Protein Information

Name carboxylesterase 1
Synonyms ACAT; Cholesteryl ester hydrolase; CES1; SES 1; SES1; ANAE; Acid esterase; Acyl coenzyme A cholesterol acyltransferase…

Compound Information

Name deltamethrin
CAS

Reference List

PubMed Abstract RScore(About this table)
16855054 Godin SJ, Scollon EJ, Hughes MF, Potter PM, DeVito MJ, Ross MK: Species differences in the in vitro metabolism of deltamethrin and esfenvalerate: differential oxidative and hydrolytic metabolism by humans and rats. Drug Metab Dispos. 2006 Oct;34(10):1764-71. Epub 2006 Jul 19.

Results of CE metabolism revealed that human carboxylesterase 1 (hCE-1) was markedly more active toward deltamethrin than the class 1 rat CEs hydrolase A and B and the class 2 human CE (hCE-2); however, hydrolase A metabolized esfenvalerate 2-fold faster than hCE-1, whereas hydrolase B and hCE-1 hydrolyzed esfenvalerate at equal rates.
31(0,1,1,1) Details
17442360 Crow JA, Borazjani A, Potter PM, Ross MK: Hydrolysis of pyrethroids by human and rat tissues: examination of intestinal, liver and serum carboxylesterases. Toxicol Appl Pharmacol. 2007 May 15;221(1):1-12. Epub 2007 Mar 12.

Moreover, a 6-fold interindividual variation in carboxylesterase 1 protein expression in human hepatic cytosols was observed.
We found that the pyrethroid trans-permethrin is effectively hydrolyzed by a sample of pooled human intestinal microsomes (5 individuals), while deltamethrin and bioresmethrin are not.
1(0,0,0,1) Details
16169030 Anand SS, Bruckner JV, Haines WT, Muralidhara S, Fisher JW, Padilla S: Characterization of deltamethrin metabolism by rat plasma and liver microsomes. Toxicol Appl Pharmacol. 2006 Apr 15;212(2):156-66. Epub 2005 Sep 16.

The rate constants for liver carboxylesterases were Vmax=1981.8+/-132.3 nmol/h/g liver and Km=172.5+/-22.5 microM.
1(0,0,0,1) Details