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[Activity of key enzymes of heme metabolism and cytochrome P-450 content in the rat liver in experimental rhabdomyolysis and hemolytic anemia].
Ukraïnsʹkyĭ Biokhimichnyĭ Z︠h︡urnal 2003 May
The 5-aminolevulinate synthase, heme oxygenase, tryptophan-2,3-dioxygenase activities, the content of total heme and cytochrome P-450 content in the rat liver and absorption spectrum of blood serum in Soret region under glycerol model of rhabdomiolisis and hemolytic anemia caused by single phenylhydrazine injection have been investigated. The glycerol injection caused a considerable accumulation of heme-containing products in the serum and the increase of the total heme content, holoenzyme, total activity and heme saturation of tryptophan-2,3-dioxygenase, as well as the increase of the 5-aminolevulinate synthase and heme oxygenase activities in the liver during the first hours of its action and the decrease of cytochrome P-450 content in 24 h. Administration of phenylhydrazine lead to the increasing of hemolysis products content in blood serum too, although it was less expressed. The phenylhydrazine injection caused the increase of activities of 5-aminolevulinate synthase, holoenzyme, total activity and heme saturation of tryptophan-2,3-dioxygenase, as well as decrease of cytochrome P-450 content in the rat liver in 2 h. The increase of the total heme content and heme oxygenase activity has been observed in 24 h. The effect of heme arrival from the blood stream, as well as a direct influence of glycerol and phenylhydrazine on the investigated parameters are discussed.
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