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https://www.readbyqxmd.com/read/27926994/microvessels-of-the-heart-formation-regeneration-and-dysfunction
#1
Ioakim Spyridopoulos, Helen M Arthur
This issue of Microcirculation focusses on the special topic of "microvessels of the heart" and contains five state-of-the-art reviews and one expert article that reflect current efforts to address the major gaps in our understanding of these key microvessels. In the adult heart, most attention until recently (especially among the clinical cardiology community) has been given to the main coronary arteries, which are the culprit vessels in patients with coronary artery disease, including its most serious manifestation, acute myocardial infarction (MI)...
December 7, 2016: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/27926864/low-cd38-identifies-progenitor-like-inflammation-associated-luminal-cells-that-can-initiate-human-prostate-cancer-and-predict-poor-outcome
#2
Xian Liu, Tristan R Grogan, Haley Hieronymus, Takao Hashimoto, Jack Mottahedeh, Donghui Cheng, Lijun Zhang, Kevin Huang, Tanya Stoyanova, Jung Wook Park, Ruzanna O Shkhyan, Behdokht Nowroozizadeh, Matthew B Rettig, Charles L Sawyers, David Elashoff, Steve Horvath, Jiaoti Huang, Owen N Witte, Andrew S Goldstein
Inflammation is a risk factor for prostate cancer, but the mechanisms by which inflammation increases that risk are poorly understood. Here, we demonstrate that low expression of CD38 identifies a progenitor-like subset of luminal cells in the human prostate. CD38(lo) luminal cells are enriched in glands adjacent to inflammatory cells and exhibit epithelial nuclear factor κB (NF-κB) signaling. In response to oncogenic transformation, CD38(lo) luminal cells can initiate human prostate cancer in an in vivo tissue-regeneration assay...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27926753/in-vivo-observation-of-lens-regeneration-in-rat-using-ultra-long-scan-depth-optical-coherence-tomography
#3
Kai-Jing Zhou, Yi-Ni Li, Fu-Rong Huang, Qin-Mei Wang, A-Yong Yu
Purpose: To evaluate morphologic changes of lens regeneration in rats in vivo after extracapsular lens extraction (ECLE) by ultra-long scan depth optical coherence tomography (UL-OCT). Methods: A total of 42 Sprague-Dawley rats were used in this study. We performed ECLE on the right eyes of animals in the surgery group (n = 34). Biomicroscopy and UL-OCT scans were carried out for the surgery group immediately (within 1 hour postoperatively) and at days 1 and 3, weeks 1 and 2, and months 1, 2, and 3 postoperatively...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27925505/prioritizing-studies-on-regeneration-in-nontraditional-model-organisms
#4
Benjamin L King, Viravuth P Yin
No abstract text is available yet for this article.
December 7, 2016: Regenerative Medicine
https://www.readbyqxmd.com/read/27925365/regenerative-electroless-etching-of-silicon
#5
Kurt W Kolasinski, Nathan J Gimbar, Haibo Yu, Mark Aindow, Ermei Mäkilä, Jarno Salonen
Regenerative electroless etching (ReEtching), described herein for the first time, is a method of producing nanostructured semiconductors in which an oxidant (Ox1 ) is used as a catalytic agent to facilitate the reaction between a semiconductor and a second oxidant (Ox2 ) that would be unreactive in the primary reaction. Ox2 is used to regenerate Ox1 , which is capable of initiating etching by injecting holes into the semiconductor valence band. Therefore, the extent of reaction is controlled by the amount of Ox2 added, and the rate of reaction is controlled by the injection rate of Ox2 ...
December 7, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27925343/transplantation-of-thy1-cells-accelerates-liver-regeneration-by-enhancing-the-growth-of-small-hepatocyte-like-progenitor-cells-via-il17rb-signaling
#6
Norihisa Ichinohe, Masayuki Ishii, Naoki Tanimizu, Junko Kon, Yusuke Yoshioka, Takahiro Ochiya, Toru Mizuguchi, Koichi Hirata, Toshihiro Mitaka
Small hepatocyte-like progenitor cells (SHPCs) transiently form clusters in rat livers treated with retrorsine (Ret)/70% partial hepatectomy (PH). When Thy1(+) cells isolated from d-galactosamine-treated rat livers were transplanted into the livers of Ret/PH-treated rats, the mass of the recipient liver transiently increased during the first 30 days after transplantation, suggesting that liver regeneration was enhanced. Here we addressed how Thy1(+) cell transplantation stimulates liver regeneration. We found that the number and size of SHPC clusters increased in the liver at 14 days after transplantation...
