臭氧对草鱼鱼种血液MDA GSH 浓度以及GPX 活性的影响

在实验室条件下，用质量浓度为0．118和0．278mg／L的臭氧处理草鱼鱼种，研究臭氧对草鱼血液中丙二醛(ＭDA)、谷胱甘肽(GSH)浓度和谷胱甘肽过氧化物酶(GPX)活性的影响．实验结果表明：MDA浓度在两种质量浓度中暴露30min后显著升高．GSH浓度在0．118mg/L暴露90min后显著降低，在0．278mg／L暴露30min后显著降低．GPX活性在0．118mg／L暴露30min显著升高，并在90min的实验时间内维持在一恒定水平；在O．278mg/L暴露30min其活性显著升高，但之后便呈现下降趋势，并在第90min时显著低于对照组．

EFFECTS OF OZONE ON GPX ACTIVITY AND CONTENT OF GSH AND MDA IN BLOOD OF GRASS CARP (Ctenopharygodon idellus) FINGERLING

The effects of ozone on the activity of GPX and the content of GSH and MDA were studied by using the blood of 1-year-old grass carp (Ctenopharygodon idellus) fingerling exposed to the ozone concentration of 0.118 mg/L and 0.278 mg/L in fresh water for 30 min, 60 min and 90 min respectively. At the concentration of 0.118 mg/L and 0.278 mg/L, the content of MDA was significantly elevated after 30 min. The content of GSH in blood was significantly decreased after 90 min exposure of 0.118 mg/L ozone and after 30min of 0.278 mg/L. The activity of GPX was elevated significantly at the concentration of 0.118 mg/L after 30min and then kept at a invariable level until 90 min, but at 0.278 mg/L, it was elevated significantly after 30 min and then decreased which is significantly after 90 min.