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Apolipoprotein A1

Mads Rosenkilde, Lisbeth Rygaard, Pernille Nordby, Lars Bo Nielsen, Bente Stallknecht
Exercise training and weight loss both reduce cardiovascular risk, but the independent importance of the two strategies is unclear. We aimed to investigate independent and combined effects of exercise training and weight loss on lipoproteins and dyslipidemia in overweight sedentary men. Sixty individuals were randomized to 12 weeks of endurance training (T), energy-reduced diet (D), training and energy increased diet (T-iD), or control (C). Equal energetic deficits (-600 kcal/day) were prescribed by exercise for T and caloric restriction for D...
March 15, 2018: Journal of Applied Physiology
Barbara S Wiggins, Jeffrey Senfield, Helina Kassahun, Armando Lira, Ransi Somaratne
PURPOSE OF REVIEW: To review the efficacy, safety, pharmacology, and pharmacokinetics of evolocumab, a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor. RECENT FINDINGS: PCSK9 inhibitors are a class of lipid-lowering agents that significantly reduce low-density lipoprotein cholesterol (LDL-C) levels in patients with atherosclerotic cardiovascular disease and hyperlipidemia. Evolocumab is a monoclonal antibody that inhibits PCSK9 and has been evaluated in phase II and III studies as monotherapy, in combination with statins and other lipid-lowering therapies, in patients who are statin intolerant, and in patients with heterozygous and homozygous familial hypercholesterolemia...
March 6, 2018: Current Atherosclerosis Reports
Hui Liang, Yutong Wang
Abnormal lipid metabolism may contribute to the pathogenesis of non-alcoholic steatohepatitis (NASH). The ATP-binding cassette transporter A1 (ABCA1) protein mediates the transport of cholesterol and phospholipids from cells to apolipoprotein A-I (apoA-I) to generate nascent HDL particles. Previous studies revealed that the overexpression of ABCA1 alleviated hepatic lipid levels by modifying lipid transport. Here, we examined the effect of berberine (BBR) on ABCA1 in QSG-7701 hepatocytes and in mice. BBR decreased hepatic cholesterol and triglyceride levels...
March 2, 2018: Biochemical and Biophysical Research Communications
Janka Franeková, Antonín Jabor
Authors describe state-of-the-art in the routine laboratory diagnostics of cardiovascular risk with special emphasis on metrology, traceability, external quality assessment, biological variation, and reference change value. While analytical quality of total cholesterol, triglycerides, glucose, and HbA1c is satisfactory, improvements are needed for HDL-cholesterol, LDL-cholesterol, apolipoprotein A1, apolipoprotein B, Lp(a), and LpPLA2 measurements. Biological variation is a strong player in the lipid diagnostics, because reference change value is above 20 % for majority of biomarkers...
2018: Vnitr̆ní Lékar̆ství
Susanne Dogan, Michael Paulus, Yury Forov, Christopher Weis, Matthias Kampmann, Christopher Cewe, Irena Kiesel, Patrick Degen, Paul Salmen, Heinz Rehage, Metin Tolan
A x-ray reflectivity study on the adsorption behaviour of human apolipoprotein A1 (apoA1) at hydrophilic and hydrophobic interfaces is presented. It is shown, that the protein interacts via electrostatic and hydrophobic interactions with interfaces resulting in the absorption of the protein. pH dependent measurements at the solid/liquid-interface between silicon dioxide and aqueous protein solution show that in a small pH rage, between pH 4 and pH 6 adsorption is increased due to electrostatic attraction. Here the native shape of the protein seems to be conserved...
February 28, 2018: Journal of Physical Chemistry. B
K Yu, Y Xue, T He, L Guan, A Zhao, Y Zhang
OBJECTIVES: There has been recent interest in spicy foods and their bioactive ingredients for cardiovascular health. This study aims to explore relationship between spicy food consumption frequency and serum lipid profiles in a cross-sectional sample of older Chinese from China Health and Nutrition Survey (CHNS). METHODS: A total of 1549 participant aged 65 years and above from CHNS 2009 were included in the analysis. Information on spicy food consumption was obtained using a questionnaire survey and 24h dietary recalls over three consecutive days combined with weighted food inventory...
2018: Journal of Nutrition, Health & Aging
Kanako Kojima-Ishii, Naoko Toda, Kazuhiro Okubo, Vlad Tocan, Noriko Ohyama, Mika Makimura, Terumichi Matsuo, Masayuki Ochiai, Shouichi Ohga, Kenji Ihara
Children born small for gestational age (SGA) are at a higher risk for metabolic disorders later in life. In this study, we aimed to characterize young SGA children without catch-up growth and evaluate the effects of GH treatment on endocrinological, metabolic, and immunological parameters. Study design is a one-year single hospital-based study included prospective observation of SGA patients during 12 months of GH treatment. Clinical and laboratory profiles of SGA children at baseline were compared with controls born appropriate size for age...
