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Insulin and atherosclerosis

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https://www.readbyqxmd.com/read/28225990/visceral-adiposity-index-and-triglyceride-high-density-lipoprotein-cholesterol-ratio-in-hypogonadism
#1
Cem Haymana, Alper Sonmez, Aydogan Aydogdu, Serkan Tapan, Yalcin Basaran, Coskun Meric, Kamil Baskoy, Mustafa Dinc, Mahmut Yazici, Abdullah Taslipinar, Cem Barcin, Mahmut Ilker Yilmaz, Erol Bolu, Omer Azal
Background: Cardiometabolic risk is high in patients with hypogonadism. Visceral adiposity index (VAI) and triglyceride/high-density lipoprotein cholesterol (TG/HDL-C) ratio are the practical markers of atherosclerosis and insulin resistance and independent predictors of cardiaovascular risk. To date, no study has evaluated VAI levels and TG/HDL-C ratio in hypogonadism. Subjects and methods: A total of 112 patients with congenital hypogonadotrophic hypogonadism (CHH) (mean age, 21...
February 13, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28225861/predictors-of-subclinical-atherosclerosis-evaluated-by-carotid-intima-media-thickness-in-asymptomatic-young-women-with-type-1-diabetes-mellitus
#2
Rosane Kupfer, Manuella Rangel Larrúbia, Isabela Bussade, Joana Rodrigues Dantas Pereira, Giovanna A Balarini Lima, Marcio Antonio Epifanio, Claudio Domenico Sahione Schettino, Denise Prado Momesso
Objective: This study aimed to evaluate the occurrence and clinical predictors of subclinical atherosclerosis in asymptomatic, young adult women with type 1 DM. Subjects and methods: The study included 45 women with type 1 diabetes mellitus (DM) (aged 36 ± 9 years) who underwent carotid Doppler ultrasound evaluation to determine the carotid artery intima-media thickness (CIMT) and to assess the occurrence of carotid artery plaques. Insulin sensitivity was assessed by estimated glucose disposal rate (eGDR), and metabolic syndrome (MS) was defined by the World Health Organization criteria...
February 16, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28208842/assessment-of-serum-vaspin-levels-among-type-2-diabetes-mellitus-patients-with-or-without-acute-coronary-syndrome
#3
Aswathy Jaya Sathyaseelan, Prashant Shankarrao Adole, Mukta Wyawahare, Rama Prakasha Saya
INTRODUCTION: Type 2 Diabetes Mellitus (DM) is on the verge of becoming a pandemic in India. Type 2 DM patient have two to four times increased risk of carotid artery disease. Adipokines have been regarded recently as direct link between diabetes and atherosclerosis. Visceral Adipose Tissue Derived Serine Protease Inhibitor (VASPIN); one of the most recently discovered adipokine, inhibits the proteases responsible for insulin resistance, carotid plaque development and rupture. In literature, few studies have addressed the role of VASPIN in pathogenesis of Acute Coronary Syndrome (ACS) in patients with type 2 DM...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28192887/linking-resistin-inflammation-and-cardiometabolic-diseases
#4
Hyeong Kyu Park, Mi Kyung Kwak, Hye Jeong Kim, Rexford S Ahima
Adipose tissue secretes a variety of bioactive substances that are associated with chronic inflammation, insulin resistance, and an increased risk of type 2 diabetes mellitus. While resistin was first known as an adipocyte-secreted hormone (adipokine) linked to obesity and insulin resistance in rodents, it is predominantly expressed and secreted by macrophages in humans. Epidemiological and genetic studies indicate that increased resistin levels are associated with the development of insulin resistance, diabetes, and cardiovascular disease...
February 16, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/28188070/-inflammation-in-the-perivascular-adipose-tissue-and-atherosclerosis
#5
Nadjiba Hamlat-Khennaf, Samia Neggazi, Hanene Ayari, Patrick Feugier, Giampiero Bricca, Souhila Aouichat-Bouguerra, Michel Beylot
In atherosclerosis studies, there are few data, especially in men, on the biology of perivascular adipose tissue (PVAT) compared to that of other adipose tissue (AT), on amendments in obesity, and its possible role in the development of atherosclerosis. We conducted an ex vivo human study on pericarotid adipose tissue-collected in the immediate vicinity (PVATp) and away from the plate (tapas)-and subcutaneous (SC) neck gathered during surgery from patients suffering from atheromatous carotid disease. In addition, we conducted a study in obese Zucker rats (models of obesity and insulin resistance) and Wistar rats subjected to moderate stress...
