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https://www.readbyqxmd.com/read/29166591/a-cd103-conventional-dendritic-cell-surveillance-system-prevents-development-of-overt-heart-failure-during-subclinical-viral-myocarditis
#1
Xavier Clemente-Casares, Siyavash Hosseinzadeh, Iulia Barbu, Sarah A Dick, Jillian A Macklin, Yiming Wang, Abdul Momen, Crystal Kantores, Laura Aronoff, Maylis Farno, Tiffany M Lucas, Joan Avery, Dorrin Zarrin-Khat, Heidi J Elsaesser, Babak Razani, Kory J Lavine, Mansoor Husain, David G Brooks, Clinton S Robbins, Myron Cybulsky, Slava Epelman
Innate and adaptive immune cells modulate heart failure pathogenesis during viral myocarditis, yet their identities and functions remain poorly defined. We utilized a combination of genetic fate mapping, parabiotic, transcriptional, and functional analyses and demonstrated that the heart contained two major conventional dendritic cell (cDC) subsets, CD103(+) and CD11b(+), which differentially relied on local proliferation and precursor recruitment to maintain their tissue residency. Following viral infection of the myocardium, cDCs accumulated in the heart coincident with monocyte infiltration and loss of resident reparative embryonic-derived cardiac macrophages...
November 21, 2017: Immunity
https://www.readbyqxmd.com/read/29165728/cardioprotective-effect-of-hydroxysafflor-yellow-a-via-the-cardiac-permeability-transition-pore
#2
Gavin A Huber, Sydney M Priest, Timothy P Geisbuhler
Myocardial ischemia damages cardiac myocytes in part via opening of the mitochondrial permeability transition pore. Preventing this pore's opening is therefore a useful therapeutic goal in treating cardiovascular disease. Hydroxysafflor yellow A has been proposed as a nontoxic alternative to other agents that modulate mitochondrial permeability transition pore opening. In this study, we proposed that hydroxysafflor yellow A prevents mitochondrial permeability transition pore formation in anoxic cardiac myocytes, and thus protects the cell from damage seen during reoxygenation of the cardiac myocytes...
November 17, 2017: Planta Medica
https://www.readbyqxmd.com/read/29165173/health-and-well-being-benefits-of-spending-time-in-forests-systematic-review
#3
Byeongsang Oh, Kyung Ju Lee, Chris Zaslawski, Albert Yeung, David Rosenthal, Linda Larkey, Michael Back
BACKGROUND: Numerous studies have reported that spending time in nature is associated with the improvement of various health outcomes and well-being. This review evaluated the physical and psychological benefits of a specific type of exposure to nature, forest therapy. METHOD: A literature search was carried out using MEDLINE, PubMed, ScienceDirect, EMBASE, and ProQuest databases and manual searches from inception up to December 2016. Key words: "Forest" or "Shinrin -Yoku" or "Forest bath" AND "Health" or "Wellbeing"...
October 18, 2017: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29163663/an-unusual-and-rare-form-of-truncus-arteriosus-in-an-asymptomatic-woman
#4
Maryam Nabati
Persistent truncus arteriosus is a rare congenital cardiac malformation. It is characterized by a single great artery arising from the heart which supplies the aorta, the origin of coronary arteries and pulmonary arteries. Without surgery, prognosis is poor and 90% of these patients die before one year of age. We report a rare case of an asymptomatic 35-year-old woman with uncorrected persistent truncus arteriosus and hypoplastic right and left pulmonary arteries. Hypoplastic branch pulmonary arteries prevented the development of severe pulmonary arterial hypertension...
