Amoeba: A genus of ameboid protozoa. Characteristics include a vesicular nucleus and the formation of several lodopodia, one of which is dominant at a given time. Reproduction occurs asexually by binary fission.Amebiasis: Infection with any of various amebae. It is an asymptomatic carrier state in most individuals, but diseases ranging from chronic, mild diarrhea to fulminant dysentery may occur.Acanthamoeba: A genus of free-living soil amoebae that produces no flagellate stage. Its organisms are pathogens for several infections in humans and have been found in the eye, bone, brain, and respiratory tract.Naegleria: A free-living soil amoeba pathogenic to humans and animals. It occurs also in water and sewage. The most commonly found species in man is NAEGLERIA FOWLERI which is the pathogen for primary amebic meningoencephalitis in primates.Acanthamoeba castellanii: A species of free-living soil amoebae in the family Acanthamoebidae. It can cause ENCEPHALITIS and KERATITIS in humans.Dictyostelium: A genus of protozoa, formerly also considered a fungus. Its natural habitat is decaying forest leaves, where it feeds on bacteria. D. discoideum is the best-known species and is widely used in biomedical research.Naegleria fowleri: A species of parasitic protozoa having both an ameboid and flagellate stage in its life cycle. Infection with this pathogen produces PRIMARY AMEBIC MENINGOENCEPHALITIS.Amoebida: An order of ameboid protozoa that is commonly uninucleate and possess mitochondria. Most organisms are nonpathogenic.Hartmannella: A genus of free-living amoebae found in fresh water. The cysts usually pass harmlessly through the intestinal tract of man and may thus be found in feces. Occasionally, these organisms cause respiratory tract infections or generalized fatal meningoencephalitis.Entamoeba histolytica: A species of parasitic protozoa causing ENTAMOEBIASIS and amebic dysentery (DYSENTERY, AMEBIC). Characteristics include a single nucleus containing a small central karyosome and peripheral chromatin that is finely and regularly beaded.Lobosea: A class of amoeboid EUKARYOTES that forms either filiform subpseudopodia or lobopodia. Characteristics include the absence of sorocarps, sporangia, or similar fruiting bodies. Lobosea were formerly members of the phylum Sarcomastigophora, subphylum Sarcodina, under the old five kingdom paradigm.Spores, Protozoan: A vegetative stage in the life cycle of sporozoan protozoa. It is characteristic of members of the phyla APICOMPLEXA and MICROSPORIDIA.Central Nervous System Protozoal Infections: Infections of the brain, spinal cord, or meninges by single celled organisms of the former subkingdom known as protozoa. The central nervous system may be the primary or secondary site of protozoal infection. These diseases may occur as OPPORTUNISTIC INFECTIONS or arise in immunocompetent hosts.Amebicides: Agents which are destructive to amebae, especially the parasitic species causing AMEBIASIS in man and animal.Legionella pneumophila: A species of gram-negative, aerobic bacteria that is the causative agent of LEGIONNAIRES' DISEASE. It has been isolated from numerous environmental sites as well as from human lung tissue, respiratory secretions, and blood.Chlamydiales: An order of obligately intracellular, gram-negative bacteria that have the chlamydia-like developmental cycle of replication. This is a two-stage cycle that includes a metabolically inactive infectious form, and a vegetative form that replicates by binary fission. Members of Chlamydiales are disseminated by aerosol or by contact. There are at least six recognized families: CHLAMYDIACEAE, Criblamydiaceae, Parachlamydiaceae, Rhabdochlamydia, Simkaniaceae, and Waddliaceae.Myxomycetes: A division of organisms that exist vegetatively as complex mobile plasmodia, reproduce by means of spores, and have complex life cycles. They are now classed as protozoa but formerly were considered fungi.Trophozoites: Cells or feeding stage in the life cycle of sporozoan protozoa. In the malarial parasite, the trophozoite develops from the MEROZOITE and then splits into the SCHIZONT. Trophozoites that are left over from cell division can go on to form gametocytes.Amoebozoa: A supergroup (some say phylum) of ameboid EUKARYOTES, comprising ARCHAMOEBAE; LOBOSEA; and MYCETOZOA.Dictyosteliida: An order of protozoa characterized by their ability to aggregate to form a multicellular pseudoplasmodium, which gives rise to a multispored fruiting body. A stalk tube is present.Entamoeba: A genus of ameboid protozoa characterized by the presence of beaded chromatin on the inner surface of the nuclear membrane. Its organisms are parasitic in invertebrates and vertebrates, including humans.Entamoebiasis: Infection with amoebae of the genus ENTAMOEBA. Infection with E. histolytica causes DYSENTERY, AMEBIC and LIVER ABSCESS, AMEBIC.Meningoencephalitis: An inflammatory process involving the brain (ENCEPHALITIS) and meninges (MENINGITIS), most often produced by pathogenic organisms which invade the central nervous system, and occasionally by toxins, autoimmune disorders, and other conditions.Protozoan Proteins: Proteins found in any species of protozoan.Acanthamoeba Keratitis: Infection of the cornea by an ameboid protozoan which may cause corneal ulceration leading to blindness.Mimiviridae: A family of nucleocytoplasmic, large, double-stranded DNA viruses with extremely complex genomes.Legionella: Gram-negative aerobic rods, isolated from surface water or thermally polluted lakes or streams. Member are pathogenic for man. Legionella pneumophila is the causative agent for LEGIONNAIRES' DISEASE.Liver Abscess, Amebic: Single or multiple areas of PUS due to infection by any ameboid protozoa (AMEBIASIS). A common form is caused by the ingestion of ENTAMOEBA HISTOLYTICA.Dimethyldithiocarbamate: A chemical that acts as a dopamine beta-hydroxylase inhibitor. Its salts are agricultural fungicides. It is inferior to diethyldithiocarbamate as a chelating agent.Genes, Protozoan: The functional hereditary units of protozoa.Eukaryota: One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.Dysentery, Amebic: DYSENTERY caused by intestinal amebic infection, chiefly with ENTAMOEBA HISTOLYTICA. This condition may be associated with amebic infection of the LIVER and other distant sites.Chemotaxis: The movement of cells or organisms toward or away from a substance in response to its concentration gradient.Physarum: A genus of protozoa, formerly also considered a fungus. Characteristics include the presence of violet to brown spores.DNA, Protozoan: Deoxyribonucleic acid that makes up the genetic material of protozoa.Physarum polycephalum: A protozoan, previously also considered a fungus. Characteristics include sporangia that are stalked and multilobed. It is widely used in biomedical research.Pinocytosis: The engulfing of liquids by cells by a process of invagination and closure of the cell membrane to form fluid-filled vacuoles.Microscopy, Electron: Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen.Cytoplasmic Streaming: The movement of CYTOPLASM within a CELL. It serves as an internal transport system for moving essential substances throughout the cell, and in single-celled organisms, such as the AMOEBA, it is responsible for the movement (CELL MOVEMENT) of the entire cell.VirginiaIndians, North American: Individual members of North American ethnic groups with ancient historic ancestral origins in Asia.West VirginiaChristianity: The religion stemming from the life, teachings, and death of Jesus Christ: the religion that believes in God as the Father Almighty who works redemptively through the Holy Spirit for men's salvation and that affirms Jesus Christ as Lord and Savior who proclaimed to man the gospel of salvation. (From Webster, 3d ed)Disasters: Calamities producing great damage, loss of life, and distress. They include results of natural phenomena and man-made phenomena. Normal conditions of existence are disrupted and the level of impact exceeds the capacity of the hazard-affected community.Meningitis: Inflammation of the coverings of the brain and/or spinal cord, which consist of the PIA MATER; ARACHNOID; and DURA MATER. Infections (viral, bacterial, and fungal) are the most common causes of this condition, but subarachnoid hemorrhage (HEMORRHAGES, SUBARACHNOID), chemical irritation (chemical MENINGITIS), granulomatous conditions, neoplastic conditions (CARCINOMATOUS MENINGITIS), and other inflammatory conditions may produce this syndrome. (From Joynt, Clinical Neurology, 1994, Ch24, p6)Meningitis, Bacterial: Bacterial infections of the leptomeninges and subarachnoid space, frequently involving the cerebral cortex, cranial nerves, cerebral blood vessels, spinal cord, and nerve roots.WalesOnions: Herbaceous biennial plants and their edible bulbs, belonging to the Liliaceae.South CarolinaIndianaWater: A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Headache: The symptom of PAIN in the cranial region. It may be an isolated benign occurrence or manifestation of a wide variety of HEADACHE DISORDERS.Pancreatic Neoplasms: Tumors or cancer of the PANCREAS. Depending on the types of ISLET CELLS present in the tumors, various hormones can be secreted: GLUCAGON from PANCREATIC ALPHA CELLS; INSULIN from PANCREATIC BETA CELLS; and SOMATOSTATIN from the SOMATOSTATIN-SECRETING CELLS. Most are malignant except the insulin-producing tumors (INSULINOMA).North Carolina

