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Cardiac injury

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https://www.readbyqxmd.com/read/28822963/%C3%AE-1a-subtype-adrenergic-agonist-therapy-for-failing-right-ventricle
#1
Patrick M Cowley, Guan-Ying Wang, Sunil K Joshi, Philip M Swigart, David H Lovett, Paul C Simpson, Anthony J Baker
Failure of the right ventricle (RV) is a serious disease with a poor prognosis and limited treatment options. Signaling by α1-adrenergic receptors (α1-ARs), in particular the α1A-subtype, mediate cardioprotective effects in multiple heart failure models. Recent studies show that chronic treatment with the α1A-subtype agonist A61603 improves function and survival in a model of LV failure. The goal of this study was to determine if chronic A61603 treatment is beneficial in a RV failure model. We used tracheal instillation of the fibrogenic antibiotic bleomycin in mice to induce pulmonary fibrosis, pulmonary hypertension, and RV failure within 2 wk...
August 19, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28822855/tetrandrine-cardioprotection-in-ischemia-reperfusion-i-r-injury-via-jak3-stat3-hexokinase-ii
#2
Tie-Jun Zhang, Rui-Xia Guo, Xia Li, Yan-Wei Wang, Yong-Jun Li
Tetrandrine(TET), a bisbenzylisoquinoline alkaloid has been used for the treatment of cardiovascular diseases and hypertension. This study was to investigate whether tetrandrine exerts cardioprotection in ischemia-reperfusion (I/R) injury and the mechanisms involved. The cardioprotection effect and mechanisms of tetrandrine was evaluated by I/R injury cardiac cell model. Hexokinase II (HKII) is the critical regulators of mitochondrial dysfunction in cardiac I/R injury and it participate in the regulation of glycolysis and energy metabolism...
August 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28822540/life-threatening-complications-and-mortality-of-minimally-invasive-pectus-surgery
#3
André Hebra, Robert E Kelly, Marcelo M Ferro, Mustafa Yüksel, Jose Ribas M Campos, Donald Nuss
The prevalence and type of life-threatening complications related to the minimally invasive repair of pectus excavatum (MIRPE) and bar removal are unknown and underreported. The purpose of this communication is to make surgeons aware of the risk of these life threatening complications as well as the modifications which have been developed to prevent them. METHODS: Data related to life-threatening complications of Pectus Excavatum (PE) patients was obtained from four sources: 1. A survey of Chest Wall International Group (CWIG) surgeons who specialize in repairing congenital chest wall malformations, 2...
July 31, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28822390/physiologic-features-of-brain-death
#4
Eno-Obong Essien, Kristina Fioretti, Thomas M Scalea, Deborah M Stein
Brain death is known to be associated with physiologic derangements but their incidence is poorly described. Knowledge of the changes that occur during brain death is important for management of the potential organ donor. Thus, we sought to characterize the pathophysiology that occurs during brain death in patients with traumatic injuries. All brain-dead patients over a 10-year period were identified from the trauma registry at a level 1 urban trauma center. Patient demographics, injury characteristics, and clinical data for defining organ dysfunction were reviewed for the 24 hours surrounding brain-death declaration...
August 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28821525/point-of-care-washing-of-allogeneic-red-blood-cells-for-the-prevention-of-transfusion-related-respiratory-complications-war-prc-a-protocol-for-a-multicenter-randomised-clinical-trial-in-patients-undergoing-cardiac-surgery
#5
Matthew A Warner, Ian J Welsby, Phillip J Norris, Christopher C Silliman, Sarah Armour, Erica D Wittwer, Paula J Santrach, Laurie A Meade, Lavonne M Liedl, Chelsea M Nieuwenkamp, Brian Douthit, Camille M van Buskirk, Phillip J Schulte, Rickey E Carter, Daryl J Kor
INTRODUCTION: The transfusion-related respiratory complications, transfusion-related acute lung injury (TRALI) and transfusion-associated circulatory overload (TACO), are leading causes of transfusion-related morbidity and mortality. At present, there are no effective preventive strategies with red blood cell (RBC) transfusion. Although mechanisms remain incompletely defined, soluble biological response modifiers (BRMs) within the RBC storage solution may play an important role. Point-of-care (POC) washing of allogeneic RBCs may remove these BRMs, thereby mitigating their impact on post-transfusion respiratory complications...
