[Ubiquinone and sterol metabolism in the liver of rats maintained on a diet short of aromatic amino acids].

In in vivo tests subject to enquiry was incorporation of I--14C-acetate in non-saponified lipids, ubiquinone and sterines in the liver of rats receiving the usual ration of the vivarium or the one short of aromatic amino acids, and on this basis the relative rates of both the biosynthesis and decomposition of these compounds were determined. In the liver of rats receiving a ration short of aromatic amino acids the biosynthesis of only non-saponified lipids and sterines was strongly inhibited and these animals also demonstrated an accelerated decomposition of ubiquinone.