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https://www.readbyqxmd.com/read/28542510/associations-among-apolipoproteins-oxidized-high-density-lipoprotein-and-cardiovascular-events-in-patients-on-hemodialysis
#1
Hirokazu Honda, Tsutomu Hirano, Masashi Ueda, Shiho Kojima, Shinichi Mashiba, Yasuyuki Hayase, Tetsuo Michihata, Kanji Shishido, Keiko Takahashi, Nozomu Hosaka, Misa Ikeda, Daisuke Sanada, Takanori Shibata
Apolipoproteins are associated with survival among patients on hemodialysis (HD), but these associations might be influenced by dysfunctional (oxidized) high-density lipoprotein (HDL). We assessed associations among apolipoproteins and oxidized HDL, mortality and cardiovascular disease (CVD) events in patients on HD. This prospective observational study examined 412 patients on prevalent HD. Blood samples were obtained before dialysis at baseline to measure lipids, apolipoproteins, oxidized LDL, oxidized HDL, high-sensitivity C-reactive protein (hs-CRP) and interleukin (IL)-6 at baseline, and HDL-C and hs-CRP were measured 12 months later...
2017: PloS One
https://www.readbyqxmd.com/read/28534160/micrornas-new-therapeutic-targets-for-familial-hypercholesterolemia
#2
REVIEW
Amir Abbas Momtazi, Maciej Banach, Matteo Pirro, Evan A Stein, Amirhossein Sahebkar
Familial hypercholesterolemia (FH) is the most common inherited form of dyslipidemia and a major cause of premature cardiovascular disease. Management of FH mainly relies on the efficiency of treatments that reduce plasma low-density lipoprotein (LDL) cholesterol (LDL-C) concentrations. MicroRNAs (miRs) have been suggested as emerging regulators of plasma LDL-C concentrations. Notably, there is evidence showing that miRs can regulate the post-transcriptional expression of genes involved in the pathogenesis of FH, including LDLR, APOB, PCSK9, and LDLRAP1...
May 22, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28527325/dyslipidemia-management-update
#3
REVIEW
Yingzi Chang, Jacques Robidoux
Association of hypercholesterolemia and atherosclerotic cardiovascular disease (ASCVD) is well established. Reducing low-density lipoprotein-cholesterol (LDL-C) and raising high-density lipoprotein-cholesterol (HDL-C) have been the therapeutic targets to reduce the risk of ASCVD. Cholesterol-lowering medications have been used to provide both primary and secondary prevention of ASCVD for many years by reducing the absorption and reabsorption, promoting excretion, or decreasing the synthesis of cholesterol. Within the past five years, several new classes of cholesterol-lowering drugs have been tested and approved for patients with hypercholesterolemia that are not well controlled by conventional therapy (ezetimibe, bile-acid sequestrants, and statins)...
May 17, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28521623/enzyme-linked-immunoassay-based-quantitative-measurement-of-apolipoprotein-b-apob-in-dried-blood-spots-a-biomarker-of-cardiovascular-disease-risk
#4
Geeta N Eick, Paul Kowal, Tyler Barrett, Elizabeth A Thiele, J Josh Snodgrass
Apolipoprotein B (ApoB) is a strong predictor of cardiovascular disease, which remains the leading cause of mortality in both higher and lower income countries. Here, we adapted an enzyme-linked immunosorbent assay (ELISA) development kit for quantitative determination of ApoB levels in serum and plasma for use with dried blood spots (DBS). After confirming the dilution linearity of the assay for DBS, we measured ApoB in 208 venous DBS samples. Then, using Passing-Bablok regression analysis and Spearman rank correlation analysis, we evaluated the correspondence in ApoB values between matched plasma and finger-prick DBS samples from 40 individuals who had ApoB values spanning the range of ApoB values observed in the 208 vDBS samples...
2017: Biodemography and Social Biology
https://www.readbyqxmd.com/read/28514664/lack-of-mttp-activity-in-pluripotent-stem-cell-derived-hepatocytes-and-cardiomyocytes-abolishes-apob-secretion-and-increases-cell-stress
#5
Ying Liu, Donna M Conlon, Xin Bi, Katherine J Slovik, Jianting Shi, Hailey I Edelstein, John S Millar, Ali Javaheri, Marina Cuchel, Evanthia E Pashos, Jahangir Iqbal, M Mahmood Hussain, Robert A Hegele, Wenli Yang, Stephen A Duncan, Daniel J Rader, Edward E Morrisey
Abetalipoproteinemia (ABL) is an inherited disorder of lipoprotein metabolism resulting from mutations in microsomal triglyceride transfer protein (MTTP). In addition to expression in the liver and intestine, MTTP is expressed in cardiomyocytes, and cardiomyopathy has been reported in several ABL cases. Using induced pluripotent stem cells (iPSCs) generated from an ABL patient homozygous for a missense mutation (MTTP(R46G)), we show that human hepatocytes and cardiomyocytes exhibit defects associated with ABL disease, including loss of apolipoprotein B (apoB) secretion and intracellular accumulation of lipids...
