Anxiolytic actions of motilin in the basolateral amygdala.

Abstract:

:Motilin is a 22-amino-acid gastrointestinal polypeptide that was first isolated from the porcine intestine. We identified that motilin receptor is highly expressed in GABAergic interneurons in the basolateral nucleus (BLA) of the amygdala, the structure of which is closely involved in assigning stress disorder and anxiety. However, little is known about the role of motilin in BLA neuronal circuits and the molecular mechanisms of stress-related anxiety. Whole-cell recordings from amygdala slices showed that motilin depolarized the interneurons and facilitated GABAergic transmission in the BLA, which is mimicked by the motilin receptor agonist, erythromycin. BLA local injection of erythromycin or motilin can reduce the anxiety-like behavior in mice after acute stress. Therefore, motilin is essential in regulating interneuron excitability and GABAergic transmission in BLA. Moreover, the anxiolytic actions of motilin can partly be explained by modulating the BLA neuronal circuits. The present data demonstrate the importance of motilin in anxiety and the development of motilin receptor non-peptide agonist as a clear target for the potential treatment of anxiety disorders.

journal_name

Mol Neurobiol

journal_title

Molecular neurobiology

authors

Feng B,Liu JC,Zhang J,Ozaki K,Guo YY,Yi DH,Li XQ,Zhao MG

doi

10.1007/s12035-012-8383-5

subject

Has Abstract

pub_date

2013-06-01 00:00:00

pages

892-902

issue

3

eissn

0893-7648

issn

1559-1182

journal_volume

47

pub_type

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