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https://www.readbyqxmd.com/read/29044933/cross-tissue-identification-of-somatic-stem-and-progenitor-cells-using-a-single-cell-rna-seq-derived-gene-signature
#1
Petra C Schwalie, Paloma Ordonez Moran, Joerg Huelsken, Bart Deplancke
A long-standing question in biology is whether multipotent somatic stem and progenitor cells (SSPCs) feature molecular properties that could guide their system-independent identification. Population-based transcriptomic studies have so far not been able to provide a definite answer, given the rarity and heterogeneous nature of these cells. Here, we exploited the resolving power of single-cell RNA-sequencing to develop a computational model that is able to accurately distinguish SSPCs from differentiated cells across tissues...
October 16, 2017: Stem Cells
https://www.readbyqxmd.com/read/29044850/mesenchymal-stem-cells-therapy-a-promising-cell-based-therapy-for-treatment-of-myocardial-infraction
#2
REVIEW
Ayman El Sayed Shafei, Mahmoud Ahmed Ali, Hazem G Ghanem, Ahmed I Shehata, Ahmed A Abdelgawad, Hossam R Handal, Kareem A Talaat, Ahmed E Ashaal, Amal S El-Shal
AIM: For decades, mesenchymal stem (MSCs) cells had been used for cardiovascular diseases as regenerative therapy. This review is an attempt to summarize the types of MSCs involved in MI therapy, its possible mechanisms effects especially paracrine one in MI focusing on the studies (human and animal) conducted in the last 10 years. DISCUSSION: Recently, reports showed that MSC therapy could have infarct-limiting effects after myocardial infarction (MI) in both experimental and clinical trials...
October 16, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/29044473/induced-pluripotent-stem-cells-from-ovarian-tissue
#3
Sophia Salas, Nicholas Ng, Behzad Gerami-Naini, Raymond M Anchan
Yamanaka and colleagues revolutionized stem cell biology and regenerative medicine by observing that somatic cells can be reprogrammed into pluripotent stem cells. Evidence indicates that induced pluripotent stem (iPS) cells retain epigenetic memories that bias their spontaneous differentiation into the originating somatic cell type, therefore epigenetic memory may be exploited to improve tissue specific regeneration. We recently showed that iPS cells reprogrammed from ovarian granulosa cells using mouse and human tissue overwhelmingly differentiate homotypically into ovarian steroidogenic and primordial germ cells...
October 18, 2017: Current Protocols in Human Genetics
https://www.readbyqxmd.com/read/29039539/adenoviral%C3%A2-bone-morphogenetic-protein%C3%A2-7-and-or-doxazosin-therapies-promote-the-reversion-of-fibrosis-cirrhosis-in-a-cirrhotic-hamster-model
#4
Daniel Cervantes-Garcia, Adriana Guadalupe Cuellar-Juarez, Gissela Borrego-Soto, Augusto Rojas-Martinez, Liseth Rubi Aldaba-Muruato, Eva Salinas, Javier Ventura-Juarez, Martin Humberto Muñoz-Ortega
Liver fibrosis occurs in the presence of continuous insults, including toxic or biological agents. Novel treatments must focus on ceasing the progression of cellular damage, promoting the regeneration of the parenchyma and inhibition of the fibrotic process. The present study analyzed the effect of bone morphogenetic protein (BMP)‑7 gene therapy with or without co‑treatment with doxazosin in a model of liver cirrhosis in hamsters. The serum alanine aminotransferase, aspartate aminotransferase and albumin levels were analyzed spectrophotometrically...
