Read by QxMD icon Read

glucose metabolism and heart

Milton Packer, Dalane W Kitzman
Obesity-related heart failure with a preserved ejection fraction (HFpEF) is an important phenotype prevalent in the community, especially in people with metabolic disorders (e.g., dyslipidemia, diabetes). These individuals exhibit a marked expansion of plasma volume, but ventricular distensibility is limited, most likely as a result of cardiac microvascular rarefaction acting in concert with myocardial and pericardial fibrosis. Consequently, the increase in plasma volume causes a disproportionate increase in cardiac filling pressures, leading to heart failure, even though systolic ejection is not impaired...
March 7, 2018: JACC. Heart Failure
Rasmus Stilling Tougaard, Esben Søvsø Szocska Hansen, Christoffer Laustsen, Jakob Lindhardt, Marie Schroeder, Hans Erik Bøtker, Won Yong Kim, Henrik Wiggers, Hans Stødkilde-Jørgensen
PURPOSE: Deranged metabolism is now recognized as a key causal factor in a variety of heart diseases, and is being studied extensively. However, invasive methods may alter metabolism, and conventional imaging techniques measure tracer uptake but not downstream metabolism. These challenges may be overcome by hyperpolarized MR, a noninvasive technique currently crossing the threshold into human trials. The aim of this study was to image metabolic changes in the heart in response to endogastric glucose bolus and to acute hypertension...
March 9, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Letizia Zullo, Ambra Buschiazzo, Michela Massollo, Mattia Riondato, Alessia Democrito, Cecilia Marini, Fabio Benfenati, Gianmario Sambuceti
This study aimed at developing a method for administration of18 F-Fludeoxyglucose (18 F-FDG) in the common octopus and micro-positron emission tomography (micro-PET) bio-distribution assay for the characterization of glucose metabolism in body organs and regenerating tissues. Methods: Seven animals (two with one regenerating arm) were anesthetized with 3.7% MgCl2 in artificial seawater. Each octopus was injected with 18-30 MBq of isosmotic18 F-FDG by accessing the branchial heart or the anterior vena cava. After an uptake time of ~50 minutes, the animal was sacrificed, placed on a bed of a micro-PET scanner and submitted to 10 min static 3-4 bed acquisitions to visualize the entire body...
March 9, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
Hoe-Yune Jung, Bobae Kim, Yosep Ji, Hye-Guk Ryu, Soyoung Park, Seung Hee Choi, In-Kyu Lee, Munki Kim, You Jeong Lee, Woojin Song, Young Hee Lee, Hyung Jin Choi, Chang-Kee Hyun, Wilhelm H Holzapfel, Kyong-Tai Kim
Although peroxisome proliferator-activated receptors (PPARs)α/γ dual agonists can be beneficial for treatment of dyslipidemia in patients with type 2 diabetes, their use is limited owing to various side effects, including body weight gain, edema, and heart failure. Here, we demonstrate that amodiaquine, an antimalarial agent, has potential as a PPARα/γ dual agonist with low risk of adverse effects. Amodiaquine selectively activated the transcriptional activities of PPARα/γ, and enhanced both fatty acid oxidation and glucose uptake without altering insulin secretion in vitro...
March 8, 2018: Diabetes, Obesity & Metabolism
Arpeeta Sharma, Mitchel Tate, Geetha Mathew, James E Vince, Rebecca H Ritchie, Judy B de Haan
It is now increasingly appreciated that inflammation is not limited to the control of pathogens by the host, but rather that sterile inflammation which occurs in the absence of viral or bacterial pathogens, accompanies numerous disease states, none more so than the complications that arise as a result of hyperglycaemia. Individuals with type 1 or type 2 diabetes mellitus (T1D, T2D) are at increased risk of developing cardiac and vascular complications. Glucose and blood pressure lowering therapies have not stopped the advance of these morbidities that often lead to fatal heart attacks and/or stroke...
