Your browser doesn't support javascript.
loading
Detection of fetal erythroid cells from maternal blood using fluorescence in situ hybridization and liquid culture
Journal of Korean Medical Science ; : 145-149, 2001.
Article Dans Anglais | WPRIM | ID: wpr-179360
ABSTRACT
Fetal nucleated erythrocytes circulating in maternal blood are a potential source of fetal DNA for noninvasive prenatal genetic diagnosis. However, the estimated ratio of fetal to maternal cells is extremely small. In order to enrich these cells, we performed direct culture using a two-phase liquid system. Mononuclear cells were obtained from maternal blood samples at 8-10(+3) weeks of gestation and cultured in the first phase. After 4-5 days, the nonadherent cells were harvested and recultured with erythropoietin in the second phase for another 3-5 days. We examined cellular morphology, and counted the number of benzidine- positive cells and the percentage of glycophorin A/CD71 positive erythroid cells. We also did Kleihauer-Betke stain for Hb F, polymerase chain reaction (PCR) for SRY/DYZ1, chromosome analysis, and fluorescence in situ hybridization (FISH). The number of total erythroid cells reached about 0.1x10(6)-1.0x10(6)/mL with a purity of 84.0-97.3%. Hb F stain showed total erythroid cells of approximately 0.4x10(4)-9.8x10(4)/mL. Male DNA was detected in one case by PCR. In this case, the XY karyotype was confirmed by FISH and amniocentesis. This approach provides enriched source of fetal cells for further prenatal genetic analysis without complicated separation or sorting procedures.
Sujets)

Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Séparation cellulaire / Érythroblastes / Dépistage génétique / Aberrations des chromosomes / Hybridation fluorescente in situ / Techniques de culture cellulaire / Caryotypage / Échange foetomaternel Type d'étude: Etude diagnostique / Étude pronostique Limites du sujet: Femelle / Humains / Grossesse langue: Anglais Texte intégral: Journal of Korean Medical Science Année: 2001 Type: Article

Documents relatifs à ce sujet

MEDLINE

...
LILACS

LIS

Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Séparation cellulaire / Érythroblastes / Dépistage génétique / Aberrations des chromosomes / Hybridation fluorescente in situ / Techniques de culture cellulaire / Caryotypage / Échange foetomaternel Type d'étude: Etude diagnostique / Étude pronostique Limites du sujet: Femelle / Humains / Grossesse langue: Anglais Texte intégral: Journal of Korean Medical Science Année: 2001 Type: Article