This double-blind controlled study assessed whether reduced doses of omega interferon (rFeIFN-omega) (Virbagen Omega) could improve the clinical signs of canine atopic dermatitis (CAD) over a 6-month period, in comparison with cyclosporin. Thirty-one dogs diagnosed with CAD were entered in the study. Complicating infections were treated prior to entry. Dogs received 10 injections of rFeIFN-omega (1-5 million units according to bodyweight) or placebo over 6 months, and placebo capsules or cyclosporin (5 mg/kg) once daily for 2 months and then twice weekly for 4 months in groups 1 and 2 respectively. Flea control, non-medicated shampooing and ear cleansing were performed regularly. If a bacterial infection or Malassezia overgrowth developed, it was treated with oral cephalexin or with 3% chlorhexidine shampoo respectively. Oral prednisolone was used before day 90 to relieve pruritus when required for humane reasons (1 mg/kg once daily for 7 days). The CADESI-03 and a pruritus index were evaluated on day (D) 0, D14, D35, D56, D90, D120 and D180. No significant difference was detected between the groups for the time courses of lesions or pruritus over 6 months. On D90, the proportions of dogs with > or =50% improvement of pruritus and lesion scores were 56% and 72% respectively with interferon, 75% and 75% respectively with cyclosporin. Five dogs from group 1 and two dogs from group 2 were withdrawn from the study for treatment failure. Both products were well tolerated. Treatment with rfeIFN-omega at low doses may help for the long-term management of CAD.
ResumenEl prurito es una causa frecuente de consulta dermatológica en clínica canina, producido sobre todo por dermatitis atópica y otras patologías principalmente alérgicas.El objetivo principal de este estudio es demostrar la efectividad de los peloides en el control del prurito canino en cualquiera de sus manifestaciones (lamidomordisqueo), con o sin sobrecrecimientos por microorganismos.El tratamiento con peloides se considera un tratamiento complementario, como adyuvante o paliativo, o como alternativo en períodos de cesación o contraindicación de la farmacoterapia, pudiendo integrarse en programas terapéuticos globales. Los objetivos a largo plazo son aumentar la calidad de vida, mejorando la relación entre el animal y el propietario, al no existir el factor rechazo por olores o visión de lesiones desagradables, lo que también ayudará al animal a recuperar su equilibrio emocional, repercutiendo favorablemente en su salud.Este estudio se ha realizado bajo la dirección de Gustavo Machicote Goth (PhD), acreditado experto en dermatología veterinaria.Se han establecido unos criterios de inclusión y exclusión para la selección de las mascotas (perros); todos los animales seleccionados presentan con prurito podal, axilar, inguinal y/o acral.Se ha aplicado un peloide formulado a partir de varias arcillas seleccionadas, agua termal (clorurado sulfatado sódica) y avena coloidal.La aplicación del peloide se realizó 5 días a la semana (de lunes a viernes), durante 3 semanas, es decir, 15 aplicaciones, evaluando la evolución de las lesiones en
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