Xymedone conjugate with para-aminobenzoic acid. Estimation of hepatoprotective properties

Abstract

A salt-like conjugate of xymedone with para-aminobenzoic acid in a series of pyrimidine derivatives was synthesized, and its hepatoprotective properties were studied. The compound studied exhibits a cytoprotective effect at a concentration of 25 μmol L-1 enhancing the viability of normal human hepatocyte cells of the Chang Liver line by 2.1 times against the background of the impact of the d-galactosamine toxicant, which was shown by experiments in vitro. The cytotoxicity of the compound (IC50) is 20.7 mmol L-1. The data indicating the hepatoprotective effect most pronounced at the early stages of therapy were obtained in experiments in vivo performed according to the therapeutic scheme on the model of CCl4-induced toxic hepatitis. The ability of the conjugate to exert reparative and protective effects was found, since the surface area of destructive-degenerative and necrotic injuries revealed in hematoxylin- and eosin-stained sections on the third day of intraperitoneal administration of the studied compound in a dose of 0.7 mg kg-1 decreased by 1.5 times. The areas of detection of lipid inclusions in frozen sections stained with Sudan black decreased by four times on the third day at a dose of 1.7 mg kg-1, whereas the decrease was 3.2 times on the seventh day at a dose of 0.7 mg kg-1 compared to the control group of animals administrated with saline. According to the biochemical parameters, positive effects on the secretory and synthetic functions of the liver, bilirubin metabolism, and metabolism of iron and magnesium were observed during the treatment of animals with the conjugate.