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https://www.readbyqxmd.com/read/28938307/design-and-development-of-a-miniaturized-percutaneously-deployable-wireless-left-ventricular-assist-device-early-prototypes-and-feasibility-testing
#1
Brian Letzen, Jiheum Park, Zeynep Tuzun, Pramod Bonde
The current left ventricular assist devices (LVADs) are limited by a highly invasive implantation procedure in a severely unstable group of advanced heart failure patients. Additionally, the current transcutaneous power drive line acts as a nidus for infection resulting in significant morbidity and mortality. In an effort to decrease this invasiveness and eliminate drive line complications, we have conceived a wireless miniaturized percutaneous LVAD, capable of being delivered endovascularly with a tether-free operation...
September 21, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28938291/feasibility-and-safety-of-controlled-active-hypothermia-treatment-during-transport-in-neonates-with-hypoxic-ischemic-encephalopathy
#2
Eniko Szakmar, Kata Kovacs, Unoke Meder, Agnes Nagy, Andras Szell, Bojan Bundzsity, Zsolt Somogyvari, Attila J Szabo, Miklos Szabo, Agnes Jermendy
OBJECTIVES: To evaluate the feasibility and safety of controlled active hypothermia versus standard intensive care during neonatal transport in patients with hypoxic-ischemic encephalopathy. DESIGN: Cohort study with a historic control group. SETTING: All infants were transported by Neonatal Emergency & Transport Services to a Level-III neonatal ICU. PATIENTS: Two hundred fourteen term newborns with moderate-to-severe hypoxic-ischemic encephalopathy...
September 21, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28938249/absence-of-fitness-improvement-is-associated-with-outcomes-in-heart-failure-patients
#3
Esmée A Bakker, Johan A Snoek, Esther P Meindersma, Maria T E Hopman, Louise Bellersen, André L M Verbeek, Dick H J Thijssen, Thijs M H Eijsvogels
PURPOSE: To examine the clinical impact of cardiorespiratory fitness (CRF) and improvements in CRF after cardiac rehabilitation (CR) in heart failure (HF) patients for their risk of all-cause mortality and unplanned hospitalization. Secondly, to investigate possible factors associated with the absence of improvement in CRF after rehabilitation. METHODS: We included 155 HF patients receiving CR between October 2009 and January 2015. Patients performed an incremental bicycle test to assess CRF through peak oxygen uptake (VO2-peak) before and after CR-based supervised exercise training...
September 21, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28938247/challenges-with-percent-predicted-maximum-vo2-in-patients-with-heart-failure
#4
Clinton A Brawner, Jonathan K Ehrman, Ali Shafiq, Matthew A Saval, Stuart D Russell, David E Lanfear, Steven J Keteyian
PURPOSE: To describe the influence of different equations to predict maximum oxygen uptake (MVO2) on the percent predicted MVO2 (ppMVO2) and the resultant categorization of patients with heart failure with reduced ejection fraction (HFrEF) into high or low risk. METHODS: In this retrospective cohort study, ppMVO2 was calculated using six different equations to predict MVO2 among 1,168 patients with HFrEF (33% women). Repeated measures analysis of variance was used to compare within-subject differences in mean ppMVO2 between the prediction equations...
September 21, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28937442/orally-active-epoxyeicosatrienoic-acid-analogs
#5
William B Campbell, John D Imig, James M Schmitz, John R Falck
Biologically active epoxyeicosatrienoic acid (EET) regioisomers are synthesized from arachidonic acid by cytochrome P450 epoxygenases of endothelial, myocardial, and renal tubular cells. EETs relax vascular smooth muscle and decrease inflammatory cell adhesion and cytokine release. Renal EETs promote sodium excretion and vasodilation to decrease hypertension. Cardiac EETs reduce infarct size after ischemia-reperfusion injury and decrease fibrosis and inflammation in heart failure. In diabetes, EETs improve insulin sensitivity, increase glucose tolerance, and reduce the renal injury...
