Clinical associations of autoantibodies to human muscarinic acetylcholine receptor 3213-228 in primary Sjögren's syndrome

L. Kovács, I. Marczinovits, A. György, G. Tóth, L. Dorgai, J. Pál, J. Molnár, G. Pokorny

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Objectives. The authors have previously identified a peptide of the human muscarinic acetylcholine receptor-3 (m3AChR) as a suitable antigen for the immunodetection of antimuscarinic acetylcholine receptor autoantibodies in primary Sjögren's syndrome (pSS). The aim of this study was to assess the clinical correlations and disease specificity of these antibodies. Methods. Seventy-three pSS, 40 rheumatoid arthritis (RA), 19 systemic lupus erythematosus (SLE), 14 secondary Sjögren's syndrome (sSS) patients, 22 subjects in whom pSS was suspected but in whom the diagnosis not could eventually be established (suspSS) and 40 healthy subjects were investigated. An enzyme-linked immunosorbent assay system developed by the authors using a 16-mer peptide of the m3AChR (m3AChR213-228) in a recombinant fusion peptide form was used as the antigen. Results. Anti-m3AChR213-228 antibody positivity was observed in 66 (90%) of the pSS patients. The antibody levels correlated positively with the number of extraglandular organ manifestations. Both the mean antibody levels and the occurrence of anti-m3AChR213-228 positivity were significantly higher in pSS than in the comparison groups. The test discriminated the pSS patients from the various comparison groups with specificities of 65, 68, 71 and 50% for RA, SLE, sSS and suspSS, respectively. Conclusions. The presence of m3AChR213-228 antibodies is a common feature in pSS. Although it is significantly more common in pSS than in the comparison groups, anti-m3AChR213-228 positivity is not exclusive to pSS.

Original languageEnglish
Pages (from-to)1021-1025
Number of pages5
JournalRheumatology
Volume44
Issue number8
DOIs
Publication statusPublished - Aug 2005

Fingerprint

Muscarinic Receptors
Autoantibodies
Antibodies
Systemic Lupus Erythematosus
Peptides
Rheumatoid Arthritis
Antigens
Muscarinic Antagonists
Antibody Specificity
Cholinergic Receptors
Healthy Volunteers
Enzyme-Linked Immunosorbent Assay

Keywords

  • Antimuscarinic acetylcholine receptor-3 autoantibody
  • Disease specificity
  • Muscarinic acetylcholine receptor-3
  • Primary Sjögren's syndrome

ASJC Scopus subject areas

  • Neuroscience(all)
  • Rheumatology

Cite this

Clinical associations of autoantibodies to human muscarinic acetylcholine receptor 3213-228 in primary Sjögren's syndrome. / Kovács, L.; Marczinovits, I.; György, A.; Tóth, G.; Dorgai, L.; Pál, J.; Molnár, J.; Pokorny, G.

In: Rheumatology, Vol. 44, No. 8, 08.2005, p. 1021-1025.

Research output: Contribution to journalArticle

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title = "Clinical associations of autoantibodies to human muscarinic acetylcholine receptor 3213-228 in primary Sj{\"o}gren's syndrome",
abstract = "Objectives. The authors have previously identified a peptide of the human muscarinic acetylcholine receptor-3 (m3AChR) as a suitable antigen for the immunodetection of antimuscarinic acetylcholine receptor autoantibodies in primary Sj{\"o}gren's syndrome (pSS). The aim of this study was to assess the clinical correlations and disease specificity of these antibodies. Methods. Seventy-three pSS, 40 rheumatoid arthritis (RA), 19 systemic lupus erythematosus (SLE), 14 secondary Sj{\"o}gren's syndrome (sSS) patients, 22 subjects in whom pSS was suspected but in whom the diagnosis not could eventually be established (suspSS) and 40 healthy subjects were investigated. An enzyme-linked immunosorbent assay system developed by the authors using a 16-mer peptide of the m3AChR (m3AChR213-228) in a recombinant fusion peptide form was used as the antigen. Results. Anti-m3AChR213-228 antibody positivity was observed in 66 (90{\%}) of the pSS patients. The antibody levels correlated positively with the number of extraglandular organ manifestations. Both the mean antibody levels and the occurrence of anti-m3AChR213-228 positivity were significantly higher in pSS than in the comparison groups. The test discriminated the pSS patients from the various comparison groups with specificities of 65, 68, 71 and 50{\%} for RA, SLE, sSS and suspSS, respectively. Conclusions. The presence of m3AChR213-228 antibodies is a common feature in pSS. Although it is significantly more common in pSS than in the comparison groups, anti-m3AChR213-228 positivity is not exclusive to pSS.",
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T1 - Clinical associations of autoantibodies to human muscarinic acetylcholine receptor 3213-228 in primary Sjögren's syndrome

