Postischemic ATP levels predict hepatic function 24 hours following ischemia in the rat

Area of Science:

• Biomedical Sciences
• Physiology
• Hepatology

Background:

• Partial hepatic ischemia can impair liver function.
• Assessing post-ischemic liver function is crucial for patient outcomes.
• The aminopyrine breath test (ABT) is a measure of hepatic function.

Purpose of the Study:

• To evaluate hepatic function using ABT in rats after partial hepatic ischemia.
• To determine the correlation between ABT results and biochemical markers of liver injury.
• To identify reliable indicators of hepatic function post-ischemia.

Main Methods:

• Male Sprague Dawley rats underwent partial hepatic ischemia for 90 or 120 minutes.
• Hepatic function was assessed 24 hours post-ischemia using the aminopyrine breath test (ABT).
• Adenosine triphosphate (ATP) levels in ischemic liver lobes and plasma alanine aminotransferase (ALT) activity were measured 1 hour after reperfusion.

Main Results:

• ABT significantly decreased with longer ischemia durations (90 and 120 minutes).
• ABT at 24 hours post-ischemia strongly correlated with ATP levels at 1 hour post-reperfusion (r² = 0.971).
• ABT showed a weak correlation with plasma ALT activity at 1 hour post-reperfusion (r² = 0.391).

Conclusions:

• Post-ischemic adenosine triphosphate (ATP) levels are a more accurate predictor of subsequent hepatic function than ALT.
• The aminopyrine breath test (ABT) is a sensitive indicator of liver function recovery after ischemia.
• ATP levels may serve as a valuable biomarker for assessing liver viability and function following ischemic injury.