Dopamine receptor agonists reverse behavioral abnormalities of α-synuclein transgenic mouse, a new model of Parkinson's disease
| العنوان: | Dopamine receptor agonists reverse behavioral abnormalities of α-synuclein transgenic mouse, a new model of Parkinson's disease |
|---|---|
| المؤلفون: | Masaki Wakamatsu, Shingo Iwata, Takeo Funakoshi, Makoto Yoshimoto |
| المصدر: | Journal of Neuroscience Research. 86:640-646 |
| بيانات النشر: | Wiley, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | Male, medicine.medical_specialty, Parkinson's disease, Dopamine Agents, Mice, Transgenic, Substantia nigra, Striatum, Motor Activity, Biology, Antiparkinson Agents, Levodopa, Mice, Cellular and Molecular Neuroscience, Quinpirole, Internal medicine, medicine, Animals, Humans, Pergolide, Behavior, Animal, Receptors, Dopamine D2, Pars compacta, Dopaminergic, Parkinson Disease, medicine.disease, Corpus Striatum, Peptide Fragments, Talipexole, Disease Models, Animal, Endocrinology, nervous system, Dopamine Agonists, Exploratory Behavior, alpha-Synuclein, medicine.drug |
| الوصف: | Parkinson's disease (PD) is characterized by loss of nigral dopaminergic (DAergic) neurons and presence of Lewy bodies, whose major component is alpha-synuclein. We had previously generated transgenic mice termed Syn130m that express truncated human alpha-synuclein (amino acid residues 1-130) in DAergic neurons. Syn130m mice showed significant loss of DAergic neurons in the substantia nigra pars compacta. Subsequently, the striatal DA level and spontaneous locomotor activity of the mice were decreased significantly. In the present study, we investigated behavioral responses of Syn130m mice to L-DOPA and DA receptor agonists. Administration of L-DOPA dose dependently ameliorated the reduction of spontaneous locomotor activity of Syn130m mice. Similarly, D(2) agonists, quinpirole and talipexole, and a D1/D2 agonist, pergolide, were effective against the reduction. Syn130m mice also showed significant reduction in exploratory behavior compared with non-Tg littermates when they were placed in a novel environment, but this abnormality was ameliorated by treatment with pergolide. These results strongly suggest that the behavioral abnormalities of Syn130m mice were caused by low striatal DA content. On the other hand, the expression of postsynaptic D(2)-like receptors (DRD2) in the striatum was not increased in Syn130m mice, although the low striatal DA level is known to induce compensatory expression of DRD2. Because the abnormalities could be rectified by treatment with DA receptor agonists, it is likely that Syn130m mice provide a useful tool to explore therapeutic possibilities for PD as a new animal model of the disease. |
| تدمد: | 1097-4547 0360-4012 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2172d8a63304eb70f896e05264b605f3 https://doi.org/10.1002/jnr.21513 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....2172d8a63304eb70f896e05264b605f3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10974547 03604012 |
|---|