keyword
MENU ▼
Read by QxMD icon Read
search

cardiomyocyte and metabolism

keyword
https://www.readbyqxmd.com/read/28918113/regulation-of-mitochondrial-bioenergetics-by-the-non-canonical-roles-of-mitochondrial-dynamics-proteins-in-the-heart
#1
REVIEW
Wang Wang, Celia Fernandez-Sanz, Shey-Shing Sheu
Recent advancement in mitochondrial research has significantly extended our knowledge on the role and regulation of mitochondria in health and disease. One important breakthrough is the delineation of how mitochondrial morphological changes, termed mitochondrial dynamics, are coupled to the bioenergetics and signaling functions of mitochondria. In general, it is believed that fusion leads to an increased mitochondrial respiration efficiency and resistance to stress-induced dysfunction while fission does the contrary...
September 13, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28916735/functional-screening-in-human-cardiac-organoids-reveals-a-metabolic-mechanism-for-cardiomyocyte-cell-cycle-arrest
#2
Richard J Mills, Drew M Titmarsh, Xaver Koenig, Benjamin L Parker, James G Ryall, Gregory A Quaife-Ryan, Holly K Voges, Mark P Hodson, Charles Ferguson, Lauren Drowley, Alleyn T Plowright, Elise J Needham, Qing-Dong Wang, Paul Gregorevic, Mei Xin, Walter G Thomas, Robert G Parton, Lars K Nielsen, Bradley S Launikonis, David E James, David A Elliott, Enzo R Porrello, James E Hudson
The mammalian heart undergoes maturation during postnatal life to meet the increased functional requirements of an adult. However, the key drivers of this process remain poorly defined. We are currently unable to recapitulate postnatal maturation in human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs), limiting their potential as a model system to discover regenerative therapeutics. Here, we provide a summary of our studies, where we developed a 96-well device for functional screening in human pluripotent stem cell-derived cardiac organoids (hCOs)...
September 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28916638/pharmacological-and-physiological-assessment-of-serotonin-formation-and-degradation-in-isolated-preparations-from-mouse-and-human-heart
#3
Ulrich Gergs, Franziska Jung, Igor B Buchwalow, Britt Hofmann, Andreas Simm, Hendrik Treede, Joachim Neumann
Using transgenic mice (TG) that overexpress the human 5-HT4a-receptor specifically in cardiomyocytes, we wanted to know whether 5-HT can be formed and degraded in the mammalian heart and whether this can likewise lead to inotropic and chronotropic effects in this TG model. We noted that the 5-HT precursor, 5-hydroxy-tryptophan (5-HTP), can exert inotropic and chronotropic effects in cardiac preparations from TG but not from wild type (WT): similar results were found in human atrial preparations, as well as in intact TG animals using echocardiography...
September 15, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28899492/tilianin-pretreatment-prevents-myocardial-ischemia-reperfusion-injury-via-preservation-of-mitochondrial-function-in-rat-heart
#4
Yong Yuan, Wenjiang Cao, Ye Hong, Xinhong Guo, Yanfang Wang, Yangyang Wang, Xinchun Wang, Ping Hu
BACKGROUND: Tilianin has been demonstrated to exert protective effects on the heart against ischemia-reperfusion (I/R) injury, yet whether it is beneficial to the mitochondria during myocardial I/R is unclear. METHODS: In this study, we demonstrated that pretreatment with Tilianin dose-dependently raised the levels of ATP of the myocardium, and protected the microstructures and functions of mitochondria in rats. Furthermore, the cytoprotective effect of Tilianin has been confirmed in vivo and in the H9c2 cardiomyoblast cell line with enhancing activities of the mitochondria, controlling the levels of Ca(2+) and reactive oxygen species (ROS), and inhibiting the expression of caspase-3 and AIF in cytoplasm...
