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Miconazole and amphotericin B alter polymorphonuclear leukocyte functions and membrane fluidity in similar fashions. 1988

K Yasui, and M Masuda, and T Matsuoka, and M Yamazaki, and A Komiyama, and T Akabane, and K Murata
Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan.

The influence of miconazole on polymorphonuclear leukocytes (PMN) was investigated and compared with that of amphotericin B (AmB). Human PMN were preincubated in vitro with miconazole or AmB at therapeutically attainable concentrations in plasma, and their chemotactic functions were assessed with the synthetic chemotactic peptide N-formylmethionyl-leucyl-phenylalanine (FMLP). Changes in membrane fluidity of PMN were examined by an excimer-forming lipid technique. Adherence of PMN was measured by a nylon fiber column method. Miconazole and AmB pretreatment irreversibly depressed PMN random migration and chemotaxis under agarose but did not influence superoxide anion production. Both miconazole and AmB increased PMN adherence. Miconazole and AmB lowered the binding affinity of FMLP receptors on PMN and decreased the membrane fluidity in a similar manner. These results demonstrate that miconazole and AmB alter selected in vitro membrane properties of human PMN.

UI MeSH Term Description Entries
D008560 Membrane Fluidity The motion of phospholipid molecules within the lipid bilayer, dependent on the classes of phospholipids present, their fatty acid composition and degree of unsaturation of the acyl chains, the cholesterol concentration, and temperature. Bilayer Fluidity,Bilayer Fluidities,Fluidities, Bilayer,Fluidities, Membrane,Fluidity, Bilayer,Fluidity, Membrane,Membrane Fluidities
D008825 Miconazole An imidazole antifungal agent that is used topically and by intravenous infusion. Brentan,Dactarin,Miconasil Nitrate,Miconazole Nitrate,Monistat,R-14,889,Nitrate, Miconasil,Nitrate, Miconazole,R 14,889,R14,889
D009504 Neutrophils Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes. LE Cells,Leukocytes, Polymorphonuclear,Polymorphonuclear Leukocytes,Polymorphonuclear Neutrophils,Neutrophil Band Cells,Band Cell, Neutrophil,Cell, LE,LE Cell,Leukocyte, Polymorphonuclear,Neutrophil,Neutrophil Band Cell,Neutrophil, Polymorphonuclear,Polymorphonuclear Leukocyte,Polymorphonuclear Neutrophil
D002633 Chemotaxis The movement of cells or organisms toward or away from a substance in response to its concentration gradient. Haptotaxis
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000666 Amphotericin B Macrolide antifungal antibiotic produced by Streptomyces nodosus obtained from soil of the Orinoco river region of Venezuela. Amphocil,Amphotericin,Amphotericin B Cholesterol Dispersion,Amphotericin B Colloidal Dispersion,Fungizone

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