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线粒体膜尚基本完整,髓鞘轻度崩解,游离核蛋白体多。 There was a mild breakdown of myelin and many free ribosomes. | ||
大鼠大脑及小脑髓鞘轻度变性,但未见典型脱髓鞘改变。 Mild myelinic degeneration was present in both cerebrum and cerebellum, and no typical demyelination was seen. | ||
与电线四周围的橡胶绝缘层相类似,髓鞘环绕着发送信息的轴突,保护和加快着电脉冲。 Like rubber insulation around electrical wires, myelin wraps around message-sending axons, protecting and speeding electrical impulses. | ||
髓鞘化的外层能够提高轴突的传输速度,但它也限制了轴突上新的分支生长。 While a myelin coating greatly accelerates an axon's bandwidth, it also inhibits the growth of new branches from the axon. | ||
如早先提到的,这些区域是最后停止髓鞘(大脑中的白色物质,能提高信息传输速度)化的。 As noted earlier, these areas are the last to lay down the fatty myelin insulation-the brain's white matter-that speeds transmission. | ||
在老鼠实验中,使用人类的细胞,显示了用这种方式注视少突胶质细胞确实能帮助修复髓鞘并重建神经细胞传递信号的能力。 Tests in rats, using human cells, have shown that oligodendrocytes injected this way can indeed help repair myelin sheaths and restore the ability of nerve cells to carry signals. | ||
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