相关实验视频
Updated: Jun 23, 2026
07:57
Necropsy-based Wild Fish Health Assessment
Published on: September 11, 2018
17.0K
微塑料在鱼类中诱导有毒作用:生物积累,血液学参数和抗氧化反应
A-Hyun Jo1, Young-Bin Yu2, Jae-Ho Choi2
1Department of Marine Life Science, Jeju National University, Jeju, 63243, South Korea.
Chemosphere
|March 1, 2025
概括
聚胺微塑料积聚在鱼的组织中,造成严重的伤害. 这项研究表明,微塑料暴露会改变韩国公牛头的血液参数和抗氧化剂防御,表明潜在的淡水生态系统毒性.
科学领域:
- 环境毒理学环境毒理学
- 水生生态学 水生生态学
- 鱼类生理学 鱼类生理学
背景情况:
- 微塑料污染在淡水生态系统中越来越令人担忧.
- 退化塑料形成微塑料,威胁水生生物.
- 聚胺微塑料 (PA-MPs) 是普遍存在的环境污染物.
研究的目的:
- 为了研究PA-MPs对年轻的韩国牛头 (Pseudobagrus fulvidraco) 的毒性影响.
- 为了评估PA-MP暴露后的生物积累,血液学参数和抗氧化剂反应.
- 评估微塑料在淡水鱼类中产生的生理压力.
主要方法:
- 年轻的P. fulvidraco被暴露在不同度的PA-MPs (010,000 mg/L) 中96小时.
- 分析了肠道,和肝脏中的生物积累.
- 测量了血液学参数 (血红蛋白,血红素) 和血生物化学.
- 评估了抗氧化酶活动 (SOD,CAT,GST).
主要成果:
- PA-MPs主要在肠道,和肝脏中积累.
- 在高PA-MP度下观察到血红蛋白和血红素的显著降低.
- 血生化标志物 (,葡萄糖,肝酶) 的变化也被发现.
- 抗氧化酶活性随着PA-MP暴露而增加 (SOD,CAT) 或减少 (GST).
结论:
- 暴露PA-MP会导致鱼类关键组织中的生物积累.
- 微塑料通过改变血液和抗氧化剂防御机制来诱导生理压力.
- 这些发现凸显了微塑料对淡水鱼群的潜在毒性.
相关概念视频
00:57The Periodic Table and Organismal Elements
Elements are the smallest units of matter that cannot be broken down further by chemical processes. There are 118 known elements, but not all of these are naturally-occurring, and fewer still are essential for life. Living matter is composed primarily of carbon, nitrogen, hydrogen, and oxygen, with smaller amounts of other elements like calcium, phosphorus, potassium, and sulfur. Other elements are also necessary for life but only in trace amounts.The Periodic Table Provides Information about...
01:23Toxicity Testing in Animals
Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...