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Cardiac injury

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https://www.readbyqxmd.com/read/28655154/risk-model-for-deaths-and-renal-replacement-therapy-dependence-in-patients-with-acute-kidney-injury-after-cardiac-surgery
#1
Shiren Sun, Feng Ma, Qiaoneng Li, Ming Bai, Yangping Li, Yan Yu, Chen Huang, Hanmin Wang, Xiaoxuan Ning
OBJECTIVES: Acute kidney injury (AKI) is a serious complication after cardiac surgery and is associated with increased in-hospital deaths. Renal replacement therapy (RRT) is becoming a routine strategy for severe AKI. Our goal was to evaluate the risk factors for death and RRT dependence in patients with AKI after cardiac surgery. METHODS: We included 190 eligible adult patients who had AKI following cardiac surgery and who required RRT at our centre from November 2010 to March 2015...
June 23, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28654892/intrinsic-remote-conditioning-of-the-myocardium-as-a-comprehensive-cardiac-response-to-ischemia-and-reperfusion
#2
Noemi Pavo, Dominika Lukovic, Katrin Zlabinger, David Lorant, Georg Goliasch, Johannes Winkler, Dietmar Pils, Katharina Auer, Hendrik Jan Ankersmit, Zoltán Giricz, Márta Sárközy, András Jakab, Rita Garamvölgyi, Maximilian Y Emmert, Simon P Hoerstrup, Derek J Hausenloy, Péter Ferdinandy, Gerald Maurer, Mariann Gyöngyösi
We have previously shown that distal anterior wall ischemia/reperfusion induces gene expression changes in the proximal anterior myocardial area, involving genes responsible for cardiac remodeling. Here we investigated the molecular signals of the ischemia non-affected remote lateral and posterior regions and present gene expression profiles of the entire left ventricle by using our novel and straightforward method of 2D and 3D image reconstruction. Five or 24h after repetitive 10min ischemia/reperfusion without subsequent infarction, pig hearts were explanted and myocardial samples from 52 equally distributed locations of the left ventricle were collected...
June 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28654509/pi3ks-in-diabetic-cardiomyopathy
#3
Mingchuan Li, Alessandra Murabito, Alessandra Ghigo, Emilio Hirsch
Diabetic cardiomyopathy is a heart disease in diabetic patients, identified as ventricular dysfunction in the absence of coronary artery disease and hypertension. The molecular mechanisms underlying diabetic cardiomyopathy are still poorly understood. The protein and lipid kinase phosphoinositide 3-kinases (PI3Ks) have been suggested to regulate cardiac injury during diabetes. In this review, we will summarize the role of different PI3K isoforms and of their downstream signaling in the pathogenesis of diabetic cardiomyopathy, including the regulation of cardiac metabolism, contractility, hypertrophy, myocardial cell death and inflammation...
June 22, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28652675/eosinophilic-myocarditis-and-hypereosinophilic-syndrome
#4
Hanane Boussir, Amine Ghalem, Nabila Ismaili, Noha El Ouafi
Hypereosinophilic syndrome (HES) is a heterogeneous group of hematological disorders characterized by a chronic, unexplained hypereosinophilia with tissue damage. Cardiac involvement occurs in ∼20% of patients with HES and represents a major turning point. Cardiac injuries related to eosinophilia are divided into three chronological phases: eosinophilic infiltration, thrombosis, and fibrosis. We report a case of a 33-year-old woman diagnosed with HES, with pulmonary and gastrointestinal involvement and eosinophilic myocarditis in cardiogenic shock...
July 2017: Journal of the Saudi Heart Association
https://www.readbyqxmd.com/read/28652542/therapeutic-potential-of-ghrelin-and-des-acyl-ghrelin-against-chemotherapy-induced-cardiotoxicity
#5
Miki Nonaka, Nagomi Kurebayashi, Takashi Murayama, Masami Sugihara, Kiyoshi Terawaki, Seiji Shiraishi, Kanako Miyano, Hiroshi Hosoda, Shosei Kishida, Kenji Kangawa, Takashi Sakurai, Yasuhito Uezono
Cancer was considered an incurable disease for many years; however, with the development of anticancer drugs and state-of-the art technologies, it has become curable. Cardiovascular diseases in patients with cancer or induced by cancer chemotherapy have recently become a great concern. Certain anticancer drugs and molecular targeted therapies cause cardiotoxicity, which limit the widespread implementation of cancer treatment and decrease the quality of life in cancer patients significantly. The anthracycline doxorubicin (DOX) causes cardiotoxicity...
