Eid A, Ghaleb SS, Zaki A, Ibrahim M, Farghali AA, Ali LE, Abdelgawad MA, Ghoneim MM, Al-Serwi RH, Hassan RM, and Ahmad M
Background : Titanium dioxide nanoparticles (TiO 2 NPs) are widely utilized and consumed mainly as food additives. Oxidative stress is considered to be the basic effect of TiO 2 NPs through biological interactions. Hesperidin (HSP) is a bioflavonoid (flavanone glycoside) with lipid-lowering, inflammation, oxidative stress suppression, antihypertensive, cancer-fighting, and antiedema effects. Objective : This study was to investigate the possible protective influences of HSP of subchronic oral TiO 2 NP exposure on the brains of rats, including neurotransmitters, oxidative stress/antioxidant parameters, inflammatory markers, and histological changes in the brains of adult male albino rats. Methodology: The experiment was executed on 80 albino rats. The animals were randomly divided into 4 equal groups. The first group served as a control; the second group was treated with oral doses of HSP (100 mg/kg Bw daily); the third group received TiO 2 NPs (200 mg/kg Bw orally daily); and the fourth group was treated with TiO 2 NPs and an oral dose of HSP daily for 8 weeks. Blood samples were obtained for biochemical analysis. Neurotransmitters, oxidative stress biomarker levels, and inflammatory markers were measured in brain homogenates. Histological examination of the brain was performed through H&E staining. Results : Coadministration of hesperidin with TiO 2 NPs orally for 8 weeks decreased the levels of MDA, TNF-α, AChE, and dopamine in brain homogenates, which were increased in the TiO 2 NP group. It increased the other oxidative biomarkers (SOD, CAT, and GPx) and Nrf-2 expression levels. Brain histological sections of the TiO 2 NP-treated group show degeneration, necrosis, congestion, and inflammatory cell infiltration that decreased markedly in the coadministration of hesperidin with the TiO 2 NP group. Conclusion: Hesperidin cotreatment offers significant protection against TiO 2 NP-induced oxidative stress and biochemical and histological alteration in the brain., Competing Interests: The authors declare no competing financial interest., (© 2023 The Authors. Published by American Chemical Society.)