October 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28894025/attenuation-of-mir-34a-protects-cardiomyocytes-against-hypoxic-stress-through-maintenance-of-glycolysis
#5
Ying Zhang, Gang Liu, Xiaogang Gao
MicroRNAs (miRNAs) are a class of endogenous, short single-stranded non-coding RNAs, which are tightly linked to cardiac disorders such as myocardial ischemia/reperfusion (I/R) injury. MiR-34a is known to be involved in the hypoxia-induced cardiomyocytes apoptosis. However, the molecular mechanisms are unclear. In this study, we demonstrate under low glucose supply, rat cardiomyocytes are susceptive to hypoxia. Under short time hypoxia, cellular glucose uptake and lactate product are induced but under long time hypoxia, the cellular glucose metabolism are suppressed...
September 11, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28889965/losartan-counteracts-the-effects-of-cardiomyocyte-swelling-on-glucose-uptake-and-insulin-receptor-substrate-1-levels
#6
Yamil Gerena, Janice Griselle Lozada, Bryan Jael Collazo, Jarold Méndez-Álvarez, Jennifer Méndez-Estrada, Walmor C De Mello
A growing body of evidence demonstrates an association between Angiotensin II (Ang II) receptor blockers (ARBs) and enhanced glucose metabolism during ischemic heart disease. Despite these encouraging results, the mechanisms responsible for these effects during ischemia remain poorly understood. In this study we investigated the influence of losartan, an AT1 receptor blocker, and secreted Ang II (sAng II) on glucose uptake and insulin receptor substrate (IRS-1) levels during cardiomyocyte swelling. H9c2 cells were differentiated to cardiac muscle and the levels of myogenin, Myosin Light Chain (MLC), and membrane AT1 receptors were measured using flow cytometry...
September 7, 2017: Peptides
https://www.readbyqxmd.com/read/28889959/metabolic-profiles-revealed-anti-ischemia-reperfusion-injury-of-yangxinshi-tablet-in-rats
#7
Hai Zhang, Yahong Zhao, Zhengxiang Xia, Hongli Du, Yue Gao, Dan Xue, Zhenyu Zhu, Yifeng Chai
ETHNOPHARMACOLOGICAL RELEVANCE: Myocardial ischemia-reperfusion (I/R) injury is a serious injury that is resulted from the recovery of blood supply after myocardial ischemia. Yangxinshi tablet is a compound Chinese herbal preparation and often used to alleviate the myocardial ischemia in clinical, but its protective mechanism of anti-myocardial ischemia reperfusion injury remains unclear. The objective of this study was to evaluate the anti-I/R injury effect of Yangxinshi tablet on a myocardial I/R rat model and to identify serum biomarker metabolites associated with I/R based on ultra-high performance liquid chromatography coupled with quadrupole-time-of-flight mass spectrometry (UHPLC-QTOF/MS) metabolomic method, and explore the metabolic mechanism of anti-I/R injury of Yangxinshi tablet...
September 7, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28887535/metabolic-stress-induced-cardiomyopathy-is-caused-by-mitochondrial-dysfunction-due-to-attenuated-erk5-signaling
#8
Wei Liu, Andrea Ruiz-Velasco, Shoubao Wang, Saba Khan, Min Zi, Andreas Jungmann, Maria Dolores Camacho-Muñoz, Jing Guo, Guanhua Du, Liping Xie, Delvac Oceandy, Anna Nicolaou, Gina Galli, Oliver J Müller, Elizabeth J Cartwright, Yong Ji, Xin Wang
The prevalence of cardiomyopathy from metabolic stress has increased dramatically; however, its molecular mechanisms remain elusive. Here, we show that extracellular signal-regulated protein kinase 5 (Erk5) is lost in the hearts of obese/diabetic animal models and that cardiac-specific deletion of Erk5 in mice (Erk5-CKO) leads to dampened cardiac contractility and mitochondrial abnormalities with repressed fuel oxidation and oxidative damage upon high fat diet (HFD). Erk5 regulation of peroxisome proliferator-activated receptor γ co-activator-1α (Pgc-1α) is critical for cardiac mitochondrial functions...
