Drug Design, Development and Therapy (Mar 2016)
Protective effects of honokiol on ischemia/reperfusion injury of rat ovary: an experimental study
Abstract
Senem Yaman Tunc,1 Elif Agacayak,1 Neval Yaman Goruk,2 Mehmet Sait Icen,1 Abdulkadir Turgut,1 Ulas Alabalik,3 Cihan Togrul,4 Cenap Ekinci,5 Aysun Ekinci,6 Talip Gul1 1Department of Obstetrics and Gynecology, School of Medicine, Dicle University, 2Department of Obstetrics and Gynecology, Diyarbakir Memorial Hospital, 3Department of Pathology, School of Medicine, Dicle University, Diyarbakir, 4Department of Obstetrics and Gynecology, School of Medicine, Hitit University, Corum, 5Department of Histology and Embryology, 6Department of Medical Biochemistry, School of Medicine, Dicle University, Diyarbakir, Turkey Aim: The purpose of this study was to investigate the protective effect of honokiol on experimental ischemia/reperfusion injury of rat ovary.Materials and methods: A total of 40 female Wistar albino rats were used in this study. The rats were divided into five groups as follows: sham (Group I), torsion (Group II), torsion + detorsion (Group III), torsion + detorsion + saline (Group IV), and torsion + detorsion + honokiol (Group V). Bilateral adnexa in all the rats except for those in the sham group were exposed to torsion for 3 hours. The rats in Group IV were administered saline, whereas the rats in Group V were administered honokiol by intraperitoneal route 30 minutes before detorsion. Tissue and plasma concentrations of malondialdehyde and nitric oxide were determined. Ovarian tissue was histologically evaluated. Data analyses were performed by means of Kruskal–Wallis test and Mann–Whitney U-test (Bonferroni correction) in SPSS 15.0 (Statistical Package for Social Sciences; SPSS Inc., Chicago, IL, USA).Results: The torsion and detorsion groups had higher scores in vascular congestion, hemorrhage, and inflammatory cell infiltration compared with the sham group (P<0.005). In addition, total histopathological scores were significantly higher in the torsion and detorsion groups compared with the sham group (P<0.005). A significant reduction was observed in hemorrhage, inflammatory cell infiltration, and cellular degeneration scores, of all histopathological scores, in the honokiol group (P<0.005). Ovarian tissue concentrations of malondialdehyde were significantly higher in the torsion and detorsion groups compared with the sham and honokiol groups (P<0.005). Ovarian tissue concentrations of nitric oxide, on the other hand, were significantly higher in the torsion group compared with the sham, saline, and honokiol groups (P<0.005).Conclusion: Honokiol has a beneficial effect on ovarian torsion-related ischemia/reperfusion injury. Keywords: ovary, ischemia/reperfusion injury, honokiol, malondialdehyde, nitric oxide
