Evidence That Body Irritations or Emotions Retard Gastric Evacuation, Not by Producing Pylorospasm but by Depressing Gastric Motility 1

Quigley, James P.; Bavor, H. J.; Read, Matt R.; Brofman, Bernard L.

doi:10.1172/jci101457

Cited by 12 publications

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“…The assumption is, therefore, that the residual motility of the denervated abomasum was insufficient to raise the intraabomasal pressure to produce normal emptying; the effect on the animal depended on the degree of impairment of emptying. This thesis is supported by the finding of Quigley, Bavor, Read & Brofman (1943) that the delay in gastric emptying, produced in dogs by emotional stress, and previously ascribed to pylorospasm, is in fact due rather to a decrease in propulsive motility of the pyloric antrum, and occurs in spite of a concomitant sphincter relaxation.…”

Section: Discussionsupporting

confidence: 58%

The effects of vagotomy and splanchnotomy on gastric motility in the sheep

Duncan¹

1953

The Journal of Physiology

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Each of the four divisions of the ruminant stomach has its characteristic types of movement, as described by Wester (1926), Czepa & Stigler (1926, 1929, Mangold & Klein (1927), Schalk & Amadon (1928), and Phillipson (1939). Closely related to reticulo-ruminal motility is the phenomenon of rumination, shown by Stigler (1931, 1933, 1949) to be carried out by coordinated activity of the stomach and oesophagus with the respiratory apparatus. The existence of a nervous co-ordinating mechanism for gastric movements in the ruminant has been suggested by experiments of Ellenberger (1883), Wester (1926), Mangold & Klein (1927), Lagerlof & Hoflund (1936) and Hoflund (1940). The evidence, however, was incomplete; Mangold & Klein relied upon observations on laparotomized, anaesthetized animals, and on post-mortem findings after chronic neurectomies, while Hofilund based his observations on the auscultation of ruminal sounds and on post-mortem examination following section of various combinations of branches of the abdominal vagi.A detailed study has been made of the effects on reticulo-ruminal and abomasal motility of total and partial vagotomy and of splanchnotomy, and the results are described in this paper. METHODSThe work was carried out on lambs and adult sheep, mainly Scottish Blackfaces, with a few Cheviots and cross-breds; only two experiments were performed on calves, since they proved to be less suitable subjects. In order to avoid complications from initial ruminal paresis, about half the experiments were carried out on suckling lambs. They were received at 1-4 days of age, and were bottle-fed with a mixture of cows' milk with added casein and sodium citrate. Gastric motility was studied radiographically after the addition of barium sulphate to the milk mixture.

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