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Journal of Cardiovascular Translational Research

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https://www.readbyqxmd.com/read/30105605/development-of-a-novel-human-cell-derived-tissue-engineered-heart-valve-for-transcatheter-aortic-valve-replacement-an-in-vitro-and-in-vivo-feasibility-study
#1
V Lintas, E S Fioretta, S E Motta, P E Dijkman, M Pensalfini, E Mazza, E Caliskan, H Rodriguez, M Lipiski, M Sauer, N Cesarovic, S P Hoerstrup, M Y Emmert
Transcatheter aortic valve replacement (TAVR) is being extended to younger patients. However, TAVR-compatible bioprostheses are based on xenogeneic materials with limited durability. Off-the-shelf tissue-engineered heart valves (TEHVs) with remodeling capacity may overcome the shortcomings of current TAVR devices. Here, we develop for the first time a TEHV for TAVR, based on human cell-derived extracellular matrix and integrated into a state-of-the-art stent for TAVR. The TEHVs, characterized by a dense acellular collagenous matrix, demonstrated in vitro functionality under aortic pressure conditions (n = 4)...
August 13, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/30084076/mechanical-unloading-by-fulminant-myocarditis-lv-impella-ecmella-bi-pella-and-propella-concepts
#2
Carsten Tschöpe, Sophie Van Linthout, Oliver Klein, Thomas Mairinger, Florian Krackhardt, Evgenij V Potapov, Gunther Schmidt, Daniel Burkhoff, Burkert Pieske, Frank Spillmann
Mechanical circulatory support (MCS) is often required to stabilize patients with acute fulminant myocarditis with cardiogenic shock. This review gives an overview of the successful use of left-sided Impella in the setting of fulminant myocarditis and cardiogenic shock as the sole means of MCS as well as in combination with right ventricular (RV) support devices including extracorporeal life support (ECLS) (ECMELLA) or an Impella RP (BI-PELLA). It further provides evidence from endomyocardial biopsies that in addition to giving adequate support, LV unloading by Impella exhibits disease-modifying effects important for myocardial recovery (i...
August 6, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/30073540/mirabegron-a-clinically-approved-%C3%AE-3-adrenergic-receptor-agonist-does-not-reduce-infarct-size-in-a-swine-model-of-reperfused-myocardial-infarction
#3
Xavier Rossello, Antonio Piñero, Rodrigo Fernández-Jiménez, Javier Sánchez-González, Gonzalo Pizarro, Carlos Galán-Arriola, Manuel Lobo-Gonzalez, Jean Paul Vilchez, Jaime García-Prieto, Jose Manuel García-Ruiz, Ana García-Álvarez, David Sanz-Rosa, Borja Ibanez
The administration of the selective β3 adrenergic receptor (β3AR) agonist BRL-37344 protects from myocardial ischemia/reperfusion injury (IRI), although the lack of clinical approval limits its translatability. We tested the cardioprotective effect of mirabegron, the first-in-class β3AR agonist approved for human use. A dose-response study was conducted in 6 pigs to select the highest intravenous dose of mirabegron without significant detrimental hemodynamic effect. Subsequently, closed chest anterior myocardial infarction (45 min ischemia followed by reperfusion) was performed in 26 pigs which randomly received either mirabegron (10 μg/kg) or placebo 5 min before reperfusion...
August 2, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/30039437/study-of-serum-cd147-level-in-patients-with-transient-ischemic-attack-and-cd147-expression-in-atherosclerotic-plaque
#4
Bin Xu, Chan Wu, Wenqing Wu, Yanguo Tan, Nannan Sun, Jian Cui, Siyu Lu, Jing Wang, Shan Cen
There is growing evidence that highlighted the potential effects of CD147 in atherosclerosis, but the potential implication of CD147 in diagnosis and treatment of transient ischemic attack (TIA) and acute cerebral infarction (ACI) is still unclear. In this work, we investigated the serum level of CD147 in patients with TIA and ACI, and CD147 expression in atherosclerotic plaque. The result showed significantly increasing serum level of CD147 in patients with TIA and ACI, and increasing amount of CD147 in vulnerable plaque compared with that in migrating plaque...
