Biochemical modulation of cell energy by 2-deoxyglucose and malonate in 7,12-dimethylbenz(a)anthracene-induced carcinogenesis in rats.

Abstract:

:The goal of this study was to explore the impact of 2-deoxglucose or malonate individually or in combination on the level of cell energy (adenosine-5'-triphosphate) and oxidative stress in 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary proliferation in rats. A total of 60 adult female Sprague Dawley rats were randomly divided into five groups (12 rats each): group I serves as the control group. Rats in groups (II-V) were administrated intragastrically a single dose of 50 mg/kg body weight (bw) of DMBA. A day after DMBA administration, rats in group III were injected intraperitoneally (ip) with 100 mg 2-deoxyglucose (2-DG)/kg bw daily. Rats in group IV were injected ip with 10 mg sodium malonate/kg bw daily. Rats in group V were injected ip with 100 mg 2-DG/kg bw and 10 mg sodium malonate/kg bw (treatment for 90 days). The results obtained showed that DMBA induced oxidative stress by decreasing the activities of glutathione reductase (GRase) and superoxide dismutase (SOD), glutathione peroxidase (GPx) and elevating the levels of malondialdehyde (MDA) and nitric oxide (NO) in mammary tissues when compared with control. The combined treatment protected against the previous deleterious changes by a significant elevation in the activities of GRase and SOD, GPx and lowering the levels of MDA and NO more potentially when compared with individual treatment. Apoptosis, as indicated by a significant release of cytochrome c from mitochondria into the cytosol, observed in DMBA-injected rats was positively significantly correlated with the elevation of the level of NO. These data explained the possible additive effect of 2-DG and malonate by depleting the cell energy by their protective effects against the earlier stages of carcinogenesis.

journal_name

Toxicol Ind Health

authors

Moselhy SS,Kumosani TA,Al-Malki AL,Naif AA

doi

10.1177/0748233712472525

subject

Has Abstract

pub_date

2015-04-01 00:00:00

pages

343-50

issue

4

eissn

0748-2337

issn

1477-0393

pii

0748233712472525

journal_volume

31

pub_type

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