[Ubiquinone and vitamin E content in rat tissues in experimental focal myocarditis and hypoxic hypoxia].

The content of ubiquinone and vitamin E in liver, heart, kidney and muscle tissues has been found to vary in experimental focal myocarditis and acute hypoxic hypoxia. These compounds have been demonstrated to accumulate in myocardial mitochondria, which is likely to be related to both interstitial and inter-organ redistribution having a compensatory-adaptation importance. In the pathology under study, the myocardium demonstrates a greater intensity and more remarkable line of changes in the content of vitamin E and ubiquinone.

[Interconversions of ubiquinone and ubichromenol in rat liver under the effect of alpha-tocopherol].

Incubation of ground liver preparation isolated from vitamin E-deficient rats resulted in correlated in time changes of ubiquinone and ubichromenol contents and their ration in tissues. A suggestion is made on the possibility of ubiquinone and ubichromenol interconversions and of the existence of a system controlling (depending on a functional state of the organism) a certain ratio of the quinones contents in animal tissues. Possible biochemical role of ubichromenol in animals is discussed.