Rheumatoid Arthritis Treatment Potential of Stearic Acid Nanoparticles of Quercetin in Rats

Area of Science:

• Nanotechnology
• Pharmacology
• Biomedical Engineering

Background:

• Rheumatoid arthritis (RA) is a chronic inflammatory disease.
• Current treatments have limitations, necessitating novel therapeutic approaches.
• Quercetin exhibits anti-inflammatory properties but has poor bioavailability.

Purpose of the Study:

• To fabricate and characterize quercetin-loaded stearic acid solid lipid nanoparticles (SLNs).
• To evaluate the anti-inflammatory efficacy of these SLNs in a FCA-induced rheumatoid arthritis rat model.
• To assess the impact of quercetin-loaded SLNs on key inflammatory biomarkers.

Main Methods:

• Solid lipid nanoparticles (SLNs) were prepared using the hot melt encapsulation method.
• Characterization included Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM).
• Anti-inflammatory activity was assessed by measuring levels of tumor necrosis factor-alpha (TNF-α) and rheumatoid factor in arthritic rats.

Main Results:

• Quercetin-loaded stearic acid SLNs were successfully synthesized with an average size of 100 nm and zeta potential of -25 mV.
• FTIR confirmed successful quercetin loading into the stearic acid matrix.
• Treatment with quercetin-loaded SLNs significantly reduced inflammatory markers (p < 0.001) in the RA rat model.

Conclusions:

• Quercetin-loaded stearic acid SLNs demonstrate significant anti-inflammatory potential.
• The developed nanoparticles offer a promising strategy for enhancing quercetin bioavailability and efficacy in treating rheumatoid arthritis.
• This formulation represents a viable therapeutic option for managing inflammatory joint diseases.