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通过精确地区分内源性和外源性挥发物在呼吸中,推进呼吸学
Zhengnan Cen1, Yuerun Huang1, Shangzhewen Li1
1Department of Environmental Science & Engineering, Fudan University, Shanghai 200438, P. R. China.
Environmental science & technology
|September 28, 2024
概括
呼吸学准确性通过区分呼吸中的内部和外部挥发性有机化合物 (VOC) 来提高. 这项研究澄清了VOC的起源,提高了针对个性化医学的疾病诊断和暴露评估.
科学领域:
- 生物医学科学 生物医学科学
- 环境健康 环境健康
- 分析化学 分析化学
背景情况:
- 呼吸学对于暴露监测和诊断至关重要,但由于未确定因素影响呼出的挥发性有机化合物 (VOCs),其准确性受到限制.
- 在可靠的呼吸分析中,区分内源性 (内部产生的) 和外源性 (外部衍生的) 挥发性有机化合物至关重要.
研究的目的:
- 通过将呼出的VOC分类为内源和外源来增强呼吸学应用.
- 通过精确的VOC来源确定,提高暴露评估和临床诊断的准确性.
主要方法:
- 使用TD-GC × GC-TOF MS/FID对271名志愿者的环境空气和呼吸样本进行分析.
- 应用定量结构-属性关系和隔间模型来确定VOC动态参数和膜度.
- 在呼出的气息中识别和量化50种常见的VOC.
主要成果:
- 成功地对呼出的VOC进行了分类,确定了50种常见的化合物及其来源.
- 证明长时间暴露于外部污染物可以将个人转化为二次污染源.
- 发现内部的VOC暴露比外部暴露带来更大的健康风险.
- 对环境背景进行校正,胃肠道疾病诊断模型得到了15-25%的改进.
结论:
- 通过隔间建模精确确定VOC来源,显著推进了呼吸学.
- 这种方法提高了呼吸学在暴露评估和精准医学中的临床相关性.
- 这些发现支持了个性化呼吸学应用在医疗保健和环境监测中的潜力.
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