Dynamics of hippocampal neurogenesis in adult humans.
Dynamics of hippocampal neurogenesis in adult humans.
复制标题
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
中科院分区:
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
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.
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DOI:
10.1073/pnas.96.10.5768
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