Evidence map›Paper›PMID 18528520›Full record

ArticleInfectious diseases in obstetrics and gynecology2008

Tetracycline effects on Candida albicans virulence factors.

Logan McCool, Hanh Mai, Michael Essmann, Bryan Larsen

Open access · hybridAbstract read
In one paragraph

Article in Infectious diseases in obstetrics and gynecology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 25% 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

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Guideline
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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

4 authors at 1 institution in 1 country.

Logan McCoolInfectious Disease Research Laboratory, Ryan Hall 209, Des Moines University, 3200 Grand Avenue, Des Moines, Iowa 50312, USA.
Hanh Mai
Michael Essmann
Bryan Larsen
Des Moines University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectTo determine if tetracycline, previously reported to increase the probability of developing symptomatic vaginal yeast infections, has a direct effect on Candida albicans growth or induction of virulent phenotypes.

methodIn vitro, clinical isolates of yeast were cultivated with sublethal concentrations of tetracycline and yeast cell counts, hyphal formation, drug efflux pump activity, biofilm production, and hemolysin production were determined by previously reported methods.

resultsTetracycline concentrations above 150 microg/mL inhibited Candida albicans, but at submicrogram/mL, a modest growth increase during the early hours of the growth curve was observed. Tetracycline did not inhibit hyphal formation at sublethal concentrations. Hypha formation appeared augmented by exposure to tetracycline in the presence of chemically defined medium and especially in the presence of human serum. Efflux pump CDR1 was upregulated and a nonsignificant trend toward increased biofilm formation was noted.

conclusionTetracycline appears to have a small growth enhancing effect and may influence virulence through augmentation of hypha formation, and a modest effect on drug efflux and biofilm formation, although tetracycline did not affect hemolysin. It is not clear if the magnitude of the effect is sufficient to attribute vaginitis following tetracycline treatment to direct action of tetracycline on yeast.

Indexed as

Anti-Bacterial AgentsBiofilmsCandida albicansCulture MediaFemaleFungal ProteinsHemolysin ProteinsHumansHyphaeMembrane Transport ProteinsTetracyclineUp-RegulationVirulence FactorsAnti-Bacterial AgentsCDR1 protein, Candida albicansCulture MediaFungal ProteinsHemolysin ProteinsMembrane Transport ProteinsTetracyclineVirulence Factors

Identifiers

PMID18528520
PMCPMC2408679
OpenAlexW2084017609

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.