Protein Information

Name butyrylcholinesterase
Synonyms Acylcholine acylhydrolase; BCHE; BCHE protein; Butyrylcholine esterase; Butyrylcholinesterase; CHE1; Choline esterase II; Cholinesterase…

Compound Information

Name EPN
CAS

Reference List

PubMed Abstract RScore(About this table)
4299018 DuBois KP, Kinoshita FK, Frawley JP: Quantitative measurement of inhibition of aliesterases, acylamidase, and cholinesterase by EPN and Delnav. Toxicol Appl Pharmacol. 1968 Mar;12(2):273-84.
81(1,1,1,1) Details
4741776 Sato T, Moroi K: Comparative studies on the inhibition of liver amidases, aminopeptidase and serum cholinesterases by EPN. Toxicol Appl Pharmacol. 1973 Aug;25(4):553-9.
31(0,1,1,1) Details
14474998 MOELLER HC, RIDER JA: Plasma and red blood cell cholinesterase activity as indications of the threshold of incipient toxicity of ethyl-p-nitrophenyl thionobenzenephosphonate (EPN) and malathion in human beings. Toxicol Appl Pharmacol. 1962 Jan;4:123-30.
6(0,0,1,1) Details
5531408 Sato T, Yoshida S, Ogura Y, Moroi K: [Effect of ethyl-p-nitrophenyl phenylphosphonothiate (EPN) on tryptophan pyrrolase activity in relation to miosis and change in serum cholinesterase activities] Nippon Yakurigaku Zasshi. 1970 Jul 20;66(4):387-93.
6(0,0,1,1) Details
13114894 DISTEFANO V, HURWITZ L: The development of an anticholinesterase substance in highly purified EPN. Arch Biochem Biophys. 1953 Nov;47(1):228.
6(0,0,1,1) Details
3775801 Yasoshima M, Masuda Y: Effect of carbon disulfide on the anticholinesterase action of several organophosphorus insecticides in mice. Toxicol Lett. 1986 Sep;32(3):179-84.

4(0,0,0,4) Details
6525997 Awad OM: Molecular mechanism for the inhibition of acetylcholinesterase enzyme by organophosphorothionates. Enzyme. 1984;32(4):193-200.


The different mechanisms, whereby EPN and malathion inhibit the action of cholinesterase on acetylcholine, are described.
2(0,0,0,2) Details
2719724 Pla A, Johnson MK: Degradation by rat tissues in vitro of organophosphorus esters which inhibit cholinesterase. Biochem Pharmacol. 1989 May 1;38(9):1527-33.

2(0,0,0,2) Details
13059622 LEACH PH: Organic phosphorus poisoning in general practice; parathion, TEPP, HEPT, EPN and others. Calif Med. 1953 Jun;78(6):491-5.


The organic phosphorus radical has the specific effect of inactivating cholinesterase in the body.
2(0,0,0,2) Details
17335779 Schallreuter KU, Gibbons NC, Elwary SM, Parkin SM, Wood JM: Calcium-activated butyrylcholinesterase in human skin protects acetylcholinesterase against suicide inhibition by neurotoxic organophosphates. Biochem Biophys Res Commun. 2007 Apr 20;355(4):1069-74. Epub 2007 Feb 23.

Moreover, we confirmed the faster hydrolysis by calcium-activated BuchE using the neurotoxic organophosphate O-ethyl-O-(4-nitrophenyl)-phenylphosphonothioate (EPN).
2(0,0,0,2) Details
72768 El-Sebae AH, Soliman SA, Elamayem MA, Ahmed NS: Neurotoxicity of organophosphorus insecticides Leptophos and EPN. J Environ Sci Health B. 1977;12(4):269-87.


The five tested organophosphorus insecticides were compared for their ability to inhibit cholinesterase, neurotoxic esterases and monoamine oxidase.
2(0,0,0,2) Details
6169754 El-Sebae AH, Soliman SA, Ahmed NS, Curley A: Biochemical interaction of six OP delayed neurotoxicants with several neurotargets. J Environ Sci Health B. 1981;16(4):465-74.


The six compounds and their oxons were screened for their in-vitro inhibition to monamine oxidase (MAO), acetyl cholinesterase (AChE) and neurotoxic esterase (NTE) in the brain of either mouse, lamb or chicken.
1(0,0,0,1) Details
10421485 Satoh T, Suzuki S, Kawai N, Nakamura T, Hosokawa M: Toxicological significance in the cleavage of esterase-beta-glucuronidase complex in liver microsomes by organophosphorus compounds. Chem Biol Interact. 1999 May 14;119-120:471-8.


From these in vivo and in vitro data, it is concluded that increase of the plasma beta-G level after OP administration is much more sensitive biomarker than cholinesterase inhibition to acute intoxication of OPs and carbamates.
1(0,0,0,1) Details
6205472 Hoffman DJ, Sileo L, Murray HC: Subchronic organophosphorus ester-induced delayed neurotoxicity in mallards. Toxicol Appl Pharmacol. 1984 Aug;75(1):128-36.


Brain acetylcholinesterase, plasma cholinesterase, and plasma alkaline phosphatase were significantly inhibited as well.
1(0,0,0,1) Details
14496523 SALVINI M, TOMINZ L: [Experimental prevention of the anticholinesterase action of organophosphates. Med Lav. 1961 Nov;52:676-83.

Effect of pyridine-2-aldoxime sulfomethylate (RP-7676) per os, in chronic oral poisoning with EPN and malathion.]
1(0,0,0,1) Details
2339420 Silveira CL, Eldefrawi AT, Eldefrawi ME: Putative M2 muscarinic receptors of rat heart have high affinity for organophosphorus anticholinesterases. Toxicol Appl Pharmacol. 1990 May;103(3):474-81.


There was poor correlation between the potencies of the OPs in reversibly inhibiting [3H] CD binding, and their anticholinesterase activities and toxicities.
1(0,0,0,1) Details
6685263 Abou-Donia MB, Graham DG, Makkawy HA, Abdo KM: Effect of subchronic dermal application of O-ethyl O-4-nitrophenyl phenylphosphonothioate on producing delayed neurotoxicity in hens. Neurotoxicology. 1983 Summer;4(2):247-60.


EPN and TOCP treatments had a more profound effect on the activity of plasma butyrylcholinesterase than that of brain acetylcholinesterase (AchE). by contrast O,O,-diethyl O-4-nitrophenyl phosphorothioate (parathion) was more inhibitory to brain AChE.
1(0,0,0,1) Details