Evidence for constitutively-active adenosine receptors at mammalian motor nerve endings.
Evidence for constitutively-active adenosine receptors at mammalian motor nerve endings.
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哺乳动物运动神经末梢具有组成型活性腺苷受体的证据。
DOI:
10.1016/j.ejphar.2012.04.008
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发表时间:
2012
影响因子:
5
通讯作者:
Silinsky,EugeneM
中科院分区:
文献类型:
--
作者:
Searl,TimothyJ;Silinsky,EugeneM
A study was made to determine if constitutively active adenosine receptors are present at mouse motor nerve endings. In preparations blocked by low Ca2+/high Mg2+solution, 8-cyclopentyl-1,3,dipropylxanthine (CPX, 10–100nM), which has been reported to be both an A1adenosine receptor antagonist and inverse agonist, produced a dose-dependent increase in the number of acetylcholine quanta released by a nerve impulse. Adenosine deaminase, which degrades ambient adenosine into its inactive congener, inosine, failed to alter the response to 100nM CPX. 8-Cyclopentyltheophylline (CPT, 3μM), a competitive inhibitor at A1adenosine receptors, prevented the increase in acetylcholine release produced by CPX. At normal levels of acetylcholine release, neither adenosine deaminase nor CPX affected acetylcholine release at low frequencies of nerve stimulation in (+)-tubocurarine blocked preparations. The results suggest that a proportion of the acetylcholine release process is controlled by constitutively active adenosine receptors at murine motor nerve endings, providing the first evidence for constitutive activity of G-protein-coupled receptors that modulate the function of mammalian nerve endings.
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影响因子:
4.3
作者:
R. Schiff;D. Mercier;R. Buckley
通讯作者:
R. Buckley
DOI:
10.1073/pnas.71.2.517
发表时间:
1974
影响因子:
11.1
作者:
R. Pope;David C. TELLERt;M. Mannik
通讯作者:
M. Mannik
DOI:
10.1016/s0140-6736(79)90615-9
发表时间:
1979
期刊:
The Lancet
影响因子:
--
作者:
M. Vejtorp
通讯作者:
M. Vejtorp
影响因子:
--
作者:
R. Pope;S. McDuffy
通讯作者:
S. McDuffy
DOI:
10.1172/jci109643
发表时间:
1980
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
S. Yoshinoya;R. Pope
通讯作者:
R. Pope