2018: Frontiers in Physiology
Hidekatsu Yanai, Yoshinori Masui, Hisayuki Katsuyama, Hiroki Adachi, Akiko Kawaguchi, Mariko Hakoshima, Yoko Waragai, Tadanao Harigae, Akahito Sako
An epidemiological survey in the Northwest Greenland reported that the Greenlanders have a lower frequency of acute myocardial infarction and diabetes mellitus. The very low incidence of ischemic heart disease in the Greenlanders was explained by consumption of a diet rich in omega-3 polyunsaturated fatty acids (PUFAs). Possible anti-atherothrombotic effects of omega-3 PUFA include an improvement of lipid metabolism such as a reduction of triglyceride and an increase of high-density lipoprotein-cholesterol (HDL-C), and glucose metabolism, anti-platelet activity, anti-inflammatory effects, an improvement of endothelial function and stabilization of atherosclerotic plaque...
April 2018: Journal of Clinical Medicine Research
Kay-Tee Khaw, Stephen J Sharp, Leila Finikarides, Islam Afzal, Marleen Lentjes, Robert Luben, Nita G Forouhi
INTRODUCTION: High dietary saturated fat intake is associated with higher blood concentrations of low-density lipoprotein cholesterol (LDL-C), an established risk factor for coronary heart disease. However, there is increasing interest in whether various dietary oils or fats with different fatty acid profiles such as extra virgin coconut oil may have different metabolic effects but trials have reported inconsistent results. We aimed to compare changes in blood lipid profile, weight, fat distribution and metabolic markers after four weeks consumption of 50 g daily of one of three different dietary fats, extra virgin coconut oil, butter or extra virgin olive oil, in healthy men and women in the general population...
March 6, 2018: BMJ Open
Sarah Morar Schneider, Vidya Sridhar, Amanda K Bettis, Heather Heath-Barnett, Cynthia J Balog-Alvarez, Lee-Jae Guo, Rachel Johnson, Scott Jaques, Stanislav Vitha, Alan C Glowcwski, Joe N Kornegay, Peter P Nghiem
PURPOSE: Metabolic dysfunction in Duchenne muscular dystrophy (DMD) is characterized by reduced glycolytic and oxidative enzymes, decreased and abnormal mitochondria, decreased ATP, and increased oxidative stress. We analyzed glucose metabolism as a potential disease biomarker in the genetically homologous golden retriever muscular dystrophy (GRMD) dog with molecular, biochemical, and in vivo imaging. PROCEDURES: Pelvic limb skeletal muscle and left ventricle tissue from the heart were analyzed by mRNA profiling, qPCR, western blotting, and immunofluorescence microscopy for the primary glucose transporter (GLUT4)...
March 5, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
Bärbel M Ulmer, Andrea Stoehr, Mirja L Schulze, Sajni Patel, Marjan Gucek, Ingra Mannhardt, Sandra Funcke, Elizabeth Murphy, Thomas Eschenhagen, Arne Hansen
Energy metabolism is a key aspect of cardiomyocyte biology. Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) are a promising tool for biomedical application, but they are immature and have not undergone metabolic maturation related to early postnatal development. To assess whether cultivation of hiPSC-CMs in 3D engineered heart tissue format leads to maturation of energy metabolism, we analyzed the mitochondrial and metabolic state of 3D hiPSC-CMs and compared it with 2D culture. 3D hiPSC-CMs showed increased mitochondrial mass, DNA content, and protein abundance (proteome)...
February 26, 2018: Stem Cell Reports
Joaquín Sánchez-Molina, José J Robles-Pérez, Vicente J Clemente-Suárez
Soldiers´ training and experience can influence the outcome of the missions, as well as their own physical integrity. The objective of this research was to analyze the psycho-physiological response and specific motor skills in an urban combat simulation with two units of infantry with different training and experience. MATERIAL AND METHODS: psychophysiological parameters -Heart Rate, blood oxygen saturation, glucose and blood lactate, cortical activation, anxiety and heart rate variability-, as well as fine motor skills were analyzed in 31 male soldiers of the Spanish Army, 19 belonging to the Light Infantry Brigade, and 12 to the Heavy Forces Infantry Brigade, before and after an urban combat simulation...
