ArticleBulletin of experimental biology and medicine2024
Influence of Fragmented Human DNA on the Relationship between MicroRNA (miR-21, -221, -222, and -429) of the Lymph and the Structure of the Thymus after Surgical Treatment and Chemotherapy for Breast Cancer.
Article in Bulletin of experimental biology and medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
In female Wistar rats, we studied the relationship between the levels of miR-21, miR-221, miR-222, and miR-429 in the lymph and morphometric parameters of the thymus after surgical treatment of breast cancer, chemotherapy, and administration of fragmented human DNA. The levels of pro-oncogenic miR-221 and miR-222 in the lymph decreased after surgical treatment and chemotherapy in comparison with the pathological controls. Positive correlations of miR-221 and miR-429 with small lymphocytes in the cortical substance and miR-21 and miR-429 with small lymphocytes of the medullary substance of the thymus were revealed. After administration of fragmented human DNA, an increase in the level of miR-429 in the lymph was detected in comparison with resection+chemotherapy. In the subcapsular zone of the cortical substance, proliferative activity and the number of cells with pyknotic nuclei decreased. The number of macrophages increased in all structural zones of the thymus. The following interrelations were revealed: in the subcapsular zone of the cortical substance, correlations of immunoblasts with miR-222, macrophages and mitotically dividing cells with miR-429; in the central part of the cortical substance and medullary substance, as well as the cortical-medullary zone, correlation of miR-221 with mitotically dividing cells; in the central part of the medullary substance, correlation of miR-429 with epithelial cells.
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