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Cardiac injury

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https://www.readbyqxmd.com/read/29045806/safety-of-magnetic-resonance-imaging-in-patients-with-legacy-pacemakers-and-defibrillators-and-abandoned-leads
#1
Deepak Padmanabhan, Danesh K Kella, Ramila Mehta, Suraj Kapa, Deshmukh Abhishek, Siva Mulpuru, Allan S Jaffe, Joel P Felmlee, Mary L Jondal, Connie M Dalzell, Samuel J Asirvatham, Yong-Mei Cha, Robert E Watson, Paul A Friedman
BACKGROUND: During magnetic resonance imaging (MRI), abandoned leads may act as antennae that result in tissue heating and arrhythmia induction. OBJECTIVES: To assess the safety of MRI in patients with abandoned leads, with the addition of cardiac troponin T (CTnT) assessment to screen for myocardial damage. METHODS: We reviewed our prospectively collected database of patients with CIEDs undergoing MRI between 2008-2017 at Mayo Clinic, Rochester, Minnesota and selected patients who had abandoned leads...
October 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29045610/high-sensitivity-cardiac-troponin-i-and-risk-of-heart-failure-in-patients-with-suspected-acute-coronary-syndrome-a-cohort-study
#2
Dominik Stelzle, Anoop S V Shah, Atul Anand, Fiona E Strachan, Andrew R Chapman, Martin A Denvir, Nicholas L Mills, David A McAllister
Aims: Heart failure may occur following acute myocardial infarction, but with the use of high-sensitivity cardiac troponin assays we increasingly diagnose patients with minor myocardial injury. Whether troponin concentrations remain a useful predictor of heart failure in patients with acute coronary syndrome is uncertain. Methods and results: We identified all consecutive patients (n = 4748) with suspected acute coronary syndrome (61 ± 16 years, 57% male) presenting to three secondary and tertiary care hospitals...
July 19, 2017: European Heart Journal. Quality of Care & Clinical Outcomes
https://www.readbyqxmd.com/read/29045467/the-dose-of-hydroxyethyl-starch-6-130-0-4-for-fluid-therapy-and-the-incidence-of-acute-kidney-injury-after-cardiac-surgery-a-retrospective-matched-study
#3
Mona Momeni, Lompoli Nkoy Ena, Michel Van Dyck, Amine Matta, David Kahn, Dominique Thiry, André Grégoire, Christine Watremez
The safety of hydroxyethyl starches (HES) is still under debate. No studies have compared different dosing regimens of HES in cardiac surgery. We analyzed whether the incidence of Acute Kidney Injury (AKI) differed taking into account a weight-adjusted cumulative dose of HES 6% 130/0.4 for perioperative fluid therapy. This retrospective cohort study included all adult patients undergoing elective or emergency cardiac surgery with or without cardiopulmonary bypass. Exclusion criteria were patients on renal replacement therapy (RRT), cardiac trauma surgery, heart transplantation, patients with ventricular assist devices, subjects who required a surgical revision for bleeding and those whose medical records were incomplete...
2017: PloS One
https://www.readbyqxmd.com/read/29045076/outside-in-hla-class-i-signaling-regulates-icam-1-clustering-and-endothelial-monocyte-interactions-via-mtor-in-transplant-antibody-mediated-rejection
#4
Sahar Salehi, Rebecca A Sosa, Yi-Ping Jin, Shoichi Kageyama, Michael C Fishbein, Enrique Rozengurt, Jerzy W Kupiec-Weglinski, Elaine F Reed
Antibody-mediated rejection (AMR) resulting in transplant allograft vasculopathy (TAV) is the major obstacle for long-term survival of solid organ transplants. AMR is caused by donor-specific antibodies to HLA which contribute to TAV by initiating outside-in signaling transduction pathways that elicit monocyte recruitment to activated endothelium. Mechanistic target of rapamycin (mTOR) inhibitors can attenuate TAV; therefore, we sought to understand the mechanistic underpinnings of mTOR signaling in HLA class I Ab-mediated endothelial cell activation and monocyte recruitment...
