Occupational Asthma Reference

Balboni A, Baricordi OR, Fabbri LM, Gandini E, Ciaccia A, Mapp CE, Association between toluene di-isocyanate-induced asthma and DQB1 markers: a possible role for aspartic acid at position 57, Eur Respir J, 1996;9:207-210,

Keywords: Italy, oa, TDI, HLA

Known Authors

Leo Fabbri, University of Moderna and Reggio Emilia Leo Fabbri

Christina Mapp, Padova University Christina Mapp

If you would like to become a known author and have your picture displayed along with your papers then please get in touch from the contact page. Known authors can choose to receive emails when their papers receive comments.

Abstract

Toluene diisocyanate (TDI) is the most common cause of occupational asthma in western countries. The aim of this study was to investigate whether genetic factors are involved in toluene diisocyanate-induced asthma. We studied the frequency of human leucocyte antigen (HLA) class II genetic markers in three groups of subjects: 1) subjects with TDI-induced asthma (n = 30); 2) exposed subjects with no history of TDI-induced asthma (n = 12); and 3) normal subjects not exposed to TDI (n = 126). Venous blood samples were collected from the three groups and the polymorphic second exon of DQA and DQB genes was amplified by the polymerase chain reaction (PCR) method. Evaluation of HLA class II gene products in TDI-induced asthma cases showed a positive association with HLA-DQB1 * 0503 and a negative association with HLA-DQB1 * 0501 alleles, which differed at residue 57 for a single amino acid, i.e. aspartic acid in DQB1 * 0503 and valine in DQB1 * 0501. No significant difference was found in the distribution of DQA1 alleles between asthmatics and controls. Our results confirm the hypothesis that HLA-DQB1 * 0503 has a role in conferring susceptibility to TDI-induced asthma and that residue 57 of HLA-DQB1 is a potentially critical location

Full Text

Full text of this reference not available

Please Log In or Register to add the full text to this reference

Associated Questions

There are no associations for this paper.

Please Log In or Register to put forward this reference as evidence to a question.

Bohrf Occupational Asthma Guidelines

This reference has been analysed as part of the BOHRF occupational asthma guidelines. Please click to view the Bohrf occupational asthma guideline data for this reference.

Comments

Please sign in or register to add your thoughts.


Oasys and occupational asthma smoke logo