May 16, 2017: Cell Reports
https://www.readbyqxmd.com/read/28511322/-interaction-between-apob-gene-polymorphism-and-risk-factors-in-coronary-heart-disease-patients-without-lipid-lowering-treatment
#6
T Pu, H Y Yu, M Xu, Y Zhang, H Yan, L J Sun, W X Xu, Y Y Zhang, W Gao
Objective: To investigate the association between APOB gene R532W polymorphism and the risk of coronary heart disease (CHD) in patients without lipid-lowering treatment and to analyze the interactions between the variation of R532W and different risk factors of CHD. Methods: CHD and non-CHD were diagnosed according to coronary artery angiography (CAG) and/or coronary computed tomography angiogram (CTA) results, as well as clinical features. Blood samples from 771 CHD patients and 772 age- and sex-matched non-CHD controls, who never accepted any lipid-lowering treatments, were collected...
May 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28506386/serum-triglyceride-high-density-lipoprotein-cholesterol-apolipoprotein-b-and-coronary-heart-disease-in-a-chinese-population-undergoing-coronary-angiography
#7
Yan Ling, Jingjing Jiang, Bingjie Wu, Xin Gao
BACKGROUND: Increased serum triglyceride and apolipoprotein B (apoB) levels and decreased high-density lipoprotein cholesterol (HDL-C) levels are risk factors for cardiovascular diseases. The major types of dyslipidemia in Chinese population are hypertriglyceridemia and low HDL-C. OBJECTIVE: This study aimed to evaluate the effect of HDL-C, triglyceride, and apoB levels on the risk of coronary heart disease (CHD) in a Chinese population undergoing coronary angiography...
May 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28503188/impact-of-8-week-linoleic-acid-intake-in-soy-oil-on-lp-pla2-activity-in-healthy-adults
#8
Minkyung Kim, Minjoo Kim, Ayoung Lee, Hye Jin Yoo, Jung Soo Her, Sun Ha Jee, Jong Ho Lee
BACKGROUND: No intervention follow-up study has examined the association between plasma n-6 polyunsaturated fatty acids (PUFAs) and lipoprotein-associated phospholipase A2 (Lp-PLA2), which is a risk factor for cardiovascular disease (CVD). We aimed to determine whether the administration of linoleic acid (LA, 18:2n-6) in soy oil affected Lp-PLA2 activity in healthy adults. METHODS: Self-reported healthy participants (n = 150) were randomly assigned to three groups: a low LA group, in which 10 mL soy oil was replaced with one apple; a medium LA group, in which the typical food intake was maintained; and a high LA group, in which 1/3 cup of cooked refined rice was replaced with 9...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28502510/preliminary-spectrum-of-genetic-variants-in-familial-hypercholesterolemia-in-argentina
#9
Virginia G Bañares, Pablo Corral, Ana Margarida Medeiros, María Beatriz Araujo, Alfredo Lozada, Juan Bustamante, Roxana Cerretini, Graciela López, Mafalda Bourbon, Laura E Schreier
BACKGROUND: Familial hypercholesterolemia (FH) is a genetic disorder characterized by elevated low-density lipoprotein cholesterol and early cardiovascular disease. As cardiovascular disease is a leading cause of mortality in Argentina, early identification of patients with FH is of great public health importance. OBJECTIVE: The aim of our study was to identify families with FH and to approximate to the characterization of the genetic spectrum mutations of FH in Argentina...
March 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28502508/plasma-lipoprotein-a-levels-in-patients-with-homozygous-autosomal-dominant-hypercholesterolemia
#10
Barbara Sjouke, Reyhana Yahya, Michael W T Tanck, Joep C Defesche, Jacqueline de Graaf, Albert Wiegman, John J P Kastelein, Monique T Mulder, G Kees Hovingh, Jeanine E Roeters van Lennep
BACKGROUND: Patients with autosomal dominant hypercholesterolemia (ADH), caused by mutations in either low-density lipoprotein receptor (LDLR), apolipoprotein B (APOB), or proprotein convertase subtilisin-kexin type 9 (PCSK9) are characterized by high low-density lipoprotein cholesterol levels and in some studies also high lipoprotein(a) (Lp(a)) levels were observed. The question remains whether this effect on Lp(a) levels is gene-dose-dependent in individuals with either 0, 1, or 2 LDLR or APOB mutations...
