Morphological features of recovery in model rats liver cirrhosis induced by CCl4 after transplantation of mesenchymal stem cells from human umbillical cord

Abstract

Aim. To study the process of recovery of rat liver in a model of cirrhosis, which was induced by intraperitoneal injection of CCl4, after transplantation human umbilical cord MSCs. Today in the world as an alternative to liver transplantation is offered cell therapy, which leads to the recovery of organ’s functions through the injection of MSCs. The key role of MSCs in the development of fibrosis and its final stage - liver cirrhosis is the inhibitory effect on the proliferation of the extracellular matrix. Methods. The methods of histology and morphometry were used in the work. Results. It was found, that 13 weeks after CCl4 induction, the amount of collagen increased 7 times, atrophic, sclerotic changes in the architectonics of rat liver and functional disorders of hepatocytes were observed. After transplantation of human umbilical cord MSCs - 6-7x106 cells / kg body weight of the animal, was shown that after 3 weeks the rate of collagen accumulation decreased and after 13 weeks the amount of ECMs and other morphometric indexes almost corresponded to the negative control. Conclusions. Studies have shown that transplantation MSCs from human umbilical cord leads to almost complete regeneration of the rat liver which was caused by experimental liver cirrhosis with intraperitoneal injection of CCl4. Keywords: human umbilical cord MSCs, extracellular matrix, hepatocytes.