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JCEM:HtrA4与早发型子痫前期

2015-05-13 MedSci MedSci原创

人类HtrA4表达仅限于胎盘,早发型子痫前期患者中其表达明显上调,并且高水平的HtrA4导致内皮功能障碍。子痫前期(PE),妊娠特异性疾病,其发生与血管内皮功能紊乱和毛细血管渗漏密切相关,该疾病严重威胁到母儿健康,是导致母儿发病率和死亡率的潜在危险因素。子痫前期(PE)可以分为早发型(<34 周孕)和晚发型(>34 周孕),两种类型在临床表现和病理上都有很大区别。检测早发型子痫前期和晚

人类HtrA4表达仅限于胎盘,早发型子痫前期患者中其表达明显上调,并且高水平的HtrA4导致内皮功能障碍。

子痫前期(PE),妊娠特异性疾病,其发生与血管内皮功能紊乱和毛细血管渗漏密切相关,该疾病严重威胁到母儿健康,是导致母儿发病率和死亡率的潜在危险因素。子痫前期(PE)可以分为早发型(<34 周孕)和晚发型(>34 周孕),两种类型在临床表现和病理上都有很大区别。

检测早发型子痫前期和晚发型子痫前期患者胎盘和其他人体组织中丝氨酸蛋白酶HtrA4表达情况,探究正常孕妇和子痫前期孕妇中血清HtrA4浓度,调查高水平的HtrA4对内皮完整性和功能的影响。

研究者通过微阵列数据分析和RT-PCR技术对人体胎盘、其他人体组织和细胞系进行HtrA4表达情况的检测。通过ELISA检测血清HtrA4浓度。通过体外内皮管和渗透性试验分析对孕妇脉管系统中过多的HtrA4循环造成的潜在影响。

研究结果显示,人类HtrA4表达仅限于胎盘,早发型子痫前期患者中其表达明显上调,但是该上调并不见于晚发型子痫前期患者。正常妊娠孕妇血清HtrA4浓度在早孕期和中孕期快速增加,然后基本保持不变。早发型子痫前期孕妇血清HtrA4浓度明显高于按照孕龄与之匹配的对照组,但是该结果并不见于晚发型子痫前期患者。在细胞模型中,高水平的HtrA4干扰了内皮细胞管形成,并且其渗透率存在剂量依赖的方式,这可能与联结蛋白和微管组织的改变有关。

研究结果表明,HtrA4只在早发型子痫前期孕妇中出现特异性改变,因此可以作为新奇的胎盘特异性的丝氨酸蛋白酶,其会导致内皮功能障碍和疾病的发展。

原始出处:

Singh H, Zhao M, Chen Q, et al. Human HtrA4 expression is restricted to the placenta, significantly up-regulated in early-onset preeclampsia and high levels of HtrA4 cause endothelial dysfunction. J Clin Endocrinol Metab. 2015 : jc20143969.

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    2015-05-17 smallant2015
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    2015-05-22 achengzhao
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    2015-11-30 bsmagic9140
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    2015-05-17 huaxipanxing

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    2015-05-15 yahu

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