Fluoxetine restores spatial learning but not accelerated forgetting in mesial temporal lobe epilepsy
Fluoxetine restores spatial learning but not accelerated forgetting in mesial temporal lobe epilepsy
复制标题
DOI：
10.1093/brain/aws176
复制
发表时间：
2012-08-01
期刊：
影响因子：
14.5
通讯作者：
Gray, William P.
中科院分区：
文献类型：
--
作者：
Barkas, Lisa;Redhead, Edward;Gray, William P.
Learning and memory dysfunction is the most common neuropsychological effect of mesial temporal lobe epilepsy, and because the underlying neurobiology is poorly understood, there are no pharmacological strategies to help restore memory function in these patients. We have demonstrated impairments in the acquisition of an allocentric spatial task, in patients with unilateral hippocampal sclerosis. We also show that patients have accelerated forgetting of the learned spatial task and that this is associated with damage to the non-dominant hippocampal formation. We go on to show a very similar pattern of chronic allocentric learning and accelerated forgetting in a status epilepticus model of mesial temporal lobe epilepsy in rats, which is associated with reduced and abnormal hippocampal neurogenesis. Finally, we show that reversal of the neurogenic deficit using fluoxetine is associated with reversal of the learning deficit but not the accelerated forgetting, pointing to a possible dissociation in the underlying mechanisms, as well as a potential therapeutic strategy for improving hippocampal-dependant learning in patients with mesial temporal lobe epilepsy.
