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ApoB/apoA-I

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https://www.readbyqxmd.com/read/28209220/very-low-density-lipoprotein-associated-apolipoproteins-predict-cardiovascular-events-and-are-lowered-by-inhibition%C3%A2-of%C3%A2-apoc-iii
#1
Raimund Pechlaner, Sotirios Tsimikas, Xiaoke Yin, Peter Willeit, Ferheen Baig, Peter Santer, Friedrich Oberhollenzer, Georg Egger, Joseph L Witztum, Veronica J Alexander, Johann Willeit, Stefan Kiechl, Manuel Mayr
BACKGROUND: Routine apolipoprotein (apo) measurements for cardiovascular disease (CVD) are restricted to apoA-I and apoB. Here, the authors measured an unprecedented range of apolipoproteins in a prospective, population-based study and relate their plasma levels to risk of CVD. OBJECTIVES: This study sought to measure apolipoproteins directly by mass spectrometry and compare their associations with incident CVD and to obtain a system-level understanding of the correlations of apolipoproteins with the plasma lipidome and proteome...
February 21, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28167355/development-of-a-new-bioactivatable-fluorescent-probe-for-quantification-of-apolipoprotein-a-i-proteolytic-degradation-in%C3%A2-vitro-and-in%C3%A2-vivo
#2
Foued Maafi, Baoqiang Li, Catherine Gebhard, Mathieu R Brodeur, Walid Nachar, Louis Villeneuve, Frédéric Lesage, David Rhainds, Eric Rhéaume, Jean-Claude Tardif
BACKGROUND AND AIMS: The potential benefits of high-density lipoproteins (HDL) against atherosclerosis are attributed to its major protein component, apolipoprotein A-I (apoA-I). Most of the apoA-I in the vascular wall appears to be in its lipid-poor form. The latter, however, is subjected to degradation by proteases localized in atherosclerotic plaques, which, in turn, has been shown to negatively impact its atheroprotective functions. Here, we report the development and in vivo use of a bioactivatable near-infrared full-length apoA-I-Cy5...
January 21, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28110289/associations-of-apolipoprotein-b-apolipoprotein-a-i-ratio-with-pre-diabetes-and-diabetes-risks-a-cross-sectional-study-in-chinese-adults
#3
Shuang Zheng, Tingting Han, Hua Xu, Huan Zhou, Xingxing Ren, Peihong Wu, Jun Zheng, Lihua Wang, Ming Zhang, Yihong Jiang, Yawen Chen, Huiying Qiu, Wei Liu, Yaomin Hu
BACKGROUND: Apolipoprotein B/apolipoprotein A-I (ApoB/ApoA-I) ratio is a useful predictor of cardiovascular risk. However, the association between the ApoB/ApoA-I ratio and the risk of type 2 diabetes mellitus (T2DM) is still obscure. AIMS: To investigate the associations between the ApoB/ApoA-I ratio and the risk of T2DM and pre-diabetes in a Chinese population, and to assess the role of gender in these associations. METHODS: A stratified random sampling design was used in this cross-sectional study which included 264 men and 465 women with normal glucose tolerance (NGT), pre-diabetes or T2DM...
January 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/27816355/correlations-between-serum-apolipoprotein-a-i-and-formation-of-vocal-cord-polyp
#4
Hui-Ping Zhang, Rong Zhang
OBJECTIVE: This study aims to investigate the correlations between serum apolipoprotein A-I (ApoA-I) and the formation of vocal cord polyps (VCPs). STUDY DESIGN: This study used the nonmatched case-control study method. METHODS: The serum total cholesterol (TC), triglyceride, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol, ApoA-I, apolipoprotein B (ApoB), and ApoA-I/ApoB levels of 89 VCP patients and 87 normal volunteers were compared...
November 2, 2016: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/27781059/relationship-of-lipid-and-lipoprotein-ratios-with-coronary-severity-in-patients-with-new-on-set-coronary-artery-disease-complicated-with-type-2-diabetics
#5
Ying Du, Juan Chen, Man-Hua Chen, Sheng-Hua Yang, Sha Li, Yuan-Lin Guo, Cheng-Gang Zhu, Rui-Xia Xu, Qian Dong, Jian-Jun Li
BACKGROUND: Diabetes mellitus (DM) is associated with coronary artery disease (CAD) progression. Although previous studies have demonstrated the association of lipid and lipoprotein ratios with CAD, no data are currently available concerning the relationship between lipid and lipoprotein ratios and the severity of new on-set CAD in diabetics. Therefore, the aim of the present study was to investigate the usefulness of lipid and lipoprotein ratios in predicting the severity of CAD in patients with type 2 DM (T2DM)...
