[Changes in phospholipase A2 activity and lipid peroxidation in endotoxicosis during experimental peritonitis].
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Biomedical subjects
Publications and source records attributed to T V Tarasova.
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The chronic experiments on dogs with a peritonitis model showed that drugs possessing antioxidant properties (vitamin E, dimephosphon, xymedone) are capable of decreasing the inflammatory phenomena in abdominal cavity and decreasing the expression of endogenous intoxication, as manifested by a decrease in the plasma toxicity and the content of average-molecular-weight peptides and lipid peroxidation products. The most pronounced positive effect was observed for xymedone. A certain correlation between the effects of antioxidants upon endotoxicosis and free-radical lipid peroxidation reactions was established. This result suggests the therapeutic effect of antioxidants used for the treatment of peritonitis is related to their membrane-stabilizing ability.
The chronic experiments on mongrel dogs with a model pancreatitis showed that mexidol decreases manifestations of the inflammatory process. The treatment with mexidol led to a decrease in the degree of lipid transformations in the initial stage of pancreatitis development, with normaliation of the lipid metabolism according to the liver and blood plasma characteristics. The membranoprotector effect of mexidol, manifested in normalization of the lipid spectrum, is probably related to inhibition of the lipid peroxidation (LPO) process and to a decrease in the activity of phospholipase A2. The correlation between lipid metabolism, LPO, and phospholipase A2 activity in the tissues studied indicates that the therapeutic effect of mexidol in animals with pancreatitis is based on the cytoprotector activity of the drug.
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