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Cell therapy myocardial infarction

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https://www.readbyqxmd.com/read/28087126/cardiac-lymphatics-a-new-avenue-for-therapeutics
#1
REVIEW
Taina Vuorio, Annakaisa Tirronen, Seppo Ylä-Herttuala
Recent progress in lymphatic vessel biology and in novel imaging techniques has established the importance of the lymphatic vasculature as part of the cardiovascular system. The lymphatic vessel network regulates many physiological processes important for heart function such as fluid balance, transport of extravasated proteins, and trafficking of immune cells. Therefore, lymphangiogenic therapy could be beneficial in the treatment of cardiovascular diseases, for example by improving reverse cholesterol transport (RCT) from atherosclerotic lesions or by resolving edema and fibrosis after myocardial infarction...
January 10, 2017: Trends in Endocrinology and Metabolism: TEM
https://www.readbyqxmd.com/read/28079007/novel-therapies-targeting-cardioprotection-and-regeneration
#2
Valeria Garrido, Evelyn Mendoza-Torres, Jaime A Riquelme, Ariel Díaz, Marcela Pizarro, Mario Bustamante, Myra N Chavez, María Paz Ocaranza, Rosemarie Mellado, Ramon Corbalan, Miguel L Allende, Sergio Lavandero
Cardiovascular disease is the leading cause of death worldwide. The heart is susceptible to pathologies that impact the myocardium directly, such myocardial infarction and consequent heart failure, as well as conditions with indirect cardiac effects, such cancer treatment-related cardiotoxicity. As the contractile cells of the heart, cardiomyocytes are essential for normal cardiac function. Various stress stimuli may result in transient damage or cell death in cardiomyocytes through apoptosis, necrosis or maladaptive autophagy...
January 12, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28072597/reperfusion-injury-in-st-segment-elevation-myocardial-infarction-the-final-frontier
#3
Gjin Ndrepepa, Roisin Colleran, Adnan Kastrati
ST-segment elevation myocardial infarction is a major cause of morbidity and mortality worldwide. Reperfusion injury (RI) following the opening of an occluded coronary artery mitigates the effect of reperfusion by further accentuating ischemic damage and increasing infarct size. Experimental studies have shown that nearly 50% of final infarct size is attributable to RI, an elusive phenomenon that remains resistant to treatment. This review proposes a hypothesis to explain the failure of strategies that have been used in an attempt to prevent RI...
January 7, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28058671/possible-muscle-repair-in-the-human-cardiovascular-system
#4
REVIEW
Linda Sommese, Alberto Zullo, Concetta Schiano, Francesco P Mancini, Claudio Napoli
The regenerative potential of tissues and organs could promote survival, extended lifespan and healthy life in multicellular organisms. Niches of adult stemness are widely distributed and lead to the anatomical and functional regeneration of the damaged organ. Conversely, muscular regeneration in mammals, and humans in particular, is very limited and not a single piece of muscle can fully regrow after a severe injury. Therefore, muscle repair after myocardial infarction is still a chimera. Recently, it has been recognized that epigenetics could play a role in tissue regrowth since it guarantees the maintenance of cellular identity in differentiated cells and, therefore, the stability of organs and tissues...
January 5, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28051180/human-heart-valve-derived-scaffold-improves-cardiac-repair-in-a-murine-model-of-myocardial-infarction
#5
Long Wan, Yao Chen, Zhenhua Wang, Weijun Wang, Sebastian Schmull, Jun Dong, Song Xue, Hans Imboden, Jun Li
Cardiac tissue engineering using biomaterials with or without combination of stem cell therapy offers a new option for repairing infarcted heart. However, the bioactivity of biomaterials remains to be optimized because currently available biomaterials do not mimic the biochemical components as well as the structural properties of native myocardial extracellular matrix. Here we hypothesized that human heart valve-derived scaffold (hHVS), as a clinically relevant novel biomaterial, may provide the proper microenvironment of native myocardial extracellular matrix for cardiac repair...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28049018/transactivation-of-the-epidermal-growth-factor-receptor-in-responses-to-myocardial-stress-and-cardioprotection
#6
REVIEW
Melissa E Reichelt, Shannon O'Brien, Walter G Thomas, John P Headrick
The epidermal growth factor receptor (EGFR) family comprises the ErbB1 (EGFR) and ErbB4 receptors as well as the 'co-receptors' ErbB2 (which does not bind EGF ligands) and ErbB3 (which lack tyrosine kinase activity). This family of receptors is essential for cardiac development, myocardial, renal and vascular function, and cardiac responses to physiological and pathological perturbations. The EGFR appears critical in protecting cardiac cells from injury, while considerable attention has focussed on neuregulin/ErbB4 signalling in potentially ameliorating cardiomyopathy/heart failure...
