Sinusoidal embolization: impact of iodized oil on hepatic microcirculation

Area of Science:

• Hepatobiliary system
• Vascular biology
• Interventional radiology

Background:

• Chemoembolization is a common treatment for liver cancer.
• Iodized oil is frequently used as an embolic agent.
• Understanding its impact on hepatic microcirculation is crucial for patient outcomes.

Purpose of the Study:

• To evaluate the effects of iodized oil on liver microcirculation.
• To determine the recovery time of hepatic microcirculation after iodized oil administration.

Main Methods:

• Rats received varying doses (0.1, 0.2, 0.4 mL/kg) of iodized oil via hepatic artery injection.
• In vivo microscopy assessed microcirculation during and after the procedure, with follow-ups up to 60 days.
• A control group underwent identical microscopy procedures.

Main Results:

• Iodized oil injection led to incomplete sinusoidal embolization.
• Microcirculation recovery times varied with dose: 3 days (0.1 mL/kg), 7 days (0.2 mL/kg), and 30 days (0.4 mL/kg).
• Despite initial changes, complete recovery was observed in all groups.

Conclusions:

• The liver demonstrates good tolerance to iodized oil embolization.
• Hepatic microcirculation recovers fully, despite dose-dependent nonlinear recovery patterns.
• Iodized oil chemoembolization is a safe procedure with predictable recovery dynamics.