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ApoB/apoA-I

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https://www.readbyqxmd.com/read/28437840/blood-biomarkers-of-carbohydrate-lipid-and-apolipoprotein-metabolisms-and-risk-of-amyotrophic-lateral-sclerosis-a-more-than-20-year-follow-up-of-the-swedish-amoris-cohort
#1
Daniela Mariosa, Niklas Hammar, Håkan Malmström, Caroline Ingre, Ingmar Jungner, Weimin Ye, Fang Fang, Göran Walldius
Objective To assess the associations of blood biomarkers of carbohydrate, lipid and apolipoprotein metabolisms with the future risk of ALS. Methods In the Apolipoprotein-related MOrtality RISk (AMORIS) study, we enrolled 636,132 men and women during 1985-1996 in Stockholm, Sweden with measurements of serum glucose, total cholesterol, triglycerides, apolipoprotein B (apoB), and apolipoprotein A-I (apoA-I). Serum LDL-C and HDL-C were either directly measured or calculated from total cholesterol, triglycerides and apoA-I...
April 24, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28431663/effects-of-torcetrapib-and-statin-treatment-on-apoc-iii-and-apoprotein-defined-lipoprotein-subclasses-from-the-illuminate-trial
#2
John Bagdade, Philip Barter, Carmen Quiroga, Pierre Alaupovic
In the ILLUMINATE Trial, treatment with the cholesteryl ester transfer protein inhibitor torcetrapib resulted in a significant increase in both atherosclerotic cardiovascular disease events and total mortality which was not explained by changes in the routinely measured plasma lipids. To determine whether alterations in lipoproteins defined by their apoprotein content that are not estimated with conventional laboratory methods contributed to these unexpected events, we measured the apoB- and apoA-containing subclasses in a subgroup of ILLUMINATE participants...
March 18, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28424539/%C3%AE-3-adrenoceptor-activation-upregulates-apolipoprotein-a-i-expression-in-hepg2-cells-which-might-further-promote-cholesterol-efflux-from-macrophage-foam-cells
#3
Xia-Qing Gao, Yan-Fang Li, Zhi-Li Jiang
OBJECTIVE: The aim of this study was to explore the effects of β3-adrenoceptor (β3-AR) activation on HepG2 cells and its influence on cholesterol efflux from macrophage foam cells. MATERIALS AND METHODS: HepG2 cells were cultured and treated with the β3-AR agonist, BRL37344, and antagonist, SR52390A, and the expression of apolipoprotein (Apo) A-I, ApoA-II, ApoB, and β3-AR in the supernatants and cells was determined. The expression of peroxisome proliferator-activated receptor (PPAR) γ and PPARα in the HepG2 cells was also assessed...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28412650/comparative-effects-of-cholesteryl-ester-transfer-protein-inhibition-statin-or-ezetimibe-on-lipid-factors-the-accentuate-trial
#4
Stephen J Nicholls, Kausik K Ray, Christie M Ballantyne, Lauren A Beacham, Debra L Miller, Giacomo Ruotolo, Steven E Nissen, Jeffrey S Riesmeyer
BACKGROUND AND AIMS: The optimal approaches to management of patients treated with moderate statin doses on lipid parameters are unknown. The ACCENTUATE study aimed to compare the effects of adding the cholesteryl ester transfer protein inhibitor (CETP) evacetrapib, ezetimibe or increasing statin dose in atorvastatin-treated high-vascular risk patients on lipid parameters. METHODS: 366 patients with atherosclerotic cardiovascular disease (ASCVD) and/or diabetes were treated with atorvastatin 40 mg/day for 28 days prior to randomization to atorvastatin 40 mg plus evacetrapib 130 mg, atorvastatin 80 mg, atorvastatin 40 mg plus ezetimibe 10 mg or atorvastatin 40 mg plus placebo, daily for 90 days at 64 centers in the United States...
April 8, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28320750/metabolic-mediators-of-the-effects-of-family-history-and-genetic-risk-score-on-coronary-heart-disease-findings-from-the-malm%C3%A3-diet-and-cancer-study
#5
Josef Fritz, Dov Shiffman, Olle Melander, Hayato Tada, Hanno Ulmer
BACKGROUND: Family history of coronary heart disease (CHD) as well as genetic predisposition to CHD assessed by a genetic risk score (GRS) are predictors of CHD risk. It is, however, uncertain to what extent these risk predictors are mediated by major metabolic pathways. METHODS AND RESULTS: Total effects of self-reported family history and a 50-variant GRS (GRS50), as well as effects mediated by apolipoprotein B and A-I (apoB, apoA-I), blood pressure, and diabetes mellitus, on incidence of CHD were estimated in 23 595 participants of the Malmö Diet and Cancer study (a prospective, population-based study)...
March 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28304324/assessment-of-serum-apolipoprotien-b-and-apolipoprotein-a-1-and-their-ratio-in-healthy-full-term-small-for-gestational-age-newborns
#6
A Agrawal, J Shrivastava, R Dwivedi, M Siddiqui
BACKGROUND: Programmed changes in growth restricted fetuses can increase the risk of adulthood diseases due to elevated serum cholesterol and apolipoprotein-B (Apo-B) concentrations. Increasing evidence demonstrated the role of apoB/apoA-I ratio as a strong risk factor for cardiovascular diseases. OBJECTIVE: To determine the concentration of cord blood lipoproteins and apolipoproteins as well as their correlation with birth weight. METHODS: This cross-sectional study was conducted in a teaching institution of central India...
March 16, 2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28296203/high-throughput-quantification-of-apolipoproteins-a-i-and-b-100-by-isotope-dilution-ms-targeting-fast-trypsin-releasable-peptides-without-reduction-and-alkylation
#7
Bryan A Parks, David M Schieltz, Michael L Andrews, Michael S Gardner, Jon C Rees, Christopher A Toth, Jeffrey I Jones, Lisa G McWilliams, Zsuzsanna Kuklenyik, James L Pirkle, John R Barr
PURPOSE: Apolipoprotein A-I (ApoA-I) and apolipoprotein B-100 (ApoB-100) are amphipathic proteins that are strong predictors of cardiovascular disease risk. The traceable calibration of apolipoprotein assays is a persistent challenge, especially for ApoB-100, which cannot be solubilized in purified form. EXPERIMENTAL DESIGN: A simultaneous quantitation method for ApoA-I and ApoB-100 was developed using tryptic digestion without predigestion reduction and alkylation, followed by LC separation coupled with isotope dilution MS analysis...
March 10, 2017: Proteomics. Clinical Applications
https://www.readbyqxmd.com/read/28259941/consumption-of-policosanol-enhances-hdl-functionality-via-cetp-inhibition-and-reduces-blood-pressure-and-visceral-fat-in-young-and-middle-aged-subjects
#8
Jae-Yong Kim, Seong-Min Kim, Suk-Jeong Kim, Eun-Young Lee, Jae-Ryong Kim, Kyung-Hyun Cho
It is well-known that policosanol can improve serum lipid profiles, although the physiological mechanism is still unknown. Here, we investigated functional and structural changes in lipoproteins after consumption of policosanol. To investigate the physiological effect of policosanol, we analyzed serum parameters in young non-smoker (YN; n=7, 24.0±2.4 years), young smoker (YS; n=7, 26.3±1.5 years), and middle-aged subjects (MN; n=11, 52.5±9.8 years) who consumed policosanol daily (10 mg/day) for 8 weeks...
April 2017: International Journal of Molecular Medicine
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
#9
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
#10
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...
March 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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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