In vivo expression of the nucleolar group I intron-encoded I-dirI homing endonuclease involves the removal of a spliceosomal intron. (1/489)

The Didymium iridis DiSSU1 intron is located in the nuclear SSU rDNA and has an unusual twin-ribozyme organization. One of the ribozymes (DiGIR2) catalyses intron excision and exon ligation. The other ribozyme (DiGIR1), which along with the endonuclease-encoding I-DirI open reading frame (ORF) is inserted in DiGIR2, carries out hydrolysis at internal processing sites (IPS1 and IPS2) located at its 3' end. Examination of the in vivo expression of DiSSU1 shows that after excision, DiSSU1 is matured further into the I-DirI mRNA by internal DiGIR1-catalysed cleavage upstream of the ORF 5' end, as well as truncation and polyadenylation downstream of the ORF 3' end. A spliceosomal intron, the first to be reported within a group I intron and the rDNA, is removed before the I-DirI mRNA associates with the polysomes. Taken together, our results imply that DiSSU1 uses a unique combination of intron-supplied ribozyme activity and adaptation to the general RNA polymerase II pathway of mRNA expression to allow a protein to be produced from the RNA polymerase I-transcribed rDNA.  (+info)

Polymerization of Acanthamoeba actin. Kinetics, thermodynamics, and co-polymerization with muscle actin. (2/489)

The kinetics and thermodynamics for the polymerization of purified Acanthamoeba actin were studied and compared to muscle actin. Polymerization was qualitatively similar for the two actins with a rate-limiting nucleation step followed by rapid polymer extension. Polymerization occurred only above a threshold critical concentration which varied with polymerization conditions for each actin. In the presence of 2 mM MgCl2, nucleation of both actins was rapid and their critical concentrations were similarly low and not detectably dependent on temperature. In 0.1 M KCl, the rates of nucleation of both actins were much slower than when Mg2+ was present and were significantly different from each other. Also, under these conditions, the critical concentrations of Acanthamoeba and muscle actin were significantly different and both varied markedly with temperature. These quantitative differences between the two actins could be attributed to differences in both their enthalpies and entropies of polymerization, Acanthamoeba actin having the more positive deltaH and delta S. Co-polymerization of the two actins was also demonstrated. Overall, however, there were no qualitative differences between Acanthamoeba and muscle actin that would suggest a unique role for the monomer-polymer equilibrium of cytoplasmic actin in cell motility.  (+info)

Timing of nucleolar DNA replication in Amoeba proteus. (3/489)

Light- and electron-microscope autoradiography have been used to follow the incorporation of [3H]thymidine at different stages during the interphase of synchronously growing populations of Amoeba proteus. Two main patterns were found for tritiated thymidine incorporation, i.e. DNA synthesis. The major incorporation was in the central region of the nucleus, but a lesser degree of incorporation occurred in the nucleolar region. The bulk of this nucleolar DNA was found to be late replicating, i.e. it replicated during the G2 phase.  (+info)

Serum antibodies to Balamuthia mandrillaris, a free-living amoeba recently demonstrated to cause granulomatous amoebic encephalitis. (4/489)

Free-living amoebae cause three well-defined disease entities: a rapidly fatal primary meningoencephalitis, a chronic granulomatous amoebic encephalitis (GAE), and a chronic amoebic keratitis. GAE occurs in immunocompromised persons. Recently, another type of free-living amoeba, Balamuthia mandrillaris, has been shown to cause GAE. The finding that this amoeba has caused infection in some healthy children has raised the possibility that humans may lack immunity to B. mandrillaris. Human serum was examined for the presence of surface antibodies specific for this amoeba by immunofluorescence. Sera from adults contained titers of 1/64-1/256 of anti-B. mandrillaris antibodies (IgM and IgG classes), which did not cross-react with other amoebae. Cord blood contained very low antibody levels, but levels similar to those in adults were seen in serum of 1- to 5-year-old children.  (+info)

The role of actin in the temperature-dependent gelation and contraction of extracts of Acanthamoeba. (5/489)

The temperature-dependent assembly and the interaction of Acanthamoeba contractile proteins have been studied in a crude extract. A cold extract of soluble proteins from Acanthamoeba castellanii is prepared by homogenizing the cells in a sucrose-ATP-ethyleneglycol-bis-(beta-aminoethyl ether) N,N'-tetraacetic acid buffer and centrifuging at 136,000 g for 1 h. When this supernate of soluble proteins is warmed to room temperature, it forms a solid gel. Upon standing at room temperature, the gel slowly contracts and squeezes out soluble components. The rates of gelation and contraction are both highly temperature dependent, with activation energies of about 20 kcal per mol. Gel formation is dependent upon the presence of ATP and Mg++. Low concentrations of Ca++ accelerate the contractile phase of this phenomenon. The major protein component of the gel is actin. It is associated with myosin, cofactor, a high molecular weight protein tentatively identfied as actin-binding protein, and several other unidentified proteins. Actin has been purified from these gels and was found to be capable of forming a solid gel when polymerized in the presence of ATP, MgCl3, and KCL. The rate of purified actin polymerication is very temperature dependent and is accelerated by the addition of fragments of muscle actin filaments. These data suggest that Acanthamoeba contractile proteins have a dual role in the cell; they may generate the forces for cellular movements and also act as cytoskeletal elements by controlling the consistency of the cytoplasm.  (+info)

Isolation and electrophoretic analysis of nucleoli, phenol-soluble nuclear proteins, and outer cyst walls from Acanthamoeba castellanii during encystation initiation. (6/489)

A technique is described for isolating nuceoli from Acanthamoeba castellanii. Nuclei isolated by a modification of the technique of F. J. Chlapowski and R. N. Band (1971) are sonicated in a surcrose-Tris-MgSO4-KC1-Triton X-100 buffer and centrifuged on a linear sucrose gradient extending from 1.3 M to 1.5 M with a 2.6 M cushion, at 41000 rpm for 90 min. The only apparent contaminants in the nucleolar preparation are outer cyst walls. A procedure is described for the isolation of chemically pure outer cyst walls, and a comparison of the proteins with the nucleolar preparation reveals that outer cyst walls represent negligible contaminants. The ultrastructure of these isolated nucleoli examined with transmission electron microscopy is found to be identical with that of nucleoli from whole cells, fixed in an identical manner. The 50 nucleolar proteins separated by SDS gel electrophoresis have been examined throughout the growth cycle of Acanthamoeba and into the strat of induced encystment, at which time 10 protein bands disappear, 11 bands are observed to decrease, and 8 are seen to increase in concentration. Phenol-soluble proteins are extracted from the nucleolus which correspond to 29 of the 50 nucleolar proteins, with 17 of these proteins corresponding to nucleolar proteins that change at the onset of encystment. Thes nucleolar proteins are also compared with those of rat liver nucleoli by gel electrophoresis, resulting in the observation that extremely few protein homologies exist between the two. Numerous quantitative and qualitative changes in the gel pattern of phenol-soluble nuclear proteins during early and late log phase growth and the onset of stationary phase were also observed.  (+info)

Signal-mediated nuclear transport in the amoeba. (7/489)

The evolutionary changes that occur in signal-mediated nuclear transport would be expected to reflect an increasing need to regulate nucleocytoplasmic exchanges as the complexity of organisms increases. This could involve changes in both the composition and structure of the pore complex, as well as the cytosolic factors that mediate transport. In this regard, we investigated the transport process in amoebae (Amoeba proteus and Chaos carolinensis), primitive cells that would be expected to have less stringent regulatory requirements than more complex organisms. Colloidal gold particles, coated with bovine serum albumin (BSA) conjugated with simple (large T) nuclear localization signals (NLSs), bipartite (nucleoplasmin) NLSs or mutant NLSs, were used to assay nuclear import. It was found that in amoebae (1) the diameter of the particles that are able to enter the nucleoplasm is significantly less than in vertebrate cells, (2) the simple NLS is more effective in mediating nuclear import than the bipartite NLS, and (3) the nucleoporins do not appear to be glycosylated. Evidence was also obtained suggesting that, in amoebae, the simple NLS can mediate nuclear export.  (+info)

