Abstract

Introduction. The use of immunomodulators to regulate reparative processes in affected organs and tissues remains a pressing issue. Of greatest interest is liver regeneration after extended hepatic resection (EHR) in donors in right lobe living related donor liver transplantation. We propose a transdermal therapeutic system (TTS) with an immunomodulator to enhance the natural process of liver tissue regeneration. Objective: to study the effect of transdermal administration of immunomodulator sodium aminodihydrophthalazinedione on early recovery processes in the liver after EHR in in vivo experiments.Materials and methods. Sodium aminodihydrophthalazinedione was used as an active substance in TTS in the form of powder for preparation of intramuscular injection solution (Galavit®, SELVIM LLC). An experimental EHR model was performed on 22 male Wistar rats weighing 350–380 g. After HER, all animals were divided into two groups. Group 1 (n = 10) consisted of untreated animals. In group 2 (n = 12), TTS was applied immediately after liver resection. The experiment lasted for 48 hours; the TTS was changed once after 24 hours from the beginning of application.Results. In either group, there was no significant difference in the weight of liver remnant gain and in biochemical blood parameters at 48 hours after EHR. Assessment of the mitotic index (MI) of hepatocytes 48 hours after EHR revealed a significant increase in MI in both groups in comparison with the baseline (before liver resection) equal to 0.14 ± 0.07‰. The MI in group 1 and group 2 animals was 12.70 ± 4.9‰ and 17.43 ± 4.90‰, respectively (p ≤ 0.05).Conclusion. Studies on the regenerative activity of sodium aminodihydrophthalazinedione TTS on an experimental EHR model in rats showed that this drug form had a pronounced stimulating effect on the mitotic activity of liver cells.

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