March 2, 2018: Journal of Medical Systems
Jing-Zhe Wang, Yi-Fan Zhang, Feng Xu, Ming-Ying Shang, Guang-Xue Liu, Shao-Qing Cai
Harpagoside, an iridoid glycoside, is the major bioactive constituent of the traditional Chinese medicine Scrophulariae Radix. High-performance liquid chromatography with a diode array detector combined with electrospray ionization ion trap time-of-flight multistage mass spectrometry (HPLC-ESI-IT-TOF-MSn ) was used to profile and identify the metabolites of harpagoside in rats in vivo and to study the distribution of these metabolites in rats for the first time. A total of 45 metabolites were identified, 37 of which were postulated to be new compounds...
February 22, 2018: Biomedical Chromatography: BMC
Myoung-Gwi Ryou, Robert T Mallet
Ischemia-reperfusion syndromes of the heart and brain are the leading cause of death and long-term disability worldwide. Development of effective treatments for myocardial infarction, stroke, cardiac arrest and their sequelae requires preclinical models that replicate specific features of ischemia-reperfusion. The complexities of intact animals, including the integrated function of organ systems, autonomic innervation and endocrine factors, often preclude detailed study of specific components of ischemia-reperfusion injury cascades...
2018: Methods in Molecular Biology
Rosanna Di Paola, Roberta Fusco, Enrico Gugliandolo, Ramona D'Amico, Michela Campolo, Saverio Latteri, Arianna Carughi, Giuseppina Mandalari, Salvatore Cuzzocrea
Diabetes mellitus is an important risk factor for the development of heart pathology. Myocardial infarction is the cause of death occurring after prolonged ischemia of the coronary arteries. Restoration of blood flow is the first intervention against heart attack, although the process of restoring blood flow to the ischemic myocardium could cause additional injury. This phenomenon, termed myocardial ischemia-reperfusion (MI-R) injury, is characterized by the formation of oxygen radicals. Pistachios have significant glucose- and insulin-lowering effects and can improve the inflammatory contest by downregulating both the expression and the circulating levels of several metabolic risk markers...
2018: Frontiers in Pharmacology
T Dung Nguyen, Yasushige Shingu, Paulo A Amorim, Christina Schenkl, Michael Schwarzer, Torsten Doenst
Heart failure with preserved ejection fraction (HFpEF) has emerged as a public health burden with currently no effective medication. We assessed the treatment effects of the incretin hormone glucagon-like peptide-1 (GLP-1) on cardiac metabolism and function in a model of HFpEF. Following aortic banding, rats developed HFpEF characterized by diastolic dysfunction, pulmonary congestion, and poor survival (38%). A 4-week GLP-1 treatment via osmotic pumps significantly improved survival (70%) and reduced left ventricular stiffness, diastolic dysfunction, and pulmonary congestion...
February 20, 2018: Journal of Cardiovascular Translational Research
Antonio Planchart, Adrian Green, Cathrine Hoyo, Carolyn J Mattingly
PURPOSE OF REVIEW: Metabolic syndrome (MS) describes the co-occurrence of conditions that increase one's risk for heart disease and other disorders such as diabetes and stroke. The worldwide increase in the prevalence of MS cannot be fully explained by lifestyle factors such as sedentary behavior and caloric intake alone. Environmental exposures, such as heavy metals, have been implicated, but results are conflicting and possible mechanisms remain unclear. To assess recent progress in determining a possible role between heavy metal exposure and MS, we reviewed epidemiological and model system data for cadmium (Cd), lead (Pb), and mercury (Hg) from the last decade...
