青少年过度饮酒暴露加速阿尔茨海默氏症相关的基础前脑神经病理通过亲炎性HMGB1信号传递

相关实验视频

Updated: May 3, 2026

Preparation of Acute Hippocampal Slices from Rats and Transgenic Mice for the Study of Synaptic Alterations during Aging and Amyloid Pathology

Published on: March 23, 2011

93.9K

Rachael P Fisher¹, Lindsay Matheny¹, Sarrah Ankeny¹

¹Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States.

Frontiers in aging neuroscience

|March 6, 2025

概括

青少年过度饮酒可能会通过引发持续的神经炎症来增加阿尔茨海默病 (AD) 风险. 这项研究发现,早期暴露于酒精会通过高流动性组盒1 (HMGB1) 信号加速AD神经病理,特别是在女性中.

科学领域:

神经科学是一个神经科学.
神经炎症是一种神经炎症.
阿尔茨海默氏症 (AD) 病原体的发生

背景情况:

过度饮酒与阿尔茨海默氏症 (AD) 神经病理学有关.
酒精使用障碍 (AUD) 和AD共享神经免疫信号 (HMGB1) 和胆固醇神经元退化.
青少年过度饮酒是AUD的危险因素,可能导致持续的神经炎症.

研究的目的:

为了调查青少年过度饮酒是否会增加AD神经病理的风险.
为了确定早期的酒精暴露是否持续诱导HMGB1神经免疫信号.
检查HMGB1在青少年暴露于酒精后调解AD相关神经病理方面的作用.

主要方法:

实验1:从AUD和青少年饮酒开始的人身上分析了死后人类基础前脑组织.
实验2:用青少年间歇性乙醇 (AIE) 治疗5xFAD小鼠 (AD的模型) 并评估神经病理.
实验3:用AIE治疗5xFAD雌性小鼠,然后用HMGB1抑制剂 (糖酸) 评估救援效应.

主要成果:

人类AUD大脑显示HMGB1信号,微质激活和神经内Aβ积累的增加.
在5xFAD小鼠中的AIE加速了AD神经病理学和胆固醇神经元损失,特别是在雌性中.
在雌性5xFAD小鼠中,HMGB1抑制逆转了AIE诱导的神经炎症和胆能神经元损失.

结论:

青少年狂欢乙醇暴露可能是成人发病AD神经病理学的低估因素.
持续的HMGB1介导的神经炎症将青少年的酒精使用与AD类病理联系起来.
针对HMGB1信号可能为患AD风险的酒精暴露个体提供治疗策略.

关键词:

这就是HMGB1的特点.胆固醇神经元是一种神经元.乙醇乙醇是一种微质细胞中的微质细胞神经炎症是一种神经炎症.

相关概念视频

01:28

Disorders of the Nervous Tissue

3.0K

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...

3.0K

01:27

CNS Depressants: Alcohol and Nicotine

1.7K

Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...

1.7K

01:28

Human Genetics

2.0K

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...

2.0K

01:29

Alzheimer Disease l: Introduction

Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...

01:21

Huntington Disease l: Introduction

110

Huntington disease or HD is a progressive, fatal neurodegenerative disorder inherited in an autosomal dominant pattern.PathophysiologyIt is caused by expansion of the CAG trinucleotide repeat in the HTT gene on chromosome 4 (4p16.3), producing an abnormal huntingtin protein with an expanded polyglutamine tract. This misfolded protein disrupts cellular function, leading to neuronal death. Normal alleles have ≤26 repeats, 27–35 are intermediate (risk of expansion), 36–39 show...

110