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https://www.readbyqxmd.com/read/29786560/microfabrication-of-liver-and-heart-tissues-for-drug-development
#1
REVIEW
Grace E Brown, Salman R Khetani
Drug-induced liver- and cardiotoxicity remain among the leading causes of preclinical and clinical drug attrition, marketplace drug withdrawals and black-box warnings on marketed drugs. Unfortunately, animal testing has proven to be insufficient for accurately predicting drug-induced liver- and cardiotoxicity across many drug classes, likely due to significant differences in tissue functions across species. Thus, the field of in vitro human tissue engineering has gained increasing importance over the last 10 years...
July 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29776289/in-situ-heart-valve-tissue-engineering-using-the-innate-immune-response-to-do-the-hard-work
#2
EDITORIAL
Farhan Zafar, David L S Morales
No abstract text is available yet for this article.
June 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29767196/strategies-for-directing-cells-into-building-functional-hearts-and-parts
#3
REVIEW
Mahboubeh Jafarkhani, Zeinab Salehi, Reza Kowsari-Esfahan, Mohammad Ali Shokrgozar, M Rezaa Mohammadi, Jayakumar Rajadas, Masoud Mozafari
The increasing population of patients with heart disease and the limited availability of organs for transplantation have encouraged multiple strategies to fabricate healthy implantable cardiac tissues. One of the main challenges in cardiac tissue engineering is to direct cell behaviors to form functional three-dimensional (3D) biomimetic constructs. This article provides a brief review on various cell sources used in cardiac tissue engineering and highlights the effect of scaffold-based signals such as topographical and biochemical cues and stiffness...
May 16, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29750131/tissue-engineering-toward-organ-specific-regeneration-and-disease-modeling
#4
Christian Mandrycky, Kiet Phong, Ying Zheng
Tissue engineering has been recognized as a translational approach to replace damaged tissue or whole organs. Engineering tissue, however, faces an outstanding knowledge gap in the challenge to fully recapitulate complex organ-specific features. Major components, such as cells, matrix, and architecture, must each be carefully controlled to engineer tissue-specific structure and function that mimics what is found in vivo. Here we review different methods to engineer tissue, and discuss critical challenges in recapitulating the unique features and functional units in four major organs-the kidney, liver, heart, and lung, which are also the top four candidates for organ transplantation in the USA...
September 2017: MRS Communications
https://www.readbyqxmd.com/read/29749932/cardiac-optogenetics-2018
#5
REVIEW
Patrick M Boyle, Thomas V Karathanos, Natalia A Trayanova
Cardiac optogenetics is an emergent research area involving the delivery of light-sensitive proteins (opsins) to excitable heart tissue to enable optical modulation of cardiac electrical function. Optogenetic stimulation has many noteworthy advantages over conventional electrical methods, including selective electrophysiological modulation in specifically targeted cell subpopulations, high-resolution spatiotemporal control via patterned illumination, and use of different opsins to elicit inward or outward transmembrane current...
February 2018: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29749108/biomaterial-characterization-of-off-the-shelf-decellularized-porcine-pericardial-tissue-for-use-in-prosthetic-valvular-applications
#6
Joshua A Choe, Soumen Jana, Brandon J Tefft, Ryan S Hennessy, Jason Go, David Morse, Amir Lerman, Melissa D Young
Fixed pericardial tissue is commonly used for commercially available xenograft valve implants, and has proven durability, but lacks the capability to remodel and grow. Decellularized porcine pericardial tissue has the promise to outperform fixed tissue and remodel, but the decellularization process has been shown to damage the collagen structure and reduce mechanical integrity of the tissue. Therefore, a comparison of uniaxial tensile properties was performed on decellularized, decellularized-sterilized, fixed, and native porcine pericardial tissue, versus native valve leaflet cusps...
