Rapid detection of aneuploidy in uncultured fetal cord blood cells by FISH ( Fluorescence In Situ Hybridization ).

Choi, Young Min; Chang, Eun Ju; Jun, Jong Kwan; Hwang, Do Yeong; Cheong, Kyung Soon; Kim, Ki Chul; Min, Eung Gi; Choe, Jin; Moon, Shin Yong

Original Article

Korean Journal of Obstetrics & Gynecology 2000;43(3):386-390.
Published online January 1, 2001.

Rapid detection of aneuploidy in uncultured fetal cord blood cells by FISH ( Fluorescence In Situ Hybridization ).

Young Min Choi, Eun Ju Chang, Jong Kwan Jun, Do Yeong Hwang, Kyung Soon Cheong, Ki Chul Kim, Eung Gi Min, Jin Choe, Shin Yong Moon

Abstract

OBJECTIVE
To determine the fetal aneuploidy in fetal blood cells from cordocentesis. METHODS: We analyzed their karyotype and performed fluorescence in situ hybridization(FISH) for chromosome 18, 21, X, and Y in 14 cases of fetal blood cells from cordocentesis at Department of Obstetrics & Gynecology, College of Medicine, Seoul National University and Hamchoon Women's Clinic. RESULTS: In all cases we obtained the consistent results in both methods and were able to rapidly detect aneuploidy in uncultured fetal blood cells using FISH before karyotyping with culture for 48 hr. The averages for accuracy of FISH were from 84.6 % to 93.9%. CONCLUSION: In this study we suggest that the rapid detection in uncultured fetal blood using FISH is possible and that this diagnostic method will be clinically useful when rapid result would be demanded.

Key Words: FISH, Uncultured fetal blood cells, Cordocentesis