J Korean Med Sci.  1999 Aug;14(4):438-442. 10.3346/jkms.1999.14.4.438.

Role of multicolor fluorescence in situ hybridization (FISH) in simultaneous detection of probe sets for chromosome 18, X and Y in uncultured amniotic fluid cells

• Kim JI
• Rhee JH

• KMID: 1731319
• DOI: http://doi.org/10.3346/jkms.1999.14.4.438

Abstract

Major aneuploidies diagnosed prenatally involve the autosomes 13, 18, and 21, and sex chromosomes. Fluorescence in situ hybridization (FISH) allows rapid analysis of chromosome copy number in interphase cells. The purpose of this study was to evaluate the role of multicolor fluorescence in situ hybridization in simultaneous detection of probe sets for chromosome 18, X, and Y in uncultured amniotic fluid cells as a safer alternative method for aneuploidy detection prenatally. Fifty amniotic fluid samples were analyzed by FISH and standard cytogenetics. Mean time to obtain results was three days for fluorescence in situ hybridization and 20 days for karyotype. Fluorescence in situ hybridization was informative in 43 samples (86%), and within this group, two aneuploidies were correctly identified. This evaluation demonstrates that FISH with X, Y, and 18 alpha satellite DNA probes could accurately and rapidly detect aneuploidies involving these chromosomes and could be used in any prenatal clinical laboratory.

Keyword

Prenatal diagnosis; In situ hybridization, fluorescence; Amniotic fluid

MeSH Terms

Amniocentesis/methods*
Amniotic Fluid/cytology
Aneuploidy
Centromere/genetics
Chromosomes, Human, Pair 18*
Color
DNA Probes
DNA, Satellite/analysis
Female
Human
In Situ Hybridization, Fluorescence/methods*
Karyotyping
Pregnancy
Sex Chromosome Abnormalities/genetics
Sex Chromosome Abnormalities/diagnosis*
X Chromosome*
Y Chromosome*