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Insulin and atherosclerosis

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https://www.readbyqxmd.com/read/29040868/identification-of-a-novel-proinsulin-associated-snp-and-demonstration-that-proinsulin-is-unlikely-to-be-a-causal-factor-in-subclinical-vascular-remodelling-using-mendelian-randomisation
#1
Rona J Strawbridge, Angela Silveira, Marcel den Hoed, Stefan Gustafsson, Jian'an Luan, Denis Rybin, Josée Dupuis, Ruifang Li-Gao, Maryam Kavousi, Abbas Dehghan, Kadri Haljas, Jari Lahti, Jesper R Gådin, Alexandra Bäcklund, Ulf de Faire, Karl Gertow, Phillipe Giral, Anuj Goel, Steve E Humphries, Sudhir Kurl, Claudia Langenberg, Lars L Lannfelt, Lars Lind, Cecilia C M Lindgren, Elmo Mannarino, Dennis O Mook-Kanamori, Andrew P Morris, Renée de Mutsert, Rainer Rauramaa, Peter Saliba-Gustafsson, Bengt Sennblad, Andries J Smit, Ann-Christine Syvänen, Elena Tremoli, Fabrizio Veglia, Björn Zethelius, Hanna M Björck, Johan G Eriksson, Albert Hofman, Oscar H Franco, Hugh Watkins, J Wouter Jukema, Jose C Florez, Nicholas J Wareham, James B Meigs, Erik Ingelsson, Damiano Baldassarre, Anders Hamsten
BACKGROUND AND AIMS: Increased proinsulin relative to insulin levels have been associated with subclinical atherosclerosis (measured by carotid intima-media thickness (cIMT)) and are predictive of future cardiovascular disease (CVD), independently of established risk factors. The mechanisms linking proinsulin to atherosclerosis and CVD are unclear. A genome-wide meta-analysis has identified nine loci associated with circulating proinsulin levels. Using proinsulin-associated SNPs, we set out to use a Mendelian randomisation approach to test the hypothesis that proinsulin plays a causal role in subclinical vascular remodelling...
September 28, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29040598/effect-of-metformin-on-vascular-function-in-children-with-type-1-diabetes-a-12-month-randomized-controlled-trial
#2
Jemma J A Anderson, Jennifer J Couper, Lynne C Giles, Catherine E Leggett, Roger Gent, Brian Coppin, Alexia S Peña
Context: Children with type 1 diabetes have vascular dysfunction preceding atherosclerosis. Early interventions are needed to reduce cardiovascular disease. Objective: To evaluate the effect of metformin on vascular function in type 1 diabetes children. Design: 12 month double blind, randomized, placebo-controlled trial. Setting: Tertiary pediatric diabetes clinic. Participants: 90 type 1 diabetes children(8-18 years), above 50th percentile body mass index (BMI)...
October 9, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29037962/mild-palmitate-treatment-increases-mitochondrial-mass-but-does-not-affect-ea-hy926-endothelial-cells-viability
#3
Dorota Dymkowska, Maria Kawalec, Tomasz Wyszomirski, Krzysztof Zabłocki
A dyslipidaemia-related increase of the concentration of long-chain fatty acids in the plasma is an important pathological factor substantially increasing risk of serious consequences in vascular endothelium. Inflammatory response, atherosclerosis and insulin resistance seem the most severe. Palmitate at excessive concentrations has been shown to have a harmful effect on endothelial cells impairing NO generation, stimulating reactive oxygen species (ROS) formation and affecting their viability. On the other hand we found that palmitate applied for 48 h at 100 μM concentration which is sufficient to induce inflammatory response, increase ROS generation and reduce insulin sensitivity of EA...
October 13, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29037197/human-epicardial-adipose-tissue-derived-and-circulating-secreted-frizzled-related-protein-4-sfrp4-levels-are-increased-in-patients-with-coronary-artery-disease
#4
Qingwei Ji, Jianwei Zhang, Yu Du, Enjun Zhu, Zhijian Wang, Bin Que, Huangtai Miao, Shutian Shi, Xiuchuan Qin, Yingxin Zhao, Yujie Zhou, Fangjun Huang, Shaoping Nie
BACKGROUND: Previous studies have demonstrated that secreted frizzled-related protein 4 (SFRP4) is associated with impaired glucose and triglyceride metabolism in patients with stable coronary artery disease. In the present study, we investigated human epicardial adipose tissue (EAT)-derived and circulating SFRP4 levels in patients with coronary artery disease (CAD). METHODS: Plasma samples and adipose biopsies from EAT and subcutaneous adipose tissue (SAT) were collected from patients with CAD (n = 40) and without CAD (non-CAD, n = 30) during elective cardiac surgery...
