PMID- 23045145 OWN - NLM STAT- MEDLINE DCOM- 20130308 LR - 20220310 IS - 1934-9262 (Electronic) IS - 1934-9254 (Linking) VI - Chapter 4 DP - 2007 TI - Measurement of soluble epoxide hydrolase (sEH) activity. PG - Unit 4.23 LID - 10.1002/0471140856.tx0423s33 [doi] AB - The human soluble epoxide hydrolase (sEH; EC 3.3.3.2) is the product of the EXPH2 gene. The sEH catalyzes the addition of a water molecule to an epoxide, resulting in the corresponding diol. Early work suggested a role of sEH in detoxifying a wide array of xenobiotic epoxides; however, recent findings clearly implicate the sEH in the regulation of blood pressure, pain, and inflammation through the hydrolysis of endogenous epoxy fatty acids such as epoxyeicosatrienoic acids (EETs). Both expression and activity of sEH are influenced by a wide array of xenobiotics, underlying how environmental contaminants could influence human health through sEH. This unit describes radiometric, fluorimetric, and mass spectrometric assays for measuring the activity of sEH and its inhibition. FAU - Morisseau, Christophe AU - Morisseau C AD - University of California at Davis, Davis, California, USA. FAU - Hammock, Bruce D AU - Hammock BD LA - eng GR - P30 ES05707/ES/NIEHS NIH HHS/United States GR - P42 ES004699/ES/NIEHS NIH HHS/United States GR - R37 ES02710/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Curr Protoc Toxicol JT - Current protocols in toxicology JID - 9816330 RN - 0 (Environmental Pollutants) RN - 0 (Enzyme Inhibitors) RN - 0 (Epoxy Compounds) RN - 0 (Small Molecule Libraries) RN - 0 (Xenobiotics) RN - EC 3.3.2.- (Epoxide Hydrolases) SB - IM MH - Chromatography, Liquid MH - Environmental Pollutants/metabolism MH - Enzyme Inhibitors/pharmacology MH - Epoxide Hydrolases/antagonists & inhibitors/*metabolism MH - Epoxy Compounds/metabolism MH - Fluorometry MH - High-Throughput Screening Assays MH - Humans MH - Inactivation, Metabolic MH - Small Molecule Libraries/pharmacology MH - Solubility MH - Substrate Specificity MH - Tandem Mass Spectrometry MH - Xenobiotics/metabolism EDAT- 2007/08/01 00:00 MHDA- 2013/03/09 06:00 CRDT- 2012/10/10 06:00 PHST- 2012/10/10 06:00 [entrez] PHST- 2007/08/01 00:00 [pubmed] PHST- 2013/03/09 06:00 [medline] AID - 10.1002/0471140856.tx0423s33 [doi] PST - ppublish SO - Curr Protoc Toxicol. 2007;Chapter 4:Unit 4.23. doi: 10.1002/0471140856.tx0423s33.