August 18, 2017: BMJ Open
https://www.readbyqxmd.com/read/28821332/interleukin-8-and-tumor-necrosis-factor-predict-acute-kidney-injury-after-pediatric-cardiac-surgery
#6
Christina A de Fontnouvelle, Jason H Greenberg, Heather R Thiessen-Philbrook, Michael Zappitelli, Jeremy Roth, Kathleen F Kerr, Prasad Devarajan, Michael Shlipak, Steven Coca, Chirag R Parikh
BACKGROUND: Inflammation is a key component of both acute kidney injury (AKI) and response to cardiopulmonary bypass. Because AKI poses risks to children after cardiac surgery, we investigated the value of inflammatory biomarkers interleukin-8 (IL-8) and tumor necrosis factor alpha (TNFα) for predicting AKI and other complications. METHODS: We enrolled 412 children between the ages of 1 month and 18 years undergoing cardiopulmonary bypass for cardiac surgery. We collected blood both preoperatively and postoperatively (within 6 hours post-surgery) and measured plasma IL-8 and TNFα...
August 16, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28821177/perioperative-care-of-cardiac-patients-preventing-myocardial-injury-bleeding-and-death
#7
Thomas F Lüscher
No abstract text is available yet for this article.
August 14, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28820027/atelectasis-after-airway-extubation-during-veno-arterial-extracorporeal-membrane-oxygenation-support
#8
Hong Wang, Ming Jia, Bin Mao, Xiaotong Hou
Veno-arterial extracorporeal membrane oxygenation (VA ECMO) is used in cardiopulmonary failure patients to provide temporary assisted circulation. Usually, prolonged intubation and invasive mechanical ventilation are required in patients with ECMO support. We report on two cases of patients who had no pre-existing injuries of the affected lung, underwent VA ECMO support after open-heart surgery and received airway extubation (AE) or awake ECMO with the recovery of left ventricular ejection fraction. Atelectasis happened after AE and non-invasive positive pressure ventilation attenuated the atelectasis of one patient...
September 2017: Perfusion
https://www.readbyqxmd.com/read/28819767/comparative-efficacy-of-drugs-for-preventing-acute-kidney-injury-after-cardiac-surgery-a-network-meta-analysis
#9
Xi Chen, Tianlun Huang, Xuan Cao, Gaosi Xu
BACKGROUND: Acute kidney injury (AKI) occurs frequently after cardiac surgery and has been associated with increased hospital length of stay, mortality, and costs. OBJECTIVE: We aimed to evaluate the efficacy of pharmacologic strategies for preventing AKI after cardiac surgery. METHODS: We searched PubMed, Embase, the Cochrane Central Register of Controlled Trials (CENTRAL) up to 6 May 2017 and the reference lists of relevant articles about trials...
August 17, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/28819689/beware-of-the-coronary-arteries-with-implantable-cardiac-electronic-devices
#10
REVIEW
S Serge Barold, Benjamin J Pang, Harry G Mond
The transvenous implantation of cardiac devices may sometimes cause serious complications involving the coronary arteries. The left anterior descending artery may be injured during nonapical right ventricular implantation while a right atrial lead may injure the right or circumflex coronary artery. Injury of a left internal mammary graft to a coronary artery may cause myocardial infarction.