September 19, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28936878/digoxin-is-associated-with-increased-shock-events-and-electrical-storms-in-patients-with-implantable-cardioverter-defibrillators
#6
George S Mina, Madan Acharya, Taylor Shepherd, George Gobrial, Michael Tekeste, Hussam Watti, Ruchi Bhandari, Aditya Saini, Pratap Reddy, Paari Dominic
AIM: Recently, digoxin use has been found to associate with higher mortality. Yet, potential mechanisms by which digoxin use increases mortality remain unclear. Increased arrhythmogenicity from digoxin use is one possibility. Thus, we aimed to evaluate the relation between digoxin and shock events in patients with implantable cardioverter defibrillators (ICDs). METHODS: We performed a retrospective chart review of all patients with ICDs and at least 1 device interrogation at our institution between January 1, 2012, and January 1, 2015...
January 1, 2017: Journal of Cardiovascular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28936741/exosomes-derived-from-embryonic-stem-cells-as-potential-treatment-for-cardiovascular-diseases
#7
Yao-Hua Song, Lianbo Shao, Yu Zhang, Jin Zhou, Bin Liu, Xiangbin Pan, Yong-Jian Geng, Xi-Yong Yu, Yangxin Li
Cardiovascular diseases resulting from ischemic heart diseases remain to be the main causes of heart failure and death despite significant advances in medical treatment. The development of new therapies for heart failure is thus required to improve the outcome in these patients, and this has led to the development of cell-based therapies. Animal studies showed interesting results using various cell types. Some stem cell based therapies have been tested in clinical trials. Although the results were encouraging, challenges remain...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936740/therapeutic-effects-of-mesenchymal-stem-cell-derived-exosomes-in-cardiovascular-disease
#8
Etsu Suzuki, Daishi Fujita, Masao Takahashi, Shigeyoshi Oba, Hiroaki Nishimatsu
Mesenchymal stem cells (MSCs) are multipotent stem cells that reside in various organs. They have the capacity to differentiate into various cell types, including cardiomyocytes, vascular endothelial cells, and vascular smooth muscle cells. Among the various MSCs, bone marrow-derived MSCs (BMMSCs) have been widely used for treating acute myocardial infarction (AMI) and ischemic heart failure (IHF) in preclinical and clinical studies. Although the beneficial effects of BMMSCs in treating AMI and IHF were originally attributed to their capacity to differentiate into cardiac cell types, recent evidence suggests that the differentiation capacity of BMMSCs appears to be minimal and that BMMSCs exert cardioprotective effects by secreting paracrine factors...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936737/peripartum-cardiomyopathy-do-exosomes-play-a-role
#9
Huanyu Gu, Qiying Dai, Zhuyuan Liu, Hongbao Wang, Jianhua Yao, Lei Zhou
Peripartum cardiomyopathy (PPCM) refers to irreversible cardiomyocyte damage that occurs during the last month of pregnancy, or within 5 months after giving birth. It is characterized by systolic heart failure. This life-threatening condition is relatively uncommon, but the incidence has been climbing up. Because of its high mortality, it is crucial for physicians to have high suspicious for the disease. Studies have been done to search into specific lab test and treatment for PPCM. Therapies like anti-viral, anti-inflammatory and immunosuppression regimen have been explored...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936736/pathological-effects-of-exosomes-in-mediating-diabetic-cardiomyopathy
#10
Esam S B Salem, Guo-Chang Fan
Diabetic subjects are at risk of developing cardiovascular disease, which accounts for 60-80% of diabetes-related mortality. Atherosclerosis is still considered as a leading cause of heart failure in diabetic patients, but it could also be an intrinsic and long-term effect of contractile cardiac cells malfunction, known as diabetic cardiomyopathy (DCM). Pathologically, this cardiac dysfunction is manifested by inflammation, apoptosis, fibrosis, hypertrophy and altered cardiomyocytes metabolism. However, the underlying molecular mechanisms of DCM pathophysiology are not clearly understood...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936734/exosomes-as-new-intercellular-mediators-in-development-and-therapeutics-of-cardiomyocyte-hypertrophy
#11
Qi Huang, Benzhi Cai
