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Topic: Entamoeba histolytica

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Entamoeba histolytica

Amoebiasis due to Entamoeba histolytica

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	Entamoeba - Wikipedia, the free encyclopedia
		Entamoeba is a genus of amoebozoa found as internal parasites or commensals of animals.
		Entamoeba histolytica is the pathogen responsible for amoebic dysentery, while others such as Entamoeba coli and E.
		Studying Entamoeba invadens, David Biron of the Weizmann Institute of Science and coworkers found that about one third of the cells are unable to separate unaided and recruit a neighboring amoeba (dubbed the "midwife") to complete the fission.
	en.wikipedia.org /wiki/Entamoeba (252 words)

	FDA/CFSAN Bad Bug Book Entamoeba histolytica
		histolytica cyst from the cysts of nonpathogenic intestinal protozoa by its appearance.
		histolytica cysts may be recovered from contaminated food by methods similar to those used for recovering Giardia lamblia cysts from feces.
		histolytica cysts must be distinguished from cysts of other parasitic (but nonpathogenic) protozoa and from cysts of free-living protozoa.
	www.seafoodhaccp.com /SeafoodData/BadBugBook/CHAP23.HTML (679 words)

	Entamoeba
		Padilla-Vaca, F., Ankri, S., Bracha, R., Koole, L. and Mirelman, D. (1999) Down regulation of Entamoeba histolytica virulence by monxenic cultivation with Eschericia coli 055 is related to a decrease in expression of the light (35-Kilodalton) subunit of the Gal/GalNac lectin., Infect.Immun.
		Wassmann, C., Hellberg, A., Tannich, E. and Bruchhaus, I. (1999) Metronidazole resistance in the protozoan parasite Entamoeba histolytica is associated with increased expression of iron-containing superoxide dismutase and peroxiredoxin and decreased expression of ferredoxin 1 and flavin reductase., J.Biol.Chem.
		Guillén, N. (1996) Role of signalling and cytoskeletal rearrangement in the pathogenesis of Entamoeba histolytica.
	www.bms.ed.ac.uk /research/others/smaciver/entamoeba.htm (1527 words)

	Preparation of Recombinant Human Monoclonal Antibody Fab Fragments Specific for Entamoeba histolytica -- Tachibana et ...
		Differentiation of pathogenic Entamoeba histolytica infections from nonpathogenic infections by detection of galactose-inhibitable adherence protein antigen in sera and feces.
		Diagnosis of amebic dysentery by detection of Entamoeba histolytica fecal antigen by an invasive strain-specific, monoclonal antibody-based enzyme-linked immunosorbent assay.
		Bacterial expression of a neutralizing mouse monoclonal antibody Fab fragment to a 150-kilodalton surface antigen of Entamoeba histolytica.
	cdli.asm.org /cgi/content/full/6/3/383 (2616 words)

	Real-Time PCR for Detection and Differentiation of Entamoeba histolytica and Entamoeba dispar in Fecal Samples -- ...
		Ribosomal RNA genes of ‘pathogenic’ and ‘nonpathogenic’ Entamoeba histolytica are distinct.
		The differentiation of invasive and non-invasive Entamoeba histolytica by isoenzyme electrophoresis.
		Phylogeny of the genera Entamoeba and Endolimax as deduced from small-subunit ribosomal RNA sequences.
	jcm.asm.org /cgi/content/full/40/12/4413 (3505 words)

	Medmicro Chapter 79
		The condition may be confirmed by identification of E histolytica in the stool or in abscess aspirates.
		The enzyme markers associated with pathogenicity are the presence of a b band and the absence of an a band for PGM.
		Virulent E histolytica strains are capable of penetrating intact intestinal mucosa.
	gsbs.utmb.edu /microbook/ch079.htm (3761 words)

	Isolation of emetine resistant clones of Entamoeba histolytica by petri dish agar method Indian Journal of Medical ...
		Emetine resistant clones of Entamoeba histolytica strain HM1: IMSS were isolated by using petri dish agar method after mutation with ethyl-methanesulphonate.
		Entamoeba histolytica, a protozoan parasite is the causative agent of human amoebiasis.
		Cloning of E. histolytica trophozoites was done4 and the colony forming efficiency of trophozoites (number of colonies formed/number of cells inoculated) was calculated.
	www.findarticles.com /p/articles/mi_qa3867/is_200001/ai_n8894301 (801 words)

