Only high concentrations of ethanol affect GABAA receptors of rat cerebellum granule cells in culture

被引:15
作者
Casagrande, S.
Cupello, A.
Pellistri, F.
Robello, M.
机构
[1] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[2] CNR, Ist Bioimmagini & Fisiol, Genoa, Italy
关键词
ethanol; GABA(A) receptors; granule cells;
D O I
10.1016/j.neulet.2006.12.024
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
In the experiments described in the present report, we evaluated the effects of ethanol on the activity of GABA(A) receptors of cerebellar granule cells in culture. Only very high ethanol concentrations (100-300 mM) showed a clear and significant stimulatory effect on the activity of such receptors. This result was unexpected. In fact, previous reports from other groups would have suggested high ethanol sensitivity of at least one population of GABA(A) receptors expressed by granule cells. (c) 2007 Published by Elsevier Ireland Ltd.
引用
收藏
页码:273 / 276
页数:4
相关论文
共 22 条
[1]   GAMMA-AMINOBUTYRIC-ACID AND ALCOHOL ACTIONS - NEUROCHEMICAL STUDIES OF LONG SLEEP AND SHORT SLEEP MICE [J].
ALLAN, AM ;
HARRIS, RA .
LIFE SCIENCES, 1986, 39 (21) :2005-2015
[2]  
Barnard EA, 1998, PHARMACOL REV, V50, P291
[3]   The δ subunit of γ-aminobutyric acid type A receptors does not confer sensitivity to low concentrations of ethanol [J].
Borghese, CM ;
Stórustovu, SI ;
Ebert, B ;
Herd, MB ;
Belelli, D ;
Lambert, JJ ;
Marshall, G ;
Wafford, KA ;
Harris, RA .
JOURNAL OF PHARMACOLOGY AND EXPERIMENTAL THERAPEUTICS, 2006, 316 (03) :1360-1368
[4]   Development of a tonic form of synaptic inhibition in rat cerebellar granule cells resulting from persistent activation of GABA(A) receptors [J].
Brickley, SG ;
CullCandy, SG ;
Farrant, M .
JOURNAL OF PHYSIOLOGY-LONDON, 1996, 497 (03) :753-759
[5]   Alcohol enhances GABAergic transmission to cerebellar granule cells via an increase in Golgi cell excitability [J].
Carta, M ;
Mameli, M ;
Valenzuela, CF .
JOURNAL OF NEUROSCIENCE, 2004, 24 (15) :3746-3751
[6]  
Cupello A, 2000, RECEPTOR CHANNEL, V7, P151
[7]  
DIETRICH RA, 1996, ALCOHOL CLIN EXP RES, V20, P1
[8]   Alcohol-induced motor impairment caused by increased extrasynaptic GABAA receptor activity [J].
Hanchar, HJ ;
Dodson, PD ;
Olsen, RW ;
Otis, TS ;
Wallner, M .
NATURE NEUROSCIENCE, 2005, 8 (03) :339-345
[9]   AUTORADIOGRAPHIC LOCALIZATION AND DEPOLARIZATION-INDUCED RELEASE OF ACIDIC AMINO-ACIDS IN DIFFERENTIATING CEREBELLAR GRANULE CELL-CULTURES [J].
LEVI, G ;
ALOISI, F ;
CIOTTI, MT ;
GALLO, V .
BRAIN RESEARCH, 1984, 290 (01) :77-86
[10]   Immunocytochemical study by two photon fluorescence microscopy of the distribution of GABAA receptor subunits in rat cerebellar granule cells in culture [J].
Merlo, F ;
Balduzzi, R ;
Cupello, A ;
Robello, M .
AMINO ACIDS, 2004, 26 (01) :77-84