Involvement of CD36 in Modulating the Decrease of NPY and AgRP Induced by Acute Palmitic Acid Stimulation in N1E-115...

Area of Science:

• Neuroscience
• Metabolism
• Molecular Biology

Background:

• Central nervous system (CNS) fatty acid sensing is crucial for regulating food intake.
• Palmitic acid (PA), a major dietary long-chain fatty acid (LCFA), influences appetite regulation.
• The role of cluster of differentiation 36 (CD36) in mediating these effects is not fully understood.

Purpose of the Study:

• To investigate the impact of PA on central neuropeptide expression.
• To elucidate the role of CD36 in mediating PA's effects on neuropeptide expression.

Main Methods:

• N1E-115 cells were cultured with PA.
• CD36 inhibition was achieved using sulfosuccinimidyl-oleate (SSO).
• Neuropeptide mRNA expression (NPY, AgRP) and CD36 expression were quantified.

Main Results:

• PA significantly decreased NPY and AgRP mRNA expression within 20 minutes.
• PA upregulated CD36 expression in N1E-115 cells.
• CD36 inhibition with SSO attenuated the PA-induced decrease in NPY and AgRP mRNA levels.

Conclusions:

• CD36 is implicated in the reduction of NPY and AgRP expression induced by PA in the CNS.
• These findings highlight CD36 as a potential mediator in fatty acid-driven appetite regulation.