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Cardiac injury

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https://www.readbyqxmd.com/read/29453401/endothelial-smoothened-dependent-hedgehog-signaling-is-not-required-for-sonic-hedgehog-induced-angiogenesis-or-ischemic-tissue-repair
#1
Rajesh Gupta, Alexander R Mackie, Sol Misener, Lijun Liu, Douglas W Losordo, Raj Kishore
Sonic Hedgehog (Shh) signaling induces neovascularization and angiogenesis. It is not known whether the hedgehog signaling pathway in endothelial cells is essential to angiogenesis. Smoothened (Smo) transduces hedgehog signaling across the cell membrane. This study assessed whether endothelial Smoothened-dependent Shh signaling is required for Shh-mediated angiogenesis and ischemic tissue repair. Endothelial-specific smoothened knockout mice, eSmo Null were created using Cre-lox recombination system. eSmo Null mice had no observable phenotype at baseline and showed normal cardiac function...
February 16, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29453108/telomeres-and-telomerase-in-heart-regeneration
#2
REVIEW
Esther Aix, Alex Gallinat, Ignacio Flores
Although recent advances have overturned the old view of the human heart as an inert postmitotic organ, it is clear that the adult heart´s capacity to regenerate after an ischemic episode is very limited. Unlike humans, zebrafish and other lower vertebrates vigorously regenerate damaged myocardium after cardiac injury. Understanding how the zebrafish is able to conserve life-long cardiac regeneration capacity while mammals lose it soon after birth is crucial for the development of new treatments for myocardial infarction...
February 3, 2018: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/29452878/combining-novel-renal-injury-markers-with-delta-serum-creatinine-early-after-cardiac-surgery-and-risk-stratification-for-serious-adverse-outcomes-an-exploratory-analysis
#3
David R McIlroy, David Farkas, Kun Pan, John W Pickering, H Thomas Lee
OBJECTIVE: To evaluate the prognostic utility of multiple novel urinary biomarkers of renal injury when used alone, in pair-wise combination with an early delta serum creatinine (ΔS Cr ) term, and combined as a broad biomarker panel for the prediction of serious adverse outcomes that may reflect AKI in patients undergoing cardiac surgery. DESIGN: Post-hoc analysis of prospective observational study. SETTING: Academic medical center. PARTICIPANTS: 603 adults undergoing cardiac surgery...
December 30, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29452688/comparison-of-the-efficacy-and-safety-of-orbital-and-rotational-atherectomy-in-calcified-narrowings-in-patients-who-underwent-percutaneous-coronary-intervention
#4
Edward Koifman, Hector M Garcia-Garcia, Kayode O Kuku, Alexandre H Kajita, Kyle D Buchanan, Arie Steinvil, Toby Rogers, Nelson L Bernardo, Robert Lager, Robert A Gallino, Itsik Ben-Dor, Augusto D Pichard, Rebecca Torguson, Jiaxiang Gai, Lowell F Satler, Ron Waksman
We aimed to compare the safety and efficacy of rotational atherectomy (RA) and orbital atherectomy (OA) during percutaneous coronary intervention in an all-comer population with severely calcified lesions. We included all patients who underwent percutaneous coronary intervention with OA or RA in our institution from October 2013 until October 2016. Comparison of baseline and procedural characteristics, along with acute complication rates and postprocedural cardiac enzyme elevation, was performed. There were 191 RA and 57 OA patients...
February 13, 2018: American Journal of Cardiology
https://www.readbyqxmd.com/read/29452370/blood-cardioplegia-for-cardiac-surgery-in-acute-myocardial-infarction-rat-experiments-with-two-widely-used-solutions
#5
Andreas Boening, Lena Assling-Simon, Martina Heep, Kerstin Boengler, Bernd Niemann, Julia Schipke, Christian Mühlfeld, Philippe Grieshaber
OBJECTIVES: Blood cardioplegia (BCP) can be used in different ways to protect the heart from ischaemia-reperfusion injury during cardiac surgery. Because there could be differences between warm and cold intermittent cardioplegia with or without warm reperfusion, we investigated the influence of 2 blood cardioplegia solutions on cardiac function, metabolism and infarct size in stable and infarcted rat hearts. METHODS: The hearts of 32 male Wistar rats were excised and inserted into a blood-perfused isolated heart apparatus...
