Title : Arsenicals inhibit thioredoxin reductase in cultured rat hepatocytes.

Pub. Date : 2001 Mar

PMID : 11258980






8 Functional Relationships(s)
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Sentence
Compound Name
Protein Name
Organism
1 Thioredoxin reductase (TR), an NADPH-dependent flavoenzyme that catalyzes the reduction of many disulfide-containing substrates, plays an important role in the cellular response to oxidative stress. Disulfides peroxiredoxin 5 Rattus norvegicus
2 Thioredoxin reductase (TR), an NADPH-dependent flavoenzyme that catalyzes the reduction of many disulfide-containing substrates, plays an important role in the cellular response to oxidative stress. Disulfides peroxiredoxin 5 Rattus norvegicus
3 Because MAs(III) is produced in the biomethylation of As, it was postulated that the extent of inhibition of TR in cultured rat hepatocytes would correlate with the intracellular concentration of methyl As. Arsenic peroxiredoxin 5 Rattus norvegicus
4 Exposure of cultured hepatocytes to inorganic As(III) (iAs(III)), MAs(III), or aurothioglucose (ATG, a competitive inhibitor of TR activity) for 30 min caused a concentration-dependent reduction in TR activity. Aurothioglucose peroxiredoxin 5 Rattus norvegicus
5 Exposure of cultured hepatocytes to inorganic As(III) (iAs(III)), MAs(III), or aurothioglucose (ATG, a competitive inhibitor of TR activity) for 30 min caused a concentration-dependent reduction in TR activity. Aurothioglucose peroxiredoxin 5 Rattus norvegicus
6 Exposure of cultured hepatocytes to inorganic As(III) (iAs(III)), MAs(III), or aurothioglucose (ATG, a competitive inhibitor of TR activity) for 30 min caused a concentration-dependent reduction in TR activity. Aurothioglucose peroxiredoxin 5 Rattus norvegicus
7 After exposure for 3 h [when most MAs(III) has been converted to dimethyl As (DMAs)], TR activity in these cells had returned to control levels. dimethyl as peroxiredoxin 5 Rattus norvegicus
8 After exposure for 3 h [when most MAs(III) has been converted to dimethyl As (DMAs)], TR activity in these cells had returned to control levels. Dimethyl acetylsuccinate peroxiredoxin 5 Rattus norvegicus