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Lipid cholesterol metabolism atherosclerosis

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https://www.readbyqxmd.com/read/28982667/endogenous-cholesterol-excretion-is-negatively-associated-with-carotid-intima-media-thickness-in-humans
#1
Xiaobo Lin, Susan B Racette, Lina Ma, Michael Wallendorf, Victor G Dávila-Román, Richard E Ostlund
OBJECTIVE: Epidemiological studies strongly suggest that lipid factors independent of low-density lipoprotein cholesterol contribute significantly to cardiovascular disease risk. Because circulating lipoproteins comprise only a small fraction of total body cholesterol, the mobilization and excretion of cholesterol from plasma and tissue pools may be an important determinant of cardiovascular disease risk. Our hypothesis is that fecal excretion of endogenous cholesterol is protective against atherosclerosis...
October 5, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28971272/monocyte-and-macrophage-immunometabolism-in-atherosclerosis
#2
REVIEW
Laszlo Groh, Samuel T Keating, Leo A B Joosten, Mihai G Netea, Niels P Riksen
Atherosclerosis is characterized by chronic low grade inflammation of arteries that results in the development of lipid dense plaques. Chronic inflammation induced by Western-type diet is associated with the risk of developing atherosclerosis, and new insights shed light on the importance of metabolic and functional reprogramming in monocytes and macrophages for progression of atherosclerosis. This review aims to provide an overview of our current understanding into how the metabolic reprogramming of glucose, cholesterol, fatty acid, and amino acid metabolism in macrophages contributes to inflammation during atherosclerosis...
October 2, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28965954/mir-758-5p-regulates-cholesterol-uptake-via-targeting-the-cd36-3-utr
#3
Bi-Rong Li, Lin-Qin Xia, Jing Liu, Lin-Ling Liao, Yang Zhang, Min Deng, Hui-Juan Zhong, Ting-Ting Feng, Ping-Ping He, Xin-Ping Ouyang
miR-758-3p plays an important role via regulting ABCA1-mediated cholesterol efflux in atherosclerosis. However, the mechanism of miR-758-5p in cholesterol metabolism is still unclear. Here, we revealed that miR-758-5p decreased total cholesterol accumulation in THP-1 macrophage derived foam cells through markedly reducing cholesterol uptake, and no effect on the cholesterol efflux. Interestingly, computational analysis suggests that CD36 may be a target gene of miR-758-5p. Our study further demonstrated that miR-758-5p decreased CD36 expression at both protein and mRNA levels via targeting the CD36 3'UTR in THP-1 macrophage derived foam cells...
September 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28963918/comprehensive-lipid-and-metabolite-profiling-of-children-with-and-without-familial-hypercholesterolemia-a-cross-sectional-study
#4
Jacob J Christensen, Stine M Ulven, Kjetil Retterstøl, Ingunn Narverud, Martin P Bogsrud, Tore Henriksen, Jens Bollerslev, Bente Halvorsen, Pål Aukrust, Kirsten B Holven
BACKGROUND AND AIMS: Individuals with familial hypercholesterolemia (FH) have elevated low-density lipoprotein cholesterol (LDL-C), accelerated atherosclerosis, and premature cardiovascular disease. Whereas children with lifestyle-induced dyslipidemias often present with complex lipid abnormalities, children with FH have isolated hypercholesterolemia. However, to the best of our knowledge, a comprehensive profiling of FH children is lacking. Therefore, we aimed to characterize the lipid-related and metabolic alterations associated with elevated LDL-C in children with FH and healthy children...
September 21, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28960806/regional-evidence-and-international-recommendations-to-guide-lipid-management-in-asian-patients-with-type-2-diabetes-with-special-reference-to-renal-dysfunction
#5
REVIEW
Titus Wl Lau, Kevin Ek Tan, Jason Cj Choo, T G Ng, Tavintharan S, Juliana C N Chan
The anticipated increase in the prevalence and incidence of type 2 diabetes in Asia, and its associated cardiovascular-renal complications will place a significant burden on patients, caregivers and society. Despite the proven effectiveness of lipid management in reducing these complications, there are major treatment gaps especially in Asian patients with young-onset diabetes and chronic kidney disease. Recent international guidelines recommended the adoption of absolute risk estimation of atherosclerosis and cardiovascular disease to guide treatment intensity...
