PMID- 461984 OWN - NLM STAT- MEDLINE DCOM- 19790917 LR - 20141120 IS - 0034-5164 (Print) IS - 0034-5164 (Linking) VI - 24 IP - 2 DP - 1979 May TI - The effect of harmine and other monoamine oxidase inhibitors on N-acetyltransferase activity. PG - 259-72 AB - Prior studies indicate that the monoamine oxidase inhibitors (MAOI) harmine and iproniazide inhibit N-acetyltransferase activity from liver. In this report we have demonstrated that harmine and harmaline are potent inhibitors of N-acetyltransferase, purified from hamster and rat liver. However, other MAOI such as deprenyl, clorgyline, methysergide, cyproheptadine, phenelzine, pargyline, methyltryptamine and tranylcypromine have either no effect, or only trivial effects on N-acetyltransferase. There is no correlation between a compound's properties as an MAO and N-acetyltransferase inhibitor. One must consider the inhibitory effect of harmine and harmaline on both MAO and N-acetyltransferase when evaluating the effects of these compounds on physiological processes. FAU - Wright, E E AU - Wright EE FAU - Bird, J L AU - Bird JL FAU - Feldman, J M AU - Feldman JM LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Res Commun Chem Pathol Pharmacol JT - Research communications in chemical pathology and pharmacology JID - 0244734 RN - 0 (Alkaloids) RN - 0 (Monoamine Oxidase Inhibitors) RN - 4FHH5G48T7 (Harmine) RN - EC 2.3.1.- (Acetyltransferases) SB - IM MH - Acetyltransferases/*metabolism MH - Alkaloids/*pharmacology MH - Animals MH - Cricetinae MH - Harmine/*pharmacology MH - In Vitro Techniques MH - Liver/drug effects/*enzymology MH - Mesocricetus MH - Mitochondria, Liver/drug effects/enzymology MH - Monoamine Oxidase Inhibitors/*pharmacology MH - Rats EDAT- 1979/05/01 00:00 MHDA- 1979/05/01 00:01 CRDT- 1979/05/01 00:00 PHST- 1979/05/01 00:00 [pubmed] PHST- 1979/05/01 00:01 [medline] PHST- 1979/05/01 00:00 [entrez] PST - ppublish SO - Res Commun Chem Pathol Pharmacol. 1979 May;24(2):259-72.