Protein Information

Name acylpeptide hydrolase
Synonyms AARE; DNF15S2; ACPH; APEH; APH; Acyl peptide hydrolase; Acylamino acid releasing enzyme; Acylaminoacyl peptidase…

Compound Information

Name dichlorvos
CAS 2,2-dichloroethenyl dimethyl phosphate

Reference List

PubMed Abstract RScore(About this table)
19379766 Olmos C, Sandoval R, Rozas C, Navarro S, Wyneken U, Zeise M, Morales B, Pancetti F: Effect of short-term exposure to dichlorvos on synaptic plasticity of rat hippocampal slices: involvement of acylpeptide hydrolase and alpha (7) nicotinic receptors. Toxicol Appl Pharmacol. 2009 Jul 1;238(1):37-46. Epub 2009 Apr 18.

A few years ago it was reported that dichlorvos inhibits the enzyme acylpeptide hydrolase at lower doses than those necessary to inhibit acetylcholinesterase to the same extent.
275(3,4,4,5) Details
10953051 Richards PG, Johnson MK, Ray DE: Identification of acylpeptide hydrolase as a sensitive site for reaction with organophosphorus compounds and a potential target for cognitive enhancing drugs. Mol Pharmacol. 2000 Sep;58(3):577-83.

Acylpeptide hydrolase was found to be potently inhibited by the organophosphorus compounds chlorpyrifosmethyl oxon, dichlorvos, and diisopropylfluorophosphate (20-min IC (50) values of 18.3 +/- 2.0, 118.7 +/- 9.7, and 22.5 +/- 1.2 nM, respectively).
199(2,3,3,9) Details
18049927 Pancetti F, Olmos C, Dagnino-Subiabre A, Rozas C, Morales B: Noncholinesterase effects induced by organophosphate pesticides and their relationship to cognitive processes: implication for the action of acylpeptide hydrolase. J Toxicol Environ Health B Crit Rev. 2007 Dec;10(8):623-30.

This enzyme is more sensitive than AChE to some organophosphates (OP), including dichlorvos, which is the parent compound for metrifonate, a therapeutic agent used in the treatment of cognitive impairment associated to Alzheimer's disease.
4(0,0,0,4) Details
15888665 Quistad GB, Klintenberg R, Casida JE: Blood acylpeptide hydrolase activity is a sensitive marker for exposure to some organophosphate toxicants. Toxicol Sci. 2005 Aug;86(2):291-9. Epub 2005 May 11.

The most potent in vitro inhibitors for human erythrocyte and mouse brain APH are DFP (IC (50) 11-17 nM), chlorpyrifos oxon (IC (50) 21-71 nM), dichlorvos (IC (50) 230-560 nM), naled (IC (50) 370-870 nM), and their analogs with modified alkyl substituents. (3) H-diisopropyl fluorophosphate is a potent inhibitor of mouse blood and brain APH in vivo (ED (50) 0.09-0.2 mg/kg and 0.02-0.03 mg/l for ip and vapor exposure, respectively).
2(0,0,0,2) Details