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The Effects of Diesel Exhaust Particles or Titanium Dioxide Nanoparticles on Pulmonary Inflammation.

机译:柴油机排气颗粒或二氧化钛纳米颗粒对肺部炎症的影响。

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摘要

Pulmonary exposure to particulate matter has been associated with development of pulmonary inflammation which can lead to pulmonary illnesses and diseases. Various cultures have turned to various dietary supplements to treat pulmonary inflammation. In this study, BEAS 2 B cells were pre-treated with curcumin or sulforaphane dietary extracts prior to diesel exhaust particle (DEP) challenge while MHS cells were exposed to various sizes of titanium dioxide nanoparticles. These two systems allowed me to examine whether particulates can up-regulate biomarkers of inflammation and whether supplements can mitigate inflammation via altering signal transduction in multiple pathways. I hypothesized that all particulate matter would activate pro-inflammatory signal transduction and pre-treatment with extracts would enhance antioxidant response after DEP challenge. In this study, inflammatory biomarkers were only enhanced in DEP challenged cells after supplement pre-treatment while only NQO-1 antioxidant response was enhanced. Inflammatory biomarkers were enhanced in cells exposed to the smallest-sized titanium dioxide particles.
机译:肺部接触颗粒物与肺部炎症的发展有关,肺部炎症会导致肺部疾病。各种文化已转向各种饮食补充剂来治疗肺部炎症。在这项研究中,BEAS 2 B细胞在姜黄素或萝卜硫素饮食提取物中进行了预处理,然后再挑战柴油机排气颗粒(DEP),而MHS细胞则暴露于各种尺寸的二氧化钛纳米颗粒中。这两个系统使我能够检查颗粒物是否可以上调炎症的生物标志物,以及补充剂是否可以通过改变多种途径的信号传导来减轻炎症。我假设所有颗粒物都会激活促炎信号转导,并且用提取物进行预处理会增强DEP攻击后的抗氧化反应。在这项研究中,炎症生物标记仅在补充预处理后的DEP攻击细胞中增强,而仅NQO-1抗氧化剂反应得到增强。在暴露于最小尺寸的二氧化钛颗粒的细胞中,炎症生物标记物得到增强。

著录项

  • 作者

    Griggs, Jennifer Lynn.;

  • 作者单位

    The University of North Carolina at Chapel Hill.;

  • 授予单位 The University of North Carolina at Chapel Hill.;
  • 学科 Health Sciences Toxicology.
  • 学位 M.S.
  • 年度 2011
  • 页码 68 p.
  • 总页数 68
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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