein purpura.
Key words:Henoch-Sch?觟nlein purpura;25-hydroxyvitamin D;Complement;Immunoglobulin
過敏性紫癜(Henoch-Sch?觟nlein purpura,HSP)是一种以全身性小血管炎症为主要病变、可累及多个器官系统的自身免疫性系统性血管炎。是儿童多发疾病,可以表现为皮肤紫癜、消化道出血、肾脏受累及关节肿痛并伴有活动障碍等。HSP的发病率在近年来有逐渐上升的趋势。本病常反复发作,严重影响患儿身体健康,但目前病因尚未完全明确,给临床治疗造成一定的困难。目前公认HSP患儿存在细胞免疫及体液免疫功能紊乱,主要以IgA介导的体液免疫异常为主[1],具体机制尚未完全阐明。近年来有研究显示,维生素D的作用不仅仅是调节体内钙磷代谢,维持血钙、血磷平衡并促进骨的矿化;并且其可通过多种途径调节免疫功能及炎症反应,在一些自身免疫疾病中起重要的作用[2]。低水平的维生素D与类风湿性关节炎、多发性硬化、贝赫切特病及系统性红斑狼疮等自身免疫性疾病的发病风险高度相关[2]。维生素D在HSP中的研究国内外较少报道,且维生素D水平与光照、膳食等有很大关系,此研究存在地域性差异,仍需进一步探讨维生素D水平与HSP发病的关系。