Interphase fluorescence in situ hybridization in a Turner syndrome variant with IsoXq. A case report.
J Reprod Med
; 41(3): 175-8, 1996 Mar.
Article
en En
| MEDLINE
| ID: mdl-8778416
ABSTRACT
BACKGROUND:
Performing fluorescence in situ hybridization (FISH) on uncultured amniotic fluid cells has been known to produce rapid diagnoses of major chromosomal aberrations. However, if the aberration involves a structural chromosomal anomaly, the FISH result may be not only uninformative but misleading. CASE FISH with alpha-satellite probes of chromosomes X and Y was performed on the uncultured amniocytes of a prenatal amniotic fluid specimen. Eighty-five percent of the hybridized interphase nuclei displayed two signals when probing with X; no significant hybridization was found when probing with Y. This FISH result was interpreted as normal, disomic for chromosome X. Cytogenetic analysis later, however, disclosed the fetal karyotype to be 46,X,i(Xq).CONCLUSION:
Interphase FISH with an alpha-satellite probe (or probe made of repeat centromeric sequences) may be useful in the detection of a numerical anomaly of a chromosome but not of a structural anomaly within the chromosome itself.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Síndrome de Turner
/
Líquido Amniótico
Tipo de estudio:
Diagnostic_studies
Límite:
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
J Reprod Med
Año:
1996
Tipo del documento:
Article
País de afiliación:
China