Strontium-90 in Baby Teeth as a Basis for Estimating U.S. Cancer Deaths From Nuclear Weapons Fallout.

0 HEALTH CARE SCIENCES & SERVICES
Joseph Mangano, Kelli S Gaus, Timothy A Mousseau, Michael Ketterer
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引用次数: 1

Abstract

Nuclear weapons testing in the atmosphere during the 1950s and 1960s deposited fallout throughout the world, exposing all humans to food and water before the Limited Test Ban Treaty ended large-scale tests. The largest effort to measure in vivo fallout in humans, performed by Washington University (USA), collected over 300,000 deciduous teeth to document a sustained increase in Strontium-90 (Sr-90) during testing and a sharp decline after the test ban. Sr-90 patterns and trends in teeth were consistent with those of bones and milk. Sr-90 is still detectable in about 100,000 of the teeth, which were never tested. Tooth donors were born during atmospheric testing (1946-1965) and thus exposed to fallout in utero and during infancy/childhood, when exposures pose the greatest health risk. Preliminary analysis of global fallout's health risk in the United States indicates recent cancer mortality in several high-fallout areas exceeded that of states with the lowest fallout, peaking for the cohort born in the early 1960s, when fallout was highest. These findings support subsequent measurement of Sr-90 in deciduous teeth of persons who died of diseases such as cancer, along with controls, a novel approach to assessing fallout hazards.

乳牙中的锶-90作为估计美国因核武器沉降物导致的癌症死亡的基础。
20世纪50年代和60年代在大气中进行的核武器试验使放射性尘埃遍布世界各地,在《有限禁止核试验条约》终止大规模试验之前,所有人类都暴露于食物和水之下。美国华盛顿大学(Washington University)进行了一项最大的测量人体体内放射性尘埃的工作,收集了30多万颗乳牙,记录了锶-90 (Sr-90)在测试期间持续增加,在禁试后急剧下降。牙齿中Sr-90的模式和趋势与骨骼和牛奶中的一致。在大约10万颗从未检测过的牙齿中仍可检测到Sr-90。牙齿捐赠者是在大气试验期间出生的(1946-1965年),因此在子宫内和婴儿期/儿童期接触过放射性尘埃,此时接触对健康构成最大风险。对美国全球放射性尘埃健康风险的初步分析表明,最近几个放射性尘埃高地区的癌症死亡率超过了放射性尘埃最低的州,在1960年代初出生的人群中达到顶峰,当时的放射性尘埃最高。这些发现支持随后对死于癌症等疾病的人乳牙中Sr-90的测量,这是评估放射性沉降物危害的一种新方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
6.40
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