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glucose metabolism and heart

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https://www.readbyqxmd.com/read/29142088/muscle-glycogen-synthesis-and-breakdown-are-both-impaired-in-glycogenin-1-deficiency
#1
Mads Godtfeldt Stemmerik, Karen Lindhardt Madsen, Pascal Laforêt, Astrid Emilie Buch, John Vissing
OBJECTIVE: To study fat and carbohydrate metabolism during exercise in patients with glycogenin-1 (GYG1) deficiency, and to study whether IV glucose supplementation can alleviate exercise intolerance in these patients. METHODS: This is a case-control study with 4 patients with GYG1 deficiency and 4 healthy controls. Patients performed 1 hour of cycling at 50% of their maximal workload capacity, while controls cycled at the same absolute workloads as patients. Heart rate was measured continuously, and production and utilization of fat and glucose was assessed by stable isotope technique...
November 15, 2017: Neurology
https://www.readbyqxmd.com/read/29138224/short-term-metformin-and-exercise-training-effects-on-strength-aerobic-capacity-glycemic-control-and-mitochondrial-function-in-children-with-burn-injury
#2
Eric Rivas, David N Herndon, Craig Porter, Walter Meyer, Oscar E Suman
Severely burned children experience a chronic state of sympathetic nervous system activation that is associated with hypermetabolic/cardiac stress and muscle wasting. Metformin, a diabetes medication, helps control hyperglycemia in diabetic populations, and exercise has been shown to improve exercise strength and aerobic exercise capacity after severe burns. However, whether exercise improves glycemic control in burned children and whether combining exercise and metformin improves outcomes to a greater degree than exercise alone is unknown...
November 14, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29137068/carnitine-acylcarnitine-translocase-deficiency-with-c-199-10-t-g-and-novel-c-1a-g-mutation-two-case-reports-and-brief-literature-review
#3
Hui-Ming Yan, Hao Hu, Aisha Ahmed, Bing-Bing Feng, Jing Liu, Zheng-Jun Jia, Hua Wang
RATIONALE: Carnitine-acylcarnitine translocate deficiency (CACTD) is a rare and life-threatening, autosomal recessive disorder of fatty acid β-oxidation characterized by hypoketotic hypoglycemia, hyperammonemia, cardiomyopathy, liver dysfunction, and muscle weakness; culminating in early death. To date, CACTD cases screened from the Chinese mainland population, especially patient with compound heterozygote with c.199-10T>G and a novel c.1A>G mutation in the SLC25A20 gene has never been described...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29135535/blood-glucose-concentrations-in-prehospital-trauma-patients-with-traumatic-shock-a-retrospective-analysis
#4
Janett Kreutziger, Wolfgang Lederer, Stefan Schmid, Hanno Ulmer, Volker Wenzel, Maarten W Nijsten, Daniel Werner, Thomas Schlechtriemen
BACKGROUND: Deranged glucose metabolism after moderate to severe trauma with either high or low concentrations of blood glucose is associated with poorer outcome. Data on prehospital blood glucose concentrations and trauma are scarce. OBJECTIVES: The primary aim was to describe the relationship between traumatic shock and prehospital blood glucose concentrations. The secondary aim was to determine the additional predictive value of prehospital blood glucose concentration for traumatic shock when compared with vital parameters alone...
November 11, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29132539/the-diabetic-heart-utilizes-ketone-bodies-as-an-energy-source
#5
Yuji Mizuno, Eisaku Harada, Hitoshi Nakagawa, Yoshinobu Morikawa, Makoto Shono, Fumihito Kugimiya, Michihiro Yoshimura, Hirofumi Yasue
BACKGROUND: Diabetic heart is characterized by failure of insulin to increase glucose uptake and increasingly relies on free fatty acids (FFAs) as a source of fuel in animal models. However, it is not well known how cardiac energy metabolism is altered in diabetic hearts in humans. We examined cardiac fuel metabolism in the diabetics as compared to non-diabetics who underwent cardiac catheterization for heart diseases. MATERIAL AND METHODS: The study subjects comprised 81 patients (male 55, female 26, average age 63...
