Regulation of developing myelin sheath elongation by oligodendrocyte calcium transients in vivo.

Regulation of developing myelin sheath elongation by oligodendrocyte calcium transients in vivo.
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调节体内少突胶质细胞钙瞬时发育髓鞘伸长的调节。

DOI:
10.1038/s41593-017-0031-y
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发表时间:
2018-01
影响因子:
25
通讯作者:
Attwell D
Attwell D
中科院分区:
医学1区
文献类型:
--
作者:
Krasnow AM;Ford MC;Valdivia LE;Wilson SW;Attwell D

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目前尚不清楚动作电位如何调控少突胶质细胞的髓鞘形成。我们发现,在体内发育的少突胶质细胞中,神经元的活动提高了[Ca~(2+)]i,而髓鞘延长则被高频率的[Ca~(2+)]_i瞬变所促进,并被[Ca~(2+)]_i缓冲所阻止。鞘延长发生在[Ca~(2+)]i升高后约1小时。鞘缩短与低频率的[Ca~(2+)]_i瞬变有关,但与较长的[Ca~(2+)]_i爆发有关。因此,[Ca~(2+)]i控制髓鞘的发育。
How action potentials regulate myelination by oligodendrocytes is uncertain. We show that neuronal activity raises [Ca2+]i in developing oligodendrocytes in vivo, and that myelin sheath elongation is promoted by a high frequency of [Ca2+]i transients and prevented by [Ca2+]i-buffering. Sheath elongation occurs ~1 hour after [Ca2+]i elevation. Sheath shortening is associated with a low frequency of [Ca2+]i transients but with longer duration [Ca2+]i bursts. Thus, [Ca2+]i controls myelin sheath development.
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发表时间: 2000-05-11
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