Effect of Reboxetine Pretreatment on the Forced Swimming Test-induced Gene Expression Profile in the Rat Lateral Septum

  • Moon, Bo-Hyun (Department of Pharmacology and Division of Brain Korea 21 Biomedical Science, Korea University College of Medicine) ;
  • Kang, Seung-Woo (Department of Pharmacology and Division of Brain Korea 21 Biomedical Science, Korea University College of Medicine) ;
  • Kim, Hyun-Ju (Department of Pharmacology and Division of Brain Korea 21 Biomedical Science, Korea University College of Medicine) ;
  • Shin, Seung-Keon (Department of Pharmacology and Division of Brain Korea 21 Biomedical Science, Korea University College of Medicine) ;
  • Choi, Sang-Hyun (Department of Pharmacology and Division of Brain Korea 21 Biomedical Science, Korea University College of Medicine) ;
  • Lee, Min-Soo (Department of Psychiatry and Division of Brain Korea 21 Biomedical Science, Korea University College of Medicine) ;
  • Kim, Myeung-Kon (Department of Biochemistry and Molecular Biology, Korea University College of Medicine) ;
  • Shin, Kyung-Ho (Department of Pharmacology and Division of Brain Korea 21 Biomedical Science, Korea University College of Medicine)
  • Published : 2008.03.31

Abstract

The forced swim test (FST) is the most widely used model for assessing potential antidepressant activity. Although it has been shown that lateral septum is involved with the FST-related behavior, it is not clear whether antidepressant treatments could alter the FST-induced gene expression profile in the lateral septum. In the present study, the gene expression profiles in response to FST and reboxetine pretreatment were observed in the lateral septum of rats. Reboxetine is known as a most selective serotonin norepinephrine reuptake inhibitor. In addition, we compared the changes in gene expression profile between reboxetine response and nonresponse groups, which were determined by counting FST-related behavior. After FST, lateral septum from controls and reboxetine pretreated group were dissected and gene expression profiles were assessed using an Affymetrix microarray system containing 15,923 genes. Various genes with different functions were changed in reboxetine response group compared with reboxetine nonresponse group, In particular, pleiotrophin, orexin receptor 2, serotonin 2A receptor, neuropeptide Y5 receptor and thyroid hormone receptor $\beta$ were decreased in reboxetine response group, but Lim motif-containing protein kinase 1 (Limk1) and histone deacetylase 1 (HDAC1) were increased. Although further studies are required for direct roles of these genes in reboxetine response, the microarray may provide tools to find out potential target genes and signaling pathways in antidepressant response.

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