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Cholesterol controversy

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https://www.readbyqxmd.com/read/28442766/nanoscale-membrane-domain-formation-driven-by-cholesterol
#1
Matti Javanainen, Hector Martinez-Seara, Ilpo Vattulainen
Biological membranes generate specific functions through compartmentalized regions such as cholesterol-enriched membrane nanodomains that host selected proteins. Despite the biological significance of nanodomains, details on their structure remain elusive. They cannot be observed via microscopic experimental techniques due to their small size, yet there is also a lack of atomistic simulation models able to describe spontaneous nanodomain formation in sufficiently simple but biologically relevant complex membranes...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28430614/features-and-risk-factors-of-carotid-atherosclerosis-in-a-population-with-high-stroke-incidence-in-china
#2
Yanqiu Zhang, Lingling Bai, Min Shi, Hongyan Lu, Yanan Wu, Jun Tu, Jingxian Ni, Jinghua Wang, Li Cao, Ping Lei, Xianjia Ning
Epidemiological studies have reported associations between traditional cardiovascular risk factors and carotid intima-media thickness (CIMT) or carotid plaque. However, definite risk factors at different phases of carotid atherosclerosis remain controversial. We aimed to explore risk factors and characteristics of carotid atherosclerosis at different stages in a low-income population with a high incidence of stroke in China. Between April 2014 and January 2015, we recruited 3789 stroke-free and cardiovascular disease-free residents aged ≥ 45 years...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28428219/deficiency-of-cholesteryl-ester-transfer-protein-protects-against-atherosclerosis-in-rabbits
#3
Jifeng Zhang, Manabu Niimi, Dongshan Yang, Jingyan Liang, Jie Xu, Tokuhide Kimura, Anna V Mattew, Yanhong Guo, Yanbo Fan, Tianqing Zhu, Jun Song, Rose Ackermann, Yui Koike, Anna Schwendeman, Liangxue Lai, Subramaniam Pennathur, Minerva Garcia-Barrio, Jianglin Fan, Y Eugene Chen
OBJECTIVE: CETP (cholesteryl ester transfer protein) plays an important role in lipoprotein metabolism; however, whether inhibition of CETP activity can prevent cardiovascular disease remains controversial. APPROACH AND RESULTS: We generated CETP knockout (KO) rabbits by zinc finger nuclease gene editing and compared their susceptibility to cholesterol diet-induced atherosclerosis to that of wild-type (WT) rabbits. On a chow diet, KO rabbits showed higher plasma levels of high-density lipoprotein (HDL) cholesterol than WT controls, and HDL particles of KO rabbits were essentially rich in apolipoprotein AI and apolipoprotein E contents...
April 20, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28421729/effects-of-tnf-%C3%AE-inhibitors-in-patients-with-psoriasis-and-metabolic-syndrome-a-preliminary-study
#4
Giulia Merlo, Emanuele Cozzani, Martina Burlando, Stefano Calvieri, Concetta Potenza, Luca Stingeni, Giorgio Filosa, Monica Pau, Marco Simonacci, Marzia Caproni, Aurora Parodi
BACKGROUND: Psoriasis is an inflammatory disease, that is increasingly being considered as a systemic disorder. Among associated comorbidities, metabolic syndrome plays an important role. The effects of biological therapies on metabolic syndrome is controversial. METHODS: Thirty-one psoriatic patients with metabolic syndrome, eligible to treatment with anti-TNFα agents, were enrolled. Metabolic parameters were measured during 4 subsequent visits, one every 40 to 60 days...
April 19, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
https://www.readbyqxmd.com/read/28419968/current-insights-into-pathogenesis-of-parkinson-s-disease-approach-to-mevalonate-pathway-and-protective-role-of-statins
#5
REVIEW
Seyed Soheil Saeedi Saravi, Seyed Sobhan Saeedi Saravi, Katayoun Khoshbin, Ahmad Reza Dehpour
Although Parkinson's disease (PD) is considered as the second most common life threatening age-related neurodegenerative disorder, but the underlying mechanisms for pathogenesis of PD are remained to be fully found. However, a complex relationship between genetic and environmental predisposing factors are involved in progression of PD. Dopaminergic neuronal cell death caused by mutations and accumulation of α-synuclein in Lewy bodies and neurites was suggested as the main strategy for PD, but current studies have paid attention to the role of mevalonate pathway in incidence of neurodegenerative diseases including PD...