October 16, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29025405/the-anti-inflammatory-function-of-hdl-is-impaired-in-type-2-diabetes-role-of-hyperglycemia-paraoxonase-1-and-low-grade-inflammation
#5
Sanam Ebtehaj, Eke G Gruppen, Mojtaba Parvizi, Uwe J F Tietge, Robin P F Dullaart
BACKGROUND: Functional properties of high density lipoproteins (HDL) are increasingly recognized to play a physiological role in atheroprotection. Type 2 diabetes mellitus (T2DM) is characterized by low HDL cholesterol, but the effect of chronic hyperglycemia on the anti-inflammatory capacity of HDL, a metric of HDL function, is unclear. Therefore, the aim of the present study was to establish the impact of T2DM on the HDL anti-inflammatory capacity, taking paraoxonase-1 (PON-1) activity and low grade inflammation into account...
October 12, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29024702/polycystic-ovarian-syndrome-pcos-long-term-metabolic-consequences
#6
Panagiotis Anagnostis, Basil C Tarlatzis, Robert P Kauffman
Polycystic ovary syndrome (PCOS) is the most common endocrine disorder in women during their reproductive ages, associated with a plethora of cardiometabolic consequences, with obesity, insulin resistance and hyperandrogenemia playing a major role in the degree of such manifestations. These consequences include increased risk of glucose intolerance and diabetes mellitus (both type 2 and gestational), atherogenic dyslipidemia, systemic inflammation, non-alcoholic fatty liver disease, hypertension and coagulation disorders...
October 9, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29022053/glycated-albumin-ga-and-inflammation-role-of-ga-as-a-potential-marker-of-inflammation
#7
REVIEW
H Vernon Roohk, Asad R Zaidi, Dimple Patel
AIMS: Abnormal levels of glycated albumin (GA) are associated with the onset of both diabetes and inflammation. Although inflammation has long been associated with diabetes, this article aims to explore the underlying mechanisms of this relationship as it pertains to the role of GA. METHODS: We have reviewed 52 research articles since the year 2000. Common search terms used were "(inflammatory mediator) and GA" or "inflammation and GA". The findings have been organized according to diabetic complications with respect to the interactions of GA and inflammatory mediators...
October 11, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/29017449/circulating-adipocyte-fatty-acid-binding-protein-is-a-predictor-of-cardiovascular-events-in-patients-with-stable-angina-undergoing-percutaneous-coronary-intervention
#8
Wataru Takagi, Toru Miyoshi, Masayuki Doi, Keisuke Okawa, Kazumasa Nosaka, Tomoyuki Nishibe, Naoaki Matsuo, Satoshi Hirohata, Hiroshi Ito
BACKGROUND: Adipocyte fatty acid-binding protein (A-FABP) is expressed in both adipocytes and macrophages. Recent studies have shown that A-FABP is secreted by adipocytes and that the A-FABP concentration is associated with obesity, insulin resistance, and atherosclerosis. We have reported that the coronary atherosclerotic burden is associated with the serum A-FABP concentration. In the present study, we investigated whether the serum A-FABP concentration is associated with prognosis in patients with stable angina pectoris who have undergone percutaneous coronary intervention (PCI)...
October 10, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29017166/the-role-of-the-mineralocorticoid-receptor-in-inflammation-focus-on-kidney-and-vasculature
#9
Zachary Belden, Jeffrey A Deiuliis, Mirela Dobre, Sanjay Rajagopalan
BACKGROUND: The remarkable success of clinical trials in mineralocorticoid receptor (MR) inhibition in heart failure has driven research on the physiological and pathological role(s) of nonepithelial MR expression. MR is widely expressed in the cardiovascular system and is a major determinant of endothelial function, smooth muscle tone, vascular remodeling, fibrosis, and blood pressure. An important new dimension is the appreciation of the role MR plays in immune cells and target organ damage in the heart, kidney and vasculature, and in the development of insulin resistance...
October 10, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28990536/novel-insights-in-the-metabolic-syndrome-induced-oxidative-stress-and-inflammation-mediated-atherosclerosis
#10
Johnna F Varghese, Rohit Patel, Umesh C S Yadav
CONTEXT: Atherosclerosis is a progressive pathological process and a leading cause of mortality worldwide. Clinical research and epidemiological studies states that atherosclerosis is caused by an amalgamation of metabolic and inflammatory deregulation involving three important pathological events including endothelial dysfunction (ED), foam cell formation (FCF), and vascular smooth muscle cells (VSMCs) proliferation and migration. OBJECTIVES: Research in recent years has identified metabolic syndrome, which involves factors such as obesity, insulin resistance, dyslipidemia and diabetes, to be responsible for the pathophysiology of atherosclerosis...
