Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:6.3.4.6 (urease)
 7,490 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

96 gastric mucosal biopsy specimens collected at endoscopy and placed into 3 ml 20% glucose were examined histologically, microscopically (Gram staining), by urease test, and by cultivation. The rate of positive findings ws 62.5% by urease test, 34.4% by cultivation, and 27.0% microscopically. By using simple selective solid media, the number of positive cultivations increased to 58.7%. Positive microbiological findings were established by one of three microbiological methods at a high percentage in gastric ulcers (87.5%) and at the lowest rate in duodenal ulcers (57.1%). Remarkable were the positive findings in 60% of patients with normal endoscopic results. In chronic gastritis the highest positivity rate was established histologically (52.6%). Antibiotics without bismuth preparations were used in the treatment of six patients. Check-up examinations yielded negative histological and microbiological findings only in two patients. We failed to affect the inflammatory activity of the gastric mucosa even when consolidation of the ulcer lesion was achieved.
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PMID:[Rapid detection and easy culture of Campylobacter pylori from human gastric mucosa]. 265 26

The Pasteur Yeasts System is a commercial prepared kit and scheme for the rapid (48 h) identification of 23 yeasts belonging to 7 genera. The method consists of two parts: a gallery of media to evaluate germ tube production, urease activity, tetrazolium reduction, cycloheximide sensibility and fermentation of three carbohydrates, and an auxanographic method to determine the assimilation pattern of 16 carbohydrates. This system was tested in comparison with API 20 C Auxanogram, Mycotube, Candida Check and conventional procedures to identify 40 yeast strains. Pasteur Yeasts System provided correct identifications for 97.5% of the organisms and proved to have a high reproducibility, accuracy and reliability. The method is useful and facilitates the identification of pathogenic yeasts from clinical specimens in the routine laboratory.
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PMID:Pasteur yeasts system, a test-kit for yeasts identification. Its evaluation in comparison with three commercial methods and conventional procedures. 324 63

Nitrogen (N) fertilization affects both ammonia (NH3) and greenhouse gas (GHG) emissions that have implications in air quality and global warming potential. Different cropping systems practice varying N fertilizations. The aim of this study was to investigate the effects of applications of polymer-coated urea and urea treated with N process inhibitors: NBPT [N-(n-butyl)thiophosphoric triamide], urease inhibitor, and DCD [Dicyandiamide], nitrification inhibitor, on NH3 and GHG emissions from a cotton production system in the Mississippi delta region. A two-year field experiment consisting of five treatments including the Check (unfertilized), urea, polymer-coated urea (ESN), urea+NBPT, and urea+DCD was conducted over 2013 and 2014 in a Cancienne loam (Fine-silty, mixed, superactive, nonacid, hyperthermic Fluvaquentic Epiaquepts). Ammonia and GHG samples were collected using active and passive chamber methods, respectively, and characterized. The results showed that the N loss to the atmosphere following urea-N application was dominated by a significantly higher emission of N2O-N than NH3-N and the most N2O-N and NH3-N emissions were during the first 30-50 days. Among different N treatments compared to regular urea, NBPT was the most effective in reducing NH3-N volatilization (by 58-63%), whereas DCD the most significant in mitigating N2O-N emissions (by 75%). Polymer-coated urea (ESN) and NBPT also significantly reduced N2O-N losses (both by 52%) over urea. The emission factors (EFs) for urea, ESN, urea-NBPT, urea+DCD were 1.9%, 1.0%, 0.2%, 0.8% for NH3-N, and 8.3%, 3.4%, 3.9%, 1.0% for N2O-N, respectively. There were no significant effects of different N treatments on CO2-C and CH4-C fluxes. Overall both of these N stabilizers and polymer-coated urea could be used as a mitigation strategy for reducing N2O emission while urease inhibitor NBPT for reducing NH3 emission in the subtropical cotton production system of the Mississippi delta region.
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PMID:Application effects of coated urea and urease and nitrification inhibitors on ammonia and greenhouse gas emissions from a subtropical cotton field of the Mississippi delta region. 2617