Name: a quick phenotypic neurological scoring system for evaluating disease progression in the sod1-g93a mouse model of als
Uploaded: 2015-10-06T15:00:00
Description: Watch this Scientific Journal Video about A Quick Phenotypic Neurological Scoring System for Evaluating Disease Progression in the SOD1-G93A Mouse Model of ALS at JoVE.com

We would like to acknowledge Beth Levine for critically reviewing the manuscript, Valerie Tassinari for developing the genotyping protocol, and Matt Ferola and Carlos Maya for their exceptional animal care.

Todos os experimentos são conduzidos de acordo com os protocolos descritos pelos Institutos Nacionais de Saúde Guia para o Cuidado e Uso de Animais e foram aprovados pelo cuidado com os animais institucional e uso comitê do ALS TDI (IACUC). 1. Os animais, habitação e desenho do estudo Nota: O rato colônia SOD1-G93A foi derivado do elevado número de cópias B6SJLTgN (SOD1G93A) estirpe 1Gur originalmente produzido por Gurney et al 7.. A col...

<ol>
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Neste relatório, nós descrevemos um protocolo de vídeo rápido e simples que, se aplicada corretamente, é capaz de avaliar de forma confiável a progressão da doença em camundongos SOD1-G93A e identificar as alterações induzidas pela droga. Embora diferentes grupos desenvolveram sistemas de pontuação fenotípicas para ratos SOD1 G93A-8-10, que muitas vezes não fornecem detalhes suficientes sobre o procedimento e são insuficientes para replicação. Como resultado, sistemas de pontuação são rara...

Desde o seu desenvolvimento em meados de 1990, o modelo de camundongo transgênico SOD1-G93A tem sido o modelo animal mais utilizado da esclerose lateral amiotrófica (ELA) 1. Este modelo de ratinho transgénico foi geneticamente manipulada para sobre-expressar uma forma mutante do gene de Cu / Zn superóxido dismutase humana 1 (SOD1) portador da ALS-glicina associada a mutação da alanina no aminoácido 93 (G93A). A mutação G93A é uma das muitas mutações no gene SOD1 que colectivamente make-up de cerca de um quinto casos de ALS familiar 2. O modelo SOD1-G93A tornou-se uma força de trabalho de pesquisa de desenvolvimento de drogas ALS porque, além de sua óbvia ligação genética para ALS, ele recapitula muitas das características patológicas do ALS em seres humanos, como a perda do neurônio motor, fraqueza muscular progressiva e atrofia, com eventual paralisia e morte 3. Embora, como é frequentemente o caso com os modelos animais transgénicos, existe uma bi inerenteological variabilidade associada com os ratos SOD1 G93A-. Scott et ai. ter determinado que as coortes de pelo menos 24 ratinhos com equilíbrio de gênero de correspondência de maca são necessários em projetos de estudo fármaco-eficácia, a fim de superar o ruído criado pela variabilidade biológica 4. O grande número de animais necessários nestes estudos, em combinação com a progressão da doença agressiva e a necessidade de acompanhamento diário proíbe a utilização de, técnicas demoradas e potencialmente estressantes elaboradas para medir força e função neuromuscular (por exemplo, eletromiografia, força de preensão, rotorod , etc). Em vez disso, ele destaca a necessidade de uma ferramenta de triagem in vivo que avalia de forma confiável a função neuromuscular de camundongos SOD1-G93A de uma forma rápida. No ALS TDI foi desenvolvido um protocolo que permite a avaliação confiável da função neuromuscular de camundongos SOD1 G93A-em menos de 30 segundos por rato em média. Este protocolo encompasses avaliação diária da função dos membros posteriores utilizando um sistema simples de pontuação neurológica (NeuroScore), que é descrita neste relatório na imprensa e em vídeo. NeuroScore está focada em função dos membros posteriores porque os déficits dos membros posteriores são os primeiros relatados sinal neurológico da doença nos ratos SOD1 G93A-5,6. Além disso, o protocolo desenvolvido pela ALS TDI fornece uma avaliação imparcial do início da paresia (paralisia leve ou parcial), progressão e gravidade da paralisia e é sensível o suficiente para identificar as alterações induzidas pela droga na progressão da doença.

<table border="0" cellpadding="0" cellspacing="0">
	<tbody>
		<tr>
			<td>B6SJLTgN(SOD1G93A)1Gur strain</td>
			<td>The Jackson Laboratory, Bar Harbor, ME</td>
			<td>002726</td>
			<td>Strain of mice used in this study</td>
		</tr>
		<tr>
			<td>Breeders</td>
			<td>Biomedical Research Models, Inc., Worcester, MA</td>
			<td></td>
			<td>Colony maintainance</td>
		</tr>
		<tr>
			<td>Scale</td>
			<td>Navigator OHAUS, Parsippany, NJ</td>
			<td>Model N14120</td>
			<td>Used to weigh mice</td>
		</tr>
		<tr>
			<td>Nutra-GelH</td>
			<td>Bio-Serv, Flemington, NJ</td>
			<td>#S4798</td>
			<td>Wet food provided to sick mice</td>
		</tr>
		<tr>
			<td>Irradiated Lab Animal Diet</td>
			<td>Harlan, Indianapolis, IN</td>
			<td>2918-111914M</td>
			<td>Chow diet</td>
		</tr>
		<tr>
			<td>Lab-grade Sani-chips</td>
			<td>Harlan Teklad, Indianapolis, IN</td>
			<td>7090</td>
			<td>Bedding</td>
		</tr>
		<tr>
			<td>JMPH&#160;</td>
			<td>SAS Institute, Inc., SAS Campus Drive, Cary, NC</td>
			<td>&#160;v10.0.2</td>
			<td>Statistical software</td>
		</tr>
		<tr>
			<td>Microsoft Excel</td>
			<td>Microsoft, One Microsoft Way, Redmond, WA</td>
			<td>Excel 2013 (v 15.0)</td>
			<td>Spreadsheet software</td>
		</tr>
		<tr>
			<td>GraphPad Prism 5</td>
			<td>GraphPad software Inc., La Jolla, CA</td>
			<td>v5.4</td>
			<td>Graphing software</td>
		</tr>
		<tr>
			<td>Mouse Huts</td>
			<td>Bio-Serv, Flemington, NJ</td>
			<td>K3272</td>
			<td>For environmental enrichment</td>
		</tr>
	</tbody>
</table>

a quick phenotypic neurological scoring system for evaluating disease progression in the sod1-g93a mouse model of als

The SOD1-G93A transgenic mouse is the most widely used animal model of amyotrophic lateral sclerosis (ALS). At ALS TDI we developed a phenotypic screening protocol, demonstrated in video herein, which reliably assesses the neuromuscular function of SOD1-G93A mice in a quick manner. This protocol encompasses a simple neurological scoring system (NeuroScore) designed to assess hindlimb function. NeuroScore is focused on hindlimb function because hindlimb deficits are the earliest reported neurological sign of disease in SOD1-G93A mice. The protocol developed by ALS TDI provides an unbiased assessment of onset of paresis (slight or partial paralysis), progression and severity of paralysis and it is sensitive enough to identify drug-induced changes in disease progression. In this report, the combination of a detailed manuscript with video minimizes scoring ambiguities and inter-experimenter variability thus allowing for the protocol to be adopted by other laboratories and enabling comparisons between studies taking place at different settings. We believe that this video protocol can serve as an excellent training tool for present and future ALS researchers.

Os dados da contagem neurológicos para 90 do sexo masculino e 94 do sexo feminino não-tratados ratos SOD1 G93A-estudou em ALS TDI durante 2014 foram avaliados. Os resultados mostram que os ratos macho têm tipicamente uma progressão da doença mais agressivo do que os ratos do sexo feminino, tal como evidenciado por uma proporção maior da sua vida útil no NS 1 em comparação com as fêmeas. NS 2 e 3 NS ocorrem com praticamente a mesma frequência de diferentes sexos. 0 NS foi excluído da análise, porque é cons...

Watch this Scientific Journal Video about A Quick Phenotypic Neurological Scoring System for Evaluating Disease Progression in the SOD1-G93A Mouse Model of ALS at JoVE.com

A Quick Phenotypic Neurological Scoring System for Evaluating Disease Progression in the SOD1-G93A Mouse Model of ALS

This video protocol describes a sensitive, reliable, and quick method for evaluating the neuromuscular deficits in a transgenic mouse model of amyotrophic lateral sclerosis.

Um sistema de pontuação neurológica rápida fenotípica para a Avaliação de progressão da doença na SOD1 G93A-Rato modelo de ALS

The SOD1-G93A transgenic mouse is the most widely used animal model of amyotrophic lateral sclerosis (ALS). At ALS TDI we developed a phenotypic screening ...

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