Amebicidal activity of plant extracts from Southeast Asia on Acanthamoeba spp

    Authors

    D. M. Chu; H. Miles; D. Toney; C. Ngyuen;F. Marciano-Cabral

    Comments

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    Abbreviated Journal Title

    Parasitol. Res.

    Keywords

    ACQUIRED-IMMUNODEFICIENCY-SYNDROME; NAEGLERIA-FOWLERI AMEBAS; COMPLEMENT; RESISTANCE; INFECTION; MENINGOENCEPHALITIS; KERATITIS; ANTIBIOTICS; PRINCIPLES; MEDICINES; POLYPHAGA; Parasitology

    Abstract

    The effect of 100 polar and 100 nonpolar plant extract materials obtained from Southeast Asia were evaluated for amebicidal activity in vitro against three species of Acanthamoeba. A. culbertsoni, A. castellanii, and A. polyphaga, the causative agents of granulomatous amebic encephalitis and amebic keratitis, were studied in vitro to determine whether the plant extracts exhibited amebicidal activity or induced encystment of the amebae. Of the 200 plant extracts tested, extracts obtained from three plants (Ipomoea sp., Kaempferia galanga, and Cananga odorata) were amebicidal for all three species of Acanthamoeba and a fourth extract prepared from Gastrochilus panduratum was lytic for A. polyphaga and growth-inhibitory for A. castellanii and A. culbertsoni. Three plant extracts induced encystment of all three species of Acanthamoeba. Select plant extracts were tested as well for tumoricidal activity against B103 neuroblastoma cells. Some plant extracts that exhibited tumoricidal activity for B103 cells were not amebicidal for Acanthamoeba spp. Additionally, the polar and nonpolar extracts that exhibited amebicidal activity were also tested for activity against primary murine peritoneal macrophage cultures. Plant extracts that demonstrated tumoricidal or amebicidal activity were not lytic for normal macrophage cultures.

    Journal Title

    Parasitology Research

    Volume

    84

    Issue/Number

    9

    Publication Date

    1-1-1998

    Document Type

    Article

    Language

    English

    First Page

    746

    Last Page

    752

    WOS Identifier

    WOS:000075878300010

    ISSN

    0044-3255

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