Prevalence and characterization of perinuclear anti-neutrophil cytoplasmic antibodies (P-ANCA) directed against HMG1 and HMG2 in ulcerative colitis (UC)

J. Sobajima, S. Ozaki, H. Uesugi, F. Osakada, H. Shirakawa, M. Yoshida, K. Nakao

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

In a previous study, we reported that the high mobility group (HMG) non- histone chromosomal proteins HMG1 and HMG2 were novel target antigens of P- ANCA. In this study, we determined the immunodiagnostic value of anti- HMG1/HMG2 antibodies in patients with UC. Sixty sera from patients with UC were tested for reactivity with HMG1 and HMG2 by means of ELISA. Anti-HMG1 antibody was detected in 32% of patients (40% of P-ANCA+ patients). Anti- HMG2 antibody was detected in 33% (40% of P-ANCA+ patients). Thirty-five percent of sera were positive for antibody to either HMG1 or HMG2 (43% of P- ANCA+ patients). P-ANCA+ patients expressed anti-HMG1/HMG2 antibodies with significantly greater frequency compared with P-ANCA- patients. Furthermore, the anti-HMG1/HMG2 antibodies were significantly related to disease activity in UC. Sixteen of the 18 UC patients, who had high titres of anti-HMG1 or - HMG2 antibody during the active phase, showed lower titres in the inactive phase. Anti-HMG1/HMG2 antibodies appear to be useful as a marker for disease activity in UC.

Original languageEnglish
Pages (from-to)402-407
Number of pages6
JournalClinical and Experimental Immunology
Volume111
Issue number2
DOIs
Publication statusPublished - 1998
Externally publishedYes

Keywords

  • Anti-neutrophil cytoplasmic antibodies
  • HMG1
  • HMG2
  • Ulcerative colitis

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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