江苏省自然科学基金面上项目(BK20201131)
目的 探讨汉族原发性胆汁性胆管炎(PBC)患者抗线粒体抗体 M2 亚型(AMA?M2)抗原表位分布情况及其临床价值。 方法 采用 Red / ET 重组技术制备 AMA?M2 抗原表位蛋白 PDC?E2、BCOADC?E2 和 OGDC?E2,建立相应的 ELISA 检测方法,对 374 例 PBC 患者抗原表位分布进行分析。 比较 AMA?M2 主要抗原表位组合模式间清蛋白-胆红素评分(ALBI)结果的差异,熊 去氧胆酸(UDCA)药物生化应答和不应答患者抗原表位分布的差异。 结果 374 例 PBC 患者血清与 PDC?E2、BCOADC?E2 和 OGDC?E2 抗原表位有反应率分别为 86.6%、88.0%和 35.0%。 与 PBC 患者血清有反应性的常见抗原表位模式( PDC?E2+ BCOADC?E2+OGDC?E2、PDC?E2+BCOADC?E2、PDC?E2 和 BCOADC?E2)间 ALBI 结果的差异有统计学意义(P<0.05),UDCA 生 化不应答患者血清与 BCOADC?E2 的反应率( 89. 9%) 高于应答患者( 77. 9%),差异有统计学意义( P < 0. 05)。 结论 与 AMA?M2抗原表位 PDC?E2、 BCOADC?E2 和 OGDC?E2 同时有反应性的 PBC 患者疾病预后不佳的风险较高, PDC?E2 和 BCOADC?E2抗原表位可能与 UDCA 治疗应答相关。
Objective To investigate the distribution of antigen epitopes of anti?mitochondrial antibody?M2 (AMA?M2) and its clinical value for the patients with primary biliary cholangitis (PBC) in Chinese Han population. Methods The epitope proteins of AMA?M2, PCD?E2, BCOADC?E2 and OGDC?E2, were prepared by RED / ET recombinant technique. An ELISA method was established to detect the distribution of epitope proteins in 374 patients with PBC. The differences of albumin?bilirubin (ALBI) score among the various pat? terns of the main epitopes (combined or single) of AMA?M2 were compared and the differences of the epitope distribution between bio? chemical responsive and non?responsive patients for ursodeoxycholic acid (UDCA) were also compared. Results The reaction rates of the serum samples from 374 PBC patients with the epitopes PDC?E2, BCoADC?E2 and OGDC?E2 were 86.6%, 88.0% and 35.0%, re? spectively. There were ofThe ALBI scores among the four common patterns of epitope (combined PDC?E2+BCOADC?E2+OGDC?E2 or PDC?E2+BCOADC?E2, single PDC?E2 or BCOADC?E2) reacted to AMA?M2 showed statistically significant differences in most of the serum samples from PBC patients (P<0.05). The reaction rate of the serum samples to epitope BCOADC?E2 in the patients presenting UDCA?biochemical non?response(89.9%)was higher than that in the patients with UDCA response(77.9%)with statistically significant difference ( P < 0. 05). Conclusion The patients whose serum reacted to all the three epitopes ( PDC?E2, BCOADC?E2 and OGDC?E2)of AMA?M2 antibodies have showed the high risk of poor prognosis for PBC. The epitopes of PDC?E2 and BCOADC?E2 may likely to associate with responses of UDCA treatment.
邱方,诸萍,王婵,江鹏,刘向东.汉族原发性胆汁性胆管炎患者抗线粒体抗体 M2 亚型 抗原表位分布及其临床价值[J].临床检验杂志,2021,39(10):748-751