September 28, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/28954528/recombinant-human-cytoglobin-prevents-atherosclerosis-by-regulating-lipid-metabolism-and-oxidative-stress
#6
Lingling Ou, Xin Li, Baihong Chen, Zhenhuang Ge, Junyi Zhang, Ye Zhang, Gaotai Cai, Zhen Li, Ping Wang, Wenqi Dong
Atherosclerosis is a chronic inflammatory vascular disease characterized by lipid accumulation and endothelial dysfunction. Cytoglobin has been shown to exert protective effects under oxidative stress conditions. The aim of this study was to determine whether recombinant human cytoglobin (rhCYGB) has protective effects against atherosclerosis. We intraperitoneally injected rhCYGB (0, 4, or 7 mg/kg BW) into the atherosclerotic rats daily for 60 days. The rhCYGB injections reduced low-density lipoprotein cholesterol (LDL-C) levels and increased high-density lipoprotein cholesterol levels in a dose-dependent manner, rhCYGB (7 mg/kg) significantly attenuated atherosclerosis...
January 1, 2017: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28954482/gut-microbiome-as-a-biomarker-of-cardiometabolic-disorders
#7
Anna Gózd-Barszczewska, Maria Kozioł-Montewka, Piotr Barszczewski, Agata Młodzińska, Kinga Humińska
INTRODUCTION AND OBJECTIVE: Cardiovascular diseases are the leading cause of death in Europe and worldwide. One of the most important risk factors for atherosclerosis are lipid metabolism disorders, in particular hipercholesterolaemia. The aim of the study was to determine the correlation between gut microbiota composition and atherosclerosis risk factors, so in order that it might be used as a biomarker for coronary artery disease diagnosis. MATERIAL AND METHODS: The study involved middle-aged men in eastern Poland with central obesity (n=20), subjects with atherosclerosis (n=15) and those with no cardiovascular diseases (n=5)...
September 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28948955/factors-affecting-high-density-lipoprotein-cholesterol-in-hiv-infected-patients-on-nevirapine-based-antiretroviral-therapy
#8
C Padmapriyadarsini, K Ramesh, L Sekar, Geetha Ramachandran, Devaraj Reddy, G Narendran, S Sekar, C Chandrasekar, D Anbarasu, Christine Wanke, Soumya Swaminathan
BACKGROUND & OBJECTIVES: Cardiovascular disease (CVD) risk with low high-density lipoprotein cholesterol (HDL-C) and high triglycerides is common in the general population in India. As nevirapine (NVP)-based antiretroviral therapy (ART) tends to increase HDL-C, gene polymorphisms associated with HDL-C metabolism in HIV-infected adults on stable NVP-based ART were studied. METHODS: A cross-sectional study was conducted between January 2013 and July 2014 among adults receiving NVP-based ART for 12-15 months...
May 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28940111/hyperuricemia-is-associated-with-increased-apo-ai-fractional-catabolic-rates-and-dysfunctional-hdl-in-new-zealand-rabbits
#9
Miriam Martínez-Ramírez, Cristóbal Flores-Castillo, L Gabriela Sánchez-Lozada, Rocío Bautista-Pérez, Elizabeth Carreón-Torres, José Manuel Fragoso, José Manuel Rodriguez-Pérez, Fernando E García-Arroyo, Victoria López-Olmos, María Luna-Luna, Gilberto Vargas-Alarcón, Martha Franco, Oscar Pérez-Méndez
The potential cause-effect relationship between uric acid plasma concentrations and HDL functionality remains elusive. Therefore, this study aimed to explore the effect of oxonic acid (OA)-induced hyperuricemia on the HDL size distribution, lipid content of HDL subclasses, and apo AI turnover, as well as HDL functionality in New Zealand white rabbits. Experimental animals received OA 750 mg/kg/day by oral gavage during 21 days. The HDL-apo AI fractional catabolic rate (FCR) was determined by exogenous labeling with (125)I, and HDL subclasses were determined by sequential ultracentrifugation and PAGE...