February 7, 2017: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/28178313/association-between-hba1c-and-carotid-atherosclerosis-among-elderly-koreans-with-normal-fasting-glucose
#6
Seung Won Lee, Hyeon Chang Kim, Yong-Ho Lee, Bo Mi Song, Hansol Choi, Ji Hye Park, Yumie Rhee, Chang Oh Kim
AIM: We examined whether glycated haemoglobin (HbA1c) is associated to carotid atherosclerosis in an elderly Korean population with normal fasting glucose. METHODS: Using data from the Korean Urban Rural Elderly study, we conducted a cross-sectional analysis of 1,133 participants (335 men and 798 women) with a mean age of 71.8 years. All participants had fasting blood glucose less than 100mg/dL (5.6 mmol/L) and HbA1c level below 6.5% (48 mmol/mol). They were also free from a history of cardiovascular disease, known type 2 diabetes mellitus or use of anti-diabetes medications...
2017: PloS One
https://www.readbyqxmd.com/read/28164885/a-study-of-the-association-of-acanthosis-nigricans-with-subclinical-atherosclerosis
#7
Elizabeth Guevara-Gutiérrez, Alberto Tlacuilo-Parra, Pedro Gutiérrez-Fajardo, Tania Sánchez-Tenorio, Fernando Barba-Gómez, Alejandra Miranda-Díaz
BACKGROUND: Hyperinsulinism is related to the presence of acanthosis nigricans and atherosclerosis; however, we were unable to find any study on the prevalence of atherosclerosis in acanthosis nigricans. AIMS: To evaluate the prevalence of carotid atherosclerosis and metabolic alterations in Mexican patients with acanthosis nigricans. METHODS: We carried out a cross-sectional study that included 45 patients with acanthosis nigricans, age- and gender-matched with 45 healthy participants...
March 2017: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/28161804/tryptophan-depletion-under-conditions-that-imitate-insulin-resistance-enhances-fatty-acid-oxidation-and-induces-endothelial-dysfunction-through-reactive-oxygen-species-dependent-and-independent-pathways
#8
Theodoros Eleftheriadis, Georgios Pissas, Maria Sounidaki, Georgia Antoniadi, Christos Rountas, Vassilios Liakopoulos, Loannis Stefanidis
In atherosclerosis-associated pathologic entities characterized by malnutrition and inflammation, L-tryptophan (TRP) levels are low. Insulin resistance is an independent cardiovascular risk factor and induces endothelial dysfunction by increasing fatty acid oxidation. It is also associated with inflammation and low TRP levels. Low TRP levels have been related to worse cardiovascular outcome. This study evaluated the effect of TRP depletion on endothelial dysfunction under conditions that imitate insulin resistance...
February 4, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28150485/obesity-and-cardiovascular-diseases
#9
Sergey Kachur, Carl J Lavie, Alban DE Schutter, Richard V Milani, Hector O Ventura
Obesity is increasingly more common in post-industrial societies, and the burden of childhood obesity is increasing. The major effects of obesity on cardiovascular (CV) health are mediated through the risk of metabolic syndrome (insulin-resistance, dyslipidemia, and hypertension), such that an absence of these risk factors in obese individuals may not be associated with increased mortality risk. In individuals already diagnosed with chronic CV disease (CVD), the overweight and class I obese have significant associations with improved survival...
February 1, 2017: Minerva Medica
https://www.readbyqxmd.com/read/28149843/gamma-glutamyl-transferase-and-cardiovascular-disease
#10
REVIEW
Gjin Ndrepepa, Adnan Kastrati
Gamma-glutamyl transferase (GGT) is an enzyme located on the external surface of cellular membranes. GGT contributes in maintaining the physiological concentrations of cytoplasmic glutathione and cellular defense against oxidative stress via cleavage of extracellular glutathione and increased availability of amino acids for its intracellular synthesis. Increased GGT activity is a marker of antioxidant inadequacy and increased oxidative stress. Ample evidence suggests that elevated GGT activity is associated with increased risk of cardiovascular disease (CVD) such as coronary heart disease (CHD), stroke, arterial hypertension, heart failure, cardiac arrhythmias and all-cause and CVD-related mortality...
