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Shanab, Obeid; Mostafa, Laila; Abdeen, Ahmed; Atia, Rania; Nassar, Ahmed Y; Youssef, Mohammed; Ibrahim, Samah F; Maher, Zainab M; Imbrea, Florin; Fericean, Liana; Ghareeb, Khaled; Hasan, Tabinda; Ghamry, Heba I; Atawia, Reem T; Sadeq, Omar; Abdelkader, Afaf
Ecotoxicology and environmental safety, 2024-Jan-15, Volume: 270Journal Article
N-nitrosodiethylamine (ND) is an extremely toxic unavoidable environmental contaminant. Copper -albumin (CuAB) complex, a newly developed Cu complex, showed antioxidant and anti-inflammatory potential. Hereby, we explored the plausible neuroprotective role of CuAB complex toward ND-evoked neurotoxicity in mice. Twenty-four male mice were sorted into 4 groups (6 mice each). Control group, mice were administered oral distilled water; and CuAB group, mice received CuAB complex at a dose of 817 µg/kg orally, three times weekly. In ND group, ND was given intraperitoneally (50 mg/kg body weight, once weekly for 6 w). CuAB+ND group, mice were administered a combination of CuAB and ND. The brain was quickly extracted upon completion of the experimental protocol for the evaluation of the oxidative/antioxidative markers, inflammatory cytokines, and histopathological examination. Oxidative stress was induced after ND exposure indicated by a reduction in GSH and SOD1 level, with increased MDA level. In addition, decreased expression of SOD1 proteins, Nrf2, and 5-HT mRNA expression levels were noticed. An apoptotic cascade has also been elicited, evidenced by overexpression of Cyt c, Cl. Casp 3. In addition, increased regulation of proinflammatory genes (TNF-α, IL-6, iNOS, Casp1, and NF-κB (p65/p50); besides, increment of protein expression of P-IKBα and reduced expression of IKBα. Pretreatment with CuAB complex significantly ameliorated ND neuronal damage. Our results recommend CuAB complex supplementation because it exerts neuroprotective effects against ND-induced toxicity.
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