homovanillic acid/atrofie

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Cerebrospinal fluid homovanillic acid levels are not reduced in early corticobasal degeneration.

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To investigate the contribution of nigral degeneration to the development of parkinsonism in the early stages of corticobasal degeneration (CBD), we measured the cerebrospinal fluid (CSF) levels of homovanillic acid (HVA) in patients with early CBD (n = 5), and compared the levels with those in

Low lumbar CSF levels of homovanillic acid and 5-hydroxyindoleacetic acid in multiple system atrophy with autonomic failure.

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Low lumbar CSF concentrations of homovanillic acid (HVA) and 5-hydroxyindoleacetic acid (5-HIAA) in patients with multiple system atrophy attended by autonomic failure (MSA) reflect decreased activity in central dopaminergic and serotonergic pathways. These neurochemical changes are consistent with

Dopamine-beta-hydroxylase activity and homovanillic acid in spinal fluid of schizophrenics with brain atrophy.

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Schizophrenic patients with high ventricle brain ratios and cortical brain atrophy, as shown by computerized tomography, had decreased spinal fluid concentrations of homovanillic acid and dopamine-beta-hydroxylase activity. These decreased cerebral spinal fluid concentrations in patients with brain

[Cerebrospinal fluid homovanillic acid in paralysis agitans and spinocerebellar degeneration (author's transl)].

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Cerebrospinal fluid biogenic amines depletion and brain atrophy in adult patients with phenylketonuria.

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Biogenic amines synthesis in phenylketonuria (PKU) patients with high phenylalanine (Phe) concentration is thought to be impaired due to inhibition of tyrosine and tryptophan hydroxylases and competition with amino acids at the blood-brain barrier. Dopamine and serotonin deficits might explain brain

CSF analysis differentiates multiple-system atrophy from idiopathic late-onset cerebellar ataxia.

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BACKGROUND Differentiating idiopathic late-onset cerebellar ataxia (ILOCA) from ataxia due to the cerebellar subtype of multiple-system atrophy (MSA-C) can be difficult in the early stages of the disease METHODS The authors analyzed the levels of various CSF biomarkers in 27 patients with MSA-C and

Decreased CSF levels of homovanillic acid in ALS patients.

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Levels of homovanillic acid (MVA) were measured in lumbar cerebrospinal fluid from 24 patients affected by amyotrophic lateral sclerosis (ALS) and compared with those found in 11 patients with Parkinson's disease (PD) and 10 patients with lumbar disc herniations who served as controls. Mean HVA

Structural brain pathology in schizophrenia revisited. Prefrontal cortex pathology is inversely correlated with cerebrospinal fluid levels of homovanillic acid.

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Computed tomography scan analysis of 35 schizophrenic patients, 26 medical patients, and 31 normal controls revealed significantly larger ventricular brain ratios and structural changes consistent with cortical atrophy in both schizophrenic and medical patients in comparison with normal controls.

Atrophy limited to the third ventricle in chronic schizophrenic patients. Report of a controlled series.

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Computed tomographic scans of 30 chronic schizophrenic patients and 26 matched medical controls were blindly assessed for ventricular brain ratio, cortical atrophy, third-ventricle diameter, and cerebellar atrophy. Schizophrenic patients had significantly larger third ventricles than the medical

Decreased CSF concentrations of homovanillic acid and gamma-aminobutyric acid in Alzheimer's disease. Age- or disease-related modifications?

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Fifteen patients, 48 to 72 years old, with Alzheimer's disease were studied. Clinical status was assessed by neurologic and neuropsychologic examinations and psychometric testing. Patients were divided into two groups on the basis of clinical assessment: group 1, little mental deterioration, and

Cerebrospinal fluid homovanillic acid and parkinsonism in Huntington's disease.

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In Huntington's disease (HD), normal or decreased levels of homovanillic acid (HVA) in cerebrospinal fluid (CSF) have been reported but have not been analyzed with respect to severity of parkinsonism, which in certain cases may be a predominant feature of the illness. We obtained CSF by lumbar

Cerebrospinal fluid 3,4-dihydroxyphenylacetic acid level after tolcapone administration as an indicator of nigrostriatal degeneration.

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The development of reliable biological markers of nigrostriatal degeneration has important implications from both experimental and clinical viewpoints, since such biomarkers could be used for diagnostic and monitoring purposes in models of parkinsonism as well as in Parkinson's disease patients. In

Unresponsiveness to L-DOPA in parkinsonian patients: a study of homovanillic acid concentration in the cerebrospinal fluid.

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In this study, concentrations of homovanillic acid (HVA), a principal metabolite of dopamine (DA), in the cerebrospinal fluid (CSF) were measured in 17 patients with Parkinson's disease (PD) who had been effectively treated with L-DOPA and in 8 patients clinically diagnosed as having striatonigral

Evidence for a protective action of the vigilance promoting drug modafinil on the MPTP-induced degeneration of the nigrostriatal dopamine neurons in the black mouse: an immunocytochemical and biochemical analysis.

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Based on the observations that the psychostimulant drug amphetamine in combination with physiotherapy can promote recovery of brain function after brain injury, we have studied the ability of the vigilance promoting drug Modafinil to counteract

A new family with Joseph disease in Japan. Homovanillic acid, magnetic resonance, and sleep apnea studies.

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Four male patients and one female patient of a new family with Joseph disease are reported. Their disease was characterized by autosomal dominant inheritance, bulging eyes, rigidity and spasticity of the lower extremities, dystonia, and bradykinesia. Cerebrospinal fluid homovanillic acid level was

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