Evidence map›Paper›PMID 31568973›Full record

ArticleTuberculosis (Edinburgh, Scotland)2019

Comparison of the Mycobacterium tuberculosis molecular bacterial load assay, microscopy and GeneXpert versus liquid culture for viable bacterial load quantification before and after starting pulmonary tuberculosis treatment.

Hoang T Hai, Dao N Vinh, Do D A Thu, Nguyen T Hanh, Nguyen H Phu, Vijay Srinivasan, Guy E Thwaites, Nguyen T T Thuong

Abstract read
In one paragraph

Article in Tuberculosis (Edinburgh, Scotland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

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

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  12. Treatment Response in Pediatric Pulmonary Tuberculosis-A Prospective Longitudinal Study.Journal of the Pediatric Infectious Diseases Society · 2022
    Article
  13. Article
  14. Use of a molecular bacterial load assay to distinguish between active TB and post-TB lung disease.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2022
    Article
  15. Frontiers in immunology · 2022
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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

8 authors.

Hoang T HaiOxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam.
Dao N VinhOxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam.
Do D A ThuOxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam.
Nguyen T HanhOxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam.
Nguyen H PhuHospital for Tropical Diseases, Ho Chi Minh City, Viet Nam.
Vijay SrinivasanOxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam; Nuffield Department of Medicine, University of Oxford, United Kingdom.
Guy E ThwaitesOxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam; Nuffield Department of Medicine, University of Oxford, United Kingdom.
Nguyen T T ThuongOxford University Clinical Research Unit, Ho Chi Minh City, Viet Nam. Electronic address: thuongntt@oucru.org.

Funding

Wellcome Trust 106680/B/14/Z, 2015Wellcome Trust 206724/Z/17/Z, 2017
6 · The paper itself

Abstract

Molecular bacterial load assay (MBLA) rapidly quantifies viable Mycobacterium tuberculosis (Mtb) and may be useful for monitoring treatment response and treatment efficacy. We conducted a prospective study in 56 adults with pulmonary tuberculosis from whom 244 sputum samples were collected before and during the first month of treatment. We evaluated MBLA for early monitoring of bacterial burden and investigated bactericidal activities of first-line therapy in patients infected with drug susceptible and resistant isolates. Mtb loads measured by MBLA and culture were correlated after one-week (r = 0.56) and one-month (r = 0.73) of treatment. Correlations between culture and GeneXpert or microscopy were weaker during treatment. Mtb load by MBLA declined more rapidly than GeneXpert after one-week (2.73 Ct, P < 0.001; 0.95 Ct, P = 0.297, respectively) and one-month (8.94 Ct, P < 0.001; 6.78 Ct, P < 0.001). Mtb loads in multidrug resistant (MDR) infections were significantly greater than in both sensitive and poly/mono-resistance after one-week (P < 0.02) and one-month treatment (P = 0.001). MBLA performed better than GeneXpert and microscopy in comparison to culture for quantifying viable Mtb during treatment. It can be used for monitoring bacterial load during TB treatment, facilitating early detection of treatment failure thus improving outcomes.

Indexed as

Early DiagnosisAdultAntibiotics, AntitubercularBacterial LoadFemaleHumansMaleMiddle AgedMycobacterium tuberculosisPrognosisRetrospective StudiesRNA, BacterialSputumTuberculosis, PulmonaryAntibiotics, AntitubercularRNA, Bacterial16S rRNABactericidal activityMycobacterium tuberculosisTreatmentViable bacterial load

Identifiers

PMID31568973
PMCPMC6899431

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Registered trials

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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.