Avtor/Urednik		Kosmač, Miha; Avčin, Tadej; Toplak, Nataša; Simonini, Gabriele; Cimaz, Ronaldo; Čurin-Šerbec, Vladka
Naslov		Exploring the binding sites of anti-infliximab antibodies in pediatric patients with rheumatic diseases treated with infliximab
Tip		članek
Vir		Pediatr Res
Vol. in št.		Letnik 69, št. 3
Leto izdaje		2011
Obseg		str. 243-8
Jezik		eng
Abstrakt		Over the past decade, the treatment of a variety of immune-mediated diseases has improved greatly due to the introduction of biologics for therapies in cases that are nonresponsive to traditional treatments. However, a side effect not encountered in traditional treatments is the immunogenicity of the biologics themselves. Our aim was to investigate the anti-infliximab-antibody response in pediatric patients receiving infliximab for juvenile idiopathic arthritis and other pediatric rheumatic diseases, with a focus on an analysis of the binding sites of these antibodies. We show that anti-infliximab antibodies developed in 43% of patients receiving infliximab therapy. Neutralization studies showed that in all these patients, the antibodies were directed toward the variable domains of infliximab, as they inhibited binding of infliximab to TNF. A more precise determination of the antibody epitopes using synthetic peptides was not achieved, indicating that all the antibody binding sites were composed of discontinuous segments of infliximab.
Deskriptorji		ANTIBODIES ANTIBODIES, MONOCLONAL ANTIRHEUMATIC AGENTS BINDING SITES CHILD CHILD, PRESCHOOL EPITOPES PROTEIN CONFORMATION RHEUMATIC DISEASES