在老鼠模型中学习和记忆表现,对周周期阿片类药物暴露的模型
Meghan E Vogt1, Anne Z Murphy1
1Neuroscience Institute, Georgia State University, 100 Piedmont Ave Se., Atlanta, GA 30303.
bioRxiv : the preprint server for biology
|December 22, 2025
概括
孕期阿片类药物暴露会损害青少年大鼠的空间和协会学习. 环境丰富部分地挽救了这些男性的认知缺陷,这表明了对发展效应的潜在干预措施.
科学领域:
- 神经科学是一个神经科学.
- 发育生物学 发展生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 对于生育年龄的女性来说,阿片类药物处方很常见,在怀孕期间的比例很高.
- 孕期阿片类药物暴露会导致儿童的神经发育障碍和学习障碍.
- 开发了一种老鼠模型来研究危险性阿片类药物暴露对大脑发育的影响.
研究的目的:
- 描述大脑发育期间外源性阿片类药物暴露对学习和记忆的影响.
- 为了评估男性和女性后代的认知表现,随着危险的吗啡暴露.
- 评估环境丰富对减轻阿片类药物诱导的神经发育缺陷的有效性.
主要方法:
- 使用了一种大鼠模型,在怀孕之前开始暴露于吗啡,并持续到第一个产后周.
- 评估了青少年男性和女性后代的空间学习 (巴恩斯迷宫) 和协会学习 (注意力设置转换任务).
- 研究了环境丰富对孕期暴露于吗啡的后代认知表现的影响.
主要成果:
- 吗啡暴露选择性地损害了青少年后代的空间和关联性学习.
- 孕期阿片类药物暴露对工作记忆和短期记忆没有显著影响.
- 环境丰富在男性中挽救了空间学习缺陷,但在女性中却没有.
结论:
- 孕期阿片类药物暴露会损害复杂的认知功能,特别是空间和关联性学习.
- 像环境丰富等非侵入性干预措施可能会减轻一些认知缺陷.
- 这些发现突显了产前阿片类药物暴露和潜在的治疗途径对神经发育的持久后果.
更多相关视频
04:11A Conditioned Place Preference Protocol for Measuring Incubation of Craving in Rats
Published on: November 6, 2018
17.6K
09:54Combining Laser Capture Microdissection and Microfluidic qPCR to Analyze Transcriptional Profiles of Single Cells: A Systems Biology Approach to Opioid Dependence
Published on: March 8, 2020
5.6K
相关概念视频
01:35Long-term Potentiation
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
01:26Higher Mental Functions of Brain: Learning and Memory
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or playing an...
01:21Cognitive Learning
Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
01:12Observational Learning
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning because...
01:19Understanding Memory
Memory is the retention of information or experiences over time, facilitated through three main processes: encoding, storage, and retrieval. Encoding is the process of inputting information into the memory system. For instance, when listening to a lecture, watching a play, reading a book, or having a conversation, the brain is actively encoding information. This initial stage involves transforming sensory input into a form that can be processed and stored by the brain. Various factors, such as...
01:19Role of Hippocampus in Memory
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...