Application of touch FISH in the study of mosaic tetraploidy and maternal cell contamination in pregnancy losses

• Type: Article in International Scientific Journal
• Date: 2010

Authors

doria, s (Author) FMUP; lima, v (Author) Other; carvalho, b (Author) Other; moreira, ml (Author) Other; sousa, m (Author) ICBAS; barros, a (Author) FMUP; carvalho, f (Author) FMUP

Journal

Title: Journal of Assisted Reproduction and Genetics

Vol. 27

Pages: 657-662

ISSN: 1058-0468

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 10 Citations

Scopus - 12 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-003-1F0

DOI: 10.1007/s10815-010-9460-1

Abstract (EN): Karyotype is a well established technique in the study of spontaneous miscarriages but is associated with selective overgrowth of maternal cells and other culture artefact (spp) such as tetraploidy, which could mask the true karyotype of the conceptus. 328 cases of pregnancy losses were studied by karyotype and Multiplex Ligation Dependent Probe Amplification technique. Touch FISH performed in non-cultured cells was used to evaluate the ploidy complement and sex discrepancies using centromeric probes for chromosomes X, Y and 18. Touch FISH confirmed 13 cases of maternal contamination, identified a triploidy and a monosomy X. True tetraploidy was confirmed in 7/14 cases studied. Touch FISH protocol is extremely accurate in the distinction of genuine mosaicism from tissue culture artifacts namely in cases with suspicion of tetraploidy and can be used to confirm maternal cell contamination in cases with sex discrepancy between karyotype and MLPA.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6