Arthritis Rheumatol:诊断时的内皮和炎性生物标志物特征可以预测青少年皮肌炎的治疗反应

2020-03-06 xiangting MedSci原创

这项研究使用血清生物标志物证实了新发JDM的异质性。半乳凝素-9、CXCL10、TNFR2和半乳凝素-1较高的患者可能对常规治疗反应欠佳,并可能从更深入的监测和/或治疗中受益。

青少年皮肌炎(JDM)是一种异质性的全身免疫介导血管病,这项研究目标是:1)确定能够反映诊断时疾病严重程度的炎症/内皮功能障碍相关性生物标志物特征;2)确定生物标志物特征是否可以预测治疗反应。

通过多重技术,测定来自两个独立队列JDM初治患者(n=30/n=29)血清中的39种标志物,这些标志物均与内皮激活、功能障碍和炎症相关。通过无监督分层聚类对数据进行分析,对多项测试进行校正的非参数检验,治疗持续时间的分析使用Kaplan-MeierCox比例风险模型。通过线印迹法测定肌炎特异性抗体(MSA)。

严重的血管病变与ICAM-1低(rs=0.465p=0.0111)和内皮因子高(rs=-0.67p<0.0001)相关。对所有标志物的发现队列进行无监督聚类产生了两个不同的患者类别:较小的类别(n=8),具有较高水平的CXCL13CCL19、半乳凝素-9CXCL10TNFR2和半乳凝素-1FDR<0.0001),而其肌肉和整体疾病活动性较高(p<0.05)。在验证队列中,证实了半乳凝素-9CXCL10TNFR2和半乳凝素-1与整体疾病活动性的相关性(rs=0.40-0.52p<0.05)。使用这4种标志物对患者进行分层,可确定出症状较重,在前3个月内有需要更深入治疗风险的患者(64.7vs.34.1%,p=0.0437)。半乳凝素-9CXCL10TNFR2可以预测治疗持续时间更长(p<0.05)。基于生物标志物的分类与MSA血清型没有明显相关性。

这项研究使用血清生物标志物证实了新发JDM的异质性。半乳凝素-9CXCL10TNFR2和半乳凝素-1较高的患者可能对常规治疗反应欠佳,并可能从更深入的监测和/或治疗中受益。

原始出处:

Judith Wienke. Endothelial and inflammatory biomarker profile at diagnosis reflects clinical heterogeneity of juvenile dermatomyositis and is prognostic for response to treatment in two independent cohorts. Arthritis Rheumatol. February 2020.

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    2020-03-08 zhaojie88
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波兰尼古拉斯哥白尼大学Collegium Medicum医学院眼科学系的Urbaniak D近日在Med Sci Monit杂志上发表了一篇文章,他们的研究评估了假性剥脱综合征(PEX)患者中角膜和晶状体前囊的特定层的光密度。

JAHA:HIV患者血清PCSK9水平与冠脉内皮功能呈负相关

HIV阳性病人患冠心病的风险会增高,但具体机制尚未阐明。本研究纳入分析了48例接受抗病毒治疗的无冠心病的HIV阳性患者,以及15例年龄和低密度脂蛋白胆固醇匹配的正常对照,对其进行磁共振检查以评估冠脉内皮功能,并抽取血样检测血清PCSK9水平和血管标志物水平。分析结果显示,HIV阳性患者的血清PCSK9水平高出正常对照65%(P<0.0001),且HIV患者的冠脉内皮功能明显降低,并与血清PC

JACC:一种新的由红细胞介导的糖尿病致内皮功能不全机制

心血管疾病是2型糖尿病(T2DM)的主要风险之一。既往研究报道了红细胞(RBCs)在心功能调节中的重要作用,T2DM患者的RBC功能有所改变,且精氨酸酶的活性有所增高。本研究的目的旨在证明T2DM患者的红细胞可以通过上调精氨酸酶水平引起内皮功能不全。本研究对T2DM患者和年龄匹配的对照的红细胞进行了分离,并与大鼠主动脉或非糖尿病患者的乳腺内动脉血管共培养。分析结果显示,T2DM患者的红细胞精氨酸酶

J Periodontol:健康人与慢性牙周炎、心肌梗死患者内皮功能的比较

重度牙周病患者内皮细胞会有损害,内皮功能的破坏有助于动脉粥样硬化斑块的形成,进而可能成为冠状动脉疾病的风险。本研究的目的是通过血管舒张功能(FMD)评估牙周健康和疾病中的内皮功能。

JACC:早期粥样硬化患者的内皮功能不良与低内皮切变应力相关

局部的血液动力学因素与粥样硬化斑块的发生和发展呈明显相关。本研究的目的旨在评估低内皮切变应力(ESS)和微血管与心外膜内皮功能障碍与早期动脉粥样硬化患者的相关性。本研究纳入了65名非阻塞性冠心病患者(平均年龄52 ± 11岁),对其微血管与心外膜内皮功能进行了评估,通过计算机流体力学对重建的冠脉进行了ESS的评估。分析结果显示,与微血管功能正常的冠脉相比,微血管功能不良的冠脉ESS更低(平均值:1