September 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28886529/peroxisome-proliferator-activated-receptors-as-therapeutic-targets-for-heart-failure
#9
REVIEW
Abdelrahman Ibrahim Abushouk, Mostafa Wanees Ahmed El-Husseny, Eshak I Bahbah, Ahmed Elmaraezy, Aya Ashraf Ali, Asmaa Ashraf, Mohamed M Abdel-Daim
Heart failure (HF) is a common clinical syndrome that affects more than 23 million individuals worldwide. Despite the marked advances in its management, the mortality rates in HF patients have remained unacceptably high. Peroxisome proliferator-activated receptors (PPARs) are nuclear transcription regulators, involved in the regulation of fatty acid and glucose metabolism. PPAR agonists are currently used for the treatment of type II diabetes mellitus and hyperlipidemia; however, their role as therapeutic agents for HF remains under investigation...
September 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28884888/foxp1-haploinsufficiency-phenotypes-beyond-behavior-and-intellectual-disability
#10
Angela Myers, Christèle du Souich, Connie L Yang, Lior Borovik, Jill Mwenifumbo, Rosemarie Rupps, Causes Study, Anna Lehman, Cornelius F Boerkoel
The forkhead box (FOX) transcription factors have roles in development, carcinogenesis, metabolism, and immunity. In humans FOXP1 mutations have been associated with language and speech defects, intellectual disability, autism spectrum disorder, facial dysmorphisms, and congenital anomalies of the kidney and urinary tract. In mice, Foxp1 plays critical roles in development of the spinal motor neurons, lymphocytes, cardiomyocytes, foregut, and skeleton. We hypothesized therefore that mutations of FOXP1 affect additional tissues in some humans...
September 8, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28883902/sirt1-activation-by-resveratrol-alleviates-cardiac-dysfunction-via-mitochondrial-regulation-in-diabetic-cardiomyopathy-mice
#11
Sai Ma, Jing Feng, Ran Zhang, Jiangwei Chen, Dong Han, Xiang Li, Bo Yang, Xiujuan Li, Miaomiao Fan, Congye Li, Zuhong Tian, Yabin Wang, Feng Cao
BACKGROUND: Diabetic cardiomyopathy (DCM) is a major threat for diabetic patients. Silent information regulator 1 (SIRT1) has a regulatory effect on mitochondrial dynamics, which is associated with DCM pathological changes. Our study aims to investigate whether resveratrol, a SRIT1 activator, could exert a protective effect against DCM. METHODS AND RESULTS: Cardiac-specific SIRT1 knockout (SIRT1(KO)) mice were generated using Cre-loxP system. SIRT1(KO) mice displayed symptoms of DCM, including cardiac hypertrophy and dysfunction, insulin resistance, and abnormal glucose metabolism...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28883044/beneficial-effects-of-exercise-training-in-heart-failure-are-lost-in-male-diabetic-rats
#12
Dalila Boudia, Valérie Domergue, Phlippe Mateo, Loubina Fazal, Mathilde Prud'homme, Heloise Prigent, Claude Delcayre, Alain Cohen-Solal, Anne Garnier, Renee Ventura-Clapier, Jane-Lise Samuel
Exercise training has been demonstrated to have beneficial effects in patients with heart failure (HF) or diabetes. However, it is unknown whether diabetic patients with HF will benefit from exercise training. Male Wistar rats were fed either a standard (Sham, n= 53) or high-fat, high-sucrose (HFHS) diet (D, n=66) for 6 months. After 2 months of diet, the rats were already diabetic. Rats were then randomly subjected to either myocardial infarction by coronary artery ligation (MI) or sham operation (Sham). Two months later, heart failure was documented by echocardiography and animals were randomly subjected to exercise training with treadmill for eight additional weeks or remained sedentary...
