Evidence map›Paper›PMID 23884993›Full record

ArticleJournal of clinical microbiology2013

Multidrug-resistant tuberculosis in panama is driven by clonal expansion of a multidrug-resistant Mycobacterium tuberculosis strain related to the KZN extensively drug-resistant M. tuberculosis strain from South Africa.

Fedora Lanzas, Petros C Karakousis, James C Sacchettini, Thomas R Ioerger

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 2 pooled it
3.6field-weighted citation impact, top 7% 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

23 citing papers in PubMed, 2 syntheses or guidelines pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Heterogeneity of Mycobacterium tuberculosis Strains Circulating in Panama's Western Region.The American journal of tropical medicine and hygiene · 2023
    Article
  4. Article
  5. Article
  6. Low-Level Rifampin Resistance andJournal of clinical microbiology · 2021
    Article
  7. Genomic Analysis of Multidrug-ResistantFrontiers in genetics · 2021
    Article
  8. Genetic Diversity inAnnual review of genetics · 2020
    Review
  9. Circulation ofPathogens and global health · 2019
    Review
  10. Global expansion ofScience advances · 2018
    Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Whole genome sequencing to complement tuberculosis drug resistance surveys in Uganda.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2016
    Article
  16. Article
  17. Article
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  19. 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

4 authors at 3 institutions in 2 countries.

Fedora LanzasInstituto Conmemorativo Gorgas de Estudios de la Salud, Panama, Republic of Panama.
Petros C Karakousis
James C Sacchettini
Thomas R Ioerger
Texas A&M University · USInstituto Conmemorativo Gorgas de Estudios de la Salud · PAJohns Hopkins University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Multidrug-resistant tuberculosis (MDR-TB) is a significant health problem in Panama. The extent to which such cases are the result of primary or acquired resistance and the strain families involved are unknown. We performed whole-genome sequencing of a collection of 66 clinical MDR isolates, along with 31 drug-susceptible isolates, that were isolated in Panama between 2001 and 2010; 78% of the MDR isolates belong to the Latin American-Mediterranean (LAM) family. Drug resistance mutations correlated well with drug susceptibility profiles. To determine the relationships among these strains and to better understand the acquisition of resistance mutations, a phylogenetic tree was constructed based on a genome-wide single-nucleotide polymorphism analysis. The phylogenetic tree shows that the isolates are highly clustered, with a single strain (LAM9-c1) accounting for nearly one-half of the MDR isolates (29/66 isolates). The LAM9-c1 strain was most prevalent among male patients of working age and was associated with high mortality rates. Members of this cluster all share identical mutations conferring resistance to isoniazid (KatG S315T mutation), rifampin (RpoB S531L mutation), and streptomycin (rrs C517T mutation). This evidence of primary resistance supports a model in which MDR-TB in Panama is driven by clonal expansion and ongoing transmission of several strains in the LAM family, including the highly successful MDR strain LAM9-c1. The phylogenetic analysis also shows that the LAM9-c1 strain is closely related to the KwaZulu-Natal (KZN) extensively drug-resistant TB strain identified in KwaZulu-Natal, South Africa. The LAM9-c1 and KZN strains likely arose from a recent common ancestor that was transmitted between Panama and South Africa and had the capacity to tolerate an accumulation of multiple resistance mutations.

Indexed as

AdolescentAdultAgedAged, 80 and overBacterial ProteinsCluster AnalysisDNA, BacterialDrug Resistance, Multiple, BacterialFemaleGenome, BacterialHumansMaleMiddle AgedMolecular EpidemiologyMolecular Sequence DataMutant ProteinsBacterial ProteinsDNA, BacterialMutant Proteins

Identifiers

PMID23884993
PMCPMC3811646
OpenAlexW2002134710

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.