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| Registros recuperados: 20 | |
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| Feng,D.Q.; Zhou,Y.; Ling,B.; Gao,T.; Shi,Y.Y.; Wei,H.M.; Tian,Z.G.. |
| Mesenchymal stem cells (MSCs) have been reported to secrete a variety of cytokines and growth factors acting as trophic suppliers, but little is known regarding the effects of conditioned medium (CM) of MSCs isolated from femurs and tibias of mouse on the artificial activation of mouse oocytes and on the developmental competence of the parthenotes. In the current study, we investigated the effect of CM on the events of mouse oocyte activation, namely oscillations of cytosolic calcium concentration ([Ca²+]i), meiosis resumption, pronucleus formation, and parthenogenetic development. The surface markers of MSCs were identified with a fluorescence-activated cell sorter. The dynamic changes of the spindle and formation of pronuclei were examined by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mesenchymal stem cells; Oocyte activation; Parthenogenesis; Calcium; Cytochalasin B. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000600006 |
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| Cassaro,Claudia Vilalva; Justulin Jr.,Luis Antonio; Lima,Patrícia Rodrigues de; Golim,Marjorie de Assis; Biscola,Natália Perussi; Castro,Mateus Vidigal de; Oliveira,Alexandre Leite Rodrigues de; Doiche,Danuta Pulz; Pereira,Elenize Jamas; Ferreira Jr.,Rui Seabra; Barraviera,Benedito. |
| ABSTRACT Background: Bone tissue repair remains a challenge in tissue engineering. Currently, new materials are being applied and often integrated with live cells and biological scaffolds. The fibrin biopolymer (FBP) proposed in this study has hemostatic, sealant, adhesive, scaffolding and drug-delivery properties. The regenerative potential of an association of FBP, biphasic calcium phosphate (BCP) and mesenchymal stem cells (MSCs) was evaluated in defects of rat femurs. Methods: Adult male Wistar rats were submitted to a 5-mm defect in the femur. This was filled with the following materials and/or associations: BPC; FBP and BCP; FBP and MSCs; and BCP, FBP and MSCs. Bone defect without filling was defined as the control group. Thirty and sixty days... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone regeneration; Biomaterials; Fibrin sealant; Fibrin biopolymer; Biphasic calcium phosphate; Mesenchymal stem cells. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992019000100320 |
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| Bellagamba,Bruno Corrêa; Abreu,Bianca Regina Ribas de; Grivicich,Ivana; Markarian,Carolina Franke; Chem,Eduardo; Camassola,Melissa; Nardi,Nance Beyer; Dihl,Rafael Rodrigues. |
| Abstract Mesenchymal stem cells (MSCs) are known for their important properties involving multilineage differentiation potential., trophic factor secretion and localization along various organs and tissues. On the dark side, MSCs play a distinguished role in tumor microenvironments by differentiating into tumor-associated fibroblasts or supporting tumor growth via distinct mechanisms. Cisplatin (CIS) is a drug widely applied in the treatment of a large number of cancers and is known for its cytotoxic and genotoxic effects, both in vitro and in vivo. Here we assessed the effects of CIS on MSCs and the ovarian cancer cell line OVCAR-3, by MTT and comet assays. Our results demonstrated the resistance of MSCs to cell death and DNA damage induction by CIS,... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Mesenchymal stem cells; Cisplatin; MTT; Comet assay; OVCAR-3 cells. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000100129 |
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| Covas,D.T.; Siufi,J.L.C.; Silva,A.R.L.; Orellana,M.D.. |
| Bone marrow contains a population of stem cells that can support hematopoiesis and can differentiate into different cell lines including adipocytes, osteocytes, chondrocytes, myocytes, astrocytes, and tenocytes. These cells have been denoted mesenchymal stem cells. In the present study we isolated a cell population derived from the endothelium and subendothelium of the umbilical cord vein which possesses morphological, immunophenotypical and cell differentiation characteristics similar to those of mesenchymal stem cells isolated from bone marrow. The cells were isolated from three umbilical cords after treatment of the umbilical vein lumen with collagenase. The cell population isolated consisted of adherent cells with fibroblastoid morphology which, when... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Mesenchymal stem cells; Umbilical vein; Adipocytes; Osteocytes; Cell differentiation. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000900006 |
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| Figueroa,Fernando E; Carrión,Flavio; Villanueva,Sandra; Khoury,Maroun. |
