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https://www.readbyqxmd.com/read/27888602/a-glycovariant-of-human-cd44-is-characteristically-expressed-on-human-mesenchymal-stem-cells
#1
Gisela Pachón-Peña, Conor Donnelly, Catalina Ruiz-Cañada, Adam Katz, Sonia Fernández-Veledo, Joan Vendrell, Robert Sackstein
The clinical effectiveness of systemically-administered human mesenchymal stem cells (hMSCs) depends on their capacity to engage vascular endothelium. hMSCs derived from bone marrow (BM-hMSCs) natively lack endothelial binding capacity but express a CD44 glycovariant containing N-linked sialyllactosamines that can be α(1,3)-fucosylated using fucosyltransferase- VI (FTVI) to enforce sLe(X) decorations, thereby creating hematopoietic cell E-/L-selectin ligand (HCELL). HCELL expression programs potent shear-resistant adhesion of circulating cells to endothelial beds expressing E-selectin...
November 26, 2016: Stem Cells
https://www.readbyqxmd.com/read/27883074/adipose-stem-cells-display-higher-regenerative-capacities-and-more-adaptable-electro-kinetic-properties-compared-to-bone-marrow-derived-mesenchymal-stromal-cells
#2
Ahmed El-Badawy, Marwa Amer, Reda Abdelbaset, Sameh N Sherif, Marwan Abo-Elela, Yehya H Ghallab, Hamdy Abdelhamid, Yehea Ismail, Nagwa El-Badri
Adipose stem cells (ASCs) have recently emerged as a more viable source for clinical applications, compared to bone-marrow mesenchymal stromal cells (BM-MSCs) because of their abundance and easy access. In this study we evaluated the regenerative potency of ASCs compared to BM-MSCs. Furthermore, we compared the dielectric and electro-kinetic properties of both types of cells using a novel Dielectrophoresis (DEP) microfluidic platform based on a printed circuit board (PCB) technology. Our data show that ASCs were more effective than BM-MSCs in promoting neovascularization in an animal model of hind-limb ischemia...
November 24, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27882169/efficacy-of-mesenchymal-stem-cells-in-treating-patients-with-osteoarthritis-of-the-knee-a-meta-analysis
#3
Gang-Hua Cui, Yang Yang Wang, Chang-Jun Li, Chen-Hui Shi, Wei-Shan Wang
To assess the clinical efficacy and safety of mesenchymal stem cell (MSC) treatment for osteoarthritis of the knee (KOA), a systematic electronic literature search was performed on PubMed, EMBASE and Web of Science. Studies published in English from the earliest record to December 2014 were searched using the following keywords: Cartilage defect, cartilage repair, osteoarthritis, KOA, stem cells, MSCs, bone marrow concentrate (BMC), adipose-derived mesenchymal stem cells, synovial-derived mesenchymal stem cells and peripheral blood-derived mesenchymal stem cells...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27881051/mechanisms-of-immune-suppression-utilized-by-canine-adipose-and-bone-marrow-derived-mesenchymal-stem-cells
#4
Lyndah Chow, Valerie Johnson, Jonathan W Coy, Daniel P Regan, Steven W Dow
Mesenchymal stem cells (MSC) from rodents and humans have been shown to suppress T cells by distinct primary pathways, with NO-dependent pathways dominating in rodents and IDO-dependent pathways dominating in humans. However, the immune suppressive pathways utilized by canine MSC have not been as thoroughly studied, nor have BM-MSC and Ad-MSC been directly compared for their immune modulatory potency or pathway utilization. Therefore, canine BM-MSC and Ad-MSC were generated in vitro and their potency in suppressing T cell proliferation and cytokine production was compared, as well as differential gene expression...
November 23, 2016: Stem Cells and Development
https://www.readbyqxmd.com/read/27872012/biomimetic-collagen-elastin-meshes-for-ventral-hernia-repair-in-a-rat-model
#5
Silvia Minardi, Francesca Taraballi, Xin Wang, Fernando J Cabrera, Jeffrey L Van Eps, Andrew B Robbins, Monica Sandri, Michael R Moreno, Bradley K Weiner, Ennio Tasciotti
: Ventral hernia repair remains a major clinical need. Herein, we formulated a type I collagen/elastin crosslinked blend (CollE) for the fabrication of biomimetic meshes for ventral hernia repair. To evaluate the effect of architecture on the performance of the implants, CollE was formulated both as flat sheets (CollE Sheets) and porous scaffolds (CollE Scaffolds). The morphology, hydrophylicity and in vitro degradation were assessed by SEM, water contact angle and differential scanning calorimetry, respectively...
