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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Codina-Pascual, M. et al.

Codina-Pascual, Oliver-Bonet, Navarro, Starke, Liehr, Gutiérrez-Mateo, Sánchez-García, Arango, Egozcue, Benet,

FISH characterization of a dicentric Yq (p11.32) isochromosome in an azoospermic male.

The most common structural rearrangements of the Y chromosome result in the production of dicentrics. In this work, we analyze an abnormal Y chromosome, detected as a mosaic in an azoospermic male ascertained for infertility. FISH with seven different DNA probes specific for Y chromosome sequences (Y alpha-satellite, Y alpha-satellite III, non-alpha-satellite centromeric Y, SRY gene, subtelomeric Yp, subtelomeric Yq, and PNA-tel) and CGH analysis were performed. FISH results showed that the abnormal Y chromosome was a dicentric Yq isochromosome and that the breakpoint was distally in band Yp11.32. Lymphocyte chromosomes showed a mosaicism with 46,X,idicY(qter-->p11.32::p11.32-->qter) (51.7%), 46,XY (45.6%), and other cell lines (2.7%). In oral interphase cells, the mosaicism was 46,XidicY (62.8%), 46,XY (25.7%), 45,X (6.6%), and others (4.9%). The possible origin of this dicentric Yq isochromosome is discussed. Finally, we compare differences in mosaicism and phenotype among three reported cases with the breakpoint at Yp11.32 Copyright 2004 Wiley-Liss, Inc.[1]

References

FISH characterization of a dicentric Yq (p11.32) isochromosome in an azoospermic male. Codina-Pascual, M., Oliver-Bonet, M., Navarro, J., Starke, H., Liehr, T., Gutiérrez-Mateo, C., Sánchez-García, J.F., Arango, O., Egozcue, J., Benet, J. Am. J. Med. Genet. A (2004) [Pubmed]

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