title: Numerous vessels detected by CD34 in the villous stroma of complete hydatidiform moles.
abstract: It has been considered that the villous stroma of complete hydatidiform moles (CHMs) is usually avascular. Vessels would normally form if embryogenesis had occurred. But judging by the structural maturity of molar villi, it was suspected that they must contain a considerable number of blood vessels and an attempt was made to demonstrate their presence. It has been shown previously that the vascular endothelial cell markers factor VIII related antigen (FVIII-RAg), Ulex europaeus 1 agglutinin (UEA-1) and CD31 were of no use in demonstrating the vessels in molar villi. A monoclonal antibody, QBEND/10, raised against the CD34 antigen in human endothelial cell membranes and hemopoietic progenitor cells, was selected to test its use as a marker of villous vascular endothelial cells in CHMs. On immunohistochemical analysis, numerous blood vessels were found using CD34 antibody in the stroma of CHMs, and the numbers corresponded to those found in normal villi of gestational age 8-12 weeks. Moreover, the luminal free surface of all vascular endothelial cells was so specifically delineated that it permitted the identification of vessels not apparent on hematoxylin- and eosin-stained sections; other stromal cells and trophoblast were not labeled.
authors.affiliation: Department of Laboratory Medicine, Nagoya University School of Medicine, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Qiao
authors.forename: T
authors.initials: T
authors.lastname: Nagasaka
authors.forename: N
authors.initials: N
authors.lastname: Nakashima
mesh_terms: D000328:Adult; D018952:Antigens, CD34 / Q000378:metabolism*; D005169:Factor VIII / Q000378:metabolism; D005260:Female; D005865:Gestational Age; D006801:Humans; D006828:Hydatidiform Mole / Q000098:blood supply* / Q000378:metabolism* / Q000648:ultrastructure; D007150:Immunohistochemistry; D037102:Lectins / Q000378:metabolism; D008854:Microscopy, Electron; D008875:Middle Aged; D037121:Plant Lectins; D019408:Platelet Endothelial Cell Adhesion Molecule-1 / Q000378:metabolism; D011247:Pregnancy; D014594:Uterine Neoplasms / Q000098:blood supply* / Q000378:metabolism* / Q000648:ultrastructure
chemical_list: D018952:Antigens, CD34; D037102:Lectins; D037121:Plant Lectins; D019408:Platelet Endothelial Cell Adhesion Molecule-1; C036850:Ulex europaeus lectins; D005169:Factor VIII