在Schizopygopsis younghusbandi幼虫中,铜诱导的甲状腺干扰和氧化应激
Liqiao Zhong1, Chi Zhang2, Fei Liu2
1National Agricultural Science Observing and Experimental Station of Chongqing, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China.
Antioxidants (Basel, Switzerland)
|January 28, 2026
概括
接触铜会损害拉萨河鱼类,破坏甲状腺和抗氧化剂系统. 这项研究表明,铜 (Cu2+) 对鱼类的发育和生存产生负面影响.
科学领域:
- 环境毒理学环境毒理学
- 水生生态毒理学 水生生态毒理学
- 鱼类生物学 鱼类生物学
背景情况:
- 重金属排放,特别是铜 (Cu2+),正在拉萨上升,影响当地水生环境.
- 铜对水生生物有毒,但它对拉萨河本土鱼类的影响尚不清楚.
研究的目的:
- 为了研究Cu2+对甲状腺功能和抗氧化系统的毒性影响,Schizopygopsis younghusbandi (S. 年轻的husbandi) 幼虫.
- 评估Cu2+暴露对S.的生存和发育的影响. 年轻的丈夫开始.
主要方法:
- 在S.I.S. 年轻的husbandi幼虫被暴露在不同的Cu2+度 (0.5,5,50,500μg/L) 中,持续7天或14天.
- 测量了甲状腺激素水平 (T4,T3),基因表达 (dio1,dio2,nis,tg,ttf1,pax8),抗氧化酶活动 (SOD,CAT,GR),脂质过氧化和谷氨 (GSH) 含量.
- 记录了生存率和身体长度,并进行了生物标志物响应综合评估 (IBR) 分析.
主要成果:
- 2+暴露显著降低了全身T4和T3水平,改变了甲状腺激素合成和脱基因表达.
- 抗氧化系统受损,SOD,CAT,GR活动增加和脂质过氧化,但GSH含量降低.
- 幸存率和身体长度为S. 年轻的husbandi幼虫显著减少,显示剂量和时间依赖的影响.
结论:
- 暴露于Cu2+会破坏甲状腺内分泌和抗氧化系统. 年轻的husbandi幼虫.
- 在暴露于Cu2+的幼虫中观察到发育性毒性,包括减少生存和生长.
- 这些发现凸显了铜污染对拉萨河本土鱼类的生态风险.
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