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Sodium nitrite, a nitric oxide (NO) donor in the acid pH, has been found to mitigate lipid peroxidation in rat gastric mucosa, and it elevated both Cu, Zn- and Mn-forms of the superoxide dismutase in this tissue. Putrescine, a simple p oly amin e of anti-oxidant properties has been shown to normalize lipid peroxidation levels in nitrite-treated animals.
In this study, the total antioxidant status (TAS) was assayed in the blood serum of rats pretreated per os with either N-nitrosodiethylamine (NDEA) (0.1 mg/kg b.w./day) or N-methyl-N-nitrosourea (NMU) (0.1 mg/kg b.w./day) for 30 days. The animals were also dosed per os with spermidine (SPR) (10 mg/kg b.w./day) for a first 21 day period, and Nto-nitro-L-arginine methyl ester (L-NAME) (10 mg/kg b.w...
Studies were carried out to elucidate the anti-oxidative effect(s) of putrescine (10 mg/kg b.w./day) in rats treated per os with either sodium nitrite (10 mg/kg b.w./day) or normal saline (control) for 14 days. The putrescine was given to rats for 7 days only (days 7-14) and it was introduced 3-4 hrs after nitrite or saline dosage. Sodium nitrite increased thiobarbituric acid reactive substances (TBARS)...
Studies were carried out to examine the anti-oxidative activity of nitric oxide synthase (NOS) inhibitors including L-Nw-nitro-L-arginine methyl ester (L-NAME) and spermidine in rats pretreated per os with N-nitrosodiethylamine (NDEA) (0.1 mg/kg b.w.) daily for 30 days. Both L-NAME and/or sapermidine were gavaged to animals in a daily dosage of 10 mg/kg body weight, however, the polyamine was applied...
Studies were carried out to examine the anti-oxidative effect(s) of oral coenzyme Q10 supplementation (10 mg/kg b.w./day) in rats treated per os with either sodium nitrite (10 mg/kg b.w./day) or saline (control) for 14 days. Results showed that sodium nitrite increases thiobarbituric-acid reactive substances (TBARS in rat small intestinal mucosa and liver, and the agent did not have any effect(s)...
B6C3F1 mice were treated per os with either normal saline or N-nitrosodiethylamine (NDEA) (0.01, 0.1, 1.0 or 5.0 mg/kg body weight) daily for 21 days. On day 22nd of the experiment, the animals were whole-body g-irradiated (10 Gy) and examined at 3.5 days post-radiation exposure. Pretreatment of mice with NDEA at the lowest dosage (0.01 and 0.1 mg/kg) increased thiobarbituric acid-reactive substances...
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