April 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28395986/a-decade-of-progress-on-the-genetic-basis-of-coronary-artery-disease-practical-insights-for-the-internist
#6
REVIEW
Domenico Girelli, Chiara Piubelli, Nicola Martinelli, Roberto Corrocher, Oliviero Olivieri
Clinicians are well aware of the importance of a positive family history for coronary artery disease (CAD). Nonetheless, elucidation of the genetic basis of CAD has long proven difficult. The scenario changed in the last decade through the application of modern genomic technologies, like genome-wide association studies (GWAS) and next generation sequencing (NGS). GWAS have discovered over 60 common variants highly associated with CAD. For predictive purposes, such variants have been used to build up Genetic Risk Scores (GRSs), but their incorporation into classical prediction models does not appear substantially outperform the simple addition of family history...
April 7, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28394643/metabolic-effects-of-aspartame-in-adulthood-a-systematic-review-and-meta-analysis-of-randomized-clinical-trials
#7
Natalia Cardoso Santos, Laiza Magalhaes de Araujo, Graziela De Luca Canto, Eliete Neves Silva Guerra, Michella Soares Coelho, Maria de Fatima Borin
BACKGROUND: Data about harms or benefits associated with the consumption of aspartame, a non-nutritive sweetener worldwide consumed, is still controversial. This systematic review and meta-analysis of randomized controlled clinical trials aimed to assess the effect of aspartame consumption on metabolic parameters related to diabetes and obesity. METHODS: The search was performed on Cochrane, LILACS, PubMed, SCOPUS, Web of Science databases and on a grey literature using Open Grey, Google Scholar and ProQuest Dissertations & Theses Global...
April 10, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28391910/the-effect-of-dietary-protein-source-on-serum-lipids-secondary-data-analysis-from-a-randomized-clinical-trial
#8
Anda R Gonciulea, Deborah E Sellmeyer
BACKGROUND: Plant-based diets can lower serum lipids. Whether soy foods offer additional benefits remains controversial. OBJECTIVE: To determine the effect of different protein sources on serum lipids and glucose metabolism, emphasizing comparisons between soy and nonsoy plant-based diets. METHODS: Secondary data analysis. A total of 173 postmenopausal women were randomized to 1 of 4 weighed metabolic diets for 6 weeks. Diets were equivalent in energy, protein, and fat with at least 80% of protein from either nondairy animal, dairy, nonsoy plant, or soy foods...
January 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28391880/kefir-drink-causes-a-significant-yet-similar-improvement-in-serum-lipid-profile-compared-with-low-fat-milk-in-a-dairy-rich-diet-in-overweight-or-obese-premenopausal-women-a-randomized-controlled-trial
#9
Yasamin Fathi, Naeimeh Ghodrati, Mohammad-Javad Zibaeenezhad, Shiva Faghih
BACKGROUND: Controversy exists as to whether the lipid-lowering properties of kefir drink (a fermented probiotic dairy product) in animal models could be replicated in humans. OBJECTIVE: To assess and compare the potential lipid-lowering effects of kefir drink with low-fat milk in a dairy-rich diet in overweight or obese premenopausal women. METHODS: In this 8-week, single-center, multiarm, parallel-group, outpatient, randomized controlled trial, 75 eligible Iranian women aged 25 to 45 years were randomly allocated to kefir, milk, or control groups...
January 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28390853/familial-hypercholesterolemia-in-childhood-and-adolescents-a-hidden-reality
#10
Núria Plana, Cèlia Rodríguez-Borjabad, Daiana Ibarretxe, Lluís Masana
Familial hypercholesterolemia (FH) is the most common genetic disorder in childhood, but in most cases is not detected. High levels of low-density lipoprotein cholesterol are present since the child's birth and this fact will suppose silent development of early atherosclerosis. In cases of homozygous FH, the coronary disease will appear before 20s and in cases of heterozygous FH will occur in middle age. Despite published data, there is not agreement about how and when perform the screening. Familial history of early cardiovascular disease plus presence of hypercholesterolemia in parents is crucial for detection and diagnosis...