December 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29130531/acute-hypoxic-preconditioning-prevents-palmitic-acid-induced-cardiomyocyte-apoptosis-via-switching-metabolic-glut4-glucose-pathway-back-to-cd36-fatty-acid-dependent
#6
Yeh-Peng Chen, Wei-Wen Kuo, Rathinasamy Baskaran, Cecilia-Hsuan Day, Ray-Jade Chen, Su-Ying Wen, Tsung-Jung Ho, Viswanadha Vijaya Padma, Chia-Hua Kuo, Chih-Yang Huang
Metabolic syndrome is a risk factor for the development of cardiovascular diseases. Myocardial cell damage leads to an imbalance of energy metabolism, and many studies have indicated that short-term hypoxia during myocardial cell injury has a protective effect. In our previous animal studies, we found that short-term hypoxia in the heart has a protective effect, but long-term hypoxia increases myocardial cell injury. Palmitic acid (PA)-treated H9c2 cardiomyoblasts and neonatal rat ventricle cardiomyocytes were used to simulate hyperlipidemia model, which suppress cluster of differentiation 36 (CD36) and activate glucose transporter type 4 (GLUT4)...
November 11, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29122559/constant-hepatic-atp-concentrations-during-prolonged-fasting-and-absence-of-effects-of-cerbomed-nemos-%C3%A2-on-parasympathetic-tone-and-hepatic-energy-metabolism
#7
Sofiya Gancheva, Alessandra Bierwagen, Daniel F Markgraf, Gidon J Bönhof, Kevin G Murphy, Erifili Hatziagelaki, Jesper Lundbom, Dan Ziegler, Michael Roden
OBJECTIVE: Brain insulin-induced improvement in glucose homeostasis has been proposed to be mediated by the parasympathetic nervous system. Non-invasive transcutaneous auricular vagus nerve stimulation (taVNS) activating afferent branches of the vagus nerve may prevent hyperglycemia in diabetes models. We examined the effects of 14-min taVNS vs sham stimulation by Cerbomed Nemos(®) on glucose metabolism, lipids, and hepatic energy homeostasis in fasted healthy humans (n = 10, age 51 ± 6 yrs, BMI 25...
October 25, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29121919/effects-of-hypoglycemia-on-myocardial-susceptibility-to-ischemia-reperfusion-injury-and-preconditioning-in-hearts-from-rats-with-and-without-type-2-diabetes
#8
Kim B Pælestik, Nichlas R Jespersen, Rebekka V Jensen, Jacob Johnsen, Hans Erik Bøtker, Steen B Kristiansen
BACKGROUND: Hypoglycemia is associated with increased mortality rate in patients with diabetes. The underlying mechanisms may involve reduced myocardial tolerance to ischemia and reperfusion (IR) or reduced capacity for ischemic preconditioning (IPC). As IPC is associated with increased myocardial glucose uptake (MGU) during reperfusion, cardioprotection is linked to glucose metabolism possibly by O-linked β-N-acetylglucosamine (O-GlcNAc). We aimed to investigate the impact of hypoglycemia in hearts from animals with diabetes on myocardial IR tolerance, on the efficacy of IPC and whether modulations of MGU and O-GlcNAc levels are involved in the underlying mechanisms...
November 9, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29121540/computer-aided-diagnosis-of-diabetic-foot-using-infrared-thermography-a-review
#9
Muhammad Adam, Eddie Y K Ng, Jen Hong Tan, Marabelle L Heng, Jasper W K Tong, U Rajendra Acharya
Diabetes mellitus (DM) is a chronic metabolic disorder that requires regular medical care to prevent severe complications. The elevated blood glucose level affects the eyes, blood vessels, nerves, heart, and kidneys after the onset. The affected blood vessels (usually due to atherosclerosis) may lead to insufficient blood circulation particularly in the lower extremities and nerve damage (neuropathy), which can result in serious foot complications. Hence, an early detection and treatment can prevent foot complications such as ulcerations and amputations...
October 26, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29118201/inflow-of-oxygen-and-glucose-into-brain-tissue-induced-by-intravenous-norepinephrine-relationships-with-central-metabolic-and-peripheral-vascular-responses
#10
R Aaron Bola, Eugene A Kiyatkin
As an essential part of sympathetic activation that prepares the organism for "fight or flight," peripheral norepinephrine (NE) plays an important role in regulating cardiac activity and the tone of blood vessels, increasing blood flow to the heart and the brain and decreasing blood flow to the organs not as necessary for immediate survival. To assess whether this effect is applicable to the brain, we used high-speed amperometry to measure the changes in nucleus accumbens (NAc) levels of oxygen and glucose induced by intravenous (iv) injections of NE in awake, freely-moving rats...
November 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29115948/evaluation-of-intravenous-regional-anaesthesia-and-four-point-nerve-block-efficacy-in-the-distal-hind-limb-of-dairy-cows
#11
S Yavari, N Khraim, G Szura, A Starke, E Engelke, C Pfarrer, K Hopster, M Schmicke, W Kehler, M Heppelmann, S B R Kästner, J Rehage
BACKGROUND: Intravenous regional anaesthesia (IVRA) and hindfoot four-point nerve block anaesthesia (NBA) are recommended for local anaesthesia (LA) in the distal limb of dairy cows. Two studies were conducted to compare the efficacy, time until onset and stress responses to IVRA and NBA in dairy cows. In the first cross-over designed study, eight healthy unsedated German Holstein cows, restrained in lateral recumbency (LR) on a surgical tipping table, were treated with IVRA and NBA using procaine 2% as a local anaesthetic...