February 20, 2018: Endocrine Journal
Pavla Flodrova, Patrik Flodr, Tomas Pika, Jiri Vymetal, Dusan Holub, Petr Dzubak, Marian Hajduch, Vlastimil Scudla
Amyloidosis is a heterogeneous group of diseases characterised by extracellular accumulation of amyloid in various tissues and organs of the body, leading to alteration and destruction of tissues. Heart involvement is the most important prognostic factor in patients with systemic amyloidosis and the diagnosis and typing of amyloid must be made properly. The clinical picture shows congestive heart failure with predominant right-sided heart failure symptoms in fully developed disease, various types of arrhythmias and characteristic electrocardiography and echocardiography findings...
February 12, 2018: Pathology
Mylène Da Silva, Clara Dombre, Aurélien Brionne, Philippe Monget, Magali Chessé, Marion De Pauw, Maryse Mills, Lucie Combes-Soia, Valérie Labas, Nicolas Guyot, Yves Nys, Sophie Rehault-Godbert
In many amniotes, the amniotic fluid is depicted as a dynamic milieu that participates in the protection of the embryo (cushioning, hydration, and immunity). However, in birds, the protein profile of the amniotic fluid remains unexplored, even though its proteomic signature is predicted to differ compared to human's. In fact, unlike humans, chicken amniotic fluid does not collect excretory products and its protein composition strikingly changes at mid-development due to the massive inflow of egg white proteins, which are thereafter swallowed by the embryo to support its growth...
February 14, 2018: Molecular & Cellular Proteomics: MCP
Ying Zhou, Yanqing Yu, Yaqin Chai, Ruo Yuan
Herein, a novel electrochemiluminescence resonance energy transfer (ERET) strategy between in situ electrogenerated silver nanoclusters (AgNCs) as the donor and Ru(bpy)2(5-NH2-1,10-phen)Cl2 (Ru(II)) as the acceptor was reported, which was applied for the construction of a ultrasensitive immunosensor for the determination of apolipoprotein-A1 (Apo-A1). Notably, the Ag NCs were in suit electro-reducted on glassy carbon electrode (GCE) based on a simple, fast and controllable electrochemical technique, which acted as not only biocompatible ECL emitters, but also protein immobilization platform via Ag-N or Ag-S bond...
May 1, 2018: Talanta
Lílian L Lopes, Daniela Mayumi U P Rocha, Alessandra da Silva, Maria do Carmo G Peluzio, Josefina Bressan, Helen Hermana M Hermsdorff
PURPOSE: We evaluated postprandial response of the lipid metabolism markers after the intake of a high-saturated fat (HSM) or high-monounsaturated fat meal (HMM). METHODS: A randomized, controlled and acute intervention study included 63 women (age 26.9 ± 6.1 years): 35 normal weight (NW) and 28 overweight (OW) (total body fat [TBF] 24.7 ± 3.9% and 36.6 ± 3.9%, respectively). After 12 hours of fasting, each subject was given one of the two test meals standardized, including 2 muffins and water (HSM, 42...
February 9, 2018: Journal of the American College of Nutrition
Remina Shirai, Kengo Sato, Tomoyuki Yamashita, Maho Yamaguchi, Taisuke Okano, Kaho Watanabe-Kominato, Rena Watanabe, Taka-Aki Matsuyama, Hatsue Ishibashi-Ueda, Shinji Koba, Youichi Kobayashi, Tsutomu Hirano, Takuya Watanabe
BACKGROUND: Neopterin, a metabolite of GTP, is produced by activated macrophages and is abundantly expressed within atherosclerotic lesions in human aorta and carotid and coronary arteries. We aimed to clarify the influence of neopterin on both vascular inflammation and atherosclerosis, as neither effect had been fully assessed. METHODS AND RESULTS: We investigated neopterin expression in coronary artery lesions and plasma from patients with coronary artery disease...
February 2, 2018: Journal of the American Heart Association
Tymon Pol, Claes Held, Johan Westerbergh, Johan Lindbäck, John H Alexander, Marco Alings, Cetin Erol, Shinya Goto, Sigrun Halvorsen, Kurt Huber, Michael Hanna, Renato D Lopes, Witold Ruzyllo, Christopher B Granger, Ziad Hijazi
BACKGROUND: Dyslipidemia is a major risk factor for cardiovascular events. The prognostic importance of lipoproteins in patients with atrial fibrillation is not well understood. We aimed to explore the association between apolipoprotein A1 (ApoA1) and B (ApoB) and cardiovascular events in patients with atrial fibrillation receiving oral anticoagulation. METHODS AND RESULTS: Using data from the ARISTOTLE (Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation) trial, ApoA1 and ApoB plasma levels were measured at baseline in 14 884 atrial fibrillation patients...
February 1, 2018: Journal of the American Heart Association
Sonia Sanz Muñoz, Hongyun Li, Kalani Ruberu, Qian Chu, Alan Saghatelian, Lezanne Ooi, Brett Garner
Apolipoprotein-E (apoE) is a glycoprotein highly expressed in the brain, where it appears to play a role in lipid transport, β-amyloid clearance, and neuronal signaling. ApoE proteolytic fragments are also present in the brain, but the enzymes responsible for apoE fragmentation are unknown, and the biological activity of specific apoE fragments remains to be determined. Here we utilised SK-N-SH neuroblastoma cells differentiated into neurons with all-trans retinoic acid (ATRA) to study extracellular apoE proteolysis...
