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    Gradual detorsion of torsioned rat testis attenuates ischemia reperfusion injury
    (W B Saunders Co-Elsevier Inc, 2008) Akcora, Bulent; Altug, Muhammed E.; Balci, Ali; Hakverdi, Sibel; Yonden, Zafer; Akbas, Ali; Ozturk, Atakan
    Aim: This study was designed to investigate effect of gradual detorsion on testicular ischemia reperfusion injury. Materials and Methods: A total of 21 male rats were divided into 3 groups, each containing 7 rats. Torsion was created by rotating the left testis 720 degrees in a clockwise direction. Group I underwent sham operation. Group 2 (sudden detorsion) served as a torsion/detorsion group, receiving 2 hours torsion and 2 hours detorsion. In group 3, 360 degrees detorsion was done for 20 minutes after 720 degrees torsion for 2 hours. Then, testis was done full detorsion for 100 minutes. At the end of the experiments (fourth hour), left orchiectomy was performed to measure the tissue levels of malondialdehyde (MDA), superoxide dismutase, and glutathione peroxidase and to perform histologic examination in testes. Results: The MDA levels of testis tissues were significantly increased in the sudden detorsion group as compared with the sham group. We found decrease of the MIDA level in gradual detorsion group, but it was not a statistically significant amount. Significant decrease was found in the superoxide dismutase and glutathione peroxidase activities in the sudden detorsion group as compared with the sham and gradual detorsion groups. Histologic examinations were in accordance with the testicular tissue MDA levels. Conclusion: In the light of our biochemical and histopathologic findings, we can say that gradual detorsion has a trend to decrease the degree of testicular reperfusion injury in the rat torsion/detorsion model. (C) 2008 Elsevier Inc. All rights reserved.
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    Protective effect of Diospyros kaki L. leaves extract against oxidative damage and inflammation in the testicular ischemia-reperfusion model in rats
    (Natl Inst Science Communication-Niscair, 2023) Yurtal, Ziya; Kulualp, Kadri; Oezkan, Hueseyin; Kutlu, Tuncer; Alakus, Halil; Aslan, Abdullah; Altug, Muhammed E.
    The Oriental persimmon, Diospyros kaki L., native of China, with its bioactive compounds from leaves, flavonoids and polyphenols in particular, possess antibacterial, antiallergic, anti-inflammatory, neuroprotective and antihypertensive properties. Though, the anti-inflammatory and antioxidative effects of the D. kaki leaves have beneficial effects in I/R injury in the brain, the same has not been investigated in testicular I/R injury until now. Hence, in the present study, we investigated its leaf extract against oxidative damage and inflammation in the testicular ischemia-reperfusion model. Thirty-two male rats were randomly and equally divided into four groups. While saline (SF) was given to the control and ischemia/reperfusion (I/R) groups for 5 days, Diospyros kaki (DK) and I/R+DK were given 200 mg/kg of DK leaf extract. Afterwards, left orchiectomy was performed in control and DK, and testicular torsion was performed in I/R and I/R+DK for 2 hours. All rats were sacrificed 24 hours after procedures and samples were collected. Compared to the control, I/R had high MDA levels, low GSH and GSH-Px levels; compared to the I/R, MDA levels of the I/R+DK were lower, and the GSH and GSH-Px levels were higher. In I/R, the presence of congestion and hemorrhage were determined and the deterioration in seminiferous tubule structure and spermatogenesis were less in the I/R+DK. TNF-alpha, COX-2, BCL-2, and BAX genes expressions were significantly lower in the I/R+DK group. TNF-alpha and COX-2 proteins were higher in I/R and I/R+DK groups, while NRF2 was higher in I/R+DK. These results show that DK leaves extract has crucial protective effect against oxidative damage and inflammation in the I/R model of rats.