首页> 外文期刊>Neuroscience Letters: An International Multidisciplinary Journal Devoted to the Rapid Publication of Basic Research in the Brain Sciences >A serotonin-1A receptor agonist and an N-methyl-D-aspartate receptor antagonist oppose each others effects in a genetic rat epilepsy model.
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A serotonin-1A receptor agonist and an N-methyl-D-aspartate receptor antagonist oppose each others effects in a genetic rat epilepsy model.

机译:血清素1A受体激动剂和N-甲基-D-天冬氨酸受体拮抗剂在基因大鼠癫痫模型中彼此相反。

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The WAG/RIJ rats exhibit spontaneously occurring spike-wave discharges (SWD) accompanied by behavioural phenomena, with characteristics similar to the human absence type epilepsy. To study the mechanisms involved in this type of epileptiform activity we investigated the effects of the serotonin-1A (5-HT1A) receptor agonist 8-hydroxy-2-(di-n-propylamino)-tetralin (8-OH-DPAT) and the N-methyl-D-aspartate (NMDA) receptor antagonist (+)-5-methyl-10,11-dihydro-5H-dibenzo [a,d]cyclohepten-5,10-imine maleate (MK-801). Intracerebroventricular (i.c.v.) injection of 8-OH-DPAT caused marked, dose dependent increase, MK-801 a decrease in the cumulative duration and number of spike-wave discharges. Pretreatment with MK-801 (10 microg/rat i.c.v.) abolished the increase caused by 8-OH-DPAT (20 microg/rat i.c.v.), but the decrease in SWD to MK-801 was counterbalanced by 8-OH-DPAT. These data provide evidence for an interaction of glutamatergic and serotonergic mechanisms in the triggering and maintenance of epileptic activity in this genetic model of absence epilepsy.
机译:WAG / RIJ大鼠表现出自发发生的尖峰波放电(SWD)并伴有行为现象,其特征类似于人类失神型癫痫。为了研究这种癫痫样活动的机制,我们研究了5-羟色胺-1A(5-HT1A)受体激动剂8-羟基-2-(二-正丙基氨基)-四氢化萘(8-OH-DPAT)和N-甲基-D-天冬氨酸(NMDA)受体拮抗剂(+)-5-甲基-10,11-二氢-5H-二苯并[a,d]环庚-5,10-亚胺马来酸酯(MK-801)。脑室内(i.c.v.)注射8-OH-DPAT引起明显的剂量依赖性增加,MK-801的累积持续时间和尖峰波放电次数减少。用MK-801(10微克/大鼠静脉)进行的预处理消除了8-OH-DPAT(20微克/大鼠静脉)引起的增加,但用8-OH-DPAT抵消了SWD降低至MK-801。这些数据提供了在这种失神癫痫遗传模型中,谷氨酸能和血清素能机制在触发和维持癫痫活动中相互作用的证据。

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