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Gastrointestinal Tissue

  • John M. Johnston
Part of the Monographs in Lipid Research book series (MLR)

Abstract

The intestinal absorption of lipids in mammals has been the subject of investigation for longer periods than any other area of lipid metabolism. The controversy which centeied around the various theories of absorption has been the subject of intense debate (Johnston, 1969). In the late 19th century two investigators, Munk (1900) and Pfluger (1900), set the stage for the two conflicting theories of fat absorption. These were referred to as the particulate and lipolytic theories. The center of controversy was focused on the nature of the chemical moiety which penetrates the intestinal mucosal cell. It has been recognized for many years that the major dietary lipid is triacylglycerol. Munk’s hypothesis suggested that a limited hydrolysis of ingested triacylglycerols occurred and the product absorbed was primarily triacylglycerol in the form of fine emulsified particles. In contrast, Pfluger subscribed to the theory that ingested triacylglycerols must be completely hydrolyzed to glycerol and the respective fatty acids before their absorption. Pfluger’s strong influence dominated the concepts for the mechanism of fat absorption starting at the beginning of the century. These concepts were further supported by the investigations of Verzár and McDougall (1936), who suggested that the formation of a fatty-acid-bile-salt complex was an important process associated with the absorptive process.

Keywords

Bile Salt Intestinal Mucosa Mixed Micelle Pancreatic Lipase Mucosal Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1977

Authors and Affiliations

  • John M. Johnston
    • 1
  1. 1.Department of BiochemistryThe University of Texas Health Science Center at DallasDallasUSA

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