Visualization of actin fibers associated with the cell membrane in amoebae of Dictyostelium discoideum. (8/489)

Amoebae of Dictyostelium discoideum were attached to a surface coated with polylysine, and the upper portion of the cells was sheared off with a stream of buffer. Scanning and transmission electron microscopy showed that the cytoplasmic surface of the exposed membrane was covered with fibers consisting of actin-containing filaments. The actin was identified by its solubility properties and its ability to interact with muscle myosin.  (+info)

Amoeba proteus gets its name through two Greek words; Amoeba meaning change and proteus meaning Sea God. The Greek meaning describes this microbe as the Sea God Proteus that has an ever changing shape. Its ability to change shape is from the pseudopodia, which are common in eukaryotic microbes. The pseudopodia grants the microbe an ability to extend and contract in any shape possible. This extending and contracting is from the reversible assembly of actin sub-unites into microfilaments. Contraction is caused by the filaments near the cells end interact with myosin. While extension is caused by the actin reassembling itself back into its body. This is how the Amoeba proteus moves around. [2] Other than its pseudopodia, the Amoeba proteus can be described as unicellular, colorless, or transparent. The average size of an Amoeba proteus varies around from .2 to .3 mm in diameter but larger forms have been found measuring up to .5 mm in diameter which is visible to the eye. [3] Amoeba proteus ...
Define amoebas, amoebae, amebas, amebae. amoebas, amoebae, amebas, amebae synonyms, amoebas, amoebae, amebas, amebae pronunciation, amoebas, amoebae, amebas, amebae translation, English dictionary definition of amoebas, amoebae, amebas, amebae. also a·me·ba n. pl. a·moe·bas or a·moe·bae also a·me·bas or a·me·bae Any of various one-celled free-living or parasitic protozoans having no definite form...
Fig. 7. Alignment of the deduced amino acid sequence of amoeba SAMS2 with SAMS sequences of other organisms. Periods represent amino acids identical to those of MetK of E. coli, and dashes show gaps inserted for an optimal alignment of amino acids. *1, ATP-binding motif; *2, glycine-rich nanopeptide; *3, metal-binding sites; *4, a site for Cys-121 of human MAT1A, characteristic of liver enzymes; EC, E. coli; XB, X-bacteria; AC, Acanthamoeba castellanii; S2, SAMS2 of amoebae; PI, Phytophthora infestans; AP, Amoeba proteus. Complete genomic or cDNA sequences of SAMS proteins are available in GenBank, for E. coli (accession no. 1708999), A. castellanii (6016547), and P. infestans (23394401). Amino acid sequences of amoeba SAMS1 (U91602) and X-bacteria SAMS (AY324627) are from Choi et al. (Choi et al., 1997) and Jeon and Jeon (Jeon and Jeon, 2003).. ...
Amoebas are published as making food choices as a response to their environment. Like human lymphocytes amoebas surround cytes then digest them. Creating amoebas that are immunotransparent to the human immune system permits them to circulate absent immune attack from the body; creating immunotransparency is a strategy employed with nonhuman mammals thus breeding an immunotransparent amoeba may be literally millions or billions of times easier. Amoebas are publishes as making food choice comparisons; it is possible to make them tissue type specific or possibly even educated to prefer a diseased tissue type specific to a particular person.. The amoebas can be bred or trained to recognize then eat tissue types with particular surface chemistry such as cancer cytes or atherosclerotic lesions. The amoebas literally attack diseased tissue like a second immune system. artherosclerosis as well as cancer were the two most lethal diseases of the 20th century. amoebas that eat cholesterol plaques as well ...
... IT Services Private Limiteds website. Amoeba Technocrats IT Services Private Limited provides products and services via its various website(s). When you visit Amoeba Technocrats IT Services Private Limiteds site(s), its web server(s) record anonymous information such as the time, date and URL of the request. This information assists Amoeba Technocrats IT Services Private Limited to improve the structure of its website(s) and monitor their performance. Amoeba Technocrats IT Services Private Limited may use cookies on various web sites. Cookies are an industry standard and most major website(s) use them. A cookie is a small text file that our web sites may place on your computer. Usually, cookies are used as a means for Amoeba Technocrats IT Services Private Limiteds website(s) to remember your preferences. As such, cookies are designed to improve your experience of Amoeba Technocrats IT Services Private Limiteds website(s).. Amoeba Technocrats IT Services Private Limited ...
A study published in Nature Communications from researchers at the University of Geneva and Baylor College of Medicine show the amoeba Dictyostelium discoideum uses antimicrobial defense systems akin to phagocytes of the human innate immune system, and it evolved these defenses much earlier than initially thought.. D. discoideum is a soil living amoeba often referred to as "slime mold". These social amoebas tend to aggregate together, particularly during times of low resources, to form a mobile "slug" composed of ~100,000 individual amoebas. The slugs role is to disperse spores on the wind to seed new areas containing better resources. Within this slug, 80% of the amoeba will become spores, while approximately 20% will sacrifice themselves to form a stalk, a primitive spore dispersal method. About 1% of the amoeba though takes on defense duties by protecting the stalk/spore dispersion mechanism from invading bacteria.. It is this 1% that the researchers were interested in. Termed "sentinel ...
Naegleria cant live in salt water. It cant survive in properly treated swimming pools or in properly treated municipal water.. Most cases of N. fowleri disease occur in Southern or Southwestern states. Over half of all infections have been in Florida and Texas.. How Do People Get Infected With Brain-Eating Amoeba?. The term "brain-eating amoeba" makes the amoeba sound like a tiny zombie stalking your skull. But brains are accidental food for them.. According to the CDC, N. fowleri normally eats bacteria. But when the amoeba gets into humans, it uses the brain as a food source.. The nose is the pathway of the amoeba, so infection occurs most often from diving, water skiing, or performing water sports in which water is forced into the nose. But infections have occurred in people who dunked their heads in hot springs or who cleaned their nostrils with neti pots filled with untreated tap water.. A person infected with N. fowleri cannot spread the infection to another person.. How Do Amoebas Get in ...
You can use this worksheet and interactive quiz to determine how much you know about amoeboid movement. These guides will help you concentrate on...
Free-living Amoebae are unicellular protozoans common in aquatic ecosystems, which are also known to colonize Human created water systems such as water supply systems and swimming pools. Whilst in some ways these organisms can be helpful, consuming a range of Bacterial, Viral and Fungal pathogens, they have also been shown to cause a range of infections themselves, and can themselves be infected by a variety of pathogenic Bacteria, such as Legionella pneumophila, Mycobacteria, Pseudomonas aerugionosa and Acinetobacter baumannii. Whilst most Bacteria are consumed and digested by the Amoebae, these pathogenic species have been shown to be able to resist digestion, instead surviving within the Amoebae, where they receive protection from biocides and antibiotics, later emerging to cause infections in Humans. ...
Biology Assignment Help, Amoebae - protozoan, Amoebae - Protozoan Amoebae may be naked or enclosed in tests or shells. The marine, freshwater and parasitic naked amoebae have large commonly tubular lobopodia or fine strap like filopodia that are used for locomotion and feeding. The shelled
Scientists used to think amoebas had always produced asexually, but it turns out a long time ago, there were mommy amoebas and daddy amoebas, and when they loved each other very, very much, you got little baby amoebas. After a few million years or so, however, the amoebas decided it just wasnt worth the effort and it made a lot more sense reproducing without getting into the whole, "You forgot our anniversary" and "do these vacuoles make my protist look fat?" thing. What this means is, while we used to believe that sexual reproduction represented an advance over asexual, in fact, its the other way around. This news is disappointing to the rest of us who still view sex as at least mildly entertaining, but maybe when youve been on the planet as long as amoeba have, you start to see things differently ...
Free-living amoebae (FLA) are parasites within both humans and animals causing a wide range of symptoms and act as hosts of, and vehicles for phylogenetically diverse microorganisms, called endocytobionts. The interaction of the FLA with sympatric microorganisms leads to an exceptional diversity within FLA. Some of these bacteria, viruses, and even eukaryotes, can live and replicate intracellularly within the FLA. This relationship provides protection to the microorganisms from external interventions and a dispersal mechanism across various habitats. Among those intracellularly-replicating or -residing organisms there are obligate and facultative pathogenic microorganisms affecting the health of humans or animals and are therefore of interest to Public Health Authorities. Mimiviruses, Pandoraviruses, and Pithoviruses are examples for interesting viral endocytobionts within FLA. Future research is expected to reveal further endocytobionts within free-living amoebae and other protozoa through co
