JAC Advance Access originally published online on March 24, 2009
Journal of Antimicrobial Chemotherapy 2009 63(6):1152-1155; doi:10.1093/jac/dkp095
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Original research |
High genetic diversity and poor in vitro response to antifungals of clinical strains of Fusarium oxysporum
Mycology Unit, Medical School, IISPV, Universitat Rovira i Virgili, Reus, Spain
Received 7 January 2009; returned 10 February 2009; revised 20 February 2009; accepted 24 February 2009
* Corresponding author. Unitat de Microbiologia, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Carrer Sant Llorenç 21, 43201 Reus, Spain. Tel: +34-977-759359; Fax: +34-977-759322; E-mail: josep.guarro{at}urv.cat
Objectives: The aim of this study was to determine the genetic variability of clinical isolates morphologically identified as Fusarium oxysporum and to assess if there are differences in antifungal susceptibility among the possible genetic clades obtained.
Methods: Twenty-eight isolates were molecularly characterized by sequence analysis of the elongation factor 1
gene. The antifungal susceptibilities of these isolates to 11 antifungal drugs were tested using a microdilution method.
Results and conclusions: We obtained four different phylogenetic clades in the molecular study. Although all the antifungals tested showed poor activity against all the genetic clades, terbinafine showed the best results.
Keywords:
Fusarium
,
molecular identification
,
elongation factor 1
gene
,
antifungal susceptibility