ba ckground: there have been a number of reports indicating that garlic can inhibit helicobacter pylori ( h. pylori ) in vitro ; however, there is few clinical trials evaluating its effect in human infection. the aim of this study was to assess the effect of garlic consumption on urea breath test (ubt) results in patients with h. pylori infection. m ethods: we performed a randomized case-contro...

one pot solvent less synthesis of amidoalkylnaphthol derivatives via reaction of aldehydes, 2-naphthol and acetamide/urea in the presence of phenylphosphinic acid is  described. this methodology provides a simple synthetic route to amidoalkylnaphthols in good to high yields.

according to the unique properties and many applications of nano gold powder, it was prepared from an acid leaching tail solution. the low value residual gold ions existed in acid leaching tail solution in mouteh gold mine in iran with fellow heavy metals as pollutants (fe2+, cu2+, and zn2+). preparation of nano gold particles is achieved by two steps: first, by addition of ammonia as separatio...

RABINOWITZ, LAWRENCE, AND ROBERT A. GUNTHER. Urea transport in elasmobranch erythrocytes. Am. J. Physiol. 224(5) : 11091115. 1973.-The postulated presence of carrier-mediated transport of urea in elasmobranch erythrocytes was examined using cells of the spiny dogfish Squalus suckleyi. Under steady-state conditions with no net solute or net water flux and the external medium urea concentration 2...

LONG, WILLIAM SCOTT. Renal handing of urea in Rana catesbeiana. Am. J. Physiol. 224(Z) : 482-490. 1973.-The processes involved in renal urea excretion in the bullfrog (Rana catesbeiana) were studied by clearance, tissue, and micropuncture methods. According to micropuncture data with urea-14C and inulin-3H, secretion of urea against a concentration gradient from plasma to tubular fluid occurs a...

1 All teleost fish produce ammonia as a metabolic waste product. In embryos, ammonia 2 excretion is limited by the chorion and fish must detoxify ammonia by synthesizing urea via the 3 ornithine urea cycle (OUC). Although urea is produced by embryos and larvae, urea excretion 4 (Jurea) is typically low until yolk sac absorption, increasing thereafter. The aim of this study was 5 to determine th...

Urea metabolism was studied with nitrogen-starved cells of Chlorella vulgaris Beijerinck var. viridis (Chodat), a green alga which apparently lacks urease. Incorporation of radioactivity from urea-(14)C into the alcohol-soluble fraction was virtually eliminated in cell suspensions flushed with 10% CO(2) in air. This same result was obtained when expected acceptors of urea carbon were replenishe...