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Entree

Analysis of nitric oxide synthase in dopaminergic and non dopaminergic neurons in experimental Parkinson Disease: role of NOS inhibitors in L-DOPA induced diskinesias

Processo: 08/55092-9
Linha de fomento:Auxílio à Pesquisa - Regular
Vigência: 01 de janeiro de 2009 - 31 de março de 2013
Área do conhecimento:Ciências Biológicas - Fisiologia - Fisiologia de Órgãos e Sistemas
Convênio/Acordo: INSERM
Pesquisador responsável:Elaine Aparecida Del Bel Belluz Guimarães
Beneficiário:Elaine Aparecida Del Bel Belluz Guimarães
Pesq. responsável no exterior: Rita Raisman-Vozari
Instituição no exterior: Institut National de la Santé et de la Recherche Médicale (Inserm), França
Instituição-sede: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brasil
Assunto(s):Discinesias  Doença de Parkinson  Óxido nítrico  Fármacos neuroprotetores  Gânglios da base 

Resumo

There is evidence that nitric oxide plays a role in the neurotransmitter balance within the basal ganglia and in the pathology of Parkinson's disease (PD). Treatment with the L-NOARG reduced 6-OHDA-induced dopaminergic damage in the dorsal striatum, ventral substantia nigra and lateral globus pallidus. L-NOARG reduced 6-OHDA-induced striatal increase, and substantia nigra compacta decrease, in the density of neuronal nitric oxide synthase (nNOs) positive cells. L-DOPA treatment of PD induces severe motor fluctuations and the development of abnomial involuntary movements, referred to as l-DOPA-induced dyskinesia. It is conceivable that nitrergic mechanisms also contribute to the pathogenesis of l-DOPA response changes. Since it is likely that NOS inhibitors may influence motor behavior, pharmacological blockade of NOS could improve therapeutic efficacy in certain clinical situations. The specific aims of this project are to analyze the role of Nitric Oxide system on neuroprotective/neuroplastic processes in experimental PD and dykinesia induced in rats. In this project we will answer to the following questions: 1- Which are the anatomical relationship of dopaminergic and non-dopaminergic system with nitrergic system in different brain regions regulating motor functions in PD? 2-Which are the consequences of a chronic treatment with a NOS inhibitors on L-DOPA induced diskinesias in an animal model of PD? 3- Which is the role of NOS donators, inhibitors, in the release of DA in mesencephalic cultures? (AU)

Publicações científicas
(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)
TRISTAO, FABRINE S. M.; AMAR, MAJID; LATROUS, INES; DEL-BEL, ELAINE A.; PREDIGER, RUI D.; RAISMAN-VOZARI, RITA. Evaluation of Nigrostriatal Neurodegeneration and Neuroinflammation Following Repeated Intranasal 1-Methyl-4-Phenyl-1,2,3,6-Tetrahydropyridine (MPTP) Administration in Mice, an Experimental Model of Parkinson's Disease. NEUROTOXICITY RESEARCH, v. 25, n. 1, p. 24-32, JAN 2014. Citações Web of Science: 13.
PREDIGER, RUI D. S.; AGUIAR, JR., ADERBAL S.; ROJAS-MAYORQUIN, ARGELIA ESPERANZA; FIGUEIREDO, CLAUDIA P.; MATHEUS, FILIPE C.; GINESTET, LAURE; CHEVARIN, CAROLINE; DEL BEL, ELAINE; MONGEAU, RAYMOND; HAMON, MICHEL; LANFUMEY, LAURENCE; RAISMAN-VOZARI, RITA. Single Intranasal Administration of 1-Methyl-4-Phenyl-1,2,3,6-Tetrahydropyridine in C57BL/6 Mice Models Early Preclinical Phase of Parkinson's Disease. NEUROTOXICITY RESEARCH, v. 17, n. 2, p. 114-129, FEB 2010. Citações Web of Science: 67.

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