title: [Dynamics of endogenous bacterial nitrite formation in the stomach. 4. Localization and reciprocal action of nitrate and nitrite in the healthy human stomach].
abstract: The nitrate and nitrite concentrations of 42 fasting gastric juice samples of young healthy human volunteers were analysed. It could be shown by separate determination of the concentration in the real secrete and the mucous gel that the amount of nitrate in the gel is about ten times higher than in the real secrete. The former conception, after which nitrate only gets by swallowed saliva into the stomach, has to be completed. It is obvious that the mucigenous glands of the stomach, like the saliva glands, are also able of nitrate enrichment and secretion. These results are very important for the evaluation of nitrate as a precursor of cancerogenic N-nitroso compounds.
mesh_terms: D001419:Bacteria / Q000378:metabolism; D005750:Gastric Juice / Q000032:analysis*; D005753:Gastric Mucosa / Q000378:metabolism*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000032:analysis / Q000378:metabolism*; D009573:Nitrites / Q000032:analysis / Q000378:metabolism*; D013270:Stomach / Q000382:microbiology
chemical_list: D009566:Nitrates; D009573:Nitrites
vernacular_title: Dynamik der endogenen bakteriellen Nitritbildung im Magen. 4. Mitteilung: Lokalisation und Wechselwirkung von Nitrat und Nitrit im gesunden menschlichen Magen.