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1.
Rev. bras. reumatol ; 52(1): 9-15, jan.-fev. 2012. ilus, tab
Article in Portuguese | LILACS | ID: lil-611466

ABSTRACT

OBJETIVOS: Avaliar a resposta clínica após a estratégia de troca entre agentes antifator de necrose tumoral alfa (anti-TNF-alfa) em pacientes com artrite reumatoide (AR). PACIENTES E MÉTODOS: Foram incluídos 99 pacientes com diagnóstico de AR (American College of Rheumatology, 1987), em uso de terapia anti-TNF-alfa, para avaliação da resposta terapêutica após 24 semanas. A estratégia de troca foi feita se, após 12 a 24 semanas, houvesse relato de evento adverso sério (T: toxicidade) ou se não ocorresse redução maior que 0,6 do índice de atividade da doença (DAS28) inicial (RI: resposta inadequada). Nesse último caso, o paciente foi considerado como falência primária (FP). Falência secundária (FS) foi definida se houvesse perda de resposta após melhora inicial. Remissão (DAS28 < 2,6), baixa atividade de doença (2,61 < 3,2) e melhora funcional [aumento > 0,2 do questionário de avaliação da saúde (HAQ) inicial] foram avaliadas por análise de regressão linear. P < 0,05 foi considerado significante. RESULTADOS: A estratégia de troca foi realizada em 39 (39,4 por cento) pacientes, especialmente por FP (24,3 por cento), FS (35,1 por cento) e T (40,5 por cento). A taxa de retenção ao primeiro agente foi de 60,1 por cento, e o tempo médio para a troca foi de 14,2 ± 10,9 meses. Após a troca, houve tendência à queda do DAS28 (4,7 ± 1,4; P = 0,08), mas não do HAQ (1,2 ± 0,77; P = 0,11). Cerca de 43 por cento deles alcançaram boa/moderada resposta EULAR. O principal determinante da troca foi o DAS28 inicial mais elevado, independente de idade, tempo de doença e capacidade funcional. CONCLUSÃO: A estratégia de troca entre agentes anti-TNF-alfa é válida para o controle da atividade de doença, embora com baixa probabilidade de remissão e sem melhora significativa da capacidade funcional.


OBJECTIVES: To assess clinical response after switching between anti-tumor necrosis factor-alpha (anti-TNF-alpha) agents in patients with rheumatoid arthritis (RA). PATIENTS AND METHODS: This study included 99 patients diagnosed with RA American College of Rheumatology, 1987), on anti-TNF-alpha therapy, to assess the therapeutic response after 24 weeks. Switching was performed if, after 12 to 24 weeks, a severe adverse event was reported (toxicity: T) or if no reduction greater than 0.6 in the initial Disease Activity Score 28 (DAS28) occurred (inadequate response: IR). In case of IR, the patient was considered as primary failure (PF). Secondary failure (SF) was defined as loss of response after initial improvement. Remission (DAS28 < 2.6), low disease activity (between 2.61 and 3.2), and functional improvement [increase in the initial Health Assessment Questionnaire (HAQ) > 0.2] were assessed by use of linear regression analysis. The significance level adopted was P < 0.05. RESULTS: Switching was performed in 39 (39.4 percent) patients, especially due to PF (24.3 percent), SF (35.1 percent) and T (40.5 percent). The retention rate of the first agent was 60.1 percent, and the mean time for switching was 14.2 ± 10.9 months. After switching, a tendency towards a decrease in DAS28 was observed (4.7 ± 1.4; P = 0.08), but not in the HAQ (1.2 ± 0.77; P = 0.11). Around 43 percent of the patients achieved good/moderate EULAR response. The major determinant of switching was a higher initial DAS28, independent of age, duration of disease, and functional capacity. CONCLUSION: Switching between anti-TNF-alpha agents is a valid strategy to control disease activity, despite the low likelihood of remission and no significant improvement in functional capacity.


Subject(s)
Female , Humans , Male , Middle Aged , Antirheumatic Agents/therapeutic use , Arthritis, Rheumatoid/drug therapy , Arthritis, Rheumatoid/physiopathology , Drug Substitution , Tumor Necrosis Factor-alpha/antagonists & inhibitors , Retrospective Studies , Treatment Outcome
2.
Rev. chil. dermatol ; 27(2): 199-202, 2011. ilus
Article in Spanish | LILACS | ID: lil-645030

ABSTRACT

El pioderma gangrenoso (PG) es una dermatitis neutrofílica, que en algunos casos puede ser severa y de difícil manejo. Presentamos el caso de una paciente con múltiples lesiones de PG asociadas a colitis ulcerosa, en la cual, por severidad del cuadro, se optó por adicionar infliximab al tratamiento habitual. La respuesta clínica fue excelente y rápida tras la primera dosis de infliximab, pese a que recibió solo dos de las tres dosis recomendadas habitualmente. La mejoría cutánea y digestiva se ha mantenido un año después de este tratamiento. Infliximab ha demostrado ser, en este y otros reportes, una herramienta muy útil, especialmente en casos de compromiso severo como en nuestra paciente. Se requiere mas evidencia aún para comprobar en cuáles pacientes podría ser beneficioso. Se presenta este caso por su severidad y la rápida y sostenida respuesta obtenida con infliximab.


Pyoderma gangrenosum (PG) is a neutrophilic dermatosis and in some cases can be severe and difficult to manage. We report the case of a patient with multiple lesions of PG associated with ulcerative colitis. Due to the severity of the clinical presentation treatment with infliximab was added to standard therapy. Clinical response was excellent and fast after the first dose of infliximab, although ha received only two of the three doses usually recomended. Skin and digestive improvement has been maintained 1 year after treatment. Infliximab has proven, in this and other reports, as a very useful tool in the treatment of PG, especially in cases of severe involvement as in our patient. More evidence is required to prove in which patients with PG infliximab could beneficial. We present this clinical case because of its severity and the rapid and susteined response obtained with infliximab.


Subject(s)
Humans , Adult , Female , Antibodies, Monoclonal/therapeutic use , Colitis, Ulcerative/complications , Pyoderma Gangrenosum/etiology , Pyoderma Gangrenosum/drug therapy , Colitis, Ulcerative/drug therapy , Tumor Necrosis Factor-alpha/antagonists & inhibitors , Treatment Outcome
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