Ethanol's Effects on Cortical Adenylate Cyclase Activity
Ethanol's Effects on Cortical Adenylate Cyclase Activity
复制标题
乙醇对皮质腺苷酸环化酶活性的影响
DOI:
10.1111/j.1471-4159.1985.tb08722.x
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发表时间:
1985
影响因子:
4.7
通讯作者:
B. Tabakoff
中科院分区:
文献类型:
--
作者:
T. Saito;John M. Lee;B. Tabakoff
Abstract: The effects of ethanol on β‐adrenergic receptor‐coupled adenylate cyclase (AC) of mouse cerebral cortex were examined. The addition of ethanol (20–500 mM) to incubation mixtures containing cortical membranes demonstrated that ethanol could increase AC activity and potentiate the stimulatory effects of guanylylimidodiphosphate [Gpp(NH)p] on AC activity. Ethanol increased the rate of activation of AC by guanine nucleotides and concomitantly decreased the EC50 for magnesium required to achieve maximal stimulation of cortical AC. The EC50 values for Gpp(NH)p and isoproterenol stimulation of AC activity were also altered by ethanol. Ethanol was capable of stimulating AC extracted by use of digitonin. The AC activity in the digitonin extract was no longer sensitive to the addition of Gpp(NH)p or NaF, but was still stimulated by ethanol. We propose multiple sites of action for ethanol in stimulating cortical AC activity. These sites include actions at the β‐adrenergic receptor, at the G/F coupling proteins, and at the catalytic unit of cortical AC. Comparison of ethanol's actions on cortical β receptor coupled AC activity with prior reported actions of ethanol on striatal dopamine (DA)‐sensitive AC indicated differential sensitivities of these two AC systems to ethanol. These differences may be determined by specific coupling characteristics of the striatal and cortical AC systems or by differences in the plasma membranes in which striatal and cortical AC systems are located.
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DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Somkuti,SG;Hildebrandt,JD;Herberg,JT;Iyengar,R
通讯作者:
Iyengar,R
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Northup,JK;Smigel,MD;Sternweis,PC;Gilman,AG
通讯作者:
Gilman,AG
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Katada,T;Bokoch,GM;Northup,JK;Ui,M;Gilman,AG
通讯作者:
Gilman,AG
DOI:
--
发表时间:
1984
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
Luthin,GR;Tabakoff,B
通讯作者:
Tabakoff,B
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Northup,JK;Sternweis,PC;Gilman,AG
通讯作者:
Gilman,AG