HomeThe Philippine Journal of Biochemistry and Molecular Biology (PJBMB)vol. 11 and 12 no. 1 (1993)

Cancer promoters and germ cell toxicity of dimethylnitrosamine. Effects of phenobarbital and saccharin.

Dalisay Chionglo Sy | Lumina Eugenio

Discipline: Biological and Sport Sciences

 

Abstract:

Studies in the past have shown the enhancing actions of phenobarbital and saccharin on somatic cell toxicity of dimethylnitrosamine. This paper deals with the effects of the two substances on the genotoxicity of DMN. Nine to 10 weeks old Strong A male mice were treated with DMN at zero time, followed by phenobarbital and saccharin after one hour. One week after treatment, animals were. mated with virgin females and subsequently impregnated mice were observed for dead implants and dominant lethals. Average total live embryo for animals treated with DMN and phenobarbital or saccharin did not show significant difference from controls. However, animals that received DMN and saccharin exhibited marked increase in percent dead implants compared to controls. Those that received DMN and phenobarbital showed appreciable increase in the percent dead implants only at the phenobarbital dose of 120 mg per kg Body Weight.



References:

  1. Sy, Dalisay Chionglo. 1989. Cancer promoters and their effect on the mutagenicity of mutacarcinogens. Environmental and Molecular Mutagenesis. vol. 14. Supplement 15. p. 568. Alan Liss, N.Y.
  2. Sy, Dalisay Chionglo and Clara Lim Sylianco. 1988. Effect of the cancer promoter saccharin on the mutagenicity of mitomycin C. Acta Manilana Vol. 37. p. 21-25.
  3. Sylianco, CYL and Sylianco-Wu, Lorraine. 1990. Modern Biochemistry, Aurum Technical Books, Quezon City, p. 57.