October 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29038621/tweak-fn14-activation-participates-in-skin-inflammation
#5
REVIEW
Qilu Liu, Shengxiang Xiao, Yumin Xia
Tumor necrosis factor- (TNF-) like weak inducer of apoptosis (TWEAK) participates in multiple biological activities via binding to its sole receptor-fibroblast growth factor-inducible 14 (Fn14). The TWEAK/Fn14 signaling pathway is activated in skin inflammation and modulates the inflammatory responses of keratinocytes by activating nuclear factor-κB signals and enhancing the production of several cytokines, including interleukins, monocyte chemotactic protein-1, RANTES (regulated on activation, normal T cell expressed and secreted), and interferon gamma-induced protein 10...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29038476/pro-angiogenic-effect-of-rantes-loaded-polysaccharide-based-microparticles-for-a-mouse-ischemia-therapy
#6
N Suffee, C Le Visage, H Hlawaty, R Aid-Launais, V Vanneaux, J Larghero, O Haddad, O Oudar, N Charnaux, A Sutton
Peripheral arterial disease results from the chronic obstruction of arteries leading to critical hindlimb ischemia. The aim was to develop a new therapeutic strategy of revascularization by using biodegradable and biocompatible polysaccharides-based microparticles (MP) to treat the mouse hindlimb ischemia. For this purpose, we deliver the pro-angiogenic chemokine Regulated upon Activation, Normal T-cell Expressed and Secreted (RANTES)/CCL5 in the mouse ischemic hindlimb, in solution or incorporated into polysaccharide-based microparticles...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29038121/targeting-il-10-family-cytokines-for-the-treatment-of-human-diseases
#7
Xiaoting Wang, Kit Wong, Wenjun Ouyang, Sascha Rutz
Members of the interleukin (IL)-10 family of cytokines play important roles in regulating immune responses during host defense but also in autoimmune disorders, inflammatory diseases, and cancer. Although IL-10 itself primarily acts on leukocytes and has potent immunosuppressive functions, other family members preferentially target nonimmune compartments, such as tissue epithelial cells, where they elicit innate defense mechanisms to control viral, bacterial, and fungal infections, protect tissue integrity, and promote tissue repair and regeneration...
October 16, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/29037894/indentation-mapping-reveals-poroelastic-but-not-viscoelastic-properties-spanning-native-zonal-articular-cartilage
#8
Joseph A Wahlquist, Frank W DelRio, Mark A Randolph, Aaron H Aziz, Chelsea M Heveran, Stephanie J Bryant, Corey P Neu, Virginia L Ferguson
Osteoarthrosis is a debilitating disease affecting millions, yet engineering materials for cartilage regeneration has proven difficult because of the complex microstructure of this tissue. Articular cartilage, like many biological tissues, produces a time-dependent response to mechanical load that is critical to cell's physiological function in part due to solid and fluid phase interactions and property variations across multiple length scales. Recreating the time-dependent strain and fluid flow may be critical for successfully engineering replacement tissues but thus far has largely been neglected...
October 13, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29035303/optimization-of-bicomponent-electrospun-fibers-for-therapeutic-use-post-treatments-to-improve-chemical-and-biological-stability
#9
Antonio Papa, Vincenzo Guarino, Valentina Cirillo, Olimpia Oliviero, Luigi Ambrosio
Bicomponent electrospun nanofibers based on the combination of synthetic (i.e., aliphatic polyesters such as polycaprolactone (PCL)) and natural proteins (i.e., gelatin) have been extensively investigated as temporary platforms to instruct cells by the release of molecular/pharmaceutical signals for the regeneration of several tissues. Here, water soluble proteins (i.e., gelatin), strictly embedded to PCL, act as carriers of bioactive molecules, thus improving bioavailability and supporting cell activities during in vitro regeneration...
October 16, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29033393/new-bioactive-glass-scaffolds-with-exceptional-qualities-for-bone-tissue-regeneration-response-of-osteoblasts-and-osteoclasts
#10
Tia Kowal, Natalie C Hahn, Stephanie Eider, Jutta Marzillier, Daniella Marie Fodera, Ukrit Thamma, Himanshu Jain, Matthias M Falk
Tissue regeneration is a significantly improved alternative to tissue replacement by implants. It requires porous bioscaffolds for the restoration of natural tissue rather than relying on bio-inactive, often metallic implants. Recently, we developed technology for fabricating novel, nano-macroporous bioactive 'Tailored Amorphous Multi-Porous (TAMP)' hard tissue scaffolds using a 70 mol% SiO2-30 mol% CaO model composition. The TAMP silicate scaffolds, fabricated by a modified sol-gel process, have shown excellent biocompatibility via the rapid formation of hydroxyapatite in biological fluids as well as in early tests with bone forming cells...
