[Molecular mechanisms of antioxidant action of dalargin on the liver in experimental cholestasis].

Changes of antioxidant activity of dalargin in the liver after naloxone (100 micrograms/kg) administration were examined in experiment on 144 rats with cholestasis. It was found that dalargin inhibited the activity of xanthine oxidase by 32-37% in different time periods after the injection. Dalargin and naloxone, when used in combination, had no effect on the enzyme activity.

[Features of general anesthesia and infusion-transfusion therapy in extensive surgery of the organs of the abdominal cavity].

The article discusses variants of infusion-transfusion therapy (ITT) in early stages of expanded operations on the abdominal organs attended by massive blood loss (2 to 4 BCV and more). Seventy-three patients were examined, they underwent resection of the liver (30), pancreatoduodenal resection (37), or removal of a retroperitoneal tumor (6 patients). On the basis of precise study of central and peripheral hemodynamics, acid-base equilibrium, and blood oxygen transport function the authors find it necessary to increase the volumes of ITT to 70-80% BCV in the first stage of the operation with a colloid/crystalloid ratio of 1:4.

[Effects of dalargin on some parameters of peroxidation of liver lipids in experimental animals].

The cholestasis and pancreatitis model was studied experimentally in 144 white rats. The influence of intraperitoneal injections of dalargin on the level of lipid peroxidation and on xanthine oxidase activity of the liver tissues in periods of 1, 3 and 5 hours was investigated. During that period the activity of hepato-specific enzymes in the liver tissues and serum were investigated.

[Use of dalargin in complex anesthesiological protection during operations on the abdominal organs].

The authors analyse experience in the use of the synthetic analogue of ++leu enkephalin dalargin in multicomponent balanced anesthesia in operations on the abdominal organs in 36 patients. With the use of the suggested method the intraoperative expenditure of narcotic analgesics is 6 times less but the efficacy of the anesthesia remains the same. Study of the activity of the liver-specific enzymes (histidase and urokinase) in blood plasma and biopsy material taken from the liver and the content of malonic dialdehyde in the hepatic biopsy specimen revealed hepatoprotective properties of dalargin.