Decoding Lupus Diagnosis, Pathogenesis and Therapy: From Systemic Autoimmunity to Renal Damage

Area of Science:

• Immunology
• Nephrology
• Autoimmunity

Background:

• Systemic lupus erythematosus (SLE) is a chronic autoimmune disease.
• Lupus nephritis (LN) significantly increases morbidity and mortality in SLE patients.
• LN affects 30% at diagnosis and up to 60% within a decade.

Purpose of the Study:

• To review the pathogenic mechanisms of lupus nephritis.
• To emphasize the role of the innate immune system in SLE and LN pathogenesis.
• To discuss current and novel treatment strategies for LN.

Main Methods:

• Review of pathogenic mechanisms in SLE and LN.
• Emphasis on innate and adaptive immune system interplay.
• Exploration of immunological processes driving kidney damage.
• Discussion of treatment strategies and podocyte protection.

Main Results:

• Dysregulated cell death, impaired debris clearance, and innate immune cell involvement drive autoimmunity.
• Autoreactive lymphocyte expansion leads to autoantibodies and renal injury.
• Kidney damage involves autoantibodies, immune complexes, complement activation, and leukocyte recruitment.

Conclusions:

• Innate immune system dysregulation is central to SLE and LN pathogenesis.
• Targeted therapies aim to mitigate immune activation and protect kidney structures like podocytes.
• Understanding these mechanisms is crucial for developing effective LN treatments.