Evidence map›Paper›PMID 23593945›Full record

ArticleAmerican journal of respiratory and critical care medicine2013

Contribution of moxifloxacin or levofloxacin in second-line regimens with or without continuation of pyrazinamide in murine tuberculosis.

Zahoor Ahmad, Sandeep Tyagi, Austin Minkowski, Charles A Peloquin, Jacques H Grosset, Eric L Nuermberger

Open access · greenAbstract read
In one paragraph

Article in American journal of respiratory and critical care medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
6.1field-weighted citation impact, top 4% 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

32 citing papers in PubMed, 53 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Eradication of Drug-TolerantMicroorganisms · 2023
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Pyrazinamide Is a Two-Edged Sword: Do WHO Guidelines Matter?Antimicrobial agents and chemotherapy · 2018
    Article
  15. Review
  16. Article
  17. Of Testing and Treatment: Implications of Implementing New Regimens for Multidrug-Resistant Tuberculosis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2017
    Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Zahoor AhmadIndian Institute of Integrative Medicine, Sanat Nagar, Srinagar, India.
Sandeep Tyagi
Austin Minkowski
Charles A Peloquin
Jacques H Grosset
Eric L Nuermberger
Johns Hopkins University · USIndian Institute of Integrative Medicine · INUniversity of Florida · US

Funding

Defining Moxifloxacin as a First-line TB DrugK08AI058993 · NIAID · JOHNS HOPKINS UNIVERSITY · PI NUERMBERGER, ERIC L · 2004 to 2008
$623k
NIAID NIH HHS K08 AI058993NIAID NIH HHS K08-AI58993NIAID NIH HHS N01 AI040007
6 · The paper itself

Abstract

rationaleHigh-dose levofloxacin (L) (1,000 mg) was as active as moxifloxacin (M) (400 mg) in an early bactericidal activity trial, suggesting these fluoroquinolones could be used interchangeably. Whether pyrazinamide (Z) contributes sterilizing activity beyond the first 2 months in fluoroquinolone-containing second-line regimens remains unknown.

objectivesWe compared the efficacy of M and high-dose L alone or in combination with ethionamide (Et), amikacin (A), and Z given for 2 or 7 months.

methodsA pharmacokinetic study was performed to determine the L dose equivalent to 1,000 mg in humans. Treatment started 2 weeks after aerosol infection with Mycobacterium tuberculosis H37Rv. Mice received M or L alone or in combination with 2 months of EtZA followed by 5 months of Et or EtZ. MEASUREMENTS AND MAIN

resultsAfter 2 months of treatment, lung colony-forming unit (CFU) counts were similar in mice receiving either fluoroquinolone alone, but, after 4 and 5 months, CFU counts were 2 log10 lower in mice receiving M. Mice receiving 2MEtZA/3MEt and 2LEtZA/3LEt had 1.0 and 2.7 log10 lung CFUs, respectively. When Z was given throughout, both regimens rendered mice culture negative by 5 months, and most mice did not relapse after 7 months of treatment, with fewer relapses observed in the M group after 6 and 7 months of treatment.

conclusionsIn murine tuberculosis, M had superior efficacy compared with L despite lower serum drug exposures and may remain the fluoroquinolone of choice for second-line regimens. Z contributed substantial sterilizing activity beyond 2 months in fluoroquinolone-containing second-line regimens, largely compensating for L's weaker activity.

Indexed as

LevofloxacinAnalysis of VarianceAnimalsAnti-Bacterial AgentsAntitubercular AgentsAza CompoundsDisease Models, AnimalDrug Administration ScheduleDrug Therapy, CombinationFemaleFluoroquinolonesMiceMice, Inbred BALB CMoxifloxacinOfloxacinPyrazinamideAnti-Bacterial AgentsAntitubercular AgentsAza CompoundsFluoroquinolonesLevofloxacinMoxifloxacinOfloxacinPyrazinamideQuinolines

Identifiers

PMID23593945
PMCPMC3735243
OpenAlexW2148919591

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.