Table 1

Kinetic parameters for the ring methyl oxidation and N-deethylation of DEET by pooled HLM, RLM, MLM, and DEET treated mouse liver microsomes

BALC (Ring Methyl Oxidation)ET (N-Deethylation)
KmVmaxCLintKmVmaxCLint
μM nmol/mg protein/min 10−6/mg protein/min μM nmol/mg protein/min 10−6/mg protein/min
HLM67.6  ± 4.2b 12.9  ± 1.6a b 191.5  ± 15.4b 842.5  ± 49.9b 20.5  ± 3.4a 24.4  ± 5.1b
RLM38.3  ± 0.2a 17.6  ± 1.2a 461.3  ± 23.5a 214.3  ± 26.1a 19.2  ± 2.8a 89.5  ± 10.9a
MLM43.4  ± 0.6a b 6.8  ± 1.4b 156.8  ± 23.8b 660.6  ± 59.5b 14.5  ± 2.9a 21.7  ± 3.9b
MLM1-150 42.6  ± 13.6a b 16.4  ± 3.4a 385.1  ± 52.6a 630.9  ± 128.0b 22.9  ± 2.9a 38.3  ± 5.1b

Means in the same column followed by the same letter are not significantly different (P < 0.01). Values are the mean ± S.E.M. (n = 3).

  • 1-150  DEET treated animals LD10 (200 mg/kg/day).