[Phagocytic activity in rheumatoid arthritis]

Area of Science:

• Immunology
• Rheumatology

Context:

• Rheumatoid arthritis (RA) is a chronic inflammatory disease affecting joints.
• Leukocyte functions, including phagocytosis and cytotoxicity, are crucial for immune response.
• Current RA treatments aim to modulate immune activity and reduce inflammation.

Purpose:

• To investigate the phagocytic activity and antibody-dependent cytotoxicity of leukocytes in patients with active rheumatoid arthritis.
• To compare immune cell function between RA patients and a healthy control group.
• To evaluate the impact of gold compounds versus non-steroidal anti-inflammatory drugs (NSAIDs) on these leukocyte functions.

Summary:

• Leukocyte spontaneous mobility, phagocytic activity, and antibody-dependent cytotoxicity were significantly lower in RA patients compared to controls (P < 0.001).
• No significant differences in these immune functions were found between RA patients treated with gold compounds and those treated with NSAIDs.
• Within the gold compound group, phagocytic activity was lower with Tauredon® compared to Auropan® (P = 0.05).

Impact:

• Findings suggest impaired innate and adaptive immune responses in active RA.
• The study indicates that commonly used RA treatments may not fully restore leukocyte phagocytic and cytotoxic functions.
• Further research into specific gold compounds may reveal differential effects on immune cell activity.