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Effects of Pycnogenol on cisplatin-induced optic nerve injury: an experimental studyIcel, ErelUçak, TurgayAgcayazi, BurcuKarakurt, YücelYilmaz, HayatiKeskin Çimen, FerdaSüleyman, Haliscisplatinmalondialdehydeoptic nerve damageoxidative stressPycnogenolAnimalsAntineoplastic AgentsAntioxidantsFlavonoidsInflammationLipid PeroxidationMaleOptic NerveOptic Nerve InjuriesPlant ExtractsRatsRats, WistarTumor Necrosis Factor-alphaglutathioneimmunoglobulin enhancer binding proteinmalonaldehydetumor necrosis factorantineoplastic agentantioxidantflavonoidplant extractpycnogenolsanimal experimentanimal modelanimal tissueAim: To determine the effects of Pycnogenol on cisplatin-induced optic nerve damage. Material and method: Totally 18 albino Wistar male rats were assigned into three groups, with six rats in each group as follows: healthy controls (HC group), only cisplatin (2.5 mg/kg) administered group (CIS group) and Pycnogenol (40 mg/kg) + cisplatin (2.5 mg/kg) administered group (PYC group). We analyzed the levels of malondialdehyde (MDA) as a marker of lipid peroxidation and oxidative stress, total glutathione (tGSH) as a marker of antioxidant status, nuclear factor-kappa B (NF-κB) and tumor necrosis factor alpha (TNF-α) as inflammatory markers, total oxidative status (TOS) and total antioxidant status (TAS) on eye tissue together with histopathological evaluation of optic nerve in an experimental model. Results: In CIS group MDA, TOS, TNF-α and NF-κB levels were statistically significantly higher (p < 0.001) than HC group while tGSH and TAS levels were significantly lower (p < 0.001). On the other hand, in PYC group MDA, TOS, TNF-α and NF-κB levels were statistically significantly lower (p < 0.001) than CIS group while tGSH and TAS levels were significantly higher (p < 0.001). Conclusion: Pycnogenol pretreatment was highly effective in preventing augmentation of cisplatin-induced oxidative stress and inflammation in eye tissue. © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.Taylor and Francis Ltd2018Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/14503https://doi.org/10.1080/15569527.2018.14952241556-9527enCutaneous and Ocular Toxicologyinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/14503