Incidence and Clinical Significance of Sex Chromosome Losses in Bone Marrow of Patients with Hematologic Diseases / 대한진단검사의학회지
The Korean Journal of Laboratory Medicine
;
: 56-61, 2007.
Artigo
em Coreano
| WPRIM
| ID: wpr-35585
ABSTRACT
BACKGROUND:
Loss of sex chromosomes in bone marrow is observed both in elderly persons as an aging phenomenon and in patients with hematologic malignancies. The purpose of this study was to evaluate the incidence and clinical significance of sex chromosome losses in patients with hematologic diseases, comparing the characteristics between patients with sole and secondary sex chromosome losses in conjunction with other chromosomal abnormalities.METHODS:
Study group included 868 patients with hematologic diseases between June 1998 and May 2006. The cells of bone marrow aspirates were processed using unstimulated culture methods such as direct, 24-hr and/or 48-hr culture. Sex chromosome losses were included in the karyotype, when X or Y chromosome loss is observed in more than 2 metaphase cells.RESULTS:
The sex chromosome losses in bone marrow were found in 5.1% of the patients and 1.8% showed sex chromosome losses as a sole chromosomal abnormality. According to the disease categories, the incidences of sex chromosome losses were as follows acute myelogenous leukemia (AML), 9.5%; acute lymphoblastic leukemia, 0%; myelodysplastic syndrome, 6.0%; chronic myelogenous leukemia 3.6%; myeloproliferative disorders, 1.3%; multiple myeloma (MM), 13.0%; chronic lymphocytic leukemia, 0%; malignant lymphoma, 3.8%; and benign hematologic diseases 2.2%. The patients with sex chromosome losses as a sole chromosomal abnormality were all male and median age was higher than that of patients with sex chromosome losses as a secondary abnormality (64 vs. 58 yr, P=0.02). The proportion of metaphase cells with sex chromosome losses was significantly lower in patients with sex chromosome losses as a sole chromosomal abnormality (40% vs. 100%, P<0.0001). The changes of sex chromosome loss were correlated with the disease status of AML and MM.CONCLUSIONS:
These results suggest that secondary sex chromosome losses in conjunction with other chromosomal abnormalities seem to be one of the clonal abnormalities, whereas sex chromosome losses as a sole change seem to be an aging phenomenon, but further studies are needed.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Aberrações dos Cromossomos Sexuais
/
Células da Medula Óssea
/
Cromossomos Humanos X
/
Cromossomos Humanos Y
/
Doenças Hematológicas
Tipo de estudo:
Estudo de incidência
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Coreano
Revista:
The Korean Journal of Laboratory Medicine
Ano de publicação:
2007
Tipo de documento:
Artigo
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