November 2017: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/29163163/guanxin-danshen-formulation-protects-against-myocardial-ischemia-reperfusion-injury-induced-left-ventricular-remodeling-by-upregulating-estrogen-receptor-%C3%AE
#5
Xuehong Deng, Xiaoyan Xing, Guibo Sun, Xudong Xu, Haifeng Wu, Guang Li, Xiaobo Sun
Background: Guanxin Danshen formulation (GXDSF) is a traditional Chinese herbal recipe recorded in the Chinese Pharmacopeia since 1995 edition, which consists of Salviae miltiorrhizae Radix et Rhizoma, Notoginseng Radix et Rhizoma and Dalbergiae odoriferae Lignum. Our previous research suggested GXDSF had positive effect on cardiovascular disease. Therefore, the aim of this study was to elucidate the effects of GXDSF on myocardial ischemia reperfusion injury-induced left ventricular remodelling (MIRI-LVR). Methods: The effects of GXDSF on cardiac function were detected by haemodynamics and echocardiograms...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29162722/docosahexaenoic-acid-lowers-cardiac-mitochondrial-enzyme-activity-by-replacing-linoleic-acid-in-the-phospholipidome
#6
E Madison Sullivan, Edward Ross Pennington, Genevieve C Sparagna, Maria J Torres, P Darrell Neufer, Mitchel Harris, James Washington, Ethan J Anderson, Tonya N Zeczycki, David A Brown, Saame Raza Shaikh
Cardiac mitochondrial phospholipid acyl chains regulate respiratory enzymatic activity. In several diseases, the rodent cardiac phospholipidome is extensively rearranged; however, whether specific acyl chains impair respiratory enzyme function is unknown. One unique remodeling event in the myocardium of obese and diabetic rodents is an increase in docosahexaenoic acid (DHA) levels. Here, we first confirmed that cardiac DHA levels are elevated in diabetic humans relative to controls. We then used dietary supplementation of a Western diet with DHA as a tool to promote cardiac acyl chain remodeling and to study its influence on respiratory enzyme function...
November 21, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29162602/rosuvastatin-reduces-aortic-sinus-and-coronary-artery-atherosclerosis-in-sr-b1-scavenger-receptor-class-b-type-1-apoe-apolipoprotein-e-double-knockout-mice-independently-of-plasma-cholesterol-lowering
#7
Pei Yu, Ting Xiong, Christine B Tenedero, Paul Lebeau, Ran Ni, Melissa E MacDonald, Peter L Gross, Richard C Austin, Bernardo L Trigatti
OBJECTIVE: Rosuvastatin has been widely used in the primary and secondary prevention of coronary heart disease. However, its antiatherosclerotic properties have not been tested in a mouse model that could mimic human coronary heart disease. The present study was designed to test the effects of rosuvastatin on coronary artery atherosclerosis and myocardial fibrosis in SR-B1 (scavenger receptor class B type 1) and apoE (apolipoprotein E) double knockout mice. APPROACH AND RESULTS: Three-week-old SR-B1(-/)(-)/apoE(-/)(-) mice were injected daily with 10 mg/kg of rosuvastatin for 2 weeks...
November 21, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29162494/prevalence-of-multidrug-resistant-organisms-in-migrant-children-admitted-to-an-italian-cardiac-surgery-department-2015-2016
#8
E Costa, M Tejada, P Gaia, M Cornetta, A Moroni, E Carfora, R Valaperta, C De Siena, N Moussaidi, G Isgrò, A Frigiola
Screening on hospital admission to identify multidrug-resistant organism (MDRO) colonization is a frequently discussed topic. We report the results of microbiological screening in 141 Italian and 354 migrant children candidates for cardiac surgery conducted in 2015-2016. In all, 25% of Italian children and more than 65.4% of African and Romanian children carried at least one MDRO (meticillin-resistant Staphylococcus aureus; extended-spectrum β-lactamase enzymes; carbapenemase producers; and vancomycin-resistant enterococci)...
November 18, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29162289/apelin-apj-system-is-responsible-for-stress-induced-increase-in-atrial-natriuretic-peptide-expression-in-rat-heart
#9
Vecihe Nimet Izgut-Uysal, Nuray Acar, Ilknur Birsen, Filiz Ozcan, Ozlem Ozbey, Hakan Soylu, Sema Avci, Filiz Tepekoy, Gokhan Akkoyunlu, Gultekin Yucel, Ismail Ustunel
BACKGROUND: The cardiovascular system is a primary target of stress and stress is the most important etiologic factor in cardiovascular diseases. Stressors increase expressions of atrial natriuretic peptide (ANP) and apelin in cardiac tissue. AIM: The aim of the present study was to investigate whether stress-induced apelin has an effect on the expression of ANP in the right atrium of rat heart. METHODS: The rats were divided into the control, stress and F13A+stress groups...
October 31, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/29162282/interruption-of-cardiac-resynchronization-therapy-by-atrial-premature-complexes
#10
S Serge Barold, Andreas Kucher
Biotronik devices used for cardiac resynchronization therapy (CRT) combined with defibrillation function (CRT-D) are capable of left ventricular (LV) sensing. Under certain circumstances, LV sensing may cause loss of CRT. The third generation of the Biotronik i-family CRT-Ds enables the recording of event-triggered tracings of the electrogram particularly those involving "CRT pacing interrupt" episodes. We report three cases of a sudden "CRT pacing interrupt" initiated by an atrial premature complex. This was caused by realignment of the LV timing cycles induced by the APCs whereupon LV pacing was inhibited and a self-perpetuating desynchronization process was initiated...
