V2EX metabotropic

Metabotropic

释义 Definition

(尤指神经科学)代谢型的:指一种受体或信号传导方式,通过细胞内代谢/信号级联(常见为G蛋白与第二信使系统)间接产生效应,通常起效较慢但作用更持久。常见搭配:metabotropic receptor(代谢型受体)。另有较少见含义指“与代谢变化相关的”。

发音 Pronunciation (IPA)

/mtbtrpk/

例句 Examples

Metabotropic receptors act more slowly than ionotropic receptors.
代谢型受体的作用通常比离子型受体更慢。

In many neurons, metabotropic signaling can amplify a small neurotransmitter signal into a longer-lasting change in cellular activity through second messengers.
在许多神经元中,代谢型信号传导可通过第二信使把较小的神经递质信号放大为更持久的细胞活动变化。

词源 Etymology

metabotropic 由 **meta-**(“变化、转变”)+ -tropic(源自希腊语 tropos,“转向、改变方式/方向”)构成。该词在生理与神经科学语境中,用来强调受体效应并非直接打开离子通道,而是“转而”通过细胞内信号通路引发一连串变化。

相关词 Related Words

文学与著作 Literary & Notable Works

  • Principles of Neural Science(Eric R. Kandel 等):讨论代谢型受体与神经调制机制。
  • Neuroscience(Dale Purves 等):对比 metabotropic 与 ionotropic 受体的信号特点。
  • The Synaptic Organization of the Brain(Gordon M. Shepherd):涉及代谢型受体在突触功能中的作用。
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