Effect of eicosapentaenoic acid (EPA) on tight junction permeability in intestinal monolayer cells

被引:66
|
作者
Usami, M [1 ]
Muraki, K [1 ]
Iwamoto, M [1 ]
Ohata, A [1 ]
Matsushita, E [1 ]
Miki, A [1 ]
机构
[1] Kobe Univ, Sch Med, Fac Hlth Sci, Suma Ku, Kobe, Hyogo 6540142, Japan
关键词
tight junction permeability; Caco-2; cell; eicosapentanoic acid; polyunsaturated fatty acids; indomethaein; AA861; fluorescein sulfonic acid;
D O I
10.1054/clnu.2001.0430
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
The purpose of this study is to evaluate the effect of C18 and C20 long chain fatty acids on tight junction permeability in a model of intestinal epithelium. Methods: Confluent Caco-2 cells on porous filters with double chamber system were used to measure fluorescein sulfonic acid (FS) permeability and transepithelial electrical resistance (TEER). Lactate dehydrogenase release and ultrastructure were evaluated. Effect of 200 muM eicosapentaenoic acid (EPA, C20:5 n-3), arachidonic acid (AA, C20:4 n-6), alpha -linoleic acid (ALA, C18:3 n-3), linoleic acid (LA, C18:2 n-6), or oleic acid (OA, C18: 1 n-9) enrichment in the culture medium during 24 hours were compared. The effect of the cyclooxygenase inhibitor, indomethacin, lipoxygenase inhibitors, NDGA or AA861, and antioxidant, BHT, was evaluated as a mechanism to change tight junction permeability. Results: Caco-2 cells formed polarized columner epithelial cells with densely packed microvilli and well developed junctional complexes. Addition of EPA enhanced FS permeability to 3.0 +/- 1.6-fold and lowered TEER to 0.59 +/- 1.2-fold vs. control with concentration dependency without cell injury (P< 0.01-0.05). OA, AA or LA did not change, but ALA enhanced tight junction permeability. Indomethacin and AA861 normalized the changes mediated by EPA. Conclusions., EPA affects tight junction permeability in intestinal monolayer cells specifically and concentration dependently via cyclooxygenase and lipoxygenase products. (C) 2001 Harcourt Publishers Ltd.
引用
收藏
页码:351 / 359
页数:9
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