[Urease activity of bacteria in urine]. 1989

Y Arai, and H Takeuchi, and T Tomoyoshi, and K Tatewaki
Department of Urology, Shiga University of Medical Science.

Urea splitting bacteria are related to the formation of struvite or apatite. We investigated the urease activity of bacteria by two methods; the direct measurement of urease activity of viable bacteria and sonicated bacteria from amounts of ammonia by the indophenol method, and the measurement of urease activity by alkalization of infected urine. Proteus mirabilis and Pseudomonas aeruginosa had moderate activity of urease, and Morganella morganii and Staphylococcus epidermidis had the most powerful activity. P. mirabilis caused the strongest alkalization in infected urine.

UI MeSH Term Description Entries
D011513 Proteus mirabilis A species of gram-negative, facultatively anaerobic, rod-shaped bacteria that is frequently isolated from clinical specimens. Its most common site of infection is the urinary tract.
D011550 Pseudomonas aeruginosa A species of gram-negative, aerobic, rod-shaped bacteria commonly isolated from clinical specimens (wound, burn, and urinary tract infections). It is also found widely distributed in soil and water. P. aeruginosa is a major agent of nosocomial infection. Bacillus aeruginosus,Bacillus pyocyaneus,Bacterium aeruginosum,Bacterium pyocyaneum,Micrococcus pyocyaneus,Pseudomonas polycolor,Pseudomonas pyocyanea
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D013212 Staphylococcus epidermidis A species of STAPHYLOCOCCUS that is a spherical, non-motile, gram-positive, chemoorganotrophic, facultative anaerobe. Mainly found on the skin and mucous membrane of warm-blooded animals, it can be primary pathogen or secondary invader.
D014510 Urease An enzyme that catalyzes the conversion of urea and water to carbon dioxide and ammonia. EC 3.5.1.5. Phytourease,Urea Amidohydrolase,Amidohydrolase, Urea
D014545 Urinary Calculi Low-density crystals or stones in any part of the URINARY TRACT. Their chemical compositions often include CALCIUM OXALATE, magnesium ammonium phosphate (struvite), CYSTINE, or URIC ACID. Urinary Stones,Urinary Tract Stones,Calculi, Urinary,Calculus, Urinary,Stone, Urinary,Stone, Urinary Tract,Stones, Urinary,Stones, Urinary Tract,Urinary Calculus,Urinary Stone,Urinary Tract Stone
D014552 Urinary Tract Infections Inflammatory responses of the epithelium of the URINARY TRACT to microbial invasions. They are often bacterial infections with associated BACTERIURIA and PYURIA. Infection, Urinary Tract,Infections, Urinary Tract,Tract Infection, Urinary,Tract Infections, Urinary,Urinary Tract Infection
D014556 Urine Liquid by-product of excretion produced in the kidneys, temporarily stored in the bladder until discharge through the URETHRA.

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