Genetics of leukocyte telomere length and its role in atherosclerosis.

Genetics of leukocyte telomere length and its role in atherosclerosis.
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DOI:
10.1016/j.mrfmmm.2011.05.001
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发表时间:
2012-02-01
影响因子:
2.3
通讯作者:
Aviv, Abraham
Aviv, Abraham
中科院分区:
医学4区
文献类型:
--
作者:
Aviv, Abraham

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人类在白细胞端粒长度(LTL)中表现出很大的个体间差异,该变化受遗传,性别,种族/种族,受孕时的父亲年龄和环境暴露的影响。 LTL动力学(出生LTL及其依赖年龄的损耗)在造血干细胞(HSC)中镜像端粒动力学。 LTL出生时显然是LTL在整个人类寿命中的主要决定因素,因此,在出生时赋予短(或长)LTL的个体可能会在生活后以后的LTL短(或长)LTL。因此,短LTL与动脉粥样硬化的关联以及老年人的生存率降低可能与短期LTL,加速依赖年龄的LTL损耗有关或两者兼而有之。这些关联的基础机制仍然没有很好地理解,但部分源于控制端粒维持和HSC复制速率的遗传因素。
Humans display a large inter-individual variation in leukocyte telomere length (LTL), which is influenced by heredity, sex, race/ethnicity, paternal age at conception and environmental exposures. LTL dynamics (birth LTL and its age-dependent attrition thereafter) mirror telomere dynamics in hematopoietic stem cells (HSCs). LTL at birth is evidently a major determinant of LTL throughout the human lifespan, such that individuals endowed with short (or long) LTL at birth probably have short (or long) LTL later in life. Therefore, the associations of short LTL with atherosclerosis and with diminished survival in the elderly may relate to short birth LTL, accelerated age-dependent LTL attrition, or both. The mechanisms underlying these associations are still not well understood, but they stem in part from genetic factors in control of telomere maintenance and the rate of HSC replication.
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