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Comparison of Modafinil and Methylphenidate in Treatment of Excessive Daytime Sleepiness in Patients With Parkinson's Disease

2014-08-27 03:41:47 | BioPortfolio

Summary

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.

Description

Sleep disorders are common in Parkinson's disease (PD) and a significant cause of impairment of function in already disabled individuals. Almost all patients with PD report disturbed sleep, including excessive daytime sleepiness (EDS), disorders of initiating and maintaining sleep (DIMS) or parasomnias.1 The underlying pathology associated with PD and medication effects have both been implicated in the sleep disorders affecting these patients. EDS has become the focus of attention because of its effect on quality of life and impairment in driving and predisposition to traffic accidents. Its prevalence has been estimated between 15-50%. Treatment of EDS has become an important factor in the management of the PD patient, and the recent introduction of modafinil, a wakefulness promoting agent approved for narcolepsy, has led to increasing off-label use of this agent. Prior to modafinil, amphetamine and methylphenidate, two classical psychostimulants, were the agents of choice in treating EDS. However, these agents also have a direct effect on the dopaminergic system. They increase both sleep and REM latency, while reducing total sleep time and REM sleep. By comparison, the mechanism of action of modafinil is unknown, yet distinct from that of the psychostimulants. A direct comparison of the effect on EDS of modafinil with classical psychostimulants is lacking. The overall goals of this research proposal are to determine which agent is most effective in treating EDS in PD patients by using an open-label randomized control study comparing efficacy, onset of action and tolerability.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Parkinson's Disease

Intervention

modafinil, methylphenidate

Location

Philadelphia, OPC
Philadelphia
Pennsylvania
United States
19106

Status

Terminated

Source

Department of Veterans Affairs

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:41:47-0400

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Medical and Biotech [MESH] Definitions

Proteins associated with sporadic or familial cases of PARKINSON DISEASE.

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)

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