title: [Comparative study on acute toxicity of four extracts from Xanthii Fructus in mice].
abstract: OBJECTIVE
  To comparative study the acute toxicity of four extracts from Xanthii Fructus in mice.
  
  
  METHODS
  Observed the toxic manifestations in mice which were given the four extracts by intragastric administration and calculated the LD50 of the four extracts from Xanthii Fructus.
  
  
  RESULTS
  The toxic manifestations of the mice given water extract by intragastric administration were repose, pilo-erection, cyanosis, intention tremor, respiratory inhibition, loss of righting reflex and convulsion . The toxic manifestations of the mice given ethanol extract by intragastric administration were repose, abdominal respiration, intention tremor, intermittent convulsions, incontinence. The LD50 of Xanthii Fructus processed water extract, processed ethanol extract, crude water extract, crude ethanol extract were material drug 155.93, 317.80, 167.6, 275.41 g x kg(-1), respectively.
  
  
  CONCLUSIONS
  The acute toxicity of water extract is distinctly stronger than that of ethanol extract, but there is no marked distinguish between crude and processed extract.
authors.affiliation: Institute of Pharmacology and Toxicology, Key Laboratory of Biological Evaluation of Traditional Chinese Medicine Quality of the Administration of Traditional Chinese Medicine, Sichuan Provincial Key Laboratory of the Quality and Innovation Research of Chinese Materia Medica, Sichuan Provincial Engineering Technology Research Center of System Development of Famous-region Drug, Sichuan Academy of Chinese Medicine Sciences, Chengdu 610041, China. yanlc9722@163.com
authors.forename: Liangchun
authors.initials: L
authors.lastname: Yan
authors.forename: Tingting
authors.initials: T
authors.lastname: Zhang
authors.forename: Junning
authors.initials: J
authors.lastname: Zhao
authors.forename: Jun
authors.initials: J
authors.lastname: Song
authors.forename: Hua
authors.initials: H
authors.lastname: Hua
authors.forename: Li
authors.initials: L
authors.lastname: Li
mesh_terms: D000818:Animals; D002626:Chemistry, Pharmaceutical / Q000379:methods*; D004365:Drugs, Chinese Herbal / Q000008:administration & dosage / Q000302:isolation & purification* / Q000633:toxicity*; D005260:Female; D005638:Fruit / Q000737:chemistry*; D007928:Lethal Dose 50; D008297:Male; D051379:Mice; D057897:Reflex, Righting / Q000187:drug effects; D012119:Respiration / Q000187:drug effects; D031210:Xanthium / Q000737:chemistry*
chemical_list: D004365:Drugs, Chinese Herbal