Abstract:
:Enhanced glutamatergic transmission in the nucleus accumbens (NAc), a region critical for reward and motivation, has been implicated in the pathophysiology of depression; however, the afferent source of this increased glutamate tone is not known. The NAc receives glutamatergic inputs from the medial prefrontal cortex (mPFC), ventral hippocampus (vHIP) and basolateral amygdala (AMY). Here, we demonstrate that glutamatergic vHIP afferents to NAc regulate susceptibility to chronic social defeat stress (CSDS). We observe reduced activity in vHIP in mice resilient to CSDS. Furthermore, attenuation of vHIP-NAc transmission by optogenetic induction of long-term depression is pro-resilient, whereas acute enhancement of this input is pro-susceptible. This effect is specific to vHIP afferents to the NAc, as optogenetic stimulation of either mPFC or AMY afferents to the NAc is pro-resilient. These data indicate that vHIP afferents to NAc uniquely regulate susceptibility to CSDS, highlighting an important, novel circuit-specific mechanism in depression.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Bagot RC,Parise EM,Peña CJ,Zhang HX,Maze I,Chaudhury D,Persaud B,Cachope R,Bolaños-Guzmán CA,Cheer JF,Deisseroth K,Han MH,Nestler EJdoi
10.1038/ncomms8062subject
Has Abstractpub_date
2015-05-08 00:00:00pages
7062issn
2041-1723pii
ncomms8062journal_volume
6pub_type
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