Amoeba starts the game by making its sound and movement. After that Amoeba makes sound and movement of some other animal in the game. For example a horse. Then player of the horse role has to reply by horses sound and movement and then make some other animal routines etc. If the horse does not notice its turn or makes wrong sounds or movements player falls back in the evolution and becomes an amoeba. All other players rise a step in the evolution eg. leader (former amoeba) becomes a fish and the ex-fish becomes a mouse etc. New amoeba then starts the game again. Sounds and movements remain the same. ...
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About an hour after leaving Dr. Martins office Jayvas began making even more grunting noises and was breathing even faster. Jayvas was taken to see Dr. Terrence Neff at CDA pediatrics. While bringing Jayvas into the office blood was noticed in his mouth. Jayvas was brought in emergently without an appointment. Dr. Neff saw Jayvas. Dr. Neff saw the blood in Jayvas mouth. Dr. Neff noted that Jayvas was breathing ninety breaths per minute. Dr. Neff noted that Jayvas was making grunting noises while breathing. Dr. Neff said Jayvas was back to the same condition as he was when he was admitted to Kootenai Hospital. Dr. Neff said he did not know what was wrong with Jayvas. Dr. Neff went and made a phone call and came back to the room, saying he did not know what was wrong with Jayvas. Dr. Neff said that he wanted Jayvas to be admitted and seen by a specialist in Spokane at Sacred Heart Childrens Hospital. Dr. Neff said to drive Jayvas to the hospital. When asked about having Jayvas transported by ...
Protists, Pseudopods are unicellular organisms characterized by movement using pseudopods, which can act in both locomotion and feeding behaviors. These slow movers are easy to follow and observe.
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This class was anticipated by some biologists like Jahn, who grouped all amoebae with granular pseudopodia together,[1] but most split the lobose amoebae into testate Testacealobosia and naked Gymnamoebia. These latter are polyphyletic, but molecular trees by Bolivar et al.[2] identified a core monophyletic subgroup. Subsequent studies showed the testate lobose amoebae belong to the same group, which was thus renamed Lobosea sensu stricto[3] or Tubulinea.[4]. ...
Living Free, cosmopolitan amoebae from genus present a serious risk to human health. viruses, fungi, and protist. However, their anti-amoebic potential has not been fully tested yet. The aim of this study was to assess silver nanoparticles (AgNPs) and platinum nanoparticles (PtNPs) anti-amoebic activity and influence on the amoebae adhesion to the surface of four different groups of contact lensesclassified according to the Food and Drugs Administration (FDA) guidelines. The obtained results show that both tested nanoparticles were effective against trophozoites and decreased the amoebae adhesion to the contact lens surface. AgNPs demonstrated better anti-amoebic activity to cytotoxicity dependence and decreased amoebae adhesion within a wider spectral range of the examined contacts. Our research also verified that ionization following to hydration from the contact lens materials is an essential parameter influencing the adhesion towards the contact lens surface area. In conclusion, gold ...
A new species of naked amoeba, Platyamoeba pseudovannellida n.sp., is described on the basis of light microscopic and fine structural features. The amoeba was isolated from the Salton Sea, California, from water at a salinity of ca. 44parts per thousand, Locomotive amoebae occasionally had a spatulate outline and floating cells had radiating pseudopodia, sometimes with pointed tips. Both these features are reminiscent of the genus Vannella. However, the surface coat (glycocalyx) as revealed by TEM indicates that this is a species of Platyamoeba. Although salinity was not used as a diagnostic feature, this species was found to have remarkable tolerance to fluctuating salinity levels, even when changes were rapid. Amoebae survived over the range 0parts per thousand to 150parts per thousand, salt and grew within the range 0parts per thousand to 138parts per thousand salt. The generation time of cells averaged 29 h and was not markedly affected by salt concentration. This is longer than expected for ...
This chapter summarizes the available information on amoeba-fungus interactions and speculates on the origins of fungal virulence for mammalian hosts. Other organisms such as slime molds have ameboid cells that behave like amoebae in movement and feeding. Amoebae and slime molds are grouped under the kingdom Protozoa. Various studies have reported specific types of interactions and responses when amoebae and fungi are brought into contact in the laboratory. Amoeba phagocytosis can be induced by arachidonic acid and prostaglandins, a phenomenon that may be highly relevant to fungus-amoeba interactions since many species of fungi produce arachidonic acid derivatives and prostaglandins. Although each of these observations was made under artificial laboratory conditions, they suggest certain specificity to amoeba-fungus interactions that buttresses the argument that these two types of organisms frequently interact in the environment. In the late 1990s, the author revisited the question of amoeba-fungus
In material collected from Tannoch Loch, Dunbartonshire, a large free-living, hitherto undescribed amoeba was found. Individual specimens vary in length from 420 to 500µ and in width from 70 to 140µ. Viewed over a black background this amoeba looks dense, white, and opaque, while in transmitted light it has a dusky, almost black, hue, due to the presence in the endoplasm of a large number of small crystals uniform in size, slender and pointed at both ends. There is always a uroid at the hinder end surrounded by bits of debris. The one large nucleus is without a karyosome but has masses of chromatin scattered through the nuclear substance. As a rule there is only one large contractile vacuole, but occasionally a few small ones may be seen at the hinder end. A certain number of nutritive spheres are always present. The author considers this amoeba to be a new species and names it Amoeba taylorae.. ...
Rivka Bracha and colleagues in the lab of Prof. David Mirelman in the Biological Chemistry Department had shown that expression of the gene coding for the toxic protein could be prevented by inserting a plasmid (a small loop of DNA) containing a copy of a specific part of that gene into the amoeba cell nucleus. Introducing the plasmid led to the modification of DNA "packing" proteins, causing the DNA-protein packages to become more tightly coiled - something like a tangled telephone cord - and causing an irreversible silencing of gene expression. In a recent paper published in PLoS Pathogens, the Weizmann scientists report the silencing of two additional virulence genes in the same amoebae using a similar plasmid-induced principle. The disabled amoebae, though rendered harmless, still display the same repertoire of surface antigens (markers recognized by the immune system) as the disease-causing strain. The scientists now plan to test the ability of these silenced amoebae to serve as a live ...
Aono et al. Royal Society Open Science). To make sure the amoeba entered the cities in an optimal way, the researchers used light (which the amoeba doesnt like) to illuminate certain channels that were too far apart or that it had already visited, and to stop it from entering several channels simultaneously.. To the teams astonishment, it didnt take exponentially longer for the amoeba to figure out a reasonable (nearly optimal) way to enter eight different channels than it did to enter four, despite the increase in the number of possible configurations.. "Interestingly," the team added, "the quality of the solution does not degrade despite the explosive expansion of the search space.". To be fair, conventional computers are pretty slick, and they can also solve the problem in linear time as it gets exponentially harder.. But they actually do it in a completely different way - the amoeba was constantly testing new body shapes at a constant rate and processed optical feedback at the same ...
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Liver abscesses are always preceded by intestinal colonization, which may be asymptomatic. Blood vessels may be compromised early by wall lysis and thrombus formation. Trophozoites invade veins to reach the liver through the portal venous system. E. histolytica is resistant to complement-mediated lysis-a property critical to survival in the bloodstream. In contrast, E. dispar is rapidly lysed by complement and is thus restricted to the bowel lumen. Inoculation of amebas into the portal system of hamsters results in an acute cellular infiltrate consisting predominantly of neutrophils. Later, the neutrophils are lysed by contact with amebas, and the release of neutrophil toxins may contribute to necrosis of hepatocytes. The liver parenchyma is replaced by necrotic material that is surrounded by a thin rim of congested liver tissue.The necrotic contents of a liver abscess are classically described as "anchovy paste," although the fluid is variable in color and is composed of bacteriologically ...
