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glucose metabolism and heart

Bhavisha Bakrania, Joey P Granger, Romain Harmancey
The mammalian heart is a major consumer of ATP and requires a constant supply of energy substrates for contraction. Not surprisingly, alterations of myocardial metabolism have been linked to the development of contractile dysfunction and heart failure. Therefore, unraveling the link between metabolism and contraction should shed light on some of the mechanisms governing cardiac adaptation or maladaptation in disease states. The isolated working rat heart preparation can be used to follow, simultaneously and in real time, cardiac contractile function and flux of energy providing substrates into oxidative metabolic pathways...
September 28, 2016: Journal of Visualized Experiments: JoVE
Jacinthe Leclerc, Marie Arsenault, Jean-Pierre Després, Patrice Brassard, Valérie Gaudreault, Jean Bergeron, Natalie Alméras, Angelo Tremblay, Audrey Auclair, Marie-Kristelle Ross, Stéphanie Denault-Bissonnette, Paul Poirier
BACKGROUND: Abdominal obesity and presence of the metabolic syndrome (MetS) are associated with cardiac abnormalities. Among those, left ventricular diastolic dysfunction (LVDD) is the most frequently encountered in clinical practice. Few studies evaluated the reversibility of LVDD by an approach promoting lifestyle modifications in abdominally obese subjects with MetS. METHODS: We assessed the impact of a 1-year lifestyle modification program combining nutritional and physical activity counseling on LVDD and metabolic profile of abdominally obese men with MetS...
October 18, 2016: Metabolic Syndrome and related Disorders
Francesca Saladini, Elisabetta Benetti, Claudio Fania, Lucio Mos, Raffaella Garbelotto, Andrea Mazzer, Edoardo Casiglia, Paolo Palatini
OBJECTIVE: High serum uric acid (SUA) is often associated with the metabolic syndrome and is a risk factor for cardiovascular disease. Whether high SUA is associated with arterial stiffness in the early stage of hypertension is not well known. DESIGN AND METHOD: We addressed this issue in 340 non-diabetic subjects from the HARVEST study (73% males) with a mean age of 31 ± 8 years and a mean blood pressure (BP) of 145 ± 11/92 ± 6 mmHg. Patients were divided into SUA tertiles (T1: 1...
September 2016: Journal of Hypertension
Hiroshi Itoh
Many hypertension guidelines have been published mainly from Western countries to standardize the management of hypertension all over the world, however, the significance of hypertension, along with other cardio-metabolic risks, such as obesity, diabetes or dyslipidemia should differ among different races. This paper compares the relevance of hypertension, one of the most important cardio-metabolic risk factors, in Asian and Western societies.1) Low target level of blood pressure control for diabetic hypertensives in JapanIn the Japanese Society of Hypertension Guidelines for the management of Hypertension (JSH2014), the target of blood pressure (BP) control in hypertensive patients with diabetes was set as < 130/80 mmHg...
September 2016: Journal of Hypertension
Chang Wei-Ting, Chen Zhih-Cherng, Cheng Juei-Tang
OBJECTIVE: Despite the threatening risks of diabetes-induced cardiac fibrosis, less is known to whether diabetes causes an altered cardiac phenotype independent of coronary atherosclerosis. Peroxisome proliferator-activated receptor δ (PPARδ) emerges as a versatile regulator of metabolic and inflammatory homeostasis. Potentially PPARδ may be a therapeutic target for diabetes induced cardiac fibrosis. In the present study, we investigated the effectiveness of Telmisartan, a unique angiotensin receptor blocker (ARB) that increased the expression of PPARδ, in the improvement of left ventricular remodeling in both diabetic human and rats...
September 2016: Journal of Hypertension
X-F Su, L Sun, B-L Liu, X-J Tao, H-Q Li, F-F Li, L Ye, K-O Lee, J-H Ma, S-L Chen
Aim: Patients with cardiac diseases, especially ischemic heart disease, are known to have a high prevalence of diabetes mellitus (DM). They are at risk of having inadequate glucose control. An intensive diabetes screening and treatment program was developed to identify and treat DM in patients admitted with cardiac diseases. Methods: Adult inpatients of 2 cardiac wards, namely Ward-A and Ward-B, at Nanjing Hospital, Nanjing, China, were studied. Patients were randomly assigned into either ward. In addition to routine examination and treatment, an intensive screening and treatment program to identify and treat patients with DM or impaired glucose regulation (IGR) was only applied in Ward-A patients...
