Detection of fetal chromosomal aneuploidy in pregnant women at advanced maternal age during the first trimester / 南方医科大学学报
Journal of Southern Medical University
; (12): 655-658, 2014.
Article
en Zh
| WPRIM
| ID: wpr-249387
Biblioteca responsable:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the value of maternal plasma cell-free fetal DNA (cff-DNA) examination in detection of fetal chromosomal aneuploidy in pregnant women at advanced maternal ages during the first trimester of pregnancy.</p><p><b>METHODS</b>A total of 136 pregnant women (11 to 13+6 gestational weeks) with advanced maternal ages were screened for fetal chromosomal aneuploidy with ultrasound and maternal plasma cff-DNA examination during March 1, 2011 to August 31, 2013, and the results were then confirmed by karyotype analysis and fluorescence in situ hybridization (FISH).</p><p><b>RESULTS</b>Of the 136 women examined, cff-DNA screening detected chromosomal aneuploidy in 5 cases, including trisome-21 in 3 cases, trisome-18 in 1 case, and 45,X in 1 case as confirmed subsequently by karyotype analysis. Ultrasound screening reported a normal finding in one case of trisomy-21, thickening of the NT in the case of trisomy-18, and fetal anasarca in the case of 45,X. Karyotype analysis and follow-up of the women did not find chromosomal abnormality in the 131 negative cases screened by cff-DNA detection.</p><p><b>CONCLUSION</b>Screening of material plasma cff-DNA allows accurate and early detection of fetal chromosomal aneuploidy in women of advanced maternal ages to avoid unnecessary invasive antenatal examinations.</p>
Texto completo:
1
Base de datos:
WPRIM
Asunto principal:
Primer Trimestre del Embarazo
/
Diagnóstico Prenatal
/
Trisomía
/
Sangre
/
Cromosomas Humanos Par 18
/
ADN
/
Edad Materna
/
Hibridación Fluorescente in Situ
/
Cariotipificación
/
Aneuploidia
Tipo de estudio:
Diagnostic_studies
/
Screening_studies
Límite:
Female
/
Humans
/
Pregnancy
Idioma:
Zh
Revista:
Journal of Southern Medical University
Año:
2014
Tipo del documento:
Article
Pais de publicación:
CHINA
/
CN
/
REPUBLIC OF CHINA