TY - JOUR
T1 - N-substituted cyclopropylamines as inhibitors of MAO-A and -B forms
AU - Murphy, Dennis L.
AU - Donnelly, Cynthia H.
AU - Richelson, Elliott
AU - Fuller, Ray W.
PY - 1978
Y1 - 1978
N2 - Monoamine oxidase (MAO) activity in mouse neuroblastoma homogenates was preferentially inhibited by N[2-(o-chlorophenoxy)-ethyl]cyclopropylamine (L-51641) and a series of structurally related compounds. Two other congeners (L-54761 and L-54748) from this series, however, demonstrated preferential inhibition of MAO in human platelet homogenates. As neuroblastoma and human platelet cells have been identified as possessing apparently exclusive MAO-A and MAO-B characteristics, respectively, L-54761 and L-54748 appear to be preferential MAO-B inhibitors. In keeping with this conclusion, a greater proportional inhibition of phenylethylamine oxidation than serotonin oxidation by these two compounds was found in rat brain homogenates, while contrasting results were obtained with L-51641. Preferential effects of L-54761 and L-51641 on phenylethylamine oxidation and, to a lesser extent, on serotonin oxidation were also observed in vivo.
AB - Monoamine oxidase (MAO) activity in mouse neuroblastoma homogenates was preferentially inhibited by N[2-(o-chlorophenoxy)-ethyl]cyclopropylamine (L-51641) and a series of structurally related compounds. Two other congeners (L-54761 and L-54748) from this series, however, demonstrated preferential inhibition of MAO in human platelet homogenates. As neuroblastoma and human platelet cells have been identified as possessing apparently exclusive MAO-A and MAO-B characteristics, respectively, L-54761 and L-54748 appear to be preferential MAO-B inhibitors. In keeping with this conclusion, a greater proportional inhibition of phenylethylamine oxidation than serotonin oxidation by these two compounds was found in rat brain homogenates, while contrasting results were obtained with L-51641. Preferential effects of L-54761 and L-51641 on phenylethylamine oxidation and, to a lesser extent, on serotonin oxidation were also observed in vivo.
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U2 - 10.1016/0006-2952(78)90554-3
DO - 10.1016/0006-2952(78)90554-3
M3 - Article
C2 - 708457
AN - SCOPUS:0018086003
SN - 0006-2952
VL - 27
SP - 1767
EP - 1769
JO - Biochemical Pharmacology
JF - Biochemical Pharmacology
IS - 13
ER -