title: ["Dose-time-toxicity" relationship study on hepatotoxicity caused by multiple dose water extraction components of Evodiae Fructus to mice].
abstract: OBJECTIVE
  To study on the time-toxicity and dose-toxicity relationships caused by multiple dose water extraction components of Evodia Fructus to mice.
  
  
  METHODS
  Mice were grouped according to different time or dose points, to observe the death condition and toxicity of mice. The changes of the activity of ALT, AST and liver, kidney index were detected, and the morphological changes of liver tissue were observed under light microscope.
  
  
  RESULTS
  On the first day after administration the hepatotoxicity which displayed with obvious increase of ALT, AST activity in serum and liver tissue and hepatic injury appeared. On the third day the hepatotoxicity kept a higher level that the active units in serum ALT, AST were significantly higher than the normal group. On the 7th day after administration ALT, AST level in serum are restored near normality. Compared with the normal group, within 7 days after the administration, water extracted components in 0.63-5.0 g x kg(-1) dose scope could cause significant damage to liver, the activity of ALT, AST, AKP, TBI elevated, while ALB reduced, and liver ratio increased, and under light microscope, the different doses' liver tissue of mice all had different degree's edema, fatty degeneration in liver cells and interstitial congestion. There were certain time-toxicity and dose-toxicity relationships. The above-mentioned change gradually aggravated with dose increasing, and it was the obvious discrepancy compared with distilled water control group.
  
  
  CONCLUSIONS
  Multiple intragastric administrations of water extracted components of Evodia Fructus with certain dosage may induce acute hepatotoxical injury in mice and show certain "dosage-time-toxicity" relationship.
authors.affiliation: Shandong Research Academy of Traditional Chinese Medicine, Ji'nan 250014, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.forename: Xiaojiaoyang
authors.initials: X
authors.lastname: Li
authors.forename: Rong
authors.initials: R
authors.lastname: Sun
mesh_terms: D000410:Alanine Transaminase / Q000097:blood / Q000378:metabolism; D000818:Animals; D001219:Aspartate Aminotransferases / Q000097:blood / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000378:metabolism / Q000633:toxicity*; D032086:Evodia / Q000737:chemistry*; D005260:Female; D005638:Fruit / Q000737:chemistry*; D007668:Kidney / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism; D008099:Liver / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism / Q000473:pathology; D008297:Male; D051379:Mice
chemical_list: D004365:Drugs, Chinese Herbal; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase