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Inhibition of lymphocyte capping by fatty acids in mouse and man

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Lipids

Abstract

Lipid-enriched diets have been related to a high cancer incidence in experimental animals for many years, and more recently, to assorted defects on the immune response. We investigated the effect of incubating human or murine (C3H/HEJ) lymphocytes with saturated (16∶0) and unsaturated (18∶1, 18∶2, 18∶3, 20∶4) fatty acids (12 μg for each 107 cells), on the ability to cap with andhuman or anti-mouse anti-IgM, μ-chain specific antibody. Capping was also tested in obese (ob/ob, C57BL/6J) mice. Capping at 30 and 60 min was reduced by fatty acid incubation to 10–30% of control values in humans (p<.001), and to 30% of control values in mice (p<.01), regardless of degree of unsaturation. ob/ob capped normally. A lymphocyte membrane effect caused by fatty acids is observed in these experiments. Whether this is related to the dysimmunity caused by lipid diets cannot be assessed from our data, especially since all fatty acids, regardless of unsaturation, reduced the capping phenomenon.

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Author information

Authors and Affiliations

  1. Surgical Service, San Juan VA Hospital, 00936, San Juan, Puerto Rico

    Eduardo A. Santiago-Delpín

  2. Department of Pathology, University of Puerto Rico, 00936, San Juan, Puerto Rico

    Angel A. Román-Franco & Julio I. Colón

Authors
  1. Eduardo A. Santiago-Delpín
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  2. Angel A. Román-Franco
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  3. Julio I. Colón
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Additional information

Experiments carried out at Immunology Laboratory, Department of Pathology, University of Puerto Rico Medical School, San Juan, Puerto Rico.

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Santiago-Delpín, E.A., Román-Franco, A.A. & Colón, J.I. Inhibition of lymphocyte capping by fatty acids in mouse and man. Lipids 17, 727–732 (1982). https://doi.org/10.1007/BF02534659

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  • DOI: https://doi.org/10.1007/BF02534659

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