首页> 外文期刊>Neuroscience Letters: An International Multidisciplinary Journal Devoted to the Rapid Publication of Basic Research in the Brain Sciences >Serine/threonine protein phosphatases have no role in the inhibitory effects of low-frequency stimulation in perforant path kindling acquisition in rats.
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Serine/threonine protein phosphatases have no role in the inhibitory effects of low-frequency stimulation in perforant path kindling acquisition in rats.

机译:丝氨酸/苏氨酸蛋白磷酸酶在大鼠穿孔路径点燃获取中对低频刺激的抑制作用中没有作用。

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摘要

The use of low-frequency stimulation (LFS) as a therapy for epilepsy is currently being studied in experimental animals and patients with epilepsy. In the present study, the role of serine/threonine protein phosphatases in the inhibitory effects of LFS on perforant path kindling acquisition was investigated in rats. Animals were kindled by stimulation of perforant path in a stimulation using rapid kindling procedure (six stimulations per day). LFS (1Hz) was applied immediately after termination of each kindling stimulation. FK506 (1microM; i.c.v.), a serine/threonine protein phosphatase PP2B inhibitor and okadaic acid (1microM; i.c.v.), a serine/threonine protein phosphatases PP1/2A inhibitor, were daily microinjected into the left ventricle 10min before starting the stimulation protocol. Application of LFS retarded the kindling acquisition and delayed the expression of different kindled seizure stages significantly. In addition, LFS reduced the increment of daily afterdischarge duration during kindling development. Neither FK506 nor okadaic acid microinjection interfere with the antiepileptogenic effect of LFS on kindling parameters. Obtained results showed that activation of PP1/2A and PP2B, which play a critical role in LFS induced down-regulation of synaptic strength, had no role in mediating the inhibitory effects of LFS on perforant path kindling acquisition.
机译:目前正在实验动物和癫痫患者中研究使用低频刺激(LFS)作为癫痫治疗方法。在本研究中,在大鼠中研究了丝氨酸/苏氨酸蛋白磷酸酶在LFS抑制穿孔路径点燃获取中的作用。通过使用快速点燃程序(每天六次刺激)刺激穿孔路径来刺激动物。每次点燃刺激终止后立即施加LFS(1Hz)。每天在开始刺激方案前10分钟,每天向左心室微量注射丝氨酸/苏氨酸蛋白磷酸酶PP2B抑制剂FK506(1microM; i.c.v.)和丝氨酸/苏氨酸蛋白磷酸酶PP1 / 2A抑制剂冈田酸(1microM; i.c.v.)。 LFS的应用显着延迟了点燃的获得并延迟了不同点燃发作阶段的表达。此外,LFS减少了点燃过程中每天放电后持续时间的增加。 FK506和冈田酸显微注射都不会干扰LFS对点燃参数的抗癫痫作用。获得的结果表明,在LFS诱导的突触强度下调中起关键作用的PP1 / 2A和PP2B的激活在介导LFS对穿孔路径点燃获取的抑制作用中没有作用。

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