M. M. Marchenko, G. P. Kopylchuk, O.?V.?Ketsa, I. A. Shmarakov
Cytochrome P-450 thermal inactivation rate, and content of protein sulfhydryl groups and cytochrome Р-450 in the microsomal liver fraction of rats at different stages of Huerin’s carcinoma growth were investigated. Liposomal form of BCU administration on the background of preliminary (for 2 hours) administration of phosphatidylcholine liposomes suspension was performed. The low level of cytochrome Р-450, protein SH-groups in microsomal liver fraction and increase of the rate of transition of microsomal cytochrome Р-450 in Р-420 was shown in the dynamics of Huerin’s carcinoma growth in an organism. Low microsomal cytochrome P-450 distraction was shown in the rat liver under conditions of antitumor liposomal preparation BCU injection on the 21st day after the transplantation of Huerin’s carcinoma. At the same time nonliposomal BCU caused the opposite effect. The preliminary administration of phosphatidylcholine liposomes favours the approach of the investigated parameters to the control values on the terminal stages of tumour growth.
Key words: cytochrome Р-450 inactivation, microsomal fraction, protein sulfhydryl groups, liposomal antitumor preparation hydrobromide 5-(5?,6?-benzocumaroile-3?)-methylaminouracil, liver, Huerin’s carcinoma.
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