CD14-positive extracellular vesicles in bronchoalveolar lavage fluid as a new biomarker of acute respiratory distress syndrome
Recent studies have indicated that extracellular vesicles (EVs) may play a role in the pathogenesis of acute respiratory distress syndrome (ARDS). EVs have been identified as potential biomarkers of disease severity and prognosis in other pulmonary diseases. We sought to characterize the EV phenotyp...
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Published in | American journal of physiology. Lung cellular and molecular physiology Vol. 322; no. 4; pp. L617 - L624 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
American Physiological Society
01.04.2022
|
Series | Extracellular Vesicles in Lung Health, Disease, and Therapy |
Subjects | |
Online Access | Get full text |
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Summary: | Recent studies have indicated that extracellular vesicles (EVs) may play a role in the pathogenesis of acute respiratory distress syndrome (ARDS). EVs have been identified as potential biomarkers of disease severity and prognosis in other pulmonary diseases. We sought to characterize the EV phenotype within bronchoalveolar lavage (BAL) fluid of patients with ARDS, and to determine whether BAL EV could be used as a potential biomarker in ARDS. BAL was collected from patients with sepsis with and without ARDS, and from esophagectomy patients postoperatively (of whom a subset later developed ARDS during hospital admission). BAL EVs were characterized with regard to size, number, and cell of origin. Patients with sepsis-related ARDS had significantly higher numbers of CD14
/CD81
monocyte-derived BAL EV than patients with sepsis without ARDS (
= 0.015). However, the converse was observed in esophagectomy patients who later developed ARDS (
= 0.003). Esophagectomy patients who developed ARDS also had elevated CD31
/CD63
and CD31
/CD81
endothelial-derived BAL EV (
≤ 0.02) compared with esophagectomy patients who did not develop ARDS. Further studies are required to determine whether CD31
BAL EV may be a predictive biomarker for ARDS in esophagectomy patients. CD14
/CD81
BAL EV numbers were significantly higher in those patients with sepsis-related ARDS who died during the 30 days following intensive care unit admission (
= 0.027). Thus, CD14
/CD81
BAL EVs are a potential biomarker for disease severity and mortality in sepsis-related ARDS. These findings provide the impetus to further elucidate the contribution of these EVs to ARDS pathogenesis. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1040-0605 1522-1504 |
DOI: | 10.1152/ajplung.00052.2022 |