Dynamics of hippocampal neurogenesis in adult humans.

Dynamics of hippocampal neurogenesis in adult humans.
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成年人类海马神经发生的动力学。

DOI:
10.1016/j.cell.2013.05.002
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发表时间:
2013-06-06
期刊:
影响因子:
64.5
通讯作者:
Frisén J
Frisén J
中科院分区:
生物学1区
文献类型:
--
作者:
Spalding KL;Bergmann O;Alkass K;Bernard S;Salehpour M;Huttner HB;Boström E;Westerlund I;Vial C;Buchholz BA;Possnert G;Mash DC;Druid H;Frisén J

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成年海马神经元对啮齿动物的认知可塑性至关重要。有证据表明,成年人类的海马神经发生,尽管其程度是否足以具有功能意义一直受到质疑。我们通过测量基因组DNA中核弹试验产生的14C的浓度来评估人类海马细胞的产生,并提出了细胞周转动力学的综合模型。我们发现海马神经元的一个大亚群,占神经元的三分之一,是交换的对象。在成年人中,每天增加700个新神经元,相当于每年更新部分中1.75%的神经元的周转率,在衰老过程中会适度下降。我们的结论是,神经元的生成贯穿整个成年期,中年人和小鼠的速率相当,这表明成年海马神经发生可能有助于人类大脑功能。
Adult-born hippocampal neurons are important for cognitive plasticity in rodents. There is evidence for hippocampal neurogenesis in adult humans, although whether its extent is sufficient to have functional significance has been questioned. We have assessed the generation of hippocampal cells in humans by measuring the concentration of nuclear bomb test-derived 14C in genomic DNA and we present an integrated model of the cell turnover dynamics. We found that a large subpopulation of hippocampal neurons, constituting one third of the neurons, is subject to exchange. In adult humans, 700 new neurons are added per day, corresponding to an annual turnover of 1.75% of the neurons within the renewing fraction, with a modest decline during aging. We conclude that neurons are generated throughout adulthood and that the rates are comparable in middle aged humans and mice, suggesting that adult hippocampal neurogenesis may contribute to human brain function.
DOI: 10.1038/3305
发表时间: 1998-11-01
期刊: NATURE MEDICINE
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