Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder primarily affecting the elderly, characterized by severe cognitive impairment and memory loss. Emerging evidence suggests that neuroinflammation plays a significant role in AD pathogenesis, with cytokines like interleukin-6 (IL-6) and C-X-C motif chemokine ligand 8 (CXCL8) contributing to the disease progression. We utilized GEO datasets to identify IL-6 and CXCL8 as pivotal inflammatory markers in AD. In vitro experiments were conducted using SK-N-BE(2)-M17 and THP-1 cell lines treated with IL-6 and CXCL8 to model AD. Additionally, in vivo tests on Amyloid Precursor Protein/Presenilin 1 (APP/PS1) AD mouse models were performed to assess the impact of these cytokines on cognitive functions and brain pathology. The results indicated a significant decrease in cell viability, increased apoptosis, and elevated inflammatory factor secretion following IL-6 and CXCL8 treatment in vitro. In vivo, AD mouse models treated with these cytokines exhibited exacerbated emotional distress, decreased social interaction, impaired cognitive functions, and increased amyloid protein deposition in neural tissues. The study highlights the detrimental effects of IL-6 and CXCL8 on neuronal health and cognitive functions in AD. These findings suggest that targeting these cytokines could offer potential therapeutic interventions for improving patient outcomes in Alzheimer's disease.
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