2017: Endocrine Journal
https://www.readbyqxmd.com/read/28651648/the-risk-of-oxygen-during-cardiac-surgery-rocs-trial-study-protocol-for-a-randomized-clinical-trial
#6
Marcos G Lopez, Mias Pretorius, Matthew S Shotwell, Robert Deegan, Susan S Eagle, Jeremy M Bennett, Bantayehu Sileshi, Yafen Liang, Brian J Gelfand, Adam J Kingeter, Kara K Siegrist, Frederick W Lombard, Tiffany M Richburg, Dane A Fornero, Andrew D Shaw, Antonio Hernandez, Frederic T Billings
BACKGROUND: Anesthesiologists administer excess supplemental oxygen (hyper-oxygenation) to patients during surgery to avoid hypoxia. Hyper-oxygenation, however, may increase the generation of reactive oxygen species and cause oxidative damage. In cardiac surgery, increased oxidative damage has been associated with postoperative kidney and brain injury. We hypothesize that maintenance of normoxia during cardiac surgery (physiologic oxygenation) decreases kidney injury and oxidative damage compared to hyper-oxygenation...
June 26, 2017: Trials
https://www.readbyqxmd.com/read/28651598/protective-effects-of-xinji-erkang-on-myocardial-infarction-induced-cardiac-injury-in-mice
#7
Juan Hu, Yong-Xue Zhang, Li Wang, Ling Ding, Guang-Yao Huang, Guo-Wei Cai, Shan Gao
BACKGROUND: Myocardial infarction (MI) is a major risk factor responsible for morbidity and mortality. Xinji'erkang (XJEK) has been clinically used as an effective medication in the treatment of coronary heart disease and myocarditis. The purpose of this study was to investigate the cardioprotective effect of Xinji'erkang on MI mice. METHODS: Forty male mice were randomly assigned into four groups as follows (n = 10): sham, model, MI with administration of XJEK and fosinopril for four weeks...
June 26, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28651421/-effects-of-change-in-the-activity-of-vacuolar-adenosine-triphosphatase-of-myocardial-lysosome-on-myocardial-damage-in-rats-after-severe-burn-and-its-mechanism
#8
X P Yan, D X Zhang, T T Yan, Q Zhang, J Z Jia, Y S Huang
Objective: To explore the effects of change of activity of vacuolar adenosine triphosphatase (V-ATPase) of myocardial lysosome on myocardial damage in rats after severe burn and its mechanism. Methods: The myocardial lysosomes were extracted from the hearts of 12 SD rats with ultra-high speed gradient density centrifugation, then Western blotting and transmission electron microscope observation were conducted for identification. One hundred and twenty rats were divided into pure burn group, ATP group, normal control group, and bafilomycin group according to the random number table, with 30 rats in each group...
May 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28650345/preexisting-endothelial-cells-mediate-cardiac-neovascularization-after-injury
#9
Lingjuan He, Xiuzhen Huang, Onur Kanisicak, Yi Li, Yue Wang, Yan Li, Wenjuan Pu, Qiaozhen Liu, Hui Zhang, Xueying Tian, Huan Zhao, Xiuxiu Liu, Shaohua Zhang, Yu Nie, Shengshou Hu, Xiang Miao, Qing-Dong Wang, Fengchao Wang, Ting Chen, Qingbo Xu, Kathy O Lui, Jeffery D Molkentin, Bin Zhou
The mechanisms that promote the generation of new coronary vasculature during cardiac homeostasis and after injury remain a fundamental and clinically important area of study in the cardiovascular field. Recently, it was reported that mesenchymal-to-endothelial transition (MEndoT) contributes to substantial numbers of coronary endothelial cells after myocardial infarction. Therefore, the MEndoT has been proposed as a paradigm mediating neovascularization and is considered a promising therapeutic target in cardiac regeneration...
June 26, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28650344/the-relationship-between-cardiac-endothelium-and-fibroblasts-it-s-complicated
#10
Ravi Karra, Agoston O Walter, Sean M Wu
Coronary revascularization is an effective means of treating ischemic heart disease; however, current therapeutic revascularization strategies are limited to large caliber vessels. Because the mammalian heart scars following cardiac injury, recent work showing that cardiac fibroblasts can transdifferentiate into new coronary endothelium raises a new and exciting approach to promoting endogenous revascularization following cardiac injury. In this issue of the JCI, He et al. report on their employment of a battery of lineage-tracing tools to address the developmental origins of fibroblasts that give rise to new endothelial cells...
