急性和慢性暴露在双和PFAS对神经元活动和网络发展的影响
Lennart V J van Melis1, Arjuna R Persad1, Anneloes M Peerdeman1
1Neurotoxicology Research Group, Division of Toxicology, Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80.177, NL-3508, TD, Utrecht, the Netherlands.
The Science of the total environment
|August 10, 2025
概括
双,但不是PFAS,在大鼠皮质培养物中显著改变了神经元活动和网络发展. 结构上的差异和暴露时间影响了双醇的神经毒性,这表明非内分泌机制.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 环境健康 环境健康
背景情况:
- 双和 perfluoroalkyl 物质 (PFAS) 是环境污染物,与神经发育和其他健康问题有关.
- 虽然对早期神经发育的影响已知,但对神经元活动和网络形成的影响需要进一步研究.
研究的目的:
- 调查急性和慢性暴露于特定双 (BPA,BPF,BPS) 和 PFAS (PFOA,PFOS,PFHxS) 对神经元活动和网络发展的影响.
- 探索潜在的内分泌介导机制,以此为基础观察到的神经毒性作用.
主要方法:
- 利用初级大鼠皮质培养和微电极阵列 (MEA) 记录来评估神经元活动和网络发展.
- 检查了各种双和PFAS的急性和慢性暴露的影响.
- 研究了雌激素,葡萄糖皮质激素,甲状腺和基碳化合物受体通路的作用.
主要成果:
- 对双A (BPA) 和双F (BPF) 的急性暴露降低了神经元活动;双S (BPS) 没有急性影响.
- 长期暴露于BPA (100微米) 损害了网络的发展,而较低的BPA (10微米),BPF (100微米) 和BPS (100微米) 引起过度兴奋.
- 在急性和慢性暴露条件下,PFAS化合物 (PFOS,PFOA,PFHxS) 在神经元活动和网络发展上表现出有限的影响.
- 皮层培养物对内分泌路径调节剂显示不敏感,这表明观察到的神经毒性不太可能是内分泌介导的.
结论:
- 双神经毒性取决于分子结构和暴露时间,影响神经元活动和网络发展.
- 在这种体外模型中,PFAS表现出最小的神经毒性作用.
- 在这项研究中,双的神经毒性作用似乎独立于研究的内分泌通路.
相关概念视频
Types of Toxins
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Toxic Reactions: Overview
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Disorders of the Nervous Tissue
Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...
Stress and Mental Health
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
Individuals with depression often experience challenges in both their personal and professional...
Post-traumatic Stress Disorder
Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events, are a...
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events, are a...
Hepatic Encephalopathy
DefinitionHepatic encephalopathy is a reversible neurologic syndrome that results from advanced liver dysfunction or portosystemic shunting. It leads to disturbances in cognition, behavior, and motor function due to the brain’s exposure to gut-derived toxins that the liver fails to detoxify.EtiologyThis condition develops either in the setting of acute fulminant hepatitis or progressively during chronic liver disease, such as cirrhosis and portal hypertension. Portosystemic shunting—including...


