کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1989967 | 1540669 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polyphenol-rich black chokeberry (Aronia melanocarpa) extract regulates the expression of genes critical for intestinal cholesterol flux in Caco-2 cells
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کلمات کلیدی
sirtuinCPT-1αacyl-CoA oxidase 1ABCG5/8SREBPSCD-1scavenger receptor class B, type ISR-BISCAPSIRTPPARαABCA1LDLRFASHMGR3-hydroxy-3-methylglutaryl coenzyme A reductase - 3-هیدروکسی-3-متیل گلوتاریل کوآنزیم A ردوکتازATP binding cassette transporter A1 - ATP اتصال دهنده کاست A1ROS - ROSStearoyl-CoA desaturase 1 - استارویل-کاپا دساتوراز 1fatty acid synthase - اسید چرب سنتازcardiovascular disease - بیماری قلب و عروقیTICE - خوبCVD - رسوب دهی شیمیایی بخار sterol regulatory element binding protein - پروتئین اتصال دهنده عصاره استرولsrebp cleavage-activating protein - پروتئین فعال کننده پروتئین Srebpcarnitine palmitoyltransferase 1α - کارنتین پالمیتیل ترانسفراز 1αReactive oxygen species - گونههای فعال اکسیژنLDL receptor - گیرنده LDLPeroxisome proliferator activated receptor α - گیرنده پروتئینزای پروکسیوم فعال α
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Black chokeberry (Aronia melanocarpa) is a rich source of polyphenols. The hypolipidemic effects of polyphenol-rich black chokeberry extract (CBE) have been reported, but underlying mechanisms have not been well characterized. We investigated the effect of CBE on the expression of genes involved in intestinal lipid metabolism. Caco-2 cells were incubated with 50 or 100 μg/ml of CBE for 24 h for quantitative realtime polymerase chain reaction analysis. Expression of genes for cholesterol synthesis (3-hydroxy-3-methylglutaryl coenzyme A reductase and sterol regulatory element binding protein 2), apical cholesterol uptake (Niemann-Pick C1 Like 1 and scavenger receptor class B Type 1) and basolateral cholesterol efflux [ATP-binding cassette transporter A1 (ABCA1)] was significantly decreased by CBE compared with control. Western blot analysis confirmed that CBE inhibited expression of these proteins. In contrast, CBE markedly induced mRNA and/or protein levels of ABCG5 and ABCG8 that mediate apical cholesterol efflux to the intestinal lumen. Furthermore, CBE significantly increased mRNA and protein levels of low-density lipoprotein (LDL) receptor, and cellular LDL uptake. Expression of genes involved in lipid metabolism and lipoprotein assembly, including sterol regulatory element-binding protein 1c, fatty acid synthase and acyl-CoA oxidase 1, was significantly decreased by CBE in a dose-dependent manner. Concomitantly, CBE significantly increased sirtuin 1, 3 and 5 mRNA levels, while it decreased SIRT-2. Our data suggest that hypolipidemic effects of CBE may be attributed, at least in part, to increased apical efflux of LDL-derived cholesterol and to decreased chylomicron formation in the intestine; and specific isoforms of SIRT may play an important role in this process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Nutritional Biochemistry - Volume 24, Issue 9, September 2013, Pages 1564-1570
Journal: The Journal of Nutritional Biochemistry - Volume 24, Issue 9, September 2013, Pages 1564-1570
نویسندگان
Bohkyung Kim, Youngki Park, Casey J. Wegner, Bradley W. Bolling, Jiyoung Lee,