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Neuropeptide Y as Alternative Pharmacotherapy for Antidepressant-Resistant Social Fear.

Abstract：

:In many social anxiety disorder (SAD) patients, the efficacy of antidepressant therapy is unsatisfactory. Here, we investigated whether mice deficient for the lysosomal glycoprotein acid sphingomyelinase (ASM-/-) represent an appropriate tool to study antidepressant-resistant social fear. We also investigated whether neuropeptide Y (NPY) reduces this antidepressant-resistant social fear in ASM-/- mice, given that NPY reduced social fear in a mouse model of SAD, namely social fear conditioning (SFC). We show that neither chronic paroxetine nor chronic amitriptyline administration via drinking water were successful in reducing SFC-induced social fear in ASM-/- mice, while the same treatment reduced social fear in ASM+/- mice and completely reversed social fear in ASM+/+ mice. This indicates that the antidepressants paroxetine and amitriptyline reduce social fear via the ASM-ceramide system and that ASM-/- mice represent an appropriate tool to study antidepressant-resistant social fear. The intracerebroventricular administration of NPY, on the other hand, reduced social fear in ASM-/- mice, suggesting that NPY might represent an alternative pharmacotherapy for antidepressant-resistant social fear. These results suggest that medication strategies aimed at increasing brain NPY concentrations might improve symptoms of social fear in SAD patients who fail to respond to antidepressant treatments.

journal_name

Int J Mol Sci

journal_title

International journal of molecular sciences

authors

Kornhuber J,Zoicas I

doi

10.3390/ijms21218220

subject

Has Abstract

pub_date

2020-11-03 00:00:00

issue

21

issn

1422-0067

pii

ijms21218220

journal_volume

21

pub_type

杂志文章

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