Linked Life Data

10050662

Source:http://linkedlifedata.com/resource/pubmed/id/10050662

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1999-5-6
pubmed:abstractText
The aetiology of twin-twin transfusion syndrome (TTTS) is unclear. We investigated the hypothesis that monochorionic (MC) pregnancies with TTTS are associated with differences in the timing and symmetry of twinning compared to MC twin pregnancies without TTTS. DNA was extracted from the umbilical cord vessels of 26 female MC twins, 14 with and 12 without TTTS on serial antenatal ultrasound. X-inactivation patterns were determined by DNA digestion with Hhal and Hpall followed by polymerase chain reaction for a polymorphic trinucleotide repeat in the androgen receptor gene. Products were quantified by densitometry and results compared to those in peripheral blood samples of adult female controls. The median degree of non-random inactivation was similar in MC twins with TTTS, in MC twins without TTTS, and in adult controls. The percentage of individuals with skewed (> or =30/70%) inactivation patterns was no different in MC twins with TTTS compared to those without TTTS, and was similar to adult controls using either enzyme technique. In conclusion we found no difference in the degree or frequency of non-random X-inactivation patterns in TTTS. X-inactivation patterns do not appear to be a useful tool for studying the symmetry of inner cell mass splitting in monochorionic twins.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1360-9947
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
52-6
pubmed:dateRevised
2008-8-29
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
X-chromosome inactivation patterns do not implicate asymmetric splitting of the inner cell mass in the aetiology of twin-twin transfusion syndrome.
pubmed:affiliation
Institute of Obstetrics & Gynaecology, Imperial College School of Medicine, Queen Charlotte's & Chelsea Hospital, London, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't