title: [Production of nitric oxide metabolites during transplanted tumors growth with different metastatic potential].
abstract: The endogenous formation of metabolites of NO - nitrite (NI), nitrates (NA) and volatile nitrosamines in the body, tumor tissue and by abdominal cavity by macrophages for dynamics was investigated in mice F1(C57BlxCBA), Balb/c and BDF with subcutaneous transplanted tumors (Erlich carcinoma - EC and metastatic Lewis lung carcinoma - LLC). It was shown that growth of EC was accompanied by a statistically significant increase in the concentrations of NI and NA in tumor tissue to (7.3±4.67)'10-6 - (7.8±2.57)'10-5 (mol/kg) for the first three weeks and a sharp increase in urinary excretion of NI and NA. The maximum total concentration of NI and NA - (3.,6±0.46)'10-5 in tissue LLC was registered during the early stage of the tumor growth (7 days); it later declined, negatively correlating with the mass of the tumor. NI secretion by abdominal cavity macrophages demonstrated statistically significantly decrease at the stage of intensive growth LLC (14, 21 days). The tissue of EC contained varied concentration of cancerogenic N-nitrosodimethylamine and N-nitrosodiethylamine at all investigated time points. Thus, the ability of different gistogenesis tumor tissue to synthesize metabolites NO depended on time parameters and was more pronounced for EC, than LLC.
authors.affiliation: Institute of Carcinogenesis, Blokhin Russian Cancer Research Center.
authors.forename: V P
authors.initials: VP
authors.lastname: Deriagina
authors.affiliation: Institute of Carcinogenesis, Blokhin Russian Cancer Research Center.
authors.forename: N I
authors.initials: NI
authors.lastname: Ryzhova
authors.affiliation: Institute of Carcinogenesis, Blokhin Russian Cancer Research Center.
authors.forename: L V
authors.initials: LV
authors.lastname: Krivosheeva
authors.affiliation: Institute of Experimental Diagnostics and Therapy of Cancer, Blokhin Russian Cancer Research Center, Moscow, Russia.
authors.forename: I S
authors.initials: IS
authors.lastname: Golubeva
mesh_terms: D000818:Animals; D002286:Carcinoma, Ehrlich Tumor / Q000378:metabolism* / Q000473:pathology; D018827:Carcinoma, Lewis Lung / Q000378:metabolism* / Q000473:pathology; D004052:Diethylnitrosamine / Q000378:metabolism; D004128:Dimethylnitrosamine / Q000378:metabolism; D007279:Injections, Subcutaneous; D017737:Macrophages, Peritoneal / Q000378:metabolism* / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D009362:Neoplasm Metastasis; D009368:Neoplasm Transplantation; D009566:Nitrates / Q000652:urine*; D009569:Nitric Oxide / Q000096:biosynthesis*; D009573:Nitrites / Q000652:urine*; D009928:Organ Specificity; D013997:Time Factors
chemical_list: D009566:Nitrates; D009573:Nitrites; D009569:Nitric Oxide; D004052:Diethylnitrosamine; D004128:Dimethylnitrosamine
keywords: Ehrlich carcinoma; Lewis lung carcinoma; N-nitrosamines; biosynthesis of nitrites; macrophages; nitrates; tumoral tissue