Ultrastructural, neurological, and glycosaminoglycan abnormalities in lowe's syndrome.

Abstract:

:The oculocerebrorenal syndrome (OCRS), Lowe's syndrome, is an X-linked, recessive disease characterized by mental retardation, congenital corneal abnormalities and cataracts, growth failure, rickets, osseous abnormalities, renal dysfunction with periodic acidosis, hypotonia, and areflexia. Ultrastructural studies of skin biopsy specimens in three individuals with the disorder (aged 17, 9, and 8 years) revealed cytoplasmic, membrane-bound, electron-lucent vacuoles and some electron-dense membranous inclusion bodies in fibroblasts and Schwann cells, as well as axonal degeneration and vascular changes. Computed tomographic scans evidenced brain atrophy. Urinary excretion of glycosaminoglycans (GAG) was four to five times greater than in normal controls. The predominant urinary GAG was a low-sulfated chondroitin-4-sulfate; chondroitin-6-sulfate and heparan sulfate excretion levels were normal. A tenfold increase in urinary GAG excretion was found in one patient with oculocerebrorenal syndrome during periods of behavioral agitation. These findings suggest that the clinical stigmata of oculocerebrorenal syndrome may be related to a defect in GAG metabolism.

journal_name

Ann Neurol

journal_title

Annals of neurology

authors

Wisniewski KE,Kieras FJ,French JH,Houck GE Jr,Ramos PL

doi

10.1002/ana.410160109

subject

Has Abstract

pub_date

1984-07-01 00:00:00

pages

40-9

issue

1

eissn

0364-5134

issn

1531-8249

journal_volume

16

pub_type

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