Evidence map›Paper›PMID 20559431›Full record

ArticlePloS one2010

Multiple M. tuberculosis phenotypes in mouse and guinea pig lung tissue revealed by a dual-staining approach.

Gavin J Ryan, Donald R Hoff, Emily R Driver, Martin I Voskuil, Mercedes Gonzalez-Juarrero, Randall J Basaraba, Dean C Crick, John S Spencer, Anne J Lenaerts

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

45 citing papers in PubMed, 75 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
  5. Types and functions of heterogeneity in mycobacteria.Nature reviews. Microbiology · 2022
    Review
  6. Phenotypic adaptation ofFrontiers in cellular and infection microbiology · 2022
    Review
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  9. Article
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  11. 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

9 authors at 2 institutions in 1 country.

Gavin J RyanDepartment of Microbiology, Colorado State University, Fort Collins, Colorado, United States of America.
Donald R Hoff
Emily R Driver
Martin I Voskuil
Mercedes Gonzalez-Juarrero
Randall J Basaraba
Dean C Crick
John S Spencer
Anne J Lenaerts
Colorado State University · USUniversity of Colorado Denver · US

Funding

The Mycobacterium Tuberculosis Dormancy ProgramR01AI061505 · NIAID · UNIVERSITY OF COLORADO DENVER · PI VOSKUIL, MARTIN INUA · 2005 to 2015
$3.6M
ANIMAL MODEL TESTING OF TB DRUGSN01AI095385 · NIAID · COLORADO STATE UNIVERSITY-FORT COLLINS · PI ORME, IAN M · 1999 to 2000
$446k
NIAID NIH HHS N01 AI095385NIAID NIH HHS N01 AI-95385NIAID NIH HHS R0-1 AI061505NIAID NIH HHS R01 AI061505
6 · The paper itself

Abstract

A unique hallmark of tuberculosis is the granulomatous lesions formed in the lung. Granulomas can be heterogeneous in nature and can develop a necrotic, hypoxic core which is surrounded by an acellular, fibrotic rim. Studying bacilli in this in vivo microenvironment is problematic as Mycobacterium tuberculosis can change its phenotype and also become acid-fast negative. Under in vitro models of differing environments, M. tuberculosis alters its metabolism, transcriptional profile and rate of replication. In this study, we investigated whether these phenotypic adaptations of M. tuberculosis are unique for certain environmental conditions and if they could therefore be used as differential markers. Bacilli were studied using fluorescent acid-fast auramine-rhodamine targeting the mycolic acid containing cell wall, and immunofluorescence targeting bacterial proteins using an anti-M. tuberculosis whole cell lysate polyclonal antibody. These techniques were combined and simultaneously applied to M. tuberculosis in vitro culture samples and to lung sections of M. tuberculosis infected mice and guinea pigs. Two phenotypically different subpopulations of M. tuberculosis were found in stationary culture whilst three subpopulations were found in hypoxic culture and in lung sections. Bacilli were either exclusively acid-fast positive, exclusively immunofluorescent positive or acid-fast and immunofluorescent positive. These results suggest that M. tuberculosis exists as multiple populations in most conditions, even within seemingly a single microenvironment. This is relevant information for approaches that study bacillary characteristics in pooled samples (using lipidomics and proteomics) as well as in M. tuberculosis drug development.

Indexed as

AnimalsBase SequenceDisease Models, AnimalDNA ProbesFemaleGuinea PigsIn Situ Hybridization, FluorescenceMiceMicroscopy, FluorescenceMycobacterium tuberculosisPhenotypeDNA Probes

Identifiers

PMID20559431
PMCPMC2885421
OpenAlexW2025395369

What OpenQuestion holds

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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.