Myocardial hypertrophy is a common cardiac condition in response to hemodynamic and neurohormonal alterations. Pathological hypertrophic growth in hearts caused the decline of cardiac functions, and finally developed into congestive heart failure. The exosomes are small membrane vesicles which are secreted by various cells and play important roles in cellular communication, migration, proliferation and differentiation. Recent studies uncovered that the exosomes from cardiac fibroblasts and other tissues participates in the development of myocardial hypertrophy...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936733/exosomes-based-biomarkers-for-the-prognosis-of-cardiovascular-diseases
#12
Yihua Bei, Pujiao Yu, Dragos Cretoiu, Sanda Maria Cretoiu, Junjie Xiao
Cardiovascular diseases (CVDs) have a high prevalence and annually increasing incidence with high mortality and morbidity. Identification of biomarkers with high sensitivity and specificity for assessing the prognosis of CVDs is necessary for optimizing personalized treatment and reducing mortality. Exosomes have been proved to be accessible in nearly all body fluids and they can reflect disease stage or progression. Here we summarized exosomes-based biomarkers for the prognosis of coronary artery diseases, heart failure, stroke, hypertension, cardiac arrhythmia, cardiomyopathy, valvular heart diseases and pulmonary arterial hypertension...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28936442/cardiotoxicity-of-cancer-chemotherapy-identification-prevention-and-treatment
#13
REVIEW
Diwakar Jain, Tauseef Ahmad, Mitchel Cairo, Wilbert Aronow
Cardiotoxicity is an important complication of several cancer therapeutic agents. Several well established and newer anticancer therapies such as anthracyclines, trastuzumab and other HER2 receptor blockers, antimetabolites, alkylating agents, tyrosine kinase inhibitors (TKIs), angiogenesis inhibitors, and checkpoint inhibitors are associated with significant cardiotoxicity. Cardiovascular imaging employing radionuclide imaging, echocardiography and magnetic resonance imaging are helpful in early detection and prevention of overt heart failure secondary to cardiotoxicity of cancer therapy...
September 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28936433/trpc3-channels-in-cardiac-fibrosis
#14
REVIEW
Takuro Numaga-Tomita, Sayaka Oda, Tsukasa Shimauchi, Akiyuki Nishimura, Supachoke Mangmool, Motohiro Nishida
Cardiac stiffness, caused by interstitial fibrosis due to deposition of extracellular matrix proteins, is thought as a major clinical outcome of heart failure with preserved ejection fraction (HFpEF). Canonical transient receptor potential (TRPC) subfamily proteins are components of Ca(2+)-permeable non-selective cation channels activated by receptor stimulation and mechanical stress, and have been attracted attention as a key mediator of maladaptive cardiac remodeling. How TRPC-mediated local Ca(2+) influx encodes a specific signal to induce maladaptive cardiac remodeling has been long obscure, but our recent studies suggest a pathophysiological significance of channel activity-independent function of TRPC proteins for amplifying redox signaling in heart...
2017: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28936174/the-effect-of-velvet-antler-proteins-on-cardiac-microvascular-endothelial-cells-challenged-with-ischemia-hypoxia
#15
Xiang Xiao, Shuqiang Xu, Lin Li, Min Mao, Jinping Wang, Yanjun Li, Ziwei Wang, Fei Ye, Li Huang
Velvet antler (VA) is a precious traditional Chinese medicine that is capable of repeated regeneration. Based on the Chinese medicine theory of coordination the heart and kidneys, VA has been employed to treat heart diseases, including ischemic heart disease, heart failure, and arrhythmia. We examined the effects of VA proteins on primary cardiac microvascular endothelial cells (CMECs) that were subjected to ischemia-hypoxia (IH) to investigate their effects on and mechanism of action in the treatment of ischemic heart disease...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28935830/the-impact-of-artifact-correction-methods-of-rr-series-on-heart-rate-variability-parameters
#16
Anderson Ivan Rincon Soler, Luiz Eduardo Virgilio Silva, Rubens Fazan, Luiz Otavio Murta Junior
