Refsum disease


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Ref·sum dis·ease

(ref'sūm), [MIM*266500]
a rare degenerative disorder due to a deficiency of phytanic acid α-hydroxylase; clinically characterized by retinitis pigmentosa, ichthyosis, demyelinating polyneuropathy, deafness, and cerebellar signs; autosomal recessive inheritance caused by mutation in the gene encoding phytanoyl-CoA hydroxylase (PAHX or PHYH) on chromosome 10p. Infantile Refsum disease [MIM*266510] is an impaired peroxisomal function with accumulation of phytanic acid, pipecolic acid; autosomal recessive inheritance, caused by mutation in the PEX 1 gene on 7q.

Refsum disease

(rĕf′səm)
n.
A rare autosomal recessive disorder in which an enzyme deficiency causes accumulation of phytanic acid in tissues, leading to retinitis pigmentosa, anosmia, and often ataxia, polyneuropathy, and other conditions.

Ref·sum dis·ease

(ref'sŭm di-zēz')
A rare degenerative disorder due to a deficiency of phytanic acid α-hydroxylase; clinically characterized by retinitis pigmentosa, ichthyosis, demyelinating polyneuropathy, deafness, and cerebellar signs; autosomal recessive inheritance caused by mutation in the gene encoding phytanoyl-CoA hydroxylase (PAHX or PAYH) on chromosome 10p. Infantile Refsum disease is an impaired peroxisomal function with accumulation of phytanic acid and pipecolic acid; autosomal recessive inheritance caused by mutation in the PEX 1 gene on 7q.

Refsum,

Sigvald, Bernhard Norwegian neurologist, 1907-1991.
Refsum disease - a rare hereditary degenerative disorder characterized by retinitis pigmentosa, demyelinating polyneuropathy, deafness, nystagmus, and cerebellar signs. Synonym(s): heredopathia atactica polyneuritiformis; Refsum syndrome
Refsum syndrome - Synonym(s): Refsum disease
References in periodicals archive ?
We show the clinical usefulness of the technique by successfully applying it to 4 inherited disorders in lipid metabolism: SLOS, cerebrotendinous xanthomatosis (CTX), sitosterolemia, and Refsum disease.
The patient population consisted of the following: SLOS (OMIM 270400), 3 cases; CTX (OMIM 213700), 3 cases; sitosterolemia (OMIM 210250),1 case; and Refsum disease (OMIM 266500), 1 case.
Interest in phytol has focused mainly on its metabolism to phytanic acid, a fatty acid that plays an important role in Refsum disease and several other peroxisomal diseases (8,9).
The peroxisome biogenesis disorders (PBDs) represent a continuum of clinical features ranging from the most severe form, Zellweger syndrome, through neonatal adrenoleukodystrophy to the least severe form, infantile Refsum disease.
Plasma and urine L-pipecolic acid (L-2-piperidinecarboxylic acid; L-PA) [3] is increased in disorders of peroxisomal assembly deficiencies, such as cerebrohepatorenal syndrome (CHRS; Zellweger syndrome), neonatal adrenoleukodystrophy, and infantile Refsum disease (1, 2).