Efficacy of anakinra for refractory acute calcium pyrophosphate crystal arthritis
Efficacy of anakinra for refractory acute calcium pyrophosphate crystal arthritis
复制标题
DOI:
10.1016/j.jbspin.2012.01.010
复制
发表时间:
2012-12-01
期刊:
影响因子:
4.2
通讯作者:
Liote, Frederic
中科院分区:
文献类型:
--
作者:
Molto, Anna;Ea, Hang-Korng;Liote, Frederic
Acute synovitis induced by deposition of calcium pyrophosphate (CPP) and monosodium urate crystals involves interleukin-1 beta production and activation. The efficacy of blocking interleukin-1 beta activity (with an interleukin-1 receptor antagonist [anakinra] or interleukin-1 beta antibody) is well documented for gout attacks but has only been reported in two single-case reports of CPP crystal-induced acute arthritis. Here we report on five cases (four males, mean age 71 +/- 27) of CPP crystal-induced inflammatory arthritis refractory and/or intolerant to usual drug therapy and efficiently treated with anakinra. Diagnosis of CPP crystal-induced arthritis was confirmed by identification of crystals in synovial fluid. CPP crystal-induced oligo-arthritis (n = 4) and polyarthritis (n = 1) were refractory to conventional treatments, including nonsteroidal anti-inflammatory drugs, colchicine and steroids (systemic administration or intra-articular injection). After latent infection was ruled out, anakinra, 100 mg/day, was administered subcutaneously for 3 days. Four patients showed rapid clinical and biological responses at a mean of 3 days after treatment. Anakinra provided good joint pain relief (baseline 0-100mm visual analog scale score 60 +/- 17mm, outcome 10 +/- 10mm) and decreased serum C-reactive protein level (58 +/- 43 to 5 +/- 2 mg/L). Anakinra was well tolerated. One injection-site skin reaction was observed but no infection. Anakinra was effective and safe in this small series of patients with refractory arthritis due to acute CPP crystal deposition. (C) 2012 Societe francaise de rhumatologie. Published by Elsevier Masson SAS. All rights reserved.