›› 2007, Vol. 27 ›› Issue (2): 123-126.

• 论文 • 上一篇    下一篇

DDTs对唐鱼仔鱼的急性毒性及安全浓度评价

  

  1. 华南师范大学生命科学学院,广州 510631
  • 收稿日期:2006-10-08 出版日期:2007-02-28 发布日期:2007-02-28
  • 基金资助:
    农业部渔业生态环境重点开放实验室开放基金和广东省渔业生态环境重点开放实验室开放基金资助(2005-09);广东省科技计划项目资助(2006B36601008)

Acute Toxicity and Safety Assessment of DDTs to White Cloud Mountain Minnow Tanichthys albonubes larval stages

  1. 1. Department of Laboratory Animal science, FuDan University, Shanghai 200032, China;2 Shanghai Laboratory Animal Center, The Chinese Academy of Sciences, Shanghai 201615, China;3. Department of Surgery, Hua Dong Hospital, Shanghai 200040, China
  • Received:2006-10-08 Online:2007-02-28 Published:2007-02-28

摘要: 目的 研究有机氟农药滴滴涕(dichlorodiphenyltrichloroethanes,DDTs)对唐鱼的急性毒性,评价水环境中DDTs对鱼类的影响,为渔业部门制定水质标准提供参考.方法 使用浸浴法以0.0125、0.025、0.045、0.08和0.14mg/L五个DDTs浓度为唐鱼染毒,计算其对仔鱼的急性毒性及安全浓度.结果 DDTs对唐鱼仔鱼为剧毒物质,24、48 h的LC50分别为0.243、0.049 mg/L,其安全质量浓度为0.040 mg/L.结论 唐鱼对DDTs敏感,可以作为一种较理想的环境污染指示生物.

关键词: 滴滴涕, 唐鱼, 急性毒性, 安全浓度

Abstract: Objective To study the therapeutic effect of combining angiostatin gene therapy with peritoneal chemotherapy with 5-FU on cachexia in nude mice bearing with colorectal carcinoma metastasis in abdominal cavity. Methods Angiostatin gene was cloned into adenovirus with method of RT-PCR. LoVo cell suspension was i.p to 40 nude mice. The mice were treated with combining angiostatin gene therapy and 5-FU peritoneal chemotherapy or others. Observation were made on the improvement of physiological conditions of the cachetic nude mice after treatment, and the serum levels of TNF-a and IL-1 were assayed by ELISA method. Result Compared with the controlled groups, the group of combining therapy was less loss of body mass, higher food intake, better mental condition and lower levels of TNF-a and IL-1. Conclusion Combining angiostatin gene therapy and 5-FU peritoneal chemotherapy has beneficial effect on cachexia in nude mice bearing with colorectal carcinoma in abdominal cavity.

Key words: Angiostatin, Colorectal Carcinoma, 5-FU, Gene Therapy, Cachexia