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cardiovascular tissue engineering

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https://www.readbyqxmd.com/read/27916652/exploring-pericyte-and-cardiac-stem-cell-secretome-unveils-new-tactics-for-drug-discovery
#1
REVIEW
Georgina M Ellison-Hughes, Paolo Madeddu
Ischaemic diseases remain a major cause of morbidity and mortality despite continuous advancements in medical and interventional treatments. Moreover, available drugs reduce symptoms associated with tissue ischaemia, without providing a definitive repair. Cardiovascular regenerative medicine is an expanding field of research that aims to improve the treatment of ischaemic disorders through restorative methods, such as gene therapy, stem cell therapy, and tissue engineering. Stem cell transplantation has salutary effects through direct and indirect actions, the latter being attributable to growth factors and cytokines released by stem cells and influencing the endogenous mechanisms of repair...
December 1, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27884781/epigenetic-mechanisms-underlying-lifespan-and-age-related-effects-of-dietary-restriction-and-the-ketogenic-diet
#2
Cesar L Moreno, Charles V Mobbs
Aging constitutes the central risk factor for major diseases including many forms of cancer, neurodegeneration, and cardiovascular diseases. The aging process is characterized by both global and tissue-specific changes in gene expression across taxonomically diverse species. While aging has historically been thought to entail cell-autonomous, even stochastic changes, recent evidence suggests that modulation of this process can be hierarchal, wherein manipulations of nutrient-sensing neurons (e.g., in the hypothalamus) produce peripheral effects that may modulate the aging process itself...
November 21, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27871114/bone-marrow-stromal-stem-cells-in-tissue-engineering-and-regenerative-medicine
#3
A Polymeri, W V Giannobile, D Kaigler
Bone marrow stromal stem cells (BMSCs) are adult multipotent cells, which have the potential to differentiate into cell types of mesodermal origin, namely osteocytes, adipocytes, and chondrocytes. Due to their accessibility and expansion potential, BMSCs have historically held therapeutic promise in tissue engineering and regenerative medicine applications. More recently, it has been demonstrated that not only can bone marrow stromal stem cells directly participate in tissue regeneration, but they also have the capacity to migrate to distant sites of tissue injury, where they can participate in tissue repair either directly through their differentiation or indirectly through paracrine mechanisms...
November 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27866022/novel-approaches-toward-the-generation-of-bioscaffolds-as-a-potential-therapy-in-cardiovascular-tissue-engineering
#4
REVIEW
Fahimeh Shahabipour, Maciej Banach, Thomas P Johnston, Matteo Pirro, Amirhossein Sahebkar
Cardiovascular disease associated with myocardial infarction (MI) is among the leading causes of mortality worldwide, in part, due to the limited regenerative capacity of tissues. Although various approaches have been employed to generate bioartificial myocardial tissues, including surgical reconstruction and the use of biosynthetic or biological cell-free grafts, many challenges still remain. Natural biomaterials based on decellularization have made significant inroads into the development of favorable biomatrices for myocardial tissue regeneration...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27854552/regulation-of-sequential-release-of-growth-factors-using-bilayer-polymeric-nanoparticles-for-cardiac-tissue-engineering
#5
Mohammad Izadifar, Michael E Kelly, Xiongbiao Chen
AIM: Cardiac tissue engineering aims to develop engineered constructs for myocardial infarction repair, where a challenge is the control of growth factor (GF) sequential release. Herein, bilayer polymeric nanoparticles composed of a GF-encapsulating core surrounded by rate-regulating shell were developed for sequential GF release. MATERIALS & METHODS: Single and bilayer polymeric nanoparticles were fabricated, characterized and biologically assessed. A novel 'Geno-Neural model' was developed and validated for rate-programming of the nanoparticles...
November 17, 2016: Nanomedicine
https://www.readbyqxmd.com/read/27845938/elastin-like-recombinamers-multilayered-nanofibrous-scaffolds-for-cardiovascular-applications
#6
M Putzu, F Causa, V Nele, I González de Torre, J C Rodriguez-Cabello, P A Netti
Coronary angioplasty is the most widely used technique for removing atherosclerotic plaques in blood vessels. The regeneration of the damaged intima layer after this treatment is still one of the major challenges in the field of cardiovascular tissue engineering. Different polymers have been used in scaffold manufacturing in order to improve tissue regeneration. Elastin-mimetic polymers are a new class of molecules that have been synthesized and used to obtain small diameter fibers with specific morphological characteristics...
November 15, 2016: Biofabrication
https://www.readbyqxmd.com/read/27834758/current-status-of-tissue-engineering-heart-valve
#7
Toshiharu Shinoka, Hideki Miyachi
The development of surgically implantable heart valve prostheses has contributed to improved outcomes in patients with cardiovascular disease. However, there are drawbacks, such as risk of infection and lack of growth potential. Tissue-engineered heart valve (TEHV) holds great promise to address these drawbacks as the ideal TEHV is easily implanted, biocompatible, non-thrombogenic, durable, degradable, and ultimately remodels into native-like tissue. In general, three main components used in creating a tissue-engineered construct are (1) a scaffold material, (2) a cell type for seeding the scaffold, and (3) a subsequent remodeling process driven by cell accumulation and proliferation, and/or biochemical and mechanical signaling...