July 23, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/30027499/study-design-of-the-graft-patency-after-ffr-guided-versus-angiography-guided-cabg-trial-graffiti
#5
Gabor G Toth, Bernard De Bruyne, Petr Kala, Flavio L Ribichini, Filip Casselman, Ruben Ramos, Zsolt Piroth, Stephane Fournier, Carlos Van Mieghem, Martin Penicka, Martin Mates, Frank Van Praet, Ivan Degriek, Emanuele Barbato
Clinical benefit of invasive functionally guided revascularization has been mostly investigated and proven for percutaneous coronary intervention. It has never been prospectively evaluated whether a systematic fractional flow reserve (FFR) assessment is also beneficial in guiding coronary artery bypass graft surgery (CABG). The objective of the GRAft patency after FFR-guided versus angiography-guIded CABG (GRAFFITI) trial was to compare an FFR-guided revascularization strategy to the traditional angiography-guided revascularization strategy for patients undergoing CABG...
July 19, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29998358/left-ventricular-diastolic-myocardial-stiffness-and-end-diastolic-myofibre-stress-in-human-heart-failure-using-personalised-biomechanical-analysis
#6
Zhinuo J Wang, Vicky Y Wang, Chris P Bradley, Martyn P Nash, Alistair A Young, J Jane Cao
Understanding the aetiology of heart failure with preserved (HFpEF) and reduced (HFrEF) ejection fraction requires knowledge of biomechanical factors such as diastolic myocardial stiffness and stress. Cine CMR images and intra-ventricular pressure recordings were acquired in 8 HFrEF, 11 HFpEF and 5 control subjects. Diastolic myocardial stiffness was estimated using biomechanical models and found to be greater in HFrEF (6.4 ± 1.2 kPa) than HFpEF (2.7 ± 0.6 kPa, p < 0.05) and also greater than control (1...
July 11, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29943320/melatonin-and-st-segment-elevation-acute-myocardial-infarction-the-forgotten-cardioprotective-therapy-strikes-again
#7
LETTER
Alberto Dominguez-Rodriguez, Nestor Baez-Ferrer, Pedro Abreu-Gonzalez
No abstract text is available yet for this article.
June 25, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29916103/circulating-micrornas-a-potential-biomarker-for-cardiac-damage-inflammatory-response-and-left-ventricular-function-recovery-in-pediatric-viral-myocarditis
#8
Lior Goldberg, Tal Tirosh-Wagner, Amir Vardi, Haya Abbas, Nir Pillar, Noam Shomron, Yael Nevo-Caspi, Gideon Paret
Viral myocarditis (VM) can be a life-threatening event resulting in cardiac failure, chronic cardiomyopathy, and death. VM typically includes three phases, i.e., acute, subacute, and resolution/chronic. We prospectively investigated cardiac- and inflammatory-associated plasma-circulating miRNA levels in eight pediatric patients with VM during the three stages of the disease. The level of cardiac-associated miR-208a was significantly elevated during the acute phase compared with the subacute and resolution/chronic phases...
June 18, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29845440/speckle-tracking-echocardiographic-strain-analysis-reliably-estimates-degree-of-acute-lv-unloading-during-mechanical-lv-support-by-impella
#9
Nadjib Hammoudi, Shin Watanabe, Olympia Bikou, Alexandre Ceccaldi, Kenneth Fish, Kelly P Yamada, Satoshi Miyashita, Guillaume Lebreton, Roger J Hajjar, Kiyotake Ishikawa
Non-invasive means of evaluating appropriate cardiac unloading remain to be established. We hypothesized that myocardial deformation assessed by echocardiographic speckle-tracking strain analysis can reliably estimate the degree of left ventricular (LV) unloading under mechanical circulatory support. A total of 24 Yorkshire pigs underwent Impella-mediated acute LV unloading 1-2 weeks after myocardial infarction (MI). Echocardiographic and invasive pressure-volume measurements were used to evaluate the degree of LV unloading...
May 29, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29845439/the-application-of-induced-pluripotent-stem-cells-in-cardiac-disease-modeling-and-drug-testing
#10
REVIEW
Lingqun Ye, Xuan Ni, Zhen-Ao Zhao, Wei Lei, Shijun Hu
In recent decades, cardiovascular diseases have become the greatest health threat to human beings, and thus it is particularly important to explore the subtle underlying pathogenesis of cardiovascular diseases. Although many molecular pathways have been explored to be essential in the development of cardiovascular diseases, their clinical significances are still uncertain. With the emergence of induced pluripotent stem cells (iPSCs), a unique platform for cardiovascular diseases has been established to model cardiovascular diseases on specific genetic background in vitro...