April 5, 2017: Clínica e Investigación en Arteriosclerosis
https://www.readbyqxmd.com/read/28384120/dyslipidemia-in-subclinical-hypothyroidism-requires-assessment-of-small-dense-low-density-lipoprotein-cholesterol-sdldl-c
#11
Maida Seferovic Saric, Miljenka-Jelena Jurasic, Slavica Sovic, Bojana Kranjcec, Tatjana Glivetic, Vida Demarin
BACKGROUND: Usually both hypothyroidism and hyperthyroidism are related to the cardiovascular and cerebrovascular disease development. The relationship between subclinical hypothyroidism has been widely investigated but the findings remain controversial. The aim of the present study was to evaluate the lipid profile in patients with subclinical hypothyroidism (SHypo) in comparison to controls and to determine the association of SHypo and dyslipidemia in attempt to find importance of small dense low-density lipoprotein cholesterol (sdLDL-C) in atherosclerosis...
April 6, 2017: Romanian Journal of Internal Medicine, Revue Roumaine de Médecine Interne
https://www.readbyqxmd.com/read/28373989/inverse-relationship-between-serum-vegf-levels-and-late-in-stent-restenosis-of-drug-eluting-stents
#12
Jiasheng Yin, Li Shen, Meng Ji, Yizhe Wu, Sishi Cai, Jiahui Chen, Zhifeng Yao, Junbo Ge
Late in-stent restenosis (ISR) has raised concerns regarding the long-term efficacy of drug-eluting stents (DES). The role of vascular endothelial growth factor (VEGF) in the pathological process of ISR is controversial. This retrospective study aimed to investigate the relationship between serum VEGF levels and late ISR in patients with DES implantation. A total of 158 patients who underwent angiography follow-up beyond 1 year after intervention were included. The study population was classified into ISR and non-ISR groups...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28345266/cross-sectional-study-of-equol-producer-status-and-cognitive-impairment-in-older-adults
#13
Michiya Igase, Keiji Igase, Yasuharu Tabara, Yasumasa Ohyagi, Katsuhiko Kohara
AIM: It is well known that consumption of isoflavones reduces the risk of cardiovascular disease. However, the effectiveness of isoflavones in preventing dementia is controversial. A number of intervention studies have produced conflicting results. One possible reason is that the ability to produce equol, a metabolite of a soy isoflavone, differs greatly in individuals. In addition to existing data, we sought to confirm whether an apparent beneficial effect in cognitive function is observed after soy consumption in equol producers compared with non-producers...
March 27, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28335422/association-between-coffee-consumption-and-its-polyphenols-with-cardiovascular-risk-factors-a-population-based-study
#14
Andreia Machado Miranda, Josiane Steluti, Regina Mara Fisberg, Dirce Maria Marchioni
Epidemiological studies have examined the effect of coffee intake on cardiovascular disease, but the benefits and risks for the cardiovascular system remain controversial. Our objective was to evaluate the association between coffee consumption and its polyphenols on cardiovascular risk factors. Data came from the "Health Survey of São Paulo (ISA-Capital)" among 557 individuals, in São Paulo, Brazil. Diet was assessed by two 24-h dietary recalls. Coffee consumption was categorized into <1, 1-3, and ≥3 cups/day...
March 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28332619/retinol-binding-protein-4-levels-and-non-alcoholic-fatty-liver-disease-a-community-based-cross-sectional-study
#15
Xuechen Chen, Tianran Shen, Qing Li, Xu Chen, Yanping Li, Dan Li, Gengdong Chen, Wenhua Ling, Yu-Ming Chen
Previous reports on the association between retinol binding protein 4 (RBP4) and nonalcoholic fatty liver disease (NAFLD) were controversial. This study aimed to investigate the association between the serum RBP4 levels and occurrence of NAFLD in Chinese population. In total, 2938 participants aged 40-75 years were involved in this community-based cross-sectional study. General information, lifestyle factors, serum levels of RBP4 and the presence of NAFLD were determined. Patients with NAFLD had significantly higher concentrations of RBP4 (37...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302959/natural-history-of-mild-subclinical-hypothyroidism-in-a-middle-aged-and-elderly-chinese-population-a-prospective-study
#16
Xiang Li, Donghu Zhen, Meng Zhao, Lu Liu, Qingbo Guan, Haiqing Zhang, Shujian Ge, Xulei Tang, Ling Gao
Subclinical hypothyroidism (SCH) has a high global prevalence. Most SCH patients have mild cases (thyrotropin ≤10 mIU/L). Treatment recommendations for mild SCH are controversial, which raises concerns about the natural history of mild SCH. We aimed to clarify the natural history of mild SCH. This is a prospective population-based study. We measured thyroid function in 11,000 participants in the REACTION study and followed 505 newly diagnosed mild SCH patients aged 40-years or older between 2011 and 2014...
