二恶英暴露下奶牛血液代谢组学研究
文献类型: 中文期刊
作者: 胡晓旭;许彤;陈旸升;谢群慧;郝艳芬;王楚;程劼;王璞;张庆华;徐丽;赵斌
作者机构:
关键词: 二恶英;奶牛;代谢组学;LC-MS
期刊名称:环境化学
ISSN: 0254-6108
年卷期: 2022 年
页码:
收录情况: SCIE(2022版) ; ; 北大核心(2020版) ; ; CSCD(2021-2022年度) ; ; 科技核心(2021版)
摘要: 旨在研究食用被PCDD/Fs污染的饲料对奶牛血液代谢组的影响.选择飞灰作为PCDD/Fs的载体,暴露期间将30 g飞灰与40 kg奶牛饲料均匀混合,使用配制的污染饲料饲喂奶牛,连续饲喂38 d后采集血液.采用液相色谱-质谱(LC-MS)联用技术对血液进行代谢组学分析,并且结合主成分分析(PCA)和正交偏最小二乘法判别分析(OPLS-DA)对代谢轮廓进行模式识别分析并筛选差异代谢产物.共鉴定差异代谢物50个,主要为氨基酸、胆酸、磷脂与脂肪酸类成分.将差异代谢物进行通路分析并注释,涉及19条代谢通路,主要与氨基酸、脂肪酸及胆碱代谢相关. PCDD/Fs暴露干扰了奶牛的脂肪酸代谢、氨基酸代谢、磷脂代谢、胆汁酸代谢,可作为PCDD/Fs暴露的靶标代谢通路供进一步的研究.
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