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1994-10-01
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Document 0095
DOCN M94A0095
TI In vitro susceptibility and sterol biosynthesis of Candida albicans
strains after long-term treatment with azoles in HIV-infected patients.
DT 9412
AU Hundt W; Hofmann H; Dermatologische Klinik und Poliklinik, Technischen
Universitat,; Munchen, Germany.
SO Infection. 1994 Mar-Apr;22(2):124-31. Unique Identifier : AIDSLINE
MED/94350501
AB Over a period of 6 to 24 months a long term follow up of the in vitro
antifungal susceptibility of 306 Candida albicans strains from 49
HIV-infected patients was performed. Using a microdilution test, the
strains were tested against the azoles ketoconazole, itraconazole and
fluconazole. The susceptibility range for fluconazole was between 1 and
128 mg/l, for itraconazole between 0.015 and 32 mg/l and for
ketoconazole between 0.007 and 16 mg/l. 11.7% of the strains showed
elevated IC30-values against ketoconazole, 9.1% against itraconazole and
10.1% against fluconazole. Sterol biosynthesis was examined by thin
layer chromatography in 18 less sensitive strains and nine sensitive
strains in the presence of ketoconazole. The proportion of ergosterol in
the presence of ketoconazole at a concentration of 0.003 mg/l varied
between 7.6% and 21.1% in sensitive strains and between 11.1% and 86.6%
in less sensitive strains. In resistant control strains the proportion
of ergosterol was 73% and 94.2%, respectively. Without ketoconazole the
ergosterol proportion was > 85% in all strains. There was a significant
correlation between the IC30-values and the inhibition of ergosterol
biosynthesis (p = 0.05).
DE AIDS-Related Opportunistic Infections/DRUG THERAPY/*MICROBIOLOGY
Candida albicans/*DRUG EFFECTS/GROWTH & DEVELOPMENT Candidiasis,
Oral/DRUG THERAPY/*MICROBIOLOGY Chromatography, Thin Layer Drug
Resistance, Microbial Evaluation Studies
Fluconazole/PHARMACOLOGY/*THERAPEUTIC USE Follow-Up Studies Human
Itraconazole/PHARMACOLOGY/*THERAPEUTIC USE
Ketoconazole/PHARMACOLOGY/*THERAPEUTIC USE Microbial Sensitivity Tests
Sterols/*BIOSYNTHESIS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).