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首页> 外文期刊>The journals of gerontology.Series A. Biological sciences and medical sciences >Pregnancy at Advanced Maternal Age Affects Behavior and Hippocampal Gene Expression in Mouse Offspring
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Pregnancy at Advanced Maternal Age Affects Behavior and Hippocampal Gene Expression in Mouse Offspring

机译:先进产妇年龄的妊娠会影响小鼠后代的行为和海马基因表达

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There is growing evidence that advanced maternal age is a risk factor for neurological and neuropsychiatric disorders in offspring. However, it remains unclear whether the altered brain programming induced by advanced maternal age is mediated by pre- or postnatal factors. Here, a mouse model was used to investigate whether pregnancy at advanced age may provoke behavioral and brain gene expression changes in offspring. Swiss Albino mice conceived by 3-month-old males and either 15-18-month-old (n = 11) or 3-month-old control females (n = 5), were delivered by cesarean section, fostered after birth by 3-month-old dams and subjected to a battery of behavioral tests. Furthermore, genome-wide mRNA expression was analyzed in the hippocampi of 4-month-old males offspring using microarrays. Offspring conceived by old mothers exhibited increased ultrasound vocalization activity during separation from the foster mother, increased anxiety-like behaviors in adult life, and altered patterns of hippocampal gene expression, compared to controls. These effects were not reversed by the postnatal maternal care provided by the young foster mothers, suggesting that the altered brain programming is already established at birth, consistent with prenatal effects related to maternal aging.
机译:越来越多的证据表明先进的产妇年龄是后代神经系统和神经精神疾病的危险因素。然而,仍然目前尚不清楚通过前期或产后因素介导的先进孕产妇年龄的改变的脑编程是否介导。在这里,使用小鼠模型来研究晚期怀孕是否可以引发后代的行为和脑基因表达的变化。由3个月大的男性和15-18个月大(n = 11)或3个月历史的女性(n = 5)构思的瑞士白化小鼠被剖宫产,出生后培育3 - 旧水坝并经受电池的行为测试。此外,在使用微阵列的4个月大的雄性后代的海马分析了基因组 - 宽mRNA表达。与对照相比,旧母亲认为,旧母亲的后代在与培养母亲的分离过程中表现出增加的超声声发作活动,增加了成年生命中的焦虑性,以及改变的海马基因基因表达模式。年轻福斯特母亲提供的后产母护理并未逆转这些效果,这表明改变的脑编程已经在出生时已经建立,与孕产妇老龄化有关的产前效应一致。

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