Evidence map›Paper›PMID 18644874›Full record

ArticleInfection and immunity2008

Mycoplasma pneumoniae infection and environmental tobacco smoke inhibit lung glutathione adaptive responses and increase oxidative stress.

Chirag Kariya, Hong Wei Chu, Jie Huang, Heather Leitner, Richard J Martin, Brian J Day

Abstract read
In one paragraph

Article in Infection and immunity, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

26 citing papers in PubMed, 42 citations in OpenAlex.

  1. Kukoamine A ImprovesBioMed research international · 2022
    Article
  2. Role of Mycoplasma Chaperone DnaK in Cellular Transformation.International journal of molecular sciences · 2020
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Infectious mononucleosis and hepatic function.Experimental and therapeutic medicine · 2018
    Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Glutathione Depletion Accelerates Cigarette Smoke-Induced Inflammation and Airspace Enlargement.Toxicological sciences : an official journal of the Society of Toxicology · 2015
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  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

6 authors at 3 institutions in 1 country.

Chirag KariyaUniversity of Colorado Health Sciences Center, Denver, Colorado 80206, USA..
Hong Wei Chu
Jie Huang
Heather Leitner
Richard J Martin
Brian J Day
National Jewish Health · USUniversity of Colorado Denver · USUniversity of Colorado Health · US

Funding

The Effect of Mycoplasma on Chronic AsthmaP01HL073907 · NHLBI · NATIONAL JEWISH HEALTH · PI MARTIN, RICHARD J · 2004 to 2008
$10.3M
Adaptive glutathione responses to cigarette smoke in COPDR01HL084469 · NHLBI · NATIONAL JEWISH HEALTH · PI DAY, BRIAN J · 2008 to 2011
$1.6M
Glutathione transport, oxidative stress and lung injuryR01HL075523 · NHLBI · NATIONAL JEWISH HEALTH · PI DAY, BRIAN J · 2004 to 2007
$1.3M
NHLBI NIH HHS HL073907NHLBI NIH HHS HL075523NHLBI NIH HHS HL084469NHLBI NIH HHS P01 HL073907NHLBI NIH HHS R01 HL075523NHLBI NIH HHS R01 HL084469
6 · The paper itself

Abstract

Chronic cigarette smoking evokes a lung glutathione (GSH) adaptive response that results in elevated GSH levels in the lung epithelial lining fluid (ELF). Currently, little is known about how the lung regulates or maintains steady-state levels of ELF GSH. Pathogens such as Mycoplasma pneumoniae can exacerbate airway inflammation and oxidative stress. The present study examined whether M. pneumoniae infections synergize with environmental tobacco smoke (ETS) to disrupt lung GSH adaptive responses. Mice were exposed separately and in combination to ETS and M. pneumoniae for 16 weeks. ETS exposure resulted in a doubling of ELF GSH levels, which was blocked in the M. pneumoniae-exposed mice. In addition, the ETS-plus-M. pneumoniae-exposed mice had elevated levels of oxidized glutathione (GSSG), resulting in a dramatic change in the ELF redox state that corresponded with an increase in lung tissue DNA oxidation. Similar findings were observed in human lung epithelial cells in vitro. Cells exposed separately or in combination to cigarette smoke extract and M. pneumoniae for 48 h had elevated apical levels of GSH compared to control cells, and these increases were blocked by M. pneumoniae and were also associated with increased cellular DNA oxidation. Further studies showed that M. pneumoniae exposure blocked ETS-induced increases in GSH reductase, an enzyme that recycles GSSG back to GSH, both in vitro and in vivo. These studies suggest that M. pneumoniae infection synergizes with ETS and suppresses the lung's ability to respond appropriately to environmental challenges leading to enhanced oxidative stress.

Indexed as

Oxidative StressSmokeAnimalsBody FluidsCell LineDNAEpithelial CellsGlutathioneHumansLungMiceMice, Inbred BALB CMycoplasma pneumoniaeOxidation-ReductionPneumonia, MycoplasmaRespiratory MucosaDNAGlutathioneSmoke

Identifiers

PMID18644874
PMCPMC2546817
OpenAlexW2155828192

What OpenQuestion holds

Textmetadata
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.