PCR fingerprinting: a convenient molecular tool to distinguish betweenCandida dubliniensisandCandida albicans

2001 ◽  
Vol 39 (2) ◽  
pp. 185-193 ◽  
Author(s):  
W. Meyer ◽  
K. Maszewska ◽  
T. C. Sorrell
Author(s):  
Thayanidhi Premamalini ◽  
Vijayaraman Rajyoganandh ◽  
Ramaraj Vijayakumar ◽  
Hemanth Veena ◽  
Anupma Jyoti Kindo ◽  
...  

Abstract Objective The aim of this study was to identify and isolate Trichosporon asahii (T. asahii) from clinical samples and to assess the genetic relatedness of the most frequently isolated strains of T. asahii using random amplification of polymorphic DNA (RAPD) primers GAC-1 and M13. Methods All the clinical samples that grew Trichosporon species, identified and confirmed by polymerase chain reaction (PCR) using Trichosporon genus-specific primers, were considered for the study. Confirmation of the species T. asahii was carried out by T. asahii-specific PCR. Fingerprinting of the most frequently isolated T. asahii isolates was carried out by RAPD using random primers GAC-1 and M13. Results Among the 72 clinical isolates of Trichosporon sp. confirmed by Trichosporon-specific PCR, 65 were found to be T. asahii as identified by T. asahii-specific PCR. Fingerprinting of the 65 isolates confirmed as T. asahii using GAC-1 RAPD primer yielded 11 different patterns, whereas that of M13 primer produced only 5 patterns. The pattern I was found to be the most predominant type (29.2%) followed by pattern III (16.9%) by GAC-1 primer. Conclusions This study being the first of its kind in India on strain typing of T. asahii isolates by adopting RAPD analysis throws light on genetic diversity among the T. asahii isolates from clinical samples. Fingerprinting by RAPD primer GAC-1 identified more heterogeneity among the T. asahii isolates than M13.


2003 ◽  
Vol 94 (6) ◽  
pp. 1108-1119 ◽  
Author(s):  
A. Cherif ◽  
L. Brusetti ◽  
S. Borin ◽  
A. Rizzi ◽  
A. Boudabous ◽  
...  

2008 ◽  
Vol 12 (6) ◽  
pp. e129-e130 ◽  
Author(s):  
Alexander Piñón Ramos ◽  
Belsy Acosta Herrera ◽  
Odalys Valdés Ramírez ◽  
Clara Savón Valdés ◽  
Angel Goyenechea Hernández ◽  
...  
Keyword(s):  

1994 ◽  
Vol 20 (4) ◽  
pp. 235-247 ◽  
Author(s):  
Alex van Belkum ◽  
René Bax ◽  
Piet J.C. van der Straaten ◽  
Wim G.V. Quint ◽  
Etel Veringa

2014 ◽  
Vol 52 (7) ◽  
pp. 4124-4134 ◽  
Author(s):  
Joana Šalomskienė ◽  
Asta Abraitienė ◽  
Dovilė Jonkuvienė ◽  
Irena Mačionienė ◽  
Jūratė Repečkienė

Author(s):  
Marcelo Teruyuki Matsumoto ◽  
Ana Marisa Fusco-Almeida ◽  
Lilian Cristiane Baeza ◽  
Márcia de Souza Carvalho Melhem ◽  
Maria José Soares Medes-Giannini

The basidiomycetous yeast Cryptococcus neoformans is an important fungal pathogen mainly in immunocompromised patients. In this study, 47 clinical isolates of C. neoformans from regions of São Paulo State were studied serologically by using the Crypto Check Iatron RM 304-K kit, their genetic diversity was estimated by PCR-fingerprinting with a microsatellite-specific sequence (GACA)4, RAPD with primer 6 (Amersham Pharmacia Biotech), PCR-restriction fragment length polymorphism (RFLP) analysis of the phospholipase B gene (PLB1) digested with AvaI and mating type analysis by PCR. All 47 strains isolated from HIV positive patients included in this study were serotype A and MATalpha. The majority of the isolates (45/47) were VNI and only two were VNII by PCR-fingerprinting and PCR-RFLP analysis. High degree of homogeneity was observed when (GACA)4 was used, being highly correlated (> 0.9). In contrast, the RAPD analysis was more heterogeneous with higher number of molecular profiles. By PCR-RFLP, no new molecular type was found, enhancing the suggestion that the differences based on conserved gene as PLB1, can be resultant of ongoing divergent evolution within the C. neoformans complex, into the current eight subtypes. Our results furnish new information on the molecular epidemiology of C. neoformans in the southeast region of Brazil.


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