{"title":"吸入pm2.5可加重非酒精性脂肪肝患者的炎症、氧化应激和细胞凋亡","authors":"Shen Xin, Jingjing Qu, Na Xu, Baohong Xu","doi":"10.4103/ed.ed_24_19","DOIUrl":null,"url":null,"abstract":"Background: Particulate matter under 2.5 μm (PM2.5) is a major risk factor for nonalcoholic fatty liver disease (NAFLD). This study aimed to investigate whether PM2.5could aggravate NAFLD, as well as its relative mechanisms. Materials and Methods: Male Sprague-Dawley rats were under PM2.5exposure and filtered air with NAFLD for 4, 6, and 8 weeks. Blood lipids were measured by enzyme-linked immunosorbent assay (ELISA). The histopathology of liver was determined by hematoxylin and eosin staining. ELISA assay was conducted for detecting inflammatory markers including interleukin-17 (IL-17) or tumor necrosis factor alpha (TNF-α) and for assessing oxidative stress-associated proteins, including superoxide dismutase (SOD) and malondialdehyde (MDA). Apoptosis was assessed by detecting B-cell lymphoma-2 (Bcl-2) and Bcl-2-associated X protein (BAX) by real-time polymerase chain reaction and Western blotting. Results: PM2.5exposure for 8 weeks, but not 4 or 6 weeks, significantly aggravated NAFLD, which was associated with the enhanced expression of IL-17 and TNF-α and the enhanced oxidative stress (SOD and MDA). Meanwhile, exposure PM2.5for 8 weeks, but not 4 or 6 weeks, regulated apoptosis (Bcl-2 and BAX). Conclusions: Exposure of PM2.5for 8 weeks can aggravate NAFLD, which may be mediated by liver inflammation, oxidative stress, and apoptosis.","PeriodicalId":11702,"journal":{"name":"Environmental Disease","volume":"6 1","pages":"62 - 68"},"PeriodicalIF":0.0000,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"PM2.5inhalation aggravates inflammation, oxidative stress, and apoptosis in nonalcoholic fatty liver disease\",\"authors\":\"Shen Xin, Jingjing Qu, Na Xu, Baohong Xu\",\"doi\":\"10.4103/ed.ed_24_19\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Background: Particulate matter under 2.5 μm (PM2.5) is a major risk factor for nonalcoholic fatty liver disease (NAFLD). This study aimed to investigate whether PM2.5could aggravate NAFLD, as well as its relative mechanisms. Materials and Methods: Male Sprague-Dawley rats were under PM2.5exposure and filtered air with NAFLD for 4, 6, and 8 weeks. Blood lipids were measured by enzyme-linked immunosorbent assay (ELISA). The histopathology of liver was determined by hematoxylin and eosin staining. ELISA assay was conducted for detecting inflammatory markers including interleukin-17 (IL-17) or tumor necrosis factor alpha (TNF-α) and for assessing oxidative stress-associated proteins, including superoxide dismutase (SOD) and malondialdehyde (MDA). Apoptosis was assessed by detecting B-cell lymphoma-2 (Bcl-2) and Bcl-2-associated X protein (BAX) by real-time polymerase chain reaction and Western blotting. Results: PM2.5exposure for 8 weeks, but not 4 or 6 weeks, significantly aggravated NAFLD, which was associated with the enhanced expression of IL-17 and TNF-α and the enhanced oxidative stress (SOD and MDA). Meanwhile, exposure PM2.5for 8 weeks, but not 4 or 6 weeks, regulated apoptosis (Bcl-2 and BAX). Conclusions: Exposure of PM2.5for 8 weeks can aggravate NAFLD, which may be mediated by liver inflammation, oxidative stress, and apoptosis.\",\"PeriodicalId\":11702,\"journal\":{\"name\":\"Environmental Disease\",\"volume\":\"6 1\",\"pages\":\"62 - 68\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Disease\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4103/ed.ed_24_19\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Disease","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/ed.ed_24_19","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
PM2.5inhalation aggravates inflammation, oxidative stress, and apoptosis in nonalcoholic fatty liver disease
Background: Particulate matter under 2.5 μm (PM2.5) is a major risk factor for nonalcoholic fatty liver disease (NAFLD). This study aimed to investigate whether PM2.5could aggravate NAFLD, as well as its relative mechanisms. Materials and Methods: Male Sprague-Dawley rats were under PM2.5exposure and filtered air with NAFLD for 4, 6, and 8 weeks. Blood lipids were measured by enzyme-linked immunosorbent assay (ELISA). The histopathology of liver was determined by hematoxylin and eosin staining. ELISA assay was conducted for detecting inflammatory markers including interleukin-17 (IL-17) or tumor necrosis factor alpha (TNF-α) and for assessing oxidative stress-associated proteins, including superoxide dismutase (SOD) and malondialdehyde (MDA). Apoptosis was assessed by detecting B-cell lymphoma-2 (Bcl-2) and Bcl-2-associated X protein (BAX) by real-time polymerase chain reaction and Western blotting. Results: PM2.5exposure for 8 weeks, but not 4 or 6 weeks, significantly aggravated NAFLD, which was associated with the enhanced expression of IL-17 and TNF-α and the enhanced oxidative stress (SOD and MDA). Meanwhile, exposure PM2.5for 8 weeks, but not 4 or 6 weeks, regulated apoptosis (Bcl-2 and BAX). Conclusions: Exposure of PM2.5for 8 weeks can aggravate NAFLD, which may be mediated by liver inflammation, oxidative stress, and apoptosis.