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Cholesterol controversy

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https://www.readbyqxmd.com/read/28920575/the-p2x7-receptor-forms-a-dye-permeable-pore-independent-of-its-intracellular-domain-but-dependent-on-membrane-lipid-composition
#1
Akira Karasawa, Kevin Michalski, Polina Mikhelzon, Toshimitsu Kawate
The P2X7 receptor mediates extracellular-ATP signaling implicated in the development of devastating diseases such as chronic pain and cancer. Activation of the P2X7 receptor leads to opening of the characteristic dye-permeable membrane pore for molecules up to ~900 Da. However, it remains controversial what constitutes this peculiar pore and how it opens. Here we show that the panda P2X7 receptor, when purified and reconstituted into liposomes, forms an intrinsic dye-permeable pore in the absence of other cellular components...
September 18, 2017: ELife
https://www.readbyqxmd.com/read/28916641/inflammation-and-atherosclerosis-the-end-of-a-controversy
#2
Göran K Hansson
Does inflammation matter in coronary artery disease? Is it a driving force in atherosclerosis, or merely an epiphenomenon? And is there space for novel therapies besides those targeting cholesterol? The CANTOS trial, which was presented at the European Society of Cardiology meeting in Barcelona a few weeks ago provides answers to these important questions. Indeed, the results of this trial open up a new avenue for cardiovascular prevention.
September 15, 2017: Circulation
https://www.readbyqxmd.com/read/28915687/features-and-risk-factors-of-carotid-atherosclerosis-in-a-population-with-high-stroke-incidence-in-china
#3
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...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28912655/chronic-eccentric-exercise-and-antioxidant-supplementation-effects-on-lipid-profile-and-insulin-sensitivity
#4
Christina Yfanti, Athanasios Tsiokanos, Ioannis G Fatouros, Anastasios A Theodorou, Chariklia K Deli, Yiannis Koutedakis, Athanasios Z Jamurtas
Eccentric exercise has been shown to exert beneficial effects in both lipid profile and insulin sensitivity. Antioxidant supplementation during chronic exercise is controversial as it may prevent the physiological training-induced adaptations. The aim of this study was to investigate: 1) the minimum duration of the eccentric exercise training required before changes on metabolic parameters are observed and 2) whether antioxidant supplementation during training would interfere with these adaptations. Sixteen young healthy men were randomized into the Vit group (1 g of vitamin C and 400 IU vitamin E daily) and the placebo (PL) group...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28893253/a-novel-swine-model-for-evaluation-of-dyslipidemia-and-atherosclerosis-induced-by-human-cetp-overexpression
#5
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/28866363/effects-of-apolipoprotein-m-in-uremic-atherosclerosis
#6
Markus Høybye Bosteen, Eva Martha Madsen Svarrer, Line Stattau Bisgaard, Torben Martinussen, Marie Madsen, Lars Bo Nielsen, Christina Christoffersen, Tanja Xenia Pedersen
BACKGROUND AND AIMS: Chronic kidney disease is characterized by uremia and causes premature death, partly due to accelerated atherosclerosis. Apolipoprotein (apo) M is a plasma carrier protein for the lipid sphingosine-1-phosphate (S1P). The Apom-S1P complex associates with HDL, and may contribute to its anti-atherosclerotic effects. The role of Apom/S1P in atherosclerosis is presently controversial and has not been explored in a uremic setting. We aimed to explore whether plasma concentrations of Apom/S1P are altered by uremia and whether Apom overexpression or deficiency affects classical and uremic atherosclerosis...
