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Anti-amebic effect of polyenic antibiotics] [Article in Russian]
Liubimova LK, Ovnanian KO, Ivanova LN.
Abstract All-Union Research technological Institute of Antibiotics and Medical Enzymes, Leningrad. Institute of Epidemiology, Virology and medical parasitology, Ministry of Health of the Armenian SSR. The effect of polyenic antibiotics made in the USSR on development of E. histolytica and E. moshkovski was studied. The following antibiotics were used: levorin and its derivatives, mycoheptin, amphotericin B, amphoglucamine and nystatin. The antibiotics were compared with emetine and metronidazole. Some drugs of the imidazole group were also included into the study. On the whole 15 drugs were tested for their antiamebic activity. All the polyenic antibiotics showed a high antiamebic activity. Levorin and its derivatives were the most active. Their MICs ranged from 0.1 to 5.38 micrograms/ml. The most active of the new imidazoles was 100 times less effective than sodium levorin. The studies show that the polyenic antibiotics have an antiamebic activity and a broad antiprotozoal spectrum
Laborat�rio de Doen�as Parasit�rias, Departamento de Medicina Tropical, Funda��o Oswaldo Cruz, Rio de Janeiro, RJ, Brasil. [email protected]
Abstract In regions with high prevalence, Blastocystis hominis is frequently found in association with Entamoeba histolytica/E. dispar in xenic cultures. Its exacerbated growth is often superimposed on the growth of amebas, thus impeding the continuation of the amebas in the culture, within a few generations. The present study reports on the excellent efficacy (100%) of the antifungal agent miconazole in eliminating B. hominis from cultures of E. histolytica/E. dispar, thereby maintaining the integrity of the trophozoites of the amebas. Nystatin presented low efficacy (33.3%).
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