November 7, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29115374/metabolic-profiles-of-adipose-derived-and-bone-marrow-derived-stromal-cells-from-elderly-coronary-heart-disease-patients-by-capillary-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry
#12
Jian-Zhong Li, Hui Qu, Jian Wu, Fan Zhang, Zhi-Bo Jia, Jian-Yong Sun, Bo Lv, Yue Kang, Shu-Lin Jiang, Kai Kang
Adipose-tissue derived mesenchymal stem cell (ADSC)-based therapy is a promising option for patients with atherosclerotic conditions, including coronary artery disease. However, the potential differences in the metabolic characteristics between bone marrow-derived mesenchymal stem cells (BMSCs) and ADSCs have remained to be fully elucidated. The present study aimed to compare the metabolic profiles of BMSCs and ADSCs via liquid chromatography quadrupole time-of-flight mass spectrometry. BMSCs and ADSCs obtained from elderly coronary heart disease patients were cultured, and after three passages, supernatants of each cell type were collected and systematically analysed...
October 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29113787/nox4-genetic-inhibition-in-experimental-hypertension-and-metabolic-syndrome
#13
Ghina Bouabout, Estelle Ayme-Dietrich, Hugues Jacob, Marie-France Champy, Marie-Christine Birling, Guillaume Pavlovic, Lola Madeira, Lahcen El Fertak, Benoit Petit-Demoulière, Tania Sorg, Yann Herault, John Mudgett, Laurent Monassier
BACKGROUND: Metabolic syndrome is a combination of symptoms including obesity, dyslipidaemia, glucose intolerance and hypertension. Oxidative stress appears to be a pathophysiological factor that links these signs and encourages progression towards heart failure and diabetes. Nox4 is a hydrogen peroxide nicotinamide adenine dinucleotide phosphate (NADPH) oxidase isoform - found in various cardiovascular cells and tissues, but also in tissues such as the liver - which is involved in glucose and lipid homeostasis...
November 4, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29111822/repercussions-of-hypo-and-hyperthyroidism-on-the-heart-circadian-clock
#14
Rodrigo A Peliciari-Garcia, Paula Bargi-Souza, Martin E Young, Maria Tereza Nunes
Myocardial gene expression and metabolism fluctuate over the course of the day in association with changes in energy supply and demand. Time-of-day-dependent oscillations in myocardial processes have been linked to the intrinsic cardiomyocyte circadian clock. Triiodothyronine (T3) is an important modulator of heart metabolism and function. Recently, our group has reported time-of-day-dependent rhythms in cardiac T3 sensitivity, as well as, T3-mediated acute alterations on core clock components. Hypo and hyperthyroidism are the second most prevalent endocrine disease worldwide...
November 7, 2017: Chronobiology International
https://www.readbyqxmd.com/read/29109032/molecular-mechanisms-of-cardiac-pathology-in-diabetes-experimental-insights
#15
REVIEW
U Varma, P Koutsifeli, V L Benson, K M Mellor, L M D Delbridge
Diabetic cardiomyopathy is a distinct pathology independent of co-morbidities such as coronary artery disease and hypertension. Diminished glucose uptake due to impaired insulin signaling and decreased expression of glucose transporters is associated with a shift towards increased reliance on fatty acid oxidation and reduced cardiac efficiency in diabetic hearts. The cardiac metabolic profile in diabetes is influenced by disturbances in circulating glucose, insulin and fatty acids, and alterations in cardiomyocyte signaling...
November 3, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29107282/the-autonomic-nervous-system-and-cardiac-glp-1-receptors-control-heart-rate-in-mice
#16
Laurie L Baggio, John R Ussher, Brent A McLean, Xiemin Cao, M Golam Kabir, Erin E Mulvihill, Alexandra S Mighiu, Hangjun Zhang, Andreas Ludwig, Randy J Seeley, Scott P Heximer, Daniel J Drucker
OBJECTIVES: Glucagon-like peptide-1 (GLP-1) is secreted from enteroendocrine cells and exerts a broad number of metabolic actions through activation of a single GLP-1 receptor (GLP-1R). The cardiovascular actions of GLP-1 have garnered increasing attention as GLP-1R agonists are used to treat human subjects with diabetes and obesity that may be at increased risk for development of heart disease. Here we studied mechanisms linking GLP-1R activation to control of heart rate (HR) in mice...
