Korean J Intern Med.  2002 Dec;17(4):249-251.

Longitudinal study of specific antibodies to toluene diisocyanate (TDI)-human serum albumin (HSA) conjugate in patients with TDI-induced asthma

  • 1Department of Allergy and Rheumatology, Ajou University School of Medicine, Suwon, Korea. hspark@madang.ajou.ac.kr


BACKGROUND: An appreciable number of patients with toluene diisocyanate (TDI)-induced asthma have high serum levels of specific IgE (sIgE) antibody to TDI-human serum albumin conjugate (HSA). A recent investigation suggested a role of specific IgG (sIgG) in the development of TDI asthma. METHODS: We observed the changes in the levels of specific IgE and IgG antibodies to TDIHSA conjugate in TDI-induced asthmatic patients during seven years avoidance. RESULTS: Six subjects with high sIgE and five with high sIgG were enrolled. All of them had taken anti-asthmatic medications with complete avoidance. Serum levels of sIgE and sIgG to TDI-HSA conjugate were detected by ELISA. The level of sIgE continued to decline up to 7 years and the mean half-life was 3.9 years. The mean half-life of sIgG was 4.5 yrs. CONCLUSION: These findings suggest that both sIgE and sIgG to TDI-HSA conjugate may persist for several years after the last exposure to TDI.


TDI-induced asthma; Specific IgE; Specific IgG; Half-life
Full Text Links
  • KJIM
export Copy
  • Twitter
  • Facebook
Similar articles
Copyright © 2021 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr