辐射剂量和固体癌症死亡率风险在Techa河和东乌拉尔的放射性痕迹队列在1950-2016年
D L Preston1, L Y Krestinina2, D O Stram3
1Hirosoft International, Eureka, California.
Radiation research
|May 27, 2025
概括
这项研究量化了南乌拉尔地区居民长期低剂量辐射暴露的固体癌症死亡风险. 研究结果证实,辐射会增加癌症风险,即使在低剂量和剂量速度下也是如此.
科学领域:
- 环境健康 环境健康
- 辐射流行病学 辐射流行病学
- 在瘤学瘤学.
背景情况:
- 南乌拉尔地区的居民受到马雅克生产协会释放的慢性,低剂量,低剂量辐射.
- 研究了两个队列,即Techa River Cohort和East Urals Radioactive Trace Cohort,包括1950年至1960年间暴露的个体.
研究的目的:
- 为了估计暴露于慢性环境辐射的队列中的固体癌症的剂量依赖性死亡风险.
- 使用新的蒙特卡洛剂量计系统来估计剂量和剂量不确定性.
主要方法:
- 分析了47950人的队列,并提供了大量的随访数据 (25723人死亡,3783人死于固体癌症).
- 应用过度相对风险 (ERR) 模型,调整吸烟,以估计剂量反应关系.
- 使用最大概率方法和纠正的信息矩阵进行参数估计和置信区间计算,考虑剂量不确定性.
主要成果:
- 吸烟调整后的线性过剩相对风险 (ERR) 为0.060 (95% CI为0.018至0.108) / 100mGy,用于70岁时的固体癌症死亡率.
- 该ERR显示了显著的年龄依赖 (与年龄相对应的3.1).
- 对于胃癌和女性乳腺癌,观察到统计学上显著的ERR估计值;没有发现剂量响应的非线性证据.
结论:
- 低剂量,低剂量率的辐射暴露与增加固体癌症死亡风险有关.
- 这些发现与其他职业队列数据一致,并加强了辐射对癌症死亡率影响的证据.
- 该研究强调了与原子弹幸存者数据相比,风险的明显年龄依赖.
更多相关视频
06:20Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
7.3K
05:39Author Spotlight: Radiotherapy and Clonogenic Assays for Advancing Cancer Research and Personalized Medicine
Published on: April 5, 2024
964
相关概念视频
Biological Effects of Radiation
16.1K
All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
16.1K
Mutations
40.5K
Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
40.5K
Cancer Survival Analysis
458
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
458
Isotopes and Radioisotopes
10.2K
In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
An isotope containing...
10.2K
Radiation: Applications
1.3K
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
The average...
1.3K
Cancer Prevention
6.3K
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
6.3K
