In vivo cocaine experience generates silent synapses.

In vivo cocaine experience generates silent synapses.
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DOI:
10.1016/j.neuron.2009.06.007
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发表时间:
2009-07-16
期刊:
影响因子:
16.2
通讯作者:
Dong, Yan
Dong, Yan
中科院分区:
医学1区
文献类型:
--
作者:
Huang, Yanhua H.;Lin, Ying;Mu, Ping;Lee, Brian R.;Brown, Travis E.;Wayman, Gary;Marie, Helene;Liu, Wenhua;Yan, Zhen;Sorg, Barbara A.;Schlueter, Oliver M.;Zukin, R. Suzanne;Dong, Yan

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Studies over the past decade have enunciated silent synapses as prominent cellular substrates for synaptic plasticity in the developing brain. However, little is known about whether silent synapses can be generated post-developmentally. Here, we demonstrate that highly salient in vivo experience, such as exposure to cocaine, generates silent synapses in the nucleus accumbens (NAc) shell, a key brain region mediating addiction-related learning and memory. Furthermore, this cocaine-induced generation of silent synapses is mediated by membrane insertions of new, NR2B–containing N-methyl-D-aspartic acid receptors (NMDARs). These results provide evidence that silent synapses can be generated de novo by in vivo experience and thus may act as highly efficient neural substrates for the subsequent experience-dependent synaptic plasticity underlying extremely long-lasting memory.
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