癌变·畸变·突变 ›› 2010, Vol. 22 ›› Issue (6): 469-472.doi: 10.3969/j.issn.1004-616x.2010.06.015

• 检测研究 • 上一篇    下一篇

阿司匹林对SD大鼠致畸作用最佳剂量的筛选

赵 敏,陈壁锋,谭剑斌,杨杏芬,黄俊明,周轶琳,陈瑞仪,黄建康   

  1. 广东省疾病预防控制中心毒理所,广东 广州 510300
  • 收稿日期:2010-06-28 修回日期:2010-07-16 出版日期:2010-11-30 发布日期:2010-11-30
  • 通讯作者: 赵 敏

Determining the optimal teratogenic dosage of aspirin in Sprague Dawley rats

ZHAO Min, CHEN Bi-feng, TAN Jian-bin, YANG Xing-fen, HUANG Jun-ming, ZHOU Yi-lin, CHEN Rui-yi, HUANG Jian-kang   

  1. Toxicology Institute, Centre for Disease Control and Prevention of Guangdong Province, Guangzhou 510300, Guangdong, China
  • Received:2010-06-28 Revised:2010-07-16 Online:2010-11-30 Published:2010-11-30
  • Contact: ZHAO Min

摘要: 目的: 筛选阿司匹林对SD大鼠致畸作用的最佳剂量。 方法: 将SD孕鼠随机分为阿司匹林不同剂量的实验组(260、270、280、300 mg/kg) 和阴性对照组。各剂量组均于孕鼠第7~16天灌胃给予阿司匹林。孕鼠分别于给受试物后第0、7、12、16、20天称量体质量,第20天处死。剖腹后观察活胎数、死胎数、吸收胎数、胎重,胎仔外观、骨骼和内脏发育情况。 结果: 270、280、300 mg/kg阿司匹林组SD大鼠表现出明显的致畸作用,胎仔外观、骨骼和内脏畸形率与阴性对照组比较显著增加(P<0.05),其中280、300 mg/kg剂量组还出现活胎数减少,吸收胎数和死胎数显著增加, 表现出明显的母体生殖毒性;而260 mg/kg阿司匹林组对SD大鼠的致畸作用不明显。 结论: 建议选择270 mg/kg剂量阿司匹林作为SD大鼠致畸试验阳性物的最佳剂量。

关键词: 阿司匹林, 致畸作用, 剂量筛选

Abstract: OBJECTIVE: The optimal teratogenic aspirin dosage for SD rats was determined. METHODS: Pregnant SD rats were randomly assigned to an aspirin dosage group(260, 270, 280, or 300 mg/kg aspirin) or to the negative control group. The indicators of teratogenicity examined included the following: the number of live fetuses, dead fetuses and reabsorbed fetuses, the appearance of the fetuses, and abnormalities in the development of the fetal skeletons and internal organs. RESULTS: Daily aspirin doses of 270, 280, or 300 mg/kg had substantial teratogenic effects on SD rats. The rates of abnormal development and malformations of the fetal skeletons and internal organs among the treated groups was dramatically elevated compared to the negative control group. However, the administration of a 260 mg/kg daily dose of aspirin did not induce appearance and internal organs malformations in rat fetuses. In addition, the study groups with doses of 280 and 300 mg/kg also produced maternal reproductive toxicity in the form of decreased number of live fetuses and a marked increase in the number of absorbed and dead fetuses. CONCLUSION: The optimal aspirin dosage for use as a teratogenic material in SD rats is 270 mg/kg.

Key words: aspirin, teratogenesis, dosage