Level of genome stability (structural aberrations, aneuploidy and fragile sites) was studied in cells of the lymphocyte culture of ductal breast cancer patients (DBC). Was studied the correctional influence of separate and combinative action of peptide bioregulator (Ala-Glu-Asp-Gly) and heavy metal - nickel. It is shown that DBC patients are characterized by high level of genome instability, which is the result of the chromatin changing state. The used tests makes it possible to conclude that in the case of this form of cancer subordinates to specific epigenetic variation as a hetero- also euchromatic regions of genome. The agents - peptide bioregulator (Ala-Glu-Asp-Gly) and nickel ions, used in cell culture of ductal breast cancer patients, revealed the protective effect what indicates the prospects to further study for their involving purpose in combined therapy of this form of cancer.
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