- Tytuł:
- Enzymatic redox reactions of the explosive 4,6-dinitrobenzofuroxan (DNBF): implications for its toxic action.
- Autorzy:
-
Nemeikaitė-Čėnienė, Aušra
Šarlauskas, Jonas
Misevièienė, Lina
Anusevièius, Žilvinas
Marozienė, Audronė
Čėnas, Narimantas - Powiązania:
- https://bibliotekanauki.pl/articles/1041528.pdf
- Data publikacji:
- 2004
- Wydawca:
- Polskie Towarzystwo Biochemiczne
- Tematy:
-
cytotoxicity
nitroaromatic explosives
oxidative stress - Opis:
- With an aim to understand the toxicity mechanisms of the explosive 4,6-dinitro- benzofuroxan (DNBF), we studied its single-electron reduction by NADPH:cytochrome P450 reductase and ferredoxin:NADP+ reductase, and two- electron reduction by DT-diaphorase and Enterobacter cloacae nitroreductase. The enzymatic reactivities of DNBF and another explosive 2,4,6-trinitrotoluene (TNT) were similar, except for the much lower reactivity of DNBF towards nitroreductase. DNBF was less cytotoxic in FLK cells than TNT. However, their action shared the same mechanisms, oxidative stress and activation by DT-diaphorase. The lower cytotoxicity of DNBF may be explained by the negative electrostatic charge of its adduct with water which may impede cellular membrane penetration, and by the formation of its less reactive adducts with intracellular reduced glutathione.
- Źródło:
-
Acta Biochimica Polonica; 2004, 51, 4; 1081-1086
0001-527X - Pojawia się w:
- Acta Biochimica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł