Source:http://linkedlifedata.com/resource/pubmed/id/20847697
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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
10
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pubmed:dateCreated |
2010-10-8
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pubmed:abstractText |
Classic Ehlers-Danlos syndrome is a heritable connective tissue disorder characterized by skin hyperextensibility, fragile and soft skin, delayed wound healing with formation of atrophic scars, easy bruising, and generalized joint hypermobility. It comprises Ehlers-Danlos syndrome type I and Ehlers-Danlos syndrome type II, but it is now apparent that these form a continuum of clinical findings and differ only in phenotypic severity. It is currently estimated that approximately 50% of patients with a clinical diagnosis of classic Ehlers-Danlos syndrome harbor mutations in the COL5A1 and the COL5A2 gene, encoding the ?1 and the ?2-chain of type V collagen, respectively. However, because no prospective molecular studies of COL5A1 and COL5A2 have been performed in a clinically well-defined patient group, this number may underestimate the real proportion of patients with classic Ehlers-Danlos syndrome harboring a mutation in one of these genes. In the majority of patients with molecularly characterized classic Ehlers-Danlos syndrome, the disease is caused by a mutation leading to a nonfunctional COL5A1 allele and resulting in haploinsufficiency of type V collagen. A smaller proportion of patients harbor a structural mutation in COL5A1 or COL5A2, causing the production of a functionally defective type V collagen protein. Most mutations identified so far result in a reduced amount of type V collagen in the connective tissues available for collagen fibrillogenesis. Inter- and intrafamilial phenotypic variability is observed, but no genotype-phenotype correlations have been observed. No treatment for the underlying defect is presently available for Ehlers-Danlos syndrome. However, a series of preventive guidelines are applicable.
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pubmed:commentsCorrections | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
1530-0366
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pubmed:author | |
pubmed:issnType |
Electronic
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pubmed:volume |
12
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
597-605
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pubmed:dateRevised |
2011-3-28
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pubmed:meshHeading |
pubmed-meshheading:20847697-Collagen Type V,
pubmed-meshheading:20847697-Connective Tissue,
pubmed-meshheading:20847697-Contusions,
pubmed-meshheading:20847697-Ehlers-Danlos Syndrome,
pubmed-meshheading:20847697-Genotype,
pubmed-meshheading:20847697-Haploinsufficiency,
pubmed-meshheading:20847697-Humans,
pubmed-meshheading:20847697-Joint Instability,
pubmed-meshheading:20847697-Mutation,
pubmed-meshheading:20847697-Phenotype
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pubmed:year |
2010
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pubmed:articleTitle |
Clinical and genetic aspects of Ehlers-Danlos syndrome, classic type.
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pubmed:affiliation |
Centre for Medical Genetics, Ghent University Hospital, Ghent, Belgium.
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pubmed:publicationType |
Journal Article,
Review,
Research Support, Non-U.S. Gov't
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