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https://www.readbyqxmd.com/read/29792351/peroxiredoxin-6-inhibits-osteogenic-differentiation-and-bone-formation-through-human-dental-pulp-stem-cells-and-induces-delayed-bone-development
#1
Kyung-Ran Park, Hyung-Mun Yun, In Jun Yeo, Sehyung Cho, Jin Tae Hong, Yong Seok Jeong
AIMS: Peroxiredoxins (PRDXs) are thiol-specific antioxidant enzymes that regulate redox balance that are critical for maintaining the cellular potential for self-renewal and stemness. Stem cell-based regenerative medicine is a promising approach in tissue reconstruction. However, to obtain functional cells for use in clinical applications, stem cell technology still requires improvements. RESULTS: In the present study, we found that PRDX6 levels were decreased during osteogenic differentiation in human dental pulp stem cells (hDPSCs)...
May 24, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29790042/orthopaedic-regenerative-tissue-engineering-en-route-to-the-holy-grail-disequilibrium-between-the-demand-and-the-supply-in-the-operating-room
#2
REVIEW
Ibrahim Fatih Cengiz, Hélder Pereira, Laura de Girolamo, Magali Cucchiarini, João Espregueira-Mendes, Rui L Reis, Joaquim Miguel Oliveira
Orthopaedic disorders are very frequent, globally found and often partially unresolved despite the substantial advances in science and medicine. Their surgical intervention is multifarious and the most favourable treatment is chosen by the orthopaedic surgeon on a case-by-case basis depending on a number of factors related with the patient and the lesion. Numerous regenerative tissue engineering strategies have been developed and studied extensively in laboratory through in vitro experiments and preclinical in vivo trials with various established animal models, while a small proportion of them reached the operating room...
May 22, 2018: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29786150/stem-cells-blood-vessels-and-angiogenesis-as-major-determinants-for-musculoskeletal-tissue-repair
#3
Johnny Huard
This manuscript summarizes 20 years of research from my laboratories at the University of Pittsburgh and, more recently, at the University of Texas Health Science Center at Houston and the Steadman Philippon Research Institute in Vail, Colorado. The discovery of muscle-derived stem cells (MDSCs) did not arise from a deliberate search to find a novel population of muscle cells with high regenerative potential, but instead was conceived in response to setbacks encountered while working in muscle cell transplantation for Duchenne muscular dystrophy (DMD)...
May 22, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29782797/low-temperature-synthesized-h-2-ti-3-o-7-nanotubes-with-a-high-co-2-adsorption-property-by-amine-modification
#4
Misaki Ota, Yuichiro Hirota, Yoshiaki Uchida, Yasuhiro Sakamoto, Norikazu Nishiyama
Carbon dioxide (CO2 ) capture and storage (CCS) technologies have been attracted attention in terms of tackling with global warming. To date, various CO2 capture technologies including solvents, membranes, cryogenics and solid adsorbents have been proposed. Currently, a liquid adsorption method for CO2 using amine solution (monoethanolamine) has been practically used. However, this liquid phase CO2 adsorption process requires heat regeneration, and it can cause many problems such as corrosion of equipment and degradation of the solution...
May 21, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29779094/-cell-grafting-a-new-approach-for-transferring-cytoplasmic-or-nuclear-genome-between-plants
#5
Vladimir Sidorov, Charles Armstrong, Thomas Ream, Xudong Ye, Annie Saltarikos
A new method based on mixing and wounding of callus tissue was used to transfer plastid or nuclear DNA between cells. Methods alternative to sexual hybridization can be powerful tools for crop improvement. We have developed a new hybridization technology based on wounding a mixed population of cells of two parents growing in vitro as callus ("cell grafting"), and have demonstrated the utility of this system for plastid or nuclear genome transfer. In our proof-of concept experiments, non-organized growing tissue (callus) from tobacco var...
May 19, 2018: Plant Cell Reports
https://www.readbyqxmd.com/read/29778643/inheritance-of-co-edited-genes-by-crispr-based-targeted-nucleotide-substitutions-in-rice
#6
Zenpei Shimatani, Ushio Fujikura, Hisaki Ishii, Yusuke Matsui, Minoru Suzuki, Yuki Ueke, Ken-Ichiro Taoka, Rie Terada, Keiji Nishida, Akihiko Kondo
The CRISPR/Cas9 system is a revolutionary genome-editing tool for directed gene editing in various organisms. Cas9 variants can be applied as molecular homing devices when combined with various functional effectors such as transcriptional activators or DNA modification enzymes. Target-AID is a synthetic complex of nuclease deficient Cas9 fused to an activation-induced cytidine deaminase (AID) that enables targeted nucleotide substitution (C to T or G to A). We previously demonstrated that the introduction of desired point mutations into target genes by Target-AID confers herbicide tolerance to rice callus...