May 10, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29744562/mussel-inspired-3d-fiber-scaffolds-for-heart-on-a-chip-toxicity-studies-of-engineered-nanomaterials
#7
Seungkuk Ahn, Herdeline Ann M Ardoña, Johan U Lind, Feyisayo Eweje, Sean L Kim, Grant M Gonzalez, Qihan Liu, John F Zimmerman, Georgios Pyrgiotakis, Zhenyuan Zhang, Juan Beltran-Huarac, Paul Carpinone, Brij M Moudgil, Philip Demokritou, Kevin Kit Parker
Due to the unique physicochemical properties exhibited by materials with nanoscale dimensions, there is currently a continuous increase in the number of engineered nanomaterials (ENMs) used in consumer goods. However, several reports associate ENM exposure to negative health outcomes such as cardiovascular diseases. Therefore, understanding the pathological consequences of ENM exposure represents an important challenge, requiring model systems that can provide mechanistic insights across different levels of ENM-based toxicity...
May 10, 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29743347/computational-modeling-guides-tissue-engineered-heart-valve-design-for-long-term-in-vivo-performance-in-a-translational-sheep-model
#8
Maximilian Y Emmert, Boris A Schmitt, Sandra Loerakker, Bart Sanders, Hendrik Spriestersbach, Emanuela S Fioretta, Leon Bruder, Kerstin Brakmann, Sarah E Motta, Valentina Lintas, Petra E Dijkman, Laura Frese, Felix Berger, Frank P T Baaijens, Simon P Hoerstrup
Valvular heart disease is a major cause of morbidity and mortality worldwide. Current heart valve prostheses have considerable clinical limitations due to their artificial, nonliving nature without regenerative capacity. To overcome these limitations, heart valve tissue engineering (TE) aiming to develop living, native-like heart valves with self-repair, remodeling, and regeneration capacity has been suggested as next-generation technology. A major roadblock to clinically relevant, safe, and robust TE solutions has been the high complexity and variability inherent to bioengineering approaches that rely on cell-driven tissue remodeling...
May 9, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29741611/crispr-cas9-editing-in-human-pluripotent-stem-cell-cardiomyocytes-highlights-arrhythmias-hypocontractility-and-energy-depletion-as-potential-therapeutic-targets-for-hypertrophic-cardiomyopathy
#9
Diogo Mosqueira, Ingra Mannhardt, Jamie R Bhagwan, Katarzyna Lis-Slimak, Puspita Katili, Elizabeth Scott, Mustafa Hassan, Maksymilian Prondzynski, Stephen C Harmer, Andrew Tinker, James G W Smith, Lucie Carrier, Philip M Williams, Daniel Gaffney, Thomas Eschenhagen, Arne Hansen, Chris Denning
Aims: Sarcomeric gene mutations frequently underlie hypertrophic cardiomyopathy (HCM), a prevalent and complex condition leading to left ventricle thickening and heart dysfunction. We evaluated isogenic genome-edited human pluripotent stem cell-cardiomyocytes (hPSC-CM) for their validity to model, and add clarity to, HCM. Methods and results: CRISPR/Cas9 editing produced 11 variants of the HCM-causing mutation c.C9123T-MYH7 [(p.R453C-β-myosin heavy chain (MHC)] in 3 independent hPSC lines...