... - ARES Octarms X Amoeba M4 Assault Rifle AEG The ARES Octarms X Amoeba M4 Assault Rifle AEG comes in a
I thought todays Friday Science entry would be about my favorite amoebae and yesterdays seminar speaker. My boss was the seminar host for yesterday and she invited Dr. Adam Kuspa to speak about his current research with Dictyostelium (Dicty), the same organism we work with. Dicty are a soil amoeba that eats things like bacteria and yeast. They crawl around in the ground individually hunting for food and dividing until they run out of food. Then all the dicty cells in that area migrate together to form a slug (but not the kind of slug that leave the slime trails on your side walk). We are talking about 50,000 cells coming together and moving through the soil until they find a good spot to sort of plant themselves, usually some place kind of sunny. Then they form a stalk with a fruiting body on the end. The fruiting body is full of spores and when the food source returns or conditions are good, the spores can germinate back into single dicty cells. Pretty cool.. There are certain dicty cells in ...
Amoeboid motility requires spatiotemporal coordination of biochemical pathways regulating force generation and consists of the quasi-periodic repetition of a EPZ-6438 motility cycle driven by actin polymerization and actomyosin contraction. tensional stress and that wild-type cells develop two opposing EPZ-6438 "pole" forces pulling the front and back toward the center whose strength is modulated up and down periodically in each cycle. We demonstrate that nonmuscular myosin II complex (MyoII) cross-linking and motor functions have different roles in controlling the spatiotemporal distribution of traction forces the changes in cell shape and the duration of all the phases. We show that the time required to complete each phase is dramatically increased in cells with altered MyoII motor function demonstrating that it is required not only for contraction but also for protrusion. Concomitant loss of MyoII actin cross-linking leads to a force redistribution throughout the cell perimeter pulling inward ...
Research on Dictyostelium has a long history, the trend of which has been to add cell biology, natural products, and evolutionary biology research to the traditional studies of development. The methods presented here and the recent publication of the genome present vast new opportunities. Key Words Cellular slime mold natural products soil ameba amoeboid genome. In 1991, the archives of the Soviet Union and its satellites began to open and to inform us in the West about events that we had.... ...
The social amoeba, a soil-dwelling organism, also carries its own microbiome, and researchers at Baylor College of Medicine have discovered that sugar-binding proteins called lectins are essential for amoebas and bacteria living together.
Humans farm. So do ants and termites. But amoebas? Indeed they do, say scientists who have studied a kind of amoeba that might be the worlds tiniest
Usually ships in 3-5 business days. Amoeba hugs, you know, are often fatal. Show your love of amoebas and phagocytosis with this oh-so-fashionable pillow. • 18
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The ARES Amoeba AM-016 AEG Series comes in either tan or black and is the latest line of Amoeba AEGs which we all know to be more reliable than its predecessors. This particular M4 style is known as the Honey Badger from the popular computer game Call Of Duty. Ares are known for making affordable AEG that performs very well straight out of the box. They started selling their line of products in 2009 and have a good reputation ever since. Majority of their guns can be upgraded with their own line of parts. The Octarms rail system uses the keymod system with slots on the 3, 6, 9 and 12 oclock portion of the rail. ARES have also released the rail system individually with many additional accessories one can apply to it. It shoots at a steady 410 FPS which is a great outdoor gun to use, tested with a 7.4V Large Tamiya type of battery. Though it probably can take 11.1V we dont suggest it till you change the internal parts to be able to cope with increased pressure. Firing modes this gun has are are ...
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The organic shape of the Amoeba Bench brings a collaborative energy to any space it is in. Use the Amoeba as the centerpiece of a room, or in combination with other items from the Queue Series to bring your space to life. Dimensions: 48 x 33.5 x 19HWeight: 35 lbs.
Lyon (France), Rome, September 14th, 2017 - AMOEBA announced today that it has signed a distribution agreement for its BIOMEBA product with DREWO. This agreement is pending marketing authorization (MA) in Italy.The collaboration between DREWO and AMOEBA started in November 2015 with the signature of a Letter of Intention (LOI). In August 2016, both companies carried out a first field test in Italy for an industrial company in the automotive sector. This test, still ongoing today, has confirmed the effectiveness of BIOMEBA. Following this success, this car manufacturer wishes to start a new field test on another industrial site before the end of the year. Meanwhile, a second test has started in January 2017 with a client of DREWO from the food industry.
The Amoeba Front Grip Modular M-Lok. For use on airsoft guns that have a M-Lok handguard. Drop-in easy to assemble for a custom gun. Mounts on M-Lok rails. A solid grip that is heavy duty for use on the battlefield. Official Amoeba made product. Dimensions: 3.5 inches tall x 2.5 inches long
Lyon, 6 October 2016 - Official opening of Amoebas production factory in Lyon-Chassieu on October 4th, 2016. More than 150 guests attended the event among local politicians, investors, distributors, journalists, suppliers and employees. Jean-Jacques Selles, Mayor of Chassieu, David Kimelfeld, 1st Vice-President of Lyon Metropole in charge of Economy and Anne Pellet, Regional Councillor Representative, were present to cut the official ribbon and show their support for Amoéba, an innovation, 100% made in France.
Unlike its Amoeba counterparts, the Amoeba M4 CCP AEG Pistol is completely stockless, making it an extremely compact platform that runs 13 inches in length!
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ARES AMOEBA STRIKER SNIPER RIFLE - BK - ARES Amoeba STRIKER S1 Sniper Rifle - BLACK This airsoft sniper rifle is designed to be the ultimate starter entry range rifle.
Denim days are here. This Amoeba top features an abstract print, black zip closure and eclectic jacquard patches on shoulders and hem.Match it with our Amoeba A-line Denim Skirt and slinky heels. This piece is hand-blocked printed via traditional printers based in Jaipur, India. Our aim is to empower our local craftsme
bezeichnet eine Gattung der Amöben, siehe Amoeba (Gattung) ein Betriebssystem, siehe Amoeba (Betriebssystem) Diese Seite ist eine Begriffsklärung zur Unterscheidung mehrerer mit demselben Wort bezeichneter Begriffe
According to Jennifer Welsh for Live Science, amoebas are generally considered to reproduce asexually through a process called binary fission. This describes the act when the nucleus of one cell is...
Amoeboid motion: In the event of amoeboid movement, pseudopodia are included rather then cilia or flagella. In such cases, two cytoskeletal proteins termed actin and myosin receives polymerized. This generates vacancy and thats why cytoplasmic substance stream to address the vacancy that is established as a result of polymerization reaction. When amoeba moves, cytoplasm moves to the arm like extension referred to as pseudopodium ...
Infections from the amoeba are rare. Florida officials cited federal statistics showing that 28 infections were reported in the U.S. from 2003 to 2012, mostly from exposure to contaminated recreational water. A person cannot be infected with the amoeba by drinking contaminated water, state officials said, and the amoeba is not found in salt water ...
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Amoeba. Amoeba. Retrieved 12 August 2016. Ramírez, Erika. "Berner, 'All In A Day' Feat. YG, Young Thug & Vital: Exclusive Video ...
"Daniel Ash - Biography". Amoeba. McNear, Clay (21 March 1996). "Pic Hits for the week". Phoenix New Times. Retrieved 14 July ...
"amoeba , protozoan order". Encyclopedia Britannica. Retrieved 2015-11-23. Kelso AA, Say AF, Sharma D, Ledford LL, Turchick A, ... doi:10.1016/S0932-4739(00)80047-4. "Descriptions and articles about the Amoebas (Amoebozoa) - Encyclopedia of Life". ... amoeba Thiomargarita namibiensis is the largest bacterium, reaching a diameter of up to 0.75 mm Epulopiscium fishelsoni, a ...
Hangzoo (Korean: 행주) Boi B (Korean: 보이 비) Geegooin (Korean: 지구인) "amoeba culture". www.amoebaculture.com. "amoeba culture". www ... They are managed by the hip hop record label Amoeba Culture. The three group members have been childhood friends and started ... The group was later signed by the hip pop label Amoeba Culture and was renamed as Rhythm Power. The group gained mainstream ...
"Record Store Day 2012 Releases". Amoeba Music. 2012-04-12. Retrieved 2012-06-21. "New Multitudes feat. Jim James, Jay Farrar, ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. Official website. ...
"Embrace - Biography". Amoeba Music. Retrieved October 3, 2016. Andersen, Mark (2015-07-03). "Revolution Summer lives on - 30 ...
"One Album Wonders: Diane Hildebrand's Early Morning Blues and Greens". Amoeba Music. Retrieved May 31, 2017. Unterberger, ...