October 21, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/29162028/endovascular-renal-artery-stent-retriever-embolectomy-in-a-young-patient-with-cardiac-myxoma-case-report-and-review-of-the-literature
#11
Michael A Silva, Alfred P See, Samir K Shah, Priyank Khandelwal, Nirav J Patel, Heather Lyu, Matthew T Menard, Mohammad Ali Aziz-Sultan
PURPOSE: Cardiac myxomas are common tumors of the heart with disproportionate impact on young patients, occasionally with dramatic systemic dissemination of tumor emboli with catastrophic multiorgan system ischemia. The coincident comorbidities can increase the risk of traditional treatments for tumor embolus in each region. CASE REPORT: A young patient with previously unknown cardiac myxoma presented with seizure and was found to have stress cardiomyopathy, multiple cerebral large vessel occlusions with acute ischemic stroke, bilateral lower extremity tumor emboli and rhabdomyolysis, and renal tumor embolus with acute tubular necrosis...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29161424/clinical-impact-of-implantable-cardioverter-defibrillator-in-primary-prevention-of-total-mortality-in-non-ischaemic-cardiomyopathy-results-from-a-meta-analysis-of-prospective-randomized-clinical-trials
#12
Jorge Romero, Juan Carlos Díaz, Michael Grushko, Renato Quispe, David Briceno, Ricardo Avendano, Anjani Golive, Ileana Pina, Andrea Natale, Mario J Garcia, Ulrich P Jorde, Luigi Di Biase
Aim: Primary prophylactic implantable cardioverter defibrillators (ICDs) have demonstrated a clear all-cause mortality benefit in patients with ischaemic cardiomyopathy, with less compelling evidence supporting its use in patients with non-ischaemic cardiomyopathy (NICM). We performed a meta-analysis of randomized controlled trials (RCTs) evaluating the role of ICD for reduction in total mortality in NICM patients. Methods and results: An electronic search on PubMed, the Cochrane Library, and EMBASE databases was performed to identify the RCTs evaluating the role of prophylactic ICD placement in NICM patients...
November 17, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29161419/incidence-of-postoperative-atrial-fibrillation-recurrence-in-patients-discharged-in-sinus-rhythm-after-cardiac-surgery-a-systematic-review-and-meta-analysis
#13
Nicole Lowres, Georgina Mulcahy, Kai Jin, Robyn Gallagher, Lis Neubeck, Ben Freedman
Postoperative atrial fibrillation (POAF) is associated with increased stroke risk and mortality post-discharge. POAF is often considered transient; however, recurrence is likely under-recognized as symptoms are an unreliable guide. Surveillance post-discharge may identify asymptomatic POAF recurrences in patients discharged in sinus rhythm. Therefore, we performed a systematic review and meta-analysis of studies investigating POAF recurrence post-discharge, in patients with new-onset POAF following cardiac surgery who reverted to sinus rhythm prior to discharge...
November 17, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29161389/innovations-in-management-of-cardiac-disease-drugs-treatment-strategies-and-technology
#14
P Foëx
Within the last generation, the management of patients with heart disease has been transformed by advances in drug treatments, interventions and diagnostic technologies. The management of arterial hypertension saw beta-blockers demoted from first- to third-line treatment. Recent studies suggest that the goal of treatment may have to change to lower systolic blood pressures to prevent long-term organ damage. Today less than 15% of coronary revascularizations are surgical and more than 85% are done by interventional cardiologists inserting coronary stents...
December 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29161313/biomarkers-and-echocardiography-for-evaluating-the-improvement-of-the-ventricular-diastolic-function-after-surgical-relief-of-hydronephrosis
#15
Huei-Ming Yeh, Ting-Tse Lin, Chih-Fan Yeh, Ho-Shiang Huang, Sheng-Nan Chang, Jou-Wei Lin, Chia-Ti Tsai, Ling-Ping Lai, Yi-You Huang, Chun-Lin Chu
The pathophysiology of cardio-renal syndrome (CRS) is complex. Hydronephrosis caused by urolithiasis may cause cytokine release and lead to cardiac dysfunction. The aim of this study was to evaluate cardiac function changes observed in patients who received double J placement using feasible biomarkers and echocardiography. This was a prospective, single-center study. Eighty-seven patients who presented with acute unilateral hydronephrosis and received ureteroscope stone manipulation were enrolled. Echocardiography and cytokines were measured on the day of the operation and 24 hours after the procedure...
