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Use of peptide nucleic acid-fluorescence in situ hybridization for definitive, rapid identification of five common Candida species. 2007

Megan E Reller, and Amanda B Mallonee, and Nicole P Kwiatkowski, and William G Merz
Medical Microbiology Division, Department Pathology, Meyer B1-193, The Johns Hopkins Hospital, Baltimore, MD 21287-7093, USA.

We investigated a 2.5-h peptide nucleic acid-fluorescence in situ hybridization (PNA-FISH) assay with five Candida species-specific probes to identify Candida colonies and compared it to standard 2-h to 5-day phenotypic identification methods. Suspensions were made and slides were prepared and read for fluorescence per the manufacturer's instructions. Sensitivity was 99% (109/110), and specificity was 99% (129/130). PNA-FISH can rapidly identify those Candida species isolated most frequently.

UI MeSH Term Description Entries
D002175 Candida A genus of yeast-like mitosporic Saccharomycetales fungi characterized by producing yeast cells, mycelia, pseudomycelia, and blastophores. It is commonly part of the normal flora of the skin, mouth, intestinal tract, and vagina, but can cause a variety of infections, including CANDIDIASIS; ONYCHOMYCOSIS; VULVOVAGINAL CANDIDIASIS; and CANDIDIASIS, ORAL (THRUSH). Candida guilliermondii var. nitratophila,Candida utilis,Cyberlindnera jadinii,Hansenula jadinii,Lindnera jadinii,Monilia,Pichia jadinii,Saccharomyces jadinii,Torula utilis,Torulopsis utilis,Monilias
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015341 Nucleic Acid Probes Nucleic acid which complements a specific mRNA or DNA molecule, or fragment thereof; used for hybridization studies in order to identify microorganisms and for genetic studies. Acid Probes, Nucleic,Probes, Nucleic Acid
D017404 In Situ Hybridization, Fluorescence A type of IN SITU HYBRIDIZATION in which target sequences are stained with fluorescent dye so their location and size can be determined using fluorescence microscopy. This staining is sufficiently distinct that the hybridization signal can be seen both in metaphase spreads and in interphase nuclei. FISH Technique,Fluorescent in Situ Hybridization,Hybridization in Situ, Fluorescence,FISH Technic,Hybridization in Situ, Fluorescent,In Situ Hybridization, Fluorescent,FISH Technics,FISH Techniques,Technic, FISH,Technics, FISH,Technique, FISH,Techniques, FISH
D020135 Peptide Nucleic Acids DNA analogs containing neutral amide backbone linkages composed of aminoethyl glycine units instead of the usual phosphodiester linkage of deoxyribose groups. Peptide nucleic acids have high biological stability and higher affinity for complementary DNA or RNA sequences than analogous DNA oligomers. Peptide Nucleic Acid,Acid, Peptide Nucleic,Acids, Peptide Nucleic,Nucleic Acid, Peptide,Nucleic Acids, Peptide

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