February 14, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29452150/cerebral-blood-flow-velocity-and-autoregulation-in-paediatric-patients-following-a-global-hypoxic-ischaemic-insult
#6
Marlina E Lovett, Tensing Maa, Melissa G Chung, Nicole F O'Brien
AIM: To describe the cerebral blood flow velocity pattern and investigate cerebral autoregulation using transcranial Doppler ultrasonography (TCD) following a global hypoxic-ischaemic (HI) event in children. METHODS: This was a prospective, observational study in a quaternary-level paediatric intensive care unit. Intubated children, newborn to 17 years admitted to the PICU following HI injury (asphyxia, drowning, cardiac arrest) were eligible for inclusion. TCD was performed daily until post-injury day 8, discharge, or death, whichever occurred earliest...
February 13, 2018: Resuscitation
https://www.readbyqxmd.com/read/29451341/validation-of-acute-kidney-injury-according-to-the-modified-kdigo-criteria-in-infants-after-cardiac-surgery-for-congenital-heart-disease
#7
Kentaro Ueno, Shunji Seki, Naohiro Shiokawa, Tomoyuki Matsuba, Akinori Miyazono, Daisuke Hazeki, Yutaka Imoto, Yoshifumi Kawano
AIM: We aimed to validate the incidence of, risk factors for, and postoperative outcomes of acute kidney injury (AKI) according to the modified Kidney Disease Improving Global Outcomes (m-KDIGO) criteria and compare this criteria with both the pediatric Risk, Injury, Failure, Loss, End-stage disease (pRIFLE) and Acute Kidney Injury Network (AKIN) criteria in infants after cardiac surgery. METHODS: We retrospectively enrolled 145 consecutive infants who underwent open-heart surgery at Kagoshima University Hospital...
February 16, 2018: Nephrology
https://www.readbyqxmd.com/read/29451035/revisiting-the-physiological-effects-of-methylene-blue-as-a-treatment-of-cyanide-intoxication
#8
Philippe Haouzi, Maxime Gueguinou, Takashi Sonobe, Annick Judenherc-Haouzi, Nicole Tubbs, Mohamed Trebak, Joseph Cheung, Frederic Bouillaud
BACKGROUND: Although methylene blue (MB) had long been proposed to counteract the effects of cyanide (CN) intoxication, research on its mechanisms of action and efficacy has been abandoned for decades. Recent studies on the benefits of MB in post-anoxic injuries have prompted us to reexamine the relevance of this historical observation. METHODS: Our study was performed in adult male Sprague-Dawley rats and on HEK293T epithelial cells. First, the effects and toxicity of MB (0-80 mg/kg) on circulation and metabolism were established in four urethane-anesthetized rats...
February 16, 2018: Clinical Toxicology
https://www.readbyqxmd.com/read/29449936/function-of-aquaporins-in-sepsis-a-systematic-review
#9
REVIEW
Katharina Rump, Michael Adamzik
Background: Sepsis is a common cause of death in intensive care units worldwide. Due to the high complexity of this immunological syndrome development of novel therapeutic strategies is urgent. Promising drug targets or biomarkers may depict aquaporins (AQPs) as they regulate crucial key mechanisms of sepsis. Main body: Here we report on base of the current literature that several AQPs are involved in different physiological processes of sepsis. In immune system mainly AQPs 3, 5 and 9 seem to be important, as they regulate the migration of different immune cells...
2018: Cell & Bioscience
https://www.readbyqxmd.com/read/29449354/high-resolution-infrared-thermography-of-esophageal-temperature-during-radiofrequency-ablation-of-atrial-fibrillation
#10
Matthew G Daly, Iain Melton, Graham Roper, Gary Lim, Ian G Crozier
BACKGROUND: Catheter ablation for atrial fibrillation has potential to cause esophageal thermal injury. Esophageal temperature monitoring during ablation is commonly used; however, it has not eliminated thermal injuries, possibly because conventional sensors have poor spatial sampling and response characteristics. To enhance understanding of temperature dynamics that may underlie esophageal injury, we tested a high-resolution, intrabody, infrared thermography catheter to continuously image esophageal temperatures during ablation...