October 9, 2017: Current Cardiology Reviews
https://www.readbyqxmd.com/read/28985493/kaempferol-alleviates-ox-ldl-induced-apoptosis-by-up-regulation-of-autophagy-via-inhibiting-pi3k-akt-mtor-pathway-in-human-endothelial-cells
#11
Jianbo Che, Bing Liang, Yuan Zhang, Yi Wang, Jianyu Tang, Gongning Shi
Oxidized low-density lipoprotein (ox-LDL) has been reported to induce apoptosis of endothelial cells (ECs) and contribute to the progression of atherosclerosis. Kaempferol has been shown to possess antiatherosclerotic effect. The aim of the present study was to evaluate the effect of kaempferol on ox-LDL-induced apoptosis of human umbilical vein endothelial cells (HUVECs) and its possible molecular basis. The results showed that kaempferol alleviated ox-LDL-induced apoptosis. Kaempferol increased the ratio of LC3-II/I and beclin-1 level in ox-LDL-induced HUVECs...
August 10, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/28972956/does-polycystic-ovary-syndrome-increase-the-risk-of-subclinical-vascular-disease-in-normal-weight-type-1-diabetic-women
#12
Agnieszka Łebkowska, Agnieszka Adamska, Małgorzata Jacewicz, Joanna Tołwińska, Anna Krentowska, Justyna Hryniewicka, Monika Leśniewska, Artur Bossowski, Maria Górska, Irina Kowalska
INTRODUCTION The prevalence of polycystic ovary syndrome (PCOS) among type 1 diabetic women (T1DM) is higher than in general population. Both diseases are associated with higher risk of premature atherosclerosis. OBJECTIVES The aim of our study was to evaluate whether the cardiovascular risks conferred by T1DM and PCOS are additive. PATIENTS AND METHODS The study group included seventy-eight women divided into 4 groups: 19 women with PCOS and T1DM (T1DM+PCOS), 16 women with T1DM only (T1DM/no-PCOS), 27 women with PCOS only (PCOS), and 16 healthy women (control group)...
September 30, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28970282/hyperlipidemia-induced-microrna-155-5p-improves-%C3%AE-cell-function-by-targeting-mafb
#13
Mengyu Zhu, Yuanyuan Wei, Claudia Geißler, Kathrin Abschlag, Judit Corbalán Campos, Michael Hristov, Julia Möllmann, Michael Lehrke, Ela Karshovska, Andreas Schober
A high-fat diet increases bacterial lipopolysaccharide (LPS) in the circulation, and thereby stimulates glucagon-like peptide-1 (GLP-1)-mediated insulin secretion by up-regulating interleukin (IL)-6. Although microRNA-155-5p (miR-155-5p), which increases IL-6 expression, is upregulated by LPS and hyperlipidemia, and patients with familial hypercholesterolemia less frequently develop diabetes, the role of miR-155-5p in the islet stress response to hyperlipidemia is unclear. Here, we demonstrate that hyperlipidemia-associated endotoxemia up-regulates miR-155-5p in murine pancreatic β-cells, which improved glucose metabolism and the adaptation of β-cells to obesity-induced insulin resistance...
September 29, 2017: Diabetes
https://www.readbyqxmd.com/read/28969085/interleukin-27-polymorphisms-are-associated-with-premature-coronary-artery-disease-and-metabolic-parameters-in-the-mexican-population-the-genetics-of-atherosclerotic-disease-gea-mexican-study
#14
Rosalinda Posadas-Sánchez, Nonanzit Pérez-Hernández, José Manuel Rodríguez-Pérez, Ramón M Coral-Vázquez, Bladimir Roque-Ramírez, Luis Llorente, Guadalupe Lima, Carmina Flores-Dominguez, Teresa Villarreal-Molina, Carlos Posadas-Romero, Gilberto Vargas-Alarcón
Several studies suggest an important role of Interleukin-27 in the development of atherosclerosis. The aim of this study was to establish whether the IL-27p28 gene polymorphisms are associated with premature coronary artery disease and/or other cardiovascular risk factors. Four IL-27p28 gene polymorphisms were selected and genotyped in 1162 premature coronary artery disease cases and 1107 controls. rs26528 T and rs40837 A alleles were significantly associated with a lower risk of premature coronary artery disease under different inheritance models (Pdominant = 0...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28966336/mechanism-of-development-of-atherosclerosis-and-cardiovascular-disease-in-diabetes-mellitus
#15
Naoto Katakami
Diabetic macroangiopathy, atherosclerosis secondary to diabetes mellitus (DM), causes cerebro-cardiovascular diseases, which are major causes of death in patients with DM and significantly reduce their quality of life. The alterations in vascular homeostasis due to endothelial and vascular smooth muscle cell dysfunction are the main features of diabetic macroangiopathy. Although multiple metabolic abnormalities that characterize diabetes are involved in the progression of atherosclerosis in patients with DM, it may be said that prolonged exposure to hyperglycemia and insulin resistance clustering with other risk factors such as obesity, arterial hypertension, and dyslipidemia play crucial roles...
