Evidence map›Paper›PMID 27787436›Full record

ArticleThe journal of trauma and acute care surgery2017

Mitochondrial DNA damage associated molecular patterns in ventilator-associated pneumonia: Prevention and reversal by intratracheal DNase I.

Jon D Simmons, Daniel R Freno, C Annie Muscat, Boniface Obiako, Yann-Leei L Lee, Viktor M Pastukh, Sidney B Brevard, Mark N Gillespie

Registry-linked trialAbstract read
In one paragraph

Article in The journal of trauma and acute care surgery, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04445285 (Double Blind Randomized Phase 2 Placebo Controlled Trial Using rhDNase to Reduce Mortality in COVID-19 Patients With Respiratory Failure), which is not on this map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04445285 phase2recruitingnot on this mapstarted 2020, after this paper: background citation

Double Blind Randomized Phase 2 Placebo Controlled Trial Using rhDNase to Reduce Mortality in COVID-19 Patients With Respiratory Failure

TypeinterventionalSponsorJon SimmonsRan2020 to 2022Enrolled44ConditionsCovid19ArmsPulmozyme/ Recombinant human deoxyribonuclease (rh-DNase), 0.9%sodium chloride
3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Mitochondria of lung venular capillaries mediate lung-liver cross talk in pneumonia.American journal of physiology. Lung cellular and molecular physiology · 2023
    Article
  5. Article
  6. Review
  7. Article
  8. Altered lung metabolism and mitochondrial DAMPs in lung injury due to acute kidney injury.American journal of physiology. Lung cellular and molecular physiology · 2021
    Article
  9. Mitochondrial Fission Mediated Cigarette Smoke-induced Pulmonary Endothelial Injury.American journal of respiratory cell and molecular biology · 2020
    Article
  10. Review
  11. PEBP1 acts as a rheostat between prosurvival autophagy and ferroptotic death in asthmatic epithelial cells.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  12. Article
  13. Article
  14. Article
  15. Can We DAMPen the Cross-Talk between the Lung and Kidney in the ICU?American journal of respiratory and critical care medicine · 2018
    Article
  16. The Role of Danger Signals in the Pathogenesis and Perpetuation of Critical Illness.American journal of respiratory and critical care medicine · 2018
    Review
  17. Article
  18. Review
  19. Observational
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Jon D SimmonsFrom the Departments of Surgery (J.D.S., D.R.F., Y.L.L., S.B.B.) and Pharmacology (B.O., V.M.P., M.N.G.), and Center for Lung Biology (J.D.S., C.A.M., B.O., V.M.P., M.N.G.), University of South Alabama School of Medicine, Mobile, AL.
Daniel R Freno
C Annie Muscat
Boniface Obiako
Yann-Leei L Lee
Viktor M Pastukh
Sidney B Brevard
Mark N Gillespie
University of South Alabama · US

Funding

DNA LESIONS AND GENE EXPRESSION IN HYPOXIC LUNG DISEASER01HL058234 · NHLBI · UNIVERSITY OF SOUTH ALABAMA · PI GILLESPIE, MARK N · 1998 to 2018
$5.2M
MtDNA repair: An isolated pharmacologic target in acute lung injuryR01HL113614 · NHLBI · UNIVERSITY OF SOUTH ALABAMA · PI GILLESPIE, MARK N · 2012 to 2021
$3.5M
mtDNA DAMPS: a pharmacologic target in multi-organ system failureK08GM109113 · NIGMS · UNIVERSITY OF SOUTH ALABAMA · PI SIMMONS, JON DAVID · 2016 to 2019
$756k
NHLBI NIH HHS R01 HL058234NHLBI NIH HHS R01 HL113614NIGMS NIH HHS K08 GM109113
6 · The paper itself

Abstract

backgroundPrevious studies in isolated perfused rat lungs have revealed that endothelial barrier disruption after intratracheal administration of Pseudomonas aeruginosa (strain 103; PA103) only occurs after accumulation of extracellular mitochondrial DNA (mtDNA) damage-associated molecular patterns (DAMPs) in the perfusate and is suppressed by addition of DNase to the perfusion medium. Herein, we tested the hypothesis that intratracheal DNase-a route of administration readily translatable to patient with ventilator-associated pneumonia (VAP)-also enhances degradation of mtDNA and prevents bacteria-induced lung injury.

methodsIntratracheal DNase was administered to isolated rat lungs either before or after intratracheal challenge with PA103 to determine if bacteria-induced mtDNA DAMP-dependent lung injury could be prevented or reversed by enhanced mtDNA degradation. To explore whether this concept is translatable to patients with VAP, consecutive patients suspected of VAP were prospectively enrolled. All patients suspected of VAP received a bronchoalveolar lavage (BAL) with quantitative culture for the diagnosis of VAP. Mitochondrial and nuclear DNAs were measured from the BAL. MtDNA DAMPs (i.e., ND6) were measured from serum at time of suspected diagnosis and at 24 to 48 hours afterward.

resultsIntratracheal PA103 caused significantly increased the vascular filtration coefficient (Kf) and perfusate mtDNA DAMPs. In contrast, lungs pretreated or posttreated with intratracheal DNase were protected from increases in Kf and mtDNA DAMPs. Patients with the diagnosis of VAP had significantly higher mtDNA DAMPs in the BAL (248.70 ± 109.7 vs. 43.91 ± 16.61, p < 0.05, respectively) and in the serum at 24 hours (159.60 ± 77.37 vs. 10.43 ± 4.36, p < 0.05; respectively) when compared with patients that did not have VAP.

conclusionThese findings in isolated perfused rat lungs and a cohort of severely injured patients reveal an association between bacterial pneumonia and accumulation of mtDNA DAMPs in the lung and serum. Furthermore, administration of intratracheal DNase I prevented and reversed pulmonary endothelial dysfunction evoked by PA103.

Indexed as

DNA DamagePseudomonas aeruginosaAlabamaAnimalsBronchoalveolar Lavage FluidDeoxyribonuclease IDNA, MitochondrialHumansMalePneumonia, BacterialPneumonia, Ventilator-AssociatedProspective StudiesRatsRats, Sprague-DawleyReal-Time Polymerase Chain ReactionDeoxyribonuclease IDNA, Mitochondrial

Identifiers

PMID27787436
PMCPMC5943707
OpenAlexW2539519769

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.