Chromosomal cryptic insertion of the terminal region and its formative mechanism determined by fluorescence in situ hybridization / 中华医学杂志(英文版)
Chinese Medical Journal
;
(24): 1039-1042, 2002.
Artículo
en Inglés
| WPRIM
| ID: wpr-340390
ABSTRACT
<p><b>OBJECTIVE</b>To determine the karyotype of a cryptic structural abnormality and explore the mechanism of apparent chromosomal terminal deletion.</p><p><b>METHODS</b>Fluorescence in situ hybridization(FISH) with a whole chromosome 7 painting probe and a 7q subterminal probe (7q36-->qter), prepared by chromosome microdissection technique, was used to analyze a case with a history of spontaneous abortion and 7q terminal deletion detected by conventional G-banding technique.</p><p><b>RESULTS</b>The case was a maternal cryptic insertional translocation between chromosome region 1p32 and 7q32-->q35. The region of chromosome 7q36-->qter was not inserted in to chromosome 1, and the abnormal chromosome 7 was not a terminal deletion but an interstitial deletion.</p><p><b>CONCLUSIONS</b>Chromosome insertion of the terminal region retains its telomere, which is consistent with the concept of a three-break rearrangement. Interstitial deletion may be regarded as another mechanism for terminal deletion in the chromosome banding level. Combined with chromosome microdissection, FISH technique could be a powerful diagnostic tool for detecting chromosome structural abnormalities.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Cromosomas Humanos Par 1
/
Cromosomas Humanos Par 7
/
Aberraciones Cromosómicas
/
Hibridación Fluorescente in Situ
/
Métodos
Límite:
Adulto
/
Femenino
/
Humanos
Idioma:
Inglés
Revista:
Chinese Medical Journal
Año:
2002
Tipo del documento:
Artículo
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