Principales factores que producen fragilidad cromosómica transitoria en los pacientes referidos para estudio citogenético / Main factors that produce transitory chromosomic fragility in the patients referred for cytogenetic study
Rev. Hosp. Clin. Univ. Chile
;
20(1): 20-27, 2009. tab
Article
Dans Espagnol
| LILACS
| ID: lil-545864
ABSTRACT
The fragile sites are specific loci that show fractures during karyotyping perform under specific laboratory conditions. Are present in normal individuals and are classified by their population frequency. These sites have been associated with an increase in chromosome fragility, fractures and other chromosomal abnormalities. In recent years, the fragile sites have taken great importance because they represent regions in the genome that are particularly sensitive to replicative stress and are frequently rearrenged in tumor cells. Multiple risk factors endogenous and exogenous have been involved in the increase in chromosome fragility, including microorganisms, drugs, illegal drugs and toxins. The fragile sites have provided insight into understanding of the effects of replicative stress on DNA damage and genomic instability in cancer cells. In this work we aim to summarize the limited information available about the topic, and the clinical significance of fragile sites in vivo in the laboratory.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Fragilité des chromosomes
/
Analyse cytogénétique
Type d'étude:
Facteurs de risque
Limites du sujet:
Femelle
/
Humains
/
Mâle
langue:
Espagnol
Texte intégral:
Rev. Hosp. Clin. Univ. Chile
Thème du journal:
Médicament
Année:
2009
Type:
Article
Pays d'affiliation:
Chili
Institution/Pays d'affiliation:
Universidad de Chile/CL
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