JACL:TRPV1拮抗剂Asivatrep用于局部治疗特应性皮炎

2021-12-23 医路坦克 MedSci原创

在青少年和成人中,使用Asivatrep乳膏治疗可以显著和持续地缓解与AD相关的体征和瘙痒,并具有可接受的安全性。结果表明,Asivatrep乳膏可能是治疗AD的一种新颖有效的外用药物。

       特应性皮炎(AD)是一种慢性炎症性瘙痒性皮肤病,周期性发作,在儿童和成人中的患病率分别约为25%和10%。遗传和环境因素都被认为是AD进展的危险因素。重要的是,AD的病理生理是复杂的和多因素的,涉及T辅助2型细胞介导的免疫反应、IgE介导的超敏反应和表皮屏障功能障碍的改变。目前,美国食品和药物管理局(FDA)已经批准了3类AD的局部治疗:局部皮质类固醇(TCSs)、局部钙调神经磷酸酶抑制剂(TCI)和一种磷酸二酯酶抑制剂。特别是,长期使用TCSs可能会导致皮肤不良反应,如皮肤变薄和毛细血管扩张。TCIs通常会在应用部位引起刺激症状,如灼热和刺痛,特别是在治疗的初始阶段,而且由于关于可能的癌症风险警告,患者和医生不愿这样做。

      瞬时受体电位香草样V亚家族成员1(TRPV1)是一种非选择性阳离子通道,表达于角质形成细胞、肥大细胞和皮肤感觉神经,表明其在皮肤生理和疾病中起重要作用。TRPV1参与炎症发病机制,是AD患者组胺非依赖性和依赖性瘙痒的关键下游信号分子。轴突反射性红斑伴随瘙痒是通过TRPV1控制神经肽的释放而发生的。因此,抑制TRPV1可能成为治疗AD的潜在治疗靶点。

      Asivatrep(PAC-14028,C21H22F5N3O3S)乳膏(1.0%)是一种非甾体类TRPV1拮抗剂,设计用于治疗轻到中度的AD。在大鼠和小鼠的临床前分析显示,Asivatrep是非致癌的,在抑制AD样皮炎方面有效。随后,在8周以上的轻度到中度AD的成人患者中进行了2期临床试验(临床试验.Government NCT02757729)。在该试验中,3种不同浓度(0.1%、0.3%和1.0%)的asivatrep与赋形剂乳膏进行了比较。在改善AD症状和体征方面,1.0%的asivatrep优于赋形剂乳膏。连续8周每天两次使用阿昔洛普也有很好的安全性,与使用药物相比,与治疗相关的不良事件发生率要低得多。

     目前的3期研究调查了1.0%Asivatrep乳膏对12岁或12岁以上轻、中度特应性皮炎患者的疗效和安全性,为期8周。

     方法:在这项3期双盲、赋形剂对照研究中,年龄>12岁的轻中度特应性皮炎患者入选,随机分成2:1给1.0% Asivatrep或赋形剂组,每天两次,共8周(N5240)。主要终点是研究人员的整体评估分数(IGA)在一周内为0或1的患者的比例

     结果:第8周时,服用asivatrep组的患者(36.0%)的IGA评分为0或1的患者明显多于赋形剂组(12.8%)(P<0.001);与基线评分相比,IGA评分改善>2分的患者明显更多(20.3%对7.7%;P5.01)。第8周时,Asivatrep组和赋形剂组湿疹面积和严重程度指数(EASI)评分的平均下降百分比分别为44.3%和21.4%(P<0.001)。与赋形剂组相比,接受Asivatrep治疗的患者显著更多地经历了至少50%、75%和90%的EASI改善。第8周瘙痒视觉模拟评分的平均6SD变化:Asivatrep组为22.362.4分,赋形剂组为21.562.4分(P5.02)。没有重大安全问题的报道。

     总而言之,在青少年和成人中,使用Asivatrep乳膏治疗可以显著和持续地缓解与AD相关的体征和瘙痒,并具有可接受的安全性。结果表明,Asivatrep乳膏可能是治疗AD的一种新颖有效的外用药物。

 

 

文献来源: Park CW,  Kim BJ,  Lee YW, Asivatrep, a TRPV1 antagonist, for the topical treatment of atopic dermatitis: A phase III, randomized, vehicle-controlled study (CAPTAIN-AD).J Allergy Clin Immunol 2021 Oct 01;

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    2021-12-24 chg122
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    2021-12-23 seminni

    jijgpei

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    2021-12-23 查查佳佳

    应性皮炎(AD)是一种慢性炎症性瘙痒

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特应性皮炎(AD)与心理社会紊乱相关,如抑郁、焦虑和自杀意念。结果表明,临床症状越严重,抑郁症状报告越强,而生活质量损害和AD症状频率与抑郁症状密切相关。