Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: 2,4,6-trinitrotoluene

Sortuj według:

Ogranicz wyniki do:

Enzymatic redox reactions of the explosive 4,6-dinitrobenzofuroxan [DNBF]: implications for its toxic action

100%

Nemeikaite-Ceniene A., Sarlauskas J., Miseviciene L., Anusevicius Z., Maroziene A., Cenas N.

Acta Biochimica Polonica

2004

tom 51

nr 4

With an aim to understand the toxicity mechanisms of the explosive 4,6-dinitro- benzofuroxan (DNBF), we studied its single-electron reduction by NADPH:cyto- chrome 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.

Ograniczanie wyników

1 Acta Biochimica Polonica

1 Anusevicius Z.

1 Cenas N.

1 Maroziene A.

1 Miseviciene L.

1 Nemeikaite-Ceniene A.

1 Sarlauskas J.

1 2004

Wyniki wyszukiwania

Enzymatic redox reactions of the explosive 4,6-dinitrobenzofuroxan [DNBF]: implications for its toxic action