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Cinnamaldehyde (CNMA) protects against aluminum nanoparticle (AlNP)-induced cognitive decline by modulating brain signaling pathways. This natural compound shows promise in mitigating neurotoxicity associated with AlNP exposure.

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Area of Science:

  • Neuroscience
  • Toxicology
  • Pharmacology

Background:

  • Aluminum (Al) exposure is linked to Alzheimer's Disease (AD) pathogenesis.
  • Aluminum nanoparticles (AlNPs) show greater neurotoxicity than Al ions.
  • Cinnamaldehyde (CNMA) possesses known neuroprotective properties.

Purpose of the Study:

  • To investigate CNMA's efficacy in counteracting AlNP-induced cognitive deficits.
  • To explore CNMA's impact on hippocampal signaling pathways (ERK and p38).

Main Methods:

  • Adult male Swiss mice received AlNPs orally, with or without varying doses of CNMA intraperitoneally.
  • Cognitive function was assessed using the novel object recognition (NOR) test.
  • Hippocampal p-ERK and p-p38 protein levels were analyzed via Western blot.

Main Results:

  • AlNP exposure significantly impaired cognitive function and increased hippocampal p-ERK and p-p38 levels.
  • CNMA treatment, especially at 300 mg/kg, ameliorated cognitive deficits.
  • CNMA attenuated the AlNP-induced activation of ERK and p38 signaling pathways.

Conclusions:

  • CNMA demonstrates neuroprotective effects against AlNP-induced cognitive impairment.
  • Modulation of hippocampal ERK and p38 signaling pathways is a potential mechanism for CNMA's action.
  • CNMA represents a potential natural therapeutic for mitigating AlNP neurotoxicity.