December 31, 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28045024/therapeutic-microparticles-functionalized-with-biomimetic-cardiac-stem-cell-membranes-and-secretome
#7
Junnan Tang, Deliang Shen, Thomas George Caranasos, Zegen Wang, Adam C Vandergriff, Tyler A Allen, Michael Taylor Hensley, Phuong-Uyen Dinh, Jhon Cores, Tao-Sheng Li, Jinying Zhang, Quancheng Kan, Ke Cheng
Stem cell therapy represents a promising strategy in regenerative medicine. However, cells need to be carefully preserved and processed before usage. In addition, cell transplantation carries immunogenicity and/or tumourigenicity risks. Mounting lines of evidence indicate that stem cells exert their beneficial effects mainly through secretion (of regenerative factors) and membrane-based cell-cell interaction with the injured cells. Here, we fabricate a synthetic cell-mimicking microparticle (CMMP) that recapitulates stem cell functions in tissue repair...
January 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28042316/localized-delivery-of-shrna-against-phd2-protects-the-heart-from-acute-myocardial-infarction-through-ultrasound-targeted-cationic-microbubble-destruction
#8
Li Zhang, Zhenxing Sun, Pingping Ren, Manjie You, Jing Zhang, Lingyun Fang, Jing Wang, Yihan Chen, Fei Yan, Hairong Zheng, Mingxing Xie
Hypoxia-inducible factor 1α (HIF-1α) plays a critical protective role in ischemic heart disease. Under normoxic conditions, HIF-1α was degraded by oxygen-dependent prolyl hydroxylase-2 (PHD2). Gene therapy has become a promising strategy to inhibit the degradation of HIF-1α and to improve cardiac function after ischemic injury. However, conventional gene delivery systems are difficult to achieve a targeted and localized gene delivery into the ischemic myocardia. Here, we report the localized myocardial delivery of shRNA against PHD2 through ultrasound-targeted microbubble destruction (UTMD) for protection the heart from acute myocardial infarction...
2017: Theranostics
https://www.readbyqxmd.com/read/28042087/melatonin-as-a-promising-agent-of-regulating-stem-cell-biology-and-its-application-in-disease-therapy
#9
REVIEW
Shuo Zhang, Simon Chen, Yuan Li, Yu Liu
Stem cells have emerged as an important approach to repair and regenerate damaged tissues or organs and show great therapeutic potential in a variety of diseases. However, the low survival of engrafted stem cells still remains a major challenge for stem cell therapy. As a major hormone from the pineal gland, melatonin has been shown to play an important role in regulating the physiological and pathological functions of stem cells, such as promoting proliferation, migration and differentiation. Thus, melatonin combined with stem cell transplantation displayed promising application potential in neurodegenerative diseases, liver cirrhosis, wound healing, myocardial infarction, kidney ischemia injury, osteoporosis, etc...
December 30, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28040596/recent-advances-in-cardiac-regeneration-stem-cell-biomaterial-and-growth-factors
#10
REVIEW
Mostafa Cheraghi, Mehrdad Namdari, Babak Negahdari, Ali Eatemadi
Myocardial infarction has been reported to be responsible for about 7.3 million deaths each year globally. Present treatments for myocardial infarction have been more palliative rather than curative. Over the past few years, stem cells have demonstrated its potency in regenerating damaged cardiac tissue, especially after myocardial infarction. However, limited short half-life of the protein and cell therapy and low transplanted cell survival rate as demonstrated via several clinical trials have lead to development of more potent and novel delivery systems like biomaterial delivery system and the use of various growth factors...
