Summary
The level of cyclic AMP in the jejunal mucosa from tied loops of anaesthetized rats was found to be significantly increased (27–50%) when sodium lauryl sulphate (SLS) was added to the loop fluid (2–27 mM). Imidazole (25 mM) did not significantly alter the resting level of cyclic AMP, but reduced the increase caused by SLS (17 mM). Theophylline (25 mM) significantly increased the intestinal level of cyclic AMP, and potentiated the increase caused by SLS. Ouabain (2.5 mM) did not alter the level of cyclic AMP in the presence or in the absence of SLS.
The results of previous experiments on the increases in intestinal absorption caused by SLS or by dibutyryl cyclic AMP (Briseid et al., 1974, 1976) are discussed in light of the present data. It is concluded that the SLS-effect on absorption can only partly by ascribed to its effect on the intestinal level of cyclic AMP.
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Briseid, G., Øye, I. & Briseid, K. Increased level of cAMP in the rat intestinal musosa caused by sodium lauryl sulphate. Naunyn-Schmiedeberg's Arch. Pharmacol. 298, 263–266 (1977). https://doi.org/10.1007/BF00500898
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DOI: https://doi.org/10.1007/BF00500898