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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1998-12-23
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pubmed:abstractText |
We report on a female with mental and motor retardation, facial dysmorphism, abnormal pigmentation reminiscent to hypomelanosis of Ito (HI), and karyotypic mosaicism involving a small supernumerary marker chromosome. The marker chromosome was defined by fluorescence in situ hybridisation (FISH) as a ring X chromosome with breakpoints in the juxtacentromeric region. FISH analysis showed that the ring does not include the XIST locus at the X-inactivation centre and, therefore, may not be subject to X inactivation. X-inactivation studies with the HUMARA (human androgen receptor) and FMR1 assay showed a skewed X-inactivation pattern (85:15) with preferential inactivation of the paternal X chromosome. These results are discussed with respect to the role of functional disomy of Xp in the pathogenesis of HI.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0340-6717
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
103
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
441-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:9856488-Child, Preschool,
pubmed-meshheading:9856488-Dosage Compensation, Genetic,
pubmed-meshheading:9856488-Female,
pubmed-meshheading:9856488-Humans,
pubmed-meshheading:9856488-In Situ Hybridization, Fluorescence,
pubmed-meshheading:9856488-Karyotyping,
pubmed-meshheading:9856488-Mosaicism,
pubmed-meshheading:9856488-Pigmentation Disorders,
pubmed-meshheading:9856488-Ring Chromosomes,
pubmed-meshheading:9856488-X Chromosome
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pubmed:year |
1998
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pubmed:articleTitle |
Pigmentary mosaicism in hypomelanosis of Ito. Further evidence for functional disomy of Xp.
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pubmed:affiliation |
Department of Clinical Genetics, Medical Center of Human Genetics, Philipps University Marburg, Germany. fritzb@mailer.uni-marburg.de
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pubmed:publicationType |
Journal Article,
Review,
Case Reports,
Research Support, Non-U.S. Gov't
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