Evidence map›Paper›PMID 21900522›Full record

ArticleJournal of clinical microbiology2011

Molecular bacterial load assay, a culture-free biomarker for rapid and accurate quantification of sputum Mycobacterium tuberculosis bacillary load during treatment.

Isobella Honeyborne, Timothy D McHugh, Patrick P J Phillips, Selina Bannoo, Anna Bateson, Nora Carroll, Felicity M Perrin, Katharina Ronacher, Laura Wright, Paul D van Helden and 2 more

Abstract readEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

69 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Beyond culturability: VBNC-like and differentially culturableFrontiers in cellular and infection microbiology · 2026
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. The Human PathogenBiology · 2024
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Frontiers in microbiology · 2024
    Review
  17. Review
  18. Article
  19. Tuberculosis Molecular Bacterial Load Assay Reveals Early Delayed Bacterial Killing in Patients With Relapse.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Article
  20. Review

9 more citing papers are in PubMed but not listed here.

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

12 authors.

Isobella HoneyborneCentre for Clinical Microbiology, M9, Department of Infection, Royal Free Campus, University College London, Rowland Hill Street, London NW3 2PF, UK. i.honeyborne@ucl.ac.uk
Timothy D McHugh
Patrick P J Phillips
Selina Bannoo
Anna Bateson
Nora Carroll
Felicity M Perrin
Katharina Ronacher
Laura Wright
Paul D van Helden
Gerhard Walzl
Stephen H Gillespie

Funding

Medical Research Council G0601466Medical Research Council G0802079
6 · The paper itself

Abstract

A molecular assay to quantify Mycobacterium tuberculosis is described. In vitro, 98% (n = 96) of sputum samples with a known number of bacilli (10(7) to 10(2) bacilli) could be enumerated within 0.5 log(10). In comparison to culture, the molecular bacterial load (MBL) assay is unaffected by other microorganisms present in the sample, results are obtained more quickly (within 24 h) and are seldom inhibited (0.7% samples), and the MBL assay critically shows the same biphasic decline as observed longitudinally during treatment. As a biomarker of treatment response, the MBL assay responds rapidly, with a mean decline in bacterial load for 111 subjects of 0.99 log(10) (95% confidence interval [95% CI], 0.81 to 1.17) after 3 days of chemotherapy. There was a significant association between the rate of bacterial decline during the same 3 days and bacilli ml(-1) sputum at day 0 (linear regression, P = 0.0003) and a 3.62 increased odds ratio of relapse for every 1 log(10) increase in pretreatment bacterial load (95% CI, 1.53 to 8.59).

Indexed as

Antitubercular AgentsBacterial LoadDrug MonitoringHumansMycobacterium tuberculosisSensitivity and SpecificitySputumTime FactorsTuberculosisAntitubercular Agents

Identifiers

PMID21900522
PMCPMC3209113

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.