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Early Memory Impairment is Accompanied by Changes in GluA1/ p-GluA1 in APP/PS1 Mice.
Ya-Bo Zhao1, Xue-Fei Hou2, Xin Li2
1Laboratory of Learning and Memory, Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Kunming, Yunnan 650223, China.
Current Alzheimer Research
|October 24, 2022
Summary
Early Alzheimer's disease (AD) memory deficits in APP/PS1 mice begin at 4 months, linked to changes in AMPA receptor subunit GluA1. This suggests GluA1 is crucial for early AD neurobiology.
Area of Science:
- Neurobiology
- Neuroscience
- Alzheimer's Disease Research
Background:
- Early diagnosis of Alzheimer's disease (AD) is critical for prognosis, yet early symptoms are subtle and difficult to detect.
- Mechanisms underlying early AD remain underexplored, despite the importance of AMPA receptors (AMPARs) in learning and memory.
Purpose of the Study:
- To investigate the neurobiological mechanisms of early AD damage by examining learning and memory abilities.
- To analyze changes in AMPA receptor (AMPAR) expression in APP/PS1 mice at 4, 8, and 12 months of age.
Main Methods:
- Utilized the Morris water maze to assess learning and memory impairment in APP/PS1 mice.
- Employed western blotting to quantify changes in AMPAR expression levels.
Main Results:
- Memory impairment was evident in APP/PS1 mice as early as 4 months of age, worsening with age.
- Alterations in GluA1 and phosphorylated GluA1 (p-GluA1) were most significant during the early stages of AD in these mice.
Conclusions:
- Memory deficits in APP/PS1 mice can be detected at 4 months of age.
- Early AD-related neurological injury in this model may be associated with the GluA1 subunit of AMPA receptors.
Keywords:
AMPARAPP/PS1 miceAlzheimer's diseaseearly memory impairmentneurofibrillary tangleswestern blotting.