June 26, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28650112/liver-graft-preservation-using-perfluorocarbon-improves-the-outcomes-of-simulated-donation-after-cardiac-death-liver-transplantation-in-rats
#11
Shinya Okumura, Tadahiro Uemura, Xiangdong Zhao, Yuki Masano, Tatsuaki Tsuruyama, Yasuhiro Fujimoto, Taku Iida, Shintaro Yagi, Dmitri Bezinover, Bruce Spiess, Toshimi Kaido, Shinji Uemoto
INTRODUCTION: The outcomes of liver transplantation from donation after cardiac death (DCD) donors remain poor due to the severe warm ischemic injury. Perfluorocarbon (PFC) is a novel compound with high oxygen carrying capacity. In the present study, a rat model simulating DCD liver transplantation was used, and the impact of improved graft oxygenation provided by PFC addition on liver ischemia-reperfusion injury (IRI) and survival after DCD liver transplantation was investigated. MATERIAL AND METHODS: Orthotopic liver transplants were performed in male Lewis rats, using DCD liver grafts preserved with cold University of Wisconsin (UW) solution in the control group and preserved with cold oxygenated UW solution with addition of 20% PFC in the PFC group...
June 26, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28649106/-aging-and-homeostasis-aging-control-through-cardiac-regenerative-medicine
#12
Katsuhisa Matsuura
Heart disease is one of the leading causes of death in the developed countries and various physical conditions in heart failure attribute to the impaired physical activities, which promotes aging. The principle cause of heart failure is the loss of self-renewal ability of cardiomyocytes in various injuries such as myocardial infarction. The replacement of injured tissues with the regenerated human myocardial tissues using technologies on tissue engineering and iPS cell will provide us the novel therapeutic strategy for heart failure and the related aging issues...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28648466/prevalence-of-cardiovascular-and-respiratory-complications-following-trauma-in-patients-with-obesity
#13
Teresa Bell, Samantha Stokes, Peter C Jenkins, LeRanna Hatcher, Alison M Fecher
BACKGROUND: It is generally accepted that obesity puts patients at an increased risk for cardiovascular and respiratory complications after surgical procedures. However, in the setting of trauma, there have been mixed findings in regards to whether obesity increases the risk for additional complications. OBJECTIVE: The aim of this study was to identify whether obese patients suffer an increased risk of cardiac and respiratory complications following traumatic injury...
June 22, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28647372/delta-opioid-receptor-agonist-attenuates-lipopolysaccharide-induced-myocardial-injury-by-regulating-autophagy
#14
Pin Zhao, Jianke Kuai, Jinjian Gao, Li Sun, Yan Wang, Linong Yao
BACKGROUND: Previous studies have described the protective effects of DADLE on myocardial injury in sepsis. Recently, autophagy has been shown to be an innate defense mechanism in sepsis-related myocardial injury. However, whether DADLE has an pro-autophagic effect is yet to be elucidated. The present study aimed to investigate the effect of DADLE on the regulation of autophagy during sepsis. METHODS: Male mice were subjected to LPS or vehicle intraperitoneal injection...
June 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28646026/exosomes-promising-sacks-for-treating-ischemic-heart-disease
#15
Gui-Hao Chen, Jun Xu, Yue-Jin Yang
Ischemic heart disease(IHD) is the leading cause of death worldwide. Despite development of continuously improving therapeutic strategies, morbidity and mortality of patients with IHD remains relatively high. Exosomes are a subpopulation of vesicles that are universally recognized as major mediators in intercellular communication. Numerous preclinical studies showed that these tiny vesicles were protective in IHD, through such actions as alleviating myocardial ischemia/reperfusion injury, promoting angiogenesis, inhibiting fibrosis and facilitating cardiac regeneration...