February 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29448942/cold-exposure-induced-oxidative-stress-and-apoptosis-in-the-myocardium-by-inhibiting-the-nrf2-keap1-signaling-pathway
#11
Peifang Cong, Yunen Liu, Nannan Liu, Yubiao Zhang, Changci Tong, Lin Shi, Xuelei Liu, Xiuyun Shi, Ying Liu, Zhou Tong, Mingxiao Hou
BACKGROUND: Exposure to cold weather is associated with infaust cardiovascular responses, including myocardial infarction and arrhythmias. However, the exact mechanisms of these adverse changes in the myocardium under cold stress are unknown. This study was designed to investigate the mechanisms of cardiac injury induced by cold stress in mice. METHODS: The mice were randomly divided into three groups, normal control (no handling), 1-week cold stress and 2-week cold stress...
February 15, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29448828/role-of-terminal-warm-blood-cardioplegia-in-complex-congenital-heart-surgery
#12
Pribadi Wiranda Busro, Harvey Romolo, Sudigdo Sastroasmoro, Jusuf Rachmat, Mohammad Sadikin, Anwar Santoso, Cindy Elfira Boom, Suhendro Suwarto, Ahmad Aulia Jusuf
Introduction Myocardial protection is vital to ensure successful open heart surgery. Cardioplegic solution is one method to achieve good myocardial protection. Inevitably, ischemia-reperfusion injury occurs with aortic crossclamping. Histidine-tryptophan-ketoglutarate solution is a frequently used cardioplegia for complex congenital heart surgery. We postulated that addition of terminal warm blood cardioplegia before removal of the aortic crossclamp might improve myocardial protection. Method A randomized controlled trial was conducted on 109 cyanotic patients aged, 1 to 5 years who underwent complex biventricular repair...
January 1, 2018: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/29447430/aucubin-protects-against-pressure-overload-induced-cardiac-remodelling-via-%C3%AE-3-ar-nnos-cascades
#13
Qing-Qing Wu, Yang- Xiao, Ming-Xia Duan, Yuan Yuan, Xiao-Han Jiang, Zheng Yang, Hai-Han Liao, Wei Deng, Qi-Zhu Tang
BACKGROUND AND PURPOSE: Aucubin, the predominant component of Eucommia ulmoides Oliv., plays an indispensable role in regulating oxidative stress. Considering that oxidative stress has previously been demonstrated to contribute to acute and chronic myocardial injury, we tested the effects of aucubin on cardiac remodelling and heart failure. EXPERIMENTAL APPROACH: In the first set of experiments, H9c2 cardiomyocytes and neonatal rat cardiomyocytes pre-treated with aucubin (1, 3 10, 25, 50 μM) were challenged with phenylephrine...
February 15, 2018: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29447379/acute-exercise-is-not-cardioprotective-and-may-induce-apoptotic-signalling-in-heart-surgery-a-randomized-controlled-trial
#14
Benedikte T Smenes, Fredrik H Bækkerud, Katrine H Slagsvold, Erlend Hassel, Martin Wohlwend, Maria Pinho, Morten Høydal, Ulrik Wisløff, Øivind Rognmo, Alexander Wahba
OBJECTIVES: During open-heart surgery, the myocardium experiences ischaemia-reperfusion injury. A single bout of moderate, 30-min exercise induces preconditioning and protects the heart from ischaemia-reperfusion injury in rats, but this has never been investigated in humans. We aimed to investigate whether 1 bout of moderate exercise 24 h prior to surgery protects against mitochondrial and cardiac damage. METHODS: Patients scheduled for elective coronary artery bypass were eligible for this pilot study...
February 13, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29447328/cardiac-surgery-in-adult-patients-with-remitted-or-active-malignancies-a-review-of-preoperative-screening-surgical-management-and-short-and-long-term-postoperative-results
#15
Roberto Lorusso, Enrico Vizzardi, Daniel M Johnson, Giovanni Mariscalco, Edoardo Sciatti, Jos Maessen, Elham Bidar, Sandro Gelsomino
Candidate patients for cardiac surgery procedures with a history of malignancies and antitumour therapy or with an active cancer and on antineoplastic treatment are increasingly common in daily practice. Oncological therapy can lead to cardiovascular injury and, therefore, has the potential for impacting operative risks and surgical strategies. This means that a number of considerations are essential to take into account prior to cardiac surgery. These include the type of cancer, previous cardiotoxicity or concomitant antitumour therapy, reversibility or irreversibility of such complications, the interaction between cancer disease course and extracorporeal circulation, the need for associated surgery and the impact of cancer on early and long-term outcomes...
