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J Clin Microbiol. Sep 1990; 28(9): 2040–2044.
PMCID: PMC268100

Detection of Aspergillus antigens associated with invasive infection.

Abstract

Serial urine samples were collected from 33 neutropenic patients, 10 of whom developed invasive aspergillosis (IA) while undergoing bone marrow transplantation or remission induction therapy for leukemia. Concentrated urine samples from the infected patients were subjected to polyacrylamide gel electrophoresis, blotted, and then incubated with antiserum raised to a cell wall extract of Aspergillus fumigatus (anti-CW) or an immunoglobulin G monoclonal antibody to A. fumigatus galactomannan (EBA1). When IA patient urine blots were probed with anti-CW, major bands at 11 and 18 kilodaltons (kDa); intermediate bands at 13, 14, and 29 kDa; and minor bands at 38 and 44 kDa were seen. In contrast, EBA1 showed diffuse staining at molecular masses larger than 45 kDa and a single weak band at 21 kDa. Urine samples from the 23 patients with no evidence of IA were unreactive with both anti-CW and EBA1. These antigen bands are likely to represent immunodominant antigens which are excreted during IA and should play a valuable role in the development of rapid diagnostic tests for aspergillosis.

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Selected References

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