August 17, 2017: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/28819543/diosmin-attenuates-methotrexate-induced-hepatic-renal-and-cardiac-injury-a-biochemical-and-histopathological-study-in-mice
#11
Mohamed M Abdel-Daim, Hesham A Khalifa, Abdelrahman Ibrahim Abushouk, Mohamed A Dkhil, Saleh A Al-Quraishy
The current study was designed to investigate the beneficial role of diosmin, a biologically active flavonoid, against methotrexate- (MTX-) induced hepatic, renal, and cardiac injuries in mice. Male Swiss albino mice received a single intraperitoneal injection of MTX (at 20 mg/kg, body weight) either alone or in combination with oral diosmin (at 50 or 100 mg/kg body weight, for 10 days). Serum was used to evaluate tissue injury markers, while hepatic, renal, and cardiac tissue samples were obtained for determination of antioxidant activity as well as histopathological examination...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28819303/automated-segmentation-of-light-sheet-fluorescent-imaging-to-characterize-experimental-doxorubicin-induced-cardiac-injury-and-repair
#12
René R Sevag Packard, Kyung In Baek, Tyler Beebe, Nelson Jen, Yichen Ding, Feng Shi, Peng Fei, Bong Jin Kang, Po-Heng Chen, Jonathan Gau, Michael Chen, Jonathan Y Tang, Yu-Huan Shih, Yonghe Ding, Debiao Li, Xiaolei Xu, Tzung K Hsiai
This study sought to develop an automated segmentation approach based on histogram analysis of raw axial images acquired by light-sheet fluorescent imaging (LSFI) to establish rapid reconstruction of the 3-D zebrafish cardiac architecture in response to doxorubicin-induced injury and repair. Input images underwent a 4-step automated image segmentation process consisting of stationary noise removal, histogram equalization, adaptive thresholding, and image fusion followed by 3-D reconstruction. We applied this method to 3-month old zebrafish injected intraperitoneally with doxorubicin followed by LSFI at 3, 30, and 60 days post-injection...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819000/hypoxia-induced-myocardial-regeneration
#13
Wataru Kimura, Yuji Nakada, Hesham A Sadek
The underlying cause of systolic heart failure is the inability of the adult mammalian heart to regenerate damaged myocardium. In contrast, some vertebrate species and immature mammals are capable of full cardiac regeneration following multiple types of injury through cardiomyocyte proliferation. Little is known about what distinguishes proliferative cardiomyocytes from terminally differentiated, non-proliferative cardiomyocytes. Recently, several reports have suggested that oxygen metabolism and oxidative stress play a pivotal role in regulating the proliferative capacity of mammalian cardiomyocytes...
August 17, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28818523/cognitive-impairments-and-subjective-cognitive-complaints-after-survival-of-cardiac-arrest-a-prospective-longitudinal-cohort-study
#14
Catherine V M Steinbusch, Caroline M van Heugten, Sascha M C Rasquin, Jeanine A Verbunt, Véronique R M Moulaert
BACKGROUND: Cardiac arrest can lead to hypoxic brain injury, which can affect cognitive functioning. OBJECTIVE: To investigate the course of objective and subjective cognitive functioning and their association during the first year after cardiac arrest. METHODS: A multi-centre prospective longitudinal cohort study with one year follow-up (measurements at two weeks, three months and one year). Cognitive functioning was measured with a neuropsychological test battery and subjective cognitive functioning with the Cognitive Failures Questionnaire...
August 14, 2017: Resuscitation
https://www.readbyqxmd.com/read/28818266/microrna-93-elevation-after-myocardial-infarction-is-cardiac-protective
#15
Kai Li, Tao Lin, Lingdan Chen, Neng Wang
Coronary Artery Disease (CAD) is one of the most serious diseases that endangers human health worldwide, myocardial infarction (MI) is an acute form of CAD. Recent developments in MI therapies have resulted in significant reductions in mortality. However, subsequent chronic congestive heart failure and ventricle remodeling plagues an increasing number of MI patients. MicroRNAs (miR) have been reported to be involved in the process of cardiac remodeling, a recent study shows that miR-93 is elevated in the blood of CAD patients...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28818210/clinical-use-of-high-sensitivity-cardiac-troponin-in-patients-with-suspected-myocardial-infarction
#16
REVIEW
Raphael Twerenbold, Jasper Boeddinghaus, Thomas Nestelberger, Karin Wildi, Maria Rubini Gimenez, Patrick Badertscher, Christian Mueller
High-sensitivity cardiac troponin (hs-cTn) assays have been used clinically by thousands of physicians in many countries throughout the world since their clinical introduction 7 years ago. In the early diagnosis of myocardial infarction (MI), beyond doubt, the most important indication of hs-cTn assays, these simple, inexpensive, and highly reproducible tools complement detailed clinical assessment including chest pain characteristics and the electrocardiogram. Hs-cTn assays for the first time allowed the precise quantification of cardiomyocyte injury around the 99th percentile and thereby substantially increased the accuracy of MI detection from blood obtained at presentation to the emergency department (ED)...