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28144254/blood-pressure-dyslipidemia-and-inflammatory-factors-are-related-to-body-mass-index-in-scholar-adolescents
#11
Hanane Ghomari-Boukhatem, Assia Bouchouicha, Khedidja Mekki, Karima Chenni, Mohamed Belhadj, Malika Bouchenak
INTRODUCTION: Obesity is associated with increased occurrence of numerous diseases, including hypertension, dyslipidemia, insulin resistance, diabetes, and atherosclerosis. Blood pressure (BP), dyslipidemia, and inflammation markers and their relationships with body mass index (BMI) were determined in scholar adolescents. MATERIAL AND METHODS: Adolescents (n = 210) (sex ratio G/B = 106/104; 11 to 16 years) were recruited in three colleges of Oran city. Anthropometric parameters were measured to classify adolescents as thin (T), normal weight (NW), overweight (OW), or obese (O)...
February 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28135624/the-predictive-relationship-between-baseline-insulin-and-glucose-with-subclinical-carotid-atherosclerosis-after-5-years-in-a-multi-ethnic-cohort
#12
Adeleke O Fowokan, Iris A Lesser, Karin H Humphries, John G B Mancini, Scott A Lear
BACKGROUND AND AIMS: We aimed at exploring the relationship between baseline insulin and glucose and the progression of carotid atherosclerosis in a multi-ethnic cohort. METHODS: Males and females (n = 797) of European, Chinese, South Asian and Aboriginal origin were assessed as part of the Multicultural Community Health Assessment Trial (MCHAT) study for socio-demographics, smoking status, fasting insulin and glucose at baseline. IMT, plaque area and total area were assessed after 5 years...
December 15, 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28130355/2intestinal-epithelial-cell-caveolin-1-regulates-fatty-acid-and-lipoprotein-cholesterol-plasma-levels
#13
Jessica P Otis, Meng-Chieh Shen, Vanessa Quinlivan, Jennifer L Anderson, Steven A Farber
Caveolae and their structural protein caveolin 1 (CAV1) have roles in cellular lipid processing and systemic lipid metabolism. Global deletion of CAV1 in mice results in insulin resistance and increases in atherogenic plasma lipids and cholesterol, but protects from diet-induced obesity and atherosclerosis. Despite the fundamental role of the intestinal epithelia in the regulation of dietary lipid processing and metabolism, the contributions of CAV1 to lipid metabolism in this tissue have never been directly investigated...
January 26, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28130064/cardiovascular-consequences-of-metabolic-syndrome
#14
REVIEW
Johnathan D Tune, Adam G Goodwill, Daniel J Sassoon, Kieren J Mather
The metabolic syndrome (MetS) is defined as the concurrence of obesity-associated cardiovascular risk factors including abdominal obesity, impaired glucose tolerance, hypertriglyceridemia, decreased HDL cholesterol, and/or hypertension. Earlier conceptualizations of the MetS focused on insulin resistance as a core feature, and it is clearly coincident with the above list of features. Each component of the MetS is an independent risk factor for cardiovascular disease and the combination of these risk factors elevates rates and severity of cardiovascular disease, related to a spectrum of cardiovascular conditions including microvascular dysfunction, coronary atherosclerosis and calcification, cardiac dysfunction, myocardial infarction, and heart failure...
January 9, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28124603/epicardial-adipose-tissue-another-tassel-in-the-complex-fabric-of-atherosclerosis
#15
Nikolaos Alexopoulos, Paolo Raggi
Atherosclerosis affects the majority of adult individuals in industrialized nations and it is beginning to affect even traditionally spared populations. The classic view has been that the precipitating events are intraluminal. However, good evidence supports the possibility that at least part of the atherosclerosis burden may be the consequence of extra-luminal noxious stimuli. Additionally, the epidemic of obesity, insulin resistance and diabetes mellitus has generated a strong interest in the potential role of visceral adipose tissue as an extra-luminal promoter of atherosclerosis...