September 29, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28966076/sleep-apnea-metabolic-disease-and-the-cutting-edge-of-therapy
#16
Matthew Light, Karen McCowen, Atul Malhotra, Omar A Mesarwi
Obstructive sleep apnea (OSA) is common, and many cross-sectional and longitudinal studies have established OSA as an independent risk factor for the development of a variety of adverse metabolic disease states, including hypertension, insulin resistance, type 2 diabetes, nonalcoholic fatty liver disease, dyslipidemia, and atherosclerosis. Nasal continuous positive airway pressure (CPAP) has long been the mainstay of therapy for OSA, but definitive studies demonstrating the efficacy of CPAP in improving metabolic outcomes, or in reducing incident disease burden, are lacking; moreover, CPAP has variable rates of adherence...
September 28, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28963100/meditation-and-cardiovascular-risk-reduction-a-scientific-statement-from-the-american-heart-association
#17
Glenn N Levine, Richard A Lange, C Noel Bairey-Merz, Richard J Davidson, Kenneth Jamerson, Puja K Mehta, Erin D Michos, Keith Norris, Indranill Basu Ray, Karen L Saban, Tina Shah, Richard Stein, Sidney C Smith
Despite numerous advances in the prevention and treatment of atherosclerosis, cardiovascular disease remains a leading cause of morbidity and mortality. Novel and inexpensive interventions that can contribute to the primary and secondary prevention of cardiovascular disease are of interest. Numerous studies have reported on the benefits of meditation. Meditation instruction and practice is widely accessible and inexpensive and may thus be a potential attractive cost-effective adjunct to more traditional medical therapies...
September 28, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28958751/insulin-therapy-increases-cardiovascular-risk-time-for-a-sea-of-change-in-type-2-diabetes-treatment
#18
REVIEW
Mary E Herman, James H O'Keefe, David S H Bell, Stanley S Schwartz
Insulin therapy increased cardiovascular (CV) risk and mortality among type 2 diabetes (T2D) patients in several recently reported clinical outcomes trials. To assess whether this association is causative or coincidental, PubMed searches were used to query the effects of insulin therapy for T2D on CV health and longevity from large-scale outcomes trials, meta-analyses, and patient registry studies, as well as basic research on insulin's direct and pleiotropic actions. Although several old studies provided conflicting results, the majority of large observational studies show strong dose-dependent associations for injected insulin with increased CV risk and worsened mortality...
September 25, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28956368/a-novel-index-using-soluble-cd36-is-associated-with-the-prevalence-of-type-2-diabetes-mellitus-comparison-study-with-triglyceride-glucose-index
#19
Ho Jin Kim, Jun Sung Moon, Il Rae Park, Joong Hee Kim, Ji Sung Yoon, Kyu Chang Won, Hyoung Woo Lee
BACKGROUND: Plasma soluble cluster determinant 36 (sCD36) level is closely related with insulin resistance and atherosclerosis, but little is known whether it could be a surrogate for estimating risk of developing diabetes or not. To address this, we evaluated association between sCD36 index, the product of sCD36 and fasting plasma glucose (FPG), and the prevalence of type 2 diabetes mellitus (T2DM), and then compared with triglyceride-glucose (TyG) index which has been suggested simple index for insulin resistance...
September 2017: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28951226/deletion-of-jnk2-prevents-vitamin-d-deficiency-induced-hypertension-and-atherosclerosis-in-mice
#20
Jisu Oh, Amy E Riek, Rong M Zhang, Samantha A S Williams, Isra Darwech, Carlos Bernal-Mizrachi
The c-Jun N-terminal kinase 2 (JNK2) signaling pathway contributes to inflammation and plays a key role in the development of obesity-induced insulin resistance and cardiovascular disease. Macrophages are key cells implicated in these metabolic abnormalities. Active vitamin D downregulates macrophage JNK activation, suppressing oxidized LDL cholesterol uptake and foam cell formation and promoting an anti-inflammatory phenotype. To determine whether deletion of JNK2 prevents high blood pressure and atherosclerosis known to be induced by vitamin D deficiency in mice, we generated mice with knockout of JNK2 in a background susceptible to diet-induced atherosclerosis (LDLR(-/-))...
September 23, 2017: Journal of Steroid Biochemistry and Molecular Biology
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