Evidence map›Paper›PMID 28337966›Full record

ReviewMicrobiology spectrum2017

Acid-Fast Positive and Acid-Fast Negative Mycobacterium tuberculosis: The Koch Paradox.

Catherine Vilchèze, Laurent Kremer

Open access · greenAbstract readHistorical ArticleReview
In one paragraph

Review in Microbiology spectrum, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

58 citing papers in PubMed, 101 citations in OpenAlex.

  1. Trial
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  15. A viable but nonculturable state ofJournal of medical microbiology · 2025
    Article
  16. Article
  17. Review
  18. CD14Frontiers in cellular and infection microbiology · 2025
    Article
  19. Article
  20. Review
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

2 authors at 2 institutions in 2 countries.

Catherine VilchèzeHoward Hughes Medical Institute, Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461.
Laurent KremerIRIM (ex-CPBS) UMR 9004, Infectious Disease Research Institute of Montpellier (IDRIM), Université de Montpellier, CNRS, 34293 Montpellier, France.
Albert Einstein College of Medicine · USInstitut de Recherche en Infectiologie de Montpellier · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Acid-fast (AF) staining, also known as Ziehl-Neelsen stain microscopic detection, developed over a century ago, is even today the most widely used diagnostic method for tuberculosis. Herein we present a short historical review of the evolution of AF staining methods and discuss Koch's paradox, in which non-AF tubercle bacilli can be detected in tuberculosis patients or in experimentally infected animals. The conversion of Mycobacterium tuberculosis from an actively growing, AF-positive form to a nonreplicating, AF-negative form during the course of infection is now well documented. The mechanisms of loss of acid-fastness are not fully understood but involve important metabolic processes, such as the accumulation of triacylglycerol-containing intracellular inclusions and changes in the composition and spatial architecture of the cell wall. Although the precise component(s) responsible for the AF staining method remains largely unknown, analysis of a series of genetically defined M. tuberculosis mutants, which are attenuated in mice, pointed to the primary role of mycolic acids and other cell wall-associated (glyco)lipids as molecular markers responsible for the AF property of mycobacteria. Further studies are now required to better describe the cell wall reorganization that occurs during dormancy and to develop new staining procedures that are not affected by such cell wall alterations and that are capable of detecting AF-negative cells.

Indexed as

AnimalsBacteriological TechniquesHistory, 19th CenturyHistory, 20th CenturyHistory, 21st CenturyHumansMycobacterium tuberculosisMycolic AcidsStaining and LabelingTuberculosisMycolic Acids

Identifiers

PMID28337966
PMCPMC11687472
OpenAlexW2613849789

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.