May 8, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29740580/engineering-scalable-manufacturing-of-high-quality-stem-cell-derived-cardiomyocytes-for-cardiac-tissue-repair
#10
REVIEW
Kaitlin K Dunn, Sean P Palecek
Recent advances in the differentiation and production of human pluripotent stem cell (hPSC)-derived cardiomyocytes (CMs) have stimulated development of strategies to use these cells in human cardiac regenerative therapies. A prerequisite for clinical trials and translational implementation of hPSC-derived CMs is the ability to manufacture safe and potent cells on the scale needed to replace cells lost during heart disease. Current differentiation protocols generate fetal-like CMs that exhibit proarrhythmogenic potential...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29737043/bioreactors-for-cardiac-tissue-engineering
#11
REVIEW
Jesus Paez-Mayorga, Gustavo Hernández-Vargas, Guillermo U Ruiz-Esparza, Hafiz M N Iqbal, Xichi Wang, Yu Shrike Zhang, Roberto Parra-Saldivar, Ali Khademhosseini
The advances in biotechnology, biomechanics, and biomaterials can be used to develop organ models that aim to accurately emulate their natural counterparts. Heart disease, one of the leading causes of death in modern society, has attracted particular attention in the field of tissue engineering. To avoid incorrect prognosis of patients suffering from heart disease, or from adverse consequences of classical therapeutic approaches, as well as to address the shortage of heart donors, new solutions are urgently needed...
May 8, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29734152/cell-sheet-engineering-and-kidney-diseases
#12
Masatoshi Oka, Yoei Miyabe, Naoko Sugiura, Kosaku Nitta
Treatment using the cell sheet technology has been applied to various organs, including the cornea, heart, esophagus, periodontium, cartilage, middle ear, and lungs. It has been shown that the therapeutic efficacy of cell sheet transplantation involves 2 aspects, supplementation of cells and provision of cytokines to the affected organ. In addition, cell sheet transplantation also promotes repair of damage through the paracrine effects of cytokines derived from the transplanted cells. It is known that in cases of cell transplantation by injection, the transplanted cells are less likely to differentiate into renal tissue to supply cells, but repair is promoted by the actions of the transplanted cell-derived renotropic factors...
2018: Contributions to Nephrology
https://www.readbyqxmd.com/read/29721495/current-strategies-for-the-manufacture-of-small-size-tissue-engineering-vascular-grafts
#13
REVIEW
Michele Carrabba, Paolo Madeddu
Occlusive arterial disease, including coronary heart disease (CHD) and peripheral arterial disease (PAD), is the main cause of death, with an annual mortality incidence predicted to rise to 23.3 million worldwide by 2030. Current revascularization techniques consist of angioplasty, placement of a stent, or surgical bypass grafting. Autologous vessels, such as the saphenous vein and internal thoracic artery, represent the gold standard grafts for small-diameter vessels. However, they require invasive harvesting and are often unavailable...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29716778/fatal-accidental-inhalation-of-brake-cleaner-aerosols
#14
F Veit, W Martz, C G Birngruber, R B Dettmeyer
Brake cleaner liquid is commonly used for cleaning of engines and motor parts. The commercially available products usually contain mainly volatile organic compounds. As a consequence brake cleaner evaporates fast and almost completely from the cleaned surface. This case report presents a fatal accidental inhalation of brake cleaner liquid aerosols due to the attempted cleaning of a boat engine. A 16year old boy was found lifeless in the engine compartment of a boat engine. In close proximity to the body, the police found cleanings wipes soaked with brake cleaner as well as a pump spray bottle filled with brake cleaner...
April 23, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29703705/integration-of-radiobiological-modeling-and-indices-in-comparative-plan-evaluation-a-study-comparing-vmat-and-3d-crt-in-patients-with-nsclc
#15
Soumyajit Roy, Iulian Badragan, Sheikh Nisar Ahmed, Michael Sia, Jorawur Singh, Gaurav Bahl
PURPOSE: The purpose of this article was to generate an algorithm to calculate radiobiological endpoints and composite indices and use them to compare volumetric modulated arc therapy (VMAT) and 3-dimensional conformal radiation therapy (3D-CRT) techniques in patients with locally advanced non-small cell lung cancer. METHODS AND MATERIALS: The study included 25 patients with locally advanced non-small cell lung cancer treated with 3D-CRT at our center between January 1, 2010, and December 31, 2014...