"Foghat Biography". Amoeba Music. Retrieved 19 January 2018. "Take slow ride to Bully's for Foghat". Times Record News. 28 May ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. "Hugh Masekela - Notes of Life". Discogs. discogs ...
Gil, Billy (September 17, 2014). "Check Out Amoeba's Blue Note Pop-Up Shop at Sonos Studio". Amoeba Music. Retrieved November 1 ... In September, Blue Note Records had a pop-up store in the gallery with partnership with Amoeba Music. From September 30 to ...
"Polychaos dubium". Amoebae on the Web. Retrieved 2009-10-01. Leidy, Joseph (1878). "Amoeba proteus". The American Naturalist. ... Unlike species of Amoeba, P. dubium lacks longitudinal ridges on its pseudopods. A few characteristics distinguish Polychaos ... The author who named the species later recognized it as different from species of Amoeba, and so designated it the type species ... Schaeffer, Asa A. (1916). "Notes on the specific and other characters of Amoeba proteusPall. (Leidy), A. discoides spec. nov., ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. "Hugh Masekela: Uptownship". Allmusic. allmusic. ...
"Humble Pie - Biography". Amoeba Music. Retrieved 13 January 2018. Hill, Kathleen (8 July 1989). "Group Starts Over" (Scan/ ...
"Money B & Chopmaster J Remember Tupac On What Would Have Been Shakur's 40th Birthday". Amoeba music. Retrieved 2013-06-10. " ...
"Rise Against / Face To Face (7")". Amoeba Music. Retrieved April 1, 2016. Yancey, Bryne (April 17, 2012). "Rise Against release ...
"Keep the Village Alive". Amoeba Music. Retrieved January 8, 2016. "Graffiti on the Train". Piccadilly Records. Archived from ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. "Hugh Masekela - Grrr". Discogs. discogs.com. ...
Amoeba Music". Amoeba.com. Retrieved 2014-07-04. Gordon, Jeremy (2014-05-28). "Andrew Bird to Release Handsome Family Covers ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. "Herb Alpert / Hugh Masekela - Herb Alpert / Hugh ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. "Hugh Masekela: Colonial Man". Discogs. discogs. ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. "Hugh Masekela: Technobush". Allmusic. allmusic. ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. "Hugh Masekela - Techno-Bush". Discogs. discogs. ...
One to Get Ready, Four...To Go!. Amoeba Music. Retrieved 2013-03-21. One to Get Ready, Four to Go. Allmusic. Retrieved 2017-04- ... Album cover image and description at Blogspot Album and album cover images, front & back at Amoeba Music. ...
"Hugh Masekela - Biography". Amoeba Music. amoeba.com. Retrieved 13 July 2017. Eder, Bruce. "Hugh Masekela - Grrr". Allmusic. ...
Naegleria fowleri is a free-living amoeba; it is a protist pathogen that is known to cause a fatal encephalitis in humans known ... Baig, A. M. , and Khan, N. A. , 2015, " Tackling Infection Owing to Brain-Eating Amoeba," Acta Trop., 142, pp. 86-88. [CrossRef ... Baig, A. M. , 2015, " Pathogenesis of Amoebic Encephalitis: Are the Amoebae Being Credited to an Inside Job Done by the Host ... Schuster, F. L. , and Visvesvara, G. S. , 2004, " Free-Living Amoebae as Opportunistic and Non-Opportunistic Pathogens of ...
A 12-year-old Arkansas girl who is recovering after battling a rare infection caused by a brain-eating amoeba went swimming at ... Recovering Brain-Eating Amoeba Victim Learns to Enjoy the Water Again. * By Alexis Shaw ... A 12-year-old Arkansas girl who is recovering after battling a rare infection caused by a brain-eating amoeba went swimming at ... Kali is thought to have contracted the brain-eating amoeba from a sandy bottomed lake at Willow Springs Water Park in Little ...
Amoeba is an interior lighting concept derived from the shape and movement of an amoeba. It appears to ooze outward from the ... Amoeba is an interior lighting concept derived from the shape and movement of an amoeba. It appears to ooze outward from the ... Amoeba is an interior lighting concept derived from the shape and movement of an amoeba. It appears to ooze outward from the ... Amoeba is an interior lighting concept derived from the shape and movement of an amoeba. It appears to ooze outward from the ...
Amoeba: Blue balls are your friends. Fiery balls arent your friends. Collect the shield for invincibility. Free Funny Games ...
The scientists used this test to study the effects of a certain chemical that attracts the amoeba, a process called chemotaxis ... Experimenting with a simple amoeba, researchers have developed a new fluorescence-based test that could screen candidate ... they attached different labels to the alpha-part and to the beta/gamma-part of a G-protein from the amoeba Dictyostelium ...
... brain-eating amoeba has claimed its second young American victim this month. Christian Strickland, a 9-year-old from Henrico ... Earlier this month, Courtney Nash succumbed to the brain-eating amoeba after diving off a dock into the St. Johns River at her ... This week, health department officials confirmed that the deadly amoeba--officially known as "Naegleria fowleri"--was to blame. ... A parasite known as the "brain-eating amoeba" has claimed its second young American victim this month. ...
ameba or amoeba (both: əmē´bə), common name for certain one-celled organisms belonging to the phylum Sarcodina of the kingdom ... ameba or amoeba (both: əmē´bə), common name for certain one-celled organisms belonging to the phylum Sarcodina of the kingdom ... amoeba(ameba) Any single-celled eukaryote that is naked and changes shape by the irregular extension and retraction of ... common species of which the freshwater Amoeba proteus is the most familiar.. The term ameba is sometimes also used to refer to ...
this group contains most of the non-actinopod amoebae. Naked amoebae, testate amoebae, dictyostelid and myxomycete slime moulds ... large marine amoebae. About 15 genera, 50 species. Genera of amoebae for which no clear identity has been developed (after ... Mayorella (Gymnamoebae) a naked amoeba with conical pseudopodia, living cell.. Amoebae are frequently maligned as shapeless ... Groups of Heterotrophic Amoebae. Name of group Organization Composition / sample genera Acantharea. radiolaria. Very diverse, e ...
Copyright © 2020 Amoeba, All Rights Reserved.. Amoeba and the Amoeba Music mark and logo are trademarks of Amoeba Music Inc. ... Notice: Undefined index: title in file /home/amoeba_production/public_html/sections/news-contests.php on line 268. ... Notice: Undefined index: title in file /home/amoeba_production/public_html/sections/news-contests.php on line 259. Notice: ... Notice: Undefined index: title in file /home/amoeba_production/public_html/admin/tmp/compiled/site/%%89^892^8920CB0D%%news- ...
It is too cold for an amoeba holiday. The amoeba doesnt mind. It doesnt even have a mind. It is just the microscopist who is ... Then the amoeba could feel the sun again. With its bright light that persuades the waterplants and algae to grow into a dense ... The amoebas pseudopods becoming agile in the warm water, the protoplasm quickly changing from fluid to solid and vice versa. ... In the morning the amoebas descent from the hill and hurry towards the shore. Its time to show off their surfing skills.. ...
An amoeba (/əˈmiːbə/; rarely spelled amœba, US English spelled ameba; plural am(o)ebas or am(o)ebae /əˈmiːbiː/), often called ... Amoebas are more than just blobs Sun Animacules and Amoebas Molecular Expressions Digital Video Gallery: Pond Life - Amoeba ( ... "Amoeba Lyrics". Metro Lyrics. Retrieved 3 May 2017. The Amoebae website of Maciver Lab of the University of Edinburgh brings ... "Amoebae: Protists Which Move and Feed Using Pseudopodia". Tree of Life web project. "The Amoebae". The University of Edinburgh ...
A better understanding of amoeba reproduction could one day help scientists to control dysentery and other amoeba-borne ... Amoeba reproduction is an asexual event in which the organism doubles its genetic material, creates two nuclei and then sets ... According to a report published today in the journal Nature, amoebas sometime seek a midwife when the going gets tough. The ... The team found that in a number of cases, a third amoeba came to the rescue, lodging itself between mother and daughter, and ...
Brain-eating amoeba. N. fowleri lives in bodies of warm freshwater and invades the nervous system through the nose. After ... Infographic: Brain-Eating Amoebas Life Cycle]. The result is a type of brain infection known as primary amebic ... A few days later, tests showed no signs of the parasite in Kalis system; the amoebas seemed to have been killed and cleared ... The doctors also tried an experimental drug, which was initially developed for breast cancer, but had shown some amoeba-killing ...
Amoeba Music, Berkeley. Housed in Berkeleys historic Amoeba building-the center of the citys Free Speech Movement during the ... Housed in Berkeleys historic Amoeba building-the center of the citys Free Speech Movement during the 1960s-this iconic shop ...
The amoeba, whose scientific name is Naegleria fowlerii, can cause a rare and devastating infection of the brain, according to ... Florida Confirms Case of Brain-Eating Amoeba The announcement comes just days after the death of an 11-year-old SC girl. ... Of 133 people known to have been infected with the brain-eating amoeba in the United States from 1962 to 2014, only three ... The confirmation of the case in Florida comes just days after 11-year-old Hannah Collins succumbed to the amoeba after swimming ...
