The clinical significance of ANCA detction in patients with systemic lupus erythematosus
10.3760/cma.j.issn.1673-4130.2009.07.012
- VernacularTitle:系统性红斑狼疮患者中检测ANCA临床意义的研究
- Author:
Tao MA
;
Yuping XIAN
- Publication Type:Journal Article
- Keywords:
Lupus Erythematosus;
Systemic;
Antineutrophil Cytoplasmic Antibody;
Clinical Laboratory Techniques
- From:
International Journal of Laboratory Medicine
2009;30(7):651-652,654
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the diagnostic value of anti-neutrophil cytoplasmic antibody (ANCA) detction in patients with systemic lupus erythematosus (SLE). Methods Indirect immunofluorescence (IIF) and Western blotting were applied to detecting the expression of sera ANCA, antinuclear antibody (ANA), anti-double-stranded DNA antibody, anti-SmithD1 antibody in 25 samples of control group and 106 samples of patients with SLE. Results ALL samples of control group showed negative; 47.2% (50/106) sera showed ANCA positive in patients with SLE,and all of them were peripheral nuclear pattern (pANCA). In ANCA positive group, the positive rate of ANA, anti-SmithD1 antibody and anti-ds-DNA antibody was respectively 100% (50/50), 82% (41/50) and 94% (47/50); in ANCA negative group, the positive rate was respectively 91.1% (51/56), 67.9% (38/56)and 50% (28/56). There were no statistical differences in positive rates of ANA and anti-SmithD1 antibody between ANCA positive and negative groups (both P＞0. 05), but there was in positive rates of anti-ds-DNA antibody (P＜0.01). ANCA positive rate was respectively 84.6% (44/52) and 11.1%(6/54) in active SLE group (n=52) and inactive SLE group (n=54) (P＜0.01). Conclusion The determined ANCA in patients with SLE is not correlative with ANA and anti-SmithD1 antibody, but positively relates to anti-double-stranded DNA antibody. The positive rate of ANCA in patients with active lupus is significantly higher than that in non-active lupus.
