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Irresistible onset of sleep during acute levodopa challenge in a patient with multiple system atrophy (MSA): placebo-controlled, polysomnographic case report.

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A 67-year-old male patient with clinically probable multiple system atrophy developed severe reproducible sleepiness and irresistible onset of sleep during an acute levodopa (L-dopa) challenge. In a placebo-controlled, double-blind study of acute L-dopa challenge, videopolysomnography revealed

Levodopa-induced sleepiness in the Parkinson variant of multiple system atrophy.

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Recent observations suggest that levodopa can induce irresistible sleep onset in multiple system atrophy (MSA). Therefore, we assessed sleepiness during a levodopa challenge in 17 MSA compared with 23 Parkinson's disease (PD) patients using the Stanford Sleepiness Scale (SSS). SSS scores during the

Levodopa-responsive depression associated with corticobasal degeneration: a case report.

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A 60-year-old female was treated for depression with the antidepressant paroxetine for 13 years. The patient had experienced clumsiness and mild rigidity in the left hand, and had agraphia and mild subjective memory complaints for 3 years prior to admission in our hospital. She experienced

A Retrospective Imaging Evaluation of Presynaptic Dopaminergic Degeneration in Multiple System Atrophy with Levodopa Induced Dyskinesia

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Background: Multiple system atrophy (MSA) may develop levodopa-induced dyskinesia, which is dystonic and predominant in the orofacial region. We aimed to characterize the patterns of presynaptic dopaminergic degeneration in patients with

Effectiveness of Levodopa in Patients with Multiple System Atrophy and Associated Clinicopathological Features

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Objective To determine the clinicopathological features of levodopa or dopamine agonist (DA) responders with multiple system atrophy (MSA), an autopsy-confirmed diagnosis is vital due to concomitant cases of MSA and Parkinson's disease (PD). We therefore aimed to investigate the effectiveness of

Neuroendocrine responses to levodopa in multiple system atrophy (MSA).

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Hypothalamic dopaminergic pathways are involved in the regulation of growth hormone and prolactin release from the anterior pituitary. Neuroendocrine studies in patients with multiple system atrophy (MSA), in whom there is a reported loss of hypothalamic dopamine, are few and contradictory. We

Performance of a motor task learned on levodopa deteriorates when subsequently practiced off.

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Studies in animals and in people with Parkinson's disease (PD) demonstrate complex effects of dopamine on learning motor tasks; its effect on retention of motor learning has received little attention. Recent animal studies demonstrate that practicing a task in the off state, when initially learned

Cerebral atrophy and long-term response to levodopa in Parkinson's disease.

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In 92 parkinsonian patients (42 men, 50 women) aged from 37-79 years (mean 62.8) the impact of cerebral atrophy as assessed by computed tomography on the course of the clinical symptomatology under levodopa during a period of 1 to 5 years was investigated. It could be shown that patients suffering

Effective treatment with levodopa and carbidopa for hypomyelination with atrophy of the basal ganglia and cerebellum.

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Hypomyelination with atrophy of the basal ganglia and cerebellum (H-ABC) is a rare leukoencephalopathy presenting in the infantile period and characterized by diffuse cerebral hypomyelination, and atrophy of the basal ganglia and cerebellum. As patients with H-ABC lack remarkable laboratory

Levodopa-responsive parkinsonism in a patient with corticobasal degeneration and bilateral choroid plexus xanthogranulomas.

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Corticobasal degeneration (CBD) has substantial overlap of clinical features with other neurodegenerative diseases including Parkinson's disease (PD). Its clinical diagnostic accuracy is the lowest among the common neurodegenerative diseases, and its antemortem diagnosis is more challenging when CBD

Subthalamic nucleus deep brain stimulation in a patient with levodopa-responsive multiple system atrophy. Case report.

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The authors report the clinicopathological findings in a patient in whom levodopa-responsive parkinsonism developed at 45 years of age. The patient experienced asymmetrical onset of symptoms, sustained benefit from levodopa, and motor fluctuations and dyskinesias, but there were no prominent

Does clinical intolerance to a diagnostic acute levodopa challenge differentiate multiple system atrophy from PD?

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BACKGROUND The diagnosis of multiple system atrophy (MSA) remains challenging. OBJECTIVE To determine if the occurrence of symptoms of clinical intolerance such as nausea, vomiting, hypotension, and profuse perspiration during a standard acute levodopa challenge may be a useful marker of

Levodopa dose-related fluctuations in presumed olivopontocerebellar atrophy.

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The parkinsonism that occurs in some patients with olivopontocerebellar atrophy (OPCA) can cause diagnostic confusion with idiopathic Parkinson's disease (IPD). The response to levodopa is usually a distinguishing feature, the OPCAs either failing to benefit or losing efficacy relatively quickly. A

Pharmacodynamics of a low subacute levodopa dose helps distinguish between multiple system atrophy with predominant Parkinsonism and Parkinson's disease.

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The differential diagnosis between multiple system atrophy with predominant parkinsonism (MSA-P) and Parkinson's disease (PD) may be challenging at disease onset. Levodopa responsiveness helps distinguish the two groups, but studies evaluating this issue using objective standardized tests are

[A patient with multiple system atrophy presenting prolonged levodopa-responsive parkinsonism and off-dystonia of the trunk].

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A 46-year-old man had a 7-year history of dopa-responsive parkinsonism. Four years after starting levodopa, he had typical motor complications such as wearing-off and peak dose as well as off-period dystonia of his trunk. Brain MRI showed marked atrophy of the brainstem and cerebellum, and the cross

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