Title |
Hyperlipidemic microenvironment conditionates damage mechanisms in human chondrocytes by oxidative stress
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Published in |
Lipids in Health and Disease, June 2017
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DOI | 10.1186/s12944-017-0510-x |
Pubmed ID | |
Authors |
Daniel Medina-Luna, Mónica Guadalupe Santamaría-Olmedo, Yessica Zamudio-Cuevas, Karina Martínez-Flores, Javier Fernández-Torres, Gabriela Angélica Martínez-Nava, Denise Clavijo-Cornejo, Cristina Hernández-Díaz, Anell Olivos-Meza, Luis Enrique Gomez-Quiroz, María Concepción Gutiérrez-Ruiz, Carlos Pineda, Francisco Blanco, Anthony M. Reginato, Alberto López-Reyes |
Abstract |
Currently, two pathogenic pathways describe the role of obesity in osteoarthritis (OA); one through biomechanical stress, and the other by the contribution of systemic inflammation. The aim of this study was to evaluate the effect of free fatty acids (FFA) in human chondrocytes (HC) expression of proinflammatory factors and reactive oxygen species (ROS). HC were exposed to two different concentrations of FFA in order to evaluate the secretion of adipokines through cytokines immunoassays panel, quantify the protein secretion of FFA-treated chondrocytes, and fluorescent cytometry assays were performed to evaluate the reactive oxygen species (ROS) production. HC injury was observed at 48 h of treatment with FFA. In the FFA-treated HC the production of reactive oxygen species such as superoxide radical, hydrogen peroxide, and the reactive nitrogen species increased significantly in a at the two-dose tested (250 and 500 μM). In addition, we found an increase in the cytokine secretion of IL-6 and chemokine IL-8 in FFA-treated HC in comparison to the untreated HC. In our in vitro model of HC, a hyperlipidemia microenvironment induces an oxidative stress state that enhances the inflammatory process mediated by adipokines secretion in HC. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 36 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 6 | 17% |
Other | 5 | 14% |
Student > Master | 5 | 14% |
Researcher | 4 | 11% |
Student > Ph. D. Student | 3 | 8% |
Other | 6 | 17% |
Unknown | 7 | 19% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 11 | 31% |
Biochemistry, Genetics and Molecular Biology | 8 | 22% |
Agricultural and Biological Sciences | 2 | 6% |
Unspecified | 2 | 6% |
Chemistry | 2 | 6% |
Other | 4 | 11% |
Unknown | 7 | 19% |