September 22, 2017: Lipids
https://www.readbyqxmd.com/read/28928671/aerobic-exercise-training-selectively-changes-oxysterol-levels-and-metabolism-reducing-cholesterol-accumulation-in-the-aorta-of-dyslipidemic-mice
#10
Guilherme Silva Ferreira, Paula R Pinto, Rodrigo T Iborra, Vanessa Del Bianco, Monique Fátima Mello Santana, Edna Regina Nakandakare, Valéria S Nunes, Carlos E Negrão, Sergio Catanozi, Marisa Passarelli
Background: Oxysterols are bioactive lipids that control cellular cholesterol synthesis, uptake, and exportation besides mediating inflammation and cytotoxicity that modulate the development of atherosclerosis. Aerobic exercise training (AET) prevents and regresses atherosclerosis by the improvement of lipid metabolism, reverse cholesterol transport (RCT) and antioxidant defenses in the arterial wall. We investigated in dyslipidemic mice the role of a 6-week AET program in the content of plasma and aortic arch cholesterol and oxysterols, the expression of genes related to cholesterol flux and the effect of the exercise-mimetic AICAR, an AMPK activator, in macrophage oxysterols concentration...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28926478/characterization-of-spontaneous-hydrocephalus-development-in-the-young-atherosclerosis-prone-mice
#11
Chuanguo Liu, Guorong Li, Pingping Wang, Yan Wang, Jie Pan
Little has been reported on whether abnormal lipid metabolism affects hydrocephalus, although congenital malformations and infectious diseases are major causal factors for hydrocephalus development. In a study on the pathogenesis of atherogenesis in mice, we unexpectedly discovered that hydrocephalus occurred in partial apolipoptotein E (apoE) and low-density lipoprotein receptor (LDLR) double-knockout (apoE/LDLR) mice fed either chow or a high-fat and high-cholesterol diet between the ages of 4 and 12 weeks...
November 8, 2017: Neuroreport
https://www.readbyqxmd.com/read/28916633/systems-genetics-identifies-a-co-regulated-module-of-liver-micrornas-associated-with-plasma-ldl-cholesterol-in-murine-diet-induced-dyslipidemia
#12
Alisha R Coffey, Tangi L Smallwood, Jody Albright, Kunjie Hua, Matt Kanke, Daniel Pomp, Brian J Bennett, Praveen Sethupathy
Chronically altered levels of circulating lipids, termed dyslipidemia, is a significant risk factor for a number of metabolic and cardiovascular morbidities. MicroRNAs (miRNAs) have emerged as important regulators of lipid balance, have been implicated in dyslipidemia, and have been proposed as candidate therapeutic targets in lipid-related disorders including atherosclerosis. A major limitation of most murine studies of miRNAs in lipid metabolic disorders is that they have been performed in just one (or very few) inbred strains, such as C57BL/6...
September 15, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28910310/gugulipid-causes-hypercholesterolemia-leading-to-endothelial-dysfunction-increased-atherosclerosis-and-premature-death-by-ischemic-heart-disease-in-male-mice
#13
Andrea Leiva, Susana Contreras-Duarte, Ludwig Amigo, Esteban Sepúlveda, Mauricio Boric, Verónica Quiñones, Dolores Busso, Attilio Rigotti
For proper cholesterol metabolism, normal expression and function of scavenger receptor class B type I (SR-BI), a high-density lipoprotein (HDL) receptor, is required. Among the factors that regulate overall cholesterol homeostasis and HDL metabolism, the nuclear farnesoid X receptor plays an important role. Guggulsterone, a bioactive compound present in the natural product gugulipid, is an antagonist of this receptor. This natural product is widely used globally as a natural lipid-lowering agent, although its anti-atherogenic cardiovascular benefit in animal models or humans is unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28898910/balanced-coagonist-of-glp-1-and-glucagon-receptors-corrects-dyslipidemia-by-improving-fgf21-sensitivity-in-hamster-model
#14
Vishal Patel, Amit Joharapurkar, Samadhan Kshirsagar, Hiren M Patel, Dheerendra Pandey, Dipam Patel, Brijesh Sutariya, Maulik Patel, Rajesh Bahekar, Mukul R Jain
Hyperlipidemia is often associated with obesity and diabetes, and can lead to serious complications like atherosclerosis and fatty liver disease. Coagonist of GLP-1 and glucagon receptors is a therapy under clinical investigation for treatment of obesity and diabetes. In this study, we have characterized the mechanism of hypolipidemic effect of a balanced coagonist using high cholesterol-fed hamsters. Tyloxapol-induced hypertriglyceridemia, lipolysis in adipose tissue, and bile homeostasis were assessed after repeated dose treatment of the coagonist of GLP-1 and glucagon receptors (Aib2 C24 chimera 2, SC)...
September 12, 2017: Drug Research
https://www.readbyqxmd.com/read/28893253/a-novel-swine-model-for-evaluation-of-dyslipidemia-and-atherosclerosis-induced-by-human-cetp-overexpression
#15
Tao Chen, Meng Sun, Jia-Qiang Wang, Jin-Jin Cui, Zhong-Hua Liu, Bo Yu
BACKGROUND: The mechanism of cholesteryl ester transfer protein (CETP) in lipid metabolism is still unclear. Furthermore, the relationship of CETP and atherosclerosis (AS) has been controversial. As pigs are a good model for both lipid and AS research, we investigated the lipid metabolism of human CETP (hCETP) transgenic pigs and explored the mechanism of CETP in lipid modulation. METHODS: Plasmids expressing the hCETP gene were designed, successfully constructed, and transfected into porcine fetal fibroblasts by liposomes...