October 17, 2016: Experimental and Clinical Endocrinology & Diabetes
L Vida Perez, J L Montero Alvarez, A Poyato Gonzalez, J Briceño Delgado, G Costan Rodero, E Fraga Rivas, P Barrera Baena, M De la Mata Garcia
BACKGROUND: The development of metabolic syndrome (MS) after liver transplantation (LT) is a major source of mortality derived from cardiovascular events. The aim of the present study was to determine the prevalence and risk factors of MS after LT. METHODS: One-hundred seventy-four consecutive LT patients from January 2004 to June 2010 surviving longer than 1 year after LT were included. Median follow-up after LT was 48 months. Independent predictors of MS were obtained by means of multivariate logistic regression...
September 2016: Transplantation Proceedings
Vishal R Mali, Guodong Pan, Mandar Deshpande, Rajarajan A Thandavarayan, Jiang Xu, Xiao-Ping Yang, Suresh S Palaniyandi
Aldehyde dehydrogenase (ALDH) 2 is a mitochondrial isozyme of the heart involved in the metabolism of toxic aldehydes produced from oxidative stress. We hypothesized that hyperglycemia-mediated decrease in ALDH2 activity may impair mitochondrial respiration and ultimately result in cardiac damage. A single dose (65 mg/kg; i.p.) streptozotocin injection to rats resulted in hyperglycemia with blood glucose levels of 443 ± 9 mg/dl versus 121 ± 7 mg/dl in control animals, p<0.0001, N = 7-11. After 6 months of diabetes mellitus (DM) induction, the rats were sacrificed after recording the functionality of their hearts...
2016: PloS One
Hye Jin Yoo, Soon Young Hwang, Kyung Mook Choi, Sei Hyun Baik, Eun Mi Lee, Eung Joo Kim, Seung-Woon Rha, Chang Gyu Park, Dong Joo Oh, Hong Seog Seo
We compared heart rate variability (HRV) values according to the following body size phenotypes: metabolically healthy normal weight (MHNW), metabolically unhealthy but normal weight (MUNW), metabolically healthy but obese (MHO), and metabolically unhealthy obese (MUO). We retrospectively analyzed a dataset from 1200 participants who had visited the Cardiovascular Center at Korea University Guro Hospital between March 2009 and February 2014 and underwent Holter monitoring for 24h. HRV was calculated from standard deviation of normal-to-normal R-R intervals (SDNN), standard deviation of the average normal-to-normal intervals (SDANN), and root mean square of successive differences (rMSSD) measurements, and study subjects were classified according to body mass index (BMI) and presence or absence of metabolic syndrome...
November 2016: Metabolism: Clinical and Experimental
Marcello Ricardo Paulista Markus, Marcus Dörr
No abstract text is available yet for this article.
October 2016: Circulation. Cardiovascular Imaging
Yu-Ju Chen, Chin-Ling Lin, Chi-Rong Li, Shih-Ming Huang, James Yi-Hsin Chan, Wen-Hui Fang, Wei-Liang Chen
BACKGROUND: Metabolic syndrome (MetS) has been reported to cause considerable psychoneuroimmunology (PNI) disturbances such as, psychological distress, autonomic nervous imbalance, and impaired immune function. Associations among these psychoneuroimmunology (PNI) factors and their integrated effects with MetS and risk components of MetS necessitate further exploration. OBJECTIVE: This study investigated associations among psychoneuroimmunological factors, their integrated effects with MetS and risk components of MetS...
