在新英格兰北部,尿道变异性和膀癌风险在新英格兰北部
Jason Y Y Wong1,2, Alexander H Fischer2, Dalsu Baris2
1Epidemiology and Community Health Branch, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA.
Environmental and molecular mutagenesis
|March 11, 2024
概括
尿路突变性,基因毒性暴露的标志物,与从未吸烟者增加膀癌症风险有关. 这一发现表明,未知的环境或生活方式因素有助于该人群中膀癌的发展.
科学领域:
- 环境健康 环境健康
- 毒理学 毒理学 毒理学
- 癌症流行病学 癌症流行病学
背景情况:
- 在从未吸烟的人和没有已知的职业或环境暴露于致癌物质的人中,膀癌的原因尚不清楚.
- 尿路变异性作为最近暴露于基因毒性物质的综合生物标志物.
- 研究尿路突变性可能为特定人群的膀癌的病因提供了洞察力.
研究的目的:
- 在从未吸烟者中检查尿路变异性和膀癌症风险之间的关联.
- 在基于人口的队列中探索潜在的未知基因毒性暴露导致膀癌的可能性.
- 评估尿路突变性作为膀癌病因学的生物标志物的实用性.
主要方法:
- 一项涉及156例膀癌病例和247名来自新英格兰北部农村的无癌症对照的病例控制研究.
- 使用艾姆斯试验 (沙门氏菌菌株YG1041+S9) 分析一夜间尿样的致变性.
- 使用后勤回归模型估计几率比率 (OR) 和95%置信区间 (CI),调整共变量并按吸烟状况分层.
主要成果:
- 在从未吸烟者中发现了致变性尿液和膀癌风险增加之间的显著关联 (OR = 3.8,95% CI: 1.3-11.2).
- 在以前或现在的吸烟者中没有观察到任何显著的关联.
- 没有吸烟者对照组的突变性不能归因于评估的职业或环境致癌物.
结论:
- 尿路变异性可能表明相关的基因毒性暴露会导致从不吸烟者发展膀癌.
- 这些发现凸显了未识别的暴露特征在非吸烟者膀癌症发生中的潜在作用.
- 需要进一步的研究来确定特定的化合物和来源,负责这种观察到的致变性和相关风险.
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