The Dynamics of the Protein Content in the Tissues of Different-Age Carp Fish Under the Combined Action of Heavy Metal Salts
The complex effect of salts of heavy metals (Pb<sup>2+</sup>, Cd<sup>2+</sup>, Mn<sup>2+</sup>) on the parameters of protein metabolism in tissues of carp specimens (Cyprinus carpio L.) was studied. For this research, homogenates of liver, kidney, and skeletal muscle tissues of fish were taken. The degree of influence of a mixture of heavy metals on the intensity of protein metabolism was judged on the basis of a study of the content of total protein and its fractions (albumin, globulins) on the 5th and 15th days of their exposure. The research has shown that on the 5th and 15th days of the combined effect of heavy metal ions, the phase changes in the content of proteins and their fractions in the organs of carp underyearlings and yearlings are observed. Ions Pb<sup>2+</sup>, Cd<sup>2+</sup> and Mn<sup>2+</sup> with their combined action do not have a synergistic effect and do not have a cumulative effect.