Evidence map›Paper›PMID 27148404›Full record

ArticleFibrogenesis & tissue repair2016

Active transforming growth factor-β is associated with phenotypic changes in granulomas after drug treatment in pulmonary tuberculosis.

Robert M DiFazio, Joshua T Mattila, Edwin C Klein, Lauren R Cirrincione, Mondraya Howard, Eileen A Wong, JoAnne L Flynn

Open access · hybridAbstract read
In one paragraph

Article in Fibrogenesis & tissue repair, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Review
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  5. Article
  6. Article
  7. Advances in the awareness of tuberculosis-associated chronic obstructive pulmonary disease.Chinese medical journal pulmonary and critical care medicine · 2024
    Review
  8. Review
  9. Article
  10. Journal of clinical tuberculosis and other mycobacterial diseases · 2024
    Review
  11. Macrophage-derived extracellular vesicles fromFrontiers in immunology · 2024
    Article
  12. Long term management of people with post-tuberculosis lung disease.The Korean journal of internal medicine · 2024
    Review
  13. Article
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  16. Article
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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

7 authors at 1 institution in 1 country.

Robert M DiFazioDepartment of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261 USA.
Joshua T MattilaDepartment of Infectious Diseases and Microbiology, Pitt Public Health, University of Pittsburgh, Pittsburgh, PA 15261 USA.
Edwin C KleinDivision of Laboratory Animal Resources, University of Pittsburgh, Pittsburgh, PA 15261 USA.
Lauren R CirrincioneUniversity of Pittsburgh School of Pharmacy, Pittsburgh, PA 15261 USA.
Mondraya HowardDepartment of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261 USA.
Eileen A WongDepartment of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261 USA.
JoAnne L FlynnDepartment of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261 USA.
University of Pittsburgh · US

Funding

Predicting immune responses that correlate with protection against tuberculosisR01HL110811 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI FLYNN, JOANNE L., KIRSCHNER, DENISE E · 2012 to 2016
$5.9M
Immunology of Infectious DiseaseT32AI060525 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JoAnne L. Flynn · 2005 to 2026
$5.3M
A multi-scale model to predict outcomes of immunomodulation and drug therapy duriR01EB012579 · NIBIB · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI FLYNN, JOANNE L., KIRSCHNER, DENISE E · 2011 to 2014
$2.3M
NHLBI NIH HHS R01 HL110811NIAID NIH HHS T32 AI060525
6 · The paper itself

Abstract

backgroundTuberculosis (TB) chemotherapy clears bacterial burden in the lungs of patients and allows the tuberculous lesions to heal through a fibrotic process. The healing process leaves pulmonary scar tissue that can impair lung function. The goal of this study was to identify fibrotic mediators as a stepping-stone to begin exploring mechanisms of tissue repair in TB.

methodsHematoxylin and eosin staining and Masson's trichrome stain were utilized to determine levels of collagenization in tuberculous granulomas from non-human primates. Immunohistochemistry was then employed to further interrogate these granulomas for markers associated with fibrogenesis, including transforming growth factor-β (TGFβ), α-smooth muscle actin (αSMA), phosphorylated SMAD-2/3, and CD163. These markers were compared across states of drug treatment using one-way ANOVA, and Pearson's test was used to determine the association of these markers with one another.

resultsTGFβ and αSMA were present in granulomas from primates with active TB disease. These molecules were reduced in abundance after TB chemotherapy. Phosphorylated SMAD-2/3, a signaling intermediate of TGFβ, was observed in greater amounts after 1 month of drug treatment than in active disease, suggesting that this particular pathway is blocked in active disease. Collagen production during tissue repair is strongly associated with TGFβ in this model, but not with CD163+ macrophages.

conclusionsTissue repair and fibrosis in TB that occurs during drug treatment is associated with active TGFβ that is produced during active disease. Further work will identify mechanisms of fibrosis and work towards mitigating lung impairment with treatments that target those mechanisms.

Indexed as

Collagen IDrug treatmentTransforming growth factor-βTuberculosis

Identifiers

PMID27148404
PMCPMC4855369
OpenAlexW2346724087

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.