April 25, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29769665/bioengineering-strategies-to-accelerate-stem-cell-therapeutics
#7
REVIEW
Christopher M Madl, Sarah C Heilshorn, Helen M Blau
Although only a few stem cell-based therapies are currently available to patients, stem cells hold tremendous regenerative potential, and several exciting clinical applications are on the horizon. Biomaterials with tuneable mechanical and biochemical properties can preserve stem cell function in culture, enhance survival of transplanted cells and guide tissue regeneration. Rapid progress with three-dimensional hydrogel culture platforms provides the opportunity to grow patient-specific organoids, and has led to the discovery of drugs that stimulate endogenous tissue-specific stem cells and enabled screens for drugs to treat disease...
May 2018: Nature
https://www.readbyqxmd.com/read/29765425/production-of-adult-human-synovial-fluid-derived-mesenchymal-stem-cells-in-stirred-suspension-culture
#8
Kristen D Jorgenson, David A Hart, Roman Krawetz, Arindom Sen
The chondrogenic potential of synovial fluid-derived mesenchymal stem cells (SF-MSCs) supports their use in cartilage regeneration strategies. However, their paucity in synovial fluid necessitates their proliferation in culture to generate clinically relevant quantities. Here it was determined that 125 mL stirred suspension bioreactors utilizing Cytodex-3 microcarrier beads represent a viable platform for the proliferation of these cells. During the inoculation phase, a bead loading of 2 g/L, an inoculation ratio of 4...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29763799/the-electrochemical-regeneration-of-granular-activated-carbons-a-review
#9
REVIEW
Rebecca V McQuillan, Geoffrey W Stevens, Kathryn A Mumford
The electrochemical treatment of exhausted granular activated carbon (GAC) has been identified as an effective alternative to traditional adsorbent regeneration methods (e.g. thermal, chemical, and microbial). However, despite its proven potential and initial investigation over two decades ago, the development of this technology has been progressing slowly, hindering its deployment in industrial applications. Thus, a review has been conducted that aims to present the fundamentals of GAC electrochemical regenerative methods, what research has been conducted to develop the technology to the present day, and lastly, identify limitations and future prospects associated with electrochemical methods...
May 1, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29763345/tissue-engineering-of-necrotic-dental-pulp-of-immature-teeth-with-apical-periodontitis-in-dogs-radiographic-and-histological-evaluation
#10
Eman A El Ashiry, Najlaa M Alamoudi, Mahmoud K El Ashiry, Hagar A Bastawy, Douaa A El Derwi, Hazem M Atta
AIM: To evaluate tissue engineering technology to regenerate pulp-dentin like tissues in pulp canals of immature necrotic permanent teeth with apical periodontitis in dogs. STUDY DESIGN: The study was performed on 36 teeth in 12 dogs. The experiment was carried out using split mouth design. In each dog 3 teeth were selected for implementing the study procedure. Apical periodontitis was induced in Group A and B teeth. Group (A): immature upper left 2nd permanent incisors that were transplanted with a construct of autologous dental pulp stem cells with growth factors seeded in a chitosn hydrogel scaffold...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29760723/applications-of-mesenchymal-stem-cells-in-sinus-lift-augmentation-as-a-dental-implant-technology
#11
REVIEW
Feridoun Parnia, Javad Yazdani, Solmaz Maleki Dizaj
The potential application of stem cell biology in human dentistry is a new and emerging field of research. The objective of the current review was to study the efficiency of mesenchymal stem cells (MSCs) in sinus lift augmentation (SLA). A literature review was performed in PubMed Central using MeSH keywords such as sinus lift, MSCs, dental implants, and augmentation. The searches involved full-text papers written in English, published in the past 10 years (2007-2017). The review included in vitro and in vivo studies on the use of MSCs in SLA...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29756585/animal-models-used-for-testing-hydrogels-in-cartilage-regeneration
#12
Chuntie Zhu, Qiong Wu, Xu Zhang, Fubo Chen, Xiyang Liu, Qixiang Yang, Lei Zhu
Focal cartilage or osteochondral lesions can be painful and detrimental. Besides pain and limited function of joints, cartilage defect is considered as one of the leading extrinsic risk factors for osteoarthritis (OA). Thus, clinicians and scientists have paid great attention to regenerative therapeutic methods for the early treatment of cartilaginous defects. Regenerative medicine, showing great hope for regenerating cartilage tissue, rely on the combination of biodegradable scaffolds and specific biological cues, such as growth factors, adhesive factors and genetic materials...
