title: Enhanced effect of high-dose leukocytapheresis using a large filter in rheumatoid arthritis.
abstract: To evaluate the efficacy of high-dose leukocytapheresis (LCAP) using a large filter in patients with refractory rheumatoid arthritis (RA), we conducted a multicenter, nonrandomized, open-label clinical study. Thirty patients with highly active RA were treated with high-dose LCAP performed 3-5 sessions at 1-week intervals using a CS-180S filter (CS-180S group); the treatment involves the removal of leukocytes from a higher blood volume per body weight (100;Sml/kg). The clinical response was evaluated at 4 and 8 weeks after a series of LCAP using the 28-joint disease activity score (DAS28). Similar data of 53 patients treated with conventional LCAP (60;Sml/kg) using a standard filter, CS-100, were compared as a control (CS-100 group). The CS-180S filter demonstrated a higher adsorption capacity for leukocytes, particularly lymphocytes. The CS-180S group exhibited significant improvements in each item of DAS28 after treatment although the CS-100 group did not demonstrate such improvements in the CRP level and the ESR. Compared to the CS-100 group, the patients of the CS-180S group exhibited a tendency toward improvement with respect to the CRP level and ESR (P = 0.057 and 0.041, respectively). According to the EULAR improvement criteria based on DAS28, 60% and 45% of the patients from CS-180S and CS-100 groups achieved moderate or more responses, respectively, at 4 weeks after treatment. These results suggest that compared to conventional LCAP, high-dose LCAP may enhance the suppression of RA disease activity.
authors: First Department of Internal Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan.
authors: Katsumi
authors: K
authors: Eguchi
authors: Kazuyoshi
authors: K
authors: Saito
authors: Masakazu
authors: M
authors: Kondo
authors: Toshihiko
authors: T
authors: Hidaka
authors: Yukitaka
authors: Y
authors: Ueki
authors: Yoshiya
authors: Y
authors: Tanaka
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D004306:Dose-Response Relationship, Immunologic; D005260:Female; D005374:Filtration / Q000295:instrumentation; D006801:Humans; D007596:Joints / Q000473:pathology / Q000503:physiopathology; D007937:Leukapheresis / Q000295:instrumentation* / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D016896:Treatment Outcome