March 1, 2018: Practical Radiation Oncology
https://www.readbyqxmd.com/read/29702745/aortic-valve-cell-seeding-into-decellularized-animal-pericardium-by-perfusion-assisted-bioreactor
#16
Francesco Amadeo, Federica Boschetti, Gianluca Polvani, Cristina Banfi, Maurizio Pesce, Rosaria Santoro
Animal-derived pericardium is the elective tissue employed in manufacturing heart valve prostheses. The preparation of this tissue for biological valves production consists in fixation with aldehydes, which reduces, but not eliminates, the xenoantigens and the donor cellular material. As a consequence, especially in patients below 65-70 years of age, the employment of pericardium containing valve substitutes is not indicated due to progressive calcification that causes tissue degeneration and recurrence of valve insufficiency...
April 27, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29701314/reconstruction-of-structure-and-function-in-tissue-engineering-of-solid-organs-toward-simulation-of-natural-development-based-on-decellularization
#17
REVIEW
Chen-Xi Zheng, Bing-Dong Sui, Cheng-Hu Hu, Xin-Yu Qiu, Pan Zhao, Yan Jin
Failure of solid organs, such as heart, liver and kidney, remains a major cause of the world's mortality due to critical shortage of donor organs. Tissue engineering, which uses elements including cells, scaffolds and growth factors to fabricate functional organs in vitro, is a promising strategy to mitigate the scarcity of transplantable organs. Within recent years, different construction strategies which guide the combination of tissue engineering elements have been applied in solid organ tissue engineering and have achieved much progress...
April 27, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29696148/using-acellular-bioactive-extracellular-matrix-scaffolds-to-enhance-endogenous-cardiac-repair
#18
Daniyil A Svystonyuk, Holly E M Mewhort, Paul W M Fedak
An inability to recover lost cardiac muscle following acute ischemic injury remains the biggest shortcoming of current therapies to prevent heart failure. As compared to standard medical and surgical treatments, tissue engineering strategies offer the promise of improved heart function by inducing regeneration of functional heart muscle. Tissue engineering approaches that use stem cells and genetic manipulation have shown promise in preclinical studies but have also been challenged by numerous critical barriers preventing effective clinical translational...
2018: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29695981/cardiac-restoration-stemming-from-the-placenta-tree-insights-from-fetal-and-perinatal-cell-biology
#19
REVIEW
Sveva Bollini, Antonietta R Silini, Asmita Banerjee, Susanne Wolbank, Carolina Balbi, Ornella Parolini
Efficient cardiac repair and ultimate regeneration still represents one of the main challenges of modern medicine. Indeed, cardiovascular disease can derive from independent conditions upsetting heart structure and performance: myocardial ischemia and infarction (MI), pharmacological cardiotoxicity, and congenital heart defects, just to name a few. All these disorders have profound consequences on cardiac tissue, inducing the onset of heart failure over time. Since the cure is currently represented by heart transplantation, which is extremely difficult due to the shortage of donors, much effort is being dedicated to developing innovative therapeutic strategies based on stem cell exploitation...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29693652/precisely-printable-and-biocompatible-silk-fibroin-bioink-for-digital-light-processing-3d-printing
#20
Soon Hee Kim, Yeung Kyu Yeon, Jung Min Lee, Janet Ren Chao, Young Jin Lee, Ye Been Seo, Md Tipu Sultan, Ok Joo Lee, Ji Seung Lee, Sung-Il Yoon, In-Sun Hong, Gilson Khang, Sang Jin Lee, James J Yoo, Chan Hum Park
Although three-dimensional (3D) bioprinting technology has gained much attention in the field of tissue engineering, there are still several significant engineering challenges to overcome, including lack of bioink with biocompatibility and printability. Here, we show a bioink created from silk fibroin (SF) for digital light processing (DLP) 3D bioprinting in tissue engineering applications. The SF-based bioink (Sil-MA) was produced by a methacrylation process using glycidyl methacrylate (GMA) during the fabrication of SF solution...
April 24, 2018: Nature Communications
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