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Ethanol opens G-protein-activated inwardly rectifying K+ channels.
- Source :
-
Nature Neuroscience . Dec99, Vol. 2 Issue 12, p1091. 7p. - Publication Year :
- 1999
-
Abstract
- Ethanol affects many functions of the brain and peripheral organs. Here we show that ethanol opens G-protein-activated, inwardly rectifying K[sup +] (GIRK) channels, which has important implications for inhibitory regulation of neuronal excitability and heart rate. At pharmacologically relevant concentrations, ethanol activated both brain-type GIRK½ and cardiac-type GIRK¼ channels without interaction with G proteins or second messengers. Moreover, weaver mutant mice, which have a missense mutation in the GIRK2 channel, showed a loss of ethanol-induced analgesia. These results suggest that the GIRK channels in the brain and heart are important target sites for ethanol. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ALCOHOL
*G proteins
*POTASSIUM channels
Subjects
Details
- Language :
- English
- ISSN :
- 10976256
- Volume :
- 2
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Nature Neuroscience
- Publication Type :
- Academic Journal
- Accession number :
- 8829405
- Full Text :
- https://doi.org/10.1038/16019