October 7, 2016: Psychoneuroendocrinology
Beatriz B Lustosa, Bertha Polegato, Marcos Minicucci, Bruna Rafacho, Priscila P Santos, Ana Angélica Fernandes, Katashi Okoshi, Diego Batista, Pamela Modesto, Andrea Gonçalves, Elenize J Pereira, Vanessa Pires, Sergio Paiva, Leonardo Zornoff, Paula S Azevedo
BACKGROUND: Considering the high morbidity and mortality after myocardial infarction (MI), the study of compounds with potential benefits for cardiac remodeling is reasonable. Green tea (GT) (Cammellia sinensis) is the most consumed beverage in the world. The potential action mechanisms of GT include anti-inflammatory, anti-apoptotic, antioxidant, and lipid-lowering properties. OBJECTIVE: This study analyzed the effects of GT on cardiac remodeling following coronary occlusion in rats...
October 2, 2016: International Journal of Cardiology
Héctor Gómez-Dantés, Nancy Fullman, Héctor Lamadrid-Figueroa, Lucero Cahuana-Hurtado, Blair Darney, Leticia Avila-Burgos, Ricardo Correa-Rotter, Juan A Rivera, Simon Barquera, Eduardo González-Pier, Tania Aburto-Soto, Elga Filipa Amorin de Castro, Tonatiuh Barrientos-Gutiérrez, Ana C Basto-Abreu, Carolina Batis, Guilherme Borges, Ismael Campos-Nonato, Julio C Campuzano-Rincón, Alejandra de Jesús Cantoral-Preciado, Alejandra G Contreras-Manzano, Lucia Cuevas-Nasu, Vanessa V de la Cruz-Gongora, Jose L Diaz-Ortega, María de Lourdes García-García, Armando Garcia-Guerra, Teresita González de Cossío, Luz D González-Castell, Ileana Heredia-Pi, Marta C Hijar-Medina, Alejandra Jauregui, Aida Jimenez-Corona, Nancy Lopez-Olmedo, Carlos Magis-Rodríguez, Catalina Medina-Garcia, Maria E Medina-Mora, Fabiola Mejia-Rodriguez, Julio C Montañez, Pablo Montero, Alejandra Montoya, Grea L Moreno-Banda, Andrea Pedroza-Tobías, Rogelio Pérez-Padilla, Amado D Quezada, Vesta L Richardson-López-Collada, Horacio Riojas-Rodríguez, Maria J Ríos Blancas, Christian Razo-Garcia, Martha P Romero Mendoza, Tania G Sánchez-Pimienta, Luz M Sánchez-Romero, Astrid Schilmann, Edson Servan-Mori, Teresa Shamah-Levy, Martha M Téllez-Rojo, José L Texcalac-Sangrador, Haidong Wang, Theo Vos, Mohammad H Forouzanfar, Mohsen Naghavi, Alan D Lopez, Christopher J L Murray, Rafael Lozano
BACKGROUND: Child and maternal health outcomes have notably improved in Mexico since 1990, whereas rising adult mortality rates defy traditional epidemiological transition models in which decreased death rates occur across all ages. These trends suggest Mexico is experiencing a more complex, dissonant health transition than historically observed. Enduring inequalities between states further emphasise the need for more detailed health assessments over time. The Global Burden of Diseases, Injuries, and Risk Factors Study 2013 (GBD 2013) provides the comprehensive, comparable framework through which such national and subnational analyses can occur...
October 5, 2016: Lancet
Junfeng Li, Nan Wu, Wenling Dai, Liu Jiang, Yintao Li, Shibao Li, Zhongyuan Wen
BACKGROUND: Type 2 diabetes mellitus (T2DM) is a recognized trigger factor for heart failure with preserved ejection fraction (HFpEF). Recent studies show that higher serum calcium level is associated with greater risk of both T2DM and heart failure. We speculate that increased serum calcium is related to HFpEF prevalence in patients with T2DM. METHODS: In this cross-sectional echocardiographic study, 807 normocalcemia and normophosphatemia patients with T2DM participated, of whom 106 had HFpEF...
