Role of maslinic acid in ischemia/reperfusion-induced testicular injury in rats

BACKGROUND: The pathophysiology of testicular ischemia-reperfusion is characterized by a marked surge in reactive oxygen species. The oxidative attack by reactive oxygen species on cellular constituents, including DNA, proteins and lipids, induces damage in spermatogenic cells. A notable active ingredient found within the Olea europaea, hawthorn, and other medicinal plants is maslinic acid, which is prominent for its oxidation inhibition effect. To determine whether maslinic acid safeguards testicular sperm generation following ischemia-reperfusion injury, an experimental study was performed using a rat model.
METHODS: In this investigation, male rats were categorized into three separate groups: Group 1 served as control, Group 2 underwent testicular ischemia-reperfusion, and Group 3 received maslinic acid following ischemia-reperfusion injury. Ischemia was initiated in the rat left testis via a 2-hour torsion procedure, after which reperfusion was achieved through surgical detorsion. The maslinic acid-treated group received an intraperitoneal administration of the compound simultaneously with the start of detorsion procedure. Following detorsion, a left orchiectomy was conducted at either the 4-hour or the 3-month interval. To comprehensively assess testicular oxidative stress and function, we measured key indicators: malondialdehyde concentration (reflecting reactive oxygen species levels), the activities of superoxide dismutase and catalase (components of the cellular antioxidant system), and overall spermatogenic efficacy, using biochemical assays alongside histological evaluation with hematoxylin-eosin staining.
RESULTS: Testicular ischemia-reperfusion profoundly elevated malondialdehyde concentration while simultaneously suppressing key antioxidant defenses (superoxide dismutase and catalase) and compromising testicular spermatogenic performance (p < 0.001). Despite the damage induced by testicular ischemia-reperfusion, maslinic acid intervention yielded a partial restorative effect on these markers (p < 0.01).
CONCLUSION: In summary, ischemia-reperfusion injury in testicular tissue is counteracted by maslinic acid via augmentation of superoxide dismutase and catalase activities along with diminishment of reactive oxygen species.