The influence of detorsion of adnexal torsion on melondialdehyde, peroxidase catalase, and catalase of ovarian tissue in rabbits

Objective To observe the influence of reperfusion after adnexal torsion (AT) on malondialdehyde (MDA), glutathione peroxidase catalase (GSH-Px) and catalase (CAT) contents of ovarian tissue in rabbits. Methods Forty female Japanese long-eared white rabbits were randomly divided into study group (n=32) and control group (n=8). The left adnexa of rabbits in the study group was clockwise twisted three laps, and then fixed on the left abdominal walls. Adnexal detorsion was then done 24 hours after adnexal torsion in the study group, and then the rabbits were divided into 4 groups (8 each). Both ovaries of each group were removed 24h, 48h, 72h and 96h, respectively, after reperfusion. The rabbits in the control group received sham-operation and both ovaries were removed 96h later. The removed left ovaries were used for biochemical detection of GSH-Px, CAT and MDA. All the right ovaries were used as experimental internal-control. Results The activity of GSH-Px declined significantly 24h to 72h after adnexal detorsion (P0.05). The activity of CAT declined significantly 24h and 48h after adnexal detorsion (P0.05). Conclusions Detorsion after adnexal torsion can affect the degree of oxidative stress injury in rabbits' ovaries as shown by the changes in the activities of GSH-Px, CAT and MDA. With the elongation of detorsion time, ovarian injury will be gradually alleviated.