Effect of Lutropin Concentration on the Efficiency of Isolated Porcine Kidney Storage in Modified Biolasol Solution.

BACKGROUND: Lutropin, a luteinizing hormone (LH), is a glycoprotein hormone secreted by gonadotropic cells of the anterior pituitary gland. LH receptors are a promising therapeutic target. The aim of the study was to analyze the protective effect of LH as a component of preservation solutions on the prevention of ischemia-reperfusion injury in isolated porcine kidneys. METHODS: The study used Biolasol solution (Biochefa, Sosnowiec, Poland) modified with the addition of ascorbic acid and LH at a concentration of 0.01 mug/L, 0.1 mug/L, and 1 mug/L. The study was carried out on 40 kidneys from 20 Polish large white pigs. Kidneys were divided into 4 groups, then washed out of the blood, and cooled by complete immersion in a 500-mL preservation solution at 4 degrees C. The total storage time for grafts in the preservation solutions was 2 hours. After this time, the kidneys were perfused. Perfundates intended for biochemical analyses were collected from the renal vein after 0 minutes and after 30 minutes of perfusion. Another perfusion was performed after 24-hour renal storage. The activity of aspartate aminotransferase and alanine aminotransferase, as well as sodium, potassium, total protein, and urea concentrations was determined. RESULTS: LH as a component of preservation solutions affects the degree of ischemia-reperfusion injury of isolated porcine kidneys. CONCLUSIONS: The results obtained suggest that the efficacy of LH in improving ischemic kidney function is dependent on the dose used. The best graft protection was obtained using the lowest concentration of LH: 0.01 mug/L.