Maternal NO2 exposure induces cardiac hypertrophy in male offspring via ROS-HIF-1α transcriptional regulation and aberrant DNA methylation modification of Csx/Nkx2.5

Maternal NO2 exposure induces cardiac hypertrophy in male offspring via ROS-HIF-1α transcriptional regulation and aberrant DNA methylation modification of Csx/Nkx2.5
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母体 NO2 暴露通过 ROS-HIF-1α 转录调节和 Csx/Nkx2.5 的异常 DNA 甲基化修饰诱导雄性后代心脏肥大

DOI:
10.1007/s00204-018-2166-3
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发表时间:
2018-02
影响因子:
6.1
通讯作者:
Sang Nan
Sang Nan
中科院分区:
医学2区
文献类型:
--
作者:
Zhang Yingying;Yan Wei;Ji Xiaotong;Yue Huifeng;Li Guangke;Sang Nan

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母亲暴露于二氧化氮(NO2)会导致婴儿先天性心脏病甚至成人心血管疾病的发病率和死亡率。然而,支持这些效应的实验证据不足,相关的调控机制也不清楚。在本研究中,我们的目的是确定母体NO2暴露是否会导致后代心脏肥大相关的后果,如果是这样,这些不良影响如何发生在出生后的心脏。结果表明,在小鼠中,母体NO2暴露导致雄性后代的心脏肥大。这种改变的表型伴随着心房利钠肽、B型利钠肽、骨形态发生蛋白10和β-肌球蛋白重链的表达增加以及心肌细胞损伤标志物的活性升高,包括血清中的谷氨酸-草酰乙酸转氨酶、乳酸脱氢酶和激酶肌酸磷酸激酶(CK-MB)。心肌特异性转录因子Csx/Nkx 2. 5在诱导心肌肥大和心肌细胞损伤中发挥重要作用,其作用与ROS-HIF-1α转录调控和DNA低甲基化修饰有关。
Maternal exposure to nitrogen dioxide (NO2) poses a risk for morbidity and mortality in infantile congenital heart diseases and even adult cardiovascular diseases. However, the experimental evidence supporting these effects is insufficient, and the related regulatory mechanisms are unknown. In the present study, we aimed to determine whether maternal NO2exposure causes cardiac hypertrophy-related consequences in offspring, and if so, how these adverse effects occur in the postnatal heart. The results indicate that in mice, maternal NO2exposure causes cardiac hypertrophy in male offspring. This altered phenotype was accompanied by increased expression of atrial natriuretic peptide, B-type natriuretic peptide, bone morphogenetic protein 10 and β-myosin heavy chain and elevated activities of cardiomyocyte injury markers, including serum glutamate-oxaloacetate transaminase, lactate dehydrogenase and kinases creatine phosphokinase (CK-MB) in serum. The cardiac-specific transcription factor Csx/Nkx2.5 played an important role in the induction of cardiac hypertrophy and cardiomyocyte injury, and the action was associated with ROS-HIF-1α transcriptional regulation and DNA hypomethylation modification.
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