	Entamoeba histolytica (Site not responding. Last check: 2007-10-12)
		The cysts of Entamoeba histolytica, shown below, measure between 10 and 20 µm in diameter.
		histolytica typically have a diameter of 15 to 20 µm.
		histolytica with a "finger-like" projection and ingested red blood cells (1000x).
	www.udel.edu /medtech/dlehman/medt372/E-hist.html (108 words)

	Entamoeba Basics (Site not responding. Last check: 2007-10-12)
		Entamoeba histolytica is the third leading cause of morbidity and mortality due to parasitic disease in humans (after malaria and schistosomiasis) and is estimated to be responsible for between 50,000 and 100,000 deaths every year.
		Differentiation among species of Entamoeba is clearly important for accurate diagnosis of individuals at risk and to prevent unnecessary or inappropriate chemotherapy.
		In many publications Entamoeba histolytica is cited as infecting one tenth of the world population, or 500 million people.
	homepages.lshtm.ac.uk /entamoeba/basics.htm (482 words)

	Molecular Biology of Entamoeba histolytica
		Entamoeba parasites infect up to 50 million people annually, and cause 100,000 deaths.
		Entamoeba trophozoites, then, multiply in the colon of infected hosts in the presence of a defined HDAC inhibitor.
		We have also determined that Entamoebae have an unusually large number of potential acetyl group modification sites on their histones, and that most of these are taken advantage of by trophozoites.
	www.med.nyu.edu /parasitology/faculty/deichinger.html (446 words)

	eMedicine - Amebiasis : Article by Maria A Horga, MD (Site not responding. Last check: 2007-10-12)
		Entamoeba dispar is a nonpathogenic protozoon morphologically identical to E histolytica.
		The trophozoites of E histolytica lyse the target cells by using lectin to bind to the target cells' membranes and using the parasite's ionophorelike protein to induce a leak of ions (ie, Na, Ca) from the target cell cytoplasm.
		Causes: Amebiasis is a parasitic infection caused by the protozoon E histolytica.
	www.emedicine.com /PED/topic80.htm (4687 words)

	Entamoeba histolytica Details, Meaning Entamoeba histolytica Article and Explanation Guide
		Entamoeba histolytica is a parasitic protozoan, belonging among the entamoebae.
		Amebiasis (or amoebiasis) is the name of the infection caused by E. histolytica.
		It is important to distinguish the E. histolytica cyst from the cysts of nonpathogenic intestinal protozoa by its appearance.
	www.e-paranoids.com /e/en/entamoeba_histolytica.html (591 words)

	Entamoeba histolytica
		Entamoeba histolytica is an anaerobic parasitic eukaryote protozoan, part of the genus Entamoeba.
		Diverse mammals such as dogs and cats can become infected but usually do not shed cysts (the environmental survival form of the organism) with their feces, thus do not contribute significantly to transmission.
		Entamoeba histolytica, as its name suggests, can actually bore through the enteric walls (histolysis = destroying tissue) and reach the blood stream.
	www.danceage.com /biography/sdmc_Entamoeba_histolytica (218 words)

	Division of Parasitic Diseases - Amebiasis Fact Sheet
		Amebiasis is a disease caused by a one-celled parasite called Entamoeba histolytica (ent-a-ME-ba his-to-LI-ti-ka).
		Because E. histolytica is not always found in every stool sample, you may be asked to submit several stool samples from several different days.
		Entamoeba histolytica and another amoeba, Entamoeba dispar, which is about 10 times more common, look the same when seen under a microscope.
	www.cdc.gov /ncidod/dpd/parasites/amebiasis/factsht_amebiasis.htm (737 words)

	txt001wpc: Molecular-based diagnosis of Entamoeba histolytica infection
		histolytica (first used by Schaudinn in 1903 and amended by Walker in 1911) has been retained for the protozoan parasite that causes invasive intestinal and extraintestinal amoebiasis, and the name Entamoeba dispar (designated by Brumpt in 1925) has been revived to refer to the non-pathogenic intestinal commensal organism that is visually indistinguishable from E.
		histolytica cysts, which are resistant to acidification, chlorination and desiccation, and capable of surviving in a moist environment for several weeks, are spread via the ingestion of faecally contaminated food or water.
		(1993) Differentiation of pathogenic Entamoeba histolytica infections from nonpathogenic infections by detection of galactose-inhibitable adherence protein antigen in sera and feces.
	www.expertreviews.org /99000599h.htm (4507 words)