August 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/27749370/recent-explanatory-trials-of-the-mode-of-action-of-drug-therapies-on-lipoprotein-metabolism
#6
Dick C Chan, P Hugh R Barrett, Gerald F Watts
PURPOSE OF REVIEW: Dysregulated lipoprotein metabolism leads to increased plasma concentrations of atherogenic lipoproteins. We highlight the findings from recent studies of the effect of lipid-regulating therapies on apolipoprotein metabolism in humans employing endogenous labelling with stable isotopically labelled isotopomers. RECENT FINDINGS: Fish oil supplementation and niacin treatment both reduce fasting and postprandial triglyceride levels by decreasing the hepatic secretion of VLDL-apoB-100 (apoB) and apoB-48-containing chylomicron particles in obese and/or type 2 diabetes...
October 5, 2016: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/27737874/age-and-cardiovascular-risk-attributable-to-apolipoprotein-b-low-density-lipoprotein-cholesterol-or-non-high-density-lipoprotein-cholesterol
#7
Allan D Sniderman, Shofiqul Islam, Matthew McQueen, Michael Pencina, Curt D Furberg, George Thanassoulis, Salim Yusuf
BACKGROUND: Higher concentrations of the apolipoprotein B (apoB) lipoproteins increase the risk of cardiovascular disease. However, whether the risk associated with apoB lipoproteins varies with age has not been well examined. METHODS AND RESULTS: We determined the associations for total cholesterol, low-density lipoprotein (LDL)-cholesterol (LDL-C), non-high-density lipoprotein-cholesterol (non-HDL-C), apoB, apolipoprotein A-I (apoA-I), and HDL-cholesterol (HDL-C) with myocardial infarction at different ages in 11 760 controls and 8998 myocardial infarction cases of the INTERHEART Study...
October 13, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27712963/effect-of-classic-ketogenic-diet-treatment-on-lipoprotein-subfractions-in-children-and-adolescents-with-refractory-epilepsy
#8
Patricia Azevedo de Lima, Mariana Baldini Prudêncio, Daniela Kawamoto Murakami, Leticia Pereira de Brito Sampaio, Antônio Martins Figueiredo Neto, Nágila Raquel Teixeira Damasceno
OBJECTIVE: The aim of this study was to evaluate the effects of the classic ketogenic diet (KD) on low-density lipoprotein (LDL) and high-density lipoprotein (HDL) subfractions in children and adolescents with refractory epilepsy. METHODS: This prospective study recruited children and adolescents of either sex, whose epilepsy was refractory to treatment with multiple drugs. To be included, the patient had to have an indication for treatment with the KD and be treated as an outpatient...
January 2017: Nutrition
https://www.readbyqxmd.com/read/27667389/on-column-trypsin-digestion-coupled-with-lc-ms-ms-for-quantification-of-apolipoproteins
#9
Christopher A Toth, Zsuzsanna Kuklenyik, Jeffrey I Jones, Bryan A Parks, Michael S Gardner, David M Schieltz, Jon C Rees, Michael L Andrews, Lisa G McWilliams, James L Pirkle, John R Barr
: Apolipoproteins measured in plasma or serum are potential biomarkers for assessing metabolic irregularities that are associated with the development of cardiovascular disease (CVD). LC-MS/MS allows quantitative measurement of multiple apolipoproteins in the same sample run. However, the accuracy and precision of the LC-MS/MS measurement depends on the reproducibility of the enzymatic protein digestion step. With the application of an immobilized enzyme reactor (IMER), the reproducibility of the trypsin digestion can be controlled with high precision via flow rate, column volume and temperature...
September 23, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/27651477/synergistic-and-non-synergistic-associations-for-cigarette-smoking-and-non-tobacco-risk-factors-for-cardiovascular-disease-incidence-in-the-atherosclerosis-risk-in-communities-aric-study
#10
Jay H Lubin, David Couper, Pamela L Lutsey, Hiroshi Yatsuya
INTRODUCTION: Cigarette smoking, various metabolic and lipid-related factors and hypertension are well-recognized cardiovascular disease (CVD) risk factors. Since smoking affects many of these factors, use of a single imprecise smoking metric, for example, ever or never smoked, may allow residual confounding and explain inconsistencies in current assessments of interactions. METHODS: Using a comprehensive model in pack-years and cigarettes/day for the complex smoking-related relative risk (RR) of CVD to reduce residual confounding, we evaluated interactions with non-tobacco risk factors, including additive (non-synergistic) and multiplicative (synergistic) forms...
