title: Modulatory effects of a tannin fraction isolated from Terminalia arjuna on the genotoxicity of mutagens in Salmonella typhimurium.
abstract: A fraction isolated from Terminalia arjuna was studied for its antimutagenic effect against 4-nitro-o-phenylenediamine (NPD) in TA98, sodium azide in TA100 and 2-aminofluorene (2AF, S9-dependent), a promutagen, in both TA98 and TA 100 tester strains of Salmonella typhimurium using the Ames assay. The fraction inhibited the mutagenicity of 2AF very significantly in both strains while the revertant colonies induced by NPD and sodium azide were reduced moderately. 1H-NMR, 13C-NMR, IR and UV-spectroscopic data of the fraction revealed it to be tannin in nature.
authors.affiliation: Department of Botanical Sciences, Guru Nanak Dev University, 143 005, Amritsar, India. sjkaur@rediffmail.com
authors.forename: S J
authors.initials: SJ
authors.lastname: Kaur
authors.forename: I S
authors.initials: IS
authors.lastname: Grover
authors.forename: S
authors.initials: S
authors.lastname: Kumar
mesh_terms: D016587:Antimutagenic Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D002855:Chromatography, Thin Layer; D005449:Fluorenes / Q000633:toxicity; D009682:Magnetic Resonance Spectroscopy; D008515:Medicine, Ayurvedic; D009152:Mutagenicity Tests; D009153:Mutagens / Q000633:toxicity*; D009154:Mutation; D010655:Phenylenediamines / Q000633:toxicity; D008517:Phytotherapy; D010946:Plants, Medicinal / Q000737:chemistry*; D019685:Rosales / Q000737:chemistry*; D012486:Salmonella typhimurium / Q000737:chemistry / Q000187:drug effects / Q000235:genetics; D019810:Sodium Azide / Q000633:toxicity; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013634:Tannins / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D016587:Antimutagenic Agents; D005449:Fluorenes; D009153:Mutagens; D010655:Phenylenediamines; D013634:Tannins; C012177:2-aminofluorene; C012277:1,2-diamino-4-nitrobenzene; D019810:Sodium Azide