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E. Coli Escherichia coli , usually abbreviated to E. coli, (coli is latin for "of the colon") discovered by Theodor Escherich, a German pediatrician and bacteriologist, i…s one of the main species of bacteria that live in the lower intestines of mammals, known as gut flora. Specimens have also been located on the edge of hot springs. According to US Department of Health and Human Services Centers for Disease Control and Prevention, the E. coli strain O157:H7, one of hundreds of strains of the bacterium E. coli, causes illness in humans. Presence in surface water is a common indicator of fecal contamination. It belongs among the Enterobacteriaceae, and is commonly used as a model organism for bacteria in general. One of the root words of the family's scientific name, "enteric", refers to the intestine, and is often used synonymously with "fecal". The number of individual E. coli bacteria in the feces that one human passes in one day averages between 100 billion and 10 trillion. All the different kinds of fecal coli bacteria, and all the very similar bacteria that live in the ground (in soil or decaying plants, of which the most common is Enterobacter aerogenes), are grouped together under the name coliform bacteria. Technically, the "coliform group" is defined to be all the aerobic and facultative anaerobic, non-spore-forming, Gram-negative, rod-shaped bacteria that ferment lactose with the production of gas within 48 hours at 35 �C (95 �F). In the body, this gas is released as flatulence. E. coli cells are elongated, 1�2 �m in length and 0.1�0.5 �m in diameter. As Gram-negative organisms, coli are unable to sporulate. Thus, treatments which kill all active bacteria, such as Pasteurization or simply boiling, are effective for their eradication, without requiring the more rigorous sterilization which also deactivates spores. As part of their adaptation to mammalian intestines, coli grow best at the higher temperatures characteristic of such an environment, rather than the cooler temperatures found in the soil or other environment. Strains A strain of E. coli is a sub-group within the species that has unique characteristics that distinguish it from other E. coli strains. These differences are often detectable only at the molecular level; however, they may result in changes to the physiology or lifecycle of the bacterium. For example, a strain may gain pathogenic capacity, the ability to use a unique carbon source, the ability to take upon a particular ecological niche or the ability to resist antimicrobial agents. Different strains of E. coli are often host-specific, making it possible to determine the source of fecal contamination in environmental samples. For example, knowing which E. coli strains are present in a water sample allows to make assumptions about whether the contamination originated from a human, another mammal or a bird. New strains of E. coli evolve through the natural biological process of mutation, and some strains develop traits that can be harmful to a host animal. These virulent strains typically cause a bout of diarrhea that is unpleasant in healthy adults and is often lethal to children in the developing world. More virulent strains, such as O157:H7 cause serious illness or death in the elderly, the very young or the immunocompromised. Biology and biochemistry E. coli is Gram-negative, facultative anaerobic and non-sporulating. Cells are typically rod-shaped and are about 2 micrometres (μm) long and 0.5 μm in diameter, with a cell volume of 0.6 - 0.7 μm3. It can live on a wide variety of substrates. E. coli uses mixed-acid fermentation in anaerobic conditions, producing lactate, succinate, ethanol, acetate and carbon dioxide. Since many pathways in mixed-acid fermentation produce hydrogen gas, these pathways require the levels of hydrogen to be low, as is the case when E. coli lives together with hydrogen-consuming organisms such as methanogens or sulfate-reducing bacteria. Optimal growth of E. coli occurs at 37°C but some laboratory strains can multiply at temperatures of up to 49°C. Growth can be driven by aerobic or anaerobic respiration, using a large variety of redox pairs, including the oxidation of pyruvic acid, formic acid, hydrogen and amino acids, and the reduction of substrates such as oxygen, nitrate, dimethyl sulfoxide and trimethylamine N-oxide. Strains that possess flagella can swim and are motile. The flagella have a peritrichous arrangement. E. coli and related bacteria possess the ability to transfer DNA via bacterial conjugation, transduction or transformation, which allows genetic material to spread horizontally through an existing population. This process led to the spread of the gene encoding shiga toxin from Shigella to E. coli O157:H7, carried by a bacteriophage. Role as normal flora E. coli normally colonizes an infant's gastrointestinal tract within 40 hours of birth, arriving with