Doxapram increases corticotropin-releasing factor immunoreactivity and mRNA expression in the rat central nucleus of the amygdala

Song Hyen Choi, Sung Jin Kim, Sang Ha Park, Bo Hyun Moon, Eunju Do, Boe Gwun Chun, Min-Soo Lee, Kyung-Ho Shin

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Doxapram causes panic anxiety in humans. To determine whether doxapram alters corticotropin-releasing factor (CRF) expression in the central nucleus of the amygdala (CeA), paraventricular nucleus of hypothalamus (PVN), or bed nucleus of the stria terminalis (BNST), we used immunohistochemistry to measure CRF peptide in these brain areas after doxapram injection. Doxapram injection significantly increased CRF-like immunoreactivity (CRF-IR) within the CeA, but not in the BNST or PVN, and this increase was significant 2 h after injection. In addition, doxapram significantly increased CRF mRNA expression within the CeA, and this was most prominent 30 min after injection. These results suggest that doxapram selectively increases CRF expression within the CeA, and that this is mediated by increased CRF gene transcription. This increase in CRF-IR within the CeA might explain the doxapram-induced anxiety reaction.

Original languageEnglish
Pages (from-to)2246-2251
Number of pages6
JournalPeptides
Volume26
Issue number11
DOIs
Publication statusPublished - 2005 Nov 1

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Keywords

  • Amygdala
  • Anxiety
  • Corticotropin-releasing factor
  • Doxapram

ASJC Scopus subject areas

  • Biochemistry
  • Physiology
  • Endocrinology
  • Cellular and Molecular Neuroscience

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