China Animal Husbandry and Veterinary Medicine ›› 2019, Vol. 46 ›› Issue (9): 2795-2802.doi: 10.16431/j.cnki.1671-7236.2019.09.036

• Basic Veterinary Medicine • Previous Articles     Next Articles

Study on the Stability of Rifaximin Uterine Infection and Its Stimulation to Vaginal Mucosa in Rabbits

XU Fei, LIU Jing, HUANG Huili, CHEN Xiaojie, LI Xiubo   

  1. National Feed Drug Standard Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2019-04-10 Online:2019-09-20 Published:2019-09-21

Abstract: In order to study the stability of the rifaximin uterine injection,and initially determined its quality guarantee period,three batches of rifaximin were used to test the stability of uterine injectors,including the influencing factors test,the high temperature accelerated test and long term stability test,the content of rifaximin and its related substances were determined by high performance liquid chromatography (HPLC).Thus,the quality guarantee period of rifaximin uterine injection was preliminarily determined.Referring to the relevant technical specifications,rabbit vaginal mucous membrane irritation test was studied.The results showed that the contents of the related substances were not more than 3% according to the area normalization method,the properties,sedimentation and particle size of the injector did not change significantly,and the change of the content of rifaximin in the principal component was 90.0% to 110.0%,the validity of this product was determined to be two years.In rabbit vaginal mucous membrane irritation test,the results showed that erythema and edema were not been found on rifaximin uterus implants administration site skin and saline control site skin,and the score was 0 point.In the vaginal mucous membrane irritation test,leukocyte infiltration,hyperemia and edema were not found in vaginal mucosa of test and control groups,vaginal mucous membrane irritation index was 0.25.So,rifaximin uterus injection had no irritation on rabbit vaginal mucous membrane.This product had good clinical safety and could be further promoted and used.

Key words: uterine injection of rifaximin; stability test; rabbit; vaginal mucous membrane irritation

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