The effect of phospholipid composition of reconstituted HDL on its cholesterol efflux and anti-inflammatory properties.

نویسندگان

  • Anna Schwendeman
  • Denis O Sviridov
  • Wenmin Yuan
  • Yanhong Guo
  • Emily E Morin
  • Yue Yuan
  • John Stonik
  • Lita Freeman
  • Alice Ossoli
  • Seth Thacker
  • Salena Killion
  • Milton Pryor
  • Y Eugene Chen
  • Scott Turner
  • Alan T Remaley
چکیده

The goal of this study was to understand how the reconstituted HDL (rHDL) phospholipid (PL) composition affects its cholesterol efflux and anti-inflammatory properties. An ApoA-I mimetic peptide, 5A, was combined with either SM or POPC. Both lipid formulations exhibited similar in vitro cholesterol efflux by ABCA1, but 5A-SM exhibited higher ABCG1- and SR-BI-mediated efflux relative to 5A-POPC (P < 0.05). Injection of both rHDLs in rats resulted in mobilization of plasma cholesterol, although the relative potency was 3-fold higher for the same doses of 5A-SM than for 5A-POPC. Formation of preβ HDL was observed following incubation of rHDLs with both human and rat plasma in vitro, with 5A-SM inducing a higher extent of preβ formation relative to 5A-POPC. Both rHDLs exhibited anti-inflammatory properties, but 5A-SM showed higher inhibition of TNF-α, IL-6, and IL-1β release than did 5A-POPC (P < 0.05). Both 5A-SM and 5A-POPC showed reduction in total plaque area in ApoE(-/-) mice, but only 5A-SM showed a statistically significant reduction over placebo control and baseline (P < 0.01). The type of PL used to reconstitute peptide has significant influence on rHDL's anti-inflammatory and anti-atherosclerosis properties.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Characterization of phospholipids in pre- a HDL: selective phospholipid efflux with apolipoprotein A-I

Previously, we have shown that lipid-free apoA-I, when incubated with fibroblasts, will produce lipoproteins of prea mobility (Asztalos, B. F., et al. 1997. Arterioscler. Thromb. Vasc. Biol. 17: 1630–1636). In order to understand the nature of these prea particles, we further characterized their lipid content. The prea particles are high density lipoproteins, having a median density of 1.08 g/m...

متن کامل

Reconstituted high-density lipoprotein increases plasma high-density lipoprotein anti-inflammatory properties and cholesterol efflux capacity in patients with type 2 diabetes.

OBJECTIVES Our aim was to investigate the effects of reconstituted high-density lipoprotein (rHDL) infusions on plasma high-density lipoprotein (HDL) anti-inflammatory properties and ex vivo cholesterol efflux in patients with type 2 diabetes. BACKGROUND The anti-inflammatory effects of HDL contribute to protection from cardiovascular events. Individuals with type 2 diabetes are at elevated r...

متن کامل

Dietary modification of high density lipoprotein phospholipid and influence on cellular cholesterol efflux.

African green monkeys fed fat-specific diets served as a model to investigate the effect of phospholipid acyl chain modification on high density lipoprotein (HDL)-mediated cellular cholesterol efflux. Diets enriched in saturated, monounsaturated, n-6 polyunsaturated, or n-3 polyunsaturated fats were provided during both low cholesterol and cholesterol-enriched stages; sera and HDL3 samples were...

متن کامل

Effects of acceptor composition and mechanism of ABCG1-mediated cellular free cholesterol efflux*

Among the known mechanisms of reverse cholesterol transport (RCT), ATP binding cassette transporter G1 (ABCG1)-mediated free cholesterol (FC) transport is the most recent and least studied. Here, we have characterized the efficiencies of different acceptors using baby hamster kidney (BHK) cells transfected with human ABCG1 cDNA, which is inducible upon treatment with mifepristone. When normaliz...

متن کامل

High-density lipoprotein (HDL) from elderly and reconstituted HDL containing glycated apolipoproteins A-I share proatherosclerotic and prosenescent properties with increased cholesterol influx.

High-density lipoprotein (HDL) is a strong antioxidant, anti-inflammatory, and antisenescence molecule. However, in the current study, HDL from the elderly group (E-HDL) exhibited increased glycation with apolipoprotein (apo) A-I multimerization and decreased phospholipid content. Similarly, glycated apoA-I (gA-I) by fructosylation has a covalently multimerized band without a crosslinker and im...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of lipid research

دوره 56 9  شماره 

صفحات  -

تاریخ انتشار 2015