March 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28502501/apolipoprotein-b-vs-non-high-density-lipoprotein-cholesterol-association-with-endothelial-hemostatic-markers-and-carotid-intima-media-thickness
#11
David Karasek, Helena Vaverkova, Lubica Cibickova, Jaromira Gajdova, Veronika Kubickova
BACKGROUND: Both apolipoprotein B (apoB) and non-high-density lipoprotein cholesterol (non-HDL-C) are accepted as alternative risk factors or targets for lipid-lowering therapy, which correlate more strongly with cardiovascular events than low-density lipoprotein cholesterol. OBJECTIVE: The aim of this cross-sectional study was to evaluate the differences in plasma levels of plasminogen activator inhibitor-1 (PAI-1) and of von Willebrand factor (vWF) as endothelial hemostatic markers and carotid intima-media thickness (C-IMT) as a morphologic marker for atherosclerotic vascular disease among dyslipidemic individuals with apoB levels higher, estimated or lower based on regression equation of apoB vs non-HDL-C...
March 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28500244/tamoxifen-reduces-hepatic-vldl-production-and-gh-secretion-in-women-a-possible-mechanism-for-steatosis-development
#12
Vita Birzniece, P Hugh R Barrett, Ken K Y Ho
CONTEXT: Growth hormone (GH) stimulates hepatic synthesis of very-low-density lipoproteins (VLDL), whereas hepatic steatosis develops as a result of GH deficiency. Steatosis is also a complication of tamoxifen treatment, the cause of which is not known. As tamoxifen inhibits the secretion and action of GH, we hypothesize that it induces steatosis by inhibiting hepatic VLDL export. AIM: To investigate whether tamoxifen reduces hepatic VLDL secretion. DESIGN: Eight healthy, normolipidemic women (age 64...
May 12, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28487135/estrogen-enhanced-apical-and-basolateral-secretion-of-apolipoprotein-b-100-by-polarized-trophoblast-derived-bewo-cells
#13
Miriam Kamper, Florian Mittermayer, Rosalinda Cabuk, Katharina Gelles, Isabella Ellinger, Marcela Hermann
Cholesterol is an important nutrient for fetal development and transplacental transport occurs at all stages of human pregnancy. Furthermore, cholesterol is required for membrane building as well as steroid hormone synthesis. Therefore, all placental cell types require cholesterol for proper function. In human term placenta, the syncytiotrophoblast (STB) faces the maternal circulation. Uptake of maternal-derived cholesterol at the apical membrane of the STB is well understood, but the route by which cholesterol exits at the basal side for subsequent transfer across the fetal endothelial cells (FEC) or to other placental cell types remains not well characterized...
May 6, 2017: Biochimie
https://www.readbyqxmd.com/read/28486149/dietary-supplementation-with-long-chain-monounsaturated-fatty-acid-isomers-decreases-atherosclerosis-and-alters-lipoprotein-proteomes-in-ldlr-mice
#14
Zhi-Hong Yang, Scott M Gordon, Denis Sviridov, Shuibang Wang, Robert L Danner, Milton Pryor, Boris Vaisman, Yuka Shichijo, Nobushige Doisaki, Alan T Remaley
BACKGROUND AND AIMS: Concentrated fish oils, containing a mixture of long-chain monounsaturated fatty acids (LCMUFA) with aliphatic chains longer than 18 C atoms (i.e., C20:1 and C22:1), have been shown to attenuate atherosclerosis development in mouse models. It is not clear, however, how individual LCMUFA isomers may act on atherosclerosis. METHODS: In the present study, we used saury fish oil-derived concentrates enriched in either C20:1 or C22:1 isomer fractions to investigate their individual effect on atherosclerosis and lipoprotein metabolism...
