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Early hematopoiesis inhibition under chronic radiation exposure in humans.

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Date
2010-05
Authors
Akleyev, Alexander V
Akushevich, Igor V
Dimov, Georgy P
Veremeyeva, Galina A
Varfolomeyeva, Tatyana A
Ukraintseva, Svetlana V
Yashin, Anatoly I
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Abstract
The major goal of this study was to identify and quantitatively describe the association between the characteristics of chronic (low-dose rate) exposure to (low LET) ionizing radiation and cellularity of peripheral blood cell lines. About 3,200 hemograms (i.e., spectra of blood counts) obtained over the years of maximal exposure to ionizing radiation (1950-1956) for inhabitants of the Techa River were used in analyses. The mean cumulative red bone marrow dose (with standard errors), calculated using Techa River Dosimetry System-2000, was 333.6 +/- 4.6 mGy (SD = 259.9 mGy, max = 1151 mGy) to the year 1956. The statistical approach included both empirical methods for estimating frequencies of cytopenic states of the investigated blood cell lines (e.g. neutrophile, platelets, erythrocyte, etc.), and regression methods, including generalized linear models and logistic regressions which allowed taking into account confounding factors (e.g., attained age, age at maximal exposure, presence of concomitant diseases, and demographic characteristics). The results of the analyses demonstrated hematopoiesis inhibition manifested by a decrease in peripheral blood cellularity and an increase in the frequency of cytopenia in all blood cell lines (leukocytes, including lymphocytes, monocytes, neutrophiles, as well as platelets and erythrocytes). The intensity of hematopoiesis inhibition in the period of maximal exposures is determined by the combined influence of the dose rate and cumulative dose. The contribution of specific confounding factors was quantified and shown to be much less important than dose characteristics. The best predictor among dose characteristics was identified for each blood cell line. A 2-fold increase in dose rate is assumed to be a characteristic of radiosensitivity and a quantitative characteristic of the effect.
Type
Journal article
Subject
Blood Cell Count
Bone Marrow
Cell Line
Dose-Response Relationship, Radiation
Environmental Exposure
Female
Hematopoiesis
Humans
Leukocytes, Mononuclear
Male
Middle Aged
Radiation Dosage
Retrospective Studies
Time Factors
Permalink
https://hdl.handle.net/10161/14861
Published Version (Please cite this version)
10.1007/s00411-010-0269-1
Publication Info
Akleyev, Alexander V; Akushevich, Igor V; Dimov, Georgy P; Veremeyeva, Galina A; Varfolomeyeva, Tatyana A; Ukraintseva, Svetlana V; & Yashin, Anatoly I (2010). Early hematopoiesis inhibition under chronic radiation exposure in humans. Radiat Environ Biophys, 49(2). pp. 281-291. 10.1007/s00411-010-0269-1. Retrieved from https://hdl.handle.net/10161/14861.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
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Scholars@Duke

Igor Akushevich

Research Professor in the Social Science Research Institute
Ukraintseva

Svetlana Ukraintseva

Associate Research Professor in the Social Science Research Institute
Dr. Ukraintseva studies causes of human aging and related decline in resilience, to identify genetic and other factors responsible for the increase in mortality risk with age eventually limiting longevity. She explores complex relationships, including trade-offs, between physiological aging-changes and risks of major diseases (with emphasis on Alzheimer’s and cancer), as well as survival, to find new genetic and other targets for anti-aging interventions and disease prevention. S
Yashin

Anatoli I. Yashin

Research Professor in the Social Science Research Institute
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