December 7, 2016: Stem Cells
https://www.readbyqxmd.com/read/27925305/extracellular-matrix-in-epitheliochorial-endotheliochorial-and-haemochorial-placentation-and-its-potential-application-for-regenerative-medicine
#7
REVIEW
Ara da Anunciação, A M Mess, D Orechio, B A Aguiar, P O Favaron, M A Miglino
A placenta is defined as structural approximation of maternal and foetal tissues to perform physiological exchange. Associated processes of differentiation and the establishment of its cells take place within the extracellular matrix (ECM) that provides a rich environment of collagens, fibronectins, cytokines and other components. Placental ECM is promising for tissue regeneration purposes, because it has immune tolerance capacities that may cause only minimal rejections of transplants with immunological differences between donor and recipient...
December 7, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27925229/plga-ptmc-cultured-bone-mesenchymal-stem-cell-scaffold-enhances-cartilage-regeneration-in-tissue-engineered-tracheal-transplantation
#8
Bingyang Yan, Zhipei Zhang, Xiaoping Wang, Yunfeng Ni, Yongshi Liu, Tao Liu, Wuping Wang, Hao Xing, Ying Sun, Jian Wang, Xiao-Fei Li
The treatment of long-segment tracheal defect requires the transplantation of effective tracheal substitute, and the tissue-engineered trachea (TET) has been proposed as an ideal tracheal substitute. The major cause of the failure of segmental tracheal defect reconstruction by TET is airway collapse caused by the chondromalacia of TET cartilage. The key to maintain the TET structure is the regeneration of chondrocytes in cartilage, which can secrete plenty of cartilage matrices. To address the problem of the chondromalacia of TET cartilage, this study proposed an improved strategy...
December 7, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27925208/extracellular-hsp70-enhances-mesoangioblast-migration-via-an-autocrine-signaling-pathway
#9
Maria M Barreca, Walter Spinello, Vincenzo Cavalieri, Giuseppina Turturici, Gabriella Sconzo, Punit Kaur, Rosaria Tinnirello, Alexzander A A Asea, Fabiana Geraci
Mouse mesoangioblasts are vessel-associated progenitor stem cells endowed with the ability of multipotent mesoderm differentiation. Therefore, they represent a promising tool in the regeneration of injured tissues. Several studies have demonstrated that homing of mesoangioblasts into blood and injured tissues are mainly controlled by cytokines/chemokines and other inflammatory factors. However, little is known about the molecular mechanisms regulating their ability to traverse the extracellular matrix (ECM)...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27924854/cell-studies-of-hybridized-carbon-nanofibers-containing-bioactive-glass-nanoparticles-using-bone-mesenchymal-stromal-cells
#10
Xiu-Rui Zhang, Xiao-Qing Hu, Xiao-Long Jia, Li-Ka Yang, Qing-Yang Meng, Yuan-Yuan Shi, Zheng-Zheng Zhang, Qing Cai, Yin-Fang Ao, Xiao-Ping Yang
Bone regeneration required suitable scaffolding materials to support the proliferation and osteogenic differentiation of bone-related cells. In this study, a kind of hybridized nanofibrous scaffold material (CNF/BG) was prepared by incorporating bioactive glass (BG) nanoparticles into carbon nanofibers (CNF) via the combination of BG sol-gel and polyacrylonitrile (PAN) electrospinning, followed by carbonization. Three types (49 s, 68 s and 86 s) of BG nanoparticles were incorporated. To understand the mechanism of CNF/BG hybrids exerting osteogenic effects, bone marrow mesenchymal stromal cells (BMSCs) were cultured directly on these hybrids (contact culture) or cultured in transwell chambers in the presence of these materials (non-contact culture)...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924830/impaired-regenerative-capacity-and-lower-revertant-fibre-expansion-in-dystrophin-deficient-mdx-muscles-on-dba-2-background