May 29, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29802541/the-exosome-derived-biomarker-in-atherosclerosis-and-its-clinical-application
#11
REVIEW
Mengmeng Lu, Shuaifang Yuan, Shicheng Li, Ling Li, Min Liu, Shaogui Wan
Exosomes are now accepted as potential biomarkers in cardiovascular disease development, especially in atherosclerosis. Atherosclerosis is a leading cause of cardiovascular disease-related death and morbidity, accounting for one-fifth of all deaths globally. Therefore, the biomarkers for the management of atherosclerosis is urgently needed. Exosomes are reported to play key roles cell-to-cell communication in atherosclerosis with lipid bilayer membranous vesicles containing nucleic acids, proteins, and lipid contents, which are released from all most of multiple kinds of living cells...
May 25, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29797232/current-modalities-and-mechanisms-underlying-cardioprotection-by-ischemic-conditioning
#12
REVIEW
John H Rosenberg, John H Werner, Michael J Moulton, Devendra K Agrawal
Ischemic preconditioning is a process which serves to mitigate reperfusion injury. Preconditioning of the heart can be achieved through natural, pharmacological, and mechanical means. Mechanical preconditioning appears to have the greatest chance of good outcomes while methods employing pharmacologic preconditioning have been largely unsuccessful. Remote ischemic preconditioning achieves a cardioprotective effect by applying cycles of ischemia and reperfusion in a distal limb, stimulating the release of a neurohumoral cardioprotective factor incited by stimulation of afferent neurons...
May 24, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29721767/effect-of-sodium-thiosulfate-postconditioning-on-ischemia-reperfusion-injury-induced-mitochondrial-dysfunction-in-rat-heart
#13
Sriram Ravindran, Gino A Kurian
The recent research on the therapeutic applications of sodium thiosulfate (STS) has gained importance in the treatment of cardiovascular diseases. Progressively through the present work, we have demonstrated that postconditioning of isolated rat heart subjected to ischemia-reperfusion injury using STS had preserved the mitochondrial structure, function, and number. Heart comprising of two mitochondrial subpopulations interfibrillar (IFM-involved in contractile function) and subsarcolemmal (SSM-involved in metabolic function), STS postconditioning imparted a state of hypometabolism to SSM, thereby reducing the metabolic demand of the reperfused heart...
June 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29696533/tirofiban-positively-regulates-%C3%AE-1-integrin-and-favours-endothelial-cell-growth-on-polylactic-acid-biopolymer-vascular-scaffold-bvs
#14
Arturo Giordano, Simona Romano, Nicola Corcione, Giacomo Frati, Giuseppe Biondi Zoccai, Paolo Ferraro, Stefano Messina, Stefano Ottolini, Maria Fiammetta Romano
An unexpectedly high incidence of thrombosis in patients that received the polylactic acid bioresorbable vascular scaffold (BVS) suggests a delayed/incomplete endothelial repair with this stent. The anti-platelet agent tirofiban stimulates endothelial cell migration and proliferation, mediated by VEGF production. We investigated the tirofiban effect on the migration and adhesion of endothelial cells to BVS, in vitro. We performed human umbilical endothelial cell (HUVEC) cultures in the presence of BVS. Tirofiban, similarly to VEGF, increased the ability of HUVEC to grow on the vascular scaffold, compared to unstimulated or abciximab-treated cells...
June 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29582395/inhibition-of-aortic-valve-calcification-by-local-delivery-of-zoledronic-acid-an-experimental-study
#15
Andreas Synetos, Konstantinos Toutouzas, Maria Drakopoulou, Iosif Koutagiar, George Benetos, Rafail Kotronias, Nikolaos Anousakis-Vlachochristou, George Latsios, Antonis Karanasos, George Agrogiannis, Marinos Metaxas, Konstantinos Stathogiannis, Aggelos Papanikolaou, Alexandros Georgakopoulos, Nikoleta Pianou, Eleftherios Tsiamis, Efstratios Patsouris, Apostolos Papalois, Dennis Cokkinos, Constantinos Anagnostopoulos, Dimitrios Tousoulis
The aim of this study was to evaluate in an experimental model of aortic valve (AV) stenosis the effectiveness of zoledronate on the inhibition of calcification. Sixteen New Zealand rabbits were placed on vitamin D-enriched diet for 3 weeks. All animals underwent PET/CT at baseline and before euthanasia to assess calcification. Thereafter, the AVs of eight animals were treated with local delivery of 500 μg/l zoledronate. A placebo mixture was administered in the remaining eight animals. Standardized uptake values were corrected for blood pool activity, providing mean tissue to background ratios (TBRmean)...