November 18, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27871958/current-perspectives-on-stem-cell-therapy-for-erectile-dysfunction
#6
REVIEW
Taylor C Peak, James Anaissie, Wayne J G Hellstrom
INTRODUCTION: Erectile dysfunction (ED) is a common sexual disorder that affects the lives of millions of male patients and their partners. Various medical and surgical therapies exist, with the most common being oral intake of phosphodiesterase 5 inhibitors. One therapeutic strategy in preclinical development to treat ED is stem cell transplantation. AIM: To examine the studies that have investigated stem cells for the treatment of ED. METHODS: A literature review was performed through PubMed focusing on stem cells and ED...
July 2016: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/27871224/insights-into-the-human-mesenchymal-stromal-stem-cell-identity-through-integrative-transcriptomic-profiling
#7
Beatriz Roson-Burgo, Fermin Sanchez-Guijo, Consuelo Del Cañizo, Javier De Las Rivas
BACKGROUND: Mesenchymal Stromal/Stem Cells (MSCs), isolated under the criteria established by the ISCT, still have a poorly characterized phenotype that is difficult to distinguish from similar cell populations. Although the field of transcriptomics and functional genomics has quickly grown in the last decade, a deep comparative analysis of human MSCs expression profiles in a meaningful cellular context has not been yet performed. There is also a need to find a well-defined MSCs gene-signature because many recent biomedical studies show that key cellular interaction processes (i...
November 21, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27862947/osteogenic-potential-of-stem-cells-seeded-bioactive-nanocomposite-scaffolds-a-comparative-study-between-human-mesenchymal-stem-cells-derived-from-bone-umbilical-cord-wharton-s-jelly-and-adipose-tissue
#8
Saeid Kargozar, Masoud Mozafari, Seyed Jafar Hashemian, Peiman Brouki Milan, Sepideh Hamzehlou, Mansooreh Soleimani, Mohammad Taghi Joghataei, Mazaher Gholipourmalekabadi, Alireza Korourian, Kazem Mousavizadeh, Alexander M Seifalian
Bone regeneration is considered as an unmet clinical need, the aim of this study is to investigate the osteogenic potential of three different mesenchymal stem cells (MSCs) derived from human bone marrow (BM-MSCs), umbilical cord Wharton's jelly (UC-MSCs), and adipose (AD-MSCs) seeded on a recently developed nanocomposite scaffold (bioactive glass/gelatin) implanted in rat animal models with critical size calvarial defects. In this study, after isolation, culture, and characterization, the MSCs were expanded and seeded on the scaffolds for in vitro and in vivo studies...
November 15, 2016: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/27861655/comparative-study-between-mesenchymal-stem-cells-derived-from-bone-marrow-and-from-adipose-tissue-associated-with-xenograft-in-appositional-reconstructions-histomorphometric-study-in-rabbit-calvaria
#9
Andrea Baptista Coelho de Faria, Fernando Biolcati Chiantia, Marcelo Lucchesi Teixeira, Antonio Carlos Aloise, André Antonio Pelegrine
PURPOSE: This study analyzed the use of bone marrow-derived mesenchymal stem cells and adipose tissue-derived stem cells, associated with xenograft, in appositional reconstructions in rabbit calvaria using histomorphometry. MATERIALS AND METHODS: Fifteen New Zealand rabbits, weighing 3.5 to 4.0 kg and aged between 10 and 12 months, were randomly divided into three groups. Appositional bone reconstruction situations were created in the calvaria of the animals using titanium cylinders, fitted with titanium occlusive caps...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27855539/mouse-p2y4-nucleotide-receptor-is-a-negative-regulator-of-cardiac-adipose-derived-stem-cell-differentiation-and-cardiac-fat-formation
#10
Anne Lemaire, Marion Vanorlé, Michael Horckmans, Larissa di Pietrantonio, Sophie Clouet, Bernard Robaye, Jean-Marie Boeynaems, Didier Communi
Cardiac adipose-derived stem cells (cASCs) have the ability to differentiate into multiple cell lineages giving them a high potential for use in regenerative medicine. Cardiac fat tissue still raises many unsolved questions related to its formation and features. P2Y nucleotide receptors have already been described as regulators of differentiation of bone-marrow derived stem cells but remain poorly investigated in cASCs. We defined here the P2Y4 nucleotide receptor as a negative regulator of cardiac fat formation and cASC differentiation...