A Brain-Eating Amoeba Just Claimed Another Victim. Naegleria fowleri lays waste to cells in the brain, leading to a grisly ... As rare as PAM is, the amoeba that causes it is common in freshwater. Epidemiologists have found it in lakes and rivers as far ... Stabiles doctors probably werent looking for brain-eating amoebas when he first arrived. The symptoms of Naegleria infection ... Last month, researchers at UC San Diego announced they had discovered three new molecular targets for treating the amoeba, ...
Rogue Amoeba Paul Kafasis of Rogue Amoeba on Fission, their new audio editing tool, MacVoices, 2006-09-20. ... Rogue Amoebas best-known products are Audio Hijack and Audio Hijack Pro. The Audio Hijack programs allow for users to capture ... Rogue Amoeba began in 1998 when Alex Lagutin and Paul Kafasis began working together, first on the release of a small shareware ... Rogue Amoeba Software, Inc. is a Macintosh software company that produces audio software, specializing in applications for ...
A brain-eating amoeba has killed at least 10 people in Pakistans most populous city since May, a World Health Organization ... The amoeba travels from the nasal membranes to the brain. Symptoms are initially very mild, including a headache, stiff neck, ... ISLAMABAD Oct 9 (Reuters) - A brain-eating amoeba has killed at least 10 people in Pakistans most populous city since May, a ...
... "amoeba"[All Fields] OR "amoeba"[MeSH Terms] OR "amoeba"[All Fields] OR "ameba"[All Fields]) AND ("signal transduction"[MeSH ... A set of genes conserved in sequence and expression traces back the establishment of multicellularity in social amoebae. ... Search: genomics, differentiation, cell motility, amoeba, signaling *. Format. Summary. Summary (text). Abstract. Abstract ( ...
Re: amoeba, a chess en... John Colvin via Digitalmars-d-announce. * *Re: amoeba, a ches... Richard Delorme via Digitalmars-d- ... Re: amoeba, a chess en... extrawurst via Digitalmars-d-announce. * *Re: amoeba, a ches... Richard Delorme via Digitalmars-d- ... Re: amoeba, a chess en... Johan Engelen via Digitalmars-d-announce. * *Re: amoeba, a ches... Iain Buclaw via Digitalmars-d- ... Re: amoeba, a ches... Richard Delorme via Digitalmars-d-announce. * *Re: amoeba, a ... Johan Engelen via Digitalmars-d-announce ...
... amoebas are generally considered to reproduce asexually through a process called binary fission. This describes the act when ... Sexual behavior between amoebas has never been observed. If the theory is accurate, it would not indicate that amoebas ... Asexual reproduction is immediately advantageous because it is quick as an amoeba can essentially make a copy of itself at will ... Scientists believe that all animal life sprung forth from the evolution of single-celled organisms such as amoebas. Most ...
Over time the two sides have split apart, like an amoeba dividing, separating into distinct spheres that share little common ... This article appeared in the United States section of the print edition under the headline United States of Amoeba ...
We are Ameba, a creative studio that helps companies stand out on every step of their growth with a user-centric approach. From ... We are Ameba, a creative studio that helps companies stand out on every step of their growth with a user-centric approach. From ...
Amongst these, as has already been indicated by letters to NATURE, is Amœba-the animal with the study of which many zoological ... Amongst these, as has already been indicated by letters to NATURE, is Amœba-the animal with the study of which many zoological ... KERR, J. Supplies of Amœba proteus for Laboratories. Nature 102, 166 (1918). https://doi.org/10.1038/102166a0 ...
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  • Most experts think that PAM is underdiagnosed- the average mortality rate in the US might be closer to 16 people per year -but even so, the odds of any one person succumbing to a brain-eating amoeba are vanishingly slim. (wired.com)
  • But with recent cases in Florida and Arkansas drawing attention to the killer amoeba, the Orlando Sentinel recently asked experts how N. fowleri attacks and what we can do to stay safe. (ajc.com)
  • The authors noted that tap water in the U.S. has not historically been a common source of exposure to N. fowleri , a free-living amoeba commonly found in warm, typically untreated freshwater such as lakes, ponds, and rivers. (medpagetoday.com)
  • In both cases, municipal water sources tested negative for the amoeba and identification of PAM only occurred after treatment was not effective -- in the first case, the patient was declared brain dead before N. fowleri infection was confirmed, while in the second, identification occurred during the autopsy. (medpagetoday.com)
  • The authors also cautioned that N. fowleri cysts and trophozoites are fairly resistant to chlorine disinfection, but it remains uncertain how the amoeba arrived at the patients' homes and how it was able to colonize the household hot water systems. (medpagetoday.com)
  • Because it typically presents in healthy individuals, N. fowleri is not categorized as an opportunistic amoeba, as are Acanthamoeba and Balamuthia , but rather as a pathogen. (eol.org)
  • Because these were the first U.S. cases of amoeba spreading through disinfected home water supplies, there are no formal recommendations to kill or prevent N. fowleri in this setting. (foxnews.com)
  • While N. fowleri is profiled as a warm-weather amoeba found primarily in Southern states, CDC tracking has increasingly found incidences of infection in Northern states as well - expanding its believed geographic range. (foxnews.com)
  • Chlorine kills the amoeba, said Assistant Health Secretary J.T. Lane. (cnn.com)
  • Assistant Professor Katherine Ralston's discoveries about how a parasitic amoeba kills cells reveal a fundamental process in biology. (ucdavis.edu)
  • A University of California, Davis, microbiologist who studies how a parasitic amoeba kills cells has been named as a 2016 Pew scholar in the biomedical sciences by the Pew Charitable Trusts. (ucdavis.edu)
  • Microbiologists often use the terms "amoeboid" and "amoeba" interchangeably for any organism that exhibits amoeboid movement. (wikipedia.org)
  • Typically, an amoeba moves by extending a pseudopod, attaching it to the substrate and filling it with cytosol, then releasing its rear portion from attachment to the substrate, which results in the organism being propelled forward. (wikipedia.org)
  • Amoeba reproduction is an asexual event in which the organism doubles its genetic material, creates two nuclei and then sets about dividing into two cells. (scientificamerican.com)
  • He said the CDC does not advise health or environmental departments to test for the amoeba, but to assume that the organism was present wherever there is warm water. (baltimoresun.com)
  • He said people can't become sick by drinking water with the amoeba because stomach acid would kill the organism. (baltimoresun.com)
  • The Centers for Disease Control and Prevention says the amoeba is a single-cell living organism commonly found in warm fresh water like lakes and rivers. (mysanantonio.com)
  • THURSDAY, Aug. 22 (HealthDay News) -- Miltefosine, a potentially life-saving experimental drug to treat people infected with a rare but deadly brain-eating amoeba, is now available to U.S. doctors directly from the U.S. Centers for Disease Control and Prevention, the agency announced Thursday. (medicinenet.com)
  • The amoeba was found in a sample taken from a fire hydrant at the same location that tested positive for the amoeba two years ago, CBS affiliate WWL reports . (cbsnews.com)
  • Rogue Amoeba Software, Inc. is a Macintosh software company that produces audio software, specializing in applications for audio capture. (wikipedia.org)
  • Rogue Amoeba Software today released Nicecast 1.7, an update to its software that allows you to easily broadcast audio on Mac OS X. Version 1.7 brings fully custom MP3 settings, and features an enhanced VoiceOver plugin. (mactech.com)
  • A 12-year-old Arkansas girl who is recovering after battling a rare infection caused by a brain-eating amoeba went swimming at a hospital pool on Friday, her rehabilitation physician said. (go.com)
  • Doctors who believe they have a patient with an infection caused by a so-called "free-living amoeba" who could benefit from treatment with miltefosine should contact the CDC to consult with an expert in these cases. (medicinenet.com)
  • Symptoms of the brain infection caused by the amoeba start about five days after infection and can include stiff neck, confusion, lack of attention to people and surroundings, loss of balance, seizures and hallucinations, the CDC said. (usatoday.com)
  • CHARLESTON, S.C. - An 11-year-old South Carolina girl has irreparable brain damage after contracting a rare, often-fatal infection caused by an amoeba from a river where she was swimming, according to a Facebook page set up on her behalf. (foxnews.com)
  • Two children appear to be recovering from a usually deadly infection caused by the "brain-eating ameba" with the help of an experimental antibiotic supplied by the Centers for Disease Control and Prevention (CDC). (medscape.com)
  • Infections from the amoeba are rare but almost always fatal. (cbsnews.com)
  • Following the deaths of two people from Louisiana who contracted brain-eating amoeba infections from their own home water systems last year, the U.S. Centers for Disease Control and Prevention and the U.S. Food and Drug Administration are warning people to follow appropriate guidelines when using a popular home remedy for sinus infections. (foxnews.com)
  • Naegleria infections occur when water contaminated with the amoeba enters the body through the nose, according to the US Centers for Disease Control and Prevention (CDC). (rt.com)