August 18, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28851362/inverse-associations-between-serum-levels-of-secreted-frizzled-related-protein-5-sfrp5-and-multiple-cardiometabolic-risk-factors-kora-f4-study
#7
Maren Carstensen-Kirberg, Julia M Kannenberg, Cornelia Huth, Christa Meisinger, Wolfgang Koenig, Margit Heier, Annette Peters, Wolfgang Rathmann, Michael Roden, Christian Herder, Barbara Thorand
AIMS: Secreted frizzled-related protein (Sfrp)5 has beneficial effects on insulin sensitivity, inflammation and cardiovascular risk in different mouse models, but its relevance for cardiometabolic diseases in humans is controversial. We aimed to characterise associations of circulating SFRP5 with cardiometabolic risk factors and prediabetes/type 2 diabetes in a large population-based cohort. METHODS: Cross-sectional associations between serum SFRP5 and cardiometabolic risk factors as well as prediabetes/type 2 diabetes were investigated in 1096 participants aged 62-81 years from the German KORA F4 study, of whom 666 had prediabetes or type 2 diabetes...
August 29, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28843914/the-association-between-low-level-of-high-density-lipoprotein-cholesterol-and-mood-disorder-using-time-dependent-analysis
#8
Seung Ju Kim, Kyu-Tae Han, Suk-Yong Jang, Eun-Cheol Park
BACKGROUND: Although many studies have identified factors associated with mood disorder, the association between high-density lipoprotein cholesterol (HDL-C) and mood disorder is still controversial. The aim of our study was to evaluate the association between low HDL-C and onset of mood disorder in Korea based on different cut-off levels. METHODS: We used National Health Examinations Service cohort data from 2009 to 2013. We used time-dependent Cox regression analysis to evaluate the association between low level of HDL-C and onset of mood disorder...
August 19, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28843238/assessment-of-the-prevalence-and-risk-factors-associated-with-glucocorticoid-induced-diabetes-mellitus-in-pemphigus-vulgaris-patients
#9
Abbas Darjani, Nahid Nickhah, Mohammad Hassan Hedayati Emami, Narges Alizadeh, Rana Rafiei, Hojat Eftekhari, Kaveh Gharaei Nejad
Pemphigus vulgaris is a chronic autoimmune disease and glucocorticoids are one of the main treatments. Our study investigates the prevalence and associated factors of glucocorticoid-induced diabetes mellitus in these patients under different glucocorticoid regimens. 36 patients with first diagnosed Pemphigus vulgaris based on pathological and direct immunofluorescence findings who had received different glucocorticoid regimens (1-2 mg/kg oral or 1-2 mg/kg oral with 1g methylprednisolone pulse daily for 3 consecutive days with or without azathioprine) were evaluated during 2014-2016...
June 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28841900/activation-of-pkc-triggers-rescue-of-npc1-patient-specific-ipsc-derived-glial-cells-from-gliosis
#10
Franziska Peter, Sebastian Rost, Arndt Rolfs, Moritz J Frech
BACKGROUND: Niemann-Pick disease Type C1 (NPC1) is a rare progressive neurodegenerative disorder caused by mutations in the NPC1 gene. The pathological mechanisms, underlying NPC1 are not yet completely understood. Especially the contribution of glial cells and gliosis to the progression of NPC1, are controversially discussed. As an analysis of affected cells is unfeasible in NPC1-patients, we recently developed an in vitro model system, based on cells derived from NPC1-patient specific iPSCs...
August 25, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28838227/aromatase-inhibitor-use-is-a-risk-factor-of-carotid-plaque-presence-in-endocrine-responsive-breast-cancer-patients
#11
Da Hea Seo, Yongin Cho, Sujin Lee, Seho Park, Seung-Il Kim, Byeong Woo Park, Yumie Rhee
Background/Aims: The aromatase inhibitors (AIs) are well known anti-hormonal therapy in endocrine-responsive breast cancer patients. It can lead to dyslipidemia and be the risk factor of cardiovascular disease due to low estrogen level. However, some recent studies comparing AIs with placebo have shown controversial results. The aim of this study was to investigate lipid profiles, measurement of carotid intima-media thickness (IMT) and the presence of plaque among endocrine-responsive breast cancer treated with AIs compared to ones that were not treated with AIs...
