Evidence map›Paper›PMID 22170923›Full record

ArticleJournal of clinical microbiology2012

Real-time PCR and high-resolution melt analysis for rapid detection of Mycobacterium leprae drug resistance mutations and strain types.

Wei Li, Masanori Matsuoka, Masanori Kai, Pratibha Thapa, Saraswoti Khadge, Deanna A Hagge, Patrick J Brennan, Varalakshmi Vissa

Abstract readEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Antimicrobial resistance in leprosy: results of the first prospective open survey conducted by a WHO surveillance network for the period 2009-15.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2018
    Article
  7. Mutations ofEthiopian journal of health sciences · 2018
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Mycobacterium leprae in Colombia described by SNP7614 in gyrA, two minisatellites and geography.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2013
    Article
  13. Sensitivity of different DNA extraction methods and PCR to detect resistance in patients with leprosy stratified by the bacilloscopic index.The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases
    Article
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.

Wei LiDepartment of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado, USA.
Masanori Matsuoka
Masanori Kai
Pratibha Thapa
Saraswoti Khadge
Deanna A Hagge
Patrick J Brennan
Varalakshmi Vissa

Funding

Molecular Epidemiology of LeprosyR01AI063457 · NIAID · COLORADO STATE UNIVERSITY-FORT COLLINS · PI VISSA, VARALAKSHMI D · 2005 to 2010
$1.9M
Leprosy Research Support-Post Genome -26625469N01AI025469 · NIAID · Colorado State University · 2004 to 2004
–
NIAID NIH HHS AI-063457NIAID NIH HHS N01 AI025469NIAID NIH HHS N01-AI-25469NIAID NIH HHS R01 AI063457
6 · The paper itself

Abstract

Drug resistance surveillance and strain typing of Mycobacterium leprae are necessary to investigate ongoing transmission of leprosy in regions of endemicity. To enable wider implementation of these molecular analyses, novel real-time PCR-high-resolution melt (RT-PCR-HRM) assays without allele-specific primers or probes and post-PCR sample handling were developed. For the detection of mutations within drug resistance-determining regions (DRDRs) of folP1, rpoB, and gyrA, targets for dapsone, rifampin, and fluoroquinolones, real-time PCR-HRM assays were developed. Wild-type and drug-resistant mouse footpad-derived strains that included three folP1, two rpoB, and one gyrA mutation types in a reference panel were tested. RT-PCR-HRM correctly distinguished the wild type from the mutant strains. In addition, RT-PCR-HRM analyses aided in recognizing samples with mixed or minor alleles and also a mislabeled sample. When tested in 121 sequence-characterized clinical strains, HRM identified all the folP1 mutants representing two mutation types, including one not within the reference panel. The false positives (<5%) could be attributed to low DNA concentration or PCR inhibition. A second set of RT-PCR-HRM assays for identification of three previously reported single nucleotide polymorphisms (SNPs) that have been used for strain typing were developed and validated in 22 reference and 25 clinical strains. Real-time PCR-HRM is a sensitive, simple, rapid, and high-throughput tool for routine screening known DRDR mutants in new and relapsed cases, SNP typing, and detection of minor mutant alleles in the wild-type background at lower costs than current methods and with the potential for quality control in leprosy investigations.

Indexed as

Drug Resistance, BacterialMutation, MissenseAnimalsAnti-Bacterial AgentsHumansMiceMicrobial Sensitivity TestsMolecular Diagnostic TechniquesMycobacterium lepraePolymorphism, Single NucleotideReal-Time Polymerase Chain ReactionSensitivity and SpecificityTransition TemperatureAnti-Bacterial Agents

Identifiers

PMID22170923
PMCPMC3295127

What OpenQuestion holds

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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.