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Amoeba in Medical News

Scientists ID Enzyme That Allows Dysentery Amoeba to Hide

Finding could lead to more effective treatments for diarrhea worldwide, study says THURSDAY, June 19 (HealthDay News) U.S. researchers say they've identified an enzyme that may help dysentery-causing amoeba evade the immune system. The finding may help lead to new ways to fight d...

Tips from the journals of the American Society for Microbiology

...irus in ferrets reveals the potential for protective single-shot immunization. Journal of Virology , 83. 15: 7770-7778.) Infection-Causing amoeba May be Resistant to Multiple Contact Lens Solutions A new study suggests that some contact lens solutions do not properly disinfect against Acant...

Discovery in amber reveals ancient biology of termites

...his age-old example of mutualism, the new study revealed 10 new fossil flagellate species of protozoa, a new species of termite, a new genus of fossil amoeba and 14 additional trophic and encysted protist stages. Poinar for many years has studied life forms and other material found trapped in amber. As a...

Study shows how Salmonella survives in environment

...se a secretion system to protect themselves inside amoeba a single-celled organism living on land and in the water. The research suggests that amoeba may be a major source of Salmonella within the e...rates in the human immune system as well as inside amoeba living in the environment. This system essentiall...

How Montezuma gets his revenge

...g a new enzyme that may help the dysentery-causing amoeba evade the immune system. "This is the first en...oid enzymes. They found that the dysentery-causing amoeba Entamoeba histolytica contains one rhomboid enzyme...ified protein targets cut by EhROM1 by looking for amoeba proteins that had structural signatures similar to...

Researchers find new way to block destructive rush of immune cells

...for conditions made worse by misplaced inflammation, like atherosclerosis, stroke and transplant rejection, researchers said. Where a single-celled amoeba moves to find food, human cells migrate as part of complex bodily functions like immunity. Disease-fighting cells for instance move toward bacteria an...

Optometrists Support AMO's Voluntary Contact Lens Solution Recall

... remain vigilant to quickly diagnose and initiate treatment of this serious eye infection." According to the AOA, Acanthamoeba are microscopic amoeba commonly found in the environment, which rarely cause infections. When infection does occur, however, it can be extremely serious and can threaten a p...

Micro-world of Prehistoric Bacteria Found in Amber

...y of ancient micro-organisms. A key discovery was that many microbes appear to have changed very little in the last 200 million years. One amoeba found in the amber, Centropyxis hirsuta, is identical to a species that survives today. Amber is solidified tree sap, which can preserve small creatur...
Amoeba in Medical Dictionary

Amebiasis

... Amoebiasis, or Amebiasis refers to infection caused by the amoeba Entamoeba histolytica. The term Entamoebiasis is occasionally seen but is no longer in use; it refers to the same infection. Likewise amoebiasis is so...
Amoeba in Biological News

Single cell amoeba increases MRSA numbers 1000- fold

Scientists in the UK have found that a type of amoeba acts as an incubator for MRSA bacteria. As amoebae are often found in healthcare environments this discovery has implications for the infection control strategies adopted by hospitals. The single cell amoeba, Acanthamoeba polyphagam commonly e...

MRSA use amoeba to spread, new research shows

The MRSA 'superbug' evades many of the measures introduced to combat its spread by infecting a common single-celled organism found almost everywhere in hospital wards, according to new research published in the journal Environmental Microbiology. Scientists from the University of Bath have shown ...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

The genome sequence of the parasitic amoeba Entamoeba histolytica, a leading cause of severe diarrheal disease in developing countries, includes an unexpectedly complex repertoire of sensory genes as well as a variety of bacterial-like genes that contribute to the organism's unique biology. The ...

Stress signals link pre-existing sickness with susceptibility to bacterial infection

...t between simple organisms like Dictyostelium and humans allow scientists to use them to understand human disease. Dictyostelium is a free-living amoeba whose rapid movements make it useful to study motility and energy regulation, and in this case, the association between energy regulation and suscepti...

Diuscovery in amber reveals ancient biology of termites

...his age-old example of mutualism, the new study revealed 10 new fossil flagellate species of protozoa, a new species of termite, a new genus of fossil amoeba and 14 additional trophic and encysted protist stages. Poinar for many years has studied life forms and other material found trapped in amber. As a...

Texas-sized tract of single-celled clones

...example, one colony of aspen clones in Utah contains more than 40,000 trees that share a massive root system. In contrast, the short-lived patch of amoeba clones contained millions of genetically identical individuals of the species Dictyostelium discoideum . Though they typically live as loners, huntin...

Making the ultimate family sacrifice

...stick close to their kin before altruistically giving their all. The study, which appears this week in PLoS Biology , focuses on the soil-dwelling amoeba Dictyostelium discoideum . These single-celled creatures eat bacteria, and as long as food is plentiful, they're content to live alone. But when food...

