title: Serotonin receptor expression along the dorsal-ventral axis of mouse hippocampus.
abstract: Using in situ hybridization, we describe, for the first time, the profiles of expression of serotonin receptors (Htr/5-HTR) along the dorsal-ventral axis of mouse hippocampus. cRNA probes for most Htrs, excluding Htr6, were used. All hippocampal subregions and the entorhinal cortex cells providing input into the hippocampus were examined. The study shows that some, but not all, Htrs are expressed in the cells of the hippocampal circuitry. At both the subfield and the cell type levels, a somewhat overlapping pattern is observed. Four serotonin receptors, Htr1a, Htr2a, Htr2c and Htr7, display an expression pattern that changes along the dorsal-ventral axis of the hippocampus. Given the proposed functional differentiation of the hippocampus along its long axis, with the dorsal pole more involved in cognitive functions and the ventral pole more involved in mood and anxiety, our results suggest that serotonin receptors enriched in the ventral pole probably contribute to mood- and anxiety-related behaviours.
authors: Division of Neurobiology and Bioinformatics, National Institute for Physiological Sciences, , Okazaki Aichi 444-8787, Japan. kftanaka@a8.keio.jp
authors: Kenji F
authors: KF
authors: Tanaka
authors: Benjamin Adam
authors: BA
authors: Samuels
authors: René
authors: R
authors: Hen
mesh_terms: D000818:Animals; D006624:Hippocampus / Q000166:cytology / Q000378:metabolism*; D017404:In Situ Hybridization, Fluorescence; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D011985:Receptors, Serotonin / Q000235:genetics / Q000378:metabolism*; D012701:Serotonin / Q000235:genetics / Q000378:metabolism*; D059467:Transcriptome
chemical_list: D012333:RNA, Messenger; D011985:Receptors, Serotonin; D012701:Serotonin