February 13, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29446730/salvaging-the-ischemic-heart-gi-coupled-receptors-in-mast-cells-activate-a-pkc%C3%AF-aldh2-pathway-providing-anti-ras-cardioprotection
#16
Alice Marino, Roberto Levi
BACKGROUND: Excessive norepinephrine (NE) release in the ischemic heart elicits severe and often lethal arrhythmias. Resident cardiac mast cells synthesize and store active renin, which is released upon degranulation, causing the activation of a local cardiac renin-angiotensin system (RAS) responsible for NE release and consequent arrhythmias. Toxic aldehydes, known to be formed by lipid peroxidation in ischemia/reperfusion (I/R), have been shown to degranulate mast cells and activate a local RAS...
February 13, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29445833/functionalized-au-ag-au-nanoparticles-as-an-optical-and-sers-dual-probe-for-lateral-flow-sensing
#17
Tingting Bai, Meng Wang, Min Cao, Juan Zhang, Kangzhen Zhang, Ping Zhou, Zhengxia Liu, Ying Liu, Zhirui Guo, Xiang Lu
Lateral flow assay strips (LFASs) with Au nanoparticles (NPs) have been widely used as a probe for biomarkers in point-of-care testing; however, there still remain challenges in detection sensitivity and quantitative analysis. In this study, we developed a surface-enhanced Raman scattering (SERS)-based LFAS for quantitative analysis of a biomarker in the low concentration range. Moreover, apart from conventional Au NPs, three other types of citrate-capped Au-Ag bimetallic NPs: Au core with Ag shell NPs (Au@Ag NPs), rattle-like Au core in Ag-Au shell NPs (Au@Ag-Au NPs) and Ag-Au NPs were prepared and functionalized, and their solution-based SERS activities were comprehensively studied by experimental measurement and theoretical analysis...
February 14, 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29445469/spontaneous-pneumomediastinum-in-a-term-neonate-case-report
#18
Gustavo Rocha, Hercília Guimarães
Pneumomediastinum after birth, without birth injury or resuscitation maneuvers, is an unusual situation that can present with grunting, deafening of cardiac sounds, and bulging of the hemithorax. If clinical condition allows, conservative approach is advised even if the pneumomediastinum does not spontaneously resolve in 1 or 2 days.
February 2018: Clinical Case Reports
https://www.readbyqxmd.com/read/29445066/epidemiology-of-pediatric-out-of-hospital-cardiac-arrest-at-school-an-investigation-of-a-nationwide-registry-in-japan
#19
Kosuke Kiyohara, Junya Sado, Tetsuhisa Kitamura, Mamoru Ayusawa, Masahiko Nitta, Taku Iwami, Ken Nakata, Yasuto Sato, Noriko Kojimahara, Naohito Yamaguchi, Tomotaka Sobue, Yuri Kitamura
BACKGROUND: A better understanding of the epidemiology of pediatric out-of-hospital cardiac arrest (OHCA) occurring in school settings is important to establish an evidence-based strategy for prevention and better prognosis.Methods and Results:The Stop and Prevent cardIac aRrest, Injury, and Trauma in Schools (SPIRITS) is a nationwide prospective observational study linking databases from 2 nationally representative registries, the Injury and the Accident Mutual Aid Benefit System of The Japan Sport Council and the All-Japan Utstein Registry of the Fire and Disaster Management Agency...
February 15, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29445060/clinical-usefulness-of-wearable-cardioverter-defibrillator-wcd-and-current-understanding-of-its-clinical-indication-in-japan
#20
Shinichi Niwano, Yukio Sekiguchi, Yosuke Ishii, Yuki Iwasaki, Ritsushi Kato, Hideo Okamura, Masahiko Takagi, Takashi Kurita, Takashi Nitta
Prevention of sudden cardiac death (SCD) has become an important issue in today's cardiovascular field, together with various developments in secondary prevention of basic cardiac diseases. The importance of the implantable cardioverter defibrillator (ICD) is now widely accepted because it has exhibited significant improvement in patients' prognoses in ischemic and non-ischemic cardiovascular diseases. However, there is an unignorable gap between the ICD indication in the guidelines and real-world high-risk patients for SCD, especially in the acute recovery phase of cardiac injury...
February 14, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
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