Abstract:
:In Xenopus oocytes coinjected with poly(A)+ RNA derived from the rat cerebellum and cRNAs for the cloned G protein-gated inwardly rectifying K+ channel (GIRK), GIRK1 and GIRK2, the GABA-B agonist baclofen elicited inwardly rectifying K+ currents. The inward K+ currents elicited by baclofen were inhibited by the selective GABA-B antagonists 2-OH saclofen and CGP 35348, and by the GIRK inhibitor Ba2+. In contrast, baclofen caused no currents in oocytes injected with the cerebellar poly(A)+ RNA alone, the poly(A)+ RNA and cRNA for GIRK1 or GIRK2, or only cRNAs for GIRK1 and GIRK2. These findings indicate that GABA-B receptors in the rat cerebellum were functionally expressed in Xenopus oocytes and activated the cloned GIRKs composed of GIRK1 and GIRK2 as heteromultimers.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Uezono Y,Akihara M,Kaibara M,Kawano C,Shibuya I,Ueda Y,Yanagihara N,Toyohira Y,Yamashita H,Taniyama K,Izumi Fdoi
10.1097/00001756-199803090-00004subject
Has Abstractpub_date
1998-03-09 00:00:00pages
583-7issue
4eissn
0959-4965issn
1473-558Xjournal_volume
9pub_type
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