April 25, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28477018/variants-in-the-cxcl12-gene-was-associated-with-coronary-artery-disease-susceptibility-in-chinese-han-population
#15
Junbo Zhang, Huijun Ma, Jie Gao, Shu Kong, Jiangtao You, Ying Sheng
BACKGROUND: Coronary artery disease (CAD) is one of the most serious diseases all around the world. Previous studies have shown the function of CXCL12 in the process of atherosclerosis. The aim of this research is to examine whether variants of CXCL12 contribute to CAD. MATERIALS AND METHODS: To examine whether variants of CXCL12 contribute to CAD, we selected 6 single nucleotide polymorphisms (SNPs) of CXCL12, and genotyped by Sequenom MassARRAY technology in 597 CAD patients and 685 healthy control...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28473926/apolipoproteins-a-i-b-and-c-iii-and-obesity-in-young-adult-cherokee
#16
Wenyu Wang, Piers Blackett, Sohail Khan, Elisa Lee
Since young adult Cherokee are at increased risk for both diabetes and cardiovascular disease, we assessed association of apolipoproteins (A-I, B, and C-III in non-HDL and HDL) with obesity and related risk factors. Obese participants (BMI ≥ 30) aged 20-40 years (n = 476) were studied. Metabolically healthy obese (MHO) individuals were defined as not having any of four components of the ATP-III metabolic syndrome after exclusion of waist circumference, and obese participants not being MHO were defined as metabolically abnormal obese (MAO)...
2017: Journal of Lipids
https://www.readbyqxmd.com/read/28473885/prospects-and-limitations-of-antibody-mediated-clearing-of-lipoproteins-from-blood-plasma-prior-to-nanoparticle-tracking-analysis-of-extracellular-vesicles
#17
Morten Mørk, Aase Handberg, Shona Pedersen, Malene M Jørgensen, Rikke Bæk, Morten K Nielsen, Søren R Kristensen
Introduction: Nanoparticle tracking analysis (NTA) enables measurement of extracellular vesicles (EVs) but lacks the ability to distinct between EVs and lipoproteins which are abundantly present in blood plasma. Limitations in ultracentrifugation and size exclusion chromatography applied for EV isolation may result in inadequate EV purification and preservation. In this proof of concept study, we aimed to evaluate the potential of antibody-mediated removal of lipoproteins from plasma prior to extracellular vesicle (EV) analysis by nanoparticle tracking analysis (NTA)...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28473443/relationship-of-autoantibodies-to-mda-ldl-and-apob-immune-complexes-to-sex-ethnicity-subclinical-atherosclerosis-and-cardiovascular-events
#18
Anand Prasad, Paul Clopton, Colby Ayers, Amit Khera, James A de Lemos, Joseph L Witztum, Sotirios Tsimikas
OBJECTIVE: Modifications of lipid constituents within atherosclerotic lesions generate neoepitopes that activate innate and adaptive immune responses. We aimed to define the prevalence, distribution, and relationship of autoantibody titers of oxidized lipoproteins to subclinical atherosclerosis and major adverse cardiovascular events (MACE) in different ethnic groups. APPROACH AND RESULTS: IgG and IgM autoantibodies to malondialdehyde-modified low-density lipoprotein (MDA-LDL) and apolipoprotein B-100-immune complexes were measured in 3509 individuals (1814 blacks, 1031 whites, 589 Hispanics, and 85 no race identifier) from the Dallas Heart Study with median 10...
May 4, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28471688/atherogenic-impact-of-lecithin-cholesterol-acyltransferase-and-its-relation-to-cholesterol-esterification-rate-in-hdl-fer-hdl-and-aip-log-tg-hdl-c-biomarkers-the-butterfly-effect
#19
M Dobiášová
The atherogenic impact and functional capacity of LCAT was studied and discussed over a half century. This review aims to clarify the key points that may affect the final decision on whether LCAT is an anti-atherogenic or atherogenic factor. There are three main processes involving the efflux of free cholesterol from peripheral cells, LCAT action in intravascular pool where cholesterol esterification rate is under the control of HDL, LDL and VLDL subpopulations, and finally the destination of newly produced cholesteryl esters either to the catabolism in liver or to a futile cycle with apoB lipoproteins...
May 4, 2017: Physiological Research
https://www.readbyqxmd.com/read/28470492/unsaturated-fatty-acids-improve-atherosclerosis-markers-in-obese-and-overweight-non-diabetic-elderly-patients
#20
Patrícia Amante de Oliveira, Cristiane Kovacs, Priscila Moreira, Daniel Magnoni, Mohamed Hassan Saleh, Joel Faintuch
BACKGROUND: Several studies have demonstrated the benefits of replacing trans and saturated fats with unsaturated fatty acids on cardiovascular diseases. We aimed to demonstrate the effect of polyunsaturated and monounsaturated fat supplementation on the biochemical and endothelial markers of atherosclerotic disease in obese or overweight non-diabetic elderly patients. METHOD: Seventy-nine patients were randomly divided into three groups: flaxseed oil, olive oil, and sunflower oil; patients in each group received 30 mL of oil for 90 days...
May 3, 2017: Obesity Surgery
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