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    Nootkatone confers hepatoprotective and anti-fibrotic actions in amurine model of liver fibrosis by suppressing oxidative stress, inflammation, and apoptosis

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    204-2017.52 Kamal Hassan Kader (1.163Mb)
    Date
    2017-11-20
    Author
    Kader, Kamal Hassan
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    Abstract
    Abstract: In this study, the hepatoprotective and anti-fibrotic actions of nootkatone (NTK) were investigated using carbon tetrachloride (CCl4)-induced liver fibrosis in mice. CCl4 administration elevated serum aspartate and alanine transaminases levels, respectively. In addition, CCl4 produced hepatic oxidative and nitrative stress, characterized by diminished hemeoxygenase-1 expression, antioxidant defenses, and accumulation of 4-hydroxynonenal and 3-nitrotyrosine. Furthermore, CCl4 administration evoked profound expression of pro-inflammatory cytokine expressions such as tumor necrosis factor-𝛼, monocyte chemoattractant protein-1, and interleukin-1𝛽 in hepatic tissues, which corroborated with nuclear factor 𝜅B activation. Additionally, CCl4-treated animals exhibited higher apoptosis, characterized by increased caspase 3 activity,DNA fragmentation, and poly (ADP-ribose) polymerase activation. Moreover, histological and biochemical investigations revealed marked fibrosis in the livers of CCl4-administered animals. However, NTK treatment mitigated CCl4-induced phenotypic changes. In conclusion, our findings suggest that NTK exerts hepatoprotective and anti-fibrotic actions by suppressing oxidative stress, inflammation, and apoptosis.
    URI
    https://repository.mbru.ac.ae/handle/1/244
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