September 7, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28864889/methylglyoxal-derived-advanced-glycation-end-products-contribute-to-negative-cardiac-remodeling-and-dysfunction-post-myocardial-infarction
#13
Nick J R Blackburn, Branka Vulesevic, Brian McNeill, Cagla Eren Cimenci, Ali Ahmadi, Mayte Gonzalez-Gomez, Aleksandra Ostojic, Zhiyuan Zhong, Michael Brownlee, Paul J Beisswenger, Ross W Milne, Erik J Suuronen
Advanced glycation end-products (AGEs) have been associated with poorer outcomes after myocardial infarction (MI), and linked with heart failure. Methylglyoxal (MG) is considered the most important AGE precursor, but its role in MI is unknown. In this study, we investigated the involvement of MG-derived AGEs (MG-AGEs) in MI using transgenic mice that over-express the MG-metabolizing enzyme glyoxalase-1 (GLO1). MI was induced in GLO1 mice and wild-type (WT) littermates. At 6 h post-MI, mass spectrometry revealed that MG-H1 (a principal MG-AGE) was increased in the hearts of WT mice, and immunohistochemistry demonstrated that this persisted for 4 weeks...
September 1, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28864535/mechanisms-in-endocrinology-cardiovascular-manifestations-of-primary-hyperparathyroidism-a-narrative-review
#14
Jessica Pepe, Cristiana Cipriani, Chiara Sonato, Orlando Raimo, Federica Biamonte, Salvatore Minisola
Data on cardiovascular disease in primary hyperparathyroidism (PHPT) are controversial; indeed, at present, cardiovascular involvement is not included among the criteria needed for parathyroidectomy. Aim of this narrative review is to analyze the available literature in an effort to better characterize cardiovascular involvement in PHPT. Due to physiological effects of both parathyroid hormone (PTH) and calcium on cardiomyocyte, cardiac conduction system, smooth vascular, endothelial and pancreatic beta cells, a number of data have been published regarding associations between symptomatic and mild PHPT with hypertension, arrhythmias, endothelial dysfunction (an early marker of atherosclerosis), glucose metabolism impairment and metabolic syndrome...
September 1, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28860122/exercise-induced-changes-in-glucose-metabolism-promote-physiologic-cardiac-growth
#15
Andrew A Gibb, Paul N Epstein, Shizuka Uchida, Yuting Zheng, Lindsey A McNally, Detlef Obal, Kartik Katragadda, Patrick J Trainor, Daniel J Conklin, Kenneth R Brittian, Michael T Tseng, Jianxun Wang, Steven P Jones, Aruni Bhatnagar, Bradford G Hill
Background -Exercise promotes metabolic remodeling in the heart, which is associated with physiologic cardiac growth; however, it is not known whether or how physical activity-induced changes in cardiac metabolism cause myocardial remodeling. In this study, we tested whether exercise-mediated changes in cardiomyocyte glucose metabolism are important for physiologic cardiac growth. Methods -We used radiometric, immunologic, metabolomic, and biochemical assays to measure changes in myocardial glucose metabolism in mice subjected to acute and chronic treadmill exercise...
August 31, 2017: Circulation
https://www.readbyqxmd.com/read/28853901/pharmacological-physiochemical-and-drug-relevant-biological-properties-of-short-chain-fatty-acid-hexosamine-analogs-used-in-metabolic-glycoengineering
#16
Christopher Saeui, Lingshu Liu, Esteban Urias, Justin Morrissette-McAlmon, Rahul Bhattacharya, Kevin J Yarema
In this study, we catalog structure activity relationships (SAR) of several short chain fatty acid (SCFA)-modified hexosamine analogues used in metabolic glycoengineering (MGE) by comparing in silico and experimental measurements of physiochemical properties important in drug design. We then describe the impact of these compounds on selected biological parameters that influence the pharmacological properties and safety of drug candidates by monitoring P-glycoprotein (Pgp) efflux, inhibition of cytochrome P450 3A4 (CYP3A4), hERG channel inhibition, and cardiomyocyte cytotoxicity...
August 30, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28842527/mechanisms-contributing-to-cardiac-remodelling
#17
REVIEW
Qing-Qing Wu, Yang Xiao, Yuan Yuan, Zhen-Guo Ma, Hai-Han Liao, Chen Liu, Jin-Xiu Zhu, Zheng Yang, Wei Deng, Qi-Zhu Tang
Cardiac remodelling is classified as physiological (in response to growth, exercise and pregnancy) or pathological (in response to inflammation, ischaemia, ischaemia/reperfusion (I/R) injury, biomechanical stress, excess neurohormonal activation and excess afterload). Physiological remodelling of the heart is characterized by a fine-tuned and orchestrated process of beneficial adaptations. Pathological cardiac remodelling is the process of structural and functional changes in the left ventricle (LV) in response to internal or external cardiovascular damage or influence by pathogenic risk factors, and is a precursor of clinical heart failure (HF)...
