Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2001-2-2
pubmed:abstractText
beta2-glycoprotein I (beta2GPI) and annexin V (AV) have been implicated in the pathophysiology of the antiphospholipid syndrome (APS). We investigated their placental expression in normal villous tissues throughout gestation; first trimester n = 10, early second trimester; n = 4, preterm; n = 5) and term; n = 7 and in APS (2 first trimester, 1 preterm and 8 term deliveries). beta2GPI and AV were both expressed by the placenta from as early as seven weeks gestation and were colocalised to the syncytiotrophoblast. beta2GPI staining was also observed in stromal cells, being present in phagocytic Hofbauer cells and surrounding newly formed fetal vessels in a perivascular pattern, from seven to seventeen weeks gestation. An abnormal morphological distribution of AV was noted in one first trimester APS placenta, and for beta2GPI in a further first trimester placenta. When placental proteins were extracted from villous tissue, the concentration of AV/mg protein in term APS placentas (median, interquartile range) (aPS; 8.16, 7.879.72 microg/mg) was significantly higher (p <0.005) than normal term levels (normal; 2.47, 2.28-2.54 microg/mg). beta2GPI increased with advancing gestation (first trimester; 0.93, 0.64-1.26 microg/mg, term; 3.67, 2.58-4.48 microg/mg) in normal pregnancy. Term APS placentas had a reduced beta2GPI content (2.31, 1.87-2.49 microg/mg), p <0.05. The placental role of these proteins remains to be identified.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0340-6245
pubmed:author
pubmed:issnType
Print
pubmed:volume
84
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
32-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10928466-Abortion, Habitual, pubmed-meshheading:10928466-Annexin A5, pubmed-meshheading:10928466-Antiphospholipid Syndrome, pubmed-meshheading:10928466-Autoantibodies, pubmed-meshheading:10928466-Autoimmune Diseases, pubmed-meshheading:10928466-Chorionic Villi, pubmed-meshheading:10928466-Female, pubmed-meshheading:10928466-Fetal Growth Retardation, pubmed-meshheading:10928466-Fetal Proteins, pubmed-meshheading:10928466-Gene Expression Regulation, Developmental, pubmed-meshheading:10928466-Gestational Age, pubmed-meshheading:10928466-Giant Cells, pubmed-meshheading:10928466-Glycoproteins, pubmed-meshheading:10928466-Humans, pubmed-meshheading:10928466-Lupus Erythematosus, Systemic, pubmed-meshheading:10928466-Obstetric Labor, Premature, pubmed-meshheading:10928466-Pregnancy, pubmed-meshheading:10928466-Pregnancy Complications, pubmed-meshheading:10928466-Pregnancy Trimesters, pubmed-meshheading:10928466-Trophoblasts, pubmed-meshheading:10928466-beta 2-Glycoprotein I
pubmed:year
2000
pubmed:articleTitle
Ontogeny of beta 2 glycoprotein I and annexin V in villous placenta of normal and antiphospholipid syndrome pregnancies.
pubmed:affiliation
Department of Haematology, University College London, UK. s.donohoe@ucl.ac.uk
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't