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- W2020178430 endingPage "1669" @default.
- W2020178430 startingPage "1657" @default.
- W2020178430 abstract "Reactive oxygen species (ROS) play an integral role in the pathogenesis of most diseases. This work presents the design and synthesis of fourteen new diiodoquinazolinone derivatives bearing benzenesulfonamide moiety with variable acetamide tail and evaluation of their ability to activate nuclear factor erythroid 2-related factor 2 (Nrf2) using its classical target NAD(P)H: quinone oxidoreductase 1 (NQO1) in Hepa1c1c7 murine hepatoma cells. The N-(2-chloropyridin-3-yl)-2-((6,8-diiodo-4-oxo-3-(4-sulfamoylphenyl)-3,4-dihydroquinazolin-2-yl)thio) acetamide 17 was the most potent NQO1 inducer (CD = 25 µM) with free radical scavenging activity (IC50 = 28 µM) and in vivo median lethal dose (LD50) of 500 mg/Kg. The possible radioprotective activity of compound 17 was evaluated in (7 Gy) irradiated mice. Compound 17 showed a reduction in radiation induced oxidative stress as evidenced by the lower levels of ROS, malondialdehyde (MDA) and NQO1 in liver tissues. Moreover, compound 17 showed improvement in the complete blood count (CBC) of irradiated mice and decreased mortality over 30 days following irradiation. Additionally, docking studies inside the Nrf2-binding site of Kelch-like ECH associated protein 1 (Keap1), the main negative regulator of Nrf2, confirmed that 17 revealed the same interactions with the key amino acids as those of the co-crystallized ligand. This study identifies 17 as a novel antioxidant that protects against the harmful effect of radiation." @default.
- W2020178430 created "2016-06-24" @default.
- W2020178430 creator A5003965204 @default.
- W2020178430 creator A5079424977 @default.
- W2020178430 date "1992-04-01" @default.
- W2020178430 modified "2023-10-16" @default.
- W2020178430 title "DT-diaphorase and cancer chemotherapy" @default.
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- W2020178430 doi "https://doi.org/10.1016/0006-2952(92)90694-e" @default.
- W2020178430 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/1575764" @default.
- W2020178430 hasPublicationYear "1992" @default.
- W2020178430 type Work @default.