Journal
JOURNAL OF EUKARYOTIC MICROBIOLOGY
Volume 60, Issue 5, Pages 539-543Publisher
WILEY
DOI: 10.1111/jeu.12062
Keywords
Cyst; diminazene aceturate; drug assays; in vitro culture; trophozoite
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Funding
- Ministry of Higher Education Malaysia
- University of Malaya, Malaysia
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The free-living amoeba Balamuthia mandrillaris causes usually fatal encephalitis in humans and animals. Only limited studies have investigated the efficacy of antimicrobial agents against the organism. Assay methods were developed to assess antimicrobial efficacy against both the trophozoite and cyst stage of B. mandrillaris (ATCC 50209). Amphotericin B, ciclopirox olamine, miltefosine, natamycin, paromomycin, pentamidine isethionate, protriptyline, spiramycin, sulconazole and telithromycin had limited activity with amoebacidal levels of >135-500M. However, diminazene aceturate (Berenil((R))) was amoebacidal at 7.8M and 31.3-61.5M for trophozoites and cysts, respectively. Assays for antimicrobial testing may improve the prognosis for infection and aid in the development of primary selective culture isolation media.
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