Research Article

Spontaneous Production of Glutathione-Conjugated Forms of 1,2-Dichloropropane: Comparative Study on Metabolic Activation Processes of Dihaloalkanes Associated with Occupational Cholangiocarcinoma

Table 1

List of seven components picked up by differential analysis.

Halogenated hydrocarbonIDm/z (positive)Retention time (min)FormulaTheoretical m/z [M + H]+GSTT1 (+) versus GSTT1(−)
Ratio value

1,2-DCP#P2364.11723.2C13H21O7N3S364.11731.150.036
#P1382.08358.3C13H20O6N3SCl382.08342.180.000
DCM#M1320.09112.4C11H17O6N3S320.0911>100.032
#M2321.0944Isotope peak of #M1>100.031
#M3322.10683.0C11H19O6N3S322.1067>100.005
#M4418.06800.9C15H24ON3P5418.0680>100.008
#M5493.97940.9C18H5O7N7P2493.9798>100.002

1,2-DCP: 1,2-dichloropropane; DCM: dichloromethane; GSTT1: glutathione S-transferase theta 1. Component IDs #P2 and #P1 correspond to the same ones in Figure 1(c), respectively. Ideal m/z as [M + H]+ in positive ion mode was calculated based on the monoisotopic mass of corresponding formula. Ratio and value were determined by using the SIEVE 2.1 program.