January 24, 2017: Cardiovascular & Hematological Disorders Drug Targets
https://www.readbyqxmd.com/read/28122883/retinol-binding-protein-dependent-cholesterol-uptake-regulates-macrophage-foam-cell-formation-and-promotes-atherosclerosis
#16
Yan Liu, Yuan Zhong, Hongen Chen, Duan Wang, Min Wang, Jing-Song Ou, Min Xia
BACKGROUND: -Retinol binding protein 4 (RBP4) is an adipokine that plays decisive roles in glucose metabolism and insulin sensitivity. Elevated circulating RBP4 levels were reported to be associated with increased risk for cardiovascular disease, but the precise role of RBP4 in atherosclerotic diseases and its mechanisms of action remain elusive. METHODS: -Serum RBP4 levels of 1683 participants from South China were evaluated and the occurrence of major adverse cardiovascular events was followed up for 5 years...
January 25, 2017: Circulation
https://www.readbyqxmd.com/read/28122051/low-cytochrome-oxidase-1-links-mitochondrial-dysfunction-to-atherosclerosis-in-mice-and-pigs
#17
Paul Holvoet, Maarten Vanhaverbeke, Benjamine Geeraert, Dieuwke De Keyzer, Maarten Hulsmans, Stefan Janssens
BACKGROUND: Cytochrome oxidase IV complex regulates energy production in mitochondria. Therefore, we determined the relation of COX genes with atherosclerosis in mice and pigs. METHODS AND RESULTS: First, we compared atherosclerosis in the aortic arch of age-matched (24 weeks) C57BL/6J control (n = 10), LDL-receptor deficient (n = 8), leptin-deficient ob/ob (n = 10), and double knock-out (lacking LDL-receptor and leptin) mice (n = 12). Low aortic mitochondria-encoded cytochrome oxidase 1 in obese diabetic double knock-out mice was associated with a larger plaque area and higher propensity of M1 macrophages and oxidized LDL...
2017: PloS One
https://www.readbyqxmd.com/read/28120721/progranulin-a-new-adipokine-at-the-crossroads-of-metabolic-syndrome-diabetes-dyslipidemia-and-hypertension
#18
Agnieszka Korolczuk, Jerzy Bełtowski
BACKGROUND: Progranulin is a multifunctional regulatory protein with growth-promoting, neuroprotective and antiinflammatory activities. Recent studies indicate that progranulin is one of the adipose tissue hormones (adipokines). Progranulin expression in visceral adipose tissue and circulating progranulin concentration are increased in obesity and hyperprogranulinemia is involved in the pathogenesis of obesity-associated insulin resistance. Progranulin impairs insulin signaling and reduces insulin-induced glucose uptake both in vitro and in vivo whereas progranulin deficiency protects from high fat diet-induced insulin resistance...
January 24, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28109835/gut-microbiota-a-player-in-aging-and-a-target-for-anti-aging-intervention
#19
REVIEW
Alexander M Vaiserman, Alexander K Koliada, Francesco Marotta
Aging-associated alterations in composition, diversity and functional features of intestinal microbiota are well-described in the modern literature. They are suggested to be caused by an age-related decline in immune system functioning (immunosenescence) and a low-grade chronic inflammation (inflammaging), which accompany many aging-associated pathologies. The microbiota-targeted dietary and probiotic interventions have been shown to favorably affect the host health and aging by an enhancement of antioxidant activity, improving immune homeostasis, suppression of chronic inflammation, regulation of fat deposition and metabolism and prevention of insulin resistance...
January 18, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28098353/the-role-of-various-peroxisome-proliferator-activated-receptors-and-their-ligands-in-clinical-practice
#20
REVIEW
Giuseppe Derosa, Amirhossein Sahebkar, Pamela Maffioli
Peroxisome proliferator-activated receptors (PPARs) are ligand-activated transcription factors involved in several physiological processes including modulation of cellular differentiation, development, metabolism of carbohydrates, lipids, proteins, and tumorigenesis. The aim of this review is to examine how different PPAR ligands act, and discuss their use in clinical practice. PPAR ligands have a lot of effects and applications in clinical practice. Some PPAR ligands such as fibrates (PPAR-α ligands) are currently used for the treatment of dyslipidemia, while pioglitazone and rosiglitazone (PPAR-γ ligands) are anti-diabetic and insulin-sensitizing agents...
January 18, 2017: Journal of Cellular Physiology
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