Caspase activity in lymphocytes of patients with depression and anxiety of different severity
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Although borderline personality disorders (BPD) are most common psychiatric diseases, their pathogenesis still remains poorly understood. According to the literature and results of own previous studies, pathological changes associated with BPD may affect not only brain cells, but also cells of the immune system. One of the functionally important examples of communication between the immune and nervous systems in BPD is death of lymphocytes, particularly recognized in the most common mental disorder, depression. We have shown previously that activity of caspases, the key enzymes of programmed cell death increases in some types of BPD. In this study, we have investigated caspase activity in peripheral blood mononuclear cells (PBMC) of BPD patients of different severity. It has been found that in severe depression activity of initiator and executive caspases decreases as compared with control, and patients with a mild form of depression. In contrast, patients with severe form of anxiety were characterized by increased activity of the same enzymes as compared with control and patients with less severe forms of anxiety. Thus, the study of PBMC caspase can not only discriminate mild and severe forms of BPD, but can also help to identify specific molecular mechanisms responsible for the development of depression and anxiety.
Keywordsdepression anxiety lymphocytes apoptosis caspases borderline personality disorders
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