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目的 探讨血清软骨寡聚基质蛋白(Cartilage oligomeric matrix protein,COMP)对类风湿关节炎(Rheumatoid arthritis,RA)的诊断价值。方法 选取82例RA患者和34例健康对照人群,分为RA组和健康组。对类风湿关节炎患者,根据临床表现、实验室检查分为活动期组和缓解期组;根据放射学改变分为骨质破坏组和骨质未破坏组,并与抗环瓜氨酸抗体(抗CCP抗体)水平进行比较,评价COMP和抗CCP抗体在RA中的诊断作用,绘制ROC曲线,计算其各自的曲线下面积(AUC)、灵敏度、特异度。健康对照组检测指标同RA患者。结果 RA患者血清COMP水平显著高于健康对照人群(P<0.05),活动期组COMP水平显著高于缓解期组(P<0.05),骨质破坏组COMP水平高于骨质未破坏组(P=0.0156);当COMP和抗CCP抗体各自以21.51 ng/ml和34.76 RU/ml为最佳截断值来区分RA患者和健康人群时,COMP的AUC(0.864)、灵敏度(0.817)、特异度(0.882)均高于抗CCP抗体的AUC(0.764)、灵敏度(0.610)、特异度(0.824)。结论 COMP 作为软骨破坏的一种生物标记物,可以用来鉴别RA患者和健康人。 相似文献
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Background Multiple epiphysis dysplasia (MED) is a common skeletal dysplasia with a significant locus heterogeneity. In the majority of clinically defined cases, mutations have been identified in the gene encoding cartilage algometric matrix protein (COMP).
Methods Five patients were included in the study. Linkage analysis and mutation analysis of the COMP gene were conducted in the patients and there family members.
Results We have identified a novel mutation in axon 14 of COMP gene in the family.
Conclusion This mutation produced a severe MED phenotype with marked short stature, early onset osteoarthritis and remarkable radiographic changes. Our results extend the range of disease-causing mutations in COMP gene and contributed more information abort relationship between mutations and phenotype. 相似文献
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