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1.
Drug Metab Pers Ther ; 2020 Nov 06.
Artículo en Inglés | MEDLINE | ID: mdl-33155988

RESUMEN

Objectives To evaluate the serum dosage of the biomedicine (DBM) and the incidence of antidrug antibody (ADA) against antitumor necrosis factor (TNF) in spondyloarthritis, and to demonstrate the influence of these parameters on the clinical efficiency. Methods We conducted a cross-sectional multicentric study including patients with spondylarthritis (SpA) under antiTNF (infliximab [INF], etanercept [ETA] and adalimumab [ADL]) for at least 6 months. A dosage of the ADA and DBM were practiced by the immuno-enzymatic essay. Result Seventy one patients were recruited. Disease modifying antirheumatic drugs (DMARDs) were associated with anti-TNF in 30%. ADA was positive in 54% for INF, 33% for ADL and 0% for ETA with a significant difference(p<0.0001). Immunogenicity was correlated to a bad therapeutic response (Bath Ankylosing Spondylitis Disease Activity Index [BASDAI]≥4)(p=0.04). The DBM was inversely correlated with the rate of ADA for patients treated with INF(p<0.0001) and ADL(p<0.0001). The DBM was also inversely correlated with BASDAI of INF(p=0.03) and ADL (p=0.01). ADA was significantly associated with an anterior switch of anti TNF(p=0.04), the use of INF(p=0.002), presence of coxitis(p=0.01) and higher body mass index (BMI)(p=0.007). DMARDs associated with anti TNF were not a protective factor for positive ADA. In a multivariate study, only INF and BMI were independent factors of positive ADA. Conclusion The ADA formation lowered the DBM and favored the therapeutic failure.

2.
BMJ Case Rep ; 20142014 Nov 24.
Artículo en Inglés | MEDLINE | ID: mdl-25422327

RESUMEN

Takayasu's arteritis (TA) is a rare granulomatous vasculitic disease. Recently, experimental studies and several case reports have supported the use of anti-tumour necrosis factor (TNF) therapy for severe forms of TA. We report a case of a 58-year-old woman who was followed for spondyloarthritis. Her disease was resistant to non-steroidal anti-inflammatory drugs, and TNF-α blockers were initiated. The patient developed asthaenia and severe back pain. The erythrocyte sedimentation rate was 82 mm and C reactive protein was 192 mg/L. Based on thickened walls of large vessel on MRI, a diagnosis of TA was established. Under corticosteroids and after discontinuation of TNF-α blockers, the patient remained free of symptoms at 8-month follow-up.


Asunto(s)
Espondiloartritis/tratamiento farmacológico , Arteritis de Takayasu/inducido químicamente , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores , Corticoesteroides/uso terapéutico , Diagnóstico Diferencial , Femenino , Humanos , Persona de Mediana Edad , Arteritis de Takayasu/diagnóstico , Arteritis de Takayasu/tratamiento farmacológico , Factor de Necrosis Tumoral alfa/sangre , Factor de Necrosis Tumoral alfa/uso terapéutico
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