October 3, 2016: Cardiovascular Diabetology
Damian J Damian, Roseanne McNamee, Matthew Carr
BACKGROUND: Treatment of hypertension reduces incidence of stroke, myocardial infarction and heart failure perhaps partly by controlling different metabolic parameters. There is limited information regarding the changes in potassium, sodium, weight, cholesterol and glucose levels in patients using anti-hypertensives. This study aimed to determine changes in potassium, sodium, glucose, cholesterol, weight, urea and urate levels in patients using anti-hypertensives. Furthermore, to describe these changes and differences between the atenolol, hydrochlorothiazide plus amiloride and placebo arms of the Medical Research Council (MRC) elderly randomised controlled trial...
October 4, 2016: BMC Cardiovascular Disorders
Francisco Gomez-Delgado, Javier Delgado-Lista, Javier Lopez-Moreno, Oriol Alberto Rangel-Zuñiga, Juan Francisco Alcala-Diaz, Ana Leon-Acuña, Andreea Corina, Elena Yubero-Serrano, Jose David Torres-Peña, Antonio Camargo, Antonio Garcia-Rios, Javier Caballero, Justo Castaño, Jose M Ordovas, Jose Lopez-Miranda, Pablo Perez-Martinez
BACKGROUND: Leukocyte telomere length (LTL) attrition has been associated with age-related diseases. Telomerase RNA Component (TERC) genetic variants have been associated with LTL; whereas fatty acids (FAs) can interact with genetic factors and influence in aging. We explore whether variability at the TERC gene locus interacts with FA profile and two healthy diets (low-fat diet vs Mediterranean diet [MedDiet]) modulating LTL, glucose metabolism, and inflammation status in coronary heart disease (CHD) patients...
October 5, 2016: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Takumi Codere-Maruyama, Thomas Schricker, Dominique Shum-Tim, Linda Wykes, Evan Nitschmann, Celine Guichon, Arnold S Kristof, Roupen Hatzakorzian
Cardiac surgery triggers an inflammatory stress response leading to protein catabolism, a process which even high-dose insulin therapy alone cannot reverse. To determine whether hyperinsulinemic-normoglycemic clamp and perioperative amino acid supplementation improves whole-body protein balance, twenty patients scheduled for elective coronary artery bypass grafting surgery were randomly assigned to have intra and postoperative hyperinsulinemic-normoglycemic clamp with or without intravenous amino acid (AA) supplementation...
October 5, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
Leonardo C Mangili, Otavio C Mangili, Márcio S Bittencourt, Márcio H Miname, Paulo H Harada, Leonardo M Lima, Carlos E Rochitte, Raul D Santos
BACKGROUND AND AIMS: Familial hypercholesterolemia (FH) is a common genetic disorder characterized by elevated blood cholesterol, increased prevalence of subclinical atherosclerosis and high risk of premature coronary heart disease. However, this risk is not explained solely by elevated LDL-cholesterol concentrations, and other factors may influence atherosclerosis development. There is evidence that increased adiposity may predispose to atherosclerosis in FH. Epicardial fat has been associated with subclinical coronary atherosclerosis in the general population...
September 9, 2016: Atherosclerosis
Xin Yang, Zhipeng Xu, Chunlan Zhang, Zixin Cai, Jingjing Zhang
Metformin, a biguanide derivate, is known as the first-line antidiabetic agent for type 2 diabetes mellitus (T2DM) treatment. It reduces insulin resistance and decreases blood glucose concentration by inhibiting gluconeogenesis and suppressing hepatic glucose production with improved peripheral tissue insulin sensitivity. As an insulin sensitizer, metformin takes pleiotropic actions and exerts protective effects on multiple organs mainly in insulin-targeted tissues such as liver, muscle, and adipose tissues...
October 1, 2016: Biochimica et Biophysica Acta
U Smith, B B Kahn
Obesity, the major cause of the current global epidemic of type 2 diabetes (T2D), induces insulin resistance in peripheral insulin target tissues. Several mechanisms have been identified related to cross-talk between adipose tissue, skeletal muscle and liver. These mechanisms involve both increased free fatty acid release and altered secretion of adipokines from adipose tissue. A major determinant of metabolic health is the ability of subcutaneous adipose tissue (SAT) to store excess fat rather than allowing it to accumulate in ectopic depots including liver (i...
October 3, 2016: Journal of Internal Medicine
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