Evidence map›Paper›PMID 21844321›Full record

ArticleAntimicrobial agents and chemotherapy2011

Clofazimine analogs with efficacy against experimental tuberculosis and reduced potential for accumulation.

Yu Lu, Meiqin Zheng, Bin Wang, Lei Fu, Weijie Zhao, Peng Li, Jian Xu, Hui Zhu, Haixia Jin, Dali Yin and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 8% 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

55 citing papers in PubMed, 1 synthesis or guideline pooled it, 170 citations in OpenAlex.

  1. Pooled it
  2. ComparativeMicrobiology spectrum · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. TargetingRSC medicinal chemistry · 2023
    Review
  8. Microbiology spectrum · 2023
    Article
  9. Article
  10. Clofazimine for the treatment of tuberculosis.Frontiers in pharmacology · 2023
    Review
  11. Targeting the cytochrome bcMolecular diversity · 2022
    Review
  12. Article
  13. Article
  14. Antimicrobial agents and chemotherapy · 2021
    Article
  15. Antimicrobial agents and chemotherapy · 2021
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

13 authors at 4 institutions in 2 countries.

Yu LuDepartment of Pharmacology, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing Chest Hospital, Capital Medical University, Machang 97, Tongzhou District, Beijing 101149, China. luyu4876@hotmail.com
Meiqin Zheng
Bin Wang
Lei Fu
Weijie Zhao
Peng Li
Jian Xu
Hui Zhu
Haixia Jin
Dali Yin
Haihong Huang
Anna M Upton
Zhenkun Ma
Beijing Chest Hospital · CNCapital Medical University · CNShanghai Institute of Materia Medica · CNTB Alliance · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The global tuberculosis crisis urgently demands new, efficacious, orally available drugs with the potential to shorten and simplify the long and complex treatments for drug-sensitive and drug-resistant disease. Clofazimine, a riminophenazine used for many years to treat leprosy, demonstrates efficacy in animal models of tuberculosis via a novel mode of action. However, clofazimine's physicochemical and pharmacokinetic properties contribute to side effects that limit its use; in particular, an extremely long half-life and propensity for tissue accumulation together with clofazimine's dye properties leads to unwelcome skin discoloration. We recently conducted a systematic structure-activity study of more than 500 riminophenazine analogs for anti-Mycobacterium tuberculosis activity. We describe here the characteristics of 12 prioritized compounds in more detail. The new riminophenazine analogs demonstrated enhanced in vitro activity compared to clofazimine against replicating M. tuberculosis H37Rv, as well as panels of drug-sensitive and drug-resistant clinical isolates. The new compounds demonstrate at least equivalent activity compared to clofazimine against intracellular M. tuberculosis and, in addition, most of them were active against nonreplicating M. tuberculosis. Eleven of these more water-soluble riminophenazine analogs possess shorter half-lives than clofazimine when dosed orally to mice, suggesting that they may accumulate less. Most importantly, the nine compounds that progressed to efficacy testing demonstrated inhibition of bacterial growth in the lungs that is superior to the activity of an equivalent dose of clofazimine when administered orally for 20 days in a murine model of acute tuberculosis. The efficacy of these compounds, along with their decreased potential for accumulation and therefore perhaps also for tissue discoloration, warrants further study.

Indexed as

Administration, OralAnimalsAntitubercular AgentsCell LineChlorocebus aethiopsClofazimineMaleMiceMice, Inbred BALB CMicrobial Sensitivity TestsMycobacterium tuberculosisTuberculosisVero CellsAntitubercular AgentsClofazimine

Identifiers

PMID21844321
PMCPMC3195009
OpenAlexW2041168948

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.