A modified method for experimental candidosis in mice avoiding lethality

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Abstract
A model is presented which selected one out of 150 Candida albicans strains for the evaluation of antifungal agents. The mice were inoculated with 6 x 10(5) CFU of strain 352 into the tail vein. The strain has a moderate phospholipase B (PLB) activity in vitro and was originally isolated from a stool sample from a patient in an intensive care unit. This infection leads to very little suffering in the infected animals during the 6-day observation period. Kidney counts at day 5 after infection can give a first indication for a possible fungistatic mechanism. Possible interesting drugs can then be evaluated by a second set of experiments using a longer observation time to investigate the compounds for fungicidal properties. The model suggests that screening for systemic antifungals by avoiding lethality of mice in the first place can be done.