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The postantifungal and paradoxical effects of echinocandins against Candida spp.
MedLine Citation:
PMID:  22568712     Owner:  NLM     Status:  In-Data-Review    
Evaluation of: Shields RK, Nguyen MH, Press EG, Clancy CJ. Five-minute exposure to caspofungin results in prolonged postantifungal effects and eliminates the paradoxical growth of Candida albicans. Antimicrob. Agents Chemother. 55(7), 3598-3602 (2011). Echinocandins induce a postantifungal effect and a paradoxical effect. The postantifungal effect is a concentration-dependent process that allows for sustained kill of Candida spp. after relatively brief exposures to a compound. The paradoxical effect is growth that occurs at high echinocandin concentrations above the MIC. Paradoxical growth varies in terms of media, species, strain and type of echinocandin. The study by Shields et al. evaluated the impact of a brief exposure of caspofungin on paradoxical growth and postantifungal effects in Candida albicans isolates. In the postantifungal effect experiments, prolonged concentration-dependent killing occurred. Maximum postantifungal effects occurred with caspofungin exposures of 5 or 15 min. A brief exposure of caspofungin eliminated the paradoxical growth that was observed in the time-kill experiments. The report by Shields et al. illustrates that short exposures to an echinocandin may lead to prolonged postantifungal effects and furthers our understanding of the paradoxical effect in C. albicans.
Brad Moriyama; Stacey A Henning; Scott R Penzak; Thomas J Walsh
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Future microbiology     Volume:  7     ISSN:  1746-0921     ISO Abbreviation:  Future Microbiol     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-05-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101278120     Medline TA:  Future Microbiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  565-9     Citation Subset:  IM    
NIH Clinical Center, Pharmacy Department, Bethesda, MD, USA.
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