Protective action of carnosine and organic lithium salts in case of ethanol-induced oxidative damage of proteins and lipids of blood plasma in healthy persons and alcoholic patients

Abstract

Organic lithium salts containing anionic components (succinate, fumarate, pyruvate and antioxidant ascorbate) were tested for protection of blood plasma proteins and lipids against ethanol-induced oxidation in vitro. We used normothymic lithium carbonate and well-known antioxidant dipeptide carnosine (b-alanyl-L-histidine) as the reference drugs. The oxidized proteins and lipids were determined by the level of carbonylated proteins (CP) and TBA-reactive products (TBA-RP), respectively. In alcoholic patients the level of oxidized proteins and lipids was higher than in healthy persons. Incubation of blood with ethanol resulted in an increase in oxidized proteins and lipids in blood plasma of healthy persons but had no influence on the level of CP and TBA-RP in blood plasma of alcoholic patients. Lithium carbonate, lithium ascorbate, and lithium succinate exhibited protective action against ethanol-induced oxidation of biomolecules of blood plasma of healthy people. These effects were comparable with carnosine action. The studied compounds had no effect on the level of CP and TBA-RP of blood plasma of alcoholic patients.

The Effect of Lithium Salt with Ascorbic Acid on the Antioxidant Status and Productivity of Gestating Sows

“…Antioxidant properties of lithium salts in biological systems were evaluated by their outcome in oxidative stress marker presence, namely protein and lipid oxidative modification products in blood plasma after blood incubation with 85 mM (0.5%) alcohol in vitro. The final concentration of all compounds in the tests comprised 1.2 mmol/L equivalent to lithium ions, given that the concentration corresponds to the therapeutic lithium concentration in patients’ blood during mental diseases treatment, which allows us to extrapolate lithium effects found in vitro to their effects in vivo [ 7 ]. As it is known that lithium salts also have an expressed systematic effect on affection and are able to normalize it, the ability of lithium salts to protect biomolecules from oxidative damage found as a result of the present research allows us to provide evidence regarding the possibility of these compounds’ usage in the intensive industrial pig-breeding cycle.…”