Validity of Platelia Aspergillus IgG and Aspergillus Precipitin Test To Distinguish Pulmonary Aspergillosis from Colonization

Autor: Kyota Shinfuku, Junko Suzuki, Keita Takeda, Masahiro Kawashima, Yoshiteru Morio, Yuka Sasaki, Hideaki Nagai, Akira Watanabe, Hirotoshi Matsui, Katsuhiko Kamei
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Microbiology Spectrum, Vol 11, Iss 1 (2023)
Druh dokumentu: article
ISSN: 2165-0497
DOI: 10.1128/spectrum.03435-22
Popis: ABSTRACT When Aspergillus, an ubiquitous, saprophytic fungus, is detected in respiratory tract specimens collected from chronic respiratory disease patients, it is important to determine whether it is a true infection or colonization. We investigated the usefulness of the Bio-Rad Platelia Aspergillus IgG (Platelia Aspergillus IgG) enzyme-linked immunosorbent assay (ELISA) method and the Aspergillus precipitin test to distinguish pulmonary aspergillosis from colonization. Between January 2017 and November 2021, 51 confirmed, untreated pulmonary aspergillosis (33 chronic pulmonary aspergillosis [CPA] and 18 allergic bronchopulmonary aspergillosis [ABPA]) and 77 colonization patients were included in this study. At first, the conventional cutoff value was utilized in assessing the validity of the two antibody tests for distinguishing pulmonary aspergillosis from colonization. The Platelia Aspergillus IgG cutoff value was then reevaluated to fit this situation. Finally, differences in test accuracy dependent on Aspergillus species were assessed for both antibody tests by comparing cases with Aspergillus fumigatus complex and those with non-fumigatus Aspergillus complex. Both antibody tests demonstrated significantly higher positive rates for pulmonary aspergillosis (P
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