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• W1909590888 abstract "Abstract Calcitonin gene‐related peptide ( CGRP ) is a 37 amino acid neuropeptide, which plays a critical role in the central nervous system. CGRP binds to G protein‐coupled receptors, including CGRP 1, which couples positively to adenylyl cyclase ( AC ) and protein kinase A ( PKA ) activation. CGRP and CGRP 1 receptors are enriched in central nucleus of the amygdala (CeA), the main part of the amygdala, which regulates conditioned fear memories. Here, we reported the importance of CGRP and CGRP 1 receptor for synaptic plasticity in the CeA and the extinction of fear memory in rats. Our electrophysiological and behavioral in vitro and in vivo results showed exogenous application of CGRP induced an immediate and lasting long‐term potentiation in the basolateral nucleus of amygdala–CeA pathway, but not in the lateral nucleus of amygdala–CeA pathway, while bilateral intra‐CeA infusion CGRP (0, 5, 13 and 21 μM/side) dose dependently enhanced fear memory extinction. The effects were blocked by CGRP 1 receptor antagonist ( CGRP 8–37 ), N ‐methyl‐ d ‐aspartate receptors antagonist MK 801 and PKA inhibitor H89. These results demonstrate that CGRP can lead to long‐term potentiation of basolateral nucleus of amygdala–CeA pathway through a PKA ‐dependent postsynaptic mechanism that involved N ‐methyl‐ d ‐aspartate receptors and enhance the extinction of fear memory in rats. Together, the results strongly support a pivotal role of CGRP in the synaptic plasticity of CeA and extinction of fear memory. image Calcitonin gene‐related peptide (CGRP) plays an essential role in synaptic plasticity in the amygdala and fear memory. We found that CGRP‐induced chemical long‐term potentiation (LTP) in a dose‐dependent way in the BLA–CeA (basolateral and central nucleus of amygdala, respectively) pathway and enhanced fear memory extinction in rats through a protein kinase A (PKA)‐dependent postsynaptic mechanism that involved NMDA receptors. These results support a pivotal role of CGRP in amygdala." @default.
• W1909590888 created "2016-06-24" @default.
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• W1909590888 date "2015-08-18" @default.
• W1909590888 modified "2023-10-17" @default.
• W1909590888 title "Calcitonin gene-related peptide erases the fear memory and facilitates long-term potentiation in the central nucleus of the amygdala in rats" @default.
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• W1909590888 doi "https://doi.org/10.1111/jnc.13246" @default.
• W1909590888 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26179152" @default.
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