[Biochemical markers of muscle tissue during regenerative processes in newts and annelid worms]. / Biokhimichni markery m'iazevoï tkanyny za reheneratsiinykh protsesiv u tritoniv ta kil'chastykh cherv'iakiv.

The biochemical markers of muscle tissue (creatine- and pyruvate-kinase activities and myosin chains maintenance) have been studied at different stages of regeneration process in newt and annelid worms. The enzymes' activity and myosin chains maintenance decrease at the stage of dedifferentiation and return to the standard under redifferentiation of regenerating sites. In some cases the increase of the enzyme activity during redifferentiation is remarked. The results obtained are compared with data about changes of the biochemical markers during embryogenesis and post-embryogenesis. The community of the mechanisms of differentiation and embryogenesis is discussed.

[The role of a protein factor in the effect of alpha-tocopherol on mitochondrial respiration]. / Rol' bilkovogo chynnyka v diï alpha-tokoferolu na dykhannia mitokhondrii.

It is shown that alpha-tocopherol in vitro stimulates respiration of the liver mitochondria in E-hypovitaminosis rats only in the presence of the specific protein factor isolated from the liver cytosol. The action of alpha-tocopherol on mitochondria in the presence of NAD and a protein factor is not accompanied by an increase in the NADH level, that evidences for the absence of the direct redox interaction between NAD and tocopherol.