重复服用低剂量的脂多糖会加剧社会隔离引起的行为变化
Gabriele Cheiran Pereira1, Elisa Piton Lovis1, Fernanda Tibolla Viero1
1Center of Health Sciences, Department of Physiology and Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Center of Health Sciences, Postgraduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
Neuroscience
|July 15, 2025
概括
在年轻小鼠中,社会隔离和低剂量的LPS诱导了类似于主要抑郁症 (MDD) 的行为变化. 这些效应在组合时是附加的,并且克制压力部分扭转了它们.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 免疫学 免疫学 免疫学
背景情况:
- 在COVID-19大流行期间,社会隔离 (SI) 加剧了诸如主要抑郁症 (MDD) 和焦虑症等心理健康问题.
- 炎症反应和慢性压力与精神健康障碍的发展有关,特别是在年轻人中.
研究的目的:
- 研究社会隔离和低剂量脂聚糖 (LPS) 诱导的炎症对年轻成年小鼠的行为和分子变化的综合影响.
- 评估制压力挑战 (RSC) 对这些诱导变化的影响.
主要方法:
- 年轻的雄性小鼠接受了社会隔离或团体住房,并在六周内给予低剂量的LPS或盐水.
- 进行了行为测试,在测试之前,一组动物接受了RSC.
主要成果:
- 仅仅是社会隔离就破坏了自我理,记忆,诱导了类似焦虑的行为,并增加了海马TRPA1的表达.
- 服用LPS导致了类似于绝望的行为,并增加了海马微质激活.
- 结合SI和LPS导致了附加性行为改变. 一般来说,RSC可以逆转大多数由协议引起的变化.
结论:
- 在社会隔离的年轻小鼠中,重复低剂量LPS的使用诱导了与MDD一致的行为表型.
- 这项研究强调了社会环境,炎症和压力在塑造成人心理健康结果中的相互作用.
相关概念视频
Drug Dependence
Medications are typically administered to achieve therapeutic effects. Some drugs can modify an individual's mood and perception, frequently resulting in various enjoyable experiences. However, this can result in drug dependency, a condition marked by continuous drug use despite potential negative consequences. Drug dependency primarily falls into two categories: psychological and physical dependence. Psychological dependence occurs when the pleasurable feelings induced by the drug...
Desensitization and Tachyphylaxis
Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
Several...
Several...
CNS Depressants: Alcohol and Nicotine
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...
Overview of Carbohydrate Metabolism
Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
Pulmonary Tuberculosis I
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Substance Use Disorders Affecting Sleep
Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
Understanding the concepts of physical dependence,...
Understanding the concepts of physical dependence,...


