Morphofunctional parameters of blood cells of the rats with dimethylhydrazine induced colon carcinogenesis have been investigated. The reduction of Mean corpuscular hemoglobin (MCH) and Mean corpuscular hemoglobin concentration (MCHC) whereas increasing of reticulocytes number and indirect bilirubin after 20 weeks of experiment of dimethylhydrazine (DMH)-induced colon carcinogenesis indicate the hemolysis of red blood cells due to the DMH influence during tumors development. The moderate increasing of monocytes and platelets number, as well as increment of eosinophilic granulocytes number have been observed. 26 weeks of experiment (after 6 weeks discontinuation of DMH) leads to reduction of hemoglobin and erythrocytes number, a moderate increase of monocytes number and increment of platelets number in rats blood. The anemia with thrombocytosis accompany cancer in humans and the model of DMH-induced colon cancer is appropriate not only for studies of carcinogenesis and searching of new antineoplastic drugs, but also for the development of the correctional approaches of cancer-associated changes in the hematopoietic system.

Morphofunctional parameters of blood cells of a rat with 1,2-dimethylhydrazine-induced colon carcinogenesis

Hematological effects of the maleimide derivative during the activation of erythropoiesis induced by cobalt chloride

The maleimide derivative--1-(4-Cl-benzyl)-3-Cl-4-(CF3-phenylamino)-1H-pyrrol-2.5-dione (MI-1) with cytostatic activity did not cause substantial changes of liver antioxidant system and level of matrix metalloproteinase-2 in intestinal mucosa after chronic treatment (for 20 weeks). MI-1 did not cause significant changes in the content of thiobarbituric-active products and plasma membrane protein carbonyl groups in the rat liver. However activities of superoxide dismutase, glutathione peroxidase, and content of reduced glutathione were decreased in both doses--0.027 and 2.7 mg/kg. The level of matrix metalloproteinase-2 in intestinal mucosa was decreased just in maximum dose--2.7 mg/kg. The contents of thiobarbituric-active products, protein carbonyl groups, reduced glutathione, matrix metalloproteinase-2, activities of glutathione peroxidase and glutathione-S-transferase in the liver cells have increased in 1.2-dimethylhydrazine-induced colon cancer in rats. The activities of enzymes of the first line of antioxidant defense--superoxide dismutase and catalase were decreased to 40%. The maleimide derivative prevents development of oxidation stress and partially reduce them to control level.

[State of the liver antioxidant system and content of matrix metalloproteinase-2 of the large intestine under the effect of maleimide derivative in experimental colorectal carcinogenesis in rats].

Mandryk SIa

Papers

[State of the liver antioxidant system and content of matrix metalloproteinase-2 of the large intestine under the effect of maleimide derivative in experimental colorectal carcinogenesis in rats].