CBA strain mice as a model of spontaneous carcinogenesis

Abstract

The review analyzes some parameters of CBA mice-males as model of spontaneous carcinogenesis characterizing adhesive and adaptive disorders. A weakening of the hepatocytes mutual adhesiveness force was noted already in early ontogenesis (5–10 days of postnatal development). This violation persisted and enhanced during hepatocarcinogenesis. A decrease of the β2 leukocyte integrins LFA-1 and Mac-1 expression on peripheral blood cells as well as an increase of the interleukins 6 and 10 in blood serum were determined during ontogenesis. It is significant for weakening the liver cells contact interactions (mutual adhesiveness) as well as immunity effectors and tumor cells interactions. A disbalance of the adaptive reactions and life quality important components was revealed in the CBA mice-males ontogenesis. Number of dopaminergic neurons and the neurogenesislevel in CBA micemales were decreasing. This does not contradict the dynamics of chronic stress and the aging process: an increase in the catabolic stress hormone corticosterone, a decrease in the anabolic hormone testosterone in the blood serum, a decrease in motor activity, signs of cachexia and alopecia, as well as a violation of immunological parameters.CBA mice-males with an assessment of parameters characterizing adhesive and adaptive disorders during spontaneous carcinogenesis (the hepatocytes mutual adhesiveness forсe, the expression of β2 leukocyte integrins LFA-1 and Mac-1 on peripheral blood cells, the content of interleukins 6, 10, corticosterone and testosterone in blood serum, the number of dopaminergic neurons in the midbrain during ontogenesis) as well as the frequency and size of tumours, lifespan and somatic status of animals can be used as a scientifically- and evidence-based test system to study cytostatic drugs as well as non-toxic geroprotective medications for prevention and treatment of cancer in individuals with an increased risk of malignant neoplasms developing especially hepatocellular carcinoma.