November 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29101739/brown-adipose-tissue-an-update-on-recent-findings
#17
REVIEW
Kara L Marlatt, Eric Ravussin
PURPOSE OF REVIEW: New treatment approaches to weight loss and weight loss maintenance in humans are critical. Given its potential role in stimulating energy expenditure, brown adipose tissue (BAT) activation has become a trending topic as an anti-obesity treatment. RECENT FINDINGS: Most studies on BAT stimulation have been conducted in rodents and used cold stimulation. To date, few human trials exist that tested the effect of cold exposure on BAT. Those studies show that BAT contributes a small amount to overall energy metabolism which is unlikely to cause weight loss...
November 3, 2017: Current Obesity Reports
https://www.readbyqxmd.com/read/29101298/loss-of-microrna-22-prevents-high-fat-diet-induced-dyslipidemia-and-increases-energy-expenditure-without-affecting-cardiac-hypertrophy
#18
Gabriela Placoná Diniz, Zhan-Peng Huang, Jianming Liu, Jinghai Chen, Jian Ding, Renata Inzinna Fonseca, Maria Luiza Barreto-Chaves, Jose Donato, Xiaoyun Hu, Da-Zhi Wang
Obesity is associated with development of diverse diseases, including cardiovascular diseases and dyslipidemia. MiRNA-22 (miR-22) is a critical regulator of cardiac function and targets genes involved in metabolic processes. Previously we generated miR-22 null mice and we showed that loss of miR-22 blunted cardiac hypertrophy induced by mechanohormornal stress. In this study, we examined the role of miR-22 in the cardiac and metabolic alterations promoted by high fat (HF) diet. We found that loss of miR-22 attenuated the gain of fat mass and prevented dyslipidemia induced by HF diet, although the body weight gain, or glucose intolerance and insulin resistance did not seem to be affected...
November 3, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29099710/vitamins-d-and-e-combined-effect-on-the-rat-myocardium-under-alloxan-induced-diabetes
#19
B Osipiani, T Machavariani, T Gvamichava, I Gachechiladze, E Nikobadze
It is commonly known that in diabetes mellitus the risk of cardiovascular diseases and mortality increases. The purpose of this study was to determine the specific features of the morphological restructuring of the myocardium in the early stage of experimental diabetes and use the combined impact of powerful antioxidants (Vitamin C and Vitamin E) on the rat myocardium in conditions of alloxan-induced diabetes. The experimental animals were divided into three groups: 40 rats were the target, and 20 rats were the control...
October 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29098321/sugar-sweetened-beverage-intake-associations-with-fasting-glucose-and-insulin-concentrations-are-not-modified-by-selected-genetic-variants-in-a-chrebp-fgf21-pathway-a-meta-analysis
#20
Nicola M McKeown, Hassan S Dashti, Jiantao Ma, Danielle E Haslam, Jessica C Kiefte-de Jong, Caren E Smith, Toshiko Tanaka, Mariaelisa Graff, Rozenn N Lemaitre, Denis Rybin, Emily Sonestedt, Alexis C Frazier-Wood, Dennis O Mook-Kanamori, Yanping Li, Carol A Wang, Elisabeth T M Leermakers, Vera Mikkilä, Kristin L Young, Kenneth J Mukamal, L Adrienne Cupples, Christina-Alexandra Schulz, Tzu-An Chen, Ruifang Li-Gao, Tao Huang, Wendy H Oddy, Olli Raitakari, Kenneth Rice, James B Meigs, Ulrika Ericson, Lyn M Steffen, Frits R Rosendaal, Albert Hofman, Mika Kähönen, Bruce M Psaty, Louise Brunkwall, Andre G Uitterlinden, Jorma Viikari, David S Siscovick, Ilkka Seppälä, Kari E North, Dariush Mozaffarian, Josée Dupuis, Marju Orho-Melander, Stephen S Rich, Renée de Mutsert, Lu Qi, Craig E Pennell, Oscar H Franco, Terho Lehtimäki, Mark A Herman
AIMS/HYPOTHESIS: Sugar-sweetened beverages (SSBs) are a major dietary contributor to fructose intake. A molecular pathway involving the carbohydrate responsive element-binding protein (ChREBP) and the metabolic hormone fibroblast growth factor 21 (FGF21) may influence sugar metabolism and, thereby, contribute to fructose-induced metabolic disease. We hypothesise that common variants in 11 genes involved in fructose metabolism and the ChREBP-FGF21 pathway may interact with SSB intake to exacerbate positive associations between higher SSB intake and glycaemic traits...
November 2, 2017: Diabetologia
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