Reduced accumulation of drug in Candida krusei accounts for itraconazole resistance.

作者: K Venkateswarlu , D W Denning , N J Manning , S L Kelly

DOI: 10.1128/AAC.40.11.2443

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摘要: Due to intrinsic resistance Candida krusei is emerging as a systemic pathogen in AIDS patients undergoing fluconazole therapy, but acquired itraconazole has not been studied biochemically. We report here studies on the basis for azole and sterol composition C. krusei. An itraconazole-resistant isolate showed reduced susceptibility drugs vitro growth inhibition studies. Accumulation of 14 alpha-methyl-3,6-diol under treatment was associated with arrest. In ergosterol biosynthesis type II binding suggested no alteration affinity target enzyme, cytochrome P-450 alpha-demethylase, resistant isolate. Resistance decreased intracellular content drug

参考文章(34)
H. Moereels, H. Vanden Bossche, P. Marichal, Molecular mechanisms of antifungal activity and fungal resistence: focus on inhibitors of ergosterol biosynthesis Molecular Biology and its Application to Medical Mycology. pp. 179- 197 ,(1993) , 10.1007/978-3-642-84625-0_20
Hugo Vanden Bossche, Biochemical Targets for Antifungal Azole Derivatives: Hypothesis on the Mode of Action Current topics in medical mycology. ,vol. 1, pp. 313- 351 ,(1985) , 10.1007/978-1-4613-9547-8_12
ANTHONY W. NORMAN, ANNA M. SPIELVOGEL, RICHARD G. WONG, Polyene antibiotic - sterol interaction. Advances in lipid research. ,vol. 14, pp. 127- 170 ,(1976) , 10.1016/B978-0-12-024914-5.50010-3
K Venkateswarlu, D W Denning, N J Manning, S L Kelly, Comparison of D0870, a new triazole antifungal agent, to fluconazole for inhibition of Candida albicans cytochrome P-450 by using in vitro assays. Antimicrobial Agents and Chemotherapy. ,vol. 40, pp. 1382- 1386 ,(1996) , 10.1128/AAC.40.6.1382
Tsuneo Omura, Ryo Sato, The Carbon Monoxide-binding Pigment of Liver Microsomes Journal of Biological Chemistry. ,vol. 239, pp. 2370- 2378 ,(1964) , 10.1016/S0021-9258(20)82244-3
R.S.Thomas Loeffler, Ann L. Hayes, Sterols of the plant pathogenic fungi Botrytis cinerea and Pyrenophora teres Phytochemistry. ,vol. 29, pp. 3423- 3425 ,(1990) , 10.1016/0031-9422(90)85250-J
S.L. Kelly, D.C. Lamb, A.J. Corran, B.C. Baldwin, D.E. Kelly, Mode of Action and Resistance to Azole Antifungals Associated with the Formation of 14α-Methylergosta-8,24(28)-dien-3β,6α-diol Biochemical and Biophysical Research Communications. ,vol. 207, pp. 910- 915 ,(1995) , 10.1006/BBRC.1995.1272
Mary E. Fling, Jan Kopf, Aviva Tamarkin, Jessica A. Gorman, Herbert A. Smith, Yigal Koltin, Analysis of a Candida albicans gene that encodes a novel mechanism for resistance to benomyl and methotrexate. Molecular Genetics and Genomics. ,vol. 227, pp. 318- 329 ,(1991) , 10.1007/BF00259685
Berrand Dupont, Invasive Fungal Infections Caused By Yeasts as Emerging Pathogens Infectious Diseases in Clinical Practice. ,vol. 3, ,(1994) , 10.1097/00019048-199403001-00007
Maarten A. De Waard, Johannes G. M. Van Nistelrooy, Accumulation of SBI fungicides in wild-type and fenarimol-resistant isolates of Penicillium italicum Pesticide Science. ,vol. 22, pp. 371- 382 ,(1988) , 10.1002/PS.2780220409