Interactions of the Anticonvulsants Diphenylhydantoin and Carbamazepine with Adenosine on Cerebral Cortical Neurons

Interactions of the Anticonvulsants Diphenylhydantoin and Carbamazepine with Adenosine on Cerebral Cortical Neurons
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抗惊厥药二苯内酰脲和卡马西平与腺苷对大脑皮质神经元的相互作用

DOI:
10.1111/j.1528-1157.1984.tb03489.x
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发表时间:
1984
期刊:
影响因子:
5.6
通讯作者:
J. Phillis
J. Phillis
中科院分区:
医学1区
文献类型:
--
作者:
J. Phillis

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摘要:通过多管移液管离子导入或腹腔注射二苯基海妥英,可以延长腺苷引起的大鼠大脑皮层神经元自发放电抑制的持续时间。在较大剂量的情况下,离子连接应用二苯基氢妥英可以抑制皮质神经元的放电。20 mg/ kg的咖啡因可拮抗腺苷和二苯肼的抑制作用。这些结果支持了先前的一个建议,即二苯基海因可能通过抑制腺苷摄取来发挥其中心作用,从而增强细胞外腺苷的水平。卡马西平不能增强离子连接应用的腺苷对大脑皮质神经元的作用,并且在高剂量下它减少了腺苷引起的抑郁的持续时间。这一发现与卡马西平可能作为腺苷受体拮抗剂的建议一致。
Summary: Diphenylhydantoin, administered either by iontophoresis from a multibarreled pipette or intraperitoneally, prolonged the duration of adenosine‐evoked depressions of the spontaneous firing of rat cerebral cortical neurons. In larger amounts, iontophoretically applied diphenylhydantoin depressed the firing of cortical neurons. The depressant actions of both adenosine and diphenylhydantoin were antagonized by caffeine (20 mg/ kg). These results support a previous suggestion that diphenylhydantoin may exert its central effects by inhibiting adenosine uptake, thus potentiating the levels of extracellular adenosine. Carbamazepine failed to potentiate the actions of iontophoretically applied adenosine on cerebral cortical neurons, and at higher doses it reduced the duration of adenosine‐elicited depressions. This finding is consistent with suggestions that carbamazepine may act as an antagonist at adenosine receptors.
DOI: --
发表时间: 1982
期刊: The Journal of pharmacology and experimental therapeutics
影响因子: --
作者:
T. Dunwiddie;T. Worth
通讯作者: T. Dunwiddie;T. Worth
苯妥英和其他抗惊厥药物对钾和藜芦定刺激的突触体钙摄取的作用比较。
DOI: --
发表时间: 1982
期刊: The Journal of pharmacology and experimental therapeutics
影响因子: --
作者:
Ferrendelli,JA;Daniels-McQueen,S
通讯作者: Daniels-McQueen,S