October 17, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29044290/protease-activated-receptor-par-4-an-inducible-switch-between-thrombosis-and-vascular-inflammation
#5
Anke C Fender, Bernhard H Rauch, Tobias Geisler, Karsten Schrör
Thrombin triggers activation of platelets through protease-activated receptor 1 (PAR-1) and PAR-4. Both receptors are widely expressed and exert multiple platelet-independent functions. PAR signalling contributes to healing responses after injury, by promoting cytokine activity and cellular growth and mobility. Uncontrolled PAR activation, however, can prevent timely resolution of inflammation, enhance thrombogenic endothelial function and drive adverse remodelling. The specific role of PAR-4 in thromboinflammatory vascular disease has been largely underestimated, given the relatively limited expression of PAR-4 in non-platelet cells under healthy conditions...
October 10, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29044182/long-term-intake-of-pasta-containing-barley-1-3-beta-d-glucan-increases-neovascularization-mediated-cardioprotection-through-endothelial-upregulation-of-vascular-endothelial-growth-factor-and-parkin
#6
Valentina Casieri, Marco Matteucci, Claudia Cavallini, Milena Torti, Michele Torelli, Vincenzo Lionetti
Barley (1-3)β-D-Glucan (BBG) enhances angiogenesis. Since pasta is very effective in providing a BBG-enriched diet, we hypothesized that the intake of pasta containing 3% BBG (P-BBG) induces neovascularization-mediated cardioprotection. Healthy adult male C57BL/6 mice fed P-BBG (n = 15) or wheat pasta (Control, n = 15) for five-weeks showed normal glucose tolerance and cardiac function. With a food intake similar to the Control, P-BBG mice showed a 109% survival rate (P < 0.01 vs. Control) after cardiac ischemia (30 min)/reperfusion (60 min) injury...
October 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29043508/the-role-of-pi3k%C3%AE-isoform-in-cardioprotection
#7
Xavier Rossello, Jaime A Riquelme, Zhenhe He, Stasa Taferner, Bart Vanhaesebroeck, Sean M Davidson, Derek M Yellon
Ischemic preconditioning (IPC) limits myocardial infarct size through the activation of the PI3K-Akt signal cascade; however, little is known about the roles of individual PI3K isoforms in cardioprotection. We aimed, therefore, to elucidate the role of the PI3Kα isoform in cardioprotection Pharmacological PI3Kα inhibition was assessed in isolated-perfused mouse hearts subjected to ischemia/reperfusion injury (IRI), either during the IPC procedure or at reperfusion. PI3Kα inhibition abrogated the IPC-induced protective effect at reperfusion, but not when given only during the IPC protocol...
October 17, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29042968/hesperetin-alleviates-renal-interstitial-fibrosis-by-inhibiting-tubular-epithelial-mesenchymal-transition-in-vivo-and-in-vitro
#8
Hong-Wei Wang, Lei Shi, Yan-Ping Xu, Xing-Ya Qin, Qi-Zhi Wang
Hesperetin (HES) is a flavonoid that has been reported to exert protective effects against cardiac remodeling, lung fibrosis and hepatic fibrosis. However, reports on the effects and potential mechanisms of HES in renal fibrosis are limited. In the present study, a unilateral ureteric obstruction (UUO) mouse model and a transforming growth factor (TGF)-β1-activated normal rat kidney (NRK)-52E cell model were established. HES was subsequently administered to these models to evaluate its anti-fibrotic effects and potential underlying mechanisms of action...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042932/cardioprotective-effect-of-notch-signaling-on-the-development-of-myocardial-infarction-complicated-by-diabetes-mellitus
#9
Fang Wu, Bo Yu, Xu Zhang, Yuelan Zhang
The present study aimed to elucidate the role of Notch signaling in the development of myocardial infarction (MI) concomitant with diabetes in vivo and in vitro and evaluated the therapeutic effect of the Notch signaling in vitro. Streptozotocin-induced diabetic rats were subjected to 25 min of ischemia and 2 h of reperfusion. Cardiac troponin T (cTnT) and creatine kinase-MB (CK-MB) isoenzyme levels were detected. Infarct size was measured by 2,3,5-triphenyltetrazolium chloride staining. Myocardial apoptosis and fibrosis were examined by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling and Masson Trichrome staining, respectively...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29040818/metformin-attenuates-er-stress-induced-mitochondrial-dysfunction
#10
Qun Chen, Jeremy Thompson, Ying Hu, Anindita Das, Edward J Lesnefsky
Endoplasmic reticulum (ER) stress, a disturbance of the ER function, contributes to cardiac injury. ER and mitochondria are closely connected organelles within cells. ER stress contributes to mitochondrial dysfunction, which is a key factor to increase cardiac injury. Metformin, a traditional anti-diabetic drug, decreases cardiac injury during ischemia-reperfusion. Metformin also inhibits ER stress in cultured cells. We hypothesized that metformin can attenuate the ER stress-induced mitochondrial dysfunction and subsequent cardiac injury...
