|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Dental Medicine / Faculty of Dental Medicine >
Peer-reviewed Journal Articles, etc >
Chemogenetic inhibition of the bed nucleus of the stria terminalis suppresses the intake of a preferable and learned aversive sweet taste solution in male mice
| Title: | Chemogenetic inhibition of the bed nucleus of the stria terminalis suppresses the intake of a preferable and learned aversive sweet taste solution in male mice |
| Authors: | Kikuchi, Emi Browse this author | | Inui, Tadashi Browse this author →KAKEN DB | | Su, Shaoyi Browse this author | | Sato, Yoshiaki Browse this author →KAKEN DB | | Funahashi, Makoto Browse this author →KAKEN DB |
| Keywords: | conditioned taste aversion | | retrieval | | bed nucleus of the stria terminalis | | hM4Di | | CNO |
| Issue Date: | 9-Dec-2022 |
| Publisher: | Elsevier |
| Journal Title: | Behavioural brain research |
| Volume: | 439 |
| Start Page: | 114253 |
| Publisher DOI: | 10.1016/j.bbr.2022.114253 |
| PMID: | 36509179 |
| Abstract: | Conditioned taste aversion (CTA) is established by pairing a taste solution as a conditioned stimulus (CS) with visceral malaise as an unconditioned stimulus (US). CTA decreases the taste palatability of a CS. The bed nucleus of the stria terminalis (BNST) receives taste inputs from the brainstem. However, the involvement of the BNST in CTA remains unclear. Thus, this study examined the effects of chemogenetic inhibition of the BNST neurons on CS intake after CTA acquisition. An adeno-associated virus was micminjected into the BNST of male C57/BL6 mice to induce the inhibitory designer receptor hM4Di. The mice received a pairing of 0.2% saccharin solution (CS) with 0.3 M lithium chloride (2% BW, intraperitoneal). After conditioning, the administration of clozapine-N-oxide (CNO, 1 mg/kg) significantly enhanced the suppression of CS intake on the retrieval of CTA compared with its intake following saline administration (p < 0.01). We further assessed the effect of BNST neuron inhibition on the intake of water and taste solutions (saccharin, sucralose, sodium chloride, monosodium glutamate, quinine hydrochloride, and citric acid) using naive (not learned CTA) mice. CNO administration significantly decreased the intake of saccharin and sucralose (p < 0.05). Our results indicate that BNST neurons mediate sweet taste and regulate sweet intake, regardless of whether sweets should be ingested or rejected. BNST neurons may be inhibited in the retrieval of CTA, thereby suppressing CS intake. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/87784 |
| Appears in Collections: | 歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
|