November 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27834123/translational-applications-of-tissue-engineering-in-cardiovascular-medicine
#8
Y Murat Elçin, Arin Dogan, Eser Elçin
Cardiovascular diseases are the leading cause of worldwide deaths. Current paradigm in medicine seeks novel approaches for the treatment of progressive or end-stage diseases. The organ transplantation option is limited in availability and unfortunately, a great number of patients are lost while waiting for donor organs. Animal studies have shown that upon myocardial infarction, it may be possible to stop adverse remodeling in its tracks and reverse with tissue engineering methods. Regaining the myocardium function and avoiding further deterioration towards heart failure can benefit millions of people with a significantly lesser burden on healthcare systems worldwide...
November 11, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27814290/influence-of-nanoporous-poly-ether-imide-particle-extracts-on-human-aortic-endothelial-cells-haecs
#9
Reddi K Kumar, Sayantani Basu, Horst-Dieter Lemke, Joachim Jankowski, Karl Kratz, Andreas Lendlein, Sarada D Tetali
Accumulated uremic toxins like indoxyl sulphate, hippuric acid and p-cresyl sulphates in renal failure patients stimulate proinflammatory effects, and consequently kidney and cardiovascular diseases. Low clearance rate of these uremic toxins from the blood of uremic patients by convention techniques like hemodialysis is due to their strong covalent albumin binding (greater than 95%) and hydrophobic nature, which led to alternatives like usage of hydrophobic adsorber's in removing these toxins from the plasma of kidney patients...
November 4, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27780764/biodegradable-and-biomimetic-elastomeric-scaffolds-for-tissue-engineered-heart-valves
#10
REVIEW
Yingfei Xue, Vinayak Sant, Julie Phillippi, Shilpa Sant
Valvular heart diseases are the third leading cause of cardiovascular disease, resulting in more than 25,000 deaths annually in the United States. Heart valve tissue engineering (HVTE) has emerged as a putative treatment strategy such that the designed construct would ideally withstand native dynamic mechanical environment, guide regeneration of the diseased tissue and more importantly, have the ability to grow with the patient. These desired functions could be achieved by biomimetic design of tissue-engineered constructs that recapitulate in vivo heart valve microenvironment with biomimetic architecture, optimal mechanical properties and possess suitable biodegradability and biocompatibility...
October 22, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27778466/a-double-chamber-rotating-bioreactor-for-enhanced-tubular-tissue-generation-from-human-mesenchymal-stem-cells
#11
I Stefani, M A Asnaghi, J J Cooper-White, S Mantero
Cardiovascular diseases represent a major global health burden, with high rates of mortality and morbidity. Autologous grafts are commonly used to replace damaged or failing blood vessels, however such approaches are hampered by the scarcity of suitable graft tissue, donor site morbidity and poor long-term stability. Tissue engineering has been investigated as a means by which exogenous vessel grafts can be produced, with varying levels of success to date, a result of mismatched mechanical properties of these vessel substitutes and inadequate ex vivo vessel tissue genesis...
October 24, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27778297/intrinsic-cell-stress-is-independent-of-organization-in-engineered-cell-sheets
#12
Inge A E W van Loosdregt, Sylvia Dekker, Patrick W Alford, Cees W J Oomens, Sandra Loerakker, Carlijn V C Bouten
Understanding cell contractility is of fundamental importance for cardiovascular tissue engineering, due to its major impact on the tissue's mechanical properties as well as the development of permanent dimensional changes, e.g., by contraction or dilatation of the tissue. Previous attempts to quantify contractile cellular stresses mostly used strongly aligned monolayers of cells, which might not represent the actual organization in engineered cardiovascular tissues such as heart valves. In the present study, therefore, we investigated whether differences in organization affect the magnitude of intrinsic stress generated by individual myofibroblasts, a frequently used cell source for in vitro engineered heart valves...
October 24, 2016: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/27737941/meeting-report-for-nih-2016-progenitor-cell-biology-consortium-cardiovascular-tissue-engineering-2016
#13
Ramaswamy Kannappan, Jianyi Zhang
No abstract text is available yet for this article.
October 14, 2016: Circulation Research
https://www.readbyqxmd.com/read/27724974/combined-transplantation-of-mesenchymal-stem-cells-and-endothelial-progenitor-cells-for-tissue-engineering-a-systematic-review-and-meta-analysis
#14
Kunming Sun, Zheng Zhou, Xinxin Ju, Yang Zhou, Jiaojiao Lan, Dongdong Chen, Hongzhi Chen, Manli Liu, Lijuan Pang
BACKGROUND: Combined cell implantation has been widely applied in tissue engineering in recent years. In this meta-analysis, we aimed to establish whether the combined transplantation of mesenchymal stem cells (MSCs) and endothelial progenitor cells (EPCs) promotes angiogenesis and tissue repair, compared with transplantation of a single cell type, following tissue injury or during tissue regeneration. METHODS: The electronic databases PubMed, EMBASE, MEDLINE, Chinese Biomedical Literature, and China National Knowledge Infrastructure were searched in this systematic review and meta-analysis...
