Linked Life Data

19681155

Source:http://linkedlifedata.com/resource/pubmed/id/19681155

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
2009-8-26
pubmed:abstractText
Trichothiodystrophy (TTD) is a congenital hair dysplasia with autosomal recessive transmission. Cross banding pattern under polarized light plus trichoschisis and a low sulfur content of hair shafts define the disorder, which is associated with variable and neuroectodermal symptoms. So-called photosensitive forms of TTD (with low level of in vitro UV-induced DNA repair, not constantly associated with marked clinical photosensitivity) are caused by mutations in genes encoding subunits of the transcription/repair factor IIH (TFIIH). Ten percentage of nonphotosensitive patients are known to have TTDN1 mutations, the specific role of which is unknown. We studied nine patients recruited at our institution and reviewed 79 with molecular analysis out of 122 TTD patients reported in literature with the aim to collect systematically the clinical findings in TTD patients and establish genotype-phenotype correlations. The frequency of congenital ichthyosis, collodion-baby type, was significantly higher in the TFIIH mutated group. Hypogonadism was significantly more frequent in the non-photosensitive group. There was no statistical difference regarding osseous anomalies. Mutations in TFIIH sub-units leading to abnormal expression in genes involved in epidermal differentiation could explain the particular dermatological changes seen in photosensitive cases of TTD. We suggest a new clinico-genetic classification of TTD, which may help clinicians confused by the current acronyms used (IBIDS, PIBIDS...). Understanding the TTD ichthyotic phenotype could lead to therapeutic advances in the management of TTD and other types of ichthyoses.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1552-4833
pubmed:author
pubmed:copyrightInfo
(c) 2009 Wiley-Liss, Inc.
pubmed:issnType
Electronic
pubmed:volume
149A
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2020-30
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
New clinico-genetic classification of trichothiodystrophy.
pubmed:affiliation
Department of Pediatric Dermatology, National Reference Center for Rare Skin Disorders, Pellegrin University Hospitals, Bordeaux, France. fanny.morice-picard@chu-bordeaux.fr
pubmed:publicationType
Journal Article, Review, Research Support, Non-U.S. Gov't