Drug reduces dyskinesia, 'off' times in Parkinson's patients

(Reuters Health) - An experimental extended-release version of the drug amantadine can reduce the duration of the involuntary dancing-like movements seen in people whose long-term use of levodopa has kept their Parkinson ’s disease under control.
Source: Reuters: Health - Category: Consumer Health News Tags: healthNews Source Type: news

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Objective To investigate the frequency of levodopa-induced dyskinesia in dementia with Lewy bodies (DLBs) and Parkinson disease with dementia (PDD) and compare these frequencies with patients with incident Parkinson disease (PD) through a population-based cohort study. Methods We identified all patients with DLB, PDD, and PD without dementia in a 1991–2010 population-based parkinsonism-incident cohort, in Olmsted County, Minnesota. We abstracted information about levodopa-induced dyskinesia. We compared patients with DLB and PDD with dyskinesia with patients with PD from the same cohort. Results Levodopa use and dy...
Source: Neurology Clinical Practice - Category: Neurology Authors: Tags: Parkinson's disease/Parkinsonism, Dementia with Lewy bodies, Frontotemporal dementia, Parkinson's disease with dementia, Cohort studies Research Source Type: research
CONCLUSION: MAO-B inhibitors are well tolerated for the treatment of PD because of their pharmacokinetic properties and neuroprotective action. Rasagiline and selegiline were recommended molecules for early PD and proven safe and provide a modest to significant rise in motor function, delay the use of levodopa and used in early PD. Moreover, safinamide is antiglutamatergic in action. When added to Levodopa, these molecules significantly reduce the off-time with a considerable improvement of non-motor symptoms. This review also discusses the new approaches in therapy like the use of biomarkers, neurorestorative growth facto...
Source: Combinatorial Chemistry and High Throughput Screening - Category: Chemistry Authors: Tags: Comb Chem High Throughput Screen Source Type: research
Contributors : Shetty R DYAVAR ; Stella M PapaSeries Type : Expression profiling by arrayOrganism : Rattus norvegicusWe compared differential gene expression between Striatal tissue derived RNA isolated from Chronic Levodopa (L-DOPA) treated (L-Dopa methyl ester plus benserazide were given at 25 mg/kg and 6.25 mg/kg dose) -Parkinsonian and Dyskinetic Rats (LID Rats) for 8 days as compared to Parkinsonian Disease Control Rats (PD Control Rats). The hypothesis tested in the present study was that whether Inflammation has any role in Chronic Levodopa Induced Dyskinesia in Rats of Parkinson's disease model-as compared to Contr...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by array Rattus norvegicus Source Type: research
CONCLUSION: Continuous circadian i.c.v. of A-dopamine appears to be feasible and shows efficacy without dyskinesia with a safe therapeutic index. PMID: 32205254 [PubMed - as supplied by publisher]
Source: Neurobiology of Disease - Category: Neurology Authors: Tags: Neurobiol Dis Source Type: research
AbstractL-3,4-dihydroxyphenylalanine (L-DOPA) was introduced about half a century ago and is still the most effective medicine for the treatment of Parkinson ’s disease (PD). However, such chronic treatment eventually leads to L-DOPA-induced dyskinesia (LID) on the majority of PD patients. Besides L-DOPA, dopamine agonists are able to induce dyskinesia as well. So far no drug is yet claimed to effectively curb LID, and amantadine has only a modest bene fit on LID patients. Thus, understanding the molecular mechanisms behind LID is urgently needed, and developing new antiparkinsonian medications with low dyskinesia po...
Source: Neurological Sciences - Category: Neurology Source Type: research
Istradefylline: adenosine A2A receptor antagonist to reduce "OFF" time in Parkinson's disease. Drugs Today (Barc). 2020 Feb;56(2):125-134 Authors: Paton DM Abstract Parkinson's disease (PD) is an extremely common degenerative disease with a progressive course. Unfortunately, the longer patients are treated with levodopa, the more likely they are to suffer from increasingly long periods of immobility or "OFF" time. For over 30 years Kyowa Kirin Co., Ltd. (formerly Kyowa Hakko Kirin Co., Ltd.) has been researching the possibility of finding drugs that affect adenosine receptors and th...
Source: Drugs of Today - Category: Drugs & Pharmacology Tags: Drugs Today (Barc) Source Type: research
Dopamine-replacement utilizing L-DOPA is still the mainstay treatment for Parkinson ’s disease (PD), but often leads to development of L-DOPA-induced dyskinesia (LID), which can be as debilitating as the motor ...
Source: BMC Research Notes - Category: Research Authors: Tags: Research note Source Type: research
CONCLUSIONS: These results indicate that MR1916 specifically reduces L-DOPA-induced dyskinesia without affecting the antiparkinsonian effect of L-DOPA in parkinsonian rats. PMID: 32144743 [PubMed - as supplied by publisher]
Source: Pharmacological Reports - Category: Drugs & Pharmacology Authors: Tags: Pharmacol Rep Source Type: research
AbstractBackgroundThe efficacy and safety of opicapone, a once-daily catechol-O-methyltransferase inhibitor, have been established in two large randomized, placebo-controlled, multinational pivotal trials. Still, clinical evidence from routine practice is needed to complement the data from the pivotal trials.MethodsOPTIPARK (NCT02847442) was a prospective, open-label, single-arm trial conducted in Germany and the UK under clinical practice conditions. Patients with Parkinson ’s disease and motor fluctuations were treated with opicapone 50 mg for 3 (Germany) or 6 (UK) months in addition to their current levodop...
Source: Translational Neurodegeneration - Category: Neurology Source Type: research
CONCLUSIONS: Safinamide, at a clinically relevant dose, optimizes the effect of l-DOPA therapy in experimental PD reducing SPNs excitability and modulating synaptic transmission. Co-administration of safinamide and l-DOPA ameliorates motor deficits. PMID: 32142791 [PubMed - as supplied by publisher]
Source: Neuropharmacology - Category: Drugs & Pharmacology Authors: Tags: Neuropharmacology Source Type: research
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