嗅觉线索足以引发C57BL/6J小鼠的社交接近行为,但不足以引发食物偏好的社会传递。

Olfactory cues are sufficient to elicit social approach behaviors but not social transmission of food preference in C57BL/6J mice.

作者信息

Ryan Bryce C, Young Nancy B, Moy Sheryl S, Crawley Jacqueline N

机构信息

Neurodevelopmental Disorders Research Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.

出版信息

Behav Brain Res. 2008 Nov 21;193(2):235-42. doi: 10.1016/j.bbr.2008.06.002. Epub 2008 Jun 8.

Abstract

Mouse models for the study of autistic-like behaviors are increasingly needed to test hypotheses about the causes of autism, and to evaluate potential treatments. Both the automated three-chambered social approach test and social transmission of food preference have been proposed as mouse behavioral assays with face validity to diagnostic symptoms of autism, including aberrant reciprocal social interactions and impaired communication. Both assays measure aspects of normal social behavior in the mouse. However, little is known regarding the salient cues present in each assay that elicit normal social approach and communication. To deconstruct the critical components, we focused on delivering discrete social and non-social olfactory and visual cues within the context of each assay. Results indicate that social olfactory cues were sufficient to elicit normal sociability in the three-chambered social approach test. On social transmission of food preference, isolated social olfactory cues were sufficient to induce social investigation, but not sufficient to induce food preference. These findings indicate that olfactory cues are important in mouse social interaction, but that additional sensory cues are necessary in certain situations. The present evidence that both the three-chambered social approach assay and the social transmission of food preference assay require socially relevant cues to elicit normal behavior supports the use of these two assays to investigate autism-related behavioral phenotypes in mice.

摘要

研究自闭症样行为的小鼠模型对于检验自闭症病因的假设以及评估潜在治疗方法的需求日益增加。自动三室社交接近测试和食物偏好的社会传递都已被提议作为具有表面效度的小鼠行为测定方法,用于检测自闭症的诊断症状,包括异常的相互社交互动和沟通障碍。这两种测定方法都测量了小鼠正常社交行为的各个方面。然而,对于每种测定方法中引发正常社交接近和沟通的显著线索知之甚少。为了解构关键成分,我们专注于在每种测定方法的背景下传递离散的社交和非社交嗅觉及视觉线索。结果表明,社交嗅觉线索足以在三室社交接近测试中引发正常的社交能力。在食物偏好的社会传递方面,孤立的社交嗅觉线索足以诱导社交探究,但不足以诱导食物偏好。这些发现表明嗅觉线索在小鼠社交互动中很重要,但在某些情况下还需要额外的感官线索。目前有证据表明,三室社交接近测定法和食物偏好的社会传递测定法都需要与社交相关的线索来引发正常行为,这支持了使用这两种测定方法来研究小鼠中与自闭症相关的行为表型。

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