Results 21 to 30 of about 39,473 (264)

Low-dose levodopa protects nerve cells from oxidative stress and up-regulates expression of pCREB and CD39. [PDF]

open access: yesPLoS ONE, 2014
OBJECTIVE: This study aimed to investigate the influence of low-dose levodopa (L-DOPA) on neuronal cell death under oxidative stress. METHODS: PC12 cells were treated with L-DOPA at different concentrations. We detected the L-DOPA induced reactive oxygen
Shi-Ying Zhong   +5 more
doaj   +1 more source

The adenosine A2A receptor antagonist/inverse agonist, KW-6356 enhances the anti-parkinsonian activity of L-DOPA with a low risk of dyskinesia in MPTP-treated common marmosets

open access: yesJournal of Pharmacological Sciences, 2023
The adenosine A2A receptor antagonist/inverse agonist, KW-6356 has been shown to be effective in Parkinson's disease (PD) patients as monotherapy and as an adjunct therapy to L-3,4-dihydroxyphenylalanine (L-DOPA)/decarboxylase inhibitor.
Yutaro Ohno   +6 more
doaj   +1 more source

Ropinirole Cotreatment Prevents Perivascular Glial Recruitment in a Rat Model of L-DOPA-Induced Dyskinesia

open access: yesCells, 2023
Dopamine replacement therapy for Parkinson’s disease is achieved using L-DOPA or dopamine D2/3 agonists, such as ropinirole. Here, we compare the effects of L-DOPA and ropinirole, alone or in combination, on patterns of glial and microvascular reactivity
Osama F. Elabi   +4 more
doaj   +1 more source

Simultaneous Determination of Levodopa and Carbidopa from Fava Bean, Green Peas and Green Beans by High Performance Liquid Gas Chromatography [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2013
Introduction: According to many studies, sprouted fava beans are a rich source of levo-dihydroxy phenylalanine (L-dopa) the precursor of dopamine, and they are now being investigated for use in the management of Parkinson’s disease.
Mohseni Mehran S.M., Golshani B.
doaj   +1 more source

Differential Amperometric Microneedle Biosensor for Wearable Levodopa Monitoring of Parkinson’s Disease

open access: yesBiosensors, 2022
Levodopa (L-Dopa) is considered to be one of the most effective therapies available for Parkinson’s disease (PD) treatment. The therapeutic window of L-Dopa is narrow due to its short half-life, and long-time L-Dopa treatment will cause some side effects
Lu Fang   +9 more
doaj   +1 more source

Effects of Aging on Levo-Dihydroxyphenylalanine- Induced Dyskinesia in a Rat Model of Parkinson’s Disease

open access: yesFrontiers in Aging Neuroscience, 2021
BackgroundIt remains unclear why patients with young-onset Parkinson’s disease more often develop levo-dihydroxyphenylalanine (L-dopa)-induced dyskinesia (LID) and have a more severe form than patients with old-onset Parkinson’s disease. Previous studies
Haruo Nishijima   +8 more
doaj   +1 more source

Striatal astrocytes act as a reservoir for L-DOPA.

open access: yesPLoS ONE, 2014
L-DOPA is therapeutically efficacious in patients with Parkinson's disease (PD), although dopamine (DA) neurons are severely degenerated. Since cortical astrocytes express neutral amino acid transporter (LAT) and DA transporter (DAT), the uptake and ...
Masato Asanuma   +4 more
doaj   +1 more source

Combination Treatment of Icariin and L-DOPA Against 6-OHDA-Lesioned Dopamine Neurotoxicity

open access: yesFrontiers in Molecular Neuroscience, 2018
Until now, the dopamine (DA) precursor, L-3,4-dihydroxyphenylalanine (L-DOPA), remains the gold standard effective drug therapy for Parkinson’s disease (PD) patients.
Di-Sheng Lu   +7 more
doaj   +1 more source

Chronic L-DOPA therapy alters central serotonergic function and L-DOPA-induced dopamine release in a region-dependent manner in a rat model of Parkinson's disease

open access: yesNeurobiology of Disease, 2011
The therapeutic benefit of L-DOPA is commonly attributed to restoration of dopamine (DA) extracellular levels in the striatum of Parkinsonian patients. However, the loss of efficacy of L-DOPA after chronic use is paradoxically associated with a similar ...
Sylvia Navailles   +3 more
doaj   +1 more source

Spontaneous locomotor activity and L-DOPA-induced dyskinesia are not linked in 6-OHDA parkinsonian rats

open access: yesFrontiers in Behavioral Neuroscience, 2014
Bradykinesia (slowness of movement) and other characteristic motor manifestations of Parkinson’s disease (PD) are alleviated by treatment with L-dihydroxyphenylalanine (L-DOPA).
Stefania eSgroi   +3 more
doaj   +1 more source

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