Catechins from green tea modulate neurotransmitter transporter activity in Xenopus oocytes

Catechins from green tea modulate neurotransmitter transporter activity in Xenopus oocytes
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绿茶中的儿茶素调节非洲爪蟾卵母细胞中的神经递质转运蛋白活性

DOI:
10.1080/23312025.2016.1261577
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发表时间:
2016-12
期刊:
影响因子:
--
通讯作者:
Wolfgang Schwarz
Wolfgang Schwarz
中科院分区:
--
文献类型:
--
作者:
Yixin Wang;Tim Englemann;Yinfang XU;Wolfgang Schwarz

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gaba能和谷氨酸能系统在控制中枢神经系统的活动中起关键作用。哺乳动物中枢神经系统中转运细胞外GABA和谷氨酸的重要膜蛋白是GABA转运蛋白GAT1和谷氨酸转运蛋白EAAC1。研究了茶树儿茶素在电压箝位下对GAT1和EAAC1活性的影响。表没食子儿茶素-3-没食子酸酯在约100μM处将gat1介导的电流抑制至50%。(-)-表儿茶素可刺激eaac1介导的电流达80%;在5μM左右达到最大增产的50%。抑制GAT1和刺激EAAC1将抵消过度兴奋性。
The GABAergic and glutamatergic systems play key roles in controlling activity of the central nervous system. Important membrane proteins in the mammalian central nervous system transporting extracellular GABA and glutamate are the GABA transporter GAT1 and the glutamate transporter EAAC1. We investigated the effect of catechins of green tea (Camellia sinensis) on the activity of GAT1 and EAAC1 by detecting the respective electrogenic transporter-mediated current under voltage clamp. Epigallocatechin-3-gallate inhibited GAT1-mediated current to 50% at about 100μM. The EAAC1-mediated current could be stimulated up to 80% by (-)-epicatechin; 50% of maximum stimulation was achieved by about 5μM. Inhibition of GAT1 and stimulation of EAAC1 will counteract hyperexcitability.
DOI: 10.1038/sj.bjp.0702794
发表时间: 1999-09-01
影响因子: 7.3
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