Abstract
Expression of VEGF-A in Walker 256 carcinosarcoma and mandibular salivary gland of rats during paraneoplastic process and various regimens of chemotherapy with melatonin and cyclophosphamide were studied by immunohistochemical methods. VEGF-A expression increased in the tumor node and salivary gland after monotherapy with melatonin and cyclophosphamide during progression of tumor growth and paraneoplastic syndrome. A decrease in VEGF-A expression in the tumor node and salivary gland was found after monotherapy with melatonin and cyclophosphamide and, especially, after combined treatment, which proves maximum therapeutic efficiency of combined administration of chemical agents with various mechanisms of action. Overexpression of VEGF-A in the mandibular salivary gland can have diagnostic and predictive value in early diagnostics of neoplasms.
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