[Oxidative stress in platelets at an oncopathology].

To determine the biochemical disorders in the blood coagulation mechanism associated with oxidative stress parameters of the antioxidant status were examined in platelets of 57 colorectal cancer patients, (including 21 patients before and after surgery), and 40 healthy individuals. We determined the total content of nitric oxide (NOx), levels of superoxide dismutase (Cu/ZnSOD), glutathione and malondialdehyde (MDA). Before treatment, we observed the changes in the antioxidant defense system of platelets, which did not depend on the prevalence of malignancy: elevated levels of SOD by 16% (p<0.

[Potential marker of the pharmacodynamic effect of high doses of methotrexate--homocysteine].

High-dose methotrexate blocks the metabolic pathways of conversion of homocysteine to methionine. As a result, homocysteine (hcy) accumulates in the blood. The aim of this study was to determine the relationship between changes in concentrations of hcy, mtx, and other criteria of toxicity in the key hours of therapeutic drug monitoring of mtx, as well as identifying the possibility of using hcy as a marker of toxicity and effectiveness of high-dose mtx therapy.

Effects of afobazole on the content of neurotransmitter amino acids in the striatum in global transient ischemia.

Anxiolytic agent afobazole (10 mg/kg intraperitoneally) 24 h after ischemia restores impaired balance of excitatory and inhibitory amino acids in the striatum of mongrel rats, normalizes their content to control levels, and activates endogenous taurine-dependent system of neuroprotection.