A Comparison Study of Metaphase Analysis of Chromosomal Aberration and Flow Cytometric Assessment of Radiation- induced Apoptosis in Human Peripheral Lymphocytes / 대한핵의학회잡지
Korean Journal of Nuclear Medicine
; : 94-99, 1999.
Article
em Ko
| WPRIM
| ID: wpr-15852
Biblioteca responsável:
WPRO
ABSTRACT
PURPOSE: Radiation-induced chromosomal damage and apoptosis were compared in human lymphocytes. MATERIALS AND METHODS: Peripheral lymphocytes from 10 normal volunteers (6 males, 4 females, age range 23~41 years) were irradiated by gamma rays from a cell irradiator. Doses of irradiation were 0 (control), 0.18, 2, 5, 10, 20 and 25 Gy. Irradiated lymphocytes were examined by metaphase analysis for chromosomal aberrations and by flow cytometry for apoptosis. RESULTS of both studies were compared according to dose. RESULTS: Number of dicentric and ring chromosomes (D+R) was 0.5+/-0.53 at baseline, which was significantly increased after radiation according to the dose. The fraction of cells showing annexin V-fluore-scein isothiocyanate uptake was 0.55+/-0.39%, which increased to 3.58+/-1.85% by 2 Gy irradiation, and then decreased. The fraction of cells showing propidium iodide (PI) uptake was 0.52+/-0.12%, which significantly increased according to dose (upto 15.64+/-5.99% by 20 Gy irradiation). D+R and PI uptake were well correlated (r=0.84, p<0.001). CONCLUSION: Radiation-induced chromosomal aberration was correlated to nuclear uptake of PI, a marker of late apoptosis.
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Texto completo:
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Índice:
WPRIM
Assunto principal:
Propídio
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Lesões por Radiação
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Cromossomos em Anel
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Linfócitos
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Aberrações Cromossômicas
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Apoptose
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Voluntários Saudáveis
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Citometria de Fluxo
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Raios gama
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Metáfase
Limite:
Female
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Humans
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Male
Idioma:
Ko
Revista:
Korean Journal of Nuclear Medicine
Ano de publicação:
1999
Tipo de documento:
Article