PMID: 6172840Jan 1, 1981Paper

Passage of molecules through the wall of the gastrointestinal tract. Increased passive permeability in rat ileum after exposure to lysolecithin

Scandinavian Journal of Gastroenterology
T BolinC Tagesson

Abstract

The interaction between lysolecithin and mucosal cells in the distal ileum has been studied. Using a rat experimental model, we determined the intestinal permeability to fluorescent dextran 3000 after exposure to different amounts of lysolecithin. At pH 7.3, lysolecithin, 10 mg/ml, significantly enhanced the transmural passage, and at pH 3.5, even 1 mg/ml markedly increased the permeability. However, when lysolecithin was incubated with homogenized mucosal cells, a rapid disappearance of the compound occurred; this was accompanied by formation of free fatty acids and minor formation of lecithin. It appears, therefore, that high concentrations of lysolecithin can impair the intestinal barrier function in the distal part of ileum but that the mucosal cells are well equipped with activities for the rapid removal of such high concentrations. This could be physiologically significant, since the mucosal cells could otherwise be faced with large amounts of lysolecithin that might facilitate the absorption of potentially antigenic and toxic compounds.

References

Jan 1, 1978·Scandinavian Journal of Gastroenterology·C TagessonB Thorén
Mar 25, 1975·Biochimica Et Biophysica Acta·A Helenius, K Simons
Nov 1, 1975·Pediatric Clinics of North America·W A Walker
Nov 1, 1972·Proceedings of the Society for Experimental Biology and Medicine·M Gibaldi, B Grundhofer
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Jan 1, 1960·International Review of Cytology·L WEISS

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Citations

Sep 1, 1986·Veterinary Research Communications·L Ooms, A Degryse
Jan 1, 1984·Drug Metabolism Reviews·Z H Israili, P G Dayton
Feb 1, 1989·International Journal of Pancreatology : Official Journal of the International Association of Pancreatology·C SvenssonI Ihse

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