Experimental Physiology
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Quarterly Journal of Experimental Physiology 73.6 pp 1021-1023
© The Physiological Society 1988
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SODIUM DEPENDENCE OF AMINO ACID-STIMULATED ACID SECRETION IN THE CONSCIOUS RAT

V. Martin 1 and R. Dimaline 1

1 MRC Secretory Control Research Group, Physiological Laboratory, University of Liverpool, Liverpool L69 3BX

Gastric acid secretion in conscious gastric-fistulated rats was measured by non-recirculating constant gastric perfusion, and extragastric autotitration. Luminal L-amino acids stimulated acid secretion with a potency histidine rang alanine rang tryptophan. The response to histidine was concentration dependent, and was inhibited by low pH and by low luminal sodium. These results are consistent with the idea that a sodium-dependent uptake mechanism might, in part, mediate the acid secretory response to intragastric amino acids.

Submitted on August 23, 1988
Accepted on September 1, 1988






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