Experimental modeling of preclinical and clinical stages of Parkinson’s disease
| Autor: | A. K. Nanaev, G. N. Kryzhanovsky, P. D. Klodt, V. B. Narkevich, E. V. Bocharov, E. A. Kozina, V. G. Kucheryanu, V. G. Khaindrava, Michael V. Ugrumov, V. S. Kudrin, K. S. Raevskii |
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| Rok vydání: | 2011 |
| Předmět: |
Serotonin
Parkinson's disease Substantia nigra General Biochemistry Genetics and Molecular Biology Pathogenesis Mice chemistry.chemical_compound Dopamine medicine Animals Neurotoxin Tyrosine hydroxylase business.industry Dopaminergic Neurons MPTP Dopaminergic Brain Parkinson Disease General Medicine medicine.disease nervous system diseases Mice Inbred C57BL Substantia Nigra Disease Models Animal nervous system chemistry 1-Methyl-4-phenyl-1 2 3 6-tetrahydropyridine Nerve Degeneration business Neuroscience medicine.drug |
| Zdroj: | Bulletin of Experimental Biology and Medicine. 150:566-569 |
| ISSN: | 1573-8221 0007-4888 |
| Popis: | Degeneration of dopaminergic (DAergic) neurons of the nigrostriatal system is the key stage in the pathogenesis of Parkinson’s disease. The fi rst symptoms of this disease are observed after degeneration of 70-80% neurons, which occurs over 20–30 years. The clinical stage of Parkinson’s disease begins after this period. Late diagnostics of Parkinson’s disease contributes to low effi ciency of therapi for this disorder. Detailed study of the pathogenesis and development of preclinical diagnostic methods for Parkinson’s disease are the urgent problems. This work was designed to develop a new experimental model of the preclinical and clinical stages of the disease. Experimental modeling was performed on C57Bl/6 mice using 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). This agent is converted into the MPP+−neurotoxin in brain DAergic neurons. We showed that MPTP in a dose of 4 mg/kg has no effect on the nigrostriatal DAergic system. MPTP in a dose of 8–16 mg/kg produced the toxic effect only on DAergic axons, which simulates the preclinical stage of Parkinson’s disease. MPTP in a dose of 20–40 mg/kg had the toxic effect on neuronal axons and bodies, which simulates the clinical stage of Parkinson’s disease. The data suggest that progressive degeneration of DAergic neurons is accompanied by activation of compensatory mechanisms for functional defi ciency of these cells. |
| Databáze: | OpenAIRE |
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