Influence of N-palmitoylethanolamine on the phospholipid and fatty acid composition of rat liver in ischemia

The effect of N-palmitoylethanolamine (NPE, 10(-5) M) on the lipid peroxidation (LPO) processes, phospholipid and fatty acid content in the rat liver at perfusion and ischemia during the liver preservation was estimated. As early as at the 5th min of perfusion by cooled conserving solution "Eurocollins", LPO activation was determined. Simultaneously the content of lysophosphatidylcholine (LPC) and phosphatidylserine increased, the total cholesterol level decreased. The redistribution of saturated and unsaturated fatty acids quantity was detected. The addition of NPE into "Eurocollins" solution reduced the accumulation of malonedialdehyde and LPC, modified the fatty acids content. These effects, evidently, formed the basis of the protective action of NPE on the hepatic tissues under anoxia.     

Effect of N-palmitoylethanolamine on phospholipid and fatty acid level in ischemic rat liver under reperfusion

The effect of 10(-5) M N-palmitoylethanolamine (NPE) on lipid peroxidation processes, phospholipid and fatty acid content in the ischemic rat liver under reperfusion was estimated. It was shown the significant accumulation of thiobarbituric acid reactive substances (TBARS), the increase of lysophosphatidylethanolamine (LPC), phosphatidylserine, phosphatidylethanolamine, sphingomyelin, general cholesterol content and also the decrease of phosphatidylcholine amount in the ischemic rat liver under reperfusion. Simultaneously the redistribution of saturated and unsaturated fatty acids quantity was detected, that indicates the increasing of membrane rigidity. The addition of NPE into the Eurocollins and Bretshneider's solutions under perfusion and preservation of a donor organ reduced the accumulation of TBARS, LPC, total cholesterol, prevented the changes of cholesterol/phospholipids and saturated/unsaturated fatty acids ratio value in the same experimental conditions. These effects, evidently, formed the basis of the protective action of NPE on the ischemic liver tissues under reperfusion.