June 23, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28645882/cardiopreventive-effect-of-ethanolic-extract-of-date-palm-pollen-against-isoproterenol-induced-myocardial-infarction-in-rats-through-the-inhibition-of-the-angiotensin-converting-enzyme
#16
Amal Daoud, Fedia Ben Mefteh, Kais Mnafgui, Mouna Turki, Salwa Jmal, Rawdha Ben Amar, Fatma Ayadi, Abdelfattah ElFeki, Leila Abid, Mostafa E Rateb, Lassaad Belbahri, Adel Kadri, Neji Gharsallah
The present study aimed to examine the putative preventive effect of the ethanolic extract Date Palm Pollen (DPP, Phoenix dactylifera L., family Arecaceae) on isoproterenol-induced myocardial infarction (MI) in rats. Twenty four rats were randomly divided into four groups including control. They were treated with DPP extract (400mg/kg) and clopidogrel (0.2mg/kg) for 7days followed by myocardial injury induction using subcutaneous isoproterenol (100mg/kg) with an interval of 24h for two days (6th and 7th day)...
June 20, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28645478/a-tspo-ligand-prevents-mitochondrial-sterol-accumulation-and-dysfunction-during-myocardial-ischemia-reperfusion-in-hypercholesterolemic-rats
#17
Julien Musman, Stéphanie Paradis, Mathieu Panel, Sandrine Pons, Caroline Barau, Claudio Caccia, Valerio Leoni, Bijan Ghaleh, Didier Morin
A major cause of cell death during myocardial ischemia-reperfusion is mitochondrial dysfunction. We previously showed that the reperfusion of an ischemic myocardium was associated with an accumulation of cholesterol into mitochondria and a concomitant strong generation of auto-oxidized oxysterols. The inhibition of mitochondrial accumulation of cholesterol abolished the formation of oxysterols and prevented mitochondrial injury at reperfusion. The aim of this study was to investigate the impact of hypercholesterolemia on sterol and oxysterol accumulation in rat cardiac cytosols and mitochondria and to analyse the effect of the translocator protein ligand 4'-chlorodiazepam on this accumulation and mitochondrial function...
June 20, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28644903/changes-in-remote-myocardial-tissue-after-acute-myocardial-infarction-and-its-relation-to-cardiac-remodeling-a-cmr-t1-mapping-study
#18
P Stefan Biesbroek, Raquel P Amier, Paul F A Teunissen, Mark B M Hofman, Lourens F H J Robbers, Peter M van de Ven, Aernout M Beek, Albert C van Rossum, Niels van Royen, Robin Nijveldt
OBJECTIVES: To characterize the temporal alterations in native T1 and extracellular volume (ECV) of remote myocardium after acute myocardial infarction (AMI), and to explore their relation to left ventricular (LV) remodeling. METHODS: Forty-two patients with AMI successfully treated with primary PCI underwent cardiovascular magnetic resonance after 4-6 days and 3 months. Cine imaging, late gadolinium enhancement, and T1-mapping (MOLLI) was performed at 1.5T. T1 values were measured in the myocardial tissue opposite of the infarct area...
2017: PloS One
https://www.readbyqxmd.com/read/28644823/eeg-characteristics-in-cooled-and-rewarmed-periods-in-post-cardiac-arrest-therapeutic-hypothermia-patients
#19
K Kim, Kimberly L Pargeon, Amy S Labar, Oren Friedman, Padmaja N Kandula, Douglas R Labar
PURPOSE: Continuous video EEG is a tool to assess brain function in injuries, including cardiac arrest (CA). In post-CA therapeutic hypothermia (TH) studies, some EEG features are linked to poor prognosis, but the evolvement of EEG characteristics during two temperature phases and its significance is unclear. We systematically analyzed EEG characteristics in cooled and rewarmed phases of post-CA therapeutic hypothermia patients and investigated their correlation to patient outcome. METHODS: This is a retrospective study of EEG analyses, from a single academic center, of 20 patients who underwent CA and therapeutic hypothermia...
July 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28643438/knockdown-of-mtfp1-can-minimize-doxorubicin-cardiotoxicity-by-inhibiting-dnm1l-mediated-mitochondrial-fission
#20
Lynn H H Aung, Ruibei Li, Bellur S Prabhakar, Peifeng Li
The long-term usage of doxorubicin (DOX) is largely limited due to the development of severe cardiomyopathy. Many studies indicate that DOX-induced cardiac injury is related to reactive oxygen species generation and ultimate activation of apoptosis. The role of novel mitochondrial fission protein 1 (Mtfp1) in DOX-induced cardiotoxicity remains elusive. Here, we report the pro-mitochondrial fission and pro-apoptotic roles of Mtfp1 in DOX-induced cardiotoxicity. DOX up-regulates the Mtfp1 expression in HL-1 cardiac myocytes...
June 23, 2017: Journal of Cellular and Molecular Medicine
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