September 20, 2016: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/27640368/analysis-of-apolipoprotein-genes-and-their-involvement-in-disease-response-of-channel-catfish-after-bacterial-infection
#11
Yujia Yang, Qiang Fu, Tao Zhou, Yun Li, Shikai Liu, Qifan Zeng, Xiaozhu Wang, Yulin Jin, Changxu Tian, Zhenkui Qin, Rex Dunham, Zhanjiang Liu
Apolipoproteins are protein component of plasma lipoproteins. They exert crucial roles in lipoprotein metabolism and serve as enzyme cofactors, receptor ligands, and lipid transfer carriers in mammals. In teleosts, apolipoproteins are also involved in diverse processes including embryonic and ontogenic development, liver and digestive system organogenesis, and innate immunity. In this study, we identified a set of 19 apolipoprotein genes in channel catfish (Ictalurus punctatus). Phylogenetic analysis and syntenic analysis were conducted to determine their identities and evolutionary relationships...
February 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/27415600/syphilitic-dementia-and-lipid-metabolism
#12
Y Jiang, Y F Zhang, M Liu, L L Ma, F H Peng, Q L Huang, X M Ma, X H Chen
BACKGROUND AND PURPOSE: Chronic syphilitic infection may lead to dementia. It is in general paresis (GP), which is the major late form of neurosyphilis, that cognitive impairment frequently occurs. The association between lipid metabolism and GP is unclear. METHODS: In this study, serum lipids were studied in 188 GP patients, in 241 syphilitic patients without neurosyphilis and in 539 healthy controls. The Mini-Mental State Examination (MMSE) was tested in all GP patients...
October 2016: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27344180/predictive-value-of-chemotherapy-related-high-density-lipoprotein-cholesterol-hdl-elevation-in-patients-with-colorectal-cancer-receiving-adjuvant-chemotherapy-an-exploratory-analysis-of-851-cases
#13
Yun Wang, Zhi-Qiang Wang, Feng-Hua Wang, Xue-Fen Lei, Shu-Mei Yan, De-Shen Wang, Fei Zhang, Rui-Hua Xu, Ling-Yun Wang, Yu-Hong Li
BACKGROUND: The phenomenon of chemotherapy-related lipid alterations has been reported based on a small number of patients and varies among different cancers. However, little is known about these alterations in colorectal cancer (CRC) patients. RESULTS: Patients in cohort 1, but not in cohort 2, exhibited significantly increased cholesterol, triglyceride, HDL-C, and ApoA-I levels, and decreased LDL-C and ApoB levels after adjuvant chemotherapy. Patients with chemotherapy-related HDL-C elevation exhibited better 3-year DFS (84...
August 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/27341533/ldl-c-apob-and-hdl-c-apoa-1-ratios-predict-incident-chronic-kidney-disease-in-a-large-apparently-healthy-cohort
#14
Ji Cheol Bae, Ji Min Han, Sam Kwon, Jae Hwan Jee, Tae Yang Yu, Moon Kyu Lee, Jae Hyeon Kim
BACKGROUND AND AIMS: The objective of this study was to evaluate the ability of lipid variables to predict the development of chronic kidney disease (CKD). We investigated the longitudinal association between lipid profiles and incident CKD in a large apparently healthy cohort. METHODS: A retrospective longitudinal analysis of 10,288 subjects who had participated in comprehensive health check-ups at least four times over a 7-year period was conducted. The risk of incident CKD associated with lipid variables was analyzed using adjusted hazard ratio (HR) for CKD per 1 standard deviation (SD) increase in lipid level...
August 2016: Atherosclerosis
https://www.readbyqxmd.com/read/27256172/association-between-serum-lipid-profiles-and-early-neurological-deterioration-in-acute-ischemic-stroke
#15
Wi-Sun Ryu, Dawid Schellingerhout, Sang-Wook Jeong, Matthias Nahrendorf, Dong-Eog Kim
BACKGROUND: Dyslipidemia is associated with chronic cardiovascular disease. However, the effect of dyslipidemia on acute ischemic stroke is unclear. We hypothesized that dyslipidemia could contribute to early neurological deterioration (END) after ischemic stroke. METHODS: A total of 410 acute ischemic stroke patients who were admitted to our stroke center within 24 hours after ictus were consecutively included in this study. END was defined as any new neurological symptoms/signs or any neurological worsening occurring during the admission and/or within 3 weeks after the index stroke...
August 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27240017/relationship-between-selected-oxidative-stress-markers-and-lipid-risk-factors-for-cardiovascular-disease-in-middle-aged-adults-and-its-possible-clinical-relevance
#16
Alena Viktorinova, Klara Svitekova, Anna Stecova, Marian Krizko
OBJECTIVES: Decreased activity of HDL-associated paraoxonase 1 (PON1) and elevated levels of lipid peroxides together with abnormal lipid profile may prognosticate the progression of atherosclerosis. The aim of this study was to assess associations between selected oxidative stress markers (PON1, lipid peroxides) and lipid risk factors for cardiovascular disease in middle-aged subjects. DESIGN AND METHODS: Arylesterase activity of PON1; lipid peroxides; total-, HDL-, LDL-, non-HDL-cholesterol; triglycerides; apolipoproteins A-I (ApoA-I) and B (ApoB), and lipid risk indexes were determined in serum of 75 volunteers (mean age 41...
