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• W2769943943 abstract "La artritis reumatoidea (AR) es una enfermedad autoinmune y crónica caracterizada por la presencia de autoanticuerpos como factor reumatoide (FR) y anticuerpos antiproteínas citrulinadas. Una población de células T helper foliculares (Tfh), que expresan CD4+CXCR5+, colabora con las células B para la producción de anticuerpos. La expresión diferencial de CXCR3 y CCR6 dentro de las células CD4+CXCR5+ define 3 subpoblaciones mayores: CXCR3+CCR6− (Tfh1), CXCR3-CCR6− (Tfh2) y CXCR3-CCR6+ (Tfh17). El objetivo del estudio fue evaluar si existe asociación entre el porcentaje de estas células y la AR, y la correlación de las mismas con actividad de la enfermedad. Participaron 24 pacientes con AR, 22 controles saludables (CS) y 16 pacientes con artritis indiferenciada (AI). Los porcentajes de las células CD4+CXCR5+ y sus subpoblaciones fueron analizados por citometría de flujo. No hubo diferencias en los porcentajes de células CD4+CXCR5+ entre los pacientes con AR y CS o entre AR y AI. Tampoco en las subpoblaciones Tfh1, Tfh2 y Tfh17. No hubo correlación entre las células T CD4+CXCR5+, Tfh1, Tfh2 y Tfh17 y el «Disease Activity Score in twenty-eigth joints» (DAS28), así como tampoco con la velocidad de sedimentación globular. Sorpresivamente, hubo una correlación positiva entre las células Tfh17 y la proteína C reactiva. Finalmente, no hubo correlación entre las células TCD4+CXCR5+ o cualquiera de las subpoblaciones y antivimentina mutada citrulinada así como tampoco entre dichas células y el FR. No se hallaron diferencias entre los porcentajes de las células T CD4+CXCR5+ y sus subpoblaciones en sangre periférica de los pacientes con AR y las células de los grupos controles. Esto no descarta un papel patogénico de estas células en el desarrollo y actividad de la AR. Rheumatoid arthritis (RA) is a chronic autoimmune disease that is characterized by the presence of different autoantibodies such as rheumatoid factor (RF) and anti-citrullinated protein antibodies. CD4 T cells expressing CXCR5, referred as follicular helper T cells (Tfh), collaborate with B cells to produce antibodies. Differential expression of CXCR3 and CCR6 within CD4+CXCR5+ T cells defines three mayor subsets: CXCR3+CCR6− (Tfh1), CXCR3-CCR6− (Tfh2) and CXCR3-CCR6+ (Tfh17). The aim of the study was to assess whether there is an association between the percentage of these cells and RA and whether there is a correlation with disease activity. Twenty-four RA patients, 22 healthy controls (HC) and 16 undifferentiated arthritis (UA) patients were included. Percentage of CD4+CXCR5+ T cells and their subsets were analyzed by flow cytometry. No differences were found in the percentages of CD4+CXCR5+ T cells in the comparison of RA vs HC or RA vs UA patients. Tfh1, Tfh2 and Tfh17 subsets showed no differences either. There was no correlation between CD4+CXCR5+ T cells, Tfh1, Tfh2 and Tfh17, and Disease Activity Score in twenty-eight joints (DAS28) or erythrocyte sedimentation rate. Surprisingly, there was a positive correlation between Tfh17 cells and C-reactive protein. Finally, there was no correlation between CD4+CXCR5+ T cells, or their subsets, and anti-mutated citrullinated vimentin, or between the cells and RF. There were no differences between the percentages of CD4+CXCR5+ T cells and their subsets in peripheral blood of RA patients and the percentages of cells in the control groups. This finding does not rule out a pathogenic role of these cells in the development and activity of RA." @default.
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• W2769943943 date "2017-11-01" @default.
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• W2769943943 title "Células T helper foliculares en sangre periférica de pacientes con artritis reumatoide" @default.
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• W2769943943 doi "https://doi.org/10.1016/j.reuma.2016.07.003" @default.
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