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1992 | 43 | 2 |

Tytuł artykułu

Adenosine deaminase activity in the human duodenal mucosa in relation to gastric acid secretion

Treść / Zawartość

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Adenosine deaminase (ADA) activity was estimated in mucosal specimens obtained endoscopically from the duodenal bulb. Three groups of subjects were studied: 1. 9 patients with achlorhydria, 2. 12 subjects with normal gastric acid secretion, 3. 5 patients with hypersecretion. Enzyme activity was measured by determination of ammonia liberated from the substrate according to the Chaney and Marbach method. In patients with hypersecretion the ADA activity was lower than in those with achlorhydria (p < 0.001) and normal acid secretion (p < 0.02). A significant negative correlation between ADA activity in the duodenal bulb mucosa and basal and maximal gastric acid outputs was found. The present study seems to indicate a possible relationship between gastric acid secretion and duodenal ADA activity.

Wydawca

-

Rocznik

Tom

43

Numer

2

Opis fizyczny

p.149-152,fig.

Twórcy

autor
  • J.Sniadecki Regional Hospital, 15-950 Bialystok, Sklodowska Str.25, Poland
autor

Bibliografia

  • 1. Mozsik G, Vizi F, Kutas J. Biochemical gradients in the human gastric and duodenal mucosa in relation to basal acid secretion. Scand J Gastroenterol 1977; 12: 461-464.
  • 2. Centelles JJ, Franco R, Bozal J. Distribution of adenosine deaminase in some rat tissues. Inhibition by ethanol and dimethyl sulfoxide. Comp Biochem Physiol 1987; 86B: 95-98.
  • 3. Ma PF, Magers TA. Comparative studies of human adenosine deaminases. Int J Biochem 1975; 6: 281-286.
  • 4. Franco R, Hoyle CHV, Centelles JJ, Bumstock G. Degradation of adenosine by extracellular adenosine deaminase in the rat duodenum. Gen Pharmac 1988; 19: 689-681.
  • 5. Namiot Z, Rutkiewicz J, Stasiewicz J, Górski J. Adenosine deaminase activity in the human gastric mucosa in relation to acid secretion. Digestion 1990; 45: 172-175.
  • 6. Chaney AL, Marbach ED. Modified reagents for determination of urea and ammonia. Clin Chem 1962; 8: 130-132.
  • 7. Lowry OH, Rosebrough NJ, Farr AL, Randall RJ. Protein measurement with the Folin phenol reagent. J Biol Chem 1951; 193: 265-275.
  • 8. Vetvik K, Schrumpf E, Andersen KJ, Borkje B, Skagen DW, Halvorsen OJ. Enzyme activities in the duodenal mucosa in duodenal ulcer patients. Scand J Gastroenterol 1989; 24: 244-250.
  • 9. Henriksen FW, Gammeltoft M, Rune SJ. Effect of gastric hypersecretion on the canine duodenum. Scand J Gastroenterol 1976; 11: 609-614.
  • 10. Stiel D, Murray DJ, Peters TJ. Mucosal enzyme activities, with special reference to enzyme implicated in bicarbonate secretion, in the duodenum of rats with cysteamine induced ulcers. Clin Sci 1983; 64: 341-347.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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