food or water or with the individuals handling the child. In the bowel, it adheres to the mucus of the large intestine. It is the primary facultative organism of the human gastrointestinal tract. As long as these bacteria do not acquire genetic elements encoding for virulence factors, they remain benign commensals. Therapeutic use of nonpathogenic E. coli Nonpathogenic Escherichia coli strain Nissle 1917 is used as a probiotic agent in medicine, mainly for the treatment of various gastroenterological diseases, including inflammatory bowel disease. Role in disease Virulent strains of E. coli can cause gastroentritis, urinary tract infections, and neonatal meningitis. In rarer cases, virulent strains are also responsible for hæmolytic-uremic syndrome (HUS), peritonitis, mastitis, septicemia and Gram-negative pneumonia. Gastrointestinal infection Certain strains of E. coli, such as O157:H7, O121 and O104:H21, produce potentially-lethal toxins. Food poisoning caused by E. coli is usually caused by eating unwashed vegetables or undercooked meat. O157:H7 is also notorious for causing serious and even life-threatening complications like hemolytic-uremic syndrome (HUS). This particular strain is linked to the 2006 United States E. coli outbreak of fresh spinach. Severity of the illness varies considerably; it can be fatal, particularly to young children, the elderly or the immunocompromised, but is more often mild. Earlier, poor hygienic methods of preparing meat in Scotland killed seven people in 1996 due to E. coli poisoning, and left hundreds more infected. E. coli can harbor both heat-stable and heat-labile enterotoxins. The latter, termed LT, contains one "A" subunit and five "B" subunits arranged into one holotoxin, and is highly similar in structure and function to Cholera toxins. The B subunits assist in adherence and entry of the toxin into host intestinal cells, while the A subunit is cleaved and prevents cells from absorbing water, causing diarrhea. LT is secreted by the Type 2 secretion pathway. If E. coli bacteria escape the intestinal tract through a perforation (for example from an ulcer, a ruptured appendix, or a surgical error) and enter the abdomen, they usually cause peritonitis that can be fatal without prompt treatment. However, E. coli are extremely sensitive to such antibiotics as streptomycin or gentamicin. This could change since, as noted below, E. coli quickly acquires drug resistance. Recent research suggests that treatment with antibiotics does not improve the outcome of the disease, and may in fact significantly increase the chance of developing haemolytic uraemic syndrome. Intestinal mucosa-associated E. coli are observed in increased numbers in the inflammatory bowel diseases, Crohn's disease and ulcerative colitis.Invasive strains of E. coli exist in high numbers in the inflamed tissue, and the number of bacteria in the inflamed regions correlates to the severity of the bowel inflammation.
By foods like meat, milk, fruits, and vegetables people eat. So BE CAREFUL!
You can get E. coli poisoning in a few different ways. You can get it from coming into contact with feces, eating infected meat, or swallowing infected water from a pool, …lake, or irrigation canal.
E. coli and other intestinal bacteria could be transmitted if mom has poor hygiene. E. coli is passed by the fecal-oral route and is in the normal intestinal flora. When E. co…li is found in food it generally comes from fecal contamination. What typically makes a person ill is not the bacterial infection but the poisoning from the breakdown of the dead bacteria. If mom has a systemic infection of E. coli, she is at death's door and is not thinking about breast feeding.
By eating foods that are infected with the virus such as uncooked meats, milk, some fruits and vegetables, juices, etc.
Escherichia, the genus name of E. Coli. It is named after Theodor Escherich, who had discovered the bacterium.
Normally found in Beef and vegetable's. :+)
The E. coli that normally live in the human large intestines and produce vitamin K that the body uses would be best termed what?
a commensal relationship.
Normally, E. coli (Escherichia coli) bacteria can be detected in the intestines of human beings and animals. It can be found in the following places: 1. contamin…ated food, especially undercooked ground beef, unpasteurized milk and juice, soft cheeses made from raw milk, and raw fruits and vegetables 2. contaminated water which includes drinking and swimming in contaminated water 3. the bodies and environment of animals 4. the feces of infected people
an E. coli B strain, usually used for protein-expression.
It does not really grow in food. It is found in fecal matter (crap). Food that comes into contact with this crap becomes contaminated. Also, certain types of fertilizer can co…ntain e-coli. If this fertilizer is put on crops such as lettuce, then even a salad can be contaminated if not washed properly beforehand.