February 19, 2018: Current Environmental Health Reports
Evangelos Oikonomou, Konstantinos Mourouzis, Petros Fountoulakis, Georgios Angelos Papamikroulis, Gerasimos Siasos, Alexis Antonopoulos, Georgia Vogiatzi, Sotiris Tsalamadris, Manolis Vavuranakis, Dimitris Tousoulis
Heart failure (HF) is a common cardiac syndrome, whose pathophysiology involves complex mechanisms, some of which remain unknown. Diabetes mellitus (DM) constitutes not only a glucose metabolic disorder accompanied by insulin resistance but also a risk factor for cardiovascular disease and HF. During the last years though emerging data set up, a bidirectional interrelationship between these two entities. In the case of DM impaired calcium homeostasis, free fatty acid metabolism, redox state, and advance glycation end products may accelerate cardiac dysfunction...
February 17, 2018: Heart Failure Reviews
Hong Yang, Anyun Feng, Sundong Lin, Lechu Yu, Xiufei Lin, Xiaoqing Yan, Xuemian Lu, Chi Zhang
Our previous studies showed that both exogenous and endogenous FGF21 inhibited cardiac apoptosis at the early stage of type 1 diabetes. Whether FGF21 induces preventive effect on type 2 diabetes-induced cardiomyopathy was investigated in the present study. High-fat-diet/streptozotocin-induced type 2 diabetes was established in both wild-type (WT) and FGF21-knockout (FGF21-KO) mice followed by treating with FGF21 for 4 months. Diabetic cardiomyopathy (DCM) was diagnosed by significant cardiac dysfunction, remodeling, and cardiac lipid accumulation associated with increased apoptosis, inflammation, and oxidative stress, which was aggravated in FGF21-KO mice...
February 14, 2018: Cell Death & Disease
Hong Liu, Wei-Wei Su, Chao-Feng Long, Wei-Jian Zhang, Pei-Bo Li, Zhong Wu, Yin-Yin Liao, Xuan Zeng, Tao-Bin Chen, Yu-Ying Zheng, Zeng-Hao Yan, Cong Bi, Hong-Liang Yao
Currently, the prevention and treatment of hypertensive crises especially when it occurs with serious adverse outcomes have led to worldwide controversy. Despite of clinical possibilities of multiple agents, clinical failures still occur frequently. Therefore, early evaluations and observations of different therapies on appropriate animals should be emphasized. In the present study, an animal model for hypertensive crises emergencies was firstly established and experimentally testified. Five-month-male spontaneously hypertensive rat was consecutively fed with 60%-Kcal fat diet for four, six, and eight weeks with body weight and blood pressure monitored every two weeks, and then followed by an acute vasoconstriction stress of 5-min ice-bath treatment in the 4-h time interval of two adrenaline injections (0...
January 1, 2018: Experimental Biology and Medicine
Eylem Levelt, Gaurav S Gulsin, Stefan Neubauer, Gerry P McCann
Heart failure is a major cause of morbidity and mortality in type 2 diabetes. Type 2 diabetes contributes to the development of heart failure through a variety of mechanisms, including disease specific myocardial structural, functional and metabolic changes. This review will focus on the contemporary contributions of state of the art non-invasive technologies to our understanding of diabetic cardiomyopathy, including data on cardiac disease phenotype, cardiac energy metabolism and energetic deficiency, ectopic and visceral adiposity, diabetic liver disease, metabolic modulation strategies, and cardiovascular outcomes with new classes of glucose lowering therapies...
February 12, 2018: European Journal of Endocrinology
Zhongshang Yuan, Yang Yang, Chunxia Wang, Jing Liu, Xiubin Sun, Yi Liu, Shengxu Li, Fuzhong Xue
BACKGROUND: Fasting plasma glucose (FPG) levels can vary over time and its longitudinal changing patterns may predict cardiometabolic risk. We aim to identify different trajectories of FPG in those who remained normoglycemic and investigate the association between trajectory groups and coronary heart disease risk in a large prospective cohort study. METHODS AND RESULTS: A total of 20 514 subjects between ages 20 and 80 years were included at baseline. All participants had maintained normal FPG throughout an average follow-up period of 5...
February 13, 2018: Journal of the American Heart Association
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"