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. 1958 Sep;13(3):321-5.
doi: 10.1111/j.1476-5381.1958.tb00911.x.

The effect of substance P on the peristaltic reflex of the isolated guinea-pig ileum

D BELESLIN, V VARAGIC

The effect of substance P on the peristaltic reflex of the isolated guinea-pig ileum

D BELESLIN et al. Br J Pharmacol Chemother. 1958 Sep.

Abstract

The introduction of substance P into the lumen of the isolated guinea-pig ileum caused an increase in the number and amplitude of the peristaltic waves. In preparations in which the peristaltic reflex was abolished, by fatigue, by external or internal application of 5-hydroxytryptamine, or by lowering the temperature of the bath, the introduction of substance P into the lumen of the intestine restored peristalsis. This effect of substance P was absent in preparations in which the mucous membrane was removed. Hexamethonium abolished the effect of substance P on peristalsis. It is concluded that substance P acts on the afferent nervous elements of the peristaltic reflex arc, possibly on the sensory receptors.

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References

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