Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/4126
Title: Allopurinol provides long-term protection for experimentally induced testicular torsion in a rabbit model
Authors: Kehinde, E.O.
Anim, J.T.
Mojiminiyi, O.A.
Al-Awadi, F.
Shihab-Eldeen, A.
Omu, A.E.
Fatinikun, T.
Prasad, A.
Abraham, M.
Keywords: Antioxidants
Long-term results
Testicular torsion
Treatment
Issue Date: Jul-2005
Publisher: BJU International
Citation: Kehinde, E. O., Anim, J. T., Mojiminiyi, O. A., Al-Awadi, F., Shihab-Eldeen, A., Omu, A. E., . . . Abraham, M. (2005). Allopurinol provides long-term protection for experimentally induced testicular torsion in a rabbit model. BJU International, 96(1), 175-180.
Abstract: OBJECTIVE: To assess the effect of five antioxidants on exocrine function of rabbit testes retained in situ for 24 h and 3 months after experimental torsion. MATERIALS AND METHODS: The left testes of peripubertal rabbits were clamped for 60 min, after which the clamps were removed and the testes allowed to reperfuse. The right testes served as interna controls. There were eight rabbits in each of the following experimental groups: (a) sham; (b) 60-min ischaemia followed by reperfusion; (c) 60-min ischaemia followed by left orchidectomy. In five further groups, rabbits were exposed to 60-min ischaemia followed by reperfusion, but received one of the following antioxidants before reperfusion: acetyl salicylic acid, ascorbic acid, allopurinol, quercetin or superoxide dismutase. Both testes were excised at 24 h or 3 months. The degree of lipid peroxidation.a measure of free radical damage, was assessed in testicular tissue homogenates by measuring the tissue evels of malondialdehyde (MDA). The Johnsen score was used to assess the morphologica damage at 24 h and 3 months for each group. RESULTS: At 3 months twisted viable testes allowed to reperfuse had higher MDA levels than controls; the left testes of rabbits treated with allopurinol had significantly lower MDA levels than untreated rabbitsand rabbitsgiven other antioxidants. Rabbits given quercetin, ascorbic acid or superoxide dismutase had lower (but not significantly) left testicular MDA levels than untreated rabbits, while rabbits given acetyl salicylic acid had even higher levels. Allopurinol-treated rabbits had a Johnsen score of > 7.6 and those given other antioxidants had scores of <7.6 at 3 months. CONCLUSION: The twisted viable testis treated by orchidopexy contains high free radical levels at 3 months. Of the antioxidants studied, only allopurinol had a beneficial long-term effect, by significantly reducing testicular MDA levels at 3 months.
URI: http://hdl.handle.net/123456789/4126
ISSN: 14644096
Appears in Collections:Department of Pathology 9

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