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logo 9/25/2024 4:14:13 AM     
Acetylcholine potentiates glutamate transmission from the habenula to the interpeduncular nucleus in losers of social conflict 
By Masae Kinoshita Hitoshi Okamoto JP Source: cell 4/26/2023
Masae Kinoshita Hitoshi Okamoto
 Switching behaviors from aggression to submission in losers at the end of conspecific social fighting is essential to avoid serious injury or death. We have previously shown that the experience of defeat induces a loser-specific potentiation in the habenula (Hb)-interpeduncular nucleus (IPN) and show here that this is induced by acetylcholine.
 

Calcium imaging and electrophysiological recording using acute brain slices from winners and losers of fighting behavior in zebrafish revealed that the ventral IPN (vIPN) dominates over the dorsal IPN in the neural response to Hb stimulation in losers. We also show that GluA1 α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor subunits on the postsynaptic membrane increased in the vIPN of losers.

  
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