September 11, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28869506/critical-role-of-the-human-atp-binding-cassette-g1-transporter-in-cardiometabolic-diseases
#16
REVIEW
Lise M Hardy, Eric Frisdal, Wilfried Le Goff
ATP-binding cassette G1 (ABCG1) is a member of the large family of ABC transporters which are involved in the active transport of many amphiphilic and lipophilic molecules including lipids, drugs or endogenous metabolites. It is now well established that ABCG1 promotes the export of lipids, including cholesterol, phospholipids, sphingomyelin and oxysterols, and plays a key role in the maintenance of tissue lipid homeostasis. Although ABCG1 was initially proposed to mediate cholesterol efflux from macrophages and then to protect against atherosclerosis and cardiovascular diseases (CVD), it becomes now clear that ABCG1 exerts a larger spectrum of actions which are of major importance in cardiometabolic diseases (CMD)...
September 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28814963/effects-of-a-liquid-high-fat-meal-on-postprandial-lipid-metabolism-in-type-2-diabetic-patients-with-abdominal-obesity
#17
Feng Wang, Huixia Lu, Fukang Liu, Huizhen Cai, Zhixiu Song, Fei Guo, Yulan Xie, Guofang Shu, Guiju Sun
BACKGROUND: Postprandial lipemia and lipoprotein lipase (LPL) activity play crucial roles in the pathogenesis of accelerated atherosclerosis. This study aimed to evaluate the postprandial lipid metabolism after the ingestion of a liquid high-fat meal in type 2 diabetic patients with abdominal obesity, and determine if the PvuII polymorphisms of LPL influence their postprandial lipid responses. METHODS: Serum glucose, insulin, triglycerides (TG), total cholesterol (TC) and high density lipoprotein cholesterol (HDL-C) were measured in fasting and postprandial state at 0...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28812326/effect-of-dietary-components-from-antarctic-krill-on-atherosclerosis-in-apoe-deficient-mice
#18
Cinzia Parolini, Bodil Bjorndal, Marco Busnelli, Stefano Manzini, Giulia S Ganzetti, Federica Dellera, Marie Ramsvik, Inge Bruheim, Rolf Kristian Berge, Giulia Chiesa
SCOPE: Antarctic krill is a great source of n-3 fatty acids and high-quality proteins. Aim of the study was to evaluate the effect of Antarctic krill components on plasma lipids and atherosclerosis development. METHODS AND RESULTS: Sixty apoEKO mice were divided into four groups and fed Western diet (CONTROL) or Western-like diets, differing for protein or fat content. Specifically, casein or fat in CONTROL was partially replaced by krill proteins (PRO), krill oil (KRILL OIL), or both (KRILL OIL+PRO)...
August 15, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28808185/establishment-of-a-rat-model-with-diet-induced-coronary-atherosclerosis
#19
Mingming Gao, Guo Xin, Xu Qiu, Yuhui Wang, George Liu
Coronary atherosclerotic disease is a serious disease in humans, but no suitable animal model is available currently for further studies. We used apolipoprotein E gene knockout (ApoE KO) rats to induce hypercholesterolemia through a special high cholesterol/bile salt diet (Paigen diet), then analyzed aortic and coronary atherosclerosis lesions and the myocardial injury in order to establish a novel small animal model of coronary atherosclerosis. Plasma cholesterol of ApoE KO rats increased 7.6-fold compared with wild-type rats after 8 weeks on the Paigen diet...
October 17, 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28806974/association-of-plasma-fatty-acid-alteration-with-the-severity-of-coronary-artery-disease-lesions-in-tunisian-patients
#20
Samia Hadj Ahmed, Nadia Kaoubaa, Wafa Kharroubi, Amira Zarrouk, Mohamed Fadhel Najjar, Fathi Batbout, Habib Gamra, Gerard Lizard, Mohamed Hammami
BACKGROUND: Some factors related to diet are known to be involved in the progression of atherosclerosis in humans. METHODS: The relationship between plasma fatty acid (FA) levels and the severity of coronary artery disease (CAD), evaluated by Gensini score (GS), was investigated in CAD Tunisian patients compared to controls. Lipid profiles were analyzed, GS was calculated in CAD and non-CAD patients and compared to controls. RESULTS: CAD patients showed an alteration of conventional lipid parameters...
August 14, 2017: Lipids in Health and Disease
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