Evaluation of fluorescent capillary electrophoresis for rapid identification of Candida fungal infections

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00209775%3A_____%2F16%3AN0000016" target="_blank" >RIV/00209775:_____/16:N0000016 - isvavai.cz</a>

Výsledek na webu

<a href="http://jcm.asm.org/content/54/5/1295.full.pdf+html" target="_blank" >http://jcm.asm.org/content/54/5/1295.full.pdf+html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1128/JCM.00118-16" target="_blank" >10.1128/JCM.00118-16</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of fluorescent capillary electrophoresis for rapid identification of Candida fungal infections

Popis výsledku v původním jazyce

Early diagnosis of fungal infection is critical for initiating antifungal therapy and reducing the high mortality rate in immunocompromised patients. In this study, we focused on rapid and sensitive identification of clinically important Candida species, utilizing the variability in the length of the ITS2 rRNA gene and fluorescent capillary electrophoresis (f-ITS2-PCR-CE). The method was developed and optimized on 29 various Candida reference strains from which 26 Candida species were clearly identified, while Candida guilliermondii, C. fermentati, and C. carpophila, which are closely related, could not be distinguished. The method was subsequently validated on 143 blinded monofungal clinical isolates (comprising 26 species) and was able to identify 88% of species unambiguously. This indicated a higher resolution power than the classical phenotypic approach which correctly identified 73%. Finally, the culture-independent potential of this technique was addressed by the analysis of 55 retrospective DNA samples extracted directly from clinical material. The method showed 100% sensitivity and specificity compared to those of the combined results of cultivation and panfungal PCR followed by sequencing used as a gold standard. In conclusion, this newly developed f-ITS2-PCR-CE analytical approach was shown to be a fast, sensitive, and highly reproducible tool for both cul- ture-dependent and culture-independent identification of clinically important Candida strains, including species of the “psilosis” complex.

Název v anglickém jazyce

Evaluation of fluorescent capillary electrophoresis for rapid identification of Candida fungal infections

Popis výsledku anglicky

Early diagnosis of fungal infection is critical for initiating antifungal therapy and reducing the high mortality rate in immunocompromised patients. In this study, we focused on rapid and sensitive identification of clinically important Candida species, utilizing the variability in the length of the ITS2 rRNA gene and fluorescent capillary electrophoresis (f-ITS2-PCR-CE). The method was developed and optimized on 29 various Candida reference strains from which 26 Candida species were clearly identified, while Candida guilliermondii, C. fermentati, and C. carpophila, which are closely related, could not be distinguished. The method was subsequently validated on 143 blinded monofungal clinical isolates (comprising 26 species) and was able to identify 88% of species unambiguously. This indicated a higher resolution power than the classical phenotypic approach which correctly identified 73%. Finally, the culture-independent potential of this technique was addressed by the analysis of 55 retrospective DNA samples extracted directly from clinical material. The method showed 100% sensitivity and specificity compared to those of the combined results of cultivation and panfungal PCR followed by sequencing used as a gold standard. In conclusion, this newly developed f-ITS2-PCR-CE analytical approach was shown to be a fast, sensitive, and highly reproducible tool for both cul- ture-dependent and culture-independent identification of clinically important Candida strains, including species of the “psilosis” complex.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30303 - Infectious Diseases

Projekt

<a href="/cs/project/NT13242" target="_blank" >NT13242: Polymikrobiální biofilm jako příčina chronických močových infekcí a selhávání terapie: kultivační a PCR-DGGE diagnostika, význam a možnosti řešení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Clinical Microbiology

ISSN

0271-9142

e-ISSN

—

Svazek periodika

54

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

1295-1303

Kód UT WoS článku

000374955700021

EID výsledku v databázi Scopus

2-s2.0-84964981045