The plasma 8-OHdG levels and oxidative stress following cholecystectomy: a randomised multicentre study of patients with minilaparotomy cholecystectomy versus laparoscopic cholecystectomy.

Objective: The aim of the study was to evaluate the role of 8-OHdG (8-hydroxy-2'-deoxyguanosine) detecting oxidative stress response following cholecystectomy in a randomised multicentre study of patients with minilaparotomy cholecystectomy (MC) versus laparoscopic cholecystectomy (LC).

Methods: Initially, 106 patients with non-complicated symptomatic gallstone disease were randomised into MC (n = 56) or LC (n = 50) groups. Plasma levels of the oxidative stress marker 8-OHdG measured at three time points; before (PRE), immediately after (POP1) and 6 h after operation (POP2).

Results: The demographic variables and the surgical data were similar in the study groups. The plasma oxidative stress marker 8-OHdG concentrations following surgery in the MC versus LC patients were quite similar. There was no significant correlation between the individual values of the11-point numeric rating pain scale (NRS) versus the plasma 8-OHdG post-operatively in the MC and LC patients. However, there was a statistically significant correlation between the individual values of the plasma 8-OHdG (PRE) versus IL-10 (PRE) for the MC and LC patients (r = 0.214, p = 0.037). There was also a statistically significant correlation between the individual values of the plasma 8-OHdG (POP2) versus IL-1β (POP2) for the MC and LC patients (r = 0.25, p = 0.01).

Conclusion: Our results suggest that the oxidative stress marker 8-OHdG concentrations following surgery in MC versus LC patients were quite similar. A new finding with possible clinical relevance is a correlation between the individual plasma values of the 8-OHdG versus anti-inflammatory interleukin IL-10 and 8-OHdG versus IL-1β (proinflammatory) in the MC and LC patients suggesting that inflammation and oxidative stress are related.