PNAS:母亲饮食有多重要?“吃不对”对后代影响巨大……

2018-07-05 风铃 生物探索

对孕妇来说,保证营养充足是最常被提醒的注意事项之一。近日,发表在PNAS上的一项新研究再次证实了孕期“合理饮食”的重要性。

在6月25日发表的题为“Mouse maternal protein restriction during preimplantation alone permanently alters brain neuron proportion and adult short-term memory”的研究中,来自英国南安普顿大学的科学家们证实,怀孕早期母亲饮食中蛋白质不足会对后代大脑发育产生持久的影响。

具体来说,由Sandrine Willaime-Morawek博士和Tom Fleming教授带领的团队首次证实,在小鼠怀孕的头些天(着床前期,pre-implantation period),母亲营养不良不仅对后代早期大脑发育不利,还会影响成年时的记忆。

众所周知,怀孕早期母亲的饮食对胎儿的发育至关重要,如果饮食不佳,会增加后代在以后生活中的患病(如心血管疾病、精神分裂症)风险。

事实上,先前已有研究表明,怀孕和哺乳期间母亲饮食中蛋白质减少会损害婴儿的大脑,对协调和认知功能产生持久的影响。但在着床前期母亲营养对大脑发育的重要性一直是未知的。

该研究中,利用细胞培养和小鼠模型,科学家们发现,在着床前期,母亲的低蛋白饮食会减少神经干细胞的产生,从而导致神经细胞形成的时机和数量发生错误,最终使得后代在成年时短期记忆较差。

Willaime-Morawek博士说:“我们的初步研究表明,在小鼠模型中,怀孕早期母亲营养不良会对大脑发育以及成年记忆产生不利影响。同时,我们也证实了着床前期是决定成年表型的关键。”

总结来说,这篇论文表明,仅在着床前期限制小鼠母亲饮食中的蛋白质就能永久性地改变大脑神经元比例以及成年时的短期记忆。

原始出处:

oanna M. Gould, Phoebe J. Smith, Chris J. Airey, et al. Mouse maternal protein restriction during preimplantation alone permanently alters brain neuron proportion and adult short-term memory. PNAS June 25, 2018. 201721876; published ahead of print June 25, 2018. https://doi.org/10.1073/pnas.1721876115.

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    2018-10-20 docwu2019
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    2018-07-07 flysky120

    饮食太重要了

    0

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    2018-07-05 1371f63f74m

    学习了!

    0

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    2018-07-05 我是双专业

    学习学习

    0

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    2018-07-05 wzb521zf

    一起学习学习

    0

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