October 10, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27721705/cardiovascular-regenerative-technologies-update-and-future-outlook
#15
Anna Mallone, Benedikt Weber, Simon P Hoerstrup
In the effort of improving treatment for cardiovascular disease (CVD), scientists struggle with the lack of the regenerative capacities of finally differentiated cardiovascular tissues. In this context, the advancements in regenerative medicine contributed to the development of cell-based therapies as well as macro- and micro-scale tissue-engineering technologies. The current experimental approaches focus on different regenerative strategies including a broad spectrum of techniques such as paracrine-based stimulation of autologous cardiac stem cells, mesenchymal cell injections, 3D microtissue culture techniques and vascular tissue-engineering methods...
July 2016: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/27710832/bioprinting-3d-microfibrous-scaffolds-for-engineering-endothelialized-myocardium-and-heart-on-a-chip
#16
Yu Shrike Zhang, Andrea Arneri, Simone Bersini, Su-Ryon Shin, Kai Zhu, Zahra Goli-Malekabadi, Julio Aleman, Cristina Colosi, Fabio Busignani, Valeria Dell'Erba, Colin Bishop, Thomas Shupe, Danilo Demarchi, Matteo Moretti, Marco Rasponi, Mehmet Remzi Dokmeci, Anthony Atala, Ali Khademhosseini
Engineering cardiac tissues and organ models remains a great challenge due to the hierarchical structure of the native myocardium. The need of integrating blood vessels brings additional complexity, limiting the available approaches that are suitable to produce integrated cardiovascular organoids. In this work we propose a novel hybrid strategy based on 3D bioprinting, to fabricate endothelialized myocardium. Enabled by the use of our composite bioink, endothelial cells directly bioprinted within microfibrous hydrogel scaffolds gradually migrated towards the peripheries of the microfibers to form a layer of confluent endothelium...
December 2016: Biomaterials
https://www.readbyqxmd.com/read/27692954/tissue-engineering-of-the-heart-an-evolving-paradigm
#17
Gordana Vunjak-Novakovic
Tissue-engineered regeneration of a failing human heart remains a major challenge, while cardiovascular disease continues to take more lives than all cancers combined. Much has been learned from the basic and clinical studies, with the most interesting developments happening at the interfaces of disciplines. This seems to be the right time to step back and rethink the evolving paradigm of tissue engineering, and to reflect about the most promising directions to take. We clearly need new therapeutic modalities that are effective and yet simple enough to be practical, and the field is looking into the therapeutic potential of stem-progenitor cells, cardiac and vascular, that are enabled by bioactive factors and functionalized biomaterials...
September 6, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27673413/vitreous-cryopreservation-of-human-umbilical-vein-endothelial-cells-with-low-concentration-of-cryoprotective-agents-for-vascular-tissue-engineering
#18
Yuanyuan Zheng, Gang Zhao, Fazil Fazil Panhwar, Xiaoming He
Cryopreservation of human umbilical vein endothelial cells (HUVECs) is important to tissue engineering applications and the study of the role of endothelial cells in cardiovascular and cerebrovascular diseases. The traditional methods for cryopreservation by vitrification (cooling samples to a cryogenic temperature without apparent freezing) using high concentration of cryoprotective agents (CPAs) and slow-freezing are suboptimal due to the severe toxicity of high concentration of CPAs and ice formation induced cryoinjuries, respectively...
September 27, 2016: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/27661443/phage-display-technology-in-biomaterials-engineering-progress-and-opportunities-for-applications-in-regenerative-medicine
#19
Ivone M Martins, Rui L Reis, Helena S Azevedo
The field of regenerative medicine has been gaining momentum steadily over the past few years. The emphasis in regenerative medicine is to use various in vitro and in vivo approaches that leverage the intrinsic healing mechanisms of the body to treat patients with disabling injuries and chronic diseases such as diabetes, osteoarthritis, and degenerative disorders of the cardiovascular and central nervous system. Phage display has been successfully employed to identify peptide ligands for a wide variety of targets, ranging from relatively small molecules (enzymes, cell receptors) to inorganic, organic, and biological (tissues) materials...
October 10, 2016: ACS Chemical Biology
https://www.readbyqxmd.com/read/27651545/suppression-of-transforming-growth-factor-%C3%AE-signaling-delays-cellular-senescence-and-preserves-the-function-of-endothelial-cells-derived-from-human-pluripotent-stem-cells
#20
Hao Bai, Yongxing Gao, Dixie L Hoyle, Tao Cheng, Zack Z Wang
: : Transplantation of vascular cells derived from human pluripotent stem cells (hPSCs) offers an attractive noninvasive method for repairing the ischemic tissues and for preventing the progression of vascular diseases. Here, we found that in a serum-free condition, the proliferation rate of hPSC-derived endothelial cells is quickly decreased, accompanied with an increased cellular senescence, resulting in impaired gene expression of endothelial nitric oxide synthase (eNOS) and impaired vessel forming capability in vitro and in vivo...
September 20, 2016: Stem Cells Translational Medicine
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