›› 2016, Vol. 43 ›› Issue (10): 2724-2729.doi: 10.16431/j.cnki.1671-7236.2016.10.031

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Study on Acute Toxicity Test of Anticoccidial Oral Liquid from Dichroa febrifuga in Mice

WANG Ling1, GUO Zhi-ting1, ZAHNG Xiao-song2, LIN Chun-quan3, LUO Xiao-qin4, YANG Feng1, YANG Zhen1   

  1. 1. Key Laboratory of New Animal Drug Project, Gansu Province, Key Laboratory of Veterinary Pharmaceutics Discovery, Ministry of Agriculture, Lanzhou Institute of Animal Science and Veterinary Pharmaceutics, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China;
    2. College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China;
    3. School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
    4. Lanzhou Institute of Animal Health Supervision, Lanzhou 730050, China
  • Received:2016-04-06 Online:2016-10-20 Published:2016-10-28

Abstract:

The purpose of this study was to evaluate drug safety of Dichroa febrifuga oral liquid (DFOL),and the acute toxicity test of DFOL was established in mice based on modified Karber's method and dose increasing method,and histopathological examination had been applied to explore the main target organs of its toxic injury.The dosage was determined by preliminary experiment,a total of 60 Kunming mice were selected and divided randomly into one control group and five experimental groups,DFOL was administered by intragastric gavage at five different doses (1.00,1.40,1.96,2.74,3.84 g/(kg·BW)),and observed for 7 days continuously,the LD50 value and 95% confidence interval of LD50 were determined by the modified Karbers method.It showed that LD50 was 2.0961 g/(kg·BW) and its 95% confidence interval was 1.7414 to 2.5429 g/(kg·BW).The liver and kidney of some mice in 1.96,2.74 and 3.84 g/(kg·BW) drug groups appeared severe edema,congestion and white necrotic foci by necropsy.Acute liver injury was found in mice by histopathological examination and the liver cell showed degenerative change,kidney damage showed renal congestion,interstitial edema,renal tubule epithelial cloudy swelling and degeneration.The liver was damaged seriously in the main organ and the main toxic organ of DFOL was liver.The test showed that the toxicity of DFOL was lower and it had high security in a conventional doses for clinical anti-coccidiosis application,however,high dose,long course of medication had toxicity,and the toxicity of DFOL should be analyzed and evaluated combining with long-term toxicity tests and many other inspection results.

Key words: Dichroa febrifuga oral liquid (DFOL); acute toxicity; tissue pathology; target organ

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