Research Article

1H-NMR Based Serum Metabolomics Study to Investigate Hepatoprotective Effect of Qin-Jiao on Carbon Tetrachloride-Induced Acute Hepatotoxicity in Rats

Table 2

Assignment results of the identified metabolites, chemical shifts, and related metabolic pathways.

NumberMetabolitesMoietiesδ1H (ppm) and multiplicityRelated pathway

(1)LDL/VLDLCH20.82(m), 0.86(m), 1.26(m)Synthesis of LDL/VLDL
(2)IsoleucineγCH3, αCH30.93(t), 1.00(d)Gluconeogenesis of glucogenic amino acid/proteolysis
(3)LeucineδCH3, δCH30.94(d), 0.96(d)Ketogenesis of ketogenic amino acids/proteolysis
(4)ValineγCH3, γCH31.03(d); 0.97(d)Gluconeogenesis of glucogenic amino acid/proteolysis
(5)3-HydroxybutyrateγCH31.19(d)Synthesis and degradation of ketone bodies
(6)LactateβCH3, CH1.33(d), 4.06(q)Glycolysis and gluconeogenesis
(7)AlanineβCH31.46(d)Gluconeogenesis of glucogenic amino acid/proteolysis
(8)LysineαCH2, γCH21.88(m), 1.72(m)Ketogenesis of ketogenic amino acids
(9)AcetateCOCH31.90(d)β-Oxidation of fatty acids
(10)AcetoneCO(CH3)22.22(s)Synthesis and degradation of ketone bodies
(11)AcetoacetateCOCH32.28(s)Synthesis and degradation of ketone bodies
(12)GlutamateβCH22.34(m)Glutamate metabolism/nitrogen metabolism
(13)PyruvateCOCH32.37(s)Glycolysis/gluconeogenesis/TCA cycle
(14)Succinate(COCH2)22.40(s)TCA cycle
(15)GlutamineβCH22.40–2.48(m)Glutamate metabolism/nitrogen metabolism
(16)Citrate1/2CH2, 1/2CH22.65–2.70(d); 2.20–2.55(d)TCA cycle
(17)N,N-DimethylglycineN(CH3)22.90(s)Glycine, serine and threonine metabolism
(18)CreatineN-CH3, N-CH2-4.05(s); 3.04(s)Creatine metabolism
(19)CholineN(CH3)33.18–3.19(s)Choline metabolism
(20)O-PhosphocholineN(CH3)33.22(s)Choline metabolism
(21)BetaineN(CH3)33.26(s)Betaine metabolism
(22)GlycineCH23.54(s),Glycine, serine, and threonine metabolism
(23)GlucoseCH5.20(d), 4.66(d), 3.70–3.90(m), 3.30–3.50(m), 3.84(m)Glycolysis and gluconeogenesis
(24)SerineCH23.94(d)Glycine and serine metabolism/ketogenesis of ketogenic amino acids
(25)FumarateCH=CH6.50(s)TCA cycle
(26)Tyrosineph-H7.20(d), 6.86(d)Tyrosine metabolism/ketogenesis of ketogenic amino acids
(27)-MethylhistidineCH-N-CH=7.65(s), 7.02(s)Histidine metabolism
(28)Phenylalanineph-H7.30(m)Phenylalanine and tyrosine metabolism
(29)FormateHCOO8.46(s)Formate metabolism