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Int Arch Allergy Immunol. 2002 Jan;127(1):79-81.

Comparison of IgE antibody concentrations to pyromellitic dianhydride-modified laminin and human serum albumin in sera of exposed workers with respiratory complaints.

Author information

1
Research Institute for Occupational Medicine of the Berufsgenossenschaften (BGFA), Institute at the Ruhr-University, Bochum, Germany.

Abstract

BACKGROUND:

Acid anhydrides are used in a variety of industrial branches because of their highly reactive anhydride groups. Adverse effects of anhydride exposure include toxic/irritative effects as well as IgE- and IgG-mediated respiratory disorders. It was the aim of this study to examine the usefulness of conjugates of pyromellitic dianhydride (PMDA) and laminin, a respiratory tract protein, for the in vitro diagnosis of sensitization to PMDA.

METHODS:

Sera of PMDA-exposed workers (n = 9) and nonexposed controls (n = 8) were tested with an enzyme allergosorbent test (EAST). Human laminin and human serum albumin (HSA) were derivatized with PMDA and used as solid-phase in a commercial assay.

RESULTS:

Seven out of 9 exposed workers revealed elevated IgE antibody concentrations (>0.35 kU/l) against laminin-PMDA whereas 5 of 9 subjects had elevated IgE antibody concentrations to HSA-PMDA. All 9 workers had elevated IgE antibody concentrations in at least one of the two tests. Of the 4 workers who complained of shortness of breath, 3 were positive for laminin-PMDA and 2 for HSA-PMDA. All of the nonexposed subjects were negative (<0.35 kU/l) for laminin-PMDA.

CONCLUSION:

PMDA-modified laminin could provide an additional diagnostic tool for the detection of sensitization to PMDA.

PMID:
11893857
DOI:
10.1159/000048172
[Indexed for MEDLINE]

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