| First Author | Jacobson LH | Year | 2007 |
| Journal | Behav Brain Res | Volume | 181 |
| Issue | 1 | Pages | 158-62 |
| PubMed ID | 17498817 | Mgi Jnum | J:121973 |
| Mgi Id | MGI:3712715 | Doi | 10.1016/j.bbr.2007.03.033 |
| Citation | Jacobson LH, et al. (2007) Specific roles of GABA(B(1)) receptor isoforms in cognition. Behav Brain Res 181(1):158-62 |
| abstractText | The GABA(B) receptor is a heterodimer of GABA(B(1)) and GABA(B(2)) subunits. There are two isoforms of the GABA(B(1)) subunit: GABA(B(1a)) and GABA(B(1b)). Recent studies with mutant mice suggest a differential role for the two GABA(B(1)) isoforms in behavioural processes. As pharmacological and genetic studies have implicated GABA(B) receptors in cognition we investigated the behaviour of GABA(B(1a))(-/-) and GABA(B(1b))(-/-) mice in different types of cognitive paradigms. GABA(B(1a))(-/-) and GABA(B(1b))(-/-) mice were both impaired relative to wildtype controls in a continuous spontaneous alternation behaviour test of working spatial memory. In contrast to the reported phenotype of GABA(B(1))(-/-) mice, however, neither GABA(B(1a))(-/-) nor GABA(B(1b))(-/-) mice were deficient in a passive avoidance task. On the other hand, GABA(B(1a))(-/-) mice were impaired in familiar and novel object recognition. We conclude that GABA(B(1)) isoforms contribute differentially to GABA(B) receptor-mediated cognitive processes. |
