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寨卡病毒感染增加了小鼠大脑中的血管新素I转化酶活性

William Y Oyadomari¹, Raissa R Christoff², João V Nani¹

¹Department of Pharmacology, Escola Paulista de Medicina (EPM), Universidade Federal de São Paulo (UNIFESP), SP, Brazil.

|July 3, 2024

概括

遗传性寨卡病毒综合征 (CZS) 是一个全球性问题. 这项研究发现,在寨卡病毒 (ZIKV) 感染期间,大脑中的抗胰岛素I转化酶 (ACE) 活性增加,这种情况通过干扰素β (IFNβ) 治疗而逆转.

科学领域:

神经病毒学神经病毒学
免疫学免疫学免疫学
酶学是一种酶学.

背景情况:

遗传性寨卡病毒综合征 (CZS) 构成了与小头症相关的全球健康挑战.
寨卡病毒 (ZIKV) 和登革热病毒 (DENV) 具有相似之处,使诊断和管理复杂化.
氨I转化酶 (ACE) 在中枢神经系统 (CNS) 中在黄病毒感染期间的作用基本上是未知的.

研究的目的:

为了研究ZIKV和DENV感染期间ACE在大脑中的活性.
为了确定ACE活性是否受到小鼠ZIKV或DENV感染的调节.
评估干扰素β (IFNβ) 对ZIKV感染大脑中的ACE活性的影响.

主要方法:

在感染ZIKV,DENV或对照 (MOCK) 的小鼠大脑中对ACE活性进行比较分析.
在ZIKV注射脑内静脉 (ICV) 和腹腔内静脉 (IP) 后评估ACE活性.
在接受IFNβ治疗的ZIKV感染小鼠中评估ACE活性.

主要成果:

与MOCK对照组相比,ZIKV感染显著增加大脑ACE活动约30%.
DENV感染并没有改变大脑的ACE活动.
在ZIKV感染的小鼠中,IFNβ治疗恢复了高ACE活性,达到与对照组相比较的水平.
特别是在ICV ZIKV给药后观察到ACE活性增加,而不是IP.

结论:

与DENV不同,ZIKV感染与中枢神经系统ACE活性增加有关.
大脑中的这种ACE活性调节似乎是ZIKV的特征,可能与病毒进入中枢神经系统有关.
IFNβ治疗显示出减轻ZIKV诱导的大脑ACE活性变化的潜力.

关键词:

酶活性的酶活动.弗拉维病毒 (flavivirus) 是一种病毒.干扰素干扰素干扰素类酸酶的存在寨卡病毒寨卡病毒

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