Interlaboratory evaluation of the Etest® for antifungal susceptibility testing of dermatophytes

被引:23
|
作者
Fernández-Torres, B
Carrillo-Muñoz, A
Ortoneda, M
Pujol, I
Pastor, FJ
Guarro, J
机构
[1] Univ Rovira & Virgili, Inst Estudis Avancats, Fac Med, Unitat Microbiol, E-43201 Reus, Tarragona, Spain
[2] Asesoria Cient & Invest Aplicada, Dept Microbiol, Barcelona 08080, Spain
[3] Hosp Univ St Joan Reus, Microbiol Lab, Tarragona, Spain
关键词
broth microdilution; dermatophytes; Etest (R); in vitro susceptibility;
D O I
10.1080/714043907
中图分类号
R51 [传染病];
学科分类号
100401 ;
摘要
A three- site interlaboratory reproducibility evaluation of the Etest(R) concentration gradient strip method for testing antifungal susceptibilities was conducted using 30 strains of dermatophytes exposed to strips loaded with ketoconazole ( KTZ), itraconazole ( ITZ), amphotericin B ( AMB) and fluconazole ( FCZ). Etest(R) minimal inhibitory concentrations were compared with those obtained using a broth microdilution method. All isolates produced clearly detectable growth at 28 degreesC within 72 - 96 h for reading with the Etest(R) method. The highest interlaboratory agreement between Etest(R) and the microdilution method was shown with FCZ ( 94%), and the lowest was seen with KTZ ( 60%). Overall, agreement between the Etest(R) and microdilution method was variable. It was excellent for AMB ( 97%), good for ITZ ( 80%) and KTZ ( 77%), and low for fluconazole ( 27%).
引用
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页码:125 / 130
页数:6
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