Modulation of Immune Function in Rats Using Oligosaccharides Extracted from Palm Kernel Cake

Area of Science:

• Microbiology
• Immunology
• Nutritional Science

Background:

• Prebiotics modulate gut microbiota and immune responses.
• Mannan-based oligosaccharides are recognized for their potential health benefits.

Purpose of the Study:

• To evaluate the prebiotic and immunomodulatory effects of PKC extract (OligoPKC).
• To assess OligoPKC's impact on gut bacteria, immune markers, liver function, and gene expression in rats.

Main Methods:

• 24 male rats were fed a basal diet with 0% (control), 0.5%, or 1% OligoPKC for four weeks.
• Parameters measured included growth, gut microbiota composition, serum and cecal immunoglobulins, liver antioxidant capacity, lipid peroxidation, and immune-related gene expression.

Main Results:

• OligoPKC did not significantly affect growth parameters.
• It increased beneficial bacteria and total bacterial populations while decreasing pathogens.
• OligoPKC elevated serum and cecal immunoglobulins, enhanced liver antioxidant capacity, and reduced lipid peroxidation.
• Gene expression related to intestinal immune function was modulated by OligoPKC.

Conclusions:

• OligoPKC demonstrates potential as a mannan-based prebiotic.
• It positively influences gut microbiota and immune responses in rats.
• OligoPKC may contribute to improved health and well-being.