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JAMA Dermatol:特定配方的维A酸前体可有效治疗中度至重度面部光损伤

2022-08-29 sunshine MedSci原创

维A酸前体(视黄醇及其酯类衍生物)的外用制剂广泛销售,并可能提供与维A酸类似的治疗光老化的临床益处。但是,潜在的机制尚未清楚。

维A酸前体(视黄醇及其酯类衍生物)的外用制剂广泛销售,并可能提供与维A酸类似的治疗光老化的临床益处。但是,潜在的机制尚未清楚。近日,发表于JAMA Dermatol的一项研究评估了外用维A酸前体(TTP)与维A酸(RA)治疗中度至重度面部光损伤的临床疗效,并确定与临床疗效相关的潜在生物标志物。

这项随机、双盲、单中心、平行臂研究于2010年11月至2011年12月在一个学术性转诊中心进行,纳入了24名中度至重度面部光损伤患者,数据分析于2012年1月至2021年12月进行。每天局部使用0.02% RA或1.1% TTP配方,含有视黄醇、醋酸视黄醇和棕榈酸视黄醇,持续24周。通过皮肤科医生的评估和患者报告的结果进行光老化和耐受性评估。通过实时定量聚合酶链反应评估治疗区域的活体组织的目标基因表达。

结果,最终共有20名白人妇女接受了分析(9人随机接受TTP治疗,11人随机接受RA治疗)。在第24周,接受TTP与RA治疗的患者在Griffiths photoaging评分方面没有显著差异(中位数,4 vs. 5)(TTP-RA差异:-1;95% CI,-2至1;P = 0.27)。接受TTP治疗的患者红斑发生率比RA低6倍(11% vs 64%)(TTP-RA差异:-0.53;95%CI,-0.88到-0.17;P = 0.01)。靶基因分析显示,CRABP2信使RNA(mRNA)有明显的诱导作用(证实维甲酸受体信号),但在TTP治疗的样本中,procollagen I或MMP1/3/9 mRNA没有明显变化。相反,编码IV型胶原酶的MMP2 mRNA在TTP治疗的样本中明显减少(第24周-基线mRNA差异:-5;96%CI,-33至1.6;P =0 .02),MMP2的变化与细小皱纹的变化密切相关(r = 0.54;95%CI,0.12至0.80;P = 0.01)。有趣的是,基线时期皱纹明显的患者表现出更大的改善(r = -0.74;95% CI,-0.89至-0.43;P < 0.001)。这一趋势反映在MMP2 mRNA上,最初的表达强烈预测了随后的变化(r = -0.78;95% CI,-0.89至-0.43;P < 0.001)。

综上所述,在这项随机临床试验中,这种特定配方的TTP和曲安奈德0.02%之间的疗效没有明显差异。然而,这些机理研究的结果强调了MMP2可能是维甲酸类药物在光老化中疗效的介导因素。

原始出处:

Anna L Chien, et al., Biomarkers of Tretinoin Precursors and Tretinoin Efficacy in Patients With Moderate to Severe Facial Photodamage: A Randomized Clinical Trial. JAMA Dermatol. 2022 Aug 1;158(8):879-886. doi: 10.1001/jamadermatol.2022.1891.

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    2023-06-09 膀胱癌
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    2022-08-23 肿瘤克星

    JAMA上文章都是顶级的,谢谢梅斯及时上新

    0

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