The fungal pathogens Cryptococcus neoformans and Histoplasma capsulatum produce melanin-like pigments in the presence of L-dopa in vitro and during mammalian infection. We investigated whether melanization affected the susceptibilities of the fungi to amphotericin B, caspofungin, fluconazole, itraconazole, or flucytosine (5FC). Using the standard macrodilution MIC protocol (the M27A protocol) o...

Some effects of liposome-incorporated amphotericin B on the permeability of the human erythrocyte membrane to potassium and sodium ions is reported. The influence of cholesterol and amphotericin B in causing a shift towards smaller and larger liposomes, respectively, is also described. Phosphatidylcholine liposomes containing amphotericin B in a molar ratio of 7.4 +/- 0.1 (mean +/- SD) antibiot...

1. The effect of chronic and acute administration of amphotericin B on renal function, especially urinary acidification, was studied in rats. Chronic intraperitoneal administration of amphotericin B resulted in blood concentrations similar to or higher than those seen in patients treated with the antibiotic, but failed to produce hyperchloraemic acidosis. The minimum urine pH achieved during NH...

OBJECTIVES Coverage of antifungal drug particles (miconazole and amphotericin B) with cationic lipid and evaluation of a synergistic action between lipid and drug. METHODS Miconazole and amphotericin B were mixed with cationic bilayer fragments (BF) of dioctadecyldimethylammonium bromide (DODAB) at extreme drug to lipid molar proportions (P). Light scattering for particle sizing and zeta-pote...

Objectives: Liposomal amphotericin B is a broad-spectrum antifungal treatment used for life-threatening infections, but it commonly induces infusion-related adverse events that may prevent completion. Based on anecdotal evidence, slow infusion guideline at initiation has been suggested to reduce these reactions. This study aimed determine if slowing down the rate would of events.
 Methods:...

background and objectives : the incidence of fungal infections in immunocompromised patients, especially by candida species, has increased in recent years. this study was designed to identify candida species and determine antifungal susceptibility patterns of 595 yeast strains isolated from various clinical specimens. material and methods : identification of the isolates were determined by the ...

Antifungal combination therapy with voriconazole or amphotericin B and an echinocandin is often employed as primary or salvage therapy for management particularly of refractory aspergillosis. The pharmacodynamic interactions of amphotericin B- and voriconazole-based combinations with the three echinocandins caspofungin, micafungin, and anidulafungin in the presence of serum were tested against ...

Amphotericin B treatment was previously shown to inhibit Candida albicans reproduction and reduce the fluorescence of vitality-specific dyes without causing a corresponding increase in the fluorescence of the mortality-specific dyes bis-(1,3-dibutylbarbituric acid)trimethine oxonol and SYBR Green I. In the present study, we have confirmed these results and have shown that the numbers of CFU are...