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  • Susceptibility of clinical isolates of Candida spp. to terconazole and other azole antifungal agents.

Susceptibility of clinical isolates of Candida spp. to terconazole and other azole antifungal agents.

Diagnostic microbiology and infectious disease (1989-11-01)
M A Pfaller, T Gerarden
ABSTRACT

Terconazole is a triazole ketal derivative with potent, broad-spectrum antifungal activity. We investigated the in vitro activity of terconazole, miconazole, and clotrimazole, against 94 clinical isolates of Candida spp.: C. albicans (n = 68), C. tropicalis (n = 18), and C. parapsilosis (n = 8). In vitro susceptibility testing was performed using a broth microdilution method. The minimal inhibitory concentrations of terconazole were less than those of miconazole against C. albicans and C. parapsilosis but higher against C. tropicalis. Terconazole was more active than clotrimazole against C. parapsilosis and less active against C. albicans and C. tropicalis. Terconazole inhibited the uptake of 14C-labeled glucose, leucine, and hypoxanthine into C. albicans and caused the rapid release of intracellular K+. Based on these studies, terconazole has promising anticandidal activity and warrants further in vitro and in vivo investigation.

MATERIALS
Product Number
Brand
Product Description

USP
Terconazole, United States Pharmacopeia (USP) Reference Standard
Terconazole, European Pharmacopoeia (EP) Reference Standard
Supelco
Terconazole, VETRANAL®, analytical standard