Role of functional activity abnormalities of hypothalamic-pituitary-gonadal system in pathogenesis of neoplastic proliferation in patients with breast cancer

The research goal is to determine the pathogenic relationship between the dynamic changes of content of individual fractions of estrogen, progesterone, follicle-stimulating hormone, luteinizing hormone and somatotropic hormone in blood of patients with breast cancer from the stage of neoplasia spread. Methods: The authors have performed comparative evaluation of functional state of hypothalamic — pituitary — gonadal system in 128 patients with infiltrating ductal breast carcinoma (clinically nodular pathology form) using enzyme-linked immunosorbent analysis. Results: Examination of hormone profile of peripheral blood of patients with nodular breast cancer has revealed presence of centrogenous hormone influence on peripheral glands supplied by hormones of hypothalamic — pituitary system such as follicle-stimulating hormone and luteinizing hormone, these patients being of reproductive, climacteric and post-menopausal ages. At the same time, progress of initial stages of neoplastic proliferation in patients with breast cancer has been naturally accompanied by increase of estradiol level in blood, decrease of progesterone and estriol levels in blood. These levels have been parallel to the stage of neoplastic process. Hormone disbalance has been also characterized by increase of somatotropic hormone level in blood of patients with breast cancer. Hormone level increasing has been progressed by metastasizing neoplastic cells. Conclusion: The leading role in the pathogenesis of breast cancer in patients of different age groups should be assigned to the development of hormone disbalance. It should be noted that the principle of «feedback» between the central hormone influences and blood levels of hormones of peripheral glands has not been determined.