February 2, 2018: Journal of Biological Chemistry
Yui Takahashi, Rena Watanabe, Yuki Sato, Nana Ozawa, Miho Kojima, Kaho Watanabe-Kominato, Remina Shirai, Kengo Sato, Tsutomu Hirano, Takuya Watanabe
INTRODUCTION: The novel phytohormone, osmotin, has been reported to act like mammalian adiponectin through PHO36/AdipoR1 in various in vitro and in vivo models. However, there have been no reports regarding the precise effects of osmotin on atherosclerosis. METHODS: We assessed the atheroprotective effects of osmotin on inflammatory molecules in human umbilical vein endothelial cells (HUVECs), human leukemic monocyte (THP-1) adhesion, inflammatory responses, and foam cell formation in THP-1-derived macrophages, and the migration, proliferation, and extracellular matrix expression in human aortic smooth muscle cells (HASMCs)...
February 1, 2018: Metabolism: Clinical and Experimental
Ting Xiong, Gang Xu, Xue-Long Huang, Kai-Qiang Lu, Wei-Quan Xie, Kai Yin, Jian Tu
ATP-binding cassette transporter A1 (ABCA1) has been found to mediate the transfer of cellular cholesterol across the plasma membrane to apolipoprotein A-I (apoA-I), and is essential for the synthesis of high-density lipoprotein. Mutations of the ABCA1 gene may induce Tangier disease and familial hypoalphalipoproteinemia; they may also lead to loss of cellular cholesterol homeostasis in prostate cancer, and increased intracellular cholesterol levels are frequently found in prostate cancer cells. Recent studies have demonstrated that ABCA1 may exert anticancer effects through cellular cholesterol efflux, which has been attracting increasing attention in association with prostate cancer...
January 2018: Molecular and Clinical Oncology
Zahra Hajmohammadi, Mojtaba Heydari, Majid Nimrouzi, Pouya Faridi, Mohammad Javad Zibaeenezhad, Gholamhossein Ranjbar Omrani, Mesbah Shams
BACKGROUND: Lipid-lowering effect of Rhus coriaria L. (Rhus) has been investigated in multiple animal studies with promising results. Nonetheless, its clinical efficacy has not been adequately examined. OBJECTIVE: The aim of this study was to evaluate the lipid-lowering effects of Rhus among patients with hyperlipidemia. DESIGN, SETTING, PARTICIPANTS AND INTERVENTIONS: The study was designed as a two-arm, double-blind placebo-controlled randomized clinical trial, using a parallel design...
January 2018: Journal of Integrative Medicine
Irina M Chernukha, Liliya V Fedulova, Elena A Kotenkova, Shiro Takeda, Ryoichi Sakata
The aim of this study was to investigate the effects of aorta and heart tissues obtained from cattle and pigs on atherosclerosis disorders. Atherosclerosis model rats were provided with the respective diets consisting of aorta and heart tissues. Administration of each tissue suppressed body weight gain as compared to that of the control. In particular, the aorta tissues of pigs and cattle demonstrated significant suppressions in body weight gain in the model rats. The aorta tissues of pigs and cattle showed a significant increase and decrease in the serum high-density lipoproteins and atherogenic index, respectively, which was correlated with the increase in apolipoprotein A1...
February 1, 2018: Animal Science Journal, Nihon Chikusan Gakkaihō
Michael J Haas, Monica Plazarte, Ayham Chamseddin, Luisa Onstead-Haas, Norman C W Wong, Gabriela Plazarte, Arshag D Mooradian
In a recent high throughput analysis to identify drugs that alter hepatic apolipoprotein A-I (apo A-I) expression, histamine receptor one (H1) antagonists emerged as potential apo A-1 inducing drugs. Thus the present study was undertaken to identify some of the underlying molecular mechanisms of the effect of antihistaminic drugs on apo AI production. Apo A-I levels were measured by enzyme immunoassay and Western blots. Apo A-I mRNA levels were measured by reverse transcription real-time PCR using glyceraldehyde-3-phosphate dehydrogenase (GAPDH) mRNA as the internal control...
January 25, 2018: European Journal of Pharmacology
Qing-Hui Zhang, Rui-Xing Yin, Feng Huang, De-Zhai Yang, Wei-Xiong Lin, Shang-Ling Pan
Jing nationality is a relatively conservative and isolated minority in China. Little is known about the association of the PIN2/TERF1-interacting telomerase inhibitor 1 (PINX1) and N-acetyltransferase 2 (NAT2) single nucleotide polymorphisms (SNPs) and serum lipid levels in the Chinese populations. This study aimed to clarify the association of 6 SNPs of the PINX1 and NAT2 and serum lipid levels in two Chinese populations. Genotyping of the SNPs was performed in 1236 Han subjects and 1248 Jing participants...
December 26, 2017: Oncotarget
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