Adenosine A1-receptor agonist attenuates the light-induced phase shifts and fos expression in vivo and optic nerve stimulation-evoked field potentials in the suprachiasmatic nucleus in vitro
Adenosine A1-receptor agonist attenuates the light-induced phase shifts and fos expression in vivo and optic nerve stimulation-evoked field potentials in the suprachiasmatic nucleus in vitro
复制标题
腺苷 A1 受体激动剂在体内减弱光诱导的相移和 fos 表达,在体外减弱视神经刺激诱发的视交叉上核场电位
DOI:
10.1016/s0006-8993(96)00881-5
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发表时间:
1996
期刊:
影响因子:
2.9
通讯作者:
Shigenori Watanabe
中科院分区:
文献类型:
--
作者:
A. Watanabe;T. Moriya;Yukiko Nisikawa;T. Araki;T. Hamada;S. Shibata;Shigenori Watanabe
Adenosine is widely accepted to act as an inhibitory neuromodulator in the mammalian central nervous system. In the present study, we examined whether adenosine receptor agonist modifies the photic entraining responses in the rat suprachiasmatic nucleus both in vivo and in vitro. Light (200 lux, 15 min)-induced phase shifts of hamster wheel-running rhythms was attenuated by a systemic administration of A1-adenosine receptor agonist N6-cyclohexyladenosine (N-CHA) in a dose-dependent manner; 0.5 mg/kg N-CHA caused 60% inhibition of light-induced phase shifts. On the other hand, A2-adenosine receptor agonist N6-[2-(3,5-dirnethoxyphenyl)-2-(2-methyl-phenyl)-ethyl]adenosine (DPMA) failed to inhibit light-induced phase shifts. Systemic administration of N-CHA but not of DPMA inhibited light (300 lux, 1 h)-induced Fos expression in the suprachiasmatic nucleus in a dose-dependent manner; 1 mg/kg N-CHA caused 73% inhibition of light-induced Fos expression. Bath application of N-CHA but not of DPMA inhibited optic nerve stimulation-evoked field potentials in rat suprachiasmatic nucleus slices. The present results suggest that activation of adenosine A1-receptor attenuates the photic input through the inhibition of retinohypotalamic pathway to the SCN.
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DOI:
10.1113/jphysiol.1991.sp018515
发表时间:
1991-04
期刊:
The Journal of Physiology
影响因子:
--
作者:
K. Scholz;R. Miller
通讯作者:
K. Scholz;R. Miller
影响因子:
2.5
作者:
K. Obrietan;A. Belousov;H. Heller;A. N. van den Pol
通讯作者:
K. Obrietan;A. Belousov;H. Heller;A. N. van den Pol
影响因子:
56.9
作者:
DING, JM;CHEN, D;GILLETTE, MU
通讯作者:
GILLETTE, MU
影响因子:
2.5
作者:
ZHU, Y;IKEDA, SR
通讯作者:
IKEDA, SR
DOI:
10.1113/jphysiol.1994.sp020083
发表时间:
1994-03
期刊:
The Journal of Physiology
影响因子:
--
作者:
L. Wang;E. Dudek;M. Browning;J. Macdonald
通讯作者:
L. Wang;E. Dudek;M. Browning;J. Macdonald