Ferulic acid prevents the injury-induced decrease of γ-enolase expression in brain tissue and HT22 cells

Area of Science:

• Neuroscience
• Biochemistry
• Pharmacology

Background:

• Ferulic acid exhibits antioxidant properties and neuroprotective effects against cerebral ischemia.
• Gamma-enolase, a neuron-specific protein, also demonstrates neuroprotective capabilities.
• The interaction between ferulic acid and gamma-enolase in neuronal injury remains largely unexplored.

Purpose of the Study:

• To investigate the effect of ferulic acid on gamma-enolase expression in models of brain injury.
• To determine if ferulic acid can prevent decreases in gamma-enolase during middle cerebral artery occlusion (MCAO) and glutamate exposure.

Main Methods:

• Adult male rats underwent MCAO and were treated with ferulic acid or vehicle.
• Proteomics, reverse-transcription PCR, and Western blot analyses were used to assess gamma-enolase expression.
• Hippocampal cell lines were exposed to glutamate to mimic excitotoxicity, with or without ferulic acid treatment.

Main Results:

• MCAO-induced brain injury led to decreased gamma-enolase expression in vehicle-treated rats.
• Ferulic acid treatment attenuated the MCAO-induced decrease in gamma-enolase expression.
• Glutamate exposure in cell lines also reduced gamma-enolase levels, an effect counteracted by ferulic acid.

Conclusions:

• Ferulic acid administration prevents the reduction of gamma-enolase expression caused by MCAO-induced injury.
• Ferulic acid mitigates glutamate-induced decreases in gamma-enolase expression in neuronal cells.
• These findings indicate that ferulic acid's neuroprotective mechanism involves preserving gamma-enolase levels.