	Entamoeba histolytica
		One of the most common diarrheal diseases is amebiasis, caused by the parasitic protist Entamoeba histolytica, which accounts for between 40-100,000 deaths annually.
		histolytica is primarily through the ingestion of cysts which may either result in asymptomatic colonization of the large bowl (as in approximately 90% of cases) or to symptomatic disease, usually amoebic colitis or amoebic liver abscesses.
		The Entamoeba genome is ~24 Mb in size with an undetermined karyotype.
	pathema.tigr.org /pathema/e_histolytica.shtml (397 words)

	Entamoeba
		Entamoebas are grouped into those that produce cysts with one, four or eight nuclei.
		Entamoeba gingivalis can be found within the spaces between the teeth and is associated with periodontal disease and gingivitis.
		Entamoeba coli is another entamoeba and is commensal of the human large intestine.
	www.microscope-microscope.org /applications/pond-critters/protozoans/sarcodina/entamoeba.htm (181 words)

	Introduction To The Entamoeba Species (Site not responding. Last check: 2007-10-12)
		Differentiation between the Entamoeba species is based on a number of factors and characteristics.
		At the present time there is only one of the Entamoeba species that is considered pathogenic.
		Entamoeba histolytica, is the causative agent of amebic dysentery and amebic liver abscess.
	www.practicalscience.com /introentamoeba.html (271 words)

	Roles of Cell Adhesion and Cytoskeleton Activity in Entamoeba histolytica Pathogenesis: a Delicate Balance -- Tavares ...
		Sequence of a cysteine-rich galactose-specific lectin of Entamoeba histolytica.
		Down regulation of Entamoeba histolytica virulence by monoaxenic cultivation with Escherichia coli O55 is related to a decrease in expression of the light (35-kilodalton) subunit of the Gal/GalNAc lectin.
		The fate of Entamoeba histolytica during establishment of amoebic liver abscess analyzed by quantitative radio-imaging and histology.
	iai.asm.org /cgi/content/full/73/3/1771 (4588 words)

	Entamoeba histolytica (Site not responding. Last check: 2007-10-12)
		Of these Entamoeba histolytica is the only species found to be associated with intestinal disease.
		histolytica could be differentiated by isoenzyme electrophoresis and now the application of molecular biology has finally confirmed the presence of two distinct species with the same morphological features.
		This permits detection of motile trophozoites of Entamoeba histolytica and can also provide information on the content of the stool ie the presence of leucocytes and red blood cells.
	www.btinternet.com /~ukneqas.parasitologyscheme/Faecal_Scheme/Teaching_Information/Protozoa/Amoebae/Entamoeba_histolytica/entamoeba_histolytica.html (632 words)

	Entamoeba histolytica - WrongDiagnosis.com
		Name of the Organism: Entamoeba histolytica This is a single celled parasitic animal, i.e., a protozoa, that infects predominantly humans and other primates.
		MMWR 34(9):1985: In October 1983, the Los Angeles County (California) Department of Health Services was notified by a local medical laboratory of a large increase in the laboratory's diagnoses of intestinal amebiasis (Entamoeba histolytica infection).
		Loci index for genome Entamoeba histolytica Available from the GenBank Taxonomy database, which contains the names of all organisms that are represented in the genetic databases with at least one nucleotide or protein sequence.
	www.wrongdiagnosis.com /fda_bad_bug_book/entamoeba_histolytica.htm (944 words)

	FindHealthNews : News, Reviews and Articles On Entamoeba
		Rockville, MD 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 genome of Entamoeba histolytica (E. histolytica) 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, scientists at the Institute for Genomic Research said.
		One published report said Giambi was being tested for a "potentially fatal" parasite, entamoeba histolytica, but a renowned microbiologist said yesterday that was overstating the severity of the condition.
	www.findhealthnews.com /files/Entamoeba.html (912 words)

