Early-life seizures produce lasting alterations in the structure and function of the prefrontal cortex.

Early-life seizures produce lasting alterations in the structure and function of the prefrontal cortex.
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DOI:
10.1016/j.yebeh.2011.07.022
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发表时间:
2011-10
期刊:
Epilepsy & behavior : E&B
影响因子:
--
通讯作者:
Scott RC
Scott RC
中科院分区:
其他
文献类型:
--
作者:
Kleen JK;Sesqué A;Wu EX;Miller FA;Hernan AE;Holmes GL;Scott RC

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早期癫痫发作(ELS)与包括自闭症和ADHD在内的长期行为障碍有关,这表明额叶结构可能会受到永久性影响。我们测试是否ELS产生结构改变,在前额叶皮层(PFC)和损害PFC介导的功能,使用操作性任务的行为灵活性在大鼠。在出生后第1-10天暴露于75氟乙烷癫痫发作的成年大鼠在多个行为会话中与对照组相比表现出任务中的行为灵活性降低,测量为杠杆偏好不对称(p<0.001)和获得食物奖励的效率降低(p<0.05)。ELS大鼠的PFC厚度也有所增加(p<0.01),主要归因于第V层(p<0.01),细胞密度无差异。这些结构变化与杠杆偏好行为障碍相关(p<0.05)。这项研究表明,ELS的后果延伸到PFC,这可能有助于解释ELS后共病行为障碍的高患病率。
Early-life seizures (ELS) are associated with long-term behavioral disorders including autism and ADHD, suggesting that frontal lobe structures may be permanently affected. We tested whether ELS produce structural alterations in the prefrontal cortex (PFC) and impair PFC-mediated function using an operant task of behavioral flexibility in rats. Adult rats that had been exposed to 75 flurothyl seizures during postnatal days 1–10 showed decreased behavioral flexibility in the task compared to controls over multiple behavioral sessions, measured as a lever preference asymmetry (p<0.001) and a decreased efficiency of attaining food rewards (p<0.05). ELS rats also showed an increased thickness of the PFC (p<0.01), primarily attributed to layer V (p<0.01) with no differences in cell density. These structural changes correlated with lever preference behavioral impairments (p<0.05). This study demonstrates that the consequences of ELS extend to the PFC, which may help explain the high prevalence of comorbid behavioral disorders following ELS.
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