Genomic instability of lymphocytes in patients with lung cancer with combined ischemic heart disease

Abstract

Carcinogenesis is associated with a stepwise accumulation of genetic changes induced by the action of various genotoxic environmental factors (heavy metals, polycyclic aromatic hydrocarbons, radioactive substances, and others). Comorbid pathology can make a significant contribution to the accumulation of genome damage, influence the effectiveness of treatment, and determine the overall prognosis of survival. 50 men with lung cancer were examined. The control group included 84 men without oncopath-ology of close age, living in the same area. A micronucleus assay was performed on blood lymphocytes. The analysis of binuclear lymphocytes with micronuclei, protrusions, nucleoplasmic bridges revealed a statistically significant difference between the patient groups and the control. An increase in the frequency of occurrence of these markers of cytogenetic disorders in patients with lung cancer was noted. A higher replication index was recorded in the control group. In patients with lung cancer and concomitant ischemic heart disease, differences in the frequency of mononuclear lymphocytes with micronuclei and the frequency of apoptosis were recorded as compared with patients without cardiovascular diseases.