August 25, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28802304/coffee-consumption-and-coronary-heart-disease-risk-using-the-framingham-risk-score
#12
Hye-Mi Noh, Yong Soon Park, Jeong-Hyeon Kim
BACKGROUND AND OBJECTIVES: Although concerns regarding the influence of coffee consumption on human health have accompanied the massive increase in coffee consumption, the effects of coffee intake on the risk for coronary heart disease (CHD) remain controversial. Therefore, we evaluated the association between coffee consumption and CHD risk as estimated using the Framingham risk model in Korean adults. METHODS AND STUDY DESIGN: This cross-sectional study involved 3,987 participants aged 30-74 years who participated in the fifth Korea National Health and Nutrition Examination Survey conducted in 2010...
2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28795686/hdl-and-atherosclerotic-cardiovascular-disease-genetic-insights-into-complex-biology
#13
REVIEW
Robert S Rosenson, H Bryan Brewer, Philip J Barter, Johan L M Björkegren, M John Chapman, Daniel Gaudet, Daniel Seung Kim, Eric Niesor, Kerry-Anne Rye, Frank M Sacks, Jean-Claude Tardif, Robert A Hegele
Plasma levels of HDL cholesterol (HDL-C) predict the risk of cardiovascular disease at the epidemiological level, but a direct causal role for HDL in cardiovascular disease remains controversial. Studies in animal models and humans with rare monogenic disorders link only particular HDL-associated mechanisms with causality, including those mechanisms related to particle functionality rather than cholesterol content. Mendelian randomization studies indicate that most genetic variants that affect a range of pathways that increase plasma HDL-C levels are not usually associated with reduced risk of cardiovascular disease, with some exceptions, such as cholesteryl ester transfer protein variants...
August 10, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28795337/the-reverse-metabolic-syndrome-in-the-elderly-is-it-a-catabolic-syndrome
#14
REVIEW
Francesco Curcio, Giuseppe Sasso, Ilaria Liguori, Gaetana Ferro, Gennaro Russo, Michele Cellurale, David Della-Morte, Gaetano Gargiulo, Gianluca Testa, Francesco Cacciatore, Domenico Bonaduce, Pasquale Abete
Traditional risk factors of cardiovascular death in the general population, including body mass index (BMI), serum cholesterol, and blood pressure are also found to relate to outcomes in the geriatric population, but in a differing direction. A higher body mass index, hypercholesterolemia and hypertension are not harmful but even permit better survival at advancing age. This phenomenon is called "reverse epidemiology" or "risk factor paradox" and is also detected in a variety of chronic disease states such as chronic heart failure...
August 9, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28794636/helicobacter-pylori-infection-and-severity-of-coronary-atherosclerosis-in-patients-with-chronic-coronary-artery-disease
#15
Anita Jukic, Dorotea Bozic, Dusko Kardum, Tina Becic, Bruno Luksic, Mislav Vrsalovic, Marko Ljubkovic, Damir Fabijanic
AIM: Controversy exists concerning the relation between Helicobacter pylori (HP) infection and coronary artery disease (CAD). We aimed to examine the relationship between HP infection and severity of coronary atherosclerosis in patients with chronic CAD. PATIENTS AND METHODS: A total of 150 patients (109 [73%] men; mean age 62.61±10.23 years) scheduled for coronary artery bypass grafting surgery were consecutively enrolled in the cross-sectional study. According to rapid urease test and/or gastric biopsy samples stained with hematoxylin and eosin and according to Giemsa, patients were classified as HP positive (n=87; 58%) or HP negative (n=63; 42%)...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28790836/evaluation-of-coronary-calcium-score-in-patients-with-normocalcemic-primary-hyperparathyroidism
#16
Patrícia Nunes Mesquita, Ana Paula Dornelas Leão Leite, Stella das Chagas Crisóstomo, Enio Veras Filho, Lucas da Cunha Xavier, Francisco Bandeira
RATIONALE: Given that the diagnosis of primary hyperparathyroidism (PHPT) is given at an increasingly less-symptomatic phase, and the literature data on the cardiovascular risk of patients with normocalcemic primary hyperparathyroidism (NPHPT) are controversial, the coronary calcium score (CCS), which is correlated with coronary artery disease, may be useful for clarifying the association between cardiovascular risk and NPHPT. OBJECTIVE: This research aims to describe the CCS and the clinical and laboratory variables of patients with NPHPT compared with a control group and to verify the presence of an association between NPHPT and CCS...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/28769070/il6r-haplotype-rs4845625-t-rs4537545-c-is-a-risk-factor-for-simultaneously-high-crp-ldl-and-apob-levels
#17
A A Arguinano, E Naderi, N C Ndiaye, M Stathopoulou, S Dadé, B Alizadeh, S Visvikis-Siest
Interleukin 6 receptor (IL-6R), mediating IL-6's biological functions, plays an important role in different diseases such as diabetes, obesity and cardio-vascular diseases. In this study, we investigated the effects of two single nucleotide polymorphisms (SNPs), within the IL-6R loci, previously associated with C-reactive protein (CRP) and coronary heart diseases risk, and with controversial effects on lipids traits: SNP rs4845625 and SNP rs4537545. The results showed that both investigated SNPs were antagonistically related with CRP levels; the minor rs4845625*T allele was associated with increased CRP levels (P-value=0...
