Changes of serum adhesion molecules and cytokines in post-ERCP pancreatitis: adhesion molecules and cytokines in acute pancreatitis.

Objectives: To assess the early changes of soluble IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12, TNF-α, TNF-β, IL-17A, IL-22, soluble (s) P-Selectin, sE-Selectin and sICAM-1 in post-ERCP pancreatitis (PEP).

Methods: Single center, prospective study of 318 ERCP procedures. Serum samples were acquired from all patients prior to ERCP, 6 hours and 24 hours after the procedure. For every PEP case, another patient was chosen as a control, matched for gender, age and time period in which ERCP took place.

Results: Totally, 28 cases and 28 controls were studied. Except for significantly higher IL-1b levels in cases at baseline, no significant differences were observed between cases and controls after Bonferroni corrections. An increase in IL-6 was noted between baseline and 6 h in cases alone (p=0.016). There was a significant fall in sP-selectin levels at 6 and 24 hours compared to baseline in all patients (corrected p=0.008 and 0.016 for cases and 0.016 and 0.048 for controls respectively). An increase of sE-selectin in cases was observed between 6 and 24 hours post-ERCP (corrected p=0.03).

Conclusions: Soluble forms of cytokines and adhesion molecules studied seem not to play a major role in PEP.