Related Experiment Video
Updated: Jan 2, 2026

A Soluble Tetrazolium-Based Reduction Assay to Evaluate the Effect of Antibodies on Candida tropicalis Biofilms
Published on: September 16, 2022
[The role of Candida kefyr (C. pseudotropicalis) in reproductive tract infections]
1Zakład Mykologii Instytutu Mikrobiologii AM, Krakowie.
Abstract:
Frequency of appearance of C. kefyr strains, their diagnosis, susceptibility to drugs and importance in pathogenesis of reproductive tract mycoses were investigated. The investigated material consisted of 2717 strains, and there were 67 strains of C. kefyr isolated from vaginal mucous membrane. C. kefyr strains constituted 2.5% of total number of 2717 isolated strains and 8.2% within fungi other than C. albicans species. Vaginal mycosis caused by C. kefyr occurs in presence of Lactobacillus sp. and correct values of pH in vaginal contents, however changing leukocyte number was observed. Clinical symptoms and complaints regarding reproductive tract were present in 47.8% of patients with C. kefyr infections. Investigating susceptibility to antimycotic drugs, regardless of appointed method, low susceptibility of C. kefyr strains to amphotericin B was noted (79% resistant strains). Strain of C. kefyr were sensitive to all remaining drugs.
Insights
Candida kefyr is a rare cause of vaginal mycosis, appearing in 2.5% of yeast isolates. While often asymptomatic, C. kefyr infections can cause symptoms and show resistance to amphotericin B.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Women's Health
Background:
- Candida kefyr is an opportunistic fungal pathogen.
- Reproductive tract mycoses are common gynecological infections.
- Understanding the prevalence and characteristics of less common Candida species is crucial for effective treatment.
Purpose of the Study:
- To investigate the frequency of Candida kefyr (C. kefyr) isolation from the reproductive tract.
- To analyze the clinical significance, including symptoms and pathogenesis, of C. kefyr infections.
- To determine the drug susceptibility profile of C. kefyr strains against common antimycotic agents.
Main Methods:
- Culturing and identification of 2717 yeast strains from vaginal samples.
- Isolation and characterization of 67 C. kefyr strains.
- Antimycotic susceptibility testing of C. kefyr isolates using standard methods.
Main Results:
- C. kefyr accounted for 2.5% of all isolated yeast strains and 8.2% of non-albicans Candida species.
- Infections occurred even with normal vaginal Lactobacillus sp. presence and pH, but with altered leukocyte counts.
- Clinical symptoms were reported in 47.8% of patients with C. kefyr vaginal mycosis.
- A high resistance rate (79%) to amphotericin B was observed, while C. kefyr strains remained sensitive to other tested antimycotics.
Conclusions:
- Candida kefyr is an uncommon cause of vaginal mycosis, often presenting with subtle or no symptoms.
- Despite a normal vaginal environment, C. kefyr can cause symptomatic infections.
- The high resistance to amphotericin B necessitates careful consideration of treatment options for C. kefyr infections.
Related Concept Videos
Bacterial Phylum Chlamydiae
Fungal Phylum Ascomycota
Diversity of Protists II
Diversity of Protists I
Fungal Phylum Microsporidia
Fungal Group Zygomycota

