Migration patterns of pathogenic and nonpathogenic Naegleria spp
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چکیده
منابع مشابه
Migration patterns of pathogenic and nonpathogenic Naegleria spp.
Four species of Naegleria were tested for their ability to migrate under agarose. Pathogenic N. fowleri strains exhibited rapid locomotion at 37 degrees C. Environmental isolates of N. fowleri moved faster than clinical isolates which had been kept in axenic culture for longer periods, and this result was confirmed by using the 84-2205-7 strain kept in axenic culture for 1 or 5 months. Nonpatho...
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An ameba of the genus Naegleria causing fatal meningoencephalitis in human subjects was investigated for its sensitivity to antifungal drugs: amphotericin B, ketoconazole, fluconazole and itraconazole. The efficacy of these antifungal drugs for pathogenic Naegleria spp was investigated in three strains isolated from patients who had died of primary amebic meningoencephalitis infection at Sirira...
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The cytopathology for rat neuroblastoma cells (B-103) and the pathogenicity for B6C3F1 mice of four species of Naegleria have been compared. Both live amoebae and cell-free extracts of N. australiensis, N. fowleri, N. gruberi, and N. lovaniensis added to 51Cr-labeled B-103 cells caused release of radiolabel. All four species of Naegleria exhibited surface extensions termed food cups. Only N. fo...
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The genus Naegleria consists of free-living amoebae widely distributed in soil and freshwater habitats throughout the world. These organisms characteristically undergo transformation from amoebae to flagellates. There are six species of Naegleria: N. fowtleri, N. aiustr(aliensis, N. lov,aniensis, N. griberi, N. jadini, and N. tliorntoni. Each species may be distinguished on the basis of cyst mo...
متن کاملElastase in the pathogenic free-living amoebae Naegleria and Acanthamoeba spp.
The data showed that pathogenic free-living amoebae contain the proteolytic enzyme elastase. The levels of enzyme were similar in Naegleria fowleri, N. australianis italica, and Acanthamoeba culbertsoni A-1. No difference was found between elastase levels in a highly pathogenic N. fowleri and those in the same organism which had lost pathogenicity as a result of long-term axenic maintenance.
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1986
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.51.1.177-180.1986