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Different subclasses and isotypes of antibodies against phosphorylcholine in haemodialysis patients: association with mortality.
Clinical & Experimental Immunology ( IF 3.4 ) Pub Date : 2020-04-16 , DOI: 10.1111/cei.13441
S K Samal 1 , A R Qureshi 2 , M Rahman 1 , P Stenvinkel 2 , J Frostegård 1
Affiliation  

The risk of premature death is high among patients on haemodialysis (HD patients). We previously determined that immunoglobulin (Ig)M antibodies against phosphorylcholine (anti‐PC) are negatively associated with increased risk of cardiovascular disease (CVD), atherosclerosis, some autoimmune diseases and mortality among HD patients in this cohort. Here, we also study other subclasses and isotypes of anti‐PC in HD patients in relation to mortality, inflammation and gender. The study group is a cohort of 209 prevalent HD patients [median age = 66 years, interquartile range (IQR) = 51–74], vintage time = 29 months (IQR = 15–58; 56% men) with a mean follow‐up period of 41 months (IQR = 20–60). Fifty‐six per cent were men. We also divided patients into inflamed C‐reactive protein (CRP) > 5·6 mg/ml and non‐inflamed CRP. Antibody levels were determined by in‐house enzyme‐linked immunosorbent assay. IgG1 anti‐PC below median was significantly associated with increased all‐cause mortality (after adjustment for confounders: P  = 0·02), while IgG, IgA and IgG2 anti‐PC were not associated with this outcome. Among non‐inflamed patients, IgM and IgG1 anti‐PC were significantly associated with mortality (P  = 0·047 and 0·02). IgG1 anti‐PC was significantly associated with mortality among men (P  = 0·03) and trending among women (P  = 0·26). IgM (as previously reported) and IgG1 anti‐PC are negatively associated with survival among HD patients and non‐inflamed HD patients, but among inflamed patients there were no associations. IgG, IgA or IgG2 anti‐PC were not associated with survival in these groups and subgroups. Further studies are needed to determine if raising anti‐PC levels, especially IgM and IgG1 anti‐PC, through immunization is beneficial.

中文翻译:


血液透析患者抗磷酸胆碱抗体的不同亚类和同种型:与死亡率的相关性。



血液透析患者(HD 患者)过早死亡的风险很高。我们之前确定,抗磷酸胆碱的免疫球蛋白 (Ig)M 抗体(抗 PC)与该队列中 HD 患者心血管疾病 (CVD)、动脉粥样硬化、某些自身免疫性疾病和死亡率的风险增加呈负相关。在这里,我们还研究了 HD 患者中抗 PC 的其他亚类和同种型与死亡率、炎症和性别的关系。该研究组由 209 名 HD 患病率患者组成 [中位年龄 = 66 岁,四分位距 (IQR) = 51-74],年份时间 = 29 个月(IQR = 15-58;56% 男性),平均随访时间为维持期为 41 个月 (IQR = 20–60)。百分之五十六是男性。我们还将患者分为炎症性 C 反应蛋白 (CRP) > 5·6 mg/ml 和非炎症性 CRP。抗体水平通过内部酶联免疫吸附测定法测定。低于中位数的 IgG1 抗 PC 与全因死亡率增加显着相关(调整混杂因素后: P = 0·02),而 IgG、IgA 和 IgG2 抗 PC 与此结果无关。在非炎症患者中,IgM 和 IgG1 抗 PC 与死亡率显着相关( P = 0·047 和 0·02)。 IgG1 抗 PC 与男性死亡率 ( P = 0·03) 和女性死亡率趋势显着相关 ( P = 0·26)。 IgM(如先前报道)和 IgG1 抗 PC 与 HD 患者和非炎症 HD 患者的生存呈负相关,但在炎症患者中没有相关性。 IgG、IgA 或 IgG2 抗 PC 与这些组和亚组的生存无关。 需要进一步的研究来确定通过免疫提高抗 PC 水平,尤其是 IgM 和 IgG1 抗 PC 是否有益。
更新日期:2020-04-16
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