| Mesenchymal stem cells (MSCs) are now known to display not only stem cell multipotency, but also robust antiinflammatory and regenerative properties. After widespread in-vitro and in-vivo preclinical testing, autologous and allogeneic MSCs have been applied in a range of immune mediated conditions, including graft versus host disease, Crohn's disease, multiple sclerosis, refractory systemic lupus erythematosus and systemic sclerosis. Current data suggests that MSCs may not only replace diseased tissues, but also exert several trophic, regenerative and antiinflammatory effects. While the clinical outcome in case reports and phase I-II trials seems occasionally striking, these limited results point to the need to perform controlled multicenter trials. Future... |
| Tipo: Journal article |
Palavras-chave: Mesenchymal stem cells; Autoimmune diseases; Cellular therapy. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000300008 |
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| COLPO,GABRIELA D.; ASCOLI,BRUNA M.; WOLLENHAUPT-AGUIAR,BIANCA; PFAFFENSELLER,BIANCA; SILVA,EMILY G.; CIRNE-LIMA,ELIZABETH O.; QUEVEDO,JOÃO; KAPCZINSKI,FLÁVIO; ROSA,ADRIANE R.. |
| Mesenchymal stem cells (MSCs) are multipotent progenitor cells that have the capacity to differentiate into all lineages of mesodermal origin, e.g., cartilage, bone, and adipocytes. MSCs have been identified at different stages of development, including adulthood, and in different tissues, such as bone marrow, adipose tissue and umbilical cord. Recent studies have shown that MSCs have the ability to migrate to injured sites. In this regard, an important characteristic of MSCs is their immunomodulatory and anti-inflammatory effects. For instance, there is evidence that MSCs can regulate the immune system by inhibiting proliferation of T and B cells. Clinical interest in the use of MSCs has increased considerably over the past few years, especially because... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mesenchymal stem cells; Treatment; Neurodegenerative disease; Psychiatric disorders. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000301435 |
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| Carrara,R.C.V.; Orellana,M.D.; Fontes,A.M.; Palma,P.V.B.; Kashima,S.; Mendes,M.R.; Coutinho,M.A.; Voltarelli,J.C.; Covas,D.T.. |
| Bone marrow is a heterogeneous cell population which includes hematopoietic and mesenchymal progenitor cells. Dysregulated hematopoiesis occurs in chronic myelogenous leukemia (CML), being caused at least in part by abnormalities in the hematopoietic progenitors. However, the role of mesenchymal stem cells (MSCs) in CML has not been well characterized. The objectives of the present study were to observe the biological characteristics of MSCs from CML patients and to determine if MSCs originate in part from donors in CML patients after bone marrow transplantation (BMT). We analyzed MSCs from 5 untreated patients and from 3 CML patients after sex-mismatched allogeneic BMT. Flow cytometry analysis revealed the typical MSC phenotype and in vitro assays showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mesenchymal stem cells; Chimerism; Allogeneic hematopoietic stem cell transplantation; Chronic myeloid leukemia; Bcr-abl gene. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000100008 |
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| Ezquer,Marcelo E; Ezquer,Fernando E; Arango-Rodríguez,Martha L; Conget,Paulette A. |
| Currently, one of the main threats to public health is diabetes mellitus. Its most detrimental complication is diabetic nephropathy (DN), a clinical syndrome associated with kidney damage and an increased risk of cardiovascular disease. Irrespective of the type of diabetes, DN follows a well-known temporal course. The earliest detectable signs are microalbuminuria and histopathological changes including extracellular matrix deposition, glomerular basement membrane thickening, glomerular and mesangial expansion. Later on macroalbuminuria appears, followed by a progressive decline in glomerular filtration rate and the loss of glomerular podocytes, tubulointerstitial fibrosis, glomerulosclerosis and arteriolar hyalinosis. Tight glycemic and hypertension... |
| Tipo: Journal article |
Palavras-chave: Regenerative medicine; Diabetes mellitus; Diabetic nephropathy; Multipotent mesenchymal stromal cells; Mesenchymal stem cells. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000300010 |
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| Braghirolli,D.I.; Caberlon,B.; Gamba,D.; Petry,JFTC.; Dias,M.L.; Pranke,P.. |
| Currently, there is great clinical need for suitable synthetic grafts that can be used in vascular diseases. Synthetic grafts have been successfully used in medium and large arteries, however, their use in small diameter vessels is limited and presents a high failure rate. In this context, the aim of this study was to develop tissue engineering scaffolds, using poly(trimethylene carbonate-co-L-lactide) (PTMCLLA), for application as small diameter vascular grafts. For this, copolymers with varying trimethylene carbonate/lactide ratios – 20/80, 30/70, and 40/60 – were submitted to electrospinning and the resulting scaffolds were evaluated in terms of their physicochemical and biological properties. The scaffolds produced with PTMCLLA 20/80, 30/70, and 40/60... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poly(trimethylene carbonate-co-L-lactide); Vascular scaffolds; Mesenchymal stem cells; Endothelial progenitor cells; Smooth muscle cells. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000800611 |
