Abstract
Dopamine agonists have been usually used as adjunctive therapy for the cure of Parkinsons disease. It is generally believed that treatment with these drugs is symptomatic rather than curative and it does not stop or delay the progression of neuronal degeneration. However, several dopamine agonists of the D2-receptor family have recently been shown to possess neuroprotective properties in different in vitro and in vivo experimental Parkinsons disease models. Here we summarize some recent molecular evidences underlining the wide pharmacological spectrum of dopamine agonists currently used for treating Parkinsons disease patients. In particular, the mechanism of action of different dopamine agonists does not always appear to be restricted to the stimulation of selective dopamine receptor subtypes since at least some of these drugs are endowed with antioxidant, antiapoptotic or neurotrophic properties. These neuroprotective activities are molecule-specific and may contribute to the clinical efficacy of these drugs for the treatment of chronic and progressive neurodegenerative diseases in which oxidative injury and/or protein misfolding and aggregation exert a primary role.
Keywords: Free radicals, oxidative stress, Parkinson's disease, Alzheimer's disease, beta amyloid, neurodegeneration, fibrils, neurotrophic factors, neurogenesis
Current Topics in Medicinal Chemistry
Title: Dopamine Receptor Agonists for Protection and Repair in Parkinsons Disease
Volume: 8 Issue: 12
Author(s): Giulia Ferrari-Toninelli, Sara A. Bonini, Giovanna Cenini, Giuseppina Maccarinelli, Mariagrazia Grilli, Daniela Uberti and Maurizio Memo
Affiliation:
Keywords: Free radicals, oxidative stress, Parkinson's disease, Alzheimer's disease, beta amyloid, neurodegeneration, fibrils, neurotrophic factors, neurogenesis
Abstract: Dopamine agonists have been usually used as adjunctive therapy for the cure of Parkinsons disease. It is generally believed that treatment with these drugs is symptomatic rather than curative and it does not stop or delay the progression of neuronal degeneration. However, several dopamine agonists of the D2-receptor family have recently been shown to possess neuroprotective properties in different in vitro and in vivo experimental Parkinsons disease models. Here we summarize some recent molecular evidences underlining the wide pharmacological spectrum of dopamine agonists currently used for treating Parkinsons disease patients. In particular, the mechanism of action of different dopamine agonists does not always appear to be restricted to the stimulation of selective dopamine receptor subtypes since at least some of these drugs are endowed with antioxidant, antiapoptotic or neurotrophic properties. These neuroprotective activities are molecule-specific and may contribute to the clinical efficacy of these drugs for the treatment of chronic and progressive neurodegenerative diseases in which oxidative injury and/or protein misfolding and aggregation exert a primary role.
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Ferrari-Toninelli Giulia, Bonini A. Sara, Cenini Giovanna, Maccarinelli Giuseppina, Grilli Mariagrazia, Uberti Daniela and Memo Maurizio, Dopamine Receptor Agonists for Protection and Repair in Parkinsons Disease, Current Topics in Medicinal Chemistry 2008; 8 (12) . https://dx.doi.org/10.2174/156802608785161402
DOI https://dx.doi.org/10.2174/156802608785161402 |
Print ISSN 1568-0266 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4294 |
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