Expert Opin Pharmacother. 2008 Apr;9(6):927-35.

Fungicidal versus Fungistatic: what's in a word?

Lewis JS 2nd, Graybill JR. University Health System, Department of Pharmacy, 4502 Medical Drive, San Antonio, TX 78229, USA. This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

BACKGROUND: Historically clinicians have preferred to use 'cidal' antifungal agents, particularly in critically ill patients. However, data to support the belief that the preferential use of a 'cidal' agent results in better patient outcomes has been lacking.

OBJECTIVE: This review examined the in vitro definitions of fungicidal and fungistatic as well as their strengths and limitations.

METHODS: A Medline search was performed in order to identify literature that examined the in vitro or in vivo impact of fungicidal and fungistatic activity. The study examined three common invasive fungal infections, namely cryptococcal meningitis, candidemia and invasive aspergillosis, where sufficient comparisons of fungicidal and fungistatic agents have been performed to allow for the evaluation of the clinical importance of these in vitro findings.

RESULTS AND CONCLUSION: A clear clinical benefit of fungicidal agents over those with fungistatic activity remains elusive. Patients with cryptococcal meningitis clearly benefit from early fungicidal therapy but require long-term suppression. The data in invasive Candida sp. infections are tantalizing and suggest that fungicidal therapy may be important. However, the data for invasive aspergillosis do not support the hypothesis that fungicidal activity improves outcomes.

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