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Arthritis Rheumatol:别嘌呤醇剂量增加对痛风骨侵蚀和尿酸盐体积的影响

2019-05-27 xiangting MedSci原创

这项研究目的是探讨痛风患者中,为了达到血清尿酸盐目标的别嘌呤醇剂量增加是否会影响通过DECT测量的骨侵蚀或尿酸单钠(MSU)晶体沉积。研究人员对一个为期两年的随机临床试验进行了成像研究,该试验在使用别嘌呤醇且SU≥0.36mmol/L的痛风患者中,比较了别嘌呤醇剂量直接增至血清尿酸盐(SU)目标vs.常规剂量1年,随后剂量增至目标(对照)。在基线、1年和2年随诊时获取足部DECT扫描和X光片(XR

这项研究目的是探讨痛风患者中,为了达到血清尿酸盐目标的别嘌呤醇剂量增加是否会影响通过DECT测量的骨侵蚀或尿酸单钠(MSU)晶体沉积。

研究人员对一个为期两年的随机临床试验进行了成像研究,该试验在使用别嘌呤醇且SU≥0.36mmol/L的痛风患者中,比较了别嘌呤醇剂量直接增至血清尿酸盐(SU)目标vs.常规剂量1年,随后剂量增至目标(对照)。在基线、1年和2年随诊时获取足部DECT扫描和X光片(XR,手和足)。对DECT扫描的骨侵蚀和尿酸盐体积进行评分。

87名参与者有可用的成对影像数据(45名对照,42名剂量增加)。2年时,与剂量增加组相比,对照组的CT侵蚀评分进展更多(对照组为+7.8%,剂量增加组为+1.4%,P随机化=0.015)。组间XR侵蚀或狭窄评分的变化没有差异。在两个随机组中都观察到DECT尿酸盐体积的减少。2年时,对照组SU<0.36mmol/L的参与者和剂量增加组的DECT尿酸盐体积减少(-27.6至-28.3%),而SU≥0.36mmol/L的对照组没有观察到尿酸盐体积减少(+1.5%,P尿酸*随机化=0.023)。

这些结果提供了证据表明,使用血尿酸靶标策略的长期降尿酸治疗可以影响痛风中的结构损伤并减少尿酸盐晶体沉积。

原始出处:

Nicola Dalbeth. Effects of allopurinol dose escalation on bone erosion and urate volume in gout: a dual energy CT imaging study of a randomized controlled trial. Arthritis Rheumatol. 13 May 2019.

本文系梅斯医学(MedSci)原创编译整理,转载需授权!

 


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