首页> 外文期刊>The European Journal of Neuroscience >Decreased BDNF signalling in transgenic mice reduces epileptogenesis.
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Decreased BDNF signalling in transgenic mice reduces epileptogenesis.

机译:转基因小鼠中BDNF信号传导减少会降低癫痫发生。

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摘要

Brain derived neurotrophic factor (BDNF) has been suggested to be involved in epileptogenesis. Both pro- and antiepileptogenic effects have been reported, but the exact physiological role is still unclear. Here, we investigated the role of endogenous BDNF in epileptogenesis by using transgenic mice overexpressing truncated trkB, a dominant negative receptor of BDNF. After induction of status epilepticus (SE) by kainic acid, the development of spontaneous seizures was monitored by video-EEG system. Hilar cell loss, and the number of neuropeptide Y immunoreactive cells were studied as markers of cellular damage, and mossy fibre sprouting was investigated as a plasticity marker. Our results show that transgenic mice had significantly less frequent interictal spiking than wild-type mice, and the frequency of spontaneous seizures was lower. Furthermore, compared to wild-type animals, transgenic mice had less severe seizures with later onset and mortality was lower. In contrast, no differences between genotypes were observed in any of the cellular or plasticity markers. Our results suggest that transgenic mice with decreased BDNF signalling have reduced epileptogenesis.
机译:脑源性神经营养因子(BDNF)已被建议参与癫痫的发生。已经报道了促癫痫作用和抗癫痫作用,但是确切的生理作用仍不清楚。在这里,我们通过使用过表达截短的trkB(BDNF的主要负受体)的转基因小鼠,研究了内源性BDNF在癫痫发生中的作用。海藻酸诱导癫痫持续状态(SE)后,通过video-EEG系统监测自发性癫痫发作的发展。肺门细胞丢失和神经肽Y免疫反应性细胞的数量作为细胞损伤的标志物进行研究,苔藓纤维发芽作为可塑性标志物进行研究。我们的结果表明,转基因小鼠的发作频率明显低于野生型小鼠,自发发作的频率更低。此外,与野生型动物相比,转基因小鼠的癫痫发作较轻,发作较晚,死亡率较低。相反,在任何细胞或可塑性标记物中均未观察到基因型之间的差异。我们的结果表明,BDNF信号减少的转基因小鼠的癫痫发生减少。

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