August 2016: Clinical Biochemistry
https://www.readbyqxmd.com/read/27233433/thermal-stability-of-human-plasma-electronegative-low-density-lipoprotein-a-paradoxical-behavior-of-low-density-lipoprotein-aggregation
#17
Anna Rull, Shobini Jayaraman, Donald L Gantz, Andrea Rivas-Urbina, Montserrat Pérez-Cuellar, Jordi Ordóñez-Llanos, Jose Luis Sánchez-Quesada, Olga Gursky
Low-density lipoprotein (LDL) aggregation is central in triggering atherogenesis. A minor fraction of electronegative plasma LDL, termed LDL(-), plays a special role in atherogenesis. To better understand this role, we analyzed the kinetics of aggregation, fusion and disintegration of human LDL and its fractions, LDL(+) and LDL(-). Thermal denaturation of LDL was monitored by spectroscopy and electron microscopy. Initially, LDL(-) aggregated and fused faster than LDL(+), but later the order reversed. Most LDL(+) disintegrated and precipitated upon prolonged heating...
September 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27216847/triglyceride-rich-lipoproteins-and-remnants-targets-for-therapy
#18
REVIEW
Geesje M Dallinga-Thie, Jeffrey Kroon, Jan Borén, M John Chapman
It is now evident that elevated circulating levels of triglycerides in the non-fasting state, a marker for triglyceride (TG)-rich remnant particles, are associated with increased risk of premature cardiovascular disease (CVD). Recent findings from basic and clinical studies have begun to elucidate the mechanisms that contribute to the atherogenicity of these apoB-containing particles. Here, we review current knowledge of the formation, intravascular remodelling and catabolism of TG-rich lipoproteins and highlight (i) the pivotal players involved in this process, including lipoprotein lipase, glycosylphosphatidylinositol HDL binding protein 1 (GPIHBP1), apolipoprotein (apo) C-II, apoC-III, angiopoietin-like protein (ANGPTL) 3, 4 and 8, apoA-V and cholesteryl ester transfer protein; (ii) key determinants of triglyceride (TG) levels and notably rates of production of very-low-density lipoprotein 1 (VLDL1) particles; and (iii) the mechanisms which underlie the atherogenicity of remnant particles...
July 2016: Current Cardiology Reports
https://www.readbyqxmd.com/read/27171197/high-density-lipoprotein-function-in-exudative-age-related-macular-degeneration
#19
Laura Pertl, Sabine Kern, Martin Weger, Silke Hausberger, Markus Trieb, Vanessa Gasser-Steiner, Anton Haas, Hubert Scharnagl, Akos Heinemann, Gunther Marsche
PURPOSE: High-density lipoproteins (HDL) have long been implicated in the pathogenesis of age-related macular degeneration (AMD). However, conflicting results have been reported with regard to the associations of AMD with HDL-cholesterol levels. The present study is the first to assess HDL composition and metrics of HDL function in patients with exudative AMD and control patients. METHODS: Blood samples were collected from 29 patients with exudative AMD and 26 age-matched control patients...
2016: PloS One
https://www.readbyqxmd.com/read/27108950/the-novel-selective-ppar%C3%AE-modulator-spparm%C3%AE-pemafibrate-improves-dyslipidemia-enhances-reverse-cholesterol-transport-and-decreases-inflammation-and-atherosclerosis
#20
Nathalie Hennuyer, Isabelle Duplan, Charlotte Paquet, Jonathan Vanhoutte, Eloise Woitrain, Véronique Touche, Sophie Colin, Emmanuelle Vallez, Sophie Lestavel, Philippe Lefebvre, Bart Staels
BACKGROUND: Atherosclerosis is characterized by lipid accumulation and chronic inflammation in the arterial wall. Elevated levels of apolipoprotein (apo) B-containing lipoproteins are a risk factor for cardiovascular disease (CVD). By contrast, plasma levels of functional high-density lipoprotein (HDL) and apoA-I are protective against CVD by enhancing reverse cholesterol transport (RCT). Activation of peroxisome proliferator-activated receptor-α (PPARα), a ligand-activated transcription factor, controls lipid metabolism, cellular cholesterol trafficking in macrophages and influences inflammation...
June 2016: Atherosclerosis
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