Nitrite stability and nitrosation potential in human gastric juice. 1981

S R Tannenbaum, and D Moran, and K R Falchuk, and P Correa, and C Cuello

Human gastric juice samples were investigated from high- and low-risk areas (Colombia and Boston) for factors which influence the stability of nitrite and its potential for nitrosamine formation. The samples from individuals with chronic atrophic gastritis and intestinal metaplasia were not reactive to nitrite and supported a rate of nitrosation largely compatible with the nitrite and thiocyanate concentration. The samples from other individuals contained factors which destroyed nitrite and inhibited nitrosation. There were several samples from both groups which had an elevated rate of nitrosation catalyzed by unknown factors. It is suggested that continued hypochlorhydria might deplete gastric juice of its natural protective factors and lead to an elevated risk of gastric cancer in agreement with our earlier etiological model [1].

UI MeSH Term Description Entries
D008404 Massachusetts State bounded on the north by New Hampshire and Vermont, on the east by the Atlantic Ocean, on the south by Connecticut and Rhode Island, and on the west by New York.
D009566 Nitrates Inorganic or organic salts and esters of nitric acid. These compounds contain the NO3- radical. Nitrate
D009573 Nitrites Salts of nitrous acid or compounds containing the group NO2-. The inorganic nitrites of the type MNO2 (where M Nitrite
D009602 Nitrosamines A class of compounds that contain a -NH2 and a -NO radical. Many members of this group have carcinogenic and mutagenic properties. Nitrosamine
D003105 Colombia A country in northern South America, bordering the Caribbean Sea, between Panama and Venezuela, and bordering the north Pacific Ocean, between Ecuador and Panama. The capital is Bogota.
D005750 Gastric Juice The liquid secretion of the stomach mucosa consisting of hydrochloric acid (GASTRIC ACID); PEPSINOGENS; INTRINSIC FACTOR; GASTRIN; MUCUS; and the bicarbonate ion (BICARBONATES). (From Best & Taylor's Physiological Basis of Medical Practice, 12th ed, p651) Gastric Juices,Juice, Gastric,Juices, Gastric
D005756 Gastritis Inflammation of the GASTRIC MUCOSA, a lesion observed in a number of unrelated disorders. Gastritides
D005757 Gastritis, Atrophic GASTRITIS with atrophy of the GASTRIC MUCOSA, the GASTRIC PARIETAL CELLS, and the mucosal glands leading to ACHLORHYDRIA. Atrophic gastritis usually progresses from chronic gastritis. Atrophic Gastritides,Atrophic Gastritis,Gastritides, Atrophic
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012306 Risk The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome. Relative Risk,Relative Risks,Risk, Relative,Risks,Risks, Relative

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