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The socially enriched environment test: a new approach to evaluate social behavior in a mouse model of social anxiety disorder
Learning & Memory ( IF 2 ) Pub Date : 2022-11-01 , DOI: 10.1101/lm.053627.122
Zineb Boudjafad 1 , Asmae Lguensat 1 , Kenza Elmardadi 1 , Asma Dahi 1 , Mohamed Bennis 1 , Saadia Ba-M'hamed 1 , René Garcia 2
Affiliation  

Social anxiety disorder (SAD) is a common anxiety disorder characterized by a marked fear of social situations. Treatments for SAD, including exposure therapy and medication, are not satisfactory for all patients. This has led to the development of several paradigms to study social fear in rodents. However, there are still some social impairments observed in SAD patients that have never been examined in rodent models. Indeed, social situations avoided by SAD patients include not only social interactions but also public performances and being observed by others. Nevertheless, tests used to assess sociability in rodents evaluate mostly social interaction in pairs. Thus, we developed a new test—a socially enriched environment test—that evaluates sociability within a group of three unfamiliar conspecifics in an enriched environment. In this study, we induced a SAD-like behavior (i.e., social fear) in male mice using social fear conditioning (SFC) and then tested social fear using the socially enriched environment test and the three-chamber test. Finally, we tested the effects of fear extinction and acute diazepam treatment in reversing social fear. Results revealed, in conditioned mice, decreased object exploration in proximity to conspecifics, social interaction, and mouse-like object exploration. Extinction training, but not acute diazepam treatment, reversed SFC-induced behavioral changes. These findings demonstrate that the socially enriched environment test provides an appropriate behavioral approach to better understand the etiology of SAD. This test may also have important implications in the exploration of new treatments.

中文翻译:

社交丰富的环境测试:一种评估社交焦虑症小鼠模型社交行为的新方法

社交焦虑症(SAD)是一种常见的焦虑症,其特征是对社交场合的明显恐惧。SAD 的治疗,包括暴露疗法和药物治疗,并非对所有患者都满意。这导致了几种范式的发展来研究啮齿动物的社会恐惧。然而,在 SAD 患者中仍然观察到一些从未在啮齿动物模型中检查过的社会障碍。事实上,SAD 患者避免的社交场合不仅包括社交互动,还包括公开表演和被他人观察。然而,用于评估啮齿动物社交能力的测试主要评估成对的社交互动。因此,我们开发了一种新的测试——一种社会丰富的环境测试——在丰富的环境中评估一组三个不熟悉的同种动物的社交能力。在这项研究中,我们使用社交恐惧条件反射 (SFC) 在雄性小鼠中诱导了类似 SAD 的行为(即社交恐惧),然后使用社交丰富的环境测试和三室测试来测试社交恐惧。最后,我们测试了恐惧消退和急性地西泮治疗在逆转社会恐惧方面的效果。结果显示,在条件允许的小鼠中,减少了接近同种动物、社交互动和类似老鼠的物体探索的物体探索。灭绝训练,但不是急性地西泮治疗,逆转了 SFC 引起的行为变化。这些发现表明,社会丰富的环境测试提供了一种适当的行为方法,可以更好地了解 SAD 的病因。该测试也可能对探索新疗法具有重要意义。社交恐惧)在雄性小鼠中使用社交恐惧条件反射(SFC),然后使用社交丰富的环境测试和三室测试来测试社交恐惧。最后,我们测试了恐惧消退和急性地西泮治疗在逆转社会恐惧方面的效果。结果显示,在条件允许的小鼠中,减少了接近同种动物、社交互动和类似老鼠的物体探索的物体探索。灭绝训练,但不是急性地西泮治疗,逆转了 SFC 引起的行为变化。这些发现表明,社会丰富的环境测试提供了一种适当的行为方法,可以更好地了解 SAD 的病因。该测试也可能对探索新疗法具有重要意义。社交恐惧)在雄性小鼠中使用社交恐惧条件反射(SFC),然后使用社交丰富的环境测试和三室测试来测试社交恐惧。最后,我们测试了恐惧消退和急性地西泮治疗在逆转社会恐惧方面的效果。结果显示,在条件允许的小鼠中,减少了接近同种动物、社交互动和类似老鼠的物体探索的物体探索。灭绝训练,但不是急性地西泮治疗,逆转了 SFC 引起的行为变化。这些发现表明,社会丰富的环境测试提供了一种适当的行为方法,可以更好地了解 SAD 的病因。该测试也可能对探索新疗法具有重要意义。
更新日期:2022-10-17
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