November 17, 2016: Stem Cells and Development
https://www.readbyqxmd.com/read/27837561/banking-of-adipose-and-cord-tissue-derived-stem-cells-technical-and-regulatory-issues
#11
David T Harris
Stem cells are found in all multicellular organisms and are defined as cells that can differentiate into specialized mature cells as well as divide to produce more stem cells. Mesenchymal stem cells (MSC) were among the first stem cell types to be utilized for regenerative medicine. Although initially isolated from bone marrow, based on ease and costs of procurement, MSC derived from adipose tissue (AT-MSC) and umbilical cord tissue (CT-MSC) are now preferred stem cell sources for these applications. Both adipose tissues and cord tissue present unique problems for biobanking however, in that these are whole tissues, not cellular suspensions...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27832825/heterogeneity-of-proangiogenic-features-in-mesenchymal-stem-cells-derived-from-bone-marrow-adipose-tissue-umbilical-cord-and-placenta
#12
Wen Jing Du, Ying Chi, Zhou Xin Yang, Zong Jin Li, Jun Jie Cui, Bao Quan Song, Xue Li, Shao Guang Yang, Zhi Bo Han, Zhong Chao Han
BACKGROUND: Mesenchymal stem cells (MSCs) have been widely proven effective for therapeutic angiogenesis in ischemia animal models as well as clinical vascular diseases. Because of the invasive method, limited resources, and aging problems of adult tissue-derived MSCs, more perinatal tissue-derived MSCs have been isolated and studied as promising substitutable MSCs for cell transplantation. However, fewer studies have comparatively studied the angiogenic efficacy of MSCs derived from different tissues sources...
November 10, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27822338/stem-cell-therapy-for-the-treatment-of-leydig-cell-dysfunction-in-primary-hypogonadism
#13
REVIEW
Taylor C Peak, Nora M Haney, William Wang, Kenneth J DeLay, Wayne J Hellstrom
The production of testosterone occurs within the Leydig cells of the testes. When production fails at this level from either congenital, acquired, or systemic disorders, the result is primary hypogonadism. While numerous testosterone formulations have been developed, none are yet fully capable of replicating the physiological patterns of testosterone secretion. Multiple stem cell therapies to restore androgenic function of the testes are under investigation. Leydig cells derived from bone marrow, adipose tissue, umbilical cord, and the testes have shown promise for future therapy for primary hypogonadism...
October 26, 2016: World Journal of Stem Cells
https://www.readbyqxmd.com/read/27791997/stem-cells-and-vascular-regenerative-medicine
#14
J-F Stoltz, D Bensoussan, N De Isla, L Zhang, Z Han, J Magdalou, C Huselstein, J S Ye, N Li, V Decot, L Reppel
Most human tissues do not regenerate spontaneously, which is why "cell therapy" are promising alternative treatments. The Principe is simple: patients' or donors' cells are collected and introduced into the injured tissues or organs directly or in a porous 3D material, with or without modification of their properties. This concept of regenerative medicine is an emerging field which can be defined as "the way to improve health and quality of life by restoring, maintaining, or enhancing tissue and organ functions"...
October 27, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27777108/conditional-tenomodulin-overexpression-favors-tenogenic-lineage-differentiation-of-transgenic-mouse-derived-cells
#15
Yuan Shi, Yao Xiong, Yongkang Jiang, Zhiyong Zhang, Guangdong Zhou, Wenjie Zhang, Yilin Cao, Jing He, Wei Liu
Tenomodulin (TNMD) is a type II transmembrane protein that is widely expressed in a variety of avascular connective tissues and fat tissue. Its function remains largely unknown except for a marker for mature tenocytes. This study reports the generation of tetracycline (Tet)-on driven conditional TNMD overexpressing mice and thus to provide a tool for systemic investigation of its role in regulating functions of various tissues. The current study focuses on in vitro comparison of tenogenic differentiation potentials induced by doxycycline (Dox) treatment among bone marrow derived stem cells (BMSCs), adipose derived stem cells (ASCs), dermal fibroblasts (DFs) and tenocytes (TCs) of the same transgenic mice...
