Skip to main content
. Author manuscript; available in PMC: 2006 Apr 21.
Published in final edited form as: Aquat Toxicol. 2005 Aug 30;74(2):172–192. doi: 10.1016/j.aquatox.2005.05.009

Table 6.

Hydrolysis activity of synthetic pyrethroid surrogate substrates

Compounda Substrate Esterase activityb
1 graphic file with name nihms-9475-0004.jpg 8.46 ± 0.09
2 graphic file with name nihms-9475-0005.jpg 20.78 ± 0.68
3 graphic file with name nihms-9475-0006.jpg 37.72 ± 0.70
4 graphic file with name nihms-9475-0007.jpg 5.03 ± 0.26
5 graphic file with name nihms-9475-0008.jpg 14.69 ± 0.43
6 graphic file with name nihms-9475-0009.jpg 3.78 ± 0.10
7 graphic file with name nihms-9475-0010.jpg 38.16 ± 0.84
8 graphic file with name nihms-9475-0011.jpg 6.50 ± 0.28
a

Substrates are pyrethroid surrogates: compound 1 for esfenvalerate, 2 for fenvalerate, 3 for cypermethrin, 4 for deltamethrin, 5 for trans λ-cyhalothrin, 6 for cis λ-cyhalothrin, 7 for phenothrin, and 8 for fenpropathrin.

b

Activity is in nmol/min/mg protein using a commercial porcine esterase. No significant hydrolysis activity of the substrates (1-8) could be detected with any of the fish tissues examined in this study. Data are the average of 3 independent determinations ± the standard deviation.