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Comparative in vitro fungicidal activity of echinocandins against C andida albicans in peritoneal dialysis fluids
Author(s) -
Tobudic Selma,
Forstner Christina,
Schranz Heidelinde,
Poeppl Wolfgang,
Vychytil Andreas,
Burgmann Heinz
Publication year - 2013
Publication title -
mycoses
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 69
eISSN - 1439-0507
pISSN - 0933-7407
DOI - 10.1111/myc.12079
Subject(s) - echinocandins , caspofungin , anidulafungin , peritoneal dialysis , microbiology and biotechnology , candida albicans , micafungin , corpus albicans , amphotericin b , minimum inhibitory concentration , chemistry , pharmacology , medicine , antibiotics , biology , antifungal
Summary The peritoneal dialysis ( PD )‐associated peritonitis caused by fungi is a relatively rare, but very serious disease. PD fluids ( PDFs ) affect inhibitory efficacy on the microorganisms' growth, which may compromise the affectivity of some antimicrobials. The purpose of this study was to investigate in vitro the fungicidal effectiveness of echinocandins in diverse PDFs . The fungicidal efficacy of caspofungin ( CAS ), anidulafungin ( ANA ), micafungin ( MYC ) against five clinical isolates of C andida albicans was studied in the different PDFs using time‐kill curves. As control substance amphotericin B was used. Echinocandins showed slower and reduced killing of C . albicans in PDFs when compared with the time‐kill curves in control bouillon. At concentration of 8 × minimal inhibitory concentration ( MIC ) the greatest reduction in the growth of C . albicans was seen by ANA in lactate‐buffered Nutrineal PD4 ® with 1.1% amino acid (2.33 ± 0.52 log 10 CFU ml −1 ), and by CAS and MYC in lactate‐buffered Dianeal PD4 ® with 1.36% glucose (2.36 ± 0.89 log 10 CFU ml −1 and 2.36 ± 0.99 log 10 CFU ml −1 respectively). Using high concentration of 128 × MIC echinocandins achieved fungicidal effect in all PDFs . PDFs may significantly impair the activities of echinocandins, but fungicidal activity of drugs can be achieved at high concentration of 128 × MIC .