南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (6): 774–779.

• • 上一篇    下一篇

 腐植酸对芘的生物毒性效应的影响*

 蒋丽娟1,尹颖1**,尹大强2,郭红岩1,杨柳燕1,王晓蓉1
  

  • 出版日期:2015-07-29 发布日期:2015-07-29
  • 作者简介: (1.污染控制与资源化研究国家重点实验室,南京大学环境学院,南京,210046;
    2.长江水环境教育部重点实验室,同济大学环境科学与工程学院,上海,200092)
  • 基金资助:
     黄河流域公益性项日(201001010),国家自然科学基金(20907020)

 The influence of humic acid on pyrene biotoxicity in
liver of Carassius auratus

 Jiang Li-Juan1,Yin Ying1,Yin Da-Qiang2,Guo Hong-Yan1,Yang Liu-Yan1,Wand Xiao-Rong1
  

  • Online:2015-07-29 Published:2015-07-29
  • About author: (1 .State Key Laboratory of Pollution Control and Resources Reuse,Academy of Environment,
    Nanjing University,Nanjing,210046,China;
    2. Laboratory of Yangtze River Water Environment,Ministry of Education, School of Environmental Science
    and Engineering,Tongji University,Shanghai,200092,China)

摘要:  本文旨在研究水体中腐植酸(humic acid, HA)对芘胁迫下鲫鱼肝脏中富集花,活性氧的诱导及氧化损伤的影响.通过静态模拟实验,在水体中不同浓度(0,0. 05,0. 1,0. 5, 1. 0和2. 5 mg/I.)的HA与芘(0.05 mg/I.)共同暴露10天后,取鲫鱼肝脏,分析其中芘的富集量、活性氧自由基的诱导信号、脂质过氧化产物丙二醛(MDA)含量以及抗氧化系统发生的变化.结果发现,随着HA浓度的增加,花在鲫鱼月+脏中的富集降低;0. 06mg/L和0. 1 mg/L的HA显著诱导鲫鱼肝脏产生活性氧自由基,但随着HA浓
度升高,这种诱导效应降低;0. 6 mg/Z,和1. 0 mg/L H A可以使肝脏中MDA含量显著降低;三种抗氧化系统酶超氧化物歧化酶,过氧化氢酶,谷肤甘肤一分转移酶活性及谷肤甘肤含量因HA的加入均显示先升高后降低的趋势.本文认为,HA降低芘在螂角肝脏中的富集,并改变芘对鲫鱼的生物效应,减轻芘对鲫鱼产生的氧化损伤.

Abstract:  In the current study,whether the different concentrations of humic acid(HA)may influence bioaccumula- tion and oxidative stress of pyrene in liver of Curussius uurutus was investigated.The fish(C. uurutus)was exposed to HA(0,0.05,0. 1 , 0. 5,1.0 and 2. 5 mg/L)and pyrene(0. 05 mg/L)mixturcs for 10 days.Then the pyrene bioaccumu- lation as well as their effects on the reactive oxygen species,Malondialdchyde(MDA)contcnt and antioxidativc sys- tem in the liver of C.uurutus were analyzed. With the HA concentration increase, bioaccumulation of pyrene in liver of C.uurutus reduced. In the mcantime,0. 05 mg/Land 0. 1 mg/L HA could induce the production of reactive oxygen species in the liver of C.uurutus,0. 5 mg/L and 1. 0 mg/L HA could decrease the MDA contents.The superoxide dismutasc, catalasc,glutathionrs-transferase activities and glutathione contents decreased after an initial increase,under HA concentration increase. It was pyrene stress which caused the oxidative damage of the liver and brain, which could be further induced by HA. Overall,our present work illustrated that the presence of HA could reduce pyrene concentration in fish liver and change the pyrene’s biological effects,which should not be disregarded when
considering the ecological safety of pyrene in the aquatic system.

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