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Acute restraint stress increases the frequency of vinblastine-induced micronuclei in mouse bone marrow cells

Acute physiological stress induces remarkable effects on the nervous, endocrine, and immune systems and also on cellular metabolism and cell division processes. Stress-induced instability of cellular mechanisms might play an important role in increasing cell division disorders. In this study, a relationship between stress and micronucleus (MN) induction in mouse (balb/c) bone marrow cells following vinblastine treatment, or stress or stress and vinblastine treatment in comparison to a non-stressed control group was investigated. In order to test the effects of treatments on MN induction, an in vivo MN assay was performed on bone marrow cells. The results revealed a significantly greater increase in MNs in bone marrow cells (polychromatic erythrocytes) from the stressed/vinblastine treated mice. The data indicate the ability of exposure to an emotional stressor to enhance the damaging actions on bone marrow cells of an aneugenic agent.