#11
Merryl Rodrigues, Yusuke Echigoya, Rika Maruyama, Kenji Rowel Q Lim, So-Ichiro Fukada, Toshifumi Yokota
Duchenne muscular dystrophy, one of the most common lethal genetic disorders, is caused by mutations in the DMD gene and a lack of dystrophin protein. In most DMD patients and animal models, sporadic dystrophin-positive muscle fibres, called revertant fibres (RFs), are observed in otherwise dystrophin-negative backgrounds. RFs are thought to arise from skeletal muscle precursor cells and clonally expand with age due to the frequent regeneration of necrotic fibres. Here we examined the effects of genetic background on muscle regeneration and RF expansion by comparing dystrophin-deficient mdx mice on the C57BL/6 background (mdx-B6) with those on the DBA/2 background (mdx-DBA), which have a more severe phenotype...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924818/an-ultra-tunable-platform-for-molecular-engineering-of-high-performance-crystalline-porous-materials
#12
Quan-Guo Zhai, Xianhui Bu, Chengyu Mao, Xiang Zhao, Luke Daemen, Yongqiang Cheng, Anibal J Ramirez-Cuesta, Pingyun Feng
Metal-organic frameworks are a class of crystalline porous materials with potential applications in catalysis, gas separation and storage, and so on. Of great importance is the development of innovative synthetic strategies to optimize porosity, composition and functionality to target specific applications. Here we show a platform for the development of metal-organic materials and control of their gas sorption properties. This platform can accommodate a large variety of organic ligands and homo- or hetero-metallic clusters, which allows for extraordinary tunability in gas sorption properties...
December 7, 2016: Nature Communications
https://www.readbyqxmd.com/read/27924617/cxcl12-sdf-1-dependent-retinal-migration-of-endogenous-bone-marrow-derived-stem-cells-improves-visual-function-after-pharmacologically-induced-retinal-degeneration
#13
Volker Enzmann, Stéphanie Lecaudé, Anna Kruschinski, Axel Vater
Mobilized bone marrow-derived stem cells (BMSC) have been discussed as an alternative strategy for endogenous repair. Thereby, different approaches for BMSC mobilization have been pursued. Herein, the role of a newly discovered oligonucleotide for retinal homing and regeneration capability of BMSCs was investigated in the sodium iodate (NaIO3) model of retinal degeneration. Mobilization was achieved in GFP-chimera with NOX-A12, a CXC-motif chemokine ligand 12 (CXCL12)/stromal cell-derived factor 1 (SDF-1)-neutralizing L-aptamer...
December 6, 2016: Stem Cell Reviews
https://www.readbyqxmd.com/read/27924614/gdf11-treatment-attenuates-the-recovery-of-skeletal-muscle-function-after-injury-in-older-rats
#14
Yu Zhou, Neel Sharma, David Dukes, Maria B Myzithras, Priyanka Gupta, Ashraf Khalil, Julius Kahn, Jennifer S Ahlberg, David B Hayes, Michael Franti, Tracy Criswell
Loss of skeletal muscle mass and function results in loss of mobility for elderly patients. Novel therapies that can protect and/or restore muscle function during aging would have profound effects on the quality of life for this population. Growth differentiation factor 11 (GDF11) has been proposed as a "youthful" circulating factor that can restore cardiac, neural, and skeletal muscle functions in aging animals. However, conflicting data has been recently published that casts doubt on these assertions. We used a complex rat model of skeletal muscle injury that physiologically mimics injuries seen in patients; to investigate the ability of GDF11 and to enhance skeletal muscle regeneration after injury in older rats...
