A utilização do campo aberto Maze medir Locomotor e Ansiedade-like Comportamento no Mice

Summary

A protocol is provided to use an Open Field Maze to access general locomotor activity, anxiety and emotionality in a laboratory mouse model.

Abstract

Animal models have proven to be invaluable to researchers trying to answer questions regarding the mechanisms of behavior. The Open Field Maze is one of the most commonly used platforms to measure behaviors in animal models. It is a fast and relatively easy test that provides a variety of behavioral information ranging from general ambulatory ability to data regarding the emotionality of the subject animal. As it relates to rodent models, the procedure allows the study of different strains of mice or rats both laboratory bred and wild-captured. The technique also readily lends itself to the investigation of different pharmacological compounds for anxiolytic or anxiogenic effects. Here, a protocol for use of the open field maze to describe mouse behaviors is detailed and a simple analysis of general locomotor ability and anxiety-related emotional behaviors between two strains of C57BL/6 mice is performed. Briefly, using the described protocol we show Wild Type mice exhibited significantly less anxiety related behaviors than did age-matched Knock Out mice while both strains exhibited similar ambulatory ability.

Introduction

The Open Field Maze (OFM) was initially developed in 1934 as a test to measure emotionality in rodents¹. It has attained the status of being one of the most widely used measures of behavior in animal psychology². It provides an easy and fairly rapid assessment of well-defined behaviors requiring no training to the test subject and little to no specialized training for the human administering the test. These attributes have led to wide-spread use of the open field maze in research extended to other animal species such as calves, pigs, rabbits, primates, honeybees and lobsters³. Part of its popularity arises from the fact that the psycho....

Protocol

NOTA: Todos os procedimentos aqui realizados foram submetidos e aprovados pelo IACUC (Office of Compliance Research) e foram realizadas seguindo as diretrizes do NIH. Ratos usado no paradigma testes comportamentais eram ingênuas e não utilizados para outros testes. O C57BL / 6 selvagem Tipo e bater para fora ratos utilizados no presente protocolo têm sido descritos anteriormente ⁹ e os dados aqui apresentados são de que manuscrito.

1. Preparação da sala de teste e campo aberto.......

Discussion

O campo aberto Maze é uma das plataformas mais utilizadas em estudos de comportamento dos animais. Uma série de importantes parâmetros convencionais e etológicas ^2,4 podem ser coletadas e analisadas durante a execução da OFM. Estes dados permitem que o pesquisador para medir comportamentos que variam de actividade global locomotor a comportamentos emocionais relacionados à ansiedade ^8. No entanto, o uso de OFM não é sem suas deficiências. Uma questão de confusão é a ampla gama de vari?.......

Materials

Name	Company	Catalog Number	Comments
Multi Unit Open Field Test	San Diego Instruments, Inc.	White 7001-0354	Any single or multi unit open field maze can be used
SMART DT Tracking Software	PanLab/Harvard Apparatus	76-0695	Any tracking software can be utilized with this protocol
Sony 990x Video Camera Recorder	Sony	CCD-TRV328	Any suitable video camera can be attached to computer for recording tracking profiles.