[Pathophysiology of obstructive jaundice and its surgical problems]

Area of Science:

• Hepatology and mitochondrial physiology.
• Investigates liver function, metabolism, and cellular responses to biliary obstruction.

Context:

• Obstructive jaundice significantly impacts liver function.
• Understanding the effects on mitochondrial respiration, ketogenesis, and collagen metabolism is crucial for patient management.

Purpose:

• To investigate the effects of biliary obstruction on liver mitochondrial respiratory function, ketogenesis, and collagen metabolism in rats, dogs, and humans.
• To evaluate the potential for functional recovery after relief of obstruction and the efficacy of therapeutic interventions.

Summary:

• Prolonged biliary obstruction led to decreased mitochondrial respiratory function and ketogenesis, alongside increased hepatic collagen synthesis in animal models.
• Relief of obstruction resulted in partial or complete functional recovery, dependent on obstruction duration and post-relief period.
• Steroid hormone and Coenzyme Q (CoQ) administration showed partial improvement in mitochondrial function in jaundiced rats. Cross-circulation experiments indicated a systemic effect on mitochondrial function.

Impact:

• Findings support pre-operative biliary drainage (4-6 weeks) for jaundiced patients undergoing major surgery.
• Steroid/CoQ therapy and plasma exchange are identified as potentially beneficial supportive treatments for obstructive jaundice.