Antimutagenic Activities of 24 Synthetic Flavones with The Salmonella Microsomal Assay

  • Laget, M. (Laboratoire de Biogenotoxicologie et Mutagenese Environnementale (EA 1784), Faculte de Pharmacie) ;
  • De Meo, M. (Laboratoire de Biogenotoxicologie et Mutagenese Environnementale (EA 1784), Faculte de Pharmacie) ;
  • Wallet, J.C. (Laboratoire de Phytochimie, Faculte des Sciences et Techniques de Sciences et Techniques de Saint-Jerome) ;
  • Gaydou, E.M. (Laboratoire de Phytochimie, Faculte des Sciences et Techniques de Sciences et Techniques de Saint-Jerome) ;
  • Guiraud, H. (Laboratoire de Biogenotoxicologie et Mutagenese Environnementale (EA 1784), Faculte de Pharmacie) ;
  • Dumenil, G. (Laboratoire de Biogenotoxicologie et Mutagenese Environnementale (EA 1784), Faculte de Pharmacie)
  • Published : 1995.12.01

Abstract

Twenty-four flavones were synthesized with various hydroxyl and/or methoxyl groups on A and B rings. Their antimutagenic properties were evaluated against ben:w(a)pyrene (BaP) and a pool of mutagenic urine concentrate (U) using a modified liquid incubation method of Ames test. The tester strain was Salmonella typhimurium TA98+S9 Mix. The antimutagenic activities were calculated by non linear regression analysis and the doses of flavones (in nmoles) required for a 50% reduction of induced revertants with BaP and U were defined as the inhibition doses (TEX>$ID_{508}{\;}and{\;}ID_{508}$ respectively). Seventeen flavones possessed significant antimutagenic activity against BaP. $ID_{508}$ ranged from 15.1 nmoles (F22) to 1000.6 nmoles (F13). Eighteen f1avones showed significant antimutagenic activity against U. $ID_{50U}$ ranged from 23.5 nmoles (F22) to 354.6 nmoles (F3). The 2',3',4'-trihydroxyflavone (F22, $ID_{508}=15.1$ nmoles, $ID_{50U}=23.5$ nmoles) and the 2',3',4',7-tetrahydroxyflavone (F20, $ID_{508}=37.8$ nmoles; $ID_{50U}=62.3$ nmoles) had antimutagenic activities similar to those of chlorophyllin ($ID_{508}=19.6$ nmoles and $ID_{50U}=44.2$ nmoles) and were evaluated against B(alP 7,8-dihydrodiol-9,10-epoxide. Against this last mutagen, the flavones which included three OH in B ring showed the highest activity and this property seemed independent of the substituent groups on A ring.

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