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Chronic bronchitis and bronchial asthma: the impact of chronic occupational radiation exposure on incidence and mortality of Mayak nuclear workers.
J Radiol Prot
November 2024
Clinical department, Southern Urals Biophysics Institute, Ozyorsk, Chelyabinsk region, RUSSIAN FEDERATION.
The information about the radiation risk of non-cancer respiratory diseases is inconsistent and mainly corresponds to mortality. Previously, an increased risk of chronic bronchitis incidence was demonstrated in the cohort of workers employed at the first Russian nuclear facility Mayak Production Association who had been chronically exposed to gamma rays (externally) and to alpha-active plutonium aerosols (internally). Within this retrospective study, we performed analyses of incidence of and mortality from chronic bronchitis and bronchial asthma using improved estimates of radiation doses provided by the "Mayak Worker Dosimetry System (MWDS) - 2013".
View Article and Find Full Text PDFIncidence risk of hepatobiliary malignant neoplasms in the cohort of workers chronically exposed to ionizing radiation.
Sci Rep
July 2024
Clinical Department, Southern Urals Biophysics Institute Affiliated to the Federal Medical Biological Agency, Ozyorsk, Russian Federation, 456780.
Article Synopsis
- Workers at the Mayak Production Association faced increased risks of liver cancers due to chronic exposure to gamma rays and inhalation of plutonium, leading to updated assessments of liver malignancies from 1948 to 2018.
- The study analyzed 62 liver malignancies and found a significant link between internal exposure to alpha radiation and the risk of various liver cancers, particularly hepatocellular carcinoma.
- No correlation was found between external gamma-ray exposure and liver cancer rates, and gallbladder cancer incidence showed no association with occupational radiation exposure.
Risk of central nervous system tumour incidence in a cohort of workers chronically exposed to ionising radiation.
Radiat Environ Biophys
March 2024
Clinical Department, Southern Urals Biophysics Institute (SUBI), Ozyorsk, Chelyabinsk Region, Russia.
The aim of the present study was to assess the risk of primary central nervous system (CNS) tumour incidence in a cohort of 22,377 Mayak Production Association workers chronically exposed to ionising radiation. There were 96 primary CNS tumours, including 42 cases of glioma and 44 cases of meningioma, registered during the whole follow-up period (1948-2018). The study demonstrated that the risk of primary CNS tumour incidence was associated with sex, attained age, calendar period, tall body height, age at the beginning of exposure, and facility type.
View Article and Find Full Text PDFImmunohistochemical Analysis of Lung Adenocarcinoma in Russian Mayak Nuclear Workers.
Cancer Invest
September 2023
South Ural State Medical University, Ministry of Health, Chelyabinsk, Russia.
Specimens of lung adenocarcinoma (AdCa) from Russian nuclear workers ( = 54) exposed to alpha particles and gamma rays and from individuals non-exposed to radiation ( = 21) were examined using immunohistochemistry. Estimated significant associations with alpha dose were negative for Ki-67 and collagen IV in AdCa. Associations with gamma-ray dose were negative for tissue inhibitor of matrix metalloproteinase 2 and caspase 3 and positive for matrix metalloproteinase 2 and leukemia inhibiting factor in AdCa.
View Article and Find Full Text PDFDose rate effect on mortality from ischemic heart disease in the cohort of Russian Mayak Production Association workers.
Sci Rep
February 2023
Biology and Environmental Chemistry Division, Sustainable System Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Tokyo, Japan.
For improvement of the radiation protection system it is crucial to know the factors that modify the radiation dose-response relationship. One of such key factors is the ionizing radiation dose rate. There are, however, very few studies that examine the impact of the dose rate on radiogenic risks observed in human cohorts exposed to radiation at various dose rates.
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