June 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29560553/development-of-an-off-the-shelf-tissue-engineered-sinus-valve-for-transcatheter-pulmonary-valve-replacement-a-proof-of-concept-study
#16
Sarah E Motta, Emanuela S Fioretta, Petra E Dijkman, Valentina Lintas, Luc Behr, Simon P Hoerstrup, Maximilian Y Emmert
Tissue-engineered heart valves with self-repair and regeneration properties may overcome the problem of long-term degeneration of currently used artificial prostheses. The aim of this study was the development and in vivo proof-of-concept of next-generation off-the-shelf tissue-engineered sinus valve (TESV) for transcatheter pulmonary valve replacement (TPVR). Transcatheter implantation of off-the-shelf TESVs was performed in a translational sheep model for up to 16 weeks. Transapical delivery of TESVs was successful and showed good acute and short-term performance (up to 8 weeks), which then worsened over time most likely due to a non-optimized in vitro valve design...
June 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29464655/glp-1-improves-diastolic-function-and-survival-in-heart-failure-with-preserved-ejection-fraction
#17
T Dung Nguyen, Yasushige Shingu, Paulo A Amorim, Christina Schenkl, Michael Schwarzer, Torsten Doenst
Heart failure with preserved ejection fraction (HFpEF) has emerged as a public health burden with currently no effective medication. We assessed the treatment effects of the incretin hormone glucagon-like peptide-1 (GLP-1) on cardiac metabolism and function in a model of HFpEF. Following aortic banding, rats developed HFpEF characterized by diastolic dysfunction, pulmonary congestion, and poor survival (38%). A 4-week GLP-1 treatment via osmotic pumps significantly improved survival (70%) and reduced left ventricular stiffness, diastolic dysfunction, and pulmonary congestion...
June 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29453746/effect-of-aerobic-exercise-on-treg-and-th17-of-rats-with-ischemic-cardiomyopathy
#18
Zhisong Chen, Wenwen Yan, Yu Mao, Yi Ni, Lin Zhou, Haoming Song, Wenjun Xu, Leming Wang, Yuqin Shen
Immune activation and inflammation participate in the progression of chronic heart failure (CHF). Th17 cells and CD4+CD25+ regulatory T (Treg) cells both come from naive Th cells and share reciprocal development pathways but exhibit opposite effects. We hypothesized that the Th17/Treg balance was impaired in patients with CHF, and exercise can improve it. Rats with ischemic cardiomyopathy were prepared by ligaturing the left anterior descending branch of the left coronary artery. Rats in training group were trained with treadmill; Th17 cells increased significantly while Treg cells significantly decreased in s by flow cytometry, and the peripheral blood level of IL-6, IL-17, and TNF-α was obviously elevated by ELISA assay...
June 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29392537/enhanced-cardiac-s100a1-expression-improves-recovery-from-global-ischemia-reperfusion-injury
#19
S Jungi, X Fu, A Segiser, M Busch, P Most, M Fiedler, T Carrel, H Tevaearai Stahel, S L Longnus, Henriette Most
Gene-targeted therapy with the inotropic Ca2 + -sensor protein S100A1 rescues contractile function in post-ischemic heart failure and is being developed towards clinical trials. Its proven beneficial effect on cardiac metabolism and mitochondrial function suggests a cardioprotective effect of S100A1 in myocardial ischemia-reperfusion injury (IRI). Fivefold cardiomyocyte-specific S100A1 overexpressing, isolated rat hearts perfused in working mode were subjected to 28 min ischemia (37 °C) followed by 60 min reperfusion...
June 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29392536/retrograde-coronary-venous-infusion-as-a-delivery-strategy-in-regenerative-cardiac-therapy-an-overview-of-preclinical-and-clinical-data
#20
REVIEW
Wouter A Gathier, Dirk Jan van Ginkel, Mira van der Naald, Frebus J van Slochteren, Pieter A Doevendans, Steven A J Chamuleau
An important aspect of cell therapy in the field of cardiac disease is safe and effective delivery of cells. Commonly used delivery strategies such as intramyocardial injection and intracoronary infusion both present with advantages and disadvantages. Therefore, alternative delivery routes are explored, such as retrograde coronary venous infusion (RCVI). Our aim is to evaluate safety and efficiency of RCVI by providing a complete overview of preclinical and clinical studies applying RCVI in a broad range of disease types and experimental models...
June 2018: Journal of Cardiovascular Translational Research
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