New lethal disease involving type I and III collagen defect resembling geroderma osteodysplastica, De Barsy syndrome, and Ehlers-Danlos syndrome IV
We describe the clinical findings and biochemical features of a male child suffering from a so far undescribed lethal connective tissue disorder characterised by extreme hypermobility of the joints, lax skin, cataracts, severe growth retardation, and insufficient production of type I and type III pr...
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Published in | Journal of medical genetics Vol. 35; no. 6; pp. 513 - 518 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
BMJ Publishing Group Ltd
01.06.1998
BMJ BMJ Publishing Group LTD |
Subjects | |
Online Access | Get full text |
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Summary: | We describe the clinical findings and biochemical features of a male child suffering from a so far undescribed lethal connective tissue disorder characterised by extreme hypermobility of the joints, lax skin, cataracts, severe growth retardation, and insufficient production of type I and type III procollagens. His features are compared with Ehlers-Danlos type IV, De Barsy syndrome, and geroderma osteodysplastica, as these disorders show some symptoms and signs shared with our patient. The child died because of failure of the connective tissue structures joining the skull and the spine, leading to progressive spinal stenosis. The aortic valve was translucent and insufficient. The clinical symptoms and signs, together with histological findings, suggested a collagen defect. Studies on both skin fibroblast cultures and the patient's serum showed reduced synthesis of collagen types I and III at the protein and RNA levels. The sizes of the mRNAs and newly synthesised proteins were normal, excluding gross structural abnormalities. These findings are not in accordance with any other collagen defect characterised so far. |
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Bibliography: | local:jmedgenet;35/6/513 ark:/67375/NVC-ZTM6P8TJ-0 istex:C69F748F88B2220F50A3D85B0D839F75025F0CF6 href:jmedgenet-35-513.pdf PMID:9643297 ObjectType-Case Study-2 SourceType-Scholarly Journals-1 ObjectType-Feature-4 content type line 23 ObjectType-Report-1 ObjectType-Article-3 |
ISSN: | 0022-2593 1468-6244 1468-6244 |
DOI: | 10.1136/jmg.35.6.513 |