A chromosome mosaicism with two cell lines was diagnosed in a sterile man. One cell line had a 45,-Y, dup (X) (p22.2) karyotype and accounted for 83% of lymphocytes analyzed. Fluorescence in situ hybridization (FISH) analysis with specific X and Y probes excluded a translocation between the short arms of the X and Y chromosomes and showed that Xp duplication involved a region containing the DXS85 locus, distal to the ZFX and DSS sites. The other cell line consisted of a diploid karyotype with a rearranged Y chromosome, which was shown to be a pseudoisodicentric Yq by FISH. Moreover, FISH with a specific probe for the AZF locus and polymerase chain reaction using Yq SY108 and SY121 primers showed no signals for this region, possibly accounting for the azoospermia in this patient.
|Number of pages||4|
|Publication status||Published - 1995|
- Fluorescence in situ hybridization
- Polymerase chain reaction
- X and Y chromosomes duplication
ASJC Scopus subject areas