refsum disease/ataxia

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Marked inhibition of Na+, K(+)- ATPase activity and the respiratory chain by phytanic acid in cerebellum from young rats: possible underlying mechanisms of cerebellar ataxia in Refsum disease.

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Refsum disease is an autosomal recessive disorder of peroxisomal metabolism biochemically characterized by highly elevated concentrations of phytanic acid (Phyt) in a variety of tissues including the cerebellum. Reduction of plasma Phyt levels by dietary restriction intake ameliorates ataxia, a

Ataxia with loss of Purkinje cells in a mouse model for Refsum disease.

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Refsum disease is caused by a deficiency of phytanoyl-CoA hydroxylase (PHYH), the first enzyme of the peroxisomal alpha-oxidation system, resulting in the accumulation of the branched-chain fatty acid phytanic acid. The main clinical symptoms are polyneuropathy, cerebellar ataxia, and retinitis

[Chronic ataxia in childhood].

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Chronic ataxias are an heterogeneous group of disorders that affect the child at different ages. Thus, the congenital forms, generally non progressive are observed from first months of life and are expressed by hypotonia and motor delay long before the ataxia became evident. The cerebral magnetic

[Autosomal recessive cerebellar ataxias].

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BACKGROUND Autosomal recessive cerebellar ataxias (ARCA) are heterogeneous and complex inherited neurodegenerative diseases that may affect the cerebellum and/or the spinocerebellar tract, the posterior column of the spinal cord and the peripheral nerves. Cerebellar ataxia is frequently proeminent

[Adult Refsum disease. A retinal dystrophy with therapeutic options].

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Adult Refsum disease is one of the few forms of tapetoretinal degenerations accessible for therapy. The disease is characterized by an elevated plasma phytanic acid level and high concentrations of phytanic acid in a variety tissues. Beside tapetoretinal degeneration, additional symptoms are chronic

Plasma exchange in the treatment of Refsum's disease (heredopathia atactica polyneuritiformis).

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Five cases of heredopathia atactica polyneuritiformis (HAP--Refsum's disease) were treated by serial plasma exchanges. In all patients a reduction in calorie intake and body weight had been associated with a rise in plasma phytanic acid, followed by an exacerbation of the ataxia and neuropathy.

Heredopathia atactica polyneuritiformis phytanic-acid storage disease, Refsum's disease:" a biochemically well-defined disease with a specific dietary treatment.

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Heredopathia atactica polyneuritiformis (phytanic-acid storage disease, Refsum's disease) is an inborn error of metabolism, in which the body accumulates exogenous phytanic acid. The severe manifestations of this disease, which include pigmentary retinal degeneration, chronic polyneuropathy, ataxia,

Keys to overcoming the challenge of diagnosing autosomal recessive spinocerebellar ataxia.

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BACKGROUND Autosomal recessive spinocerebellar ataxia refers to a large group of diseases affecting the cerebellum and/or its connections, although they may also involve other regions of the nervous system. These diseases are accompanied by a wide range of systemic manifestations (cardiopathies,

Phytanic acid storage disease (Refsum's disease): clinical characteristics, pathophysiology and the role of therapeutic apheresis in its management.

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Phytanic acid storage disease (known also as Refsum's Disease) is caused by inherited defects in the metabolic pathway for phytanic acid, a dietary branched-chain fatty acid. Poorly metabolized phytanic acid accumulates in fatty tissues, including myelin sheaths, and in organs including the liver

Identification of a brain specific protein that associates with a refsum disease gene product, phytanoyl-CoA alpha-hydroxylase.

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Refsum disease is an autosomal recessive neurologic disorder of the lipid metabolism. Major diagnostic clinical findings include retinitis pigmentosa, peripheral polyneuropathy, cerebellar ataxia, increased cerebrospinal fluid protein without pleocytosis, nerve deafness, and cardiac involvement. We

Identification of PAHX, a Refsum disease gene.

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Refsum disease is an autosomal recessive disorder characterized by retinitis pigmentosa, peripheral polyneuropathy, cerebellar ataxia and increased cerebrospinal fluid protein. Biochemically, the disorder is defined by two related properties: pronounced accumulation of phytanic acid and selective

Infantile refsum disease with enamel defects: a case report.

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The purpose of this paper was to present the case of a 15-year-old female diagnosed with infantile Refsum disease (IRD) that presented with generalized enamel defects in the primary and permanent dentition. IRD is an inherited autosomal recessive disorder characterized by aberrant peroxisome

Some observations upon biochemical causes of ataxia and a new disease entity ubiquinone, CoQ10 deficiency.

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Some hereditary ataxias are treatable and the insight required for this has come from an in depth knowledge of the phenotypes and clinical biochemistry of the conditions. This has required both fundamental and translational clinical research. Prof John Blass was fortunate to begin his career at what

A child with night blindness: preventing serious symptoms of Refsum disease.

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Refsum disease is a genetic progressive neurological disorder caused by neurotoxic phytanic acid, a nutritional component patients are unable to metabolize. Symptoms include retinopathy, polyneuropathy, ataxia, and deafness. They are variable and rarely recognized before adulthood. The authors

Refsum disease is caused by mutations in the phytanoyl-CoA hydroxylase gene.

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Refsum disease is an autosomal-recessively inherited disorder characterized clinically by a tetrad of abnormalities: retinitis pigmentosa, peripheral neuropathy, cerebellar ataxia and elevated protein levels in the cerebrospinal fluid (CSF) without an increase in the number of cells in the CSF. All

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