The effect of omega- ۳ polyunsaturated fatty acids on endothelial tight junction occludin expression in rat aorta during lipopolysaccharide-induced inflammation
محل انتشار: مجله علوم پایه پزشکی ایران، دوره: 19، شماره: 3
سال انتشار: 1395
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 140
فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IJBMS-19-3_009
تاریخ نمایه سازی: 30 مهر 1400
چکیده مقاله:
Objective(s): Occludin is essential for proper assembly of tight junctions (TJs) which regulate paracellular endothelial permeability. Omega-۳ polyunsaturated fatty acids (Ω-۳ PUFA) protect endothelial barrier function against injury. Materials and Methods: We examined anti-inflammatory effect of Ω-۳ PUFA intake (۳۰ mg/kg/day for ۱۰ days) on expression and location of occludin in the aorta of adult Wistar rats after a single dose of bacterial lipopolysaccharide (LPS, Escherichia coli, ۱ mg/kg). The ultrastructure of TJs after LPS administration was also investigated. We measured plasma levels of C-reactive protein (CRP), Malondialdehyde (MDA) and CD۶۸ 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, CD۶۸ and NOS activity were elevated after LPS injection compared to controls indicating presence of moderate inflammation. Ω-۳ PUFA supplementation did not affect occludin expression in treated inflammatory group. However they reduced CRP and MDA concentration and CD۶۸ 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. ۱۰-day administration of Ω-۳ PUFA had partial anti-inflammatory effects on health of rats without any effect on occludin expression.
کلیدواژه ها:
نویسندگان
Jakub Krizak
Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovakia
Karel Frimmel
Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovakia
Iveta Bernatova
Institute of Normal and Pathological Physiology, Slovak Academy of Sciences, Bratislava, Slovakia
Jana Navarova
Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovakia
Ruzena Sotnikova
Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovakia
Ludmila Okruhlicova
Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovakia
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :