Name: assessment of dopaminergic homeostasis in mice by use of high-performance liquid chromatography analysis and synaptosomal dopamine uptake
Uploaded: 2017-09-21T12:30:00
Description: Watch this Scientific Journal Video about Assessment of Dopaminergic Homeostasis in Mice by Use of High-performance Liquid Chromatography Analysis and Synaptosomal Dopamine Uptake at JoVE.com

Este trabalho foi financiado pelo UCPH 2016 programa de excelência (U.G., A.R., K.J.), a Fundação Lundbeck (M.R.) a Fundação Lundbeck centro de biomembranas em nanomedicina (U.G.), o nacional Instituto de saúde subsídios P01 DA 12408 (U.G.), o dinamarquês Conselho para a investigação independente - ciências médicas (U.G.).

as orientações da Inspetoria dinamarquês de Experimentação Animal (número de permissão: 2017-15-0201-01160) foi seguido e experiências realizadas em uma instalação totalmente AAALAC credenciado sob a supervisão de um local ao bem-estar dos animal Comitê.
 1. synaptosomal absorção de dopamina (método 1) Nota: Este protocolo é para avaliação paralela de dois cérebros, mas pode ser utilizado com sucesso para realizar experiências de captação DA sy...

<ol>
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A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Preferential+increases+in+nucleus+accumbens+dopamine+after+systemic+cocaine+administration+are+caused+by+unique+characteristics+of+dopamine+neurotransmission.">Preferential increases in nucleus accumbens dopamine after systemic cocaine administration are caused by unique characteristics of dopamine neurotransmission.</a> J Neurosci. 21, 6338-6347 (2001).</li><li>Schonfuss, D., Reum, T., Olshausen, P., Fischer, T., Morgenstern, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Modelling+constant+potential+amperometry+for+investigations+of+dopaminergic+neurotransmission+kinetics+in+vivo.">Modelling constant potential amperometry for investigations of dopaminergic neurotransmission kinetics in vivo.</a> J Neurosci Methods. 112, 163-172 (2001).</li><li>Hoover, B. R., Everett, C. V., Sorkin, A., Zahniser, N. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Rapid+regulation+of+dopamine+transporters+by+tyrosine+kinases+in+rat+neuronal+preparations.">Rapid regulation of dopamine transporters by tyrosine kinases in rat neuronal preparations.</a> J Neurochem. 101, 1258-1271 (2007).</li><li>Hansen, F. H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Missense+dopamine+transporter+mutations+associate+with+adult+parkinsonism+and+ADHD.">Missense dopamine transporter mutations associate with adult parkinsonism and ADHD.</a> J Clin Invest. 124, 3107-3120 (2014).</li><li>Damier, P., Hirsch, E. C., Agid, Y., Graybiel, A. 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H., Koprich, J. B., Fox, S. H., Brotchie, J. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=L-DOPA+pharmacokinetics+in+the+MPTP-lesioned+macaque+model+of+Parkinson's+disease.">L-DOPA pharmacokinetics in the MPTP-lesioned macaque model of Parkinson's disease.</a> Neuropharmacology. 63, 829-836 (2012).</li><li>Mikkelsen, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=MPTP-induced+Parkinsonism+in+minipigs:+A+behavioral,+biochemical,+and+histological+study.">MPTP-induced Parkinsonism in minipigs: A behavioral, biochemical, and histological study.</a> Neurotoxicol Teratol. 21, 169-175 (1999).</li><li>Salvatore, M. F., Pruett, B. 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J., Park, J., Nunes, E. J., Addy, N. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Examination+of+Rapid+Dopamine+Dynamics+with+Fast+Scan+Cyclic+Voltammetry+During+Intra-oral+Tastant+Administration+in+Awake+Rats.">Examination of Rapid Dopamine Dynamics with Fast Scan Cyclic Voltammetry During Intra-oral Tastant Administration in Awake Rats.</a> J Vis Exp. , e52468 (2015).</li><li>Phillips, P. E., Robinson, D. L., Stuber, G. D., Carelli, R. M., Wightman, R. 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Este manuscrito descreve protocolos experimentais úteis para delinear DA homeostase em qualquer modelo do rato da escolha. Nós fornecemos protocolos detalhados para medição de níveis no tecido cerebral de ratos usando HPLC e synaptosomal DA absorção para avaliar funcional DA transporte através de DAT. Os procedimentos, protocolos e limites para o experimento HPLC e ensaio de absorção DA synaptosomal serão elaborados abaixo.
O protocolo de captação synaptosomal pode fornecer uma vi...

Dopamina (DA) é um neurotransmissor moduladora essencial para comportamento motor, recompensa e função cognitiva1,7,8,9. Desequilíbrios na homeostase DA estão implicados nas várias doenças neuropsiquiátricas como transtorno de déficit de atenção e hiperatividade, vício em drogas, depressão e doença de Parkinson1. DA é liberada a partir o neurônio pré-sináptica para a fenda sináptica, onde liga a e ativa receptores na membrana pré e pós-sináptica, transmitindo, assim, mais o sinal. O nível na sinapse após lançamento é espacial e temporalmente controlado por DAT3,10. O transportador sequestra do espaço extracelular e, portanto, sustenta fisiológica DA níveis3,11. Remoção de genética de DAT em camundongos faz com que um fenótipo hiperdopaminérgicas caracterizado por níveis elevados DA sinápticos, depleção de intracelular DA piscinas e mudanças profundas na pós-sináptica DAergic10,12de sinalização.
Aqui, apresentam-se dois protocolos separados, um método de medida DA tecido conteúdo e outro para avaliar a funcionalidade do DAT. combinado com o ensaio de superfície biotinylation descrito por Gabriel et al13 esses dois métodos fornecem informações sobre DA conteúdo e funcionais níveis de DAT para uma avaliação completa DA homeostase. Com estes métodos DA homeostase de vários ratos transgénicos ou modelos de doença pode ser caracterizado e descrito. Estas ferramentas foram implementadas e optimizadas e são de uso padrão em nossos laboratórios. Ensaios atuais têm servido para investigar as consequências sobre a homeostase de alterar o C-terminal da DAT14 ou expressam a recombinase Cre sob a Tirosina Hidroxilase (TH) promotor 5.

<table>
	<tbody>
		<tr>
			<td>COMT inhibitor</td>
			<td>Sigma Aldrich, Germany</td>
			<td>RO-41-0960</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>[3H]-Dopamine</td>
			<td>Perkin-Elmer Life Sciences, Boston, MA, USA</td>
			<td>NET67-3001MC</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Glass microfiber filters</td>
			<td>GF/C Whatman, GE Healthcare Life Sciences, Buckinghamshire</td>
			<td>1822-024</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>HiSafe Scintillation fluid</td>
			<td>Perkin Elmer</td>
			<td>1200-437</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>MicroBeta2</td>
			<td>Perkin Elmer</td>
			<td></td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>BCA Protein Assay kit</td>
			<td>Thermo Scientific Pierce</td>
			<td>23225</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>HEPES</td>
			<td>Sigma Life Science</td>
			<td>H3375</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Sucrose</td>
			<td>Sigma Life Science</td>
			<td>S7903</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>NaCl</td>
			<td>Sigma Life Science</td>
			<td>S3014</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>KCl</td>
			<td>Sigma Life Science</td>
			<td>P9541</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>CaCl2</td>
			<td>Merck KGaA</td>
			<td>10043-52-4</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>MgSO4</td>
			<td>Sigma Life Science</td>
			<td>63065</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Ascorbic Acid</td>
			<td>Sigma Life Science</td>
			<td>A0278</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>D-Glucose</td>
			<td>Sigma Life Science</td>
			<td>G7021</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Pargyline</td>
			<td>Sigma Aldrich</td>
			<td>P-8013</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Desipramine</td>
			<td>Sigma Aldrich</td>
			<td>D3900</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Dopamine</td>
			<td>Sigma Life Science</td>
			<td>H8502</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Cocaine</td>
			<td>Sigma Life Science</td>
			<td>C5776</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Brain matrix</td>
			<td>ASI instruments</td>
			<td>RBM2000C</td>
			<td>For synaptosomal DA uptake protocol</td>
		</tr>
		<tr>
			<td>Cafano mechanical teflon disrupter</td>
			<td>Buch &#38; Holm</td>
			<td>Discontinued</td>
			<td>For synaptosomal DA uptake protocol (homogenization)</td>
		</tr>
		<tr>
			<td>Antec Decade (Amperometric detector)</td>
			<td>Antec, Leiden, The Netherlands</td>
			<td>Discontinued: new model DECADE Elite / Lite&#8482; Electrochemical Detector type 175 and 176</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Avantec 0.22 &#956;m glass filter</td>
			<td>Frisenette ApS, Denmark</td>
			<td>13CP020AS</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Column: Prodigy 3 &#956; ODS-3 C18</td>
			<td>Phenomenex, YMC Europe, Chermbeck, Germany</td>
			<td>Part Number:00A-3300-E0</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>LC solution software</td>
			<td>Shimadzu</td>
			<td>LabSolutions Series Workstation</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Perchlor acid 0.1M</td>
			<td>Fluka Analytical</td>
			<td>35418-500ml</td>
			<td>For HPLC protocol (Tissue preparation)</td>
		</tr>
		<tr>
			<td>EDTA</td>
			<td>Sigma</td>
			<td>E5134-50g</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Natriumdihydrogenphosphar</td>
			<td>Bie&#38;Berntsen</td>
			<td>1.06346 1000g</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Sodium 1-octanesulfonate monohydrate</td>
			<td>Aldrich</td>
			<td>74885 -10g</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Acetonitrile, isocratic HPLC grade</td>
			<td>Scharlau</td>
			<td>AC03402500</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Filtre 0.22um</td>
			<td>Frisenette ApS, Denmark</td>
			<td>Avantec 13CP020AS</td>
			<td>For HPLC protocol (Tissue preparation)</td>
		</tr>
		<tr>
			<td>ortho-Phosphoric acid 85%</td>
			<td>Merck</td>
			<td>1.00563. 1000ml</td>
			<td>For HPLC protocol</td>
		</tr>
		<tr>
			<td>Electrode</td>
			<td>Antec, Leiden, The Netherlands</td>
			<td>AN1161300</td>
			<td>For HPLC protocol (see manual online)</td>
		</tr>
		<tr>
			<td>Detector program on DECADE II electrochemical detector</td>
			<td>Antec, Leiden, The Netherlands</td>
			<td>Lite&#8482; Electrochemical Detector type 175 and 176</td>
			<td>For HPLC protocol</td>
		</tr>
	</tbody>
</table>

assessment of dopaminergic homeostasis in mice by use of high-performance liquid chromatography analysis and synaptosomal dopamine uptake

Dopamina (DA) é um neurotransmissor moduladora, controlando a atividade motora, processos de recompensa e função cognitiva. Comprometimento da neurotransmissão dopaminérgico (DAergic) é fortemente associado com várias doenças associadas a sistema nervoso central, tais como a doença de Parkinson, transtorno déficit-hiperatividade e dependência de drogas1,2 ,3,4. Delinear os mecanismos de doença que envolvem o desequilíbrio DA é criticamente dependente de modelos animais para imitar os aspectos das doenças, e assim protocolos que avaliam a partes específicas do DA homeostase são importantes para fornecer novos insights e possível terapêutico alvos para estas doenças.
Aqui, apresentamos dois protocolos experimentais úteis que quando combinados fornecem uma leitura funcional do sistema de DAergic em camundongos. Parâmetros bioquímicos e funcionais na homeostase DA são obtidos através da avaliação dos níveis DA e de funcionalidade de transporte (DAT) dopamina5. Ao investigar o sistema DA, a capacidade de medir confiantemente níveis endógenos do cérebro de um adulto é essencial. Portanto, apresentamos como realizar a cromatografia líquida de alto desempenho (HPLC) no tecido cerebral de ratos para determinar os níveis de DA. Podemos realizar o experimento no tecido do striatum dorsal (dStr) e núcleo accumbens (NAc), mas o método também é apropriado para outras áreas do cérebro DA-inervada.
DAT é essencial para a recaptação para o terminal pré-sináptica, assim, controlar a atividade temporal e espacial de DA. lançado Saber os níveis e a funcionalidade do DAT no striatum é de grande importância na avaliação DA homeostase. Aqui, nós fornecemos um protocolo que permite deduzir simultaneamente informações sobre níveis de superfície e função usando um ensaio de absorção de synaptosomal6 DA.
Atuais métodos combinados com protocolos padrão immunoblotting fornecem o pesquisador com ferramentas relevantes para caracterizar o sistema de DAergic.

Protocolo de captação DA corrente (Figura 1) inclui todas as etapas necessárias para avaliar a funcionalidade do DAT em sinaptossomas de ratos. Nossos dados representativos do método DA absorção (Figura 2) mostra uma curva de saturação com dados não corrigidas (Figura 2B) e ajustados dados (Figura 2A). A curva de saturação mostra captação de ratos tipo selva...

Watch this Scientific Journal Video about Assessment of Dopaminergic Homeostasis in Mice by Use of High-performance Liquid Chromatography Analysis and Synaptosomal Dopamine Uptake at JoVE.com

Assessment of Dopaminergic Homeostasis in Mice by Use of High-performance Liquid Chromatography Analysis and Synaptosomal Dopamine Uptake

Avaliação da homeostase Dopaminergic em camundongos pelo uso de análise de cromatografia líquida de alta performance e captação da dopamina Synaptosomal

Absorção de dopamina synaptosomal e ferramentas experimentais de cromatografia líquida de alto desempenho análise representam para investigar a homeostase de dopamina em camundongos avaliando-se a função do transportador de dopamina e níveis de dopamina no tecido striatal, respectivamente. Aqui nós apresentamos protocolos para medir o teor de tecido de dopamina e avaliar a funcionalidade do transportador de dopamina.

