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Research Article Free access | 10.1172/JCI114306

Intestinal surfactant-like material. A novel secretory product of the rat enterocyte.

K DeSchryver-Kecskemeti, R Eliakim, S Carroll, W F Stenson, M A Moxley, and D H Alpers

Department of Pathology, Washington University Medical School, St. Louis, Missouri 63110.

Find articles by DeSchryver-Kecskemeti, K. in: PubMed | Google Scholar

Department of Pathology, Washington University Medical School, St. Louis, Missouri 63110.

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Department of Pathology, Washington University Medical School, St. Louis, Missouri 63110.

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Department of Pathology, Washington University Medical School, St. Louis, Missouri 63110.

Find articles by Stenson, W. in: PubMed | Google Scholar

Department of Pathology, Washington University Medical School, St. Louis, Missouri 63110.

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Department of Pathology, Washington University Medical School, St. Louis, Missouri 63110.

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Published October 1, 1989 - More info

Published in Volume 84, Issue 4 on October 1, 1989
J Clin Invest. 1989;84(4):1355–1361. https://doi.org/10.1172/JCI114306.
© 1989 The American Society for Clinical Investigation
Published October 1, 1989 - Version history
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Abstract

Surface-active phospholipid-containing particles are traditionally considered to be the product of type II pneumocytes. We now demonstrate membrane-bound lamellar cytoplasmic organelles in adult and suckling rat enterocytes that are densely reactive with phospholipid-staining reagents. These structures were seen in the basolateral space, within the intercellular junctions, and unraveling on the lumenal surface, and were more abundant after fat feeding. Light scrapings of intestinal mucosa and lumenal washings that contained these bodies, as evidenced by morphology and biochemical analysis, lowered surface tension in a pulsating bubble assay. Production by normal enterocytes of material with surfactant-like appearance and properties demonstrates that these structures are present in extrapulmonary epithelia, and extends the possible range of their function beyond gaseous exchange, e.g., solute exchange or lubrication on membrane surfaces.

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