August 22, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28818206/pharmacological-and-activated-fibroblast%C3%A2-targeting-of-g%C3%AE-%C3%AE-grk2-after%C3%A2-myocardial-ischemia-attenuates-heart-failure-progression
#17
Joshua G Travers, Fadia A Kamal, Iñigo Valiente-Alandi, Michelle L Nieman, Michelle A Sargent, John N Lorenz, Jeffery D Molkentin, Burns C Blaxall
BACKGROUND: Cardiac fibroblasts are a critical cell population responsible for myocardial extracellular matrix homeostasis. Upon injury or pathological stimulation, these cells transform to an activated myofibroblast state and play a fundamental role in myocardial fibrosis and remodeling. Chronic sympathetic overstimulation, a hallmark of heart failure (HF), induces pathological signaling through G protein βγ (Gβγ) subunits and their interaction with G protein-coupled receptor kinase 2 (GRK2)...
August 22, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28817508/end-tidal-co2-guided-chest-compression-delivery-improves-survival-in-a-neonatal-asphyxial-cardiac-arrest-model
#18
Justin T Hamrick, Jennifer L Hamrick, Utpal Bhalala, Jillian S Armstrong, Jeong-Hoo Lee, Ewa Kulikowicz, Jennifer K Lee, Sapna R Kudchadkar, Raymond C Koehler, Elizabeth A Hunt, Donald H Shaffner
OBJECTIVES: To determine whether end-tidal CO2-guided chest compression delivery improves survival over standard cardiopulmonary resuscitation after prolonged asphyxial arrest. DESIGN: Preclinical randomized controlled study. SETTING: University animal research laboratory. SUBJECTS: 1-2-week-old swine. INTERVENTIONS: After undergoing a 20-minute asphyxial arrest, animals received either standard or end-tidal CO2-guided cardiopulmonary resuscitation...
August 16, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28816833/perioperative-use-of-erythromycin-reduces-cognitive-decline-after-coronary-artery-bypass-grafting-surgery-a-pilot-study
#19
Evanthia Thomaidou, Helena Argiriadou, Georgios Vretzakis, Kalliopi Megari, Nikolaos Taskos, Georgios Chatzigeorgiou, Kyriakos Anastasiadis
OBJECTIVES: Adverse neurologic outcome can be a debilitating complication after cardiac surgery. The aim of this study was to investigate the potential neuroprotective action of erythromycin, a well known antibiotic agent, regarding postoperative cognitive decline in patients undergoing cardiac surgery. METHODS: Forty patients scheduled for elective coronary artery bypass grafting surgery were prospectively randomly assigned in 2 groups: the erythromycin group (n = 19) who received erythromycin at a dose of 25 mg/kg before and after surgery and the control group (n = 21) who did not receive it...
August 14, 2017: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/28815865/bone-marrow-and-adipose-mesenchymal-stem-cells-attenuate-cardiac-fibrosis-induced-by-methotrexate-in-rats
#20
Ebtehal Mohammad Fikry, Wedad A Hassan, Amany M Gad
Mesenchymal stem cells (MSCs) are an ideal adult stem cell with capacity for self-renewal and differentiation with an extensive tissue distribution. The present study evaluates the therapeutic effects of bone marrow mesenchymal stem cells (BM-MSCs) or adipose-derived mesenchymal stem cells (AD-MSCs) against the development of methotrexate (MTX)-induced cardiac fibrosis versus dexamethasone (DEX). Rats were allocated into five groups; group 1, received normal saline orally; group 2, received MTX (14 mg/kg/week for 2 weeks); groups 3 and 4, treated once with 2 × 10(6) cells of MTX + BM-MSCs and MTX + AD-MSCs, respectively; and group 5, MTX + DEX (0...
August 16, 2017: Journal of Biochemical and Molecular Toxicology
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