Browning J, O'Brien P, Gannon BJ. Low forestomach acidity in the rat and the role of the gastric bolus.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A, COMPARATIVE PHYSIOLOGY 1984;
78:63-5. [PMID:
6146438 DOI:
10.1016/0300-9629(84)90093-8]
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Abstract
pH measurements were recorded from the mucosal surfaces of the rat forestomach and glandular stomach following stimulation of acid-secretion by pentagastrin. Animals containing a normal gastric bolus showed lower forestomach acidity (pH 4.3, cf. 3.2) as did coprophagic animals that contained a fecal gastric bolus (pH 6.0, cf. 3.6). Animals without a gastric bolus showed higher forestomach acidity (pH 2.3, cf. 3.0). It is concluded that the presence of a food bolus is prerequisite to maintenance of lower forestomach acidity in rats.
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