TY - JOUR
T1 - Prevalence of disease-specific antinuclear antibodies in general population
T2 - Estimates from annual physical examinations of residents of a small town over a 5-year period
AU - Hayashi, Nobuhide
AU - Koshiba, Masahiro
AU - Nishimura, Kunihiro
AU - Sugiyama, Daisuke
AU - Nakamura, Tomoko
AU - Morinobu, Sahoko
AU - Kawano, Seiji
AU - Kumagai, Shunichi
N1 - Funding Information:
Acknowledgments We thank Mr. Tsutomu Iwanami and Ms. Sanae Ohgaki (Health Center of Y Town) for their excellent technical support of the health examinations. We also thank Mr. Hiroshi Suno, Mr. Jiro Arai, and Mr. Yasushi Ishihara (Medical & Biological Laboratories), Mr. Kazuo Ohkubo (Mitsubishi Kagaku Iatron), Mr. Kotaro Banno (Dade Behring), Mr. Takahiko Tsuchida (Abbott Japan), and Mr. Tatsuya Nomura (Fujirebio) for providing reagent kits and technical advice. This research was supported in part by a Grant-in-Aid for Scientific Research (12922105) from the Japan Society for the Promotion of Science and by research grants (044-0211-1558) from the Ministry of Health, Labour and Welfare of Japan.
PY - 2008/4
Y1 - 2008/4
N2 - The aim of this study was to investigate the types and prevalence of disease-specific antinuclear antibodies (ANAs) and their relationship to rheumatic diseases in the general Japanese population. An immunofluorescence (IF) method was used for the first screening of ANA levels in serum samples obtained from 2181 residents of a small Japanese town. Individuals positive for IF-ANA were then further tested for disease-specific ANAs using eight enzyme immunoassays. Physical status and the presence of illness were determined by means of questionnaires and medical examinations. Based on the result of the IF-ANA assay, the rates of positive samples at 1:40 and 1:160 dilutions were 26.0 and 9.5%, respectively, with females have significantly higher positivity rates than males (P < 0.0001). Among 566 IF-ANA-positive individuals, 100 individuals were found to have 114 disease-specific ANAs. Anti-SSA/ Ro, anti-centromere, and anti-U1RNP antibodies were detected in 58, 30, and 11 individuals, respectively, but anti-Sm, anti-Scl-70, and anti-Jo-1 antibodies were undetectable. Questionnaires and medical examinations revealed that among 60 disease-specific ANA-positive individuals that were available for testing, six had Sjögren's syndrome (SS), five were suspected of having SS, and five had rheumatoid arthritis. Surprisingly, 34 (57%) of the disease-specific ANA-positive individuals were clinically healthy. Anti-SSA/Ro, anti-centromere, and anti-U1RNP antibodies were quite frequent among clinically healthy Japanese subjects, although anti-Sm, anti-Scl-70, and anti-Jo-1 antibodies were not. Of the 60 individuals who tested positive for disease-specific ANAs, 30% (18/60) actually manifested systemic rheumatic diseases, while 50% showed no detectable signs or symptoms of rheumatic diseases.
AB - The aim of this study was to investigate the types and prevalence of disease-specific antinuclear antibodies (ANAs) and their relationship to rheumatic diseases in the general Japanese population. An immunofluorescence (IF) method was used for the first screening of ANA levels in serum samples obtained from 2181 residents of a small Japanese town. Individuals positive for IF-ANA were then further tested for disease-specific ANAs using eight enzyme immunoassays. Physical status and the presence of illness were determined by means of questionnaires and medical examinations. Based on the result of the IF-ANA assay, the rates of positive samples at 1:40 and 1:160 dilutions were 26.0 and 9.5%, respectively, with females have significantly higher positivity rates than males (P < 0.0001). Among 566 IF-ANA-positive individuals, 100 individuals were found to have 114 disease-specific ANAs. Anti-SSA/ Ro, anti-centromere, and anti-U1RNP antibodies were detected in 58, 30, and 11 individuals, respectively, but anti-Sm, anti-Scl-70, and anti-Jo-1 antibodies were undetectable. Questionnaires and medical examinations revealed that among 60 disease-specific ANA-positive individuals that were available for testing, six had Sjögren's syndrome (SS), five were suspected of having SS, and five had rheumatoid arthritis. Surprisingly, 34 (57%) of the disease-specific ANA-positive individuals were clinically healthy. Anti-SSA/Ro, anti-centromere, and anti-U1RNP antibodies were quite frequent among clinically healthy Japanese subjects, although anti-Sm, anti-Scl-70, and anti-Jo-1 antibodies were not. Of the 60 individuals who tested positive for disease-specific ANAs, 30% (18/60) actually manifested systemic rheumatic diseases, while 50% showed no detectable signs or symptoms of rheumatic diseases.
KW - Antinuclear antibodies
KW - Centromere
KW - Prevalence
KW - Residents
KW - Ro/SSA
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U2 - 10.1007/s10165-008-0028-1
DO - 10.1007/s10165-008-0028-1
M3 - Article
C2 - 18283522
AN - SCOPUS:41849084808
VL - 18
SP - 153
EP - 160
JO - Japanese Journal of Rheumatology
JF - Japanese Journal of Rheumatology
SN - 1439-7595
IS - 2
ER -