  • It's worth noting that infections from "brain-eating" amoebas are rare. (yahoo.com)
  • Most of the free-living freshwater amoebae commonly found in pond water, ditches and lakes are microscopic, but some species, such as the so-called "giant amoebae" Pelomyxa palustris and Chaos carolinense, can be large enough to see with the naked eye. (wikipedia.org)
  • The microscopic amoeba is typically found in warm, freshwater lakes and rivers (particularly in southern-tier states), as well as hot springs, according to the CDC . (yahoo.com)
  • An 8-year-old Orange County girl whose brain apparently was invaded by a microscopic amoeba while she was swimming in Starke Lake was in a coma Monday in a Gainesville hospital where doctors tried an experimental procedure to save her life. (orlandosentinel.com)
  • They noted that the geographic pattern of this climate-sensitive, thermophilic amoeba seems to be shifting up from the southern U.S., with more cases reported in warm freshwater locations after localized heat waves. (medpagetoday.com)
  • Commonly found in warm freshwater, the amoeba enters the body through the nose and travels up to the brain and the spinal cord where it destroys brain tissue, causing the disease primary amoebic meningoencephalitis (PAM). (abc.net.au)
  • The amoeba is found in warm freshwater lakes, rivers and hot springs. (click2houston.com)
  • The amoebas enter the body through the nose and travel to the brain , where they feed until the person dies. (factbites.com)
  • Some people have become infected when cleansing their nose with a neti pot of improperly treated tap water that is warm enough to harbor the amoeba, Adalja said. (baltimoresun.com)
  • The nose offers a direct conduit to the brain, where the amoeba quickly destroys tissue. (baltimoresun.com)
  • The amoeba enters the body through the nose and travels to the brain. (cnn.com)
  • The following are precautionary measures the CDC recommends people take to avoid the deadly amoeba:*Do not allow water to go up your nose or sniff water into your nose when bathing, showering, washing your face or swimming in small hard plastic/blow-up pools. (wdsu.com)
  • The amoeba enters the body through the nose and migrates through the olfactory nerve to the brain. (foxnews.com)
  • The amoebas swim up your nose and eat away at your brain until you die. (motherjones.com)
  • The brain-eating amoeba is usually found in in hot springs and warm, fresh water and works its way up the nose into the brain, according to CNN . (newsmax.com)
  • The amoeba enters the brain when water goes up the nose, so it may travel easier inside someone diving head first into water. (click2houston.com)
  • Amoebae typically ingest their food by phagocytosis, extending pseudopods to encircle and engulf live prey or particles of scavenged material. (wikipedia.org)
  • These amoebae can tolerate temperatures of up to 45 C. Infection with this parasite can cause primary amoebic meningoencephalitis ( PAM ), an acute and generally fatal disease of the central nervous system that has a rapid onset and typically results in death within a week or less. (eol.org)
  • Typically, PAM occurs in the hot summer months, when large numbers of people engage in recreational aquatic activities in freshwater bodies that may harbor these amoebae. (eol.org)
  • And here's a reason to keep up with pool maintenance: The amoeba is not typically found in pools because "it's killed by sufficient chlorine," notes Deresinski. (yahoo.com)
  • The amoeba typically infects people who are swimming or jumping in water feet-first, allowing it to go up their noses and travel to the brain. (foxnews.com)
  • We're pretty excited that this is a fundamental process that these pathogenic amoebae exploit in an exaggerated way to kill other cells," Ralston said. (ucdavis.edu)
  • In 2016 , Dr. Adam Kuspa , professor of biochemistry and molecular biology at Baylor College of Medicine, and his colleagues discovered another intriguing feature of the slug stage of the amoeba. (scienceblog.com)
  • In 2016, Kuspa and his colleagues discovered another intriguing feature of the slug stage of the amoeba. (eurekalert.org)
  • The amoebae are probably the last large area of protists which have to be fully documented and explored, although progress in that area is now taking place (Amaral, Silberman). (tolweb.org)
  • As with other protists, details of nuclear division profiles, mitochondria, extrusomes and other inclusions have helped to establish the identities for categories of amoebae - especially the heliozoa and radiolaria. (tolweb.org)
  • The amoeba is a member of a whole group of amoeboid eukaryotic protists called Amoebozoa . (wikipedia.org)
  • Leptomyxid amoebae encompass a diverse assemblage of amoeboid protists that have been implicated as encephalitis-causing agents. (nih.gov)
  • Not only does it occur in amoebae, but it is also found in algae, fungi and animals. (tolweb.org)
  • In marine ecosystems, radiolaria and foraminifera are significant members of communities, both as consumers and as producers (many planktonic marine amoebae and foraminifera from intertidal habitats harbour large numbers of symbiotic algae). (tolweb.org)
  • Dave Mosher for Scientific American states that modern scientists have recently begun to question whether amoebas are actually purely asexual or if the reproductive behavior scientists have studied in the past is merely the result of controlled laboratory conditions. (reference.com)
  • While amoebas commonly are presented as reproducing asexually, some researchers have argued that analysis of the evidence of sexual reproduction in several amoeboid lineages leads to the conclusion that amoeboid lineages are anciently sexual and asexual groups are a more recent development. (newworldencyclopedia.org)
  • Join the Amoeba Sisters as they compare and contrast asexual reproduction with sexual reproduction. (curriki.org)
  • From comparisons of molecular data and from life history data, it is clear that the amoeboid body form is an adaptive form and that the amoebae are polyphyletic. (tolweb.org)
  • When an ameba is divided artificially, the portion containing the nucleus forms a new cell membrane and continues as a whole animal, while the other portion lives only as long as its present food supply lasts, ultimately dying, since it cannot ingest food or reproduce. (encyclopedia.com)
  • The amoeba "breathes" using this membrane - oxygen gas from the water passes in to the amoeba through the cell membrane and carbon dioxide gas leaves through it. (factbites.com)
  • An amoeba is made of protoplasm, a viscous, clear material with a cell membrane separating the ectoplasm and the endoplasm, or the outer and inner parts of the cell. (reference.com)
  • By the time the tw paramecia realize they are in a perdicament, they start furiously moving around looking for an escape, but unfortunately for them, they're fate is sealed behind the cell membrane of the amoeba. (snotr.com)
  • A set of genes conserved in sequence and expression traces back the establishment of multicellularity in social amoebae. (nih.gov)
  • The confirmation of the case in Florida comes just days after 11-year-old Hannah Collins succumbed to the amoeba after swimming in a river in South Carolina. (go.com)
  • Radiolaria , class of protistan life forms (Protista) in the class Sarcodina, which also includes the amoeba and the foraminifera . (factbites.com)
  • If p is the probability that a single amoeba's descendants will die out eventually, the probability that N amoebas' descendants will all die out eventually must be p^N, since each amoeba is independent of every other amoeba. (braingle.com)
  • The scientists used this test to study the effects of a certain chemical that attracts the amoeba, a process called chemotaxis that requires G-protein signaling. (scientificamerican.com)
  • A better understanding of amoeba reproduction could one day help scientists to control dysentery and other amoeba-borne diseases. (scientificamerican.com)
  • If the theory is accurate, it would not indicate that amoebas necessarily reproduced with the use of typical sexual organs but would instead cause scientists to redefine the basic assumptions about which behaviors might define the act of sex. (reference.com)
  • Now the scientists have developed a way to successfully silence the expression of two additional virulence genes in the same amoebae. (innovations-report.com)
  • In a recent paper published in PLoS Pathogens, the Weizmann scientists report the silencing of two additional virulence genes in the same amoebae using a similar plasmid-induced principle. (innovations-report.com)
  • The scientists now plan to test the ability of these silenced amoebae to serve as a live vaccine by evoking an intestinal immune response. (innovations-report.com)
  • Now scientists have figured out how this amoeba makes us sick. (nhpr.org)
  • Together with the Viennese discoverers of the bacterium, scientists from ETH Zurich have now found a mechanism that they assume is crucial for the survival of Amoebophilus inside the amoeba. (eurekalert.org)
  • The name "histolytica" means "tissue-dissolving," because it was thought that the amoeba makes a toxin that destroys tissue. (ucdavis.edu)
  • To further assess the taxonomic placement of Balamuthia among the leptomyxid amoebae and to determine whether the members of the Leptomyxida form a monophyletic assemblage, we have sequenced 16S-like rRNA genes from representatives of three leptomyxid families. (nih.gov)