December 29, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28039940/epac-rap1-activated-mesenchymal-stem-cells-improve-cardiac-function%C3%A2-in-rat-model-of-myocardial-infarction
#11
Irfan Khan, Anwar Ali, Muhammad Aleem Akhter, Nadia Naeem, Maqsood Ahmed Chotani, Hana'a Iqbal, Nurul Kabir, Mehnaz Atiq, Asmat Salim
INTRODUCTION: Rap1, a member of Ras superfamily of small GTP-binding proteins, is involved in cardiovascular biology in numerous ways. It is an evolutionary conserved regulator of adhesion, polarity, differentiation and growth. AIMS: Our aim was to analyze Rap1 activated rat bone marrow mesenchymal stem cells (MSCs) for their potential role in adhesion and cardiac differentiation. METHODS: Myocardial infarction (MI) was produced in Sprague Dawley (SD) rats through occlusion of the left anterior descending coronary artery...
December 31, 2016: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28031416/route-of-delivery-modulates-the-efficacy-of-mesenchymal-stem-cell-therapy-for-myocardial-infarction-a-meta-analysis-of-preclinical-studies-and-clinical-trials
#12
Anthony Kanelidis, Courtney Premer, Juan G Lopez, Wayne Balkan, Joshua M Hare
RATIONALE: Accumulating data supports a therapeutic role for mesenchymal stem cell (MSC) therapy; however, there is no consensus on the optimal route of delivery. OBJECTIVE: We tested the hypothesis that the route of MSC delivery influences the reduction in infarct size (IS) and improvement in left ventricular ejection fraction (LVEF). METHODS AND RESULTS: We performed a meta-analysis investigating the effect of MSC therapy in acute myocardial infarction (AMI) and chronic ischemic cardiomyopathy (ICM) preclinical studies (58 studies; n=1165 mouse, rat, swine) which revealed a reduction in IS and improvement of LVEF in all animal models...
December 28, 2016: Circulation Research
https://www.readbyqxmd.com/read/28012165/stem-cell-therapy-for-chronic-ischaemic-heart-disease-and-congestive-heart-failure
#13
REVIEW
Sheila A Fisher, Carolyn Doree, Anthony Mathur, David P Taggart, Enca Martin-Rendon
BACKGROUND: A promising approach to the treatment of chronic ischaemic heart disease and congestive heart failure is the use of stem cells. The last decade has seen a plethora of randomised controlled trials developed worldwide, which have generated conflicting results. OBJECTIVES: The critical evaluation of clinical evidence on the safety and efficacy of autologous adult bone marrow-derived stem/progenitor cells as a treatment for chronic ischaemic heart disease and congestive heart failure...
24, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28008641/effects-of-mirnas-on-myocardial-apoptosis-by-modulating-mitochondria-related-proteins
#14
REVIEW
Yanfang Zhao, Murugavel Ponnusamy, Yanhan Dong, Lei Zhang, Kun Wang, Peifeng Li
Myocardial apoptosis play a vital role in pathogenesis of cardiovascular diseases. The intrinsic pathway of apoptosis (mitochondrial apoptosis pathway) and abnormal mitochondrial fission and fusion have a detrimental effect on cells under a variety of intracellular stresses including hypoxia, oxidative stress, drug toxicity or DNA damage and contributes to the development of heart failure (HF), myocardial infarction (MI), diabetic cardiomyopathy and ischemia/reperfusion injury (I/R). MicroRNAs (miRNAs) are endogenous short noncoding RNAs, which target 3'-untranslated region of mRNA to switch off gene expression...
December 23, 2016: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28006953/lymphocyte-communication-in-myocardial-ischemia-reperfusion-injury
#15
Stephen E Boag, Emanuele Andreano, Ioakim Spyridopoulos
SIGNIFICANCE: Myocardial ischaemia/reperfusion (I/R) is an important complication of reperfusion therapy for myocardial infarction. It is a complex process involving metabolic and immunological factors. To date no effective treatment has been identified. Recent Advances: Previous research has focused on the role of innate immune cells in I/R injury. In recent years increasing evidence has accumulated for an important role for adaptive immune cells, particularly T lymphocytes. Data from ST elevation myocardial infarction (STEMI) patients has identified prognostic significance for lymphocyte counts, particularly post-reperfusion lymphopenia...
