北京汽车 司法拍卖:生物学专业翻译

来源:百度文库 编辑:高考问答 时间:2024/05/09 17:44:18
有机农药及环境激素包括具有雌激素活性的物质,进入蝌蚪体内到排出体外各相关器官特别是对两栖类与外界接触的器官及和解毒相关器官的损伤特别明显,因此研究雌性激素与有机农药在对两栖类的氧化损伤作用中是何种关系,是加和,协同还是拮抗则显得非常有必要。本研究以地处兰州东面距离兰州约50KM,污染较小的榆中夏官营地区所采材料为对象对比在不同投毒条件之下中华大蟾蜍蝌蚪抗氧化酶系统SOD、GPx及脂质过氧化指标MDA的含量,发现当加入农药后蝌蚪肝脏中SOD活性和MDA的量明显升高,GPx活性明显下降。而当农药(DDV)剂量不变而随着雌性激素剂量的加大的过程中,肝脏中SOD活性和MDA的量先降后升,GPx活性则先升后降。在整个过程中有机农药和雌性激素均表现为拮抗作用。

Organic pesticides and environmental hormones with oestrogenic including reactive substances into the body to emit brother vitro relevant organs especially amphibians contact with the outside world and detoxification organs and organ damage related particularly evident, and therefore the study female hormones and organic pesticides on amphibians in the oxidation damage is what role, and is plus, with or antagonists were looked very necessary. The study is to the east of Lanzhou Lanzhou about 50KM distance pollution Yuzhong Xiaguan battalion smaller areas targeted contrast material taken off in different conditions inside China Great Seal body rid system ZnSOD, GPx and skin Guo oxide indicators MDA content, When pesticides were found after joining brother, ZnSOD reactive liver volume and the apparent rise MDA, GPx reactive markedly. When pesticides (DDV) and the same dose as the dose increased female hormones process liver, ZnSOD reactive and MDA in first landing or after, the first rose and then dropped GPx reactive. Throughout the process of organic pesticides and female hormones are manifested as antagonists.