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

Keywords: adnexa uteri , malondialdehyde , glutathione peroxidase catalase , catalase

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Abstract:

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 (P<0.01), and no significant difference was found when compared with that of control group 96h later (P>0.05). The activity of CAT declined significantly 24h and 48h after adnexal detorsion (P<0.01), then it began to increase after 72h, and it became significantly higher in 96h group as compared with that in control group (P<0.05). MDA content in study groups increased obviously 24h and 48h after adnexal detorsion (P<0.01), and it declined 72h later albeit still significantly higher than that of control group (P<0.01), and then it continuously declined to reach the level of control group 96h later (P>0.05). 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.

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