Scientists find how amber becomes death trap for watery creatures

...t the evolution of microorganisms, he said. We all think of horses, elephants and people as having changed a great deal through time, he said. Have amoeba and other microscopic organisms changed much? Or have they found a niche or what we call a stasis in which their evolutionary lineage persists for man...

Caterpillars tell us how bacteria cause disease

...d to wreak havoc in humans. Dr Nick Waterfield, who is leading the study, explained: "Bacteria have been interacting with simple animals such as amoeba and insects for a staggering length of evolutionary time. It seems likely that most virulence genes around today probably first evolved to work agains...

Scientists' cell discovery unearths evolutionary clues

...sly, there was almost no molecular data for social amoeba ?Dictyostelia ?which are a hugely diverse and anci...the first time the family tree of all known social amoeba species and the evolution of their multicellular l...oeba. The existing family tree of the social amoeba was based on how the multicellular structures of e...
Amoeba in Biological Definition

Cell growth

... Dense populations of a giant sulfur bacterium in Namibian shelf sediments - Large protists of the genus Chaos , closely related to the genus amoeba Cell reproduction The process of cell reproduction has three major parts. The first part of cell reproduction involves the replication of the...

Osmoregulation

...les as in the pine. The sand-dune marran grass has rolled leaves with stomata on the inner surface. Osmoregulation in protoctists and animals amoeba makes us of a contractile vacuole to collect excretory waste, such as ammonia , from the intracellular fluid by both diffusion and active transport....

Protist

...protozoa are grouped into: Flagellates Move using flagella e.g. Euglena Amoeboids Move using pseudopodia e.g. amoeba Ciliates Move using cilia e.g. Paramecium Sporozoa Non-motile parasites that form spores e.g. Plasmodium ...

Protist

...protozoa are grouped into: Flagellates Move using flagella e.g. Euglena Amoeboids Move using pseudopodia e.g. amoeba Ciliates Move using cilia e.g. Paramecium Sporozoa Non-motile parasites that form spores e.g. Plasmodium ...

Pseudopod

...seudopods can be classified into several varieties according to their appearance: Lobopodia are bulbous, short and blunt in form, very typical of amoeba species. Filopodia are more slender and filiform with pointed ends, consisting mainly of ectoplasm . These formations are supported by microfil...
Amoeba in Biological Dictionary

Amoeba

Article from Wikipedia on this single-celled organism, its habitat, anatomy and reaction to outside stimuli such as changes in salinity. amoeba also ameba n. , pl. -bas also -bas , or -bae also -bae. ... To view a slide of an amoeba Tad sets a microscope to enlarge objects 100 times ... ...

Unicellular

.../ unicellular " ... Structure of an amoeba: unicellular animal with pseudopods that lives in fresh or saltwater. ... Pseudopodium: part of the amoeba used for locomotion. ... Welcome to the Guide, your online reference for unicellular biology. ... Chapter Seven: The Classification of Unicellu...

Rhizosphere

...ubject to the influence of plant roots and characterized by a zone of increased Rhizosphere (ecology) An illustration of the rhizosphere A= amoeba consuming bacteria BL=Energy limited bacteria BU=Non-energy limited bacteria Definition of rhizosphere from the Merriam-Webster Online Dictio...

Rhizopoda

...ida. Family. Arcellidae. Genus. Arcella. • Length: 50-60 mm ... ( Rhizopoda : Arcellinida). Arch. Protistenk., 134:161-167. Ogden, C. G. 1985. ... amoeba Microchlamys patella (Claparède & Lachmann, 1859) ( Rhizopoda : Arcellinida) ... ...

Protist

... Article from Wikipedia on the unicellular microbes that are traditionally ... to refer to a unicellular heterotrophic protist , such as an amoeba or a ciliate. ... We retain the word " protist " as a convenient term to mean "eukaryote that isn't ... We recommend the Protist Image Database ...

Pinocytosis

...pinocytosis mean? ... pinocytosis /pino·cy·to·sis/ (pi′′nah-si-to'sis) a mechanism by which cells ... entire Web this site. pinocytosis . An amoeba showing pinocytosis ... Pinocytosis ("cell drinking") is a form of endocytosis. Related category. • CELL BIOLOGY ... Why is receptor-mediated ...

Oscillatoria

... earth. ... Images of Nostoc and Oscillatoria provided by the University of Wisconsin ... Media. Paramaecium 400x. Stentor 100x. Closterium 100x. amoeba 100x. Oscillatoria . Rotifer ... Place slide under microscope and observe. Phacus. Paramaecium ... One-word search: Scientific Name. Common Name...

Cells

...cells . Colorful pictures and descriptions of cellular components. ... There are cells that are organisms onto themselves, such as microscopic amoeba ... Biology4Kids.com! The web site that teaches the basics of biology and life science to everyone! ... Cells are small compartments that ho...
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