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Rev. cuba. med ; 53(4): 430-444, sep.-dic. 2014.
Artigo em Espanhol | LILACS, CUMED | ID: lil-735341

RESUMO

OBJETIVOS: examinar el perfil de anticuerpos en pacientes con lupus eritematoso sistémico y establecer la correlación entre los niveles de anticuerpos y la actividad de la enfermedad y de la nefritis lúpica. MÉTODOS: en 213 pacientes con lupus eritematoso sistémico, atendidos de forma consecutiva, se determinaron los anticuerpos anti-DNA de doble cadena (DNAdc), antinucleosoma (Nu), anti-Sm, anti-RNP, anti-Ro, anti-La y anti-Scl-70 por ensayo inmunoadsorbente ligado a enzima (ELISA), el C3 y el C4. La actividad de la enfermedad fue evaluada por el índice SLEDAI-2K, sin la contribución de anti-DNAdc, C3 ni C4. Los niveles de anticuerpos, el complemento y la actividad del lupus eritematoso sistémico fueron correlacionados. RESULTADOS: los niveles de todos los anticuerpos resultaron superiores significativamente en los pacientes en fase activa de la enfermedad con respecto a los que se hallaban en la fase inactiva. Los coeficientes de correlación de Spearman más altos con la puntuación de SLEDAI-2K correspondieron a los anti-Nu y anti-DNAdc (p= 0,856 y p= 0,616, respectivamente, p < 0,001 para ambos). Las áreas bajo de la curva (AUC) del análisis COR de la actividad del LES fueron en orden decreciente para los anti-Nu= 0,948, anti-DNAdc= 0,810, anti-RNP= 0,705, C4= 0,704, anti-Sm= 0,703, C3= 0,688, anti-Scl-70= 0,611, anti-La= 0,601 y anti-Ro= 0,593; y de la actividad renal para los anti-Nu= 0,845, anti-DNAdc= 0,755, C4= 0,694, C3= 0,670, anti-Sm= 0,641, anti-RNP= 0,630, anti-Scl-70= 0,611, anti-Ro= 0,593 y anti-La= 0,567. CONCLUSIÓN: los anticuerpos anti-Nu mostraron una capacidad discriminatoria excelente para la actividad del LES y de la actividad renal lúpica, superior a la de los anti-DNAdc y el resto de los marcadores.


OBJECTIVES: to examine the profile of antibodies in patients with systemic lupus erythematosus and establish the correlation between antibody levels and disease activity, and lupus nephritis. METHODS: anti-double stranded DNA (dsDNA), antinucleosoma (Nu), anti-Sm, anti-RNP, anti-Ro, anti-La, and anti-Scl-70 antibodies by enzyme-linked immunosorbent assay (ELISA) as well as C3 and C4 were determined in 213 patients with systemic lupus erythematosus who were treated consecutively. Disease activity was assessed by the SLEDAI 2K-index, without the contribution of anti-dsDNA, C3 or C4. The levels of antibodies, complement and activity of systemic lupus erythematosus were correlated. RESULTS: the levels of antibodies turned out to be remarkably higher in patients in the active phase of the disease compared to those who were in the inactive phase. The higher Spearman correlation coefficients with SLEDAI-2K score corresponded to the anti-Nu and anti-dsDNA (p = 0.856 and p = 0.616, respectively, p <0.001 for both). The areas under the ROC curve analysis of the activity of systemic lupus erythematosus were in descending order as follows: anti-Nu = 0.948; anti-dsDNA = 0.810; anti-RNP = 0.705; C4 = 0.704; anti-Sm = 0.703; C3 = 0.688; anti-Scl-70 = 0.611; = 0.601 anti-La. Anti-Ro = 0.593; and renal activity for anti-Nu = 0.845; anti-dsDNA = 0.755; C4= 0.694; C3 = 0.670; anti-Sm = 0.641; anti-RNP = 0.630; anti-Scl-70 = 0.611; anti-Ro = 0.593 and anti-La = 0.567. CONCLUSION: the anti-Un exhibit excellent activity discriminating capacity of SLE lupus and renal activity, higher than the anti-dsDNA and other markers.


Assuntos
Humanos , Nucleossomos/efeitos dos fármacos , Biomarcadores , Lúpus Eritematoso Sistêmico/diagnóstico , Anticorpos
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