Abstract
A duplex Real Time PCR (RT-PCR) assay for detecting DNA of members of the genus Fusarium has been developed and validated by using two mouse models of invasive infection. The duplex RT-PCR technique employed two specific molecular beacon probes targeting a highly conserved region of the fungal rDNA gene. This technique showed a detection limit of 10 fg DNA per μl of sample and a specificity of 100%. The sensitivity in a total of 48 samples from a murine model of Fusarium solani infection was 93.9% for lung tissues and 86.7% for serum samples. In comparison, the sensitivity in a total of 45 samples of a F. oxysporum murine model infection was 87% for lung tissues and 42.8% for serum samples. This molecular technique could be a reliable method for the quantification and the evaluation of the disease in animal models and for the clinical diagnosis of fusariosis.
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