Results 131 to 140 of about 4,535 (174)

Ecology of Free-Living Amoebae

Critical Reviews in Microbiology, 1994
Small free-living amoebae (FLA) are the main predators controlling bacterial populations in soils. They are distributed in the rhizospheric zone and the surrounding bulk soil; however, they may spread deeper, reaching the vadose zone of groundwater systems, especially where bacterial populations get to high densities.
openaire   +2 more sources

Chemotaxis in large, free-living amoebae

Experimental Cell Research, 1965
Abstract Free-living large amoebae have been shown to exhibit directed chemotactic movement towards hydra tissue and a water-soluble fraction extracted from commercial crude papain. The chemotactic responses are produced by the local formation of pseudopods and their subsequent extension.
K W, JEON, L G, BELL
openaire   +2 more sources

Bacterial endosymbionts of free-living amoebae.

The Journal of eukaryotic microbiology, 2004
The occurrence of bacterial endosymbionts in free-living amoebae has been known for decades, but their obligate intracellular lifestyle hampered their identification. Application of the full cycle rRNA approach, including 16S rRNA gene sequencing and fluorescence in-situ hybridization with 16S rRNA-targeted oligonucleotide probes, assigned the ...
Horn, Matthias, Wagner, Michael
openaire   +2 more sources

Epidemiology of Pathogenic Free-living Amoeba

International Journal of TROPICAL DISEASE & Health, 2022
Free-living amoeba (FLA) is a free living parasitic organism which have the capability to infect human and attack various vital organs e.q., the central nervous system, eyes, skin, nose, lungs and kidneys; depending on which organ is reached. When it comes to the central nervous system, this disease is very fatal and potentially lethal because the ...
Lilly Haslinda, Esy Maryanti
openaire   +1 more source

Free‐living amoebae: pathogenicity and immunity

Parasite Immunology, 1991
Summary Free‐living amoebae cause three well‐defined disease entities: (i) primary amoebic meningoencephalitis. caused by Naegleria fowleri, (ii) granulomatous amoebic encephalitis and (iii) chronic amoebic keratitis, caused by species of Acanthamoeba.
openaire   +2 more sources

Vermamoeba vermiformis: a Free-Living Amoeba of Interest

Microbial Ecology, 2018
Free-living amoebae are protists that are widely distributed in the environment including water, soil, and air. Although the amoebae of the genus Acanthamoeba are still the most studied, other species, such as Vermamoeba vermiformis (formerly Hartmannella vermiformis), are the subject of increased interest.
Vincent Delafont, Marie-Helene Rodier, Elodie Maisonneuve, Estelle Cateau   +3 more
openaire   +2 more sources

Nasal Carriage of Free-Living Amoebae [PDF]

Microbial Ecology in Health and Disease, 1988
South Australia has had a relatively high frequency of human disease caused by free-living amoebae. The prevalence of these organisms in the nasal mucosa of 262 asymptomatic adult volunteers was determined. Acanthamoeba was isolated from six (2.3 per cent) subjects. This carriage rate is not high in comparison to other studies. Keywords: Free-living
P. R. Badenoch, T. R. Grimmond, J. Cadwgan, S. E. Deayton, M. S. L. Essery, B. D. Hill   +5 more
exaly   +3 more sources

Polyamines biosynthesis and oxidation in free-living amoebae

Amino Acids, 2004
In this paper we describe the polyamine biosynthesis and oxidation processes, giving an overview about recent results in free-living Amoebae. The protozoa polyamine levels are different in comparison with mammalian cells. Also, the polyamine levels in protozoa cells change if these species are pathological or not for the human beings.
RUGGERI, Pietro Antonio, LAGANA', Giuseppina, BELLOCCO, Ersilia Santa, FABIANO, Caterina, LEONALDI, Rosaria, FORINO, Domenico   +5 more
openaire   +2 more sources

Viruses in close associations with free-living amoebae

Parasitology Research, 2015
As both groups of organisms, free-living amoebae (FLA) and viruses, can be found in aquatic environments side by side, it appears obvious that there are multiple interactions with respect to host-endocytobiont relationships. Several relationships between viruses and protozoan hosts are described and it was the discovery of the so called "giant viruses,"
openaire   +2 more sources

OBSERVATIONS ON THE CULTURE AND MAINTENANCE OF A FREE-LIVING AMOEBA

Canadian Journal of Microbiology, 1956
A free-living amoeba isolated from creek water could be grown at 24 °C. on a solid malt agar medium together with a pure culture of a motile Gram-negative bacillus, isolated from the same sample of water. The bacilli apparently served as the sole source of food for the trophozoites, the malt in the medium being-utilized by the bacilli for their own ...
openaire   +2 more sources