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首页> 外文期刊>Neuron >Presynaptic miniature GABAergic currents in developing interneurons.
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Presynaptic miniature GABAergic currents in developing interneurons.

机译:发育中的神经元突触前微型GABA能电流。

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Miniature synaptic currents have long been known to represent random transmitter release under resting conditions, but much remains to be learned about their nature and function in central synapses. In this work, we describe a new class of miniature currents ("preminis") that arise by the autocrine activation of axonal receptors following random vesicular release. Preminis are prominent in gabaergic synapses made by cerebellar interneurons during the development of the molecular layer. Unlike ordinary miniature postsynaptic currents in the same cells, premini frequencies are strongly enhanced by subthreshold depolarization, suggesting that the membrane depolarization they produce belongs to a feedback loop regulating neurotransmitter release. Thus, preminis could guide the formation of the interneuron network by enhancing neurotransmitter release at recently formed synaptic contacts.
机译:长期以来,人们已经知道微型突触电流代表静止状态下的随机发射器释放,但是关于它们在中枢突触中的性质和功能,还有很多事情要学习。在这项工作中,我们描述了由随机水泡释放后轴突受体的自分泌激活引起的一类新的微型电流(“ preminis”)。小分子中间神经元在发育过程中,小脑interneurons产生的gabergic突触中,preminis是突出的。与同一细胞中普通的微型突触后电流不同,亚阈下去极化可大大增强前置频率,这表明它们产生的膜去极化属于调节神经递质释放的反馈回路。因此,preminis可以通过增强最近形成的突触接触处的神经递质释放来指导神经元间神经网络的形成。

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