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| Bertassoli,Bruno Machado; Costa,Emanuela Silva; Sousa,Cristiane Aparecida; Albergaria,Juliano Douglas Silva; Maltos,Kátia L. Melo; Goes,Alfredo Miranda; Matins,Thais Maria da Mata; Silva,Gerluza Aparecida Borges; Jorge,Erika Cristina. |
| ABSTRACT: Dental pulp stem cells (DPSC) have been showing a considerable potential for regenerative medicine. Pulps were collected from lower incisors (n=2) through direct access of the tooth pulp chamber. The isolated cells were cultured in alfa-MEM 10% FBS, in standard culture conditions. At the third passage, DPSC were characterized by flow cytometry (MHCI, CD54, CD73, CD90, CD45, CD11 and CD34); RT-PCR for Nanog gene; and their differentiation capacity in osteogenic, adipogenic and chondrogenic cell lines. Isolated cells exhibited adhesion capacity to plastic; fusiform morphology, and 80% confluence reached in approximately 3 days. These cells have also revealed positive expression for CD54, CD73 and CD90 markers; and negative expression for CD11, CD34... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mesenchymal stem cells; Dental pulp; Murine; Phenotypic characterization; Cellular differentiation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100335 |
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| Zych,J.; Stimamiglio,M.A.; Senegaglia,A.C.; Brofman,P.R.S.; Dallagiovanna,B.; Goldenberg,S.; Correa,A.. |
| Epigenetic mechanisms such as DNA methylation and histone modification are important in stem cell differentiation. Methylation is principally associated with transcriptional repression, and histone acetylation is correlated with an active chromatin state. We determined the effects of these epigenetic mechanisms on adipocyte differentiation in mesenchymal stem cells (MSCs) derived from bone marrow (BM-MSCs) and adipose tissue (ADSCs) using the chromatin-modifying agents trichostatin A (TSA), a histone deacetylase inhibitor, and 5-aza-2′-deoxycytidine (5azadC), a demethylating agent. Subconfluent MSC cultures were treated with 5, 50, or 500 nM TSA or with 1, 10, or 100 µM 5azadC for 2 days before the initiation of adipogenesis. The differentiation was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mesenchymal stem cells; Trichostatin A; 5-Aza-2′-deoxycytidine; Adipocyte differentiation; Epigenetics. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000500405 |
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| Zhang,Li; Liu,Dan; Pu,Dan; Wang,Yanwen; Li,Li; He,Yanqi; Li,Yalun; Li,Lei; Li,Weimin. |
| BACKGROUND: Mesenchymal stem cells (MSCs) are considered the best candidate in stem cells therapy due to their multipotent differentiation ability, low expression of co-stimulatory molecules (CD80, CD86, CD34 and HLA-II) and immunosuppression effects on in vivo immune responses. MSCs were now widely used in clinical trials but received no encourage results. The major problem was the fate of engrafted MSCs in vivo could not be defined. Some studies indicated that MSCs could induce immune response and result in the damage and rejection of MSCs. As toll like receptors (TLRs) are important in inducing of immune responses, in this study we study the role of TLR7 in mediating the immune status of MSCs isolated from umbilical cord. RESULTS: Our results indicated... |
| Tipo: Journal article |
Palavras-chave: Mesenchymal stem cells; Umbilical cord; Toll like receptor 7; Immunogenicity; Pro-inflammatory molecules. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100006 |
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| Shao,Jin; Zhang,Weiwei; Yang,Tieyi. |
| Bone is a unique tissue which could regenerate completely after injury rather than heal itself with a scar. Compared with other tissues the difference is that, during bone repairing and regeneration, after the inflammatory phase the mesenchymal stem cells (MSCs) are recruited to the injury site and differentiate into either chondroblasts or osteoblasts precursors, leading to bone repairing and regeneration. Besides these two precursors, the MSCs can also differentiate into adipocyte precursors, skeletal muscle precursors and some other mesodermal cells. With this multiline-age potentiality, the MSCs are probably used to cure bone injury and other woundings in the near future. Here we will introduce the recent developments in understanding the mechanism of... |
| Tipo: Journal article |
Palavras-chave: Mesenchymal stem cells; Bone regeneration; Bone repairing; Tissue engineering. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100062 |
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| Registros recuperados: 20 | |
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