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The initial manifestations and final diagnosis of patients with high and low titers of antinuclear antibodies after 6 months of follow-up.
MedLine Citation:
PMID:  21524618     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: The antinuclear antibody (ANA) test is the most commonly used test to screen for autoimmune diseases. However, only a limited numbers of studies have addressed the characteristics of patients positive for ANA. In this study, we aimed to clarify the relationship between initial presentations, ANA titer, and final diagnoses.
METHODS: Patients who visited National Taiwan University Hospital and received a first ANA test were enrolled and then followed for a further 6 months. The symptoms and signs at the time of ANA testing, ANA titers, and the final diagnoses were recorded and analyzed.
RESULTS: A total of 355 patients were positive for ANA. Joint pain was the most common initial presentation at the time of ANA testing. Compared with the patients with low ANA titers (<1:640), those with high ANA titers (≥1:640) were more susceptible to autoimmune diseases. More importantly, of the patients with initial presentations of joint pain, fever, abnormal urinalysis, or skin rash/skin tightness, autoimmune diseases were more frequently diagnosed in those with high ANA titers than with low ANA titers (p<0.05). In addition, both anti-double strand DNA antibodies and anti-extractable nuclear antibodies were more commonly detected in patients with high ANA titers.
CONCLUSIONS: A high ANA titer seems to be a useful biomarker for the diagnosis of autoimmune diseases, especially for patients presenting with joint pain, fever, abnormal urinalysis, or skin rash/skin tightness.
Kun-Yi Wang; Yao-Hsu Yang; Ya-Hui Chuang; Pei-Jung Chan; Hsin-Hui Yu; Jyh-Hong Lee; Li-Chieh Wang; Bor-Luen Chiang
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Publication Detail:
Type:  Journal Article     Date:  2011-01-19
Journal Detail:
Title:  Journal of microbiology, immunology, and infection = Wei mian yu gan ran za zhi     Volume:  44     ISSN:  1995-9133     ISO Abbreviation:  J Microbiol Immunol Infect     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-04-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100956211     Medline TA:  J Microbiol Immunol Infect     Country:  England    
Other Details:
Languages:  eng     Pagination:  222-8     Citation Subset:  IM    
Copyright Information:
Copyright © 2011. Published by Elsevier B.V.
Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan; Department of Pediatrics, Taitung Christian Hospital, Taitung, Taiwan.
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