Pathogenic Free-living Amoeba
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چکیده
These are Acanthamoeba spp., Balamuthia mandrillaris (the only known species of Balamuthia), Naegleria fowleri (sometimes considered not to be an amoeba at all, but more closely related to Leishmania and Trypanosoma) and Sappinia pedata. They are distinct from the more famous Entamoeba histolytica (an obligate anaerobic parasite which can cause amoebiasis, amoebic dysentery and amoebic liver abscesses).
منابع مشابه
Detection of Potentially Pathogenic Free-living Amoeba, from the Internal Environment of Educational Hospitals in Rasht
Introduction: Acanthamoeba, also called amphizoic amoebae, could live in various environmental sources including water, soil, dust and also human and animal tissues. This amoeba could develop diseases such as keratitis and encephalitis in high-risk individuals. Objective: The present study was conducted considering the possible contamination of hospital wards with Acanthamoba and the lack of...
متن کاملThe role of free-living pathogenic amoeba in the transmission of leprosy: a proof of principle.
OBJECTIVES Leprosy transmission remains poorly understood, though, prolonged skin contact and/or infection via nasal mucosa, are considered likely. Problematic in any transmission hypothesis is the fastidious nature of Mycobacterium leprae outside its host cell and the requirement for temporary survival in the environment, soil or water. Experiments were carried out to test the hypothesis that ...
متن کاملIn vitro and in vivo tumoricidal properties of a pathogenic/free-living amoeba.
The chemotactic and tumoricidal properties of the pathogenic/free-living amoeba Acanthamoeba castellanii were examined in vivo and in vitro. A. castellanii trophozoites displayed strong positive chemotactic responses to human melanoma (OCM-1) and murine melanoma (D5.1G4) cells. Although the parasites typically invade and destroy the corneal epithelium and stroma, positive chemotactic responses ...
متن کاملPathogenic Free-Living Amoebae Isolated From Contact Lenses of Keratitis Patients
BACKGROUND Free-living amoeba (FLA)-related keratitis is a progressive infection of the cornea with poor prognosis. The present study aimed to investigates the contact lenses of patients with keratitis for pathogenic free-living amoebae. METHODS Overall, 62 contact lenses and their paraphernalia of patients with keratitis cultured and tested for the presence of free-living amoebae using morph...
متن کاملPresence of potential pathogenic genotypes of free-living amoebae isolated from sandboxes in children's playgrounds.
Some free-living amoebae are a potential threat to human health. The best known species are those of the genus Acanthamoeba Volkonsky, 1931, which cause Acanthamoeba keratitis, granulomatous amoebic encephalitis and other forms of tissue inflammation. The aim of the present study was to search for potential pathogenic genotypes of free-living amoeba in the sand in children’s playgrounds. Our re...
متن کاملFree Living Amoeba Belonging to Vannella Spp. Isolated from a Hotspring in Amol City, Northern Iran
Background: Free-living amoebae have various genera that are found in several environmental niches such as soil, freshwater, dust, seawater and hotsprings. Most of Free-living amoebae are normally harmless to humans. However, some ameoba such as Acanthamoeba and also Naegleria fowleri, Balamuthia manderillaris and Sappinia are identified as opportunistic and pathogenic amoebae that can cause ey...
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تاریخ انتشار 2017