Plasma Glutathione Peroxidase (GPX1) Levels and Oxidative Stress in Gallstone Patients Operated with Two Different Cholecystectomy Techniques: A Randomized Study with Special Reference to Cancer Patients.

Background/aim: The plasma glutathione peroxidase (GPX1) levels in gallstone patients operated with laparoscopic cholecystectomy (LC) or minicholecystectomy (MC) versus cancer patients is unknown.
Patients and Methods: Initially, 114 patients with symptomatic gallstone disease were randomized into LC (n=53) or MC (n=61) groups. Plasma levels of C-reactive protein (hs-CRP) and the oxidative stress marker GPX1 were measured at three time points; before (PRE), immediately after (POP1) and 6 hours after operation (POP2). The end-point of our study was to determine a correlation between the plasma hs-CRP and GPX1 levels in the LC and MC patients versus cancer patients.
Results: The plasma GPX1 levels preoperatively and following surgery in the LC and MC patients versus cancer patients were quite similar (p=0.509, p=0.578, p=0.882, respectively). The patients with inflammation of the gallbladder wall (IGW) versus no-IGW had significantly higher plasma GPX median (interquartile range) levels preoperatively (11.5; 6.2-17.4 vs. 8.0; 5.6-14.5, p=0.033) and the GPX values following surgery (POP1, 11.4; 7.8-14.7 versus 7.3; 4.4-11.0, p=0.019 and POP2, 11.5; 7.1-16.2 versus 9.4; 4.2-13.1, p=0.027). The IGW in patients with LC and MC groups combined, correlated significantly to the plasma CRP levels preoperatively (r=0.280, p=0.005) and the CRP values following surgery (POP1, r=0.295, p=0.003 and POP2, r=0.338, p=0.001) and the GPX1 values postoperatively (POP1, r=0.319, p=0.001 and POP2, r=0.243, p=0.026) and to the length of the skin incision (r=0.248, p=0.009).
Conclusion: The plasma GPX1 levels preoperatively and following surgery in the LC and MC patients versus cancer patients were quite similar. However, the inflammation of the gallbladder wall (IGW) correlated significantly with plasma GPX1 and hs-CRP values suggesting that inflammation and oxidative stress are related.
(Copyright© 2017, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved.)