文献类型：期刊文献

英文题名：Comprehensive pulmonary metabolome responses to intratracheal instillation of airborne fine particulate matter in rats

作者：Wang, Xiaofei[1,2];Jiang, Shoufang[3];Liu, Ying[3];Du, Xiaoyan[2];Zhang, Weibing[1];Zhang, Jie[2];Shen, Heqing[2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Sch Chem & Mol Engn, Shanghai, Peoples R China;[2]Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Beijing, Peoples R China;[3]North China Univ Sci & Technol, Hebei Prov Key Lab Occupat Hlth & Safety Coal Ind, Dept Occupat & Environm Hlth, Sch Publ Hlth, Tangshan, Hebei, Peoples R China

年份：2017

卷号：592

起止页码：41

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20171103438406);WOS:【SCI-EXPANDED(收录号:WOS:000400082100005)】；

基金：This work was financially supported by National Natural Science Foundation of China (21407143; 21677141; 91543113), the Ningbo Science and Technology Fund (2014A610284), the Knowledge Innovation Program of the Chinese Academy of Sciences (IUEZD201401), Youth Innovation Promotion Association, CAS (2015246).

语种：英文

外文关键词：Fine particulate matter; Pulmonary toxicity; Lipid metabolism; Purine metabolism

摘要：Airborne fine particulate matter (PM2.5) has been closely related with a variety of lung diseases. Although some modes of action (e.g. oxidative stress, inflammations) have been proposed, but the pulmonary toxicological mechanism remains obscure. In this paper, in order to understand the comprehensive pulmonary response to PM2.5 stress, a non-targeted high-throughput metabolomics strategy was adopted to characterize the overall metabolic changes and relevant toxicological pathways. PM2.5 samples were collected from Tangshan, one of the most polluted cities in China. Adult male rats were treated with PM2.5 suspension once a week at the dose of 1 mg/kg/week through intratracheal instillation in three months. Aqueous and organic metabolite extracts of the lung tissues were subjected to metabolomics analysis using ultra-high performance liquid chromatograph/mass spectrometry. Along with a significant increase of oxidative stress, significant metabolome alterations were observed in the lung tissues of the treated rats. Nineteen metabolites were found decreased and 31 metabolites increased, which are mainly involved in lipid and nucleotide metabolism. Integrated pathway analysis suggests that PM2.5 can induce pulmonary toxicity through disturbing pro-oxidant/antioxidant balance, which may further correlate with metabolism changes of phospholipid, glycerophospholipid, sphingolipid and purine. These findings improve our understanding of the toxicological pathways of PM2.5 exposure. (C) 2017 Published by Elsevier B.V.