Evidence map›Paper›PMID 22827994›Full record

ArticleCritical care (London, England)2012

Metformin attenuates ventilator-induced lung injury.

George Tsaknis, Ilias I Siempos, Petros Kopterides, Nikolaos A Maniatis, Christina Magkou, Matina Kardara, Stefania Panoutsou, Anastasia Kotanidou, Charis Roussos, Apostolos Armaganidis

Open access · goldAbstract read
In one paragraph

Article in Critical care (London, England), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 15% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Acute Lung Injury and the NLRP3 Inflammasome.Journal of inflammation research · 2024
    Review
  11. Article
  12. Article
  13. Diabetes and COVID-19: Short- and Long-Term Consequences.Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme · 2022
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 2 countries.

George Tsaknis
Ilias I Siempos
Petros Kopterides
Nikolaos A Maniatis
Christina Magkou
Matina Kardara
Stefania Panoutsou
Anastasia Kotanidou
Charis Roussos
Apostolos Armaganidis
Evangelismos Hospital · GRNational and Kapodistrian University of Athens · GRUniversity General Hospital Attikon · GRAthens State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionDiabetic patients may develop acute lung injury less often than non-diabetics; a fact that could be partially ascribed to the usage of antidiabetic drugs, including metformin. Metformin exhibits pleiotropic properties which make it potentially beneficial against lung injury. We hypothesized that pretreatment with metformin preserves alveolar capillary permeability and, thus, prevents ventilator-induced lung injury.

methodsTwenty-four rabbits were randomly assigned to pretreatment with metformin (250 mg/Kg body weight/day per os) or no medication for two days. Explanted lungs were perfused at constant flow rate (300 mL/min) and ventilated with injurious (peak airway pressure 23 cmH₂O, tidal volume ≈17 mL/Kg) or protective (peak airway pressure 11 cmH₂O, tidal volume ≈7 mL/Kg) settings for 1 hour. Alveolar capillary permeability was assessed by ultrafiltration coefficient, total protein concentration in bronchoalveolar lavage fluid (BALF) and angiotensin-converting enzyme (ACE) activity in BALF.

resultsHigh-pressure ventilation of the ex-vivo lung preparation resulted in increased microvascular permeability, edema formation and microhemorrhage compared to protective ventilation. Compared to no medication, pretreatment with metformin was associated with a 2.9-fold reduction in ultrafiltration coefficient, a 2.5-fold reduction in pulmonary edema formation, lower protein concentration in BALF, lower ACE activity in BALF, and fewer histological lesions upon challenge of the lung preparation with injurious ventilation. In contrast, no differences regarding pulmonary artery pressure and BALF total cell number were noted. Administration of metformin did not impact on outcomes of lungs subjected to protective ventilation.

conclusionsPretreatment with metformin preserves alveolar capillary permeability and, thus, decreases the severity of ventilator-induced lung injury in this model.

Indexed as

AnimalsBronchoalveolar Lavage FluidCapillary PermeabilityDisease Models, AnimalIn Vitro TechniquesMaleMetforminPulmonary EdemaRabbitsTidal VolumeVentilator-Induced Lung InjuryMetformin

Identifiers

PMID22827994
PMCPMC3580719
OpenAlexW2044994154

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.