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[The rabbit experimental study for toxicokinetics of chlorpyrifos impacted by hemoperfusion]
Xiang Guo1, Xiao Chen, Hongshun Zhang
1Shen Zhen Prevention and Treatment Center for Occupational Disease, Shen Zhen 518001, China.
Objective:
To investigate toxicokinetic parameters impacted by hemoperfusion after oral chlorpyrifos exposure, to investigate the adsorption effect of hemoperhusion for chlorpyrifos poisoning.
Methods:
12 rabbits were divided into two groups after oral exposure with chlorpyrifos 300 mg/kg body weight. Control group: without hemoperfusion; hemoperfusion group: hemoperfusion starts 0.5 h after chlorpyrifos exposure and lasts for 2h. Blood samples were collected at different times, concentrations of chlorpyrifos were tested by GC, then, toxicokinetic parameterswere calculated and analysis by DAS3.0.
Results:
In hemoperfusion group, peak time was (7.19±3.74) h, peak concentrations was (1.37±0.56) mg/L, clearance rate was (13.93±10.27) L/h/kg, apparent volume of distribution was (418.18±147.15) L/kg The difference of these parameter were statistically significant compared with control group (P<0.05).
Conclusion:
Hmoperfusion will decrease the inner exposure and load dose of rabbits with chlorpyrifos poisoning.
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