2017: PloS One
https://www.readbyqxmd.com/read/29160390/left-atrial-appendage-closure-with-amplatzer-cardiac-plug-in-nonvalvular-atrial-fibrillation-safety-and-long-term-outcome
#16
Marcio José Montenegro da Costa, Esmeralci Ferreira, Edgard Freitas Quintella, Bernardo Amorim, Alexandre Fuchs, Ricardo Zajdenverg, Hugo Sabino, Denilson Campos de Albuquerque
BACKGROUND: Atrial fibrillation (AF) is a cardiac arrhythmia with high risk for thromboembolic events, specially stroke. OBJECTIVE: To assess the safety of left atrial appendage closure (LAAC) with the Amplatzer Cardiac Plug for the prevention of thromboembolic events in patients with nonvalvular AF. METHODS: This study included 15 patients with nonvalvular AF referred for LAAC, 6 older than 75 years (mean age, 69.4 ± 9.3 years; 60% of the male sex)...
November 13, 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/29159490/-prewarming-according-to-the-awmf-s3-guidelines-on-preventing-inadvertant-perioperative-hypothermia-2014-retrospective-analysis-of-7786-patients
#17
R Grote, A J Wetz, A Bräuer, M Menzel
BACKGROUND: Inadvertent perioperative hypothermia, which is defined as a core body temperature of less than 36.0 °C, can have serious consequences in surgery patients. These include cardiac complications, increased blood loss, wound infections and postoperative shivering; therefore, the scientific evidence that inadvertent perioperative hypothermia should be avoided is undisputed and several national guidelines have been published summarizing the scientific evidence and recommending specific procedures...
November 20, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/29158499/cardiac-myocyte-mir-29-promotes-pathological-remodeling-of-the-heart-by-activating-wnt-signaling
#18
Yassine Sassi, Petros Avramopoulos, Deepak Ramanujam, Laurenz Grüter, Stanislas Werfel, Simon Giosele, Andreas-David Brunner, Dena Esfandyari, Aikaterini S Papadopoulou, Bart De Strooper, Norbert Hübner, Regalla Kumarswamy, Thomas Thum, Xiaoke Yin, Manuel Mayr, Bernhard Laggerbauer, Stefan Engelhardt
Chronic cardiac stress induces pathologic hypertrophy and fibrosis of the myocardium. The microRNA-29 (miR-29) family has been found to prevent excess collagen expression in various organs, particularly through its function in fibroblasts. Here, we show that miR-29 promotes pathologic hypertrophy of cardiac myocytes and overall cardiac dysfunction. In a mouse model of cardiac pressure overload, global genetic deletion of miR-29 or antimiR-29 infusion prevents cardiac hypertrophy and fibrosis and improves cardiac function...
November 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/29158167/clc-3-chloride-channel-is-involved-in-isoprenaline-induced-cardiac-hypertrophy
#19
Chunmei Li, Dan Huang, Jing Tang, Mengqing Chen, Qun Lu, He Li, Mengzhen Zhang, Bin Xu, Jianwen Mao
Isoprenaline, an activator of β-adrenergic receptor, has been found to induce cardiac hypertrophy in vivo and in vitro, but the exact mechanism is still unclear. ClC-3 is a member of the chloride channel family and is highly expressed in mammalian myocardium. In the present study, the role of ClC-3 in isopronaline-induced cardiac hypertrophy was investigated. We found that ClC-3 expression was reduced in isoprenaline-induced hypertrophic H9c2 cells, primary rat neonatal cardiomyocytes and myocardium of C57/BL/6 mice, and this reduction was prevented by the pretreatment of propranolol...
November 17, 2017: Gene
https://www.readbyqxmd.com/read/29157449/paroxysmal-atrial-fibrillation-prediction-based-on-hrv-analysis-and-non-dominated-sorting-genetic-algorithm-iii
#20
K H Boon, M Khalil-Hani, M B Malarvili
This paper presents a method that able to predict the paroxysmal atrial fibrillation (PAF). The method uses shorter heart rate variability (HRV) signals when compared to existing methods, and achieves good prediction accuracy. PAF is a common cardiac arrhythmia that increases the health risk of a patient, and the development of an accurate predictor of the onset of PAF is clinical important because it increases the possibility to electrically stabilize and prevent the onset of atrial arrhythmias with different pacing techniques...
January 2018: Computer Methods and Programs in Biomedicine
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