Track topics on Twitter Track topics that are important to you
The purpose of this trial is to determine if methylphenidate (MPD), a drug marketed in the U.S. to treat hyperactivity and narcolepsy, added to levodopa, will increase the beneficial effects of levodopa without bothersome side effects in people with Parkinson's disease (PD).
Parkinson's disease (PD) is a common disorder caused by the loss of dopamine-producing brain cells. The disorder is generally treated with levodopa combined with carbidopa. Nerve cells use levodopa to make dopamine. Carbidopa delays the conversion of levodopa into dopamine until it reaches the brain. Motor fluctuations (the wearing off effects of levodopa characterized by sometimes rapid changes between uncontrolled and normal movements) are a common, and often difficult to manage, source of disability in people with PD.
In this trial researchers will study the effects of methylphenidate (MPD), also known as Ritalin—a drug marketed in the U.S. to treat hyperactivity and narcolepsy—on carbidopa/levodopa and other antiparkinson medications taken orally by individuals with Parkinson's disease who experience motor fluctuations when they take levodopa. The overall goal of this project is to develop better symptomatic therapies for PD.
After 2 screening visits to the treatment clinic to evaluate the wearing "on" and "off" effects of levodopa, eligible participants will be scheduled for 3 admissions to the General Clinical Research Center at Oregon Health & Science University during which they randomly will receive the study drug, MPD, or placebo, along with their usual carbidopa/levodopa therapy and/or other antiparkinson medications. Also, participants will have their parkinsonism (tremor, rigidity, postural instability, and bradykinesia) rated and blood pressure and pulse measured at regular intervals.
Duration of the study for participants is about 3 weeks and includes 2 outpatient clinic visits (for screening) and 3 inpatient clinic visits (with overnight stays).
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double-Blind, Primary Purpose: Treatment
Department of Neurology, OP-2, Oregon Health & Science University, 3181 SW Sam Jackson Park Road
Oregon Health and Science University
Published on BioPortfolio: 2014-08-27T03:43:14-0400
This is an open-label cross-over randomized control study comparing the effect of modafinil and methylphenidate in patients with Parkinson's disease with excessive daytime sleepiness.
Gait and balance problems are a significant source of disability in patients with Parkinson disease. Physical therapy remains one of the main treatments. On the other hand some medications...
Prospective observational study of Parkinson's disease with repeat clinical assessment and biobanking of blood samples.
By creating a neurogenebank from Parkinson's disease patients' blood donations we will ultimately be able to define genes for Parkinson's disease and other neurological conditions.
The aim of this research is to discover genes which modify risk for Parkinson's disease. The study includes 800 patients with Parkinson's disease, and their estimated 1,222 available sibli...
Parkinson's disease is a progressive neurodegenerative disorder with multiple motor and non-motor features. It is well known that the ability to drive safely is impaired in Parkinson's disease patient...
While tremor in Parkinson's Disease (PD) can be characterised in the consulting room, its relationship to treatment and fluctuations can be clinically helpful.
There is mounting evidence for a connection between the gut and Parkinson's disease (PD). Dysbiosis of gut microbiota could explain several features of PD.
The rate of Parkinson's disease (PD) progression varies widely between patients. Current knowledge does not allow to accurately predict the evolution of symptoms in a given individual over time.
Physical activity (PA) is increasingly advocated as an adjunct intervention for individuals with Parkinson's disease (PD). However, the specific benefits of PA on the wide variety of impairments obser...
A condition caused by the neurotoxin MPTP which causes selective destruction of nigrostriatal dopaminergic neurons. Clinical features include irreversible parkinsonian signs including rigidity and bradykinesia (PARKINSON DISEASE, SECONDARY). MPTP toxicity is also used as an animal model for the study of PARKINSON DISEASE. (Adams et al., Principles of Neurology, 6th ed, p1072; Neurology 1986 Feb;36(2):250-8)
A group of disorders which feature impaired motor control characterized by bradykinesia, MUSCLE RIGIDITY; TREMOR; and postural instability. Parkinsonian diseases are generally divided into primary parkinsonism (see PARKINSON DISEASE), secondary parkinsonism (see PARKINSON DISEASE, SECONDARY) and inherited forms. These conditions are associated with dysfunction of dopaminergic or closely related motor integration neuronal pathways in the BASAL GANGLIA.
Parkinsonism following encephalitis, historically seen as a sequella of encephalitis lethargica (Von Economo Encephalitis). The early age of onset, the rapid progression of symptoms followed by stabilization, and the presence of a variety of other neurological disorders (e.g., sociopathic behavior; TICS; MUSCLE SPASMS; oculogyric crises; hyperphagia; and bizarre movements) distinguish this condition from primary PARKINSON DISEASE. Pathologic features include neuronal loss and gliosis concentrated in the MESENCEPHALON; SUBTHALAMUS; and HYPOTHALAMUS. (From Adams et al., Principles of Neurology, 6th ed, p754)
Conditions which feature clinical manifestations resembling primary Parkinson disease that are caused by a known or suspected condition. Examples include parkinsonism caused by vascular injury, drugs, trauma, toxin exposure, neoplasms, infections and degenerative or hereditary conditions. Clinical features may include bradykinesia, rigidity, parkinsonian gait, and masked facies. In general, tremor is less prominent in secondary parkinsonism than in the primary form. (From Joynt, Clinical Neurology, 1998, Ch38, pp39-42)
A central nervous system stimulant used most commonly in the treatment of attention-deficit disorders in children and for narcolepsy. Its mechanisms appear to be similar to those of DEXTROAMPHETAMINE.
Pharmacy is the science and technique of preparing as well as dispensing drugs and medicines. It is a health profession that links health sciences with chemical sciences and aims to ensure the safe and effective use of pharmaceutical drugs. The scope of...
Sleep disorders disrupt sleep during the night, or cause sleepiness during the day, caused by physiological or psychological factors. The common ones include snoring and sleep apnea, insomnia, parasomnias, sleep paralysis, restless legs syndrome, circa...
Of all the types of Dementia, Alzheimer's disease is the most common, affecting around 465,000 people in the UK. Neurons in the brain die, becuase 'plaques' and 'tangles' (mis-folded proteins) form in the brain. People with Al...