THE EFFECTS OF URTICA DIOICA L. LEAF EXTRACT ON ANILINE 4-HYDROXYLASE IN MICE


Özen T., Korkmaz H.

ACTA POLONIAE PHARMACEUTICA, vol.66, no.3, pp.305-309, 2009 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 66 Issue: 3
  • Publication Date: 2009
  • Journal Name: ACTA POLONIAE PHARMACEUTICA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.305-309
  • Keywords: Urtica dioica L., aniline 4-hydroxylase, cofactor, metal ions, XENOBIOTIC-METABOLIZING ENZYMES, SEABREAM SPARUS-AURATA, LIPID-PEROXIDATION, IN-VIVO, LIVER, CYTOCHROME-P450, SYSTEM
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

The effects of hydroalcoholic (80 % ethanol-20 % water) extract of Urtica dioica L. on microsomal aniline 4-hydroxylase (A4H) were investigated in the liver of Swiss albino mice (8-10 weeks old) treated with two doses (50 and 100 mg/kg body weight, given orally for 14 days). The activities of A4H showed a significant increase in the liver at both dose levels of extract treatment. The hydroalcoholic extract of Urtica dioica induced the activities of A4H that had been increased by treatment of metal ions (Mg2+ and Ca2+) and the mixture of cofactors (NADH and NADPH). At saturated concentration of cofactor, microsomal A4H exhibited significantly even higher activities in the presence of the mixture of cofactors than NADPH and NADH. Mg2+ and Ca2+ ions acted as stimulants in vitro. The present results suggest that the hydroalcoholic extract of Urtica dioica may have modalatory effect on aniline hydroxylase at least in part and enhance the activity of A4H adding metals ions and cofactors.