Heart rate variability (HRV) analysis is widely used to investigate the autonomic regulation of the cardiovascular system. HRV is often analyzed using RR time series, which can be affected by different types of artifacts. Although there are several artifact correction methods, there is no study that compares their performances in actual experimental contexts. This work aimed to evaluate the impact of different artifact correction methods on several HRV parameters. Initially, 36 ECG recordings of control rats or rats with heart failure or hypertension were analyzed to characterize artifacts occurrence rates and distributions, in order to be mimicked in simulations...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28935576/myofilament-remodeling-and-function-is-more-impaired-in-peripartum-cardiomyopathy-compared-to-dilated-cardiomyopathy-and-ischemic-heart-disease
#17
Ilse Anne Elise Bollen, Elisabeth Ehler, Karin Fleischanderl, Floor Bouwman, Lanette Kempers, Melanie Ricke-Hoch, Denise Hilfiker-Kleiner, Cristobal Guillermo Dos Remedios, Martina Krüger, Aryan Vink, Folkert Wouter Asselbergs, Karin Yvon van Spaendonck-Zwarts, Yigal Martin Pinto, Diederik Wouter Dimitri Kuster, Jolanda van der Velden
Peripartum cardiomyopathy (PPCM) and dilated cardiomyopathy (DCM) show similarities in clinical presentation. However, while DCM patients do not recover and slowly deteriorate further, PPCM patients show either a fast cardiac deterioration or complete recovery. The aim of this study was to assess if underlying cellular changes can explain the clinical similarities and differences in the two diseases. We therefore assessed sarcomeric protein expression, modification, titin isoform shift, and contractile behavior of cardiomyocytes in heart tissue of PPCM and DCM patients and compared these to non-failing controls...
September 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28935571/aggravated-post-infarct-heart-failure-in-type-2-diabetes-is-associated-with-impaired-mitophagy-and-exaggerated-inflammasome-activation
#18
Thota Durga Devi, Mohan Babu, Petri Mäkinen, Minna Kaikkonen, Merja Heinaniemi, Hanne Laakso, Elias Ylä-Herttuala, Lassi Rieppo, Timo Liimatainen, Nikolay Naumenko, Pasi Tavi, Seppo Ylä-Herttuala
Type 2 diabetes mellitus (T2DM) is a major risk factor for heart disease. Mortality rates following myocardial infarction (MI) are significantly increased in T2DM patients due to dysfunctional left ventricle (LV). However, molecular pathways underlying accelerated post-MI heart failure (HF) in T2DM remain unclear. We investigated the underlying mechanisms by inducing MI in a well-established model of T2DM and control mice. Cardiac imaging revealed a significantly decreased global LV ejection fraction (EF) in parallel with increased mortality post-MI in T2DM mice compared to controls...
September 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28935393/the-effectiveness-of-psychological-interventions-on-self-care-psychological-and-health-outcomes-in-patients-with-chronic-heart-failure-a-systematic-review-and-meta-analysis
#19
REVIEW
Ying Jiang, Shefaly Shorey, Betsy Seah, Wanxian Chan, Wilson Wai San Tam, Wenru Wang
OBJECTIVE: To review the evidence to determine the effects of psychological interventions on self-care and psychological and health outcomes in patients with chronic heart failure (CHF). METHODS: We evaluated the effectiveness of randomized controlled trials using psychological methods or theory on self-care behaviors, anxiety and depression levels, HRQoL, and physical function. Studies published in English, from January 2006 to December 2016, were considered. We searched published and unpublished studies in the following electronic databases: CINAHL, Cochrane Library, EMBASE, PubMed, PsycINFO, Scopus, Web of Science, and ProQuest Dissertations and Theses...
August 19, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/28935351/impact-of-left-ventricular-assist-device-related-complications-on-posttransplant-graft-survival
#20
Dhaval Chauhan, Alexis K Okoh, Setri Fugar, Rivandra Karanam, David Baran, Mark Zucker, Magarita Camacho, Mark J Russo
BACKGROUND: This study describes the impact of continuous-flow left-ventricular-assist device (CF-LVAD)-related complications on postoperative outcomes. METHODS: The United Network for Organ Sharing (UNOS) heart transplant follow-up data from 2005 to 2015 were obtained. CF-LVAD patients who were bridged to transplant were studied. Device-related complications (DRCs) at patient's last follow-up before transplantation were reported in 5 categories: device thrombosis (B1), infection (B2), device malfunction (B3), life-threatening arrhythmias (B4), and others (B5)...
September 18, 2017: Annals of Thoracic Surgery
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