Detection of pathogenic bacteria and biomarkers in lung specimens from cystic fibrosis patients.

Autor:	Tolle JJ; Department of Medicine, Division of Allergy, Pulmonary & Critical Care Medicine, Nashville, TN, United States of America., Jadhao S; Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States of America.; Center for Childhood Infections and Vaccines, Children's Healthcare of Atlanta, Atlanta, GA, United States of America., Patel B; Department of Medicine, Division of Allergy, Pulmonary & Critical Care Medicine, Nashville, TN, United States of America., Sun H; Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States of America.; Center for Childhood Infections and Vaccines, Children's Healthcare of Atlanta, Atlanta, GA, United States of America., Eastman S; Department of Medicine, Division of Allergy, Pulmonary & Critical Care Medicine, Nashville, TN, United States of America., Hartert T; Department of Medicine, Division of Allergy, Pulmonary & Critical Care Medicine, Nashville, TN, United States of America., Ku DN; School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, United States of America., Anderson LJ; Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, United States of America.; Center for Childhood Infections and Vaccines, Children's Healthcare of Atlanta, Atlanta, GA, United States of America.
Jazyk:	angličtina
Zdroj:	Journal of breath research [J Breath Res] 2024 Jul 16; Vol. 18 (4). Date of Electronic Publication: 2024 Jul 16.
DOI:	10.1088/1752-7163/ad56bc
Abstrakt:	Diagnosing lung infections is often challenging because of the lack of a high-quality specimen from the diseased lung. Since persons with cystic fibrosis are subject to chronic lung infection, there is frequently a need for a lung specimen. In this small, proof of principle study, we determined that PneumoniaCheck TM , a non-invasive device that captures coughed droplets from the lung on a filter, might help meet this need. We obtained 10 PneumoniaCheck TM coughed specimens and 2 sputum specimens from adult CF patients hospitalized with an exacerbation of their illness. We detected amylase (upper respiratory tract) with an enzymatic assay, surfactant A (lower respiratory tract) with an immunoassay, pathogenic bacteria by PCR, and markers of inflammation by a Luminex multiplex immunoassay. The amylase and surfactant A levels suggested that 9/10 coughed specimens were from lower respiratory tract with minimal upper respiratory contamination. The PCR assays detected pathogenic bacteria in 7 of 9 specimens and multiplex Luminex assay detected a variety of cytokines or chemokines. These data indicate that the PneumoniaCheck TM coughed specimens can capture good quality lower respiratory tract specimens that have the potential to help in diagnosis, management and understanding of CF exacerbations and other lung disease. (Creative Commons Attribution license.)
Databáze:	MEDLINE
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