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Proanthocyanidins affects the neurotoxicity of Aβ25-35 on C57/bl6 mice
1Department of Neurology, The First People's Hospital, Xuzhou, China. heqing1234@126.com.
Objective:
To investigate the influence of procyanidins on the impairment of memory.
Materials And Methods:
Thirty male C57bl/6 mice were divided into five groups: low, middle, and high concentration, model, and control groups. Intracerebroventricular injection of β-amyloid25-35 in C57bl/6 mice caused an impairment of learning and memory. Next day, intragastric administration of procyanidins in the treatment group mice: (lower, middle and high concentration). Hoechst staining observed apoptosis of neuronal nuclei in the hippocampus. Immunohistochemistry determined synaptic remodeling reaction and the expression level of glial inflammatory response.
Results:
Compared with the model group, the proportion of neuronal apoptosis decreased in the hippocampal CA1 region of the treatment group. The Synaptic (SYN) density was increased, and the level of activated astrocytes and microglia expression in the hippocampus was decreased.
Conclusions:
Procyanidins have a protective influence on Aβ25-35 mice hippocampus neuron, reducing nerve cell damage and eases learning and memory deficit.
Insights
Procyanidins protect hippocampus neurons in mice with impaired memory and learning. This natural compound reduces nerve cell damage and eases cognitive deficits, offering a potential therapeutic avenue.
Area of Science:
- Neuroscience
- Pharmacology
Background:
- Amyloid-beta (Aβ) peptide is implicated in cognitive decline.
- Memory impairment is a significant neurological concern.
Purpose of the Study:
- To evaluate the neuroprotective effects of procyanidins.
- To investigate procyanidins' impact on memory impairment induced by Aβ25-35.
Main Methods:
- Aβ25-35 was used to induce memory deficits in mice.
- Procyanidins were administered at varying concentrations.
- Neuronal apoptosis, synaptic density, and glial inflammatory responses were assessed.
Main Results:
- Procyanidins significantly reduced neuronal apoptosis in the hippocampus.
- Synaptic density increased in procyanidin-treated mice.
- Activated astrocyte and microglia expression decreased, indicating reduced neuroinflammation.
Conclusions:
- Procyanidins demonstrate a protective effect on hippocampus neurons against Aβ25-35 toxicity.
- These findings suggest procyanidins can mitigate learning and memory deficits.
