消防员的职业暴露,为野火季节做准备:解决生物影响
Filipa Esteves1,2,3,4, Klara Slezakova5, Joana Madureira1,2,3
1Environmental Health Department, National Institute of Health, Rua Alexandre Herculano, n° 321, 4000-055 Porto, Portugal.
Toxics
|March 27, 2024
概括
野生地区的消防员.
科学领域:
- 环境健康 环境健康
- 职业医学 职业医学是专业的.
- 毒理学 毒理学 毒理学
背景情况:
- 野地消防员面临的职业暴露超出了积极的灭火.
- 消防站环境是潜在的颗粒物暴露源.
- 了解野火季节前的暴露对于建立基线健康数据至关重要.
研究的目的:
- 描述葡萄牙北部消防局的野地消防员对PM10和PM2.5的职业暴露情况.
- 通过口腔微核细胞组 (BMCyt) 试验,评估估计的吸入PM剂量的生物影响.
- 研究生活方式因素 (补充剂,咖啡,蔬菜) 对生物终点的影响.
主要方法:
- 这项研究涉及2021年野火季节前北葡萄牙172名野地消防员.
- 计算了PM10和PM2.5的估计吸入剂量.
- 口腔微核细胞组 (BMCyt) 测定是在80名消防员的脱皮口腔细胞上进行的.
- 收集了关于营养补充剂摄入量,咖啡和蔬菜消费量的数据.
主要成果:
- 在估计的吸入PM剂量和生物终点 (微核频率) 之间没有发现显著的关联.
- 在永久干预小组 (全职消防员) 中观察到细胞死亡参数增加.
- 营养补充剂摄入与微核频率下降相关.
- 咖啡消费与细胞死亡增加有关,而蔬菜摄入量则显示下降.
结论:
- 在野火季节前的消防站环境中,PM暴露和DNA损伤标记之间没有直接联系.
- 生活方式因素显著调节了野地消防员的生物反应.
- 这些发现为活跃野火季节的未来研究提供了基线,强调了饮食和补充剂的重要性.
相关概念视频
02:59Biological Effects of Radiation
15.4K
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...
15.4K
01:25Transmission-based Precautions II: Airborne and Protective Environment
1.2K
Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions.
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
Airborne precautions:
Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
1.2K
01:36Types of Toxins
1.7K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
1.7K