Adolescent social rejection alters pain processing in a CB1 receptor dependent manner

Adolescent social rejection alters pain processing in a CB1 receptor dependent manner
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青少年社会排斥以 CB1 受体依赖性方式改变疼痛处理

DOI:
10.1016/j.euroneuro.2016.04.007
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发表时间:
2016
影响因子:
5.6
通讯作者:
Schneider
Schneider
中科院分区:
医学2区
文献类型:
--
作者:
Schneider;Spanagel;Schneider

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社会排斥的经历是痛苦的一个主要来源,特别是青少年时期的同伴排斥与各种精神疾病有关。此外,实验诱导的急性社会排斥改变了人类的疼痛感知,暗示了社会和身体疼痛的重叠神经回路。我们最近证明,饲养青春期Wistar大鼠与不足,不好玩的游戏伙伴(费舍尔344)持续降低疼痛敏感性,虽然在社会交往中调解厌恶的详细机制仍然不确定。与本研究中,我们研究了行为表现在急性相互作用的雌性青春期Wistar大鼠与年龄匹配的同品系的合作伙伴或大鼠从Fischer 344株。我们在这里确定的低反应性嬉戏的攻击,这似乎是社会发挥的特点,在Fischer 344应变,作为一个主要的厌恶组件的青少年Wistar动物在交叉应变遇到,随后减少热痛反应。详细的行为分析进一步揭示了与同品系对照组相比,与Fischer 344大鼠配对的青春期Wistar动物在50 kHz下的超声发声增加,嬉戏攻击的频率增加。最后,在社交接触之前急性注射阈下剂量的大麻素1型受体反向激动剂/拮抗剂SR 141716,消除了Wistar/Fischer 344对中增强的游戏请求行为以及青春期Wistar大鼠中排斥经历的行为后果,进一步强调了内源性大麻素系统在介导社会行为和社会痛苦的影响中的重要调节作用。
Experiences of social rejection represent a major source of distress and in particular peer rejection during adolescence has been implicated in various psychiatric disorders. Moreover, experimentally induced acute social rejection alters pain perception in humans, implicating overlapping neurocircuits for social and physical pains. We recently demonstrated that rearing of adolescent Wistar rats with inadequate, less playful play partners (Fischer 344) persistently decreases pain sensitivity, although the detailed mechanisms mediating the aversiveness during the social encounter remained unsettled. With the present study we examined the behavioral performance during acute interaction of female adolescent Wistar rats with either age-matched same-strain partners or rats from the Fischer 344 strain. We here identify the low responsiveness upon playful attacks, which appears to be characteristic for social play in the Fischer 344 strain, as one of the main aversive components for adolescent Wistar animals during cross-strain encounters, which subsequently diminishes thermal pain reactivity. A detailed behavioral analysis further revealed increased ultrasonic vocalization at 50 kHz and an increased frequency of playful attacks for adolescent Wistar animals paired with a Fischer 344 rat compared to same-strain control pairs. Finally, an acute injection of a subthreshold dose of the cannabinoid type 1 receptor inverse agonist/antagonist SR141716 before the social encounter abolished enhanced play-soliciting behavior in Wistar/Fischer 344 pairs as well as the behavioral consequences of the rejection experience in adolescent Wistar rats, further emphasizing an important modulatory role of the endocannabinoid system in mediating the effects of social behavior and social pain.
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发表时间: 2016-01
影响因子: 3.6
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