Arthritis Rheumatol:NLRP3中低外显率变体的临床和分子表型

2017-07-18 xiangting MedSci原创

低外显率NLRP3变体患者表现出明显的临床表型和包括IL-1β和非IL-1β介导的炎症通路活化的中间生物表型。

Cryopyrin相关性周期综合征(CAPS)是由NLRP3基因获得性功能突变引起的,可导致白介素-1β(IL-1β)过度释放和全身炎症。虽然致病性NLRP3变体表型已被很好地描述,但是低外显率NLRP3变体代表了重要的临床挑战。这项研究的目的是确定低外显率NLRP3变体患者的临床表型、体外生物表型和抗IL-1治疗的效果。

2012年5月至2013年5月间在7个中心入组有症状的低外显率NLRP3变体患者。对照组是有已知致病性NLRP3变体的患者。记录临床表现和CAPS炎症标记物。进行包括半胱天冬酶-1活性,NF-κB释放,细胞死亡和IL-1β释放的炎性体激活的功能测定。评价IL-1的治疗效果。进行低外显率和致病性NLRP3变体间的比较。

研究包括45例患者,21例为女性(47%); 26/45(58%)为儿童。NLRP3低外显率变体:Q703K(n = 19),R488K(n = 6)和V198M(n = 20)。对照组:28例为致病性NLRP3变体。低外显率NLRP3变体患者发热次数(76%)和胃肠道症状(73%)明显更多;眼病,听力丧失和肾脏受累较少见。与野生型和致病性NLRP3变体相比,功能性炎症试验发现了低外显率NLRP3变体中的中间表型。所有接受治疗患者均对IL-1抑制剂有反应,50%的患者有完全反应。

低外显率NLRP3变体患者表现出明显的临床表型和包括IL-1β和非IL-1β介导的炎症通路活化的中间生物表型。

原始出处:

JB Kuemmerle-Deschner,et al. Clinical and molecular phenotypes of low-penetrance variants in NLRP3: Diagnostic and therapeutic challenges. Arthritis Rheumatol.10 July 2017.

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    2017-07-20 yuandd
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    2017-07-20 vera_1207

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