Bogevik André S, Ytteborg Elisabeth, Madsen Alexander Klevedal, Jordal Ann-Elise Olderbakk, Karlsen Odd André, Rønnestad Ivar
Nofima, Muninbakken 9-13, Breivika, Tromsø 9019, Norway.
Nofima, Muninbakken 9-13, Breivika, Tromsø 9019, Norway.
Mar Pollut Bull. 2023 Feb;187:114528. doi: 10.1016/j.marpolbul.2022.114528. Epub 2023 Jan 4.
In the present study, polyethylene (PE) microplastics (150-300 μm) were added to Atlantic cod (Gadus morhua) feeds at 1 %, either in their present form (Virgin PE) or spiked with PCB-126 (Spiked PE). The feeds were given to juvenile cod for a 4-week period. The fish grew from 11 to 23 g with no significant difference between dietary treatments. Cod fed spiked PE showed a significantly higher concentration of PCB-126 in liver and muscle samples compared to control and fish ingesting virgin PE. In accordance with the accumulation of PCB-126 in the liver, the expression of hepatic cyp1a was higher in cod fed spiked PE. Notably, we observed that spiked PE, as well as virgin PE, have an effect on skin. Overall changes indicated a reduced skin barrier in fish fed a diet containing PE. Indicating that PE itself through interaction with gut tissue may influence skin health in fish.
在本研究中，将聚乙烯（PE）微塑料（150 - 300微米）以1%的比例添加到大西洋鳕鱼（ Gadus morhua）饲料中，微塑料呈原始形态（原始PE）或添加了多氯联苯-126（添加多氯联苯-126的PE）。这些饲料投喂给幼鳕鱼为期4周。鱼从11克长到23克，不同饮食处理组之间无显著差异。与对照组和摄入原始PE的鱼相比，投喂添加多氯联苯-126的PE的鳕鱼肝脏和肌肉样本中多氯联苯-126的浓度显著更高。与肝脏中多氯联苯-126的积累情况一致，投喂添加多氯联苯-126的PE的鳕鱼肝脏中cyp1a的表达更高。值得注意的是，我们观察到添加多氯联苯-126的PE以及原始PE对皮肤都有影响。总体变化表明，喂食含PE饲料的鱼皮肤屏障功能降低。这表明PE本身通过与肠道组织相互作用可能会影响鱼的皮肤健康。
