C A Bay

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The clinical phenotype in Lesch-Nyhan disease has been analyzed in 19 patients studied in hospital. In each case the diagnosis was made on the basis of inactivity of the enzyme hypoxanthine guanine phosphoribosyltransferase in erythrocyte lysates. All had hyperuricemia, and the presence of 'orange sand' in the diaper was a prominent early complaint. All had(More)
BACKGROUND Patients with propionic acidemia usually present in the neonatal period with life-threatening ketoacidosis, often complicated by hyperammonemia. It was thought that the neurologic abnormalities seen in this disease were exclusively the consequences of these acute crises. Experience with 2 patients with propionic acidemia indicates that this(More)
An autosomal dominant striatonigral degeneration is present in a family of Portuguese ancestry numbering in excess of 329 persons in eight generations. The illness begins in the second, third, or fourth decade, and progresses for about 15 years with parkinsonian rigidity, spasticity, spastic dysarthria, and abnormalities of eye movement. Neuropathologic(More)
Localized water-suppressed 1H magnetic resonance spectroscopy was performed in an 11-month-old infant with Leigh syndrome. Spectra obtained from the basal ganglia, occipital cortex, and brainstem showed elevations in lactate, which were most pronounced in regions where abnormalities were seen with routine T2-weighted magnetic resonance imaging. This(More)
The separation of brain and fibroblast proteins was analyzed on two-dimensional acrylamide gels. Proteins were examined from skin fibroblast cultures and brain homogenates from the frontal cerebral cortex, putamen, and cerebellum. Protein species from skin fibroblast cultures of controls and patients with Joseph disease or Huntington disease were not(More)
Smith-Lemli-Opitz syndrome (SLOS) is an autosomal recessive disorder characterized by a defect in cholesterol biosynthesis, associated with mental retardation and multisystem structural abnormalities. This study investigated the prevalence of congenital CNS abnormalities by MRI in a large series of patients with SLOS and the correlation of the clinical and(More)
Proteins were separated on two-dimensional acrylamide gels obtained from brain samples of patients with Joseph disease, Huntington disease (HD) and multiple sclerosis. Similar protein separations were made from cultured skin fibroblasts of Joseph disease patients. Two major classes of proteins, one with a MW of 50,000 probably representing the glial(More)
Our objective has been to trace Joseph's disease to its geographic origins and to determine the spectrum of clinical manifestations. This goal we have achieved by documenting type I and II disease within the Joseph and Sousa families. The major neuropathologic findings are a progressive neuronal loss involving the striatum, nigra, dentate nucleus of the(More)
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