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A mathematical model for astrocytes mediated LTP at single hippocampal synapses

机译:单个海马突触中星形胶质细胞介导的LTP的数学模型

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摘要

Many contemporary studies have shown that astrocytes play a significant role in modulating both short and long form of synaptic plasticity. There are very few experimental models which elucidate the role of astrocyte over Long-term Potentiation (LTP). Recently, Perea and Araque (Science 317:1083-1086, 2007) demonstrated a role of astrocytes in induction of LTP at single hippocampal synapses. They suggested a purely pre-synaptic basis for induction of this N-methyl-D-Aspartate (NMDA) Receptor-independent LTP. Also, the mechanisms underlying this pre-synaptic induction were not investigated. Here, in this article, we propose a mathematical model for astrocyte modulated LTP which successfully imitates the experimental findings of Perea and Araque (Science 317:1083-1086, 2007). Our study suggests the role of retrograde messengers, possibly Nitric Oxide (NO), for this pre-synaptically modulated LTP.
机译:许多当代研究表明,星形胶质细胞在调节短时和长时突触可塑性中起重要作用。很少有实验模型阐明星形胶质细胞在长期增强(LTP)中的作用。最近,Perea和Araque(Science 317:1083-1086,2007)证明了星形胶质细胞在单个海马突触中诱导LTP中的作用。他们提出了一个纯粹的突触前基础来诱导这种N-甲基-D-天冬氨酸(NMDA)受体非依赖性LTP。同样,未研究这种突触前诱导的机制。在本文中,我们提出了星形胶质细胞调节LTP的数学模型,该模型成功地模仿了Perea和Araque的实验发现(科学317:1083-1086,2007)。我们的研究表明,对于这种先突触调节的LTP,逆行信使的作用可能是一氧化氮(NO)。

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