Dopamine (DA) is a modulatory neurotransmitter controlling motor activity, reward processes and cognitive function. Impairment of dopaminergic (DAergic) ...

Research

JoVE Journal

Neuroscience

Assessment of Motor Balance and Coordination in Mice using the Balance Beam

Avaliação do Equilíbrio e Coordenação Motor em camundongos usando o feixe de equilíbrio

Brain injury, genetic manipulations, and pharmacological treatments can result in alterations of motor skills in mice.  Fine motor coordination and ...

Neurociência

T-maze Forced Alternation and Left-right Discrimination Tasks for Assessing Working and Reference Memory in Mice

T-maze Alternância forçado e Tarefas esquerda-direita para a Avaliação da Discriminação de Trabalho e Memória de Referência em Ratos

Forced alternation and left-right discrimination tasks using the T-maze have been widely used to assess working and reference memory, respectively, in ...

Reproducible Mouse Sciatic Nerve Crush and Subsequent Assessment of Regeneration by Whole Mount Muscle Analysis

Reprodutível mouse esmagamento do nervo ciático e subsequente avaliação de Regeneração por Análise Whole Mount muscular

Regeneration in the peripheral nervous system (PNS) is widely studied both for its relevance to human disease and to understand the robust regenerative ...

Assessing Neurodegenerative Phenotypes in Drosophila Dopaminergic Neurons by Climbing Assays and Whole Brain Immunostaining

Assessing Neurodegenerative Phenotypes in Drosophila Dopaminergic Neurons by Climbing Assays and Whole Brain Immunostaining

Avaliando fenótipos Neurodegenerativas em<em&gt; Drosophila</em&gt; Neurônios dopaminérgicos subindo Ensaios e toda Imunocoloração Cérebro

Drosophila melanogaster is a valuable model organism to study aging and pathological degenerative processes in the nervous system. The advantages of the ...

A High Content Imaging Assay for Identification of Botulinum Neurotoxin Inhibitors

A alta Ensaio imagem Conteúdo de Identificação da neurotoxina botulínica Inibidores

Synaptosomal-associated protein-25 (SNAP-25) is a component of the soluble NSF attachment protein receptor (SNARE) complex that is essential for synaptic ...

Environmental Modulations of the Number of Midbrain Dopamine Neurons in Adult Mice

Modulações Ambientais do número de Midbrain dopamina Neurônios no Adulto Mice

Long-lasting changes in the brain or &#8216;brain plasticity&#8217; underlie adaptive behavior and brain repair following disease or injury. Furthermore, ...

Assessment of Dendritic Arborization in the Dentate Gyrus of the Hippocampal Region in Mice

Avaliação de dendríticas Arborização no giro dentado do hipocampo em Ratos Região

Dendritic arborization has been shown to be a reliable marker for examination of structural and functional integrity of neurons. Indeed, the complexity ...

Identification of Dopamine D1-Alpha Receptor Within Rodent Nucleus Accumbens by an Innovative RNA In Situ Detection Technology

Identification of Dopamine D1-Alpha Receptor Within Rodent Nucleus Accumbens by an Innovative RNA In Situ Detection Technology

Identificação de Receptor de dopamina D1-alfa dentro roedores núcleo Accumbens por uma inovador RNA In Situ tecnologia da deteção

In the central nervous system, the D1-alpha subtype receptor (Drd1&#945;) is the most abundant dopamine (DA) receptor, which plays a vital role in ...

Single Synapse Indicators of Glutamate Release and Uptake in Acute Brain Slices from Normal and Huntington Mice

Indicadores únicos de sinapse de liberação de glutamato e absorção em fatias cerebrais agudas de ratos normais e huntington

Synapses are highly compartmentalized functional units that operate independently on each other. In Huntington&#39;s disease (HD) and other ...

Semi-Quantitative Determination of Dopaminergic Neuron Density in the Substantia Nigra of Rodent Models using Automated Image Analysis

Determinação semi-quantitativa da densidade do neurônio dopaminérgico na Substantia Nigra dos Modelos de Roedores usando análise automatizada de imagem

Estimation of the number of dopaminergic neurons in the substantia nigra is a key method in pre-clinical Parkinson's disease research. Currently, unbiased ...