October 16, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29031993/the-gdf5-mutant-bb-1-enhances-the-bone-formation-induced-by-an-injectable-plga-fiber-reinforced-brushite-forming-cement-in-a-sheep-defect-model-of-lumbar-osteopenia
#11
Francesca Gunnella, Elke Kunisch, Stefan Maenz, Victoria Horbert, Long Xin, Joerg Mika, Juliane Borowski, Sabine Bischoff, Harald Schubert, Andre Sachse, Bernhard Illerhaus, Jens Günster, Jörg Bossert, Klaus D Jandt, Frank Plöger, Raimund W Kinne, Olaf Brinkmann, Matthias Bungartz
BACKGROUND CONTEXT: Targeted delivery of osteoinductive bone morphogenetic proteins (BMPs; e.g., GDF5) in bioresorbable calcium phosphate cement (CPC), potentially suitable for vertebroplasty/kyphoplasty of osteoporotic vertebral fractures, may be required to counteract augmented local bone catabolism and support complete bone regeneration. The biologically optimized GDF5 mutant BB-1 may represent an attractive drug candidate for this purpose. PURPOSE: The aim of the current study was to test an injectable, poly (l-lactide-co-glycolide) acid (PLGA)-fiber reinforced, brushite-forming cement (CPC) containing low-dose BB-1 in a sheep lumbar osteopenia model...
October 12, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29031516/growth-of-adult-spinal-cord-in-knifefish-development-and-parametrization-of-a-distributed-model
#12
Iulian Ilieş, Rifat Sipahi, Günther K H Zupanc
The study of indeterminate-growing organisms such as teleost fish presents a unique opportunity for improving our understanding of central nervous tissue growth during adulthood. Integrating the existing experimental data associated with this process into a theoretical framework through mathematical or computational modeling provides further research avenues through sensitivity analysis and optimization. While this type of approach has been used extensively in investigations of tumor growth, wound healing, and bone regeneration, the development of nervous tissue has been rarely studied within a modeling framework...
October 12, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29030619/unwavering-pathobiology-of-volumetric-muscle-loss-injury
#13
Sarah M Greising, Jessica C Rivera, Stephen M Goldman, Alain Watts, Carlos A Aguilar, Benjamin T Corona
Volumetric muscle loss (VML) resulting from extremity trauma presents chronic and persistent functional deficits which ultimately manifest disability. Acellular biological scaffolds, or decellularized extracellular matrices (ECMs), embody an ideal treatment platform due to their current clinical use for soft tissue repair, off-the-shelf availability, and zero autogenous donor tissue burden. ECMs have been reported to promote functional skeletal muscle tissue remodeling in small and large animal models of VML injury, and this conclusion was reached in a recent clinical trial that enrolled 13 patients...
October 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29029043/degradation-of-the-recalcitrant-oil-spill-components-anthracene-and-pyrene-by-a-microbially-driven-fenton-reaction
#14
Ramanan Sekar, Thomas J DiChristina
Oil spill components include a range of toxic saturated, aromatic, and polar hydrocarbons, including pyrene and anthracene. Such contaminants harm natural ecosystems, adversely affect human health, and negatively impact tourism and the fishing industries. Current physical, chemical, and biological remediation technologies are often unable to completely remove recalcitrant oil spill components, which accumulate at levels greater than regulatory limits set by the EPA. In the present study, a microbially-driven Fenton reaction, previously shown to produce hydroxyl (HO) radicals that degrade chlorinated solvents and associated solvent stabilizers, was also found to degrade source zone concentrations of the oil spill components pyrene (10 μM) and anthracene (1 μM) at initial rates of 0...
September 25, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29026983/quartz-crystal-microbalance-as-an-assay-to-detect-anti-drug-antibodies-for-the-immunogenicity-assessment-of-therapeutic-biologics
#15
Evan A Dubiel, Tamás Fülöp, Sylvain Vigier, Patrick Vermette
Because of their biological origins, therapeutic biologics can trigger an unwanted deleterious immune response with some patients. The immunogenicity of therapeutic biologics can affect drug efficacy and patient safety by the production of circulating anti-drug antibodies (ADA). In this study, quartz crystal microbalance (QCM) was developed as an assay to detect ADA. Etanercept (Enbrel®) was covalently grafted to dextran-modified QCM surfaces. Rabbits were immunized with etanercept to generate ADA. Results showed the QCM assay could detect purified ADA from rabbits at concentrations as low as 50 ng/mL, within the sensitivity range of ELISA...
