title: Genotyping of the MTL loci and susceptibility to two antifungal agents of Candida glabrata clinical isolates.
abstract: The opportunistic fungal pathogen Candida glabrata is the second most common isolate from bloodstream infections worldwide and is naturally less susceptible to the antifungal drug fluconazole than other Candida species. C. glabrata is a haploid yeast that contains three mating-type like loci (MTL), although no sexual cycle has been described. Strains containing both types of mating information at the MTL1 locus are found in clinical isolates, but it is thought that strains containing type a information are more common. Here we investigated if a particular combination of mating type information at each MTLlocus is more prevalent in clinical isolates from hospitalized patients in Mexico and if there is a correlation between mating information and resistance to fluconazole and 5-fluorocytosine. We found that while both types of information at MTL1 are equally represented in a collection of 64 clinical isolates, the vast majority of isolates contain a-type information at MTL2 and alpha-type at MTL3. We also found no correlation of the particular combination of mating type information at the three MTL loci and resistance to fluconazole.
authors.affiliation: División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, México.
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Lavaniegos-Sobrino
authors.forename: Candy Y
authors.initials: CY
authors.lastname: Ramírez-Zavaleta
authors.forename: Alfredo
authors.initials: A
authors.lastname: Ponce de León
authors.forename: José
authors.initials: J
authors.lastname: Sifuentes-Osornio
authors.forename: Miriam
authors.initials: M
authors.lastname: Bobadilla-Del Valle
authors.forename: Andrea
authors.initials: A
authors.lastname: Rangel-Cordero
authors.forename: Alejandro
authors.initials: A
authors.lastname: De Las Peñas
authors.forename: Irene
authors.initials: I
authors.lastname: Castaño
mesh_terms: D000935:Antifungal Agents / Q000494:pharmacology*; D041221:Candida glabrata / Q000187:drug effects / Q000235:genetics; D015725:Fluconazole / Q000494:pharmacology*; D005437:Flucytosine / Q000494:pharmacology*; D049770:Genes, Mating Type, Fungal / Q000235:genetics*; D005838:Genotype; D006801:Humans; D008800:Mexico; D008826:Microbial Sensitivity Tests
chemical_list: D000935:Antifungal Agents; D015725:Fluconazole; D005437:Flucytosine