September 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28841455/cardiovascular-dysfunction-in-sepsis-at-the-dawn-of-emerging-mediators
#18
REVIEW
Consolato Sergi, Fan Shen, David W Lim, Weiyong Liu, Mingyong Zhang, Brian Chiu, Vijay Anand, Ziyong Sun
Subcellular dysfunction and impaired metabolism derived from the complex interaction of cytokines and mediators with cellular involvement are on the basis of the cardiovascular response to sepsis. The lethal consequences of an infection are intimately related to its ability to spread to other organ sites and the immune system of the host. About one century ago, William Osler (1849-1919), a Canadian physician, remarkably defined the sequelae of the host response in sepsis: "except on few occasions, the patient appears to die from the body's response to infection rather than from it...
August 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28837153/cardioprotective-effects-of-fibroblast-growth-factor-21-against-doxorubicin-induced-toxicity-via-the-sirt1-lkb1-ampk-pathway
#19
Shudong Wang, Yonggang Wang, Zhiguo Zhang, Quan Liu, Junlian Gu
Doxorubicin (DOX) is a highly effective antineoplastic anthracycline drug; however, the adverse effect of the cardiotoxicity has limited its widespread application. Fibroblast growth factor 21 (FGF21), as a well-known regulator of glucose and lipid metabolism, was recently shown to exert cardioprotective effects. The aim of this study was to investigate the possible protective effects of FGF21 against DOX-induced cardiomyopathy. We preliminarily established DOX-induced cardiotoxicity models in H9c2 cells, adult mouse cardiomyocytes, and 129S1/SyImJ mice, which clearly showed cardiac dysfunction and myocardial collagen accumulation accompanying by inflammatory, oxidative stress, and apoptotic damage...
August 24, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28835346/the-discovery-of-idx21437-design-synthesis-and-antiviral-evaluation-of-2-%C3%AE-chloro-2-%C3%AE-c-methyl-branched-uridine-pronucleotides-as-potent-liver-targeted-hcv-polymerase-inhibitors
#20
François-René Alexandre, Eric Badaroux, John P Bilello, Stéphanie Bot, Tony Bouisset, Guillaume Brandt, Sylvie Cappelle, Christopher Chapron, Dominique Chaves, Thierry Convard, Clément Counor, Daniel Da Costa, David Dukhan, Marion Gay, Gilles Gosselin, Jean-François Griffon, Kusum Gupta, Brenda Hernandez-Santiago, Massimiliano La Colla, Marie-Pierre Lioure, Julien Milhau, Jean-Laurent Paparin, Jérôme Peyronnet, Christophe Parsy, Claire Pierra Rouvière, Houcine Rahali, Rachid Rahali, Aurélien Salanson, Maria Seifer, Ilaria Serra, David Standring, Dominique Surleraux, Cyril B Dousson
Herein we describe the discovery of IDX21437 35b, a novel RPd-aminoacid-based phosphoramidate prodrug of 2'-α-chloro-2'-β-C-methyluridine monophosphate. Its corresponding triphosphate 6 is a potent inhibitor of the HCV NS5B RNA-dependent RNA polymerase (RdRp). Despite showing very weak activity in the in vitro Huh-7 cell based HCV replicon assay, 35b demonstrated high levels of active triphosphate 6 in mouse liver and human hepatocytes. A biochemical study revealed that the metabolism of 35b was mainly attributed to carboxyesterase 1 (CES1), an enzyme which is underexpressed in HCV Huh-7-derived replicon cells...
September 15, 2017: Bioorganic & Medicinal Chemistry Letters
keyword
keyword
110709
1
2
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"