Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (3): 431.doi: 10.7503/cjcu20190615
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HE Yu1,XIA Qian1,WANG Wenli1,LUO Fang2,CHEN Jinfeng3,GUO Yating1,WANG Jian1,LIN Zhenyu1,*,CHEN Guonan1,*
Received:
2019-11-27
Online:
2020-03-10
Published:
2020-01-07
Contact:
Zhenyu LIN,Guonan CHEN
Supported by:
CLC Number:
TrendMD:
HE Yu, XIA Qian, WANG Wenli, LUO Fang, CHEN Jinfeng, GUO Yating, WANG Jian, LIN Zhenyu, CHEN Guonan. Triglycerides as Potential Biomarkers for Pesticides Pollution in Aquatic Environment Using UPLC-QTOF-MS [J]. Chem. J. Chinese Universities, 2020, 41(3): 431.
Fig.1 Total ion chromatograms(TIC) of brain(A) and liver tissues(B) (A1, B1) Blank; (A2, B2) exposure in trichlorfon; (A3, B3) exposure in β-cypermethrin; (A4, B4) exposure in imidacloprid.
Fig.2 Volcano plots of endogenous metabolites(n=12, *P<0.05) (A1) Trichlorfon-treated brain; (A2) trichlorfon-treated liver; (B1) β-cypermethrin-treated brain; (B2) β-cypermethrin-treated liver; (C1) imidacloprid-treated brain; (C2) imidacloprid-treated liver.
Fig.3 Binary contrast spectra of brain(A) and liver(B) tissues (A1) Base peak intensity(BPI) of brain exposed for 0 and 2 h; (A2) chromatogram of difference in brain; (A3) mass spectrum of difference in brain; (B1) BPI of liver exposed for 0 and 2 h; (B2) chromatogram of difference in liver; (B3) mass spectrum of difference in liver.
Sample | Component, m/z | Unknown intensity/ counts | Reference intensity/ counts | Unknown/ reference | Observed retention time/min |
---|---|---|---|---|---|
In brain | 806.5728 | 3092718 | 3191399 | 0.9691 | 1.37 |
896.7709 | 2516408 | 2318847 | 1.0852 | 1.24 | |
870.7539 | 1748903 | 1984113 | 0.8815 | 1.23 | |
898.7881 | 1546268 | 1502813 | 1.0289 | 1.54 | |
832.5871 | 1376215 | 1468047 | 0.9374 | 1.33 | |
872.7726 | 1266039 | 1342851 | 0.9428 | 1.54 | |
In liver | 896.7709 | 4236852 | 287846 | 14.7192 | 1.22 |
898.7881 | 3388133 | 181398 | 18.6779 | 1.52 | |
872.7726 | 2467030 | 158469 | 15.5679 | 1.52 | |
900.8013 | 2209446 | 227011 | 9.7328 | 1.79 | |
874.7853 | 2057944 | 266732 | 7.7153 | 1.79 | |
806.5728 | 3340418 | 3378909 | 0.9886 | 1.37 | |
832.5871 | 2278588 | 2178444 | 1.046 | 1.33 | |
146.1175 | 119687 | 124507 | 1.056 | 2.99 |
Sample | Component, m/z | Unknown intensity/ counts | Reference intensity/ counts | Unknown/ reference | Observed retention time/min |
---|---|---|---|---|---|
In brain | 806.5728 | 3092718 | 3191399 | 0.9691 | 1.37 |
896.7709 | 2516408 | 2318847 | 1.0852 | 1.24 | |
870.7539 | 1748903 | 1984113 | 0.8815 | 1.23 | |
898.7881 | 1546268 | 1502813 | 1.0289 | 1.54 | |
832.5871 | 1376215 | 1468047 | 0.9374 | 1.33 | |
872.7726 | 1266039 | 1342851 | 0.9428 | 1.54 | |
In liver | 896.7709 | 4236852 | 287846 | 14.7192 | 1.22 |
898.7881 | 3388133 | 181398 | 18.6779 | 1.52 | |
872.7726 | 2467030 | 158469 | 15.5679 | 1.52 | |
900.8013 | 2209446 | 227011 | 9.7328 | 1.79 | |
874.7853 | 2057944 | 266732 | 7.7153 | 1.79 | |
806.5728 | 3340418 | 3378909 | 0.9886 | 1.37 | |
832.5871 | 2278588 | 2178444 | 1.046 | 1.33 | |
146.1175 | 119687 | 124507 | 1.056 | 2.99 |
Fig.4 Effect of exposure time on endogenous metabolite(m/z 896.7709) (A) BPI of endogenous metabolite(m/z 896.7709). Exposure time/h: a. 0; b. 2; c. 4; d. 6; e. 8; f. 10; (B) mass spectrum of endogenous metabolite(m/z 896.7709); (C) effect of exposure time on peak area of endogenous metabolite(m/z 896.7709)(n=12, *P<0.05).
Experimental accurate m/z | Theoretical m/z | 106δ | Chemical formula | Lipid name | Ion |
---|---|---|---|---|---|
806.5728 | 806.5694 | 4 | C46H80NO8P | PC(38:6) | [M+H]+ |
832.5871 | 832.5851 | 2 | C48H82NO8P | PC(40:7) | [M+H]+ |
872.7726 | 872.7702 | 3 | C55H98O6 | TG(52:4) | [M+NH4]+ |
874.7867 | 874.7858 | 1 | C55H100O6 | TG(52:3) | [M+NH4]+ |
896.7709 | 896.7702 | 1 | C57H98O6 | TG(54:6) | [M+NH4]+ |
898.7881 | 898.7858 | 3 | C57H100O6 | TG(54:5) | [M+NH4]+ |
900.8013 | 900.8015 | 0 | C57H102O6 | TG(54:4) | [M+NH4]+ |
Experimental accurate m/z | Theoretical m/z | 106δ | Chemical formula | Lipid name | Ion |
---|---|---|---|---|---|
806.5728 | 806.5694 | 4 | C46H80NO8P | PC(38:6) | [M+H]+ |
832.5871 | 832.5851 | 2 | C48H82NO8P | PC(40:7) | [M+H]+ |
872.7726 | 872.7702 | 3 | C55H98O6 | TG(52:4) | [M+NH4]+ |
874.7867 | 874.7858 | 1 | C55H100O6 | TG(52:3) | [M+NH4]+ |
896.7709 | 896.7702 | 1 | C57H98O6 | TG(54:6) | [M+NH4]+ |
898.7881 | 898.7858 | 3 | C57H100O6 | TG(54:5) | [M+NH4]+ |
900.8013 | 900.8015 | 0 | C57H102O6 | TG(54:4) | [M+NH4]+ |
Fig.5 Comparison in detected MS/MS spectra and predicted MS/MS spectra in HMDB (A) Detected MS/MS spectrum of m/z 806.5728; (B) detected MS/MS spectrum of m/z 896.7709; (C) predicted MS/MS spectrum of m/z 806.5728; (D) predicted MS/MS spectrum of m/z 896.7709.
Fig.6 Effect of exposure concentration(n=12, *P<0.05) (A) Heatmap of the metabolites in fish liver exposed to different concentrations(0, 1, 2, 5, 10, 20 ng/mL) of imidacloprid for 2 h. Each concentration is represented in columns, and each metabolites in lines. Blue indicates low content, whereas red indicates high content; (B) Michaelis Menten equation fitting curve of m/z 896.7709 change with exposure concentration.
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