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首页> 外文期刊>RSC Advances >Effect of humic acid on prometryn bioaccumulation and the induction of oxidative stress in zebrafish (Danio rerio)
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Effect of humic acid on prometryn bioaccumulation and the induction of oxidative stress in zebrafish (Danio rerio)

机译：植物酸对斑马鱼（Danio Rerio）的Prometryn生物累积和氧化应激诱导的影响

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摘要

Humic acid (HA) is the main component of dissolved organic matter in aquatic ecosystems and affects the bioavailability of contaminants. Prometryn is frequently used to control annual broadleaf and grass weeds and has been widely detected in the aquatic environment. An experiment was conducted to investigate the effect of HA on the chronic toxicity of prometryn in zebrafish. In zebrafish treated with 53.2 mu g L-1 prometryn (P), prometryn with 5 mg L-1 HA (P + HA(5)), or prometryn with 15 mg L-1 HA (P + HA(15)), catalase (CAT) activity and glutathione (GSH) content in the visceral mass initially increased and then decreased with exposure time. After one day of exposure, malondialdehyde in the visceral mass increased by 58% to 64% in fish treated with prometryn and HA compared to those treated with prometryn alone, however, this difference disappeared during days 10 to 40. Treatment with HA enhanced the bioaccumulation of prometryn by 34% and 40% on day 1 in the P + HA(5) and P + HA(15) groups, respectively, possibly due to changes in gill membrane permeability. Nevertheless, the opposite result was observed during days 10 to 40, owing to the presence of more excreta and suspended particulate matter resulting in a reduction in the quantity of free dissolved prometryn in the P + HA(5) and P + HA(15) groups. There were significant correlations between CAT activity and prometryn concentration (0.562**, P < 0.01) and between GSH and prometryn concentration (0.808**, P < 0.01) throughout the first 20 days of the experiment, suggesting a role for these antioxidant systems in the detoxification of prometryn in zebrafish.
机译：腐殖酸（HA）是水生生态系统中溶解有机物的主要成分，并影响污染物的生物利用度。 Prometryn经常用于控制年度阔叶和草杂草，并在水生环境中被广泛检测到。进行了一个实验，探讨了HA对斑马鱼中Prometryn慢性毒性的影响。在斑马鱼中用53.2μgl-1 prometryn（p），prometryn，5 mg l-1 ha（p + ha（5）），或prometryn，15 mg l-1 ha（p + ha（15）），过氧化氢酶（猫）活性和谷胱甘肽（GSH）含量最初增加，然后通过暴露时间降低。在一天之后，与Prometryn和Ha相比，丙炔醛在内脏质量上增加58％至64％，与单独使用Prometryn处理的那些，然而，这种差异在第10至40天期间消失。用HA的治疗增强了生物累积Prometryn分别在P + Ha（5）和P + HA（15）组中的第1天达到34％和40％，可能是由于鳃膜渗透性的变化。然而，由于存在更多的排泄和悬浮颗粒物，在第10天至40期间观察到相反的结果，导致P + Ha（5）和p + ha（15）中的游离溶解的prometryn的量减少团体。猫活性和Prometryn浓度之间存在显着的相关性（0.562 **，p <0.01），在实验的前20天内，GSH和Prometryn浓度（0.808 **，P <0.01）之间，表明这些抗氧化系统的作用在斑马鱼的Prometryn的解毒中。

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  • 来源
    《RSC Advances》 |2016年第20期|共8页
  • 作者

    Zhao Qian; Zhu Lin;

  • 作者单位

    Nankai Univ MOE Key Lab Pollut Proc &

    Environm Criteria Tianjin Key Lab Environm Remediat &

    Pollut Contro Coll Environm Sci &

    Engn 94 Weijin Rd Tianjin 300071 Peoples R China;

    Nankai Univ MOE Key Lab Pollut Proc &

    Environm Criteria Tianjin Key Lab Environm Remediat &

    Pollut Contro Coll Environm Sci &

    Engn 94 Weijin Rd Tianjin 300071 Peoples R China;

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