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oxytocin

妇产

关键词妇产 药物 激素

词汇介绍

拓展阅读

解析

oxytocin    英 [ɒksɪ'təʊsɪn]  

释    义  n. [药] 催产素;缩宫素;脑下垂体后叶荷尔蒙之一种

同根词   oxytocic

adj. oxytocic 催产的  n. oxytocic 催产剂

例    句   Your heart has receptors for this hormone, and oxytocin helps heart cells regenerate and heal from any stress-induced damage. 你的心脏有催产素受体,它能帮助心肌细胞在再生生和从压力导致的损伤中恢复。

概述

催产素又称为缩宫素,是脑垂体后叶激素的一种多肽激素,由丘脑下部的视上核及室旁核的神经元细胞合成。它具有收缩子宫、加快分娩过程的作用,还在大脑中发挥作用,影响我们的情感情绪、社会行为。临床上,催产素的主要作用是选择性兴奋子宫平滑肌,增强子宫收缩力及收缩频率,广泛应用于催产、引产、预防及治疗产后出血等。 分泌调节 催产素的分泌主要受神经反射性的调节。婴儿吸吮乳头时,刺激信息传入到下丘脑视上核和室旁核,引起催产素分泌,使乳腺射乳,称为射乳反射,属于神经内分泌反射。在此基础上可形

The awareness of the scared - context dependent influence of oxytocin on brain function.复制标题

催产素对脑功能的恐惧-语境依赖性影响的意识。

发表时间:2019-07-17

影响因子:3.4

作者: Baettig L

期刊:Brain Imaging Behav

Oxytocin is both a hormone and a neurotransmitter and has been originally recognized for its role in childbirth and lactation. Later, it became widely known as a "cuddle hormone" that induces trusting behavior towards strangers and reduces social stress and anxiety. Several studies showed that oxytocin influences empathic behavior and has prosocial effects. The anterior cingulate cortex and the anterior insula are brain regions that are active when humans observe fear in others. Therefore, the aim of this study was to investigate whether oxytocin administration affects activity in these regions depending on whether a threat is directed at another person (empathy) compared to when the threat is directed at the subject itself (fear). Our findings demonstrate increased anterior cingulate cortex activation after oxytocin administration in the fear, but not in the empathy condition. Furthermore, oxytocin administration was associated with deceased anterior insula activity in the empathy condition. However, our findings do not support the idea that oxytocin generally augments activity in brain regions associated with empathy.

译文

催产素既是激素又是神经递质,最初因其在分娩和哺乳期的作用而被认可。后来,它被广泛称为“拥抱激素”,引起对陌生人的信任行为,减少社会压力和焦虑。一些研究表明催产素影响移情行为并具有亲社会效应。前扣带皮层和前岛叶是大脑区域,当人类在其他人身上观察到恐惧时它们是活跃的。因此,这项研究的目的是调查催产素给药是否会影响这些地区的活动,这取决于威胁是针对另一个人(同理心),而威胁是针对受试者本身(恐惧)。我们的研究结果表明,在恐惧症中施用催产素后,前扣带皮层激活增加,但在移情条件下则没有。此外,催产素给药与移情条件下死亡的前岛叶活动有关。然而,我们的研究结果并不支持催产素通常会增加与移情相关的大脑区域活动的观点。