Mainly uncooked meat, make sure you keep uncooked food on the bottom shelf of the fridge, check the NHS website for more information
Escherichia coli (commonly abbreviated E. coli; pronounced /ˌɛʃɨˈrɪkiə ˈkoʊlaɪ/, named after Theodor Escherich) is a Gram negative rod-shaped bacterium that is commo…nly found in the lower intestine of warmblooded organisms (endotherms). Most E. coli strains are harmless, but some, such as serotype O157:H7, can cause serious food poisoning in humans, and are occasionally responsible for product recalls. The harmless strains are part of the normal flora of the gut, and can benefit their hosts by producing vitamin K2, and by preventing the establishment of pathogenic bacteria within the intestine. E. coli are not always confined to the intestine, and their ability to survive for brief periods outside the body makes them an ideal indicator organism to test environmental samples for fecal contamination. The bacteria can also be grown easily and its genetics are comparatively simple and easily manipulated or duplicated through a process of metagenics, making it one of the best-studied prokaryotic model organisms, and an important species in biotechnology and microbiology. E. coli was discovered by German paediatrician and bacteriologist Theodor Escherich in 1885, and is now classified as part of the Enterobacteriaceae family of gamma-proteobacteria. A strain of E. coli is a sub-group within the species that has unique characteristics that distinguish it from other E. coli strains. These differences are often detectable only at the molecular level; however, they may result in changes to the physiology or life cycle of the bacterium. For example, a strain may gain pathogenic capacity, the ability to use a unique carbon source, the ability to take upon a particular ecological niche or the ability to resist antimicrobial agents. Different strains of E. coli are often host-specific, making it possible to determine the source of faecal contamination in environmental samplesFor example, knowing which E. coli strains are present in a water sample allows to make assumptions about whether the contamination originated from a human, another mammal or a bird. New strains of E. coli evolve through the natural biological process of mutation and through horizontal gene transfer. More virulent strains, such as O157:H7 cause serious illness or death in the elderly, the very young or the immunocompromised E. coli normally colonizes an infant's gastrointestinal tract within 40 hours of birth, arriving with food or water or with the individuals handling the child. In the bowel, it adheres to the mucus of the large intestine. It is the primary facultative anaerobe of the human gastrointestinal tract. (Facultative anaerobes are organisms that can grow in either the presence or absence of oxygen.) As long as these bacteria do not acquire genetic elements encoding for virulence factors, they remain benign commensals.Nonpathogenic Escherichia coli strain Nissle 1917 also known as Mutaflor is used as a probiotic agent in medicine, mainly for the treatment of various gastroenterological diseases, including inflammatory bowel disease.
Do you mean have E. coli food poisoning or having E. coli in your organism? Everyone has E. coli in their intestines and it makes up a large proportion in your faeces. Howev…er, food contaminated with E. coli indicates faecal contamination which can cause food poisoning that would have such symptoms as diarrhea and abdominal pain. These poisonings are fatal very rarely.
How does Enterohemorrhagic e coli differ from the e coli that is normal flora in the intestinal tract?
E. coli is the abbreviated name of the bacterium in the Family Enterobacteriaceae named Escherichia (Genus) coli (Species). Dave Graham in the Department of Microbiology, Univ…ersity of Illinois at Urbana/Champaign, recently pointed me to information gleaned from G.W. Tannock's book, Normal Microflora,1995, Chapman & Hall, which reveals that approximately 0.1% of the total bacteria within an adult's intestines (on a Western diet) is represented by E. coli. Although, in a newborn infant's intestines E. coli, along with lactobacilli and enterococci represent the most abundant bacterial flora. In fact, it is for this reason that the organisms which happily inhabit the intestinal tract as normal flora are named enteric bacteria. The Family to which E. coli belongs (Enterobacteriaceae, is named what it is - because of the Greek word enterikos - which pertains to the intestine. The name Escherichia comes from the name of the person Escherich, who in 1885 first isolated and characterized this bacterium.
E. coli strains belongs to a group of bacteria known as shiga toxin-producing E.coli(steg) for short. it infects the digestive system and the kidneys it causes bloody diar…rhea, stomach cramps, nausea and vomiting you get these symptoms 3 to 4 days after you have been infected with E. ol. most people do not go see a doctor for this because they do not know E. coli caused that to happen to them.