Influence of cortisol and very low-density lipoproteines on the development of НА-1 hepatoma and Ehrlich’s carcinoma

Studies were conducted using ascetic HA-1 hepatomas and ascitic Ehrlich’s carcinoma cells. After passage of cells in mice, cell culture containing tumor-associated macrophages was studied. It was shown that the very low-density lipoprotein (VLDL)-cortisol complex significantly inhibited proliferative activity of tumor cells. The obtained constant of cortisol binding to VLDL indicated that the protein component of lipoproteins participated in the complex formation. Tumor-associated macrophages were suggested to play an important role in the formation of this complex. It was found that inhibition of tumor cell growth was related to apoptosis.