March 7, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28300080/hypertriglyceridaemia-and-risk-of-coronary-artery-disease
#17
REVIEW
Željko Reiner
An elevated serum level of LDL cholesterol is a well-known risk factor for cardiovascular disease (CVD), but the role of elevated triglyceride levels is debated. Controversies regarding hypertriglyceridaemia as an independent risk factor for CVD have occurred partly because elevated triglyceride levels are often a component of atherogenic dyslipidaemia - they are associated with decreased levels of HDL cholesterol and increased levels of small dense LDL particles, which are highly atherogenic. Findings from several large studies indicate that elevated levels of triglycerides (either fasting or nonfasting) or, more specifically, triglyceride-rich lipoproteins and their remnants, are independently associated with increased risk of CVD...
March 16, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28262189/hypercholesterolemia-as-a-risk-factor-for-cardiovascular-disease-current-controversial-therapeutic-management
#18
REVIEW
Arturo Zárate, Leticia Manuel-Apolinar, Renata Saucedo, Marcelino Hernández-Valencia, Lourdes Basurto
Cholesterol is a precursor of steroid hormones and an essential component of the cell membrane; however, altered regulation of the synthesis, absorption and excretion of cholesterol predispose to cardiovascular diseases of atherosclerotic origin. Despite the recognition of historical events for 200 years starting with Chevreul naming "cholesterine"; later on, Lobstein coining the term atherosclerosis and Marchand introducing it, Anichkov identifying cholesterol in atheromatous plaque, and Brown and Goldstein discovering LDL receptor (r-LDL), as well as the emergence of different drugs such as fibrates, statins and cetrapibs during this decade promising to increase HDL, and the most recent, ezetimibe and anti-PCSK9 to inhibit the degradation of r-LDL, morbidity has not been reduced in cardiovascular disease...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28251937/comparison-of-the-impact-of-sfas-from-cheese-and-butter-on-cardiometabolic-risk-factors-a-randomized-controlled-trial
#19
Didier Brassard, Maude Tessier-Grenier, Janie Allaire, Ethendhar Rajendiran, Yongbo She, Vanu Ramprasath, Iris Gigleux, Denis Talbot, Emile Levy, Angelo Tremblay, Peter Jh Jones, Patrick Couture, Benoît Lamarche
Background: Controversies persist concerning the association between intake of dietary saturated fatty acids (SFAs) and cardiovascular disease risk.Objective: We compared the impact of consuming equal amounts of SFAs from cheese and butter on cardiometabolic risk factors.Design: In a multicenter, crossover, randomized controlled trial, 92 men and women with abdominal obesity and relatively low HDL-cholesterol concentrations were assigned to sequences of 5 predetermined isoenergetic diets of 4 wk each separated by 4-wk washouts: 2 diets rich in SFAs (12...
March 1, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28238234/markers-of-lipid-metabolism-do-not-correlate-with-the-expression-of-aortopathy-in-patients-with-bicuspid-aortic-valve-disease
#20
Tatiana M Sequeira Gross, Thomas Kuntze, Alexander Bernhardt, Hermann Reichenspurner, Yskert von Kodolitsch, Evaldas Girdauskas
BACKGROUND: Controversy exists regarding the potential effects of lipid metabolism on the expression of proximal aortopathy. The study aim was to compare the association between markers of lipid metabolism and the expression of proximal aortopathy in patients with either bicuspid aortic valve (BAV) or tricuspid aortic valve (TAV) disease. METHODS: A total of 458 consecutive patients (68% males) underwent aortic valve replacement (AVR) with or without concomitant aortic surgery between January 2008 and December 2014 at the authors' institution...
September 2016: Journal of Heart Valve Disease
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