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acA2040-25gc - Basler ace

Company: Basler
Catalog#: 105716
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Assaying Thermo-nociceptive Behavior in Drosophila Larvae
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2018-02-20
[Abstract]  Thermo-nociception, the detection and behavioral response to noxious temperatures, is a highly conserved action to avoid injury and ensure survival. Basic molecular mechanisms of thermal responses have been elucidated in several model organisms and are of clinical relevance as thermal hypersensitivity (thermos-allodynia) is common in neuropathic pain syndromes. Drosophila larvae show stereotyped escape behavior upon noxious heat stimulation, which can be easily quantified and coupled with molecular genetic approaches. It has been successfully used to elucidate key molecular components and circuits involved in thermo-nociceptive responses. We provide a detailed and updated protocol of this previously described method (Tracey et al., 2003) to apply a defined local heat ... [摘要]  热伤害感受,对有害温度的检测和行为反应,是一种高度保守的行为,可避免受伤并确保生存。 热反应的基本分子机制已在几种模型生物体中阐明,并且与神经性疼痛综合征中常见的热超敏反应(热异常性疼痛)相关,因此具有临床相关性。 果蝇幼虫在有毒热刺激下显示刻板脱逃行为,其可以容易地量化并且与分子遗传学方法结合。 它已被成功地用于阐明参与热伤害性反应的关键分子组分和电路。 我们提供了一个详细的和更新的这个前面描述的方法(Tracey et al。,2003年)的协议,使用快速调节的热探针将确定的局部热刺激应用于幼虫。

【背景】果蝇幼虫对40°C以上的热刺激具有逃避反应(Tracey等人,2003),可能防止细胞损伤和损伤。伤害性感觉神经元,IV类树突状树枝状化(C4da)神经元的激活对于这种反应是必需和充分的(Hwang等人,2007)。使用加热探针(> 40°C,图1,图5,图6)应用局部热伤害性刺激通常会引发刻板行为,包括沿着幼虫体轴360°滚动和增加运动速度。先前的研究已经表明瞬时受体电位(Trp)通道无痛(Tracey等人,2003)和TrpA1(Neely等人,2011; Zhong等人,因为它们在C4da神经元中的表达和功能是伤害性逃避反应所必需的,所以它们是对该系统中的有害热应答的感觉通道。

虽然对幼虫的机械和热水伤害性刺激产生非常类似的滚动逃避反应(Hwang ...

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