Summary
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1.
In anaesthetized gastric fistula cats gastric acid secretion and the following blood gases and acid base parameters were determined in the arterial blood and in the gastric venous drainage: pH, HCO −3 concentration, pCO2 and pO2.
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2.
During pentagastrin-stimulated gastric acid secretion HCO −3 concentration and pH rose in the gastric venous effluent and to a small extent in the arterial blood. The venous pO2 dropped.
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3.
During histamine-stimulated gastric acid secretion, in addition to the changes occurring during pentagastrin-stimulation, an initial drop in arterial pO2, HCO −3 concentration and pH was observed.
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4.
After pretreatment of the animals with phenoxybenzamine or mepyramine the effects of histamine in the arterial blood were abolished suggesting that a histamine-mediated release of catecholamines is responsible for these effects of histamine.
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5.
Inhibition of carbonic anhydrase by acetazolamide inhibited gastric acid secretion and produced a rise in pCO2 with a concomitant drop in pH.
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Albinus, M., Sewing, K.F. Acid base balance in relation to gastric acid secretion stimulated by histamine and pentagastrin in cats. Naunyn-Schmiedeberg's Arch. Pharmacol. 285, 325–335 (1974). https://doi.org/10.1007/BF00501462
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DOI: https://doi.org/10.1007/BF00501462