Diosgenin Inhibits Excessive Proliferation and Inflammatory Response of Synovial Fibroblasts in Rheumatoid Arthritis...

Area of Science:

• Biochemistry
• Immunology
• Pharmacology

Background:

• Rheumatoid arthritis (RA) is a chronic inflammatory condition causing joint damage.
• Synovial cell abnormalities, including excessive proliferation and inflammation, are key features of RA.
• Diosgenin is recognized for its anti-inflammatory properties.

Purpose of the Study:

• To investigate the effects and mechanisms of diosgenin on RA synovial cell proliferation and inflammation.
• To elucidate the role of phosphodiesterase 3B (PDE3B) in diosgenin's therapeutic action.

Main Methods:

• Cell viability assessed using CCK-8 assays.
• Apoptosis and protein expression analyzed via TUNEL assays and Western blotting.
• Cell migration and inflammatory cytokine levels measured using wound healing assays and ELISA kits.

Main Results:

• Diosgenin significantly inhibited proliferation and migration of RA synovial cells.
• Diosgenin reduced inflammatory responses in RA synovial cells.
• Downregulation of PDE3B expression was observed with diosgenin treatment, and its overexpression reversed diosgenin's effects.

Conclusions:

• Diosgenin demonstrates therapeutic potential by inhibiting excessive proliferation and inflammatory responses of RA synovial fibroblasts.
• Targeting PDE3B is a key mechanism through which diosgenin exerts its anti-RA effects.