A&R:低剂量苯溴马隆在肾尿酸排泄不足痛风患者的疗效优势

2022-07-16 紫菀款冬 MedSci原创

在肾尿酸排泄不足型痛风患者中,低剂量苯溴马隆与低剂量非布索坦的疗效比较临床试验。

目的:导致痛风高尿酸血症的主要机制是肾尿酸排泄不足,然而,无论高尿酸血症的原因如何,标准的尿酸降低治疗(ULT)建议是一线黄嘌呤氧化酶抑制(XOI)。在这里,该研究对肾尿酸排泄不足的痛风进行了一线非滴定、低剂量苯溴马隆降尿酸治疗与XOI ULT,即低剂量非布索坦疗效比较临床试验

方法:一项前瞻性、随机、单中心、开放标记的男性痛风和肾尿酸排泄不足试验(定义为尿酸排泄分数<5.5%和尿酸排泄≤600毫克/天/1.73m2)。将196名受试者随机分为低剂量苯溴马隆每日25 mg(LDBen)或低剂量非布索坦每日20 mg(LDFeb),为期12周。所有参与者每天接受口服碳酸氢钠的尿液碱化。主要终点是达到目标血清尿酸(SU)<6 mg/dL的占比

结果:与LDFeb相比,LDBen组实现血清尿酸目标的人数更多(61% vs 32%,P<0.001)。两组之间的不良事件,包括痛风发作和尿石症没有差异,但LDFeb组转氨酶升高更多(LDBen 4% vs LDFeb 15%,P=0.008)。

结论:对于相对年轻和健康的肾排泄不足型痛风患者,低剂量苯溴马隆比低剂量非布索坦具有更大的血清尿酸降低功效。低剂量的苯溴马隆是一种安全有效的治疗方法,可以在没有中度慢性肾病的痛风患者中实现血清尿酸降低目标。

文献来源:

Yan F, Xue X, Lu J, et al. Superiority of low-dose benzbromarone to low-dose febuxostat in a prospective, randomized comparative effectiveness trial in gout patients with renal uric acid underexcretion [published online ahead of print, 2022 Jul 7]. Arthritis Rheumatol. 2022;10.1002/art.42266. doi:10.1002/art.42266

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