Gamma ray effects on trophozoites of Entamoeba histolytica.

Anti-parasitic Activity of Some Medicinal Plants Essential Oils on Giardia lamblia and Entamoeba histolytica, In Vitro

Background and objectives: Giardiasis and amoebiasis are two common diseases in human societies which make increasing problems for the health managing systems. In the present study, the antiparasitic activity of Allium sativum, Artemisia sieberi, Zatraria multiflora, Chenopodium botrys and Eucalyptus globulus essential oils on Gi...

Phenolic Acid Composition and Anti-Parasitic Effects of Four Peucedanum Species on Entamoeba histolytica Trophozoites

BACKGROUND The aim of this study was to determine phenolic acid composition and anti-parasitic effects of Peucedanum caucasicum, P. palimbioides, P. longibracteolatum and P. chryseum on Entamoeba histolytica. METHODS Methanol extracts of the plant species were prepared by soxhlet extraction. Phenolic acid compositions were determined by HPLC. Anti-proliferative effect of extracts on trophozoi...

Cytokine activation of murine macrophages for in vitro killing of Entamoeba histolytica trophozoites.

Macrophage-mediated effector mechanisms against the protozoan parasite Entamoeba histolytica were studied. Unstimulated macrophages were inefficient at killing E. histolytica trophozoites in vitro and were killed by the trophozoites. Conversely, immature cells of the mononuclear phagocyte lineage (promonocytes) were shown to display a strong spontaneous amebicidal activity. The acquisition of m...

Entamoeba histolytica meningoencephalitis diagnosed by trophozoites in cerebrospinal fluid

Entamoeba histolytica meningoencephalitis has not been described in the modern literature, which is distinct from that caused by free-living amoebae. We report the first case of E. histolytica meningoencephalitis without liver or brain abscesses. Cerebrospinal fluid revealed 2 + very motile trophozoites. Our patient was successfully treated with intravenous metronidazole.

Lipid microdomains are involved in adhesion of Entamoeba histolytica trophozoites to host extracellular matrix components