Evidence map›Paper›PMID 22479573›Full record

ArticlePloS one2012

Cell recovery in bronchoalveolar lavage fluid in smokers is dependent on cumulative smoking history.

Reza Karimi, Göran Tornling, Johan Grunewald, Anders Eklund, C Magnus Sköld

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
4.2field-weighted citation impact, top 6% 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

44 citing papers in PubMed, 81 citations in OpenAlex.

  1. Trial
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  8. Article
  9. Mucins 3A and 3B Are Expressed in the Epithelium of Human Large Airway.International journal of molecular sciences · 2023
    Observational
  10. Article
  11. Cigarette smoke depletes alveolar macrophages and delays clearance ofAmerican journal of physiology. Lung cellular and molecular physiology · 2023
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
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  19. Observational
  20. Effect of Nicotine on STAT1 Pathway and Oxidative Stress in Rat Lungs.Reports of biochemistry & molecular biology · 2021
    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

5 authors at 2 institutions in 2 countries.

Reza KarimiDivision of Respiratory Medicine, Department of Medicine, Karolinska Institutet, Karolinska University Hospital Solna, Stockholm, Sweden. reza.karimi@ki.se
Göran Tornling
Johan Grunewald
Anders Eklund
C Magnus Sköld
Karolinska Institutet · SEKarolinska University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSmoking is a risk factor for various lung diseases in which BAL may be used as a part of a clinical investigation. Interpretation of BAL fluid cellularity is however difficult due to high variability, in particular among smokers. In this study we aimed to evaluate the effect of smoking on BAL cellular components in asymptomatic smokers. The effects of smoking cessation, age and gender were also investigated in groups of smokers and exsmokers.

methodsWe performed a retrospective review of BAL findings, to our knowledge the largest single center investigation, in our department from 1999 to 2009. One hundred thirty two current smokers (48 males and 84 females) and 44 ex-smokers (16 males and 28 females) were included. A group of 295 (132 males and 163 females) never-smokers served as reference.

resultThe median [5-95 pctl] total number of cells and cell concentration in current smokers were 63.4 [28.6-132.1]×10(6) and 382.1 [189.7-864.3]×10(6)/L respectively and correlated positively to the cumulative smoking history. Macrophages were the predominant cell type (96.7% [90.4-99.0]) followed by lymphocytes (2% [0.8-7.7]) and neutrophils (0.6% [0-2.9]). The concentration of all inflammatory cells was increased in smokers compared to never smokers and ex-smokers. BAL fluid recovery was negatively correlated with age (p<0.001). Smoking men had a lower BAL fluid recovery than smoking women.

conclusionSmoking has a profound effect on BAL fluid cellularity, which is dependent on smoking history. Our results performed on a large group of current smokers and ex-smokers in a well standardized way, can contribute to better interpretation of BAL fluid cellularity in clinical context.

Indexed as

Bronchoalveolar Lavage FluidSmokingAdultAgedAge FactorsBronchoscopyCase-Control StudiesFemaleHumansLung DiseasesLymphocytesMacrophagesMaleMiddle AgedNeutrophilsRetrospective Studies

Identifiers

PMID22479573
PMCPMC3315521
OpenAlexW1992287663

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.