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The physiology of membrane digestion. Report 4. Intravascular hydrolysis of starch in the frog

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Summary

Hydrolysis of soluble starch was studied in the frog: a) during perfusion of the vascular system with starch-sucrose-salt solution and b) under the effect of amylase transported from tissues into the perfusate. A comparative analysis of the rate of hydrolysis in vivo and in vitro showed that amylase in the perfusate was responsible but little for hydrolysis in the vessels. Similar results were obtained in the experiments with the digestive system excluded from perfusion. It may be assumed that an intensive hydrolysis in the vessels may be due to the presence of enzymes fixed on the surface of endothelial cells.

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Literature Cited

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Authors and Affiliations

  1. Laboratory of General Physiology, I. P. Pavlov Institute of Physiology of the AN SSSR, Leningrad

    A. M. Ugolev & V. V. Chernousova

Authors
  1. A. M. Ugolev
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  2. V. V. Chernousova
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Ugolev, A.M., Chernousova, V.V. The physiology of membrane digestion. Report 4. Intravascular hydrolysis of starch in the frog. Bull Exp Biol Med 55, 497–499 (1964). https://doi.org/10.1007/BF00784400

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  • DOI: https://doi.org/10.1007/BF00784400

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