December 6, 2016: AAPS Journal
https://www.readbyqxmd.com/read/27924607/fabrication-and-characterization-of-decellularized-periodontal-ligament-cell-sheet-constructs
#15
Amro Farag, Cédryck Vaquette, Dietmar W Hutmacher, P Mark Bartold, Saso Ivanovski
Decellularized tissue-engineered constructs have the potential to promote regeneration by providing a biomimetic extracellular matrix that directs tissue-specific regeneration when implanted in situ. Recently, the use of cell sheets has shown promising results in promoting periodontal regeneration. Here, we describe the fabrication of decellularized periodontal cell sheets with intact extracellular matrix structural and biological properties. Melt electro spun polycaprolactone (PCL) scaffolds are used as a carrier for the inherently fragile cell sheets, to provide support during the processes of decellularization...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924577/analyzing-perk-activation-during-planarian-regeneration
#16
Susanna Fraguas, Yoshihiko Umesono, Kiyokazu Agata, Francesc Cebrià
Planarians are an ideal model in which to study stem cell-based regeneration. After amputation, planarian pluripotent stem cells surrounding the wound proliferate to produce the regenerative blastema, in which they differentiate into the missing tissues and structures. Recent independent studies in planarians have shown that Smed-egfr-3, a gene encoding a homologue of epidermal growth factor (EGF) receptors, and DjerkA, which encodes an extracellular signal-regulated kinase (ERK), may control cell differentiation and blastema growth...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924447/associations-between-polymorphisms-in-the-nicd-domain-of-bovine-notch1-gene-and-growth-traits-in-chinese-qinchuan-cattle
#17
Mei Liu, Chenge Zhang, Xinsheng Lai, Jing Xue, Xianyong Lan, Chuzhao Lei, Yutang Jia, Hong Chen
NOTCH1 is one of the four mammalian Notch receptors, which is involved in the Notch signaling pathway. Specifically, NOTCH1 promotes the proliferation of myogenic precursor cells, and the NICD domain of NOTCH1 can impair regeneration of skeletal muscles. However, similar research on the bovine NOTCH1 gene is lacking. In this study, we detected the polymorphisms of the bovine NOTCH1 gene in a total of 448 individuals from Chinese Qinchuan cattle with DNA pooling, forced PCR-RFLP, and DNA sequencing methods. Five novel SNPs were identified within the NICD domain, and eight haplotypes comprising combinations of these five SNPs were studied as well...
December 6, 2016: Journal of Applied Genetics
https://www.readbyqxmd.com/read/27924424/rgta-%C3%A2-or-regenerating-agents-mimic-heparan-sulfate-in-regenerative-medicine-from-concept-to-curing-patients
#18
REVIEW
Denis Barritault, Marie Gilbert-Sirieix, Kim Lee Rice, Fernando Siñeriz, Dulce Papy-Garcia, Christophe Baudouin, Pascal Desgranges, Gilbert Zakine, Jean-Louis Saffar, Johan van Neck
The importance of extracellular matrix (ECM) integrity in maintaining normal tissue function is highlighted by numerous pathologies and situations of acute and chronic injury associated with dysregulation or destruction of ECM components. Heparan sulfate (HS) is a key component of the ECM, where it fulfils important functions associated with tissue homeostasis. Its degradation following tissue injury disrupts this delicate equilibrium and may impair the wound healing process. ReGeneraTing Agents (RGTA(®)s) are polysaccharides specifically designed to replace degraded HS in injured tissues...
December 7, 2016: Glycoconjugate Journal
https://www.readbyqxmd.com/read/27924221/targeting-mll1-h3k4-methyltransferase-activity-to-guide-cardiac-lineage-specific-reprogramming-of-fibroblasts
#19
Liu Liu, Ienglam Lei, Hacer Karatas, Yangbing Li, Li Wang, Leonid Gnatovskiy, Yali Dou, Shaomeng Wang, Li Qian, Zhong Wang
Generation of induced cardiomyocytes (iCMs) directly from fibroblasts offers a great opportunity for cardiac disease modeling and cardiac regeneration. A major challenge of iCM generation is the low conversion rate. To address this issue, we attempted to identify small molecules that could potentiate the reprogramming ability towards cardiac fate by removing inhibitory roadblocks. Using mouse embryonic fibroblasts as the starting cell source, we first screened 47 cardiac development related epigenetic and transcription factors, and identified an unexpected role of H3K4 methyltransferase Mll1 and related factor Men1 in inhibiting iCM reprogramming...
2016: Cell Discovery
https://www.readbyqxmd.com/read/27924203/the-effects-of-etomidate-and-midazolam-on-adipose-tissue-derived-mesenchymal-stem-cell-proliferation
#20
Ho Park, Kyoungho Ryu, Yun-Hong Kim, Won-Jun Choi, Dongchan Ko
BACKGROUND: Stem cell therapy using adipose tissue-derived mesenchymal stem cells (ADSCs), which are capable of multipotent differentiation, is currently being investigated in the field of tissue regeneration and the treatment of patients in intensive care units. It is known that type-A γ-aminobutyric acid (GABAA) receptor activity has an influence on stem cell proliferation. Thus, we investigated the effects of the clinically available GABAA receptor agonists, etomidate and midazolam, on ADSC proliferation measured by the cell counting kit-8 assay...
December 2016: Korean Journal of Anesthesiology
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