Evidence map›Paper›PMID 10582883›Full record

ArticleAntimicrobial agents and chemotherapy1999

High-dose isoniazid therapy for isoniazid-resistant murine Mycobacterium tuberculosis infection.

M H Cynamon, Y Zhang, T Harpster, S Cheng, M S DeStefano

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
0.4field-weighted citation impact, top 37% 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

21 citing papers in PubMed, 58 citations in OpenAlex.

  1. Trial
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  5. Treating tuberculosis with high doses of anti-TB drugs: mechanisms and outcomes.Annals of clinical microbiology and antimicrobials · 2017
    Review
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  15. Old drugs, new purpose: retooling existing drugs for optimized treatment of resistant tuberculosis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2012
    Review
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  17. Article
  18. Review
  19. Article
  20. Minimal inhibitory concentration of isoniazid in isoniazid-resistant Mycobacterium tuberculosis isolates from children.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2007
    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

5 authors at 1 institution in 1 country.

M H CynamonDepartment of Medicine, Veterans Affairs Medical Center, and SUNY Health Science Center, Syracuse, New York 13210, USA. Cynamon.Michael@Sycrause.VA.GOV
Y Zhang
T Harpster
S Cheng
M S DeStefano
Johns Hopkins University · US

Funding

SYNTHESIS OF INHIBITORS OF RHAMNOSE AND GALACTOSE METABOLISMU19AI040972 · NIAID · NATIONAL JEWISH HEALTH · PI WELCH, J · 1996 to 2000
$74k
NIAID NIH HHS U19-AI 40972
6 · The paper itself

Abstract

The use of isoniazid (INH) for the treatment of INH-resistant Mycobacterium tuberculosis infection has been controversial. The purpose of the present studies was to determine if there is a dose response with INH for INH-susceptible M. tuberculosis Erdman (ATCC 35801), and whether high-dose INH (100 mg/kg of body weight) was more effective than standard-dose INH (25 mg/kg) for therapy of tuberculosis infections caused by INH-resistant mutants of M. tuberculosis Erdman. Six-week-old CD-1 mice were infected with approximately 10(7) viable mycobacteria. Early control groups of infected but untreated mice were euthanized by CO(2) inhalation 1 week later when treatment was initiated. INH (25, 50, 75, and 100 mg/kg) was given by gavage 5 days/week for 4 weeks. Late control groups of untreated mice and treated mice were sacrificed 2 days after the last dose of drug. Spleens and right lungs were removed aseptically and homogenized, and viable cell counts were determined by titration on 7H10 agar plates. In the next study, INH at 100 mg/kg was compared to INH at 25 mg/kg against an isogenic mutant of M. tuberculosis Erdman (INH MIC, 2 microg/ml) and the parent strain. This mutant was found to have a mutation in the KatG protein (Phe to Leu at position 183). In the first study, there was no dose response with increasing doses of INH. In the second study, there was no significant difference between the reduction of viable cell counts for mice treated with INH at 100 mg/kg and that for mice treated with INH at 25 mg/kg (parent or INH-resistant mutant). These preliminary results suggest that INH may be useful in combination therapy of M. tuberculosis infections caused by low-level INH-resistant organisms (INH MICs, 0.2 to 5 microg/ml) and that higher doses of INH are unlikely to be more efficacious than the standard 300-mg/day dose.

Indexed as

AnimalsAntitubercular AgentsCulture MediaDose-Response Relationship, DrugDrug Resistance, MicrobialFemaleGenes, BacterialIsoniazidLungMiceMicrobial Sensitivity TestsMycobacterium tuberculosisSpleenTuberculosisAntitubercular AgentsCulture MediaIsoniazid

Identifiers

PMID10582883
PMCPMC89588
OpenAlexW2165963882

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.