Phenotypes and randomly amplified polymorphic DNA profiles of Candida albicans isolates from root canal infections in a Finnish population

Waltimo, T. M. T., Dassanayake, R. S., Orstavik, D., Haapasalo, M. P. P. and Samaranayake, L. P. (2001) Phenotypes and randomly amplified polymorphic DNA profiles of Candida albicans isolates from root canal infections in a Finnish population. Oral Microbiology and Immunology, 16 2: 106-112. doi:10.1034/j.1399-302X.2001.016002106.x


Author Waltimo, T. M. T.
Dassanayake, R. S.
Orstavik, D.
Haapasalo, M. P. P.
Samaranayake, L. P.
Title Phenotypes and randomly amplified polymorphic DNA profiles of Candida albicans isolates from root canal infections in a Finnish population
Formatted title
Phenotypes and randomly amplified polymorphic DNA profiles of Candida albicans isolates from root canal infections in a Finnish population
Journal name Oral Microbiology and Immunology   Check publisher's open access policy
ISSN 0902-0055
2041-1014
2041-1006
Publication date 2001-04-01
Year available 2001
Sub-type Article (original research)
DOI 10.1034/j.1399-302X.2001.016002106.x
Open Access Status Not yet assessed
Volume 16
Issue 2
Start page 106
End page 112
Total pages 7
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Language eng
Formatted abstract
A total of thirty-seven Candida albicans isolates from root canal infections in a Finnish population were subtyped using phenotypic and genotypic methods. A previously described biotyping method based on the presence of five different enzymes, assimilation of eleven different carbohydrates and boric acid sensitivity of the yeasts was used to determine the phenotype. Commercially available API ZYM and API 20 C test kits were used to determine the presence of enzymes and assimilation of carbohydrates. The sensitivity of the isolates to boric acid was tested by their ability to grow on yeast-nitrogen-agar with incorporated boric acid (1.8 mg · ml-1). Combination of the tests revealed a total of 14 different phenotypes. The majority of the isolates, 26 strains, were classifiable into three major phenotypes: 16 isolates (43.2%) belonged to phenotype A1R, six (16.2%) to A1S and four (10.8%) to B1S. The remaining 11 phenotypes represented only a single isolate each. The randomly amplified polymorphic DNA profiles were used to determine the genotypes. For this purpose two different primers, RSD6 and RSD12 were used to develop a combination randomly amplified polymorphic DNA profile for each isolate. Altogether 31 genotypes were noted among the 37 isolates, of which only three pairs of isolates presented with congruent phenotypic and genotypic profiles. The heterogeneity of both the phenotypic and randomly amplified polymorphic DNA profiles of C. albicans isolates from root canal infections is akin to previous reports from other oral and non-oral sources in different geographic locales.
Keyword Candida albicans
Genotype
Phenotype
Randomly amplified polymorphic DNA
Root canal infection
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Dentistry Publications
 
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