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Brain Res. 2005 Jun 7;1046(1-2):239-43.

Subchronic treatment with imipramine ameliorates the decreased number in neuropeptide Y-positive cells in the hippocampus of learned helplessness rats.

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  • 1Department of Neuropsychiatry, Faculty of Medicine, Tottori University, Japan.

Abstract

Learned helplessness, but not immobilization stress, decreased the numbers of neuropeptide Y (NPY)-positive cells (interneuron), but not calcitonin gene-related peptide (CGRP)-positive cells (mossy cell), in the hilus of the hippocampus. Subchronic treatment of learned helplessness rats, but not naive rats, with imipramine ameliorated the decrease in the number of NPY-positive cells. Therefore, NPY-positive cells in the hippocampus may contribute to depression.

PMID:
15869748
[PubMed - indexed for MEDLINE]

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