Early and Bi-hemispheric seizure onset in a rat glioblastoma Multiforme model.

Early and Bi-hemispheric seizure onset in a rat glioblastoma Multiforme model.
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DOI:
10.1016/j.neulet.2021.136351
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发表时间:
2022-01-01
影响因子:
2.5
通讯作者:
Wang Y
Wang Y
中科院分区:
医学4区
文献类型:
--
作者:
Hu S;Kao HY;Yang T;Wang Y

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GBM是最危及生命的神经系统疾病,每年发病率约为每10万人5例,中位生存期不到15个月。癫痫发作是40%-45%的GBM患者的第一个临床症状,其致痫机制知之甚少,主要是由于开发临床相关动物模型的挑战和未知的潜伏期。在这项研究中,我们使用连续视频EEG监测来检测CRISPR-IUE GBM大鼠模型中最早的发作间期和发作事件,该模型与在人类中观察到的那些具有相同的病理和临床特征。据我们所知,我们首次发现,发作间期癫痫样放电出现在出生后早期的几周内,第一次发作事件发生在出生后第四周。我们还发现GBM动物显示出独立的双半球癫痫事件,表明广泛的电路失调。总之,我们的工作在高度临床相关的GBM动物模型中确定了致癫痫网络的时间和空间框架,为分子,细胞和电路水平的机制研究铺平了道路。
GBM is the most life-threatening neurological disease with annual incidence of ~5 cases per 100,000 people and a median survival of less than 15 months. Seizures are the first clinical symptoms in 40%−45% of patients with GBM and its epileptogenic mechanisms are poorly understood, largely due to the challenge to develop a clinically-relevant animal model and the unknown latent period. In this study, we used continuous video-EEG monitoring to detect the earliest interictal and ictal events in a CRISPR- IUE GBM rat model that shares pathological and clinical features with those observed in humans. To our best knowledge, we showed for the first time that interictal epileptiform discharges emerged during early postnatal weeks and the first ictal event occurred during the fourth postnatal week. We also showed GBM animals showed independent bi-hemispheric epileptogenic events, suggesting a widespread circuitry dysregulation. Together, our work identified the temporal- and spatial frame of epileptogenic network in a highly clinically-relevant GBM animal model, paving ways for mechanistic studies at molecular, cellular and circuitry levels.
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