September 28, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29040423/title-therapeutic-strategies-utilising-sdf-1%C3%AE-in-ischaemic-cardiomyopathy
#11
Oliver J Ziff, Daniel I Bromage, Derek M Yellon, Sean M Davidson
Heart failure is rapidly increasing in prevalence and will redraw the global landscape for cardiovascular health. Alleviating and repairing cardiac injury associated with myocardial infarction (MI) is key to improving this burden. Homing signals mobilise and recruit stem cells to the ischaemic myocardium where they exert beneficial paracrine effects. The chemoattractant cytokine SDF-1α and its associated receptor CXCR4 are upregulated after MI and appear to be important in this context. Activation of CXCR4 promotes both cardiomyocyte survival and stem cell migration towards the infarcted myocardium...
October 13, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29040168/failure-of-isoflurane-cardiac-preconditioning-in-obese-type-2-diabetic-mice-involves-aberrant-regulation-of-microrna-21-endothelial-nitric-oxide-synthase-and-mitochondrial-complex-i
#12
Zhi-Dong Ge, Yingchuan Li, Shigang Qiao, Xiaowen Bai, David C Warltier, Judy R Kersten, Zeljko J Bosnjak, Mingyu Liang
BACKGROUND: Diabetes impairs the cardioprotective effect of volatile anesthetics, yet the mechanisms are still murky. We examined the regulatory effect of isoflurane on microRNA-21, endothelial nitric-oxide synthase, and mitochondrial respiratory complex I in type II diabetic mice. METHODS: Myocardial ischemia/reperfusion injury was produced in obese type 2 diabetic (db/db) and C57BL/6 control mice ex vivo in the presence or absence of isoflurane administered before ischemia...
October 17, 2017: Anesthesiology
https://www.readbyqxmd.com/read/29039568/3-3-%C3%A2-diindolylmethane-attenuates-cardiomyocyte-hypoxia-by-modulating-autophagy-in-h9c2-cells
#13
Kai Liang, Wen-Hao Qian, Jing Zong
Autophagy is activated in the ischemic heart and is a process that is essential for survival, differentiation, development and homeostasis. 3,3'‑Diindolylmethane (DIM) is a natural product of the acid‑catalyzed condensation of indole‑3‑carbinol in cruciferous vegetables. Numerous studies have suggested that DIM has various pharmacological effects, including antioxidant, antitumor, anti‑angiogenic and anti‑apoptotic properties. However, the function of DIM on hypoxia‑induced cardiac injury remains to be elucidated...
October 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039548/-corrigendum-farnesoid-x-receptor-deletion-improves-cardiac-function-structure-and-remodeling-following-myocardial-infarction-in-mice
#14
Jianshu Gao, Xiaoqiang Liu, Bingjian Wang, Haiyan Xu, Qiang Xia, Tianfei Lu, Fang Wang
Following the publication of this article, an interested reader drew to our attention that we had incorrectly reported (in the Materials and methods section, 'Western blot analysis', on p. 674) that the anti-farnesoid X receptor (FXR) antibody of Cell Signalling Technology, Inc., cat. no. #12295, had been used in this study to probe for FXR. In fact, the antibodies used in the above-mentioned study were a gift from the group of Dr Xin-Liang Ma at Thomas Jefferson University (Philadelphia, PA, USA), as referenced in the following article: [Pul J, Yuan A, Shan P, Gao E, Wang X, Wang Y, Lau WB, Koch W, Xin-Ma XL and He B: Cardiomyocyte-expressed farnesoid-X-receptor is a novel apoptosis mediator and contributes to myocardial ischaemia/reperfusion injury...
October 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039516/baicalin-alleviates-h2o2%C3%A2-induced-injury-of-h9c2-cardiomyocytes-through-suppression-of-the-wnt-%C3%AE-%C3%A2-catenin-signaling-pathway
#15
Liman Qiu, Jinxiao Chen, Jing Lin, Da Wo, Jianfeng Chu, Jun Peng
Baicalin is one of the active ingredients extracted from the dry root of Scutellaria baicalensis Georgi, which has been reported to be effective in preventing myocardial ischemia reperfusion injury. However, the mechanisms underlying its cardioprotective activities remain to be elucidated. In the present study, H2O2‑treated cardiomyocyte H9c2 cell line served as an in vitro model of oxidation‑damaged cardiomyocytes to evaluate the effects of baicalin on the cardiac injury, and to investigate the underlying molecular mechanism...