August 3, 2017: Genes and Immunity
https://www.readbyqxmd.com/read/28743061/circulating-ctrp9-levels-are-increased-in-patients-with-newly-diagnosed-type-2-diabetes-and-correlated-with-insulin-resistance
#18
Yanjun Jia, Xiaohe Luo, Ying Ji, Jingwen Xie, Han Jiang, Mao Fu, Xiaoqiang Li
AIMS: C1q/TNF-related protein-9 (CTRP9) is a novel adipokine that has been shown to promote lipid metabolism, enhance insulin sensitivity and protect against cardiovascular disease. However, previous studies in humans have produced controversial results regarding the association between CTRP9 and insulin resistance. The objective of this study was to evaluate the relationships between CTRP9 and insulin resistance in Chinese population. METHODS: Subjects with normal glucose tolerance (NGT, n=108), impaired glucose tolerance (IGT, n=92), and newly diagnosed type 2 diabetes mellitus (nT2DM, n=106) were recruited to determining the circulating CTRP9 and adiponectin levels by enzyme linked immunosorbent assay...
July 8, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28726527/the-comparison-and-estimation-of-the-prognostic-value-of-lipid-profiles-in-patients-with-prostate-cancer-depends-on-cancer-stage-advancement
#19
Edyta Idalia Wolny-Rokicka, Andrzej Tukiendorf, Jerzy Wydmański, Agnieszka Zembroń-Łacny
Lipid profiles and prostate cancer have a controversial relationship, and the predictive ability of lipids in determining cancer risk estimation is still questionable. This study demonstrates a significance assessment of the plasma lipid profiles of subjects with prostate cancer. Locoregional subjects irradiated with external beam therapy were compared to prostate cancer subjects with bone metastases. The histopathologic diagnosis of 103 subjects (71 locoregional [Group 1] and 32 palliative [Group 2]) were analyzed and compared using their blood samples, total cholesterol (CHL), triglycerides (TG), high-density lipoprotein (HDL) cholesterol, and low-density lipoprotein (LDL) cholesterol...
July 1, 2017: American Journal of Men's Health
https://www.readbyqxmd.com/read/28703031/lower-circulating-migration-inhibitory-factor-protein-is-associated-with-metabolic-syndrome-and-diabetes
#20
Altan Onat, Evin Ademoğlu, Günay Can, Neslihan Çoban, Ayşem Kaya, Hüsniye Yüksel
AIM: The controversial relationship between macrophage migration inhibitory factor (MIF) and the likelihood of cardiometabolic diseases was investigated. Results/methodology: Assayed MIF protein from 1225 adults was cross-sectionally analyzed. MIF was independently inversely associated with age, total testosterone and positively with high-density lipoprotein-cholesterol. In men MIF correlation with age, testosterone and waist circumference converted from inverse in the upper to positive in the bottom MIF third...
July 2017: Biomarkers in Medicine
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