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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | da Silva, Simone Vargas Renovato-Martins, Mariana Ribeiro-Pereira, Cristiane Citelli, Marta Barja-Fidalgo, Christina |
| Description | Country affiliation: Brazil Author Affiliation: da Silva SV ( Departamento de Biologia Celular, Laboratório de Farmacologia Celular e Molecular, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.); Renovato-Martins M ( Departamento de Biologia Celular, Laboratório de Farmacologia Celular e Molecular, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.); Ribeiro-Pereira C ( Departamento de Biologia Celular, Laboratório de Farmacologia Celular e Molecular, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.); Citelli M ( Departamento de Nutrição Básica e Experimental, Instituto de Nutrição, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.); Barja-Fidalgo C ( Departamento de Biologia Celular, Laboratório de Farmacologia Celular e Molecular, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.) |
| Abstract | OBJECTIVE: To investigate the role of obesity on the bone marrow microenvironment and evaluate its possible impact on the adipogenic potential of mesenchymal stem cells (MSC). METHODS: C57BL/6 male mice were fed with a high-fat diet (HFD) for 10 weeks. Femurs and tibiae were collected, and bone marrow mesenchymal stem cells (BM-MSC) were isolated and analyzed for proliferative potential, immunophenotype, and expression of adipogenesis markers. Their capacity to produce extracellular matrix proteins and proinflammatory cytokines in vitro was also evaluated. RESULTS: HFD mice presented a significant increase in bone marrow cellularity and higher tumor necrosis factor- production in vitro. BM-MSC from HFD mice had higher proliferative capacity, produced more extracellular matrix proteins associated with adipogenesis, collagen I, and collagen IV, and showed increased constitutive expression of adipogenic markers, peroxisome proliferator-activated receptor-γ, and CCAAT/enhanced binding protein family- , without changes in preadipocyte factor-1 expression. Incubation with adipocyte-differentiation medium induced further increase in CCAAT/enhanced binding protein family- and augmented adiponectin expression in obese BM-MSC. These alterations did not result in increased adipogenic differentiation within the bone marrow. Moreover, BM-HSC from HFD mice, co-cultivated with BM-MSCs from lean mice, exerted paracrine effects on these cells, inducing augment of peroxisome proliferator-activated receptor-γ. CONCLUSIONS: The data suggest that obesity promotes an inflammatory microenvironment in bone marrow that commits BM-MSC to adipogenesis. |
| File Format | HTM / HTML |
| ISSN | 19307381 |
| Issue Number | 12 |
| Journal | Obesity |
| Volume Number | 24 |
| e-ISSN | 1930739X |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2016-12-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nutrition and Dietetics Endocrinology, Diabetes and Metabolism Endocrinology |
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