The reduction of serum B-lymphocyte activating factor levels following quinacrine add-on therapy in systemic lupus erythematosus

Scandinavian Journal of Immunology
E ToubiY Shoenfeld

Abstract

B-Lymphocyte-activating factor (BAFF/BLyS) is a survival factor for B cells, belonging to the tumor necrosis ligand super family. Serum BAFF levels have been found to be elevated in patients with systemic lupus erythematosus (SLE). Neutralization of BAFF activity was suggested as an additional therapeutic approach in SLE. To determine the effect of add-on Quinacrine (Qn) treatment on serum BAFF levels and the effect of this treatment on SLE disease activity index (SLEDAI), antidsDNA and anticardiolipin (aCL) antibody levels, we treated 29 stable SLE patients, who were maintained on prednisolone and hydroxychloroquine and in some on azathioprine (AZT), with additional Qn (100 mg/d) with an aim to further reduce disease activity. SLEDAI, antidsDNA, aCL antibodies and serum BAFF levels were assessed before and 3 months after the addition of Qn. Three months following Qn initiation, a reduction in SLEDAI was noticed in 19/29 patients (mean 8.8 +/- 2.3 to 3.3 +/- 1.5, P = 0.009), followed by reduction or discontinuation of prednisolone in all patients and the discontinuation of AZT in five patients. Serum BAFF levels were significantly reduced in 8/12 patients (mean 6.3 +/- 0.5 to 3.0 +/- 0.56 ng/ml P = 0.0001). This reduction was f...Continue Reading

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