December 23, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28003833/combined-msc-and-glp-1-therapy-modulates-collagen-remodeling-and-apoptosis-following-myocardial-infarction
#16
Elizabeth J Wright, Nigel W Hodson, Michael J Sherratt, Moustapha Kassem, Andrew L Lewis, Christine Wallrapp, Nadim Malik, Cathy M Holt
Background. Mesenchymal stem cells (MSCs) and glucagon-like peptide-1 (GLP-1) are being tested as treatment strategies for myocardial infarction (MI); however, their mechanisms in the heart are not fully understood. Methods. We examined the effects of MSCs, either native, or engineered to secrete a GLP-1 fusion protein (MSCs ± GLP-1), on human cardiomyocyte apoptosis in vitro. The effect on cardiac remodeling when encapsulated in alginate beads (CellBeads-MSC and CellBeads-MSC + GLP-1) was also evaluated in a pig MI model, whereby pigs were treated with Empty Beads, CellBeads-MSC, or CellBeads-MSC + GLP-1 and sacrificed at one or four weeks following MI...
2016: Stem Cells International
https://www.readbyqxmd.com/read/27993119/pathophysiology-of-myocardial-infarction-and-acute-management-strategies
#17
Daniel Petrovič, Miha Tibaut, Dušan Mekiš
Yearly, 13,2% of all deaths are attributable to coronary artery disease (CAD), which with 7.4 million deaths makes CAD leading cause of death in the world. In this review we discuss current knowledge in pathophysiology of atherosclerosis with its progression to stable CAD and its destabilization and complication with thrombus formation - myocardial infarction (MI). Next, we describe mechanisms of myocardial cell death in MI, ischemia-reperfusion injury, left-ventricular remodeling and complications of MI. Furthermore, we add acute management strategies concentrating on medical therapy, decision on reperfusion strategy, timing and cardiac protection by ischemic preconditioning, postconditioning and remote ischemic conditioning...
December 15, 2016: Cardiovascular & Hematological Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27979856/2016-russell-ross-memorial-lecture-in-vascular-biology-molecular-cellular-mechanisms-in-the-progression-of-atherosclerosis
#18
REVIEW
Ira Tabas
Atherosclerosis is initiated by the subendothelial accumulation of apoB-containing lipoproteins, which initiates a sterile inflammatory response dominated by monocyte-macrophages but including all classes of innate and adaptive immune cells. These inflammatory cells, together with proliferating smooth muscle cells and extracellular matrix, promote the formation of subendothelial lesions or plaques. In the vast majority of cases, these lesions do not cause serious clinical symptoms, which is due in part to a resolution-repair response that limits tissue damage...
December 15, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27965171/human-placenta-hydrogel-reduces-scarring-in-a-rat-model-of-cardiac-ischemia-and-enhances-cardiomyocyte-and-stem-cell-cultures
#19
Michael P Francis, Erick Breathwaite, Anna A Bulysheva, Frency Varghese, Rudy U Rodriguez, Sucharita Dutta, Iurii Semenov, Rebecca Ogle, Alexander Huber, Alexandra-Madelaine Tichy, Silvia Chen, Christian Zemlin
INTRODUCTION: Xenogeneic extracellular matrix (ECM) hydrogels have shown promise in remediating cardiac ischemia damage in animal models, yet analogous human ECM hydrogels have not been well development. An original human placenta-derived hydrogel (hpECM) preparation was thus generated for assessment in cardiomyocyte cell culture and therapeutic cardiac injection applications. METHODS AND RESULTS: Hybrid orbitrap-quadrupole mass spectrometry and ELISAs showed hpECM to be rich in collagens, basement membrane proteins, and regenerative growth factors (e...
December 10, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27943590/a-collagen-cardiac-patch-incorporating-alginate-microparticles-permits-the-controlled-release-of-hgf-and-igf-1-to-enhance-cardiac-stem-cell-migration-and-proliferation
#20
Hugh S O'Neill, Janice O'Sullivan, Niamh Porteous, Eduardo Ruiz Hernandez, Helena M Kelly, Fergal J O'Brien, Garry P Duffy
Cardiac Stem Cells (CSCs) represent a logical cell type to exploit as a regenerative treatment option for tissue damage accrued as a result of a myocardial infarction (MI). However, the isolation and expansion of CSCs prior to cell transplantation is time-consuming, costly and invasive, and the reliability of cell expansion may also prove to be a major obstacle in the clinical application of CSC based transplantation therapy after a MI. In order to overcome this, we propose the incorporation of growth factor-eluting alginate microparticles (MPs) into collagen-based scaffolds as an implantable biomaterial to promote the recruitment and expansion of CSCs in the myocardium...
December 12, 2016: Journal of Tissue Engineering and Regenerative Medicine
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