title: Actions of amino-beta-carbolines on induction of sister-chromatid exchanges.
abstract: Synthetic 3-aminoharman and 3-aminonorharman (amino-beta-carbolines) caused slight but definite induction of sister-chromatid exchanges (SCEs) in human lymphoblastoid cells NL3 and Chinese hamster cells CHO-K1. These amino-beta-carbolines are ranked between 2-amino-alpha-carboline and 2-amino-6-methyl-9a-aza-delta-carboline (Glu-P-2) and much lower than 3-amino-gamma-carbolines (Trp-P-1 and 2) in inductive activity. 1-Amino-beta-carboline, harman and norharman had very weak, if any, SCE-inducer activity. Norharman had a synergistic effect with aromatic amines such as Trp-P-2 and aniline on SCE induction, while 3-aminoharman suppressed SCE induction by more potent inducers such as Trp-P-2 and benzo[a]pyrene.
mesh_terms: D000818:Animals; D002243:Carbolines / Q000494:pharmacology*; D002460:Cell Line; D006224:Cricetinae; D003412:Cricetulus; D003434:Crossing Over, Genetic / Q000187:drug effects*; D005260:Female; D006247:Harmine / Q000031:analogs & derivatives / Q000494:pharmacology; D007211:Indoles / Q000494:pharmacology*; D010053:Ovary; D012854:Sister Chromatid Exchange / Q000187:drug effects*; D013329:Structure-Activity Relationship
chemical_list: D002243:Carbolines; D007211:Indoles; D006247:Harmine; C005010:harman; C010262:norharman