Biblioteca Hospital 12 de Octubre

Effect of nitric oxide on mitochondrial activity of human synovial cells (Registro nro. 3991)

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Campo de control de longitud fija 03964na a2200241 4500
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Campo de control H12O
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Campo de control 20210625062801.0
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Campo de control de longitud fija 130622s2011 xxx||||| |||| 00| 0 eng d
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Centro transcriptor H12O
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Código de lengua del texto/banda sonora o título independiente eng
100 ## - PUNTO DE ACCESO PRINCIPAL - NOMBRE DE PERSONA
9 (RLIN) 1007
Nombre de persona Arenas Barbero, Joaquín
Término indicativo de función Instituto de Investigación
100 ## - PUNTO DE ACCESO PRINCIPAL - NOMBRE DE PERSONA
9 (RLIN) 345
Nombre de persona Martín Casanueva, Miguel Ángel
Término indicativo de función Bioquímica Clínica
245 00 - MENCIÓN DE TÍTULO
Título Effect of nitric oxide on mitochondrial activity of human synovial cells
Tipo de material [artículo]
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Nombre del editor distribuidor etc. BMC Musculoskeletal Disorders,
Fecha de publicación distribución etc. 2011
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Extensión 12:42.
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Nota general Formato Vancouver:
Cillero-Pastor B, Martin MA, Arenas J, López-Armada MJ, Blanco FJ. Effect of nitric oxide on mitochondrial activity of human synovial cells. BMC Musculoskelet Disord. 2011;12:42.
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Nota de "Con" PMID: 21303534
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Nota de bibliografía etc. Contiene 42 referencias
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Sumario etc. BACKGROUND: Nitric oxide (NO) is a messenger implicated in the destruction and inflammation of joint tissues. Cartilage and synovial membrane from patients with rheumatoid arthritis (RA) and osteoarthritis (OA) have high levels of NO. NO is known to modulate various cellular pathways and, thus, inhibit the activity of the mitochondrial respiratory chain (MRC) of chondrocytes and induce the generation of reactive oxygen species (ROS) and cell death in multiple cell types. For these reasons, and because of the importance of the synovial membrane in development of OA pathology, we investigated the effects of NO on survival, mitochondrial function, and activity of fibroblastic human OA synovial cells.
METHODS: Human OA synovia were obtained from eight patients undergoing hip joint replacement. Sodium nitroprusside (SNP) was used as a NO donor compound and cell viability was evaluated by MTT assays. Mitochondrial function was evaluated by analyzing the mitochondrial membrane potential (Δψm) with flow cytometry using the fluorofore DePsipher. ATP levels were measured by luminescence assays, and the activities of the respiratory chain complexes (complex I: NADH CoQ₁ reductase, complex II: succinate dehydrogenase, complex III: ubiquinol-cytochrome c reductase, complex IV: cytochrome c oxidase) and citrate synthase (CS) were measured by enzymatic assay. Protein expression analyses were performed by western blot.
RESULTS: SNP at a concentration of 0.5 mM induced cell death, shown by the MTT method at different time points. The percentages of viable cells at 24, 48 and 72 hours were 86.11 ± 4.9%, 74.31 ± 3.35%, and 43.88 ± 1.43%, respectively, compared to the basal level of 100% (*p < 0.05). SNP at 0.5 mM induced depolarization of the mitochondrial membrane at 12 hours with a decrease in the ratio of polarized cells (basal = 2.48 ± 0.28; SNP 0.5 mM = 1.57 ± 0.11; *p < 0.01). The time course analyses of treatment with SNP at 0.5 mM demonstrated that treatment reliably and significantly reduced intracellular ATP production (68.34 ± 14.3% vs. basal = 100% at 6 hours; *p < 0.05). The analysis of the MRC at 48 hours showed that SNP at 0.5 mM increased the activity of complexes I (basal = 36.47 ± 3.92 mol/min/mg protein, SNP 0.5 mM = 58.08 ± 6.46 mol/min/mg protein; *p < 0.05) and III (basal = 63.87 ± 6.93 mol/min/mg protein, SNP 0.5 mM = 109.15 ± 30.37 mol/min/mg protein; *p < 0.05) but reduced CS activity (basal = 105.06 ± 10.72 mol/min/mg protein, SNP at 0.5 mM = 66.88 ± 6.08 mol/min/mg protein.; *p < 0.05), indicating a decrease in mitochondrial mass. Finally, SNP regulated the expression of proteins related to the cellular cycle; the NO donor decreased bcl-2, mcl-1 and procaspase-3 protein expression.
CONCLUSIONS: This study suggests that NO reduces the survival of OA synoviocytes by regulating mitochondrial functionality, as well as the proteins controlling the cell cycle.
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9 (RLIN) 625
Nombre de entidad o nombre de jurisdicción como elemento inicial Instituto de Investigación imas12
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Identificador Uniforme del Recurso (URI) http://bmcmusculoskeletdisord.biomedcentral.com/articles/10.1186/1471-2474-12-42
Acceso Acceso libre
942 ## - ENTRADA PARA ELEMENTOS AGREGADOS (KOHA)
Suprimido en OPAC Público
Fuente de clasificación o esquema de ordenación en estanterías
Koha [por defecto] tipo de item Artículo
Existencias
Suprimido Estado de pérdida Fuente de clasificación o esquema de ordenación en estanterías Estropeado No para préstamo Localización permanente Localización actual Fecha de adquisición Signatura completa Fecha última consulta Identificador uniforme del recurso Fecha del precio de reemplazo Tipo de item de Koha
          Hospital Universitario 12 de Octubre Hospital Universitario 12 de Octubre 2016-01-21 PC3991 2016-01-21 http://opac.h12o.es/pdf/pc/3/pc3991.pdf 2016-01-21 Artículo

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