The effect of omega- 3 polyunsaturated fatty acids on endothelial tight junction occludin expression in rat aorta during lipopolysaccharide-induced inflammation | ||
| Iranian Journal of Basic Medical Sciences | ||
| مقاله 10، دوره 19، شماره 3، خرداد 2016، صفحه 290-299 اصل مقاله (1.06 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22038/ijbms.2016.6648 | ||
| نویسندگان | ||
| Jakub Krizak1؛ Karel Frimmel1؛ Iveta Bernatova2؛ Jana Navarova3؛ Ruzena Sotnikova3؛ Ludmila Okruhlicova* 1 | ||
| 1Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovakia | ||
| 2Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Bratislava, Slovakia | ||
| 3Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovakia | ||
| چکیده | ||
| Objective(s): Occludin is essential for proper assembly of tight junctions (TJs) which regulate paracellular endothelial permeability. Omega-3 polyunsaturated fatty acids (Ω-3 PUFA) protect endothelial barrier function against injury. Materials and Methods: We examined anti-inflammatory effect of Ω-3 PUFA intake (30 mg/kg/day for 10 days) on expression and location of occludin in the aorta of adult Wistar rats after a single dose of bacterial lipopolysaccharide (LPS, Escherichia coli, 1 mg/kg). The ultrastructure of TJs after LPS administration was also investigated. We measured plasma levels of C-reactive protein (CRP), Malondialdehyde (MDA) and CD68 expression and determined the total activity of NO synthase (NOS) in the aortic tissue. Results:LPS induced a significant decrease of occludin expression accompanied by structural alterations of TJs. Levels of CRP, MDA, CD68 and NOS activity were elevated after LPS injection compared to controls indicating presence of moderate inflammation. Ω-3 PUFA supplementation did not affect occludin expression in treated inflammatory group. However they reduced CRP and MDA concentration and CD68 expression, but conversely, they increased NOS activity compared to inflammatory group. Conclusion:Our results indicate that a single dose of LPS could have a long-term impact on occludin expression and thus contribute to endothelial barrier dysfunction. 10-day administration of Ω-3 PUFA had partial anti-inflammatory effects on health of rats without any effect on occludin expression. | ||
| کلیدواژهها | ||
| aorta؛ Endothelium؛ Lipopolysaccharide؛ Occludin؛ Omega-3 polyunsaturated fatty acids | ||
| مراجع | ||
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