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Immunosuppressants decrease neutrophil chemoattractant and attenuate ischemia/reperfusion injury of the liver in rats
T Matsuda1, Y Yamaguchi, F Matsumura
1Department of Surgery II, Kumamoto University Medical School, Honjo, Japan.
The Journal of Trauma
|April 7, 1998
Summary
Immunosuppressants like azathioprine and cyclosporine A reduce neutrophil accumulation, significantly attenuating liver ischemia/reperfusion injury. These findings highlight potential therapeutic strategies for liver damage.
Area of Science:
- Immunology
- Hepatology
- Pharmacology
Background:
- Neutrophils are implicated in liver ischemia/reperfusion (I/R) injury.
- Investigating immunosuppressants' effects on neutrophil chemoattractant (CINC) in liver I/R is crucial.
Purpose of the Study:
- To evaluate the impact of azathioprine (AZA), cyclosporine A (CsA), tacrolimus (FK506), and rapamycin (RPM) on CINC expression post-liver I/R.
- To determine if these immunosuppressants can mitigate liver I/R injury by modulating neutrophil activity.
Main Methods:
- Male Wistar rats underwent 30 minutes of liver ischemia.
- Animals received intramuscular injections of AZA, CsA, FK506, or RPM prior to ischemia/reperfusion.
- Serum and liver tissue CINC levels, myeloperoxidase activity, neutrophil counts, and liver enzyme levels were assessed.
Main Results:
- AZA, CsA, FK506, and RPM significantly inhibited the increase in serum and liver CINC levels and mRNA expression post-reperfusion.
- These immunosuppressants reduced neutrophil accumulation and myeloperoxidase activity in the liver.
- Treatment with AZA, CsA, FK506, and RPM correlated with lower serum liver enzyme levels, indicating reduced liver damage.
Conclusions:
- The immunosuppressants AZA, CsA, FK506, and RPM effectively reduce neutrophil infiltration in the liver.
- These agents attenuate liver ischemia/reperfusion injury, suggesting a therapeutic role in managing such conditions.