Defining populations of dorsal horn interneurons.

Defining populations of dorsal horn interneurons.
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DOI:
10.1097/j.pain.0000000000002067
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发表时间:
2020-11
期刊:
影响因子:
7.4
通讯作者:
Hughes DI
Hughes DI
中科院分区:
医学1区
文献类型:
--
作者:
Graham BA;Hughes DI

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脊髓背角内的神经元回路在我们如何最终感知感官输入中起着至关重要的作用,这些回路的破坏会导致感觉和慢性疼痛状态的改变。为了理解这些回路在健康和疾病中如何处理感觉信息,有必要识别单个神经元成分,确定它们如何连接,并定义这些通路的功能意义。在这里,我们概述了当前用于更好地定义中间神经元种群及其在背角内形成的电路的策略。中间神经元占脊髓背角所有神经元1的99%,在调节模式特异性回路中发挥关键作用,最终影响我们对传入输入的感知。22这些细胞代表了药物干预的潜在目标,以控制各种形式的慢性疼痛,但要实现这一目标,我们必须首先确定它们在正常条件下对不同脊髓回路的贡献,并确定它们在病理状态下如何变化。鉴于背角中间神经元在形态、神经化学和功能特性方面具有多样性,确定一系列区分特征来表征离散种群可能具有挑战性。在这篇PAIN图片文章中,我们概述了可用于定义不同中间神经元群的关键特征,并提供了一个例子,说明这种方法有助于识别与触觉异常性疼痛发展有关的脊髓中间神经元群。
Neuronal circuits within the spinal dorsal horn play a crucial role in how we ultimately perceive sensory inputs, and disruption to these circuits can lead to altered sensation and chronic pain states. To understand how these circuits process sensory information in health and disease, it is necessary to identify the individual neuronal components, determine how they are connected, and define the functional significance of these pathways. Here, we provide an overview of current strategies used to better define interneuron populations and the circuits they form within the dorsal horn.Interneurons account for 99% of all neurons in the spinal dorsal horn 1 and play critical roles in modulating modality-specific circuits to ultimately affect our perception of afferent input. 22 These cells represent a potential target for pharmacological intervention to manage various forms of chronic pain, but to achieve this we must first define their contributions to distinct spinal circuits under normal conditions and determine how these change in pathological states. Given that dorsal horn interneurons are diverse in terms of their morphological, neurochemical, and functional properties, identifying a series of distinguishing features to characterise discrete populations can be challenging. In this PAIN Pictured article, we outline key features that can be used to define distinct interneuron groups and provide an example where this approach has helped identify a population of spinal interneurons that are implicated in the development of tactile allodynia.
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发表时间: 2002-04-01
影响因子: 5.5
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发表时间: 2002-05-15
影响因子: 5.5
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