Plasma Mitochondrial DNA Levels Are Associated With ARDS in Trauma and Sepsis Patients.

Abstract:

BACKGROUND:Critically ill patients who develop ARDS have substantial associated morbidity and mortality. Circulating mitochondrial DNA (mtDNA) released during critical illness causes endothelial dysfunction and lung injury in experimental models. This study hypothesized that elevated plasma mtDNA is associated with ARDS in critically ill patients with trauma and sepsis. METHODS:Plasma mtDNA concentrations were measured at ED presentation and approximately 48 h later in separate prospective cohorts of critically ill patients with trauma and sepsis. ARDS was classified according to the Berlin definition. The association of mtDNA with ARDS was tested by using multivariable logistic regression, adjusted for covariates previously shown to contribute to ARDS risk in each population. RESULTS:ARDS developed in 41 of 224 (18%) trauma patients and in 45 of 120 (38%) patients with sepsis. Forty-eight-hour mtDNA levels were significantly associated with ARDS (trauma: OR, 1.58/log copies/μL; 95% CI, 1.14-2.19 [P = .006]; sepsis: OR, 1.52/log copies/μL; 95% CI, 1.12-2.06 [P = .007]). Plasma mtDNA on presentation was not significantly associated with ARDS in either cohort. In patients with sepsis, 48-h mtDNA was more strongly associated with ARDS among those with a nonpulmonary infectious source (OR, 2.20/log copies/μL; 95% CI, 1.36-3.55 [P = .001], n = 69) than those with a pulmonary source (OR, 1.04/log copies/μL; 95% CI, 0.68-1.59 [P = .84], n = 51; P = .014 for interaction). CONCLUSIONS:Plasma mtDNA levels were associated with incident ARDS in two critical illness populations. Given supportive preclinical data, our findings suggest a potential link between circulating mtDNA and lung injury and merit further investigation as a potentially targetable mediator of ARDS.

journal_name

Chest

journal_title

Chest

authors

Faust HE,Reilly JP,Anderson BJ,Ittner CAG,Forker CM,Zhang P,Weaver BA,Holena DN,Lanken PN,Christie JD,Meyer NJ,Mangalmurti NS,Shashaty MGS

doi

10.1016/j.chest.2019.09.028

subject

Has Abstract

pub_date

2020-01-01 00:00:00

pages

67-76

issue

1

eissn

0012-3692

issn

1931-3543

pii

S0012-3692(19)34010-3

journal_volume

157

pub_type

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