Serum amyloid A3 is pro-atherogenic.

Serum amyloid A3 is pro-atherogenic.
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DOI:
10.1016/j.atherosclerosis.2017.11.011
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发表时间:
2018-01
期刊:
影响因子:
5.3
通讯作者:
Tannock LR
Tannock LR
中科院分区:
医学2区
文献类型:
--
作者:
Thompson JC;Wilson PG;Shridas P;Ji A;de Beer M;de Beer FC;Webb NR;Tannock LR

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血清淀粉样蛋白A(SAA)可预测心血管事件。SAA的过度表达增加动脉粥样硬化的发展,然而,缺乏两个小鼠急性期亚型,SAA 1.1和SAA 2.1,对动脉粥样硬化没有影响。SAA 3在人类中是假基因,但在小鼠中是表达的急性期同种型。这项研究的目的是确定SAA 3是否影响小鼠的动脉粥样硬化。ApoE−/−小鼠用作所有研究的模型。SAA 3通过腺相关病毒过表达或使用反义寡核苷酸方法抑制。与对照小鼠相比,SAA 3的过表达导致动脉粥样硬化病变面积增加4倍(p=0.01)。抑制SAA 3可降低SAA 1.1和SAA 2.1基因缺陷小鼠的动脉粥样硬化(p<0.0001)。SAA 3增强小鼠动脉粥样硬化。我们的研究结果解决了文献中的一个悖论,并支持广泛的流行病学数据,SAA是促动脉粥样硬化的。
Serum amyloid A (SAA) predicts cardiovascular events. Overexpression of SAA increases atherosclerosis development; however, deficiency of two of the murine acute phase isoforms, SAA1.1 and SAA2.1, has no effect on atherosclerosis. SAA3 is a pseudogene in humans, but is an expressed acute phase isoform in mice. The goal of this study was to determine if SAA3 affects atherosclerosis in mice. ApoE−/− mice were used as the model for all studies. SAA3 was overexpressed by an adeno-associated virus or suppressed using an anti-sense oligonucleotide approach. Over-expression of SAA3 led to a 4-fold increase in atherosclerosis lesion area compared to control mice (p=0.01). Suppression of SAA3 decreased atherosclerosis in mice genetically deficient in SAA1.1 and SAA2.1 (p<0.0001). SAA3 augments atherosclerosis in mice. Our results resolve a previous paradox in the literature and support extensive epidemiological data that SAA is pro-atherogenic.
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