October 21, 2016: Gene
https://www.readbyqxmd.com/read/27757329/mechanical-stimulation-increases-knee-meniscus-gene-rna-level-expression-in-adipose-derived-stromal-cells
#16
Elizabeth M Meier, Bin Wu, Aamir Siddiqui, Donna G Tepper, Michael T Longaker, Mai T Lam
: Efforts have been made to engineer knee meniscus tissue for injury repair, yet most attempts have been unsuccessful. Creating a cell source that resembles the complex, heterogeneous phenotype of the meniscus cell remains difficult. Stem cell differentiation has been investigated, mainly using bone marrow mesenchymal cells and biochemical means for differentiation, resulting in no solution. Mechanical stimulation has been investigated to an extent with no conclusion. Here, we explore the potential for and effectiveness of mechanical stimulation to induce the meniscal phenotype in adipose-derived stromal cells...
September 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27754275/sy-18-1-translational-research-in-pah
#17
Wook-Jin Chung
Pulmonary arterial hypertension (PAH) is a life-threatening disorder with a poor prognosis and causes pulmonary vascular remodeling accompanied with increased pulmonary arterial medial wall thickness and fibrosis, which leads to vascular and right ventricular (RV) dysfunction. Despite treatment with prostacyclin, endothelin antagonist, and phosphodiesterase-5 inhibitors the 1-year mortality rate of PAH still remains high. Recent registries, clinical trials, and basic researches have been increasing the knowledge of PAH and it would contribute to potential therapeutic strategies and better clinical outcome...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27741556/porous-3d-implants-of-degradable-poly-3-hydroxybutyrate-used-to-enhance-regeneration-of-rat-cranial-defect
#18
A A Shumilova, M P Myltygashev, A K Kirichenko, E D Nikolaeva, T G Volova, E I Shishatskaya
The study describes preparation and testing of porous 3D implants of natural degradable polymer of 3-hydroxybutyric acid P(3HB) for regeneration of bone tissue defects. The ability of the P(3HB) implants to favor attachment and facilitate proliferation and directed differentiation of mesenchymal stem cells (MSCs) was studied in the culture of MSCs isolated from bone marrow and adipose tissue. Tissue-engineered hybrid systems (grafts) constructed by using P(3HB) and P(3HB) in combination with osteoblasts were used in experiments on laboratory animals (n=48) with bone defect model...
October 14, 2016: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/27739057/increased-chondrogenic-potential-of-mesenchymal-cells-from-adipose-tissue-versus-bone-marrow-derived-cells-in-osteoarthritic-in-vitro-models
#19
Stefania Pagani, Veronica Borsari, Francesca Veronesi, Andrea Ferrari, Simona Cepollaro, Paola Torricelli, Giuseppe Filardo, Milena Fini
OBJECTIVES: Primarily, to compare the behavior of human mesenchymal stem cells (MSCs) derived from bone marrow (hBMSCs) and adipose tissue (hADSCs) in an osteoarthritic (OA) microenvironment; secondly, to investigate the reaction of these cell types in two alternative in vitro culture systems, obtained by using TNFα and/or IL1β as inflammation mediators, or by using synovial fluid harvested by OA patients (OSF) to simulate the complex inflamed knee microenvironment. METHODS: 3D micromass cultures of hBMSCs or hADSCs were grown in chondrogenic medium (CTR), in the presence of TNFα and/or IL1β, or synovial fluid from OA patients...
October 14, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27737733/conditioned-medium-of-periodontal-ligament-mesenchymal-stem-cells-exert-anti-inflammatory-effects-in-lipopolysaccharide-activated-mouse-motoneurons
#20
Thangavelu Soundara Rajan, Sabrina Giacoppo, Oriana Trubiani, Francesca Diomede, Adriano Piattelli, Placido Bramanti, Emanuela Mazzon
Conditioned medium derived from mesenchymal stem cells (MSCs) shows immunomodulatory and neuroprotective effects in preclinical models. Given the difficulty to harvest MSCs from bone marrow and adipose tissues, research has been focused to find alternative resources for MSCs, such as oral-derived tissues. Recently, we have demonstrated the protective effects of MSCs obtained from healthy human periodontal ligament tissue (hPDLSCs) in murine experimental autoimmune encephalomyelitis model. In the present in vitro study, we have investigated the immunomodulatory and neuroprotective effects of conditioned medium obtained from hPDLSCs of Relapsing Remitting- Multiple sclerosis (RR-MS) patients on NSC34 mouse motoneurons stimulated with lipopolysaccharide (LPS)...
October 11, 2016: Experimental Cell Research
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