Evidence map›Paper›PMID 16455912›Full record

ArticleJournal of clinical microbiology2006

Rapid susceptibility testing of medically important zygomycetes by XTT assay.

Charalampos Antachopoulos, Joseph Meletiadis, Emmanuel Roilides, Tin Sein, Thomas J Walsh

Open access · greenAbstract readEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 15% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Unveiling the antifungal mechanisms of CTP, a new copper(II)-theophylline/1,10-phenanthroline complex, on drug-resistant non-albicans Candida species.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2024
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. CotH3 mediates fungal invasion of host cells during mucormycosis.The Journal of clinical investigation · 2014
    Article
  11. Article
  12. Rhino-orbital-cerebral mucormycosis.Current infectious disease reports · 2012
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Mucormycosis in immunochallenged patients.Journal of emergencies, trauma, and shock · 2008
    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 2 institutions in 2 countries.

Charalampos AntachopoulosPediatric Oncology Branch, National Cancer Institute, CRC, Rm. 1-5750, MSC 1100, 10 Center Drive, Bethesda, MD 20892, USA.
Joseph Meletiadis
Emmanuel Roilides
Tin Sein
Thomas J Walsh
National Cancer Institute · USHippocration General Hospital · GR

Funding

Treatment of Infections in Immunocompromised Children with Cancer, HematopoieticZ01SC006830 · SC · DIVISION OF CLINICAL SCIENCES - NCI · PI WALSH, THOMAS J. · 1996 to 2008
$5.8M
Treatment of Infections in Immunocompromised ChildrenZIASC006830 · NCI · DIVISION OF CLINICAL SCIENCES - NCI · PI WALSH, THOMAS J. · 2009 to 2009
$2.4M
Intramural NIH HHS
6 · The paper itself

Abstract

The XTT colorimetric assay quantifies fungal growth by measuring fungal metabolism and has been used successfully for susceptibility testing of Aspergillus species after 24 and 48 h of incubation. In the present study using 14 clinical isolates of Zygomycetes (Rhizopus oryzae [5 isolates], Cunninghamella spp. [3 isolates], Mucor spp. [3 isolates], and Absidia corymbifera [3 isolates]), significant metabolic activity was demonstrated before visual or spectrophotometric detection of fungal growth by performing the XTT assay as early as 6 h after inoculation. Testing of susceptibility to amphotericin B, posaconazole, and voriconazole was subsequently performed using the XTT method (100 microg/ml XTT, 25 microM menadione) at 6, 8, or 12 h after inoculation and the CLSI (formerly NCCLS) M38-A method with visual and spectrophotometric MIC determinations at 24 h after inoculation. Concentration-effect curves obtained with the use of the E(max) model (a sigmoid curve with variable slope) were comparable between the early XTT and spectrophotometric readings at 24 h. Complete inhibition of early metabolic activity with the azoles was delayed in comparison to that with amphotericin B. Using appropriate cutoff levels, agreement was demonstrated between the early XTT and 24-h spectrophotometric or visual readings. In particular, for MIC-0 (the lowest drug concentration showing absence of visual growth) of amphotericin B, overall agreement levels were 90 to 93% for the 6-h XTT assay and 100% for the 8- and 12-h time points. For MIC-0 of posaconazole, agreement levels were 86% for the 6-h XTT and 93 to 100% for the 8- and 12-h time points. The overall agreement levels for MIC-0 and MIC-2 (the lowest drug concentration showing prominent reduction of growth compared with the control well) of voriconazole (compared with 24-h spectrophotometric readings) were 93 to 98% for the 8- and 12-h XTT assays. These results support the use of the XTT method for rapid MIC determination for Zygomycetes.

Indexed as

Antifungal AgentsBiomassHumansMicrobial Sensitivity TestsMucoralesMucormycosisTetrazolium SaltsTime Factors2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-5-((phenylamino)carbonyl)-2H-tetrazolium hydroxideAntifungal AgentsTetrazolium Salts

Identifiers

PMID16455912
PMCPMC1392685
OpenAlexW2145158961

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.