May 14, 2018: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29755977/wearable-technology-for-chronic-wound-monitoring-current-dressings-advancements-and-future-prospects
#13
REVIEW
Matthew S Brown, Brandon Ashley, Ahyeon Koh
Chronic non-healing wounds challenge tissue regeneration and impair infection regulation for patients afflicted with this condition. Next generation wound care technology capable of in situ physiological surveillance which can diagnose wound parameters, treat various chronic wound symptoms, and reduce infection at the wound noninvasively with the use of a closed loop therapeutic system would provide patients with an improved standard of care and an accelerated wound repair mechanism. The indicating biomarkers specific to chronic wounds include blood pressure, temperature, oxygen, pH, lactate, glucose, interleukin-6 (IL-6), and infection status...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29751848/differentiation-of-adipose-derived-stem-cells-into-schwann-cell-like-cells-through-intermittent-induction-potential-advantage-of-cellular-transient-memory-function
#14
Xun Sun, Yun Zhu, He-Yong Yin, Zhi-Yuan Guo, Feng Xu, Bo Xiao, Wen-Li Jiang, Wei-Min Guo, Hao-Ye Meng, Shi-Bi Lu, Yu Wang, Jiang Peng
BACKGROUND: Peripheral nerve injury (PNI) is a worldwide issue associated with severe social and economic burden. Autologous nerve grafting, the gold standard treatment for peripheral nerve defects, still has a number of technical limitations. Tissue engineering technology is a novel therapeutic strategy, and mesenchymal stromal cells (MSCs) are promising seed cells for nerve tissue engineering. However, the efficiency of traditional methods for inducing the differentiation of MSCs to Schwann cell-like cells (SCLCs) remains unsatisfactory...
May 11, 2018: Stem Cell Research & Therapy
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
#15
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/29742392/direct-reprogramming-of-mouse-fibroblasts-into-functional-skeletal-muscle-progenitors
#16
Ori Bar-Nur, Mattia F M Gerli, Bruno Di Stefano, Albert E Almada, Amy Galvin, Amy Coffey, Aaron J Huebner, Peter Feige, Cassandra Verheul, Priscilla Cheung, Duygu Payzin-Dogru, Sylvain Paisant, Anthony Anselmo, Ruslan I Sadreyev, Harald C Ott, Shahragim Tajbakhsh, Michael A Rudnicki, Amy J Wagers, Konrad Hochedlinger
Skeletal muscle harbors quiescent stem cells termed satellite cells and proliferative progenitors termed myoblasts, which play pivotal roles during muscle regeneration. However, current technology does not allow permanent capture of these cell populations in vitro. Here, we show that ectopic expression of the myogenic transcription factor MyoD, combined with exposure to small molecules, reprograms mouse fibroblasts into expandable induced myogenic progenitor cells (iMPCs). iMPCs express key skeletal muscle stem and progenitor cell markers including Pax7 and Myf5 and give rise to dystrophin-expressing myofibers upon transplantation in vivo...
May 8, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29740671/synchrotron-and-focal-plane-array-based-fourier-transform-infrared-spectroscopy-differentiates-the-basalis-and-functionalis-epithelial-endometrial-regions-and-identifies-putative-stem-cell-regions-of-human-endometrial-glands
#17
Georgios Theophilou, Camilo L M Morais, Diane E Halliwell, Kássio M G Lima, Josephine Drury, Pierre L Martin-Hirsch, Helen F Stringfellow, Dharani K Hapangama, Francis L Martin
The cyclical process of regeneration of the endometrium suggests that it may contain a cell population that can provide daughter cells with high proliferative potential. These cell lineages are clinically significant as they may represent clonogenic cells that may also be involved in tumourigenesis as well as endometriotic lesion development. To determine whether the putative stem cell location within human uterine tissue can be derived using vibrational spectroscopy techniques, normal endometrial tissue was interrogated by two spectroscopic techniques...
May 9, 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29736807/quantitative-detection-of-low-abundance-transcripts-at-single-cell-level-in-human-epidermal-keratinocytes-by-digital-droplet-reverse-transcription-polymerase-chain-reaction
#18
Frédéric Auvré, Julien Coutier, Michèle T Martin, Nicolas O Fortunel
Genetic and epigenetic characterization of the large cellular diversity observed within tissues is essential to understanding the molecular networks that ensure the regulation of homeostasis, repair, and regeneration, but also pathophysiological processes. Skin is composed of multiple cell lineages and is therefore fully concerned by this complexity. Even within one particular lineage, such as epidermal keratinocytes, different immaturity statuses or differentiation stages are represented, which are still incompletely characterized...
May 8, 2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29736579/combination-of-polymeric-supports-and-drug-delivery-systems-for-osteochondral-regeneration
#19
Luis Rojo
Musculoskeletal conditions have been defined by European National Health systems as one of the key themes which should be featured during the present decade as a consequence of the significant healthcare and social support costs. Among others, articular cartilage degeneration due to traumatic and degenerative lesion injury or other pathologies commonly results in the development of musculoskeletal disorders such as osteoarthritis and arthritis rheumatoid, eventually leading to progressive articular cartilage and joint destruction especially at osteochondral interphase, that account for more disability among the elderly than any other diseases constituting a global social challenge that needs a multidisciplinary response from the scientific community...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29736572/hyaluronic-acid
#20
Hélder Pereira, Duarte Andre Sousa, António Cunha, Renato Andrade, J Espregueira-Mendes, J Miguel Oliveira, Rui L Reis
In recent times, the field of tissue engineering and regenerative medicine (TERM) has considerably increased the extent of therapeutic strategies for clinical application in orthopedics. However, TERM approaches have its rules and requirements, in the respect of the biologic response of each tissue and bioactive agents which need to be considered, respected, and subject of ongoing studies. Different medical devices/products have been prematurely available on the market and used in clinics with limited success...
2018: Advances in Experimental Medicine and Biology
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