October 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039506/hypothermic-machine-perfusion-ameliorates-inflammation-during-ischemia%C3%A2-reperfusion-injury-via-sirtuin%C3%A2-1%C3%A2-mediated-deacetylation-of-nuclear-factor%C3%A2-%C3%AE%C2%BAb-p65-in-rat-livers-donated-after-circulatory-death
#16
Cheng Zeng, Xiaoyan Hu, Weiyang He, Yanfeng Wang, Ling Li, Yan Xiong, Qifa Ye
Hypothermic machine perfusion (HMP) effectively reduces ischemia‑reperfusion injury (IRI) in livers donated after circulatory death (DCD) when compared with cold storage (CS). However, the underlying mechanisms remain unclear. The current study aimed to investigate the cellular mechanisms by which HMP ameliorates the inflammatory response during IRI. Adult male Sprague‑Dawley rat livers were exposed to 30 min of warm ischemia following cardiac arrest and preserved by CS or HMP for 3 h (n=3 per group)...
October 6, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29038971/the-implementation-of-targeted-temperature-management-an-evidence-based-guideline-from-the-neurocritical-care-society
#17
Lori Kennedy Madden, Michelle Hill, Teresa L May, Theresa Human, Mary McKenna Guanci, Judith Jacobi, Melissa V Moreda, Neeraj Badjatia
BACKGROUND: Targeted temperature management (TTM) is often used in neurocritical care to minimize secondary neurologic injury and improve outcomes. TTM encompasses therapeutic hypothermia, controlled normothermia, and treatment of fever. TTM is best supported by evidence from neonatal hypoxic-ischemic encephalopathy and out-of-hospital cardiac arrest, although it has also been explored in ischemic stroke, traumatic brain injury, and intracranial hemorrhage patients. Critical care clinicians using TTM must select appropriate cooling techniques, provide a reasonable rate of cooling, manage shivering, and ensure adequate patient monitoring among other challenges...
October 16, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/29038197/obstructive-coronary-artery-disease-in-patient-with-acute-thrombotic-thrombocytopenic-purpura
#18
Szymon L Wiernek, Xuming Dai
Thrombotic thrombocytopenic purpura (TTP) affects essentially all organ systems. Myocardial injury in TTP is often attributed to microthrombi formation. We present the first case report in the literature of an acute TTP patient with concomitant obstructive coronary artery disease (CAD) and acute myocardial infarction who underwent successful percutaneous coronary intervention (PCI). A 70-year-old female patient who was diagnosed with acute TTP required plasma exchange. The patient also experienced episodes of angina pectoris, elevated cardiac enzymes and global ST segment depressions on ECG...
October 15, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29036874/development-of-a-device-to-reduce-the-risk-of-injury-in-handling-unstable-loads
#19
Mohamed Zaki Ramadan, Mohammed Alkahtani
BACKGROUND: Manual material handling (MMH) task is the most common cause of work-related musculoskeletal disorders (MSDs). Operators carrying unstable loads were recently shown to be at greater risk of back injury compared to workers carrying stable loads. OBJECTIVE: This study focused on developing a device to minimize trunk muscle activity and cardiovascular demand while handling a 19-liter bottle. METHOD: After evaluating several designs, one was selected to be developed, manufactured and tested through an experimental study...
October 10, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/29035876/hydrogen-gas-attenuates-myocardial-ischemia-reperfusion-injury-independent-of-postconditioning-in-rats-by-attenuating-endoplasmic-reticulum-stress-induced-autophagy
#20
Yunan Gao, Hongxiao Yang, Jing Chi, Qiannan Xu, Luqi Zhao, Weijia Yang, Weifan Liu, Wei Yang
BACKGROUND/AIMS: To study the effect of inhaling hydrogen gas on myocardial ischemic/reperfusion(I/R) injury in rats. METHODS: Seventy male Wistar albino rats were divided into five groups at random as the sham group (Sham). The I/R group (I/R), The ischemic postconditioning group (IPo), The I/R plus hydrogen group (IH2) and the ischemic postconditioning plus hydrogen group (IPoH2). The Sham group was without coronary occlusion. In I/R group, Ischemic/reperfusion injury was induced by coronary occlusion for 1 hour...
October 16, 2017: Cellular Physiology and Biochemistry
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