AU - Kovács, L.

AU - Marczinovits, I.

AU - György, A.

AU - Tóth, G.

AU - Dorgai, L.

AU - Pál, J.

AU - Molnár, J.

AU - Pokorny, G.

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N2 - Objectives. The authors have previously identified a peptide of the human muscarinic acetylcholine receptor-3 (m3AChR) as a suitable antigen for the immunodetection of antimuscarinic acetylcholine receptor autoantibodies in primary Sjögren's syndrome (pSS). The aim of this study was to assess the clinical correlations and disease specificity of these antibodies. Methods. Seventy-three pSS, 40 rheumatoid arthritis (RA), 19 systemic lupus erythematosus (SLE), 14 secondary Sjögren's syndrome (sSS) patients, 22 subjects in whom pSS was suspected but in whom the diagnosis not could eventually be established (suspSS) and 40 healthy subjects were investigated. An enzyme-linked immunosorbent assay system developed by the authors using a 16-mer peptide of the m3AChR (m3AChR213-228) in a recombinant fusion peptide form was used as the antigen. Results. Anti-m3AChR213-228 antibody positivity was observed in 66 (90%) of the pSS patients. The antibody levels correlated positively with the number of extraglandular organ manifestations. Both the mean antibody levels and the occurrence of anti-m3AChR213-228 positivity were significantly higher in pSS than in the comparison groups. The test discriminated the pSS patients from the various comparison groups with specificities of 65, 68, 71 and 50% for RA, SLE, sSS and suspSS, respectively. Conclusions. The presence of m3AChR213-228 antibodies is a common feature in pSS. Although it is significantly more common in pSS than in the comparison groups, anti-m3AChR213-228 positivity is not exclusive to pSS.

AB - Objectives. The authors have previously identified a peptide of the human muscarinic acetylcholine receptor-3 (m3AChR) as a suitable antigen for the immunodetection of antimuscarinic acetylcholine receptor autoantibodies in primary Sjögren's syndrome (pSS). The aim of this study was to assess the clinical correlations and disease specificity of these antibodies. Methods. Seventy-three pSS, 40 rheumatoid arthritis (RA), 19 systemic lupus erythematosus (SLE), 14 secondary Sjögren's syndrome (sSS) patients, 22 subjects in whom pSS was suspected but in whom the diagnosis not could eventually be established (suspSS) and 40 healthy subjects were investigated. An enzyme-linked immunosorbent assay system developed by the authors using a 16-mer peptide of the m3AChR (m3AChR213-228) in a recombinant fusion peptide form was used as the antigen. Results. Anti-m3AChR213-228 antibody positivity was observed in 66 (90%) of the pSS patients. The antibody levels correlated positively with the number of extraglandular organ manifestations. Both the mean antibody levels and the occurrence of anti-m3AChR213-228 positivity were significantly higher in pSS than in the comparison groups. The test discriminated the pSS patients from the various comparison groups with specificities of 65, 68, 71 and 50% for RA, SLE, sSS and suspSS, respectively. Conclusions. The presence of m3AChR213-228 antibodies is a common feature in pSS. Although it is significantly more common in pSS than in the comparison groups, anti-m3AChR213-228 positivity is not exclusive to pSS.

KW - Antimuscarinic acetylcholine receptor-3 autoantibody

KW - Disease specificity

KW - Muscarinic acetylcholine receptor-3

KW - Primary Sjögren's syndrome

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