Evidence map›Paper›PMID 38533658›Full record

ArticleMedical mycology2024

Comparison of the antifungal activity of the pyrimidine analogs flucytosine and carmofur against human-pathogenic dematiaceous fungi.

Rowena Alves Coelho, Fernando Almeida-Silva, Maria Helena Galdino Figueiredo-Carvalho, Vanessa Brito de Souza Rabello, Gabriela Rodrigues de Souza, Maria Cristina da Silva Lourenço, Marcio L Rodrigues, Rodrigo Almeida-Paes

Open access · greenAbstract read
In one paragraph

Article in Medical mycology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

2 citing papers in PubMed, 3 citations in OpenAlex.

  1. Article
  2. Review
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 at 2 institutions in 1 country.

Rowena Alves CoelhoMycology Laboratory, National Institute of Infectious Diseases Evandro Chagas, INI/Fiocruz, Rio de Janeiro, Brazil.ORCID 0000-0002-4255-7486
Fernando Almeida-SilvaMycology Laboratory, National Institute of Infectious Diseases Evandro Chagas, INI/Fiocruz, Rio de Janeiro, Brazil.ORCID 0000-0002-7378-1990
Maria Helena Galdino Figueiredo-CarvalhoMycology Laboratory, National Institute of Infectious Diseases Evandro Chagas, INI/Fiocruz, Rio de Janeiro, Brazil.
Vanessa Brito de Souza RabelloMycology Laboratory, National Institute of Infectious Diseases Evandro Chagas, INI/Fiocruz, Rio de Janeiro, Brazil.
Gabriela Rodrigues de SouzaRPT 11B Bioassay Platform, National Institute of Infectious Diseases Evandro Chagas, INI/Fiocruz, Rio de Janeiro, Brazil.
Maria Cristina da Silva LourençoRPT 11B Bioassay Platform, National Institute of Infectious Diseases Evandro Chagas, INI/Fiocruz, Rio de Janeiro, Brazil.
Marcio L RodriguesCarlos Chagas Institute, Fiocruz, Paraná, Brazil.
Rodrigo Almeida-PaesMycology Laboratory, National Institute of Infectious Diseases Evandro Chagas, INI/Fiocruz, Rio de Janeiro, Brazil.ORCID 0000-0002-6639-6058
Instituto Evandro Chagas · BRUniversidade Federal do Rio de Janeiro · BR

Funding

NIH
6 · The paper itself

Abstract

Chromoblastomycosis (CBM) and pheohyphomycosis (PHM) are the most common implantation mycoses caused by dematiaceous fungi. In the past, flucytosine (5-FC) has been used to treat CBM, but development of resistance is common. Carmofur belongs to the same class as 5-FC and has in vitro inhibitory activity against the main agents of CBM and PHM. The aim of this study was to compare the action of these two pyrimidine analog drugs against CBM and PHM agents. The minimum inhibitory concentration (MIC) and the selectivity index based on cytotoxicity tests of these two drugs against some agents of these mycoses were determined, with carmofur presenting a higher selectivity index than 5-FC. Carmofur demonstrated here synergistic interactions with itraconazole and amphotericin B against Exophiala heteromorpha, Fonsecaea pedrosoi, Fonsecaea monophora, and Fonsecaea nubica strains. Additionally, carmofur plus itraconazole demonstrated here synergism against a Phialophora verrucosa strain. To evaluate the development of carmofur resistance, passages in culture medium containing subinhibitory concentrations of this pyrimidine analog were carried out, followed by in vitro susceptibility tests. Exophiala dermatitidis quickly developed resistance, whereas F. pedrosoi took seven passages in carmofur-supplemented medium to develop resistance. Moreover, resistance was permanent in E. dermatitidis but transient in F. pedrosoi. Hence, carmofur has exhibited certain advantages, albeit accompanied by limitations such as the development of resistance, which was expected as with 5-FC. This underscores its therapeutic potential in combination with other drugs, emphasizing the need for a meticulous evaluation of its application in the fight against dematiaceous fungi.

Indexed as

ChromoblastomycosisMycosesAnimalsAntifungal AgentsChlorocebus aethiopsFlucytosineFungiHumansItraconazoleMicrobial Sensitivity TestsVero CellsAntifungal AgentsFlucytosineItraconazoleantifungal susceptibilitycarmofurChromoblastomycosisdrug repositioningpheohyphomycosis

Identifiers

PMID38533658
PMCPMC11008743
OpenAlexW4393220587

What Socratic 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 Socratic graph.