However, if the infections are left untreated for long, chronic infections may develop with conditions such as kidney stone, abscesses, fistulas and, in some rare cases, cancer of the bladder, kidney damages or death. There are rarely any major complications associated with urinary tract infections. Pain around the hips, abdomen, or lower back region.Urine with appearances of blood and/or foul odor.Frequency, intense passing out of small amounts of urine.In some cases, urinary tract infections and other Escherichia coli infections are often unnoticed as they show no symptoms. Rarely they may be due to viral or parasitic infections. The most common yeasts causing complicated and uncomplicated urinary tract infections are Candida albicans and other Candida species (e.g., C.glabrata). are also capable of causing urinary tract infections. coli, other bacteria like Pseudomonas aeruginosa, Staphylococcus saprophyticus, Neisseria gonorrhoeae, Klebsiella pneumoniae, Enterococcus faecalis, Proteus spp. coli often produce alpha- and beta-hemolysins, which cause lysis of urinary tract cells.Īpart from E. coli use P fimbriae (pyelonephritis-associated pili) to bind urinary tract endothelial cells and colonize the bladder. Because women have a shorter urethra than men, they are more likely to suffer from an ascending UTI.Įscherichia coli are the main causative bacteria of UTIs they are responsible for 4 out of 5 cases of the infections. In ascending infections, fecal bacteria colonize the urethra and spread up the urinary tract to the bladder as well as to the kidneys (causing pyelonephritis), or the prostate in males. Naturally, the urinary system is immune to infections therefore, certain microorganisms must invade it before it can be infected. The urinary tract includes the kidneys, the bladder, the urethra and the ureters. coli, UPEC) is often indicated as the major cause of UTIs.īasically, the urinary tract comprises the parts of the body responsible for the removal of body waste and excess water, and the maintenance of electrolyte balance in the body. Escherichia coli and Urinary Tract Infections (UTIs) Escherichia coli and urinary tract infections are often discussed together as E. coli (EC) are classified on the basis of serological characteristics and virulence properties:Ībbreviated from Wikipedia. It is the strain behind the deadly June 2011 E. O157:H7 is also notoriousįor causing serious and even life-threatening complications such as hemolytic-uremic syndrome. coli can result from eating unwashed vegetables or undercooked meat. Gastrointestinal infectionĬertain strains of E. coli and related bacteria constitute about 0.1% of gut flora, and fecal-oral transmission is the major route through which pathogenic strains of the bacterium cause disease. 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.Į. coli strains are harmless, but some serotypes can cause serious food poisoning in humans. coli) is a Gram-negative, rod-shaped bacterium that is commonly found in the lower intestine of warm-blooded organisms (endotherms). Colonies of some strains have typical greenish metallic sheen (fig.E) but many of them grow without it (fig.F).Įscherichia coli (commonly abbreviated E. Approximately 50% of E.coli strains are sucrose negative (fig.A, D). Glucose fermentation with gas production, urea and H 2S negative, lactose positive (with exception of strain D - " late lactose fermenter" on Endo agar it looks like lactose negative).Īll four strains are mannitol positive (best seen in fig. Four different strains of Escherichia coli on Endo agar with biochemical slope (see here).
0 kommentar(er)
