Cell-mediated immune responses in chronic liver diseases

Area of Science:

• Immunology
• Hepatology
• Cellular Immunology

Background:

• Cell-mediated immunity plays a role in various liver disorders.
• The leucocyte migration test can assess cellular immune responses to specific antigens.

Purpose of the Study:

• To investigate cell-mediated immune responses to liver antigens in patients with diverse liver conditions.
• To evaluate the impact of immunosuppressive therapy on these immune responses.

Main Methods:

• Leucocyte migration test performed on 163 patients with various liver disorders.
• Assessment of responses to liver, salivary gland, and kidney antigens.
• Correlation of immune responses with clinical diagnosis and treatment status.

Main Results:

• Abnormal leucocyte migration was most frequent in primary biliary cirrhosis (64%) and active chronic hepatitis (53%).
• Abnormal responses were also noted in drug hypersensitivity jaundice and in cases with multisystem involvement (Sjögren's syndrome, renal tubular acidosis).
• Patients with active chronic hepatitis on immunosuppressive therapy (prednisone, azathioprine) showed more normal test results and improvement during treatment.

Conclusions:

• Cell-mediated immune responses are implicated in the pathogenesis and perpetuation of chronic liver diseases.
• Cross-reactivity with antigens in other organs may explain multisystem involvement in some liver conditions.
• Immunosuppressive therapy may modulate these aberrant immune responses, potentially aiding disease management.