	Entamoeba histolytica Genome Project
		The Entamoeba histolytica genome project is a collaborative effort involving sequencing from both TIGR and the Sanger Institute Pathogen Sequencing Unit.
		October 12/2006:PLEASE NOTE Entamoeba histolytica is currently being re-assembled and re-annotated.
		A brief summary of the Entamoeba histolytica genome project and a description of the organism.
	www.tigr.org /tdb/e2k1/eha1 (237 words)

	Chemicon - Product #3171 - LIGHT DIAGNOSTICS™ Amebiasis (Entamoeba histolytica) EIA Kit, ~48 tests
		Entamoeba histolytica is a protozoan parasite which is the causative agent of the disease amebiasis.
		Serological tests are useful in both detecting infection by E. histolytica and in excluding the organism from the diagnosis of other disorders (e.g.
		The antibody response is greatest in amebic liver abscesses, less in intestinal amebiasis and still less in asymptomatic cyst passers.(4) (5) Thus, serological testing for serum antibodies to E. histolytica has been shown to detect 90-100% of amebic liver abscesses, 80-100% of symptomatic intestinal amebiasis and 10-50% of asymptomatic cyst passers.
	www.chemicon.com /browse/productdetail.asp?ProductID=3171 (791 words)

	Immunochromatographic Strip-Based Detection of Entamoeba histolytica-E. dispar and Giardia lamblia Coproantigen -- ...
		Entamoeba histolytica, Giardia lamblia, and Cryptosporidium parvum are three of the major causes of protozoan-induced diarrheal
		A redescription of Entamoeba histolytica Schaudinn, 1903 (Emended Walker, 1911) separating it from Entamoeba dispar Brumpt, 1925.
		Molecular and cellular characterization of the 29-kilodalton peripheral membrane protein of Entamoeba histolytica: differentiation between pathogenic and nonpathogenic isolates.
	jcm.asm.org /cgi/content/full/37/9/3017 (1328 words)

	Revista do Instituto de Medicina Tropical de São Paulo - An attemp at reversibility and increase of the virulence of ... (Site not responding. Last check: 2007-10-12)
		An attemp at reversibility and increase of the virulence of axenic strains of Entamoeba histolytica
		BOS, H.J. Entamoeba histolytica: cytopathogenicity of intact amoebae and cell free extracts: isolation and characterization of an intracelular toxin.
		MARTINEZ-PALOMO, A. - Parasite factors of virulence, in the biology of Entamoeba histolytica.
	www.scielo.br /scielo.php?script=sci_arttext&pid=S0036-46651993000600005&lng=es&nrm=iso&tlng=en (882 words)

	The Intestinal Protozoan Parasite Entamoeba histolytica Contains 20 Cysteine Protease Genes, of Which Only a Small ...
		Entamoeba histolytica: increase of enterotoxicity and of 53- and 75-kDa cysteine proteinases in a clone of higher virulence.
		Transfection and transient expression of chloramphenicol acetyltransferase gene in the protozoan parasite Entamoeba histolytica.
		Thiol proteinase expression and pathogenicity of Entamoeba histolytica.
	ec.asm.org /cgi/content/full/2/3/501 (4358 words)

	Untitled Document
		The images presented in the Quiz #1 were trophozoites of Entamoeba histolytica/E. dispar; thus the physician's report (Entamoeba histolytica trophozoites present) was incorrect.
		Currently, there are immunoassays available that will confirm the presence of organisms in the Entamoeba histolytica/E. dispar group, as well as one immunoassay that will confirm the presence of the pathogen E.
		If your laboratory offers the immunoassay specific for Entamoeba histolytica, the computer comment could be: "If you want confirmation of the presence of Entamoeba histolytica, submit a fresh stool." Note: the immunoassays for Entamoeba histolytica or the Entamoeba histolytica/E. dispar group require fresh or frozen stools; formalinized specimens are not acceptable for testing.
	www.med-chem.com /Para/Prob%20of%20Month/Prob%20of%20Month1.htm (467 words)

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