October 12, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29026781/bulge-region-as-a-putative-hair-follicle-stem-cells-niche-a-brief-review
#16
REVIEW
Sanaz Joulai Veijouye, Abazar Yari, Fatemeh Heidari, Nayereh Sajedi, Fatemeh Ghoroghi Moghani, Maliheh Nobakht
BACKGROUND: Hair follicle stem cells exist in different sites. Most of the hair follicle stem cells are reside in niche called bulge. Bulge region is located between the opening of sebaceous gland and the attachment site of the arrector pili muscle. METHODS: Data were collected using databases and resources of PubMed, Web of Science, Science Direct, Scopus, MEDLINE and their references from the earliest available published to identify English observational studies on hair follicle bulge region...
September 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/29025670/bone-regeneration-biomaterials-as-local-delivery-systems-with-improved-osteoinductive-properties
#17
REVIEW
Victor Martin, Ana Bettencourt
Bone is a mineralized conjunctive tissue, with a unique trauma healing capability. However, the replacement or regeneration of lost bone is not always successful and becomes more difficult the wider the bone defect. A significant growth in the demand for orthopedic and maxillofacial surgical procedures as a result of population aging and increase in chronic diseases as diabetes is a fact and successful approaches for bone regeneration are still needed. Until today, autogenous bone graft continues to be the best solution even with important limitations, as quantity and the requirement of a donator area...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29025644/polylactic-acid-based-porous-scaffolds-doped-with-calcium-silicate-and-dicalcium-phosphate-dihydrate-designed-for-biomedical-application
#18
Maria Giovanna Gandolfi, Fausto Zamparini, Micaela Degli Esposti, Federica Chiellini, Conrado Aparicio, Fabio Fava, Paola Fabbri, Paola Taddei, Carlo Prati
Polylactic acid (PLA), dicalcium phosphate dihydrate (DCPD) and/or hydraulic calcium silicate (CaSi) have been used to prepare highly-porous scaffolds by thermally induced phase separation technique (TIPS). Three experimental mineral-doped formulations were prepared (PLA-10CaSi, PLA-5CaSi-5DCPD, PLA-10CaSi-10DCPD). Pure PLA scaffolds constituted the control group. Scaffolds were tested for their chemical-physical and biological properties, namely calcium release, alkalinizing activity, surface microchemistry and micromorphology by ESEM, apatite-forming ability by EDX, micro-Raman and IR spectroscopy, thermal properties by differential scanning calorimetry, mechanical properties by quasi-static parallel-plates compression testing, porosity by a standard water-absorption method and direct-contact cytotoxicity...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/29025250/ceramic-polylactide-composite-material-used-in-a-model-of-healing-of-osseous-defects-in-rabbits
#19
Paweł Myciński, Joanna Zarzecka, Agnieszka Skórska-Stania, Agnieszka Jelonek, Krzysztof Okoń, Maria Wróbel
The growing demand for various kinds of bone regeneration material has in turn increased the desire to find materials with optimal physical, chemical, and biological properties. The objective of the present study was to identify the proportions of ceramic and polylactide components in a bone substitute material prepared in collaboration with the Crystal Chemistry of Drugs Team of the Faculty of Chemistry at the Jagiellonian University, which would be optimal for bone regeneration processes. Another goal was to provide a histological analysis of the influence of a ceramic-polylactide composite on the healing of osseous defects in rabbits...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/29024986/stromal-fibroblasts-from-perimenopausal-endometrium-exhibit-a-different-transcriptome-than-those-from-the-premenopausal-endometrium
#20
David W Erikson, Fatima Barragan, Terhi T Piltonen, Joseph C Chen, Shaina Balayan, Juan C Irwin, Linda C Giudice
Human endometrium undergoes extensive regeneration on a cyclic basis in premenopausal women and likely occurs through the contribution of stem/progenitor cells. Menopause results in the permanent cessation of menstrual cycles and is preceded by perimenopause, a period of several years in which endocrine and biological changes occur and is a period of risk for endometrial proliferative disorders. The objectives of this study were to identify mesenchymal stem cells (eMSC) and stromal fibroblasts (eSF) in endometrium of perimenopausal women and perform expression profile analysis of perimenopausal eMSC and eSF to gain insight into the biology of stem/progenitor and lineage cell populations during the transition to menopause...
August 19, 2017: Biology of Reproduction
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