Diacylglycerol is an effector of the clonal expansion of cells containing activated Ha-ras genes.

abstract：:3-Hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors, pravastatin (Pr) and simvastatin (Si), suppressed 1,2-dimethylhydrazine (DMH)-induced colon cancer development in female ICR mice. All mice received an i.p. injection of 10 mg DMH/kg body wt once weekly for 15 weeks. Pr was administered at 0.01, 0.0...

journal_title：Carcinogenesis

authors： Narisawa T,Fukaura Y,Terada K,Umezawa A,Tanida N,Yazawa K,Ishikawa C

更新日期：1994-09-01 00:00:00

abstract：:We investigated possible mechanisms associated with promotion of hepatocarcinogenesis by the synthetic estrogens mestranol (M) and ethinyl estradiol (EE). Our first objective was to determine whether chronic EE treatment was associated with hepatotoxicity accompanied by regenerative hyperplasia. Female Sprague-Dawley ...

journal_title：Carcinogenesis

authors： Yager JD,Roebuck BD,Paluszcyk TL,Memoli VA

更新日期：1986-12-01 00:00:00

abstract：:The inbred DRH rats are highly resistant to the induction of hepatocellular carcinoma (HCC) by feeding of 3'-methyl-4-dimethylaminoazobenzene (3'-Me-DAB). Previously, we found that two quantitative trait loci (QTLs), Drh1 and Drh2, significantly reduced the number, size and area of glutathione S-transferase-placental ...

journal_title：Carcinogenesis

authors： Yan Y,Zeng ZZ,Higashi S,Denda A,Konishi Y,Onishi S,Ueno H,Higashi K,Hiai H

更新日期：2002-01-01 00:00:00

abstract：:Patients with familial adenomatous polyposis (FAP) have a high risk of developing duodenal adenomas and carcinomas. The distribution of these neoplasms resembles mucosal exposure to bile, suggesting that bile may play a role in adenoma development. Our previous results, using DNA adducts detected by 32P-postlabelling ...

journal_title：Carcinogenesis

authors： Scates DK,Spigelman AD,Nugent KP,Phillips RK,Venitt S

更新日期：1993-06-01 00:00:00

abstract：:N-Nitrosobutyl(4-hydroxybutyl)amine (BBN) is a selective bladder carcinogen in rats. Its organ specificity may depend on several factors, including metabolic activation, DNA alkylation and repair within the target organ. Metabolic activation of BBN, which is asymmetrical, may result in butylating and 4-hydroxybutylati...

journal_title：Carcinogenesis

authors： Airoldi L,Magagnotti C,Bonfanti M,Chiappetta L,Lolli M,Medana C,De Gregorio G,Fanelli R

更新日期：1994-10-01 00:00:00

abstract：:In vitro activation of benzo[a]pyrene to protein-binding forms was investigated with the following two systems: (1) various fractions of human and rat blood had a potential of activating benzo[a]pyrene to forms binding to proteins in the presence of linoleic or arachidonic acid. Red blood cells activated much more ben...

journal_title：Carcinogenesis

authors： Nemoto N

更新日期：1986-02-01 00:00:00

abstract：:Amino acids (AAs) are biologically important nutrient compounds necessary for the survival of any cell. Of the 20 AAs, cancer cells depend on the uptake of several extracellular AAs for survival. However, which extracellular AA is indispensable for the survival of cancer cells and the molecular mechanism involved have...

journal_title：Carcinogenesis

authors： Furusawa A,Miyamoto M,Takano M,Tsuda H,Song YS,Aoki D,Miyasaka N,Inazawa J,Inoue J

更新日期：2018-05-28 00:00:00

abstract：:As we have shown previously [Tardieu,D., Jaeg,J.P., Cadet,J., Embvani,E., Corpet,D.E. and Petit,C. (1998) Cancer Lett, 134, 1-5], a 48-h treatment of 6% dextran sodium sulphate (DSS) in drinking water led to a reproducible 2-fold increase of the mutagenic oxidative lesion 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo...

journal_title：Carcinogenesis

authors： Tardieu D,Jaeg JP,Deloly A,Corpet DE,Cadet J,Petit CR

更新日期：2000-05-01 00:00:00

abstract：:Heterocyclic aromatics amines (HAAs), such as 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx), are metabolically activated by cytochrome P4501A2 (CYP1A2) and N-acetyltransferase (NAT2). We examined the relationship between CYP1A2 and NAT2 activity and the excretion of total unconjugated MeIQx in 66 healthy subje...

journal_title：Carcinogenesis

authors： Sinha R,Rothman N,Mark SD,Murray S,Brown ED,Levander OA,Davies DS,Lang NP,Kadlubar FF,Hoover RN

更新日期：1995-11-01 00:00:00

abstract：:Practical methods for the routine solid-phase synthesis of oligodeoxynucleotides containing O6-alkylguanine are described. It is shown that if the 2-amino group of the alkylated base is protected with a phenylacetyl group, and a mixture of nitrobenzaldoximate ions and ammonia used to remove the protecting groups from ...

journal_title：Carcinogenesis

authors： Smith CA,Xu YZ,Swann PF

更新日期：1990-05-01 00:00:00

abstract：:Overexpressed DNA methyltransferase 1 (DNMT1) strongly contributes to tumor suppressor gene silencing in colorectal cancer (CRC). However, the underlying mechanism of DNMT1 overexpression is still unclear. MicroRNAs (miRNA) have been implicated as gene regulators controlling diverse biological processes, including car...

journal_title：Carcinogenesis

authors： Wang H,Wu J,Meng X,Ying X,Zuo Y,Liu R,Pan Z,Kang T,Huang W

更新日期：2011-07-01 00:00:00

abstract：:An ongoing controversy exists on beneficial versus harmful effects of high beta-carotene (BC) intake, especially for the lung. To elucidate potential mechanisms, we studied effects of BC on lung gene expression. We used a beta-carotene 15,15'-monooxygenase 1 (Bcmo1) knockout mouse (Bcmo1(-/-)) model, unable to convert...

journal_title：Carcinogenesis

authors： van Helden YG,Godschalk RW,Heil SG,Bunschoten A,Hessel S,Amengual J,Bonet ML,von Lintig J,van Schooten FJ,Keijer J

更新日期：2010-08-01 00:00:00

abstract：:One of the peaks present in HPLC profiles of [3H]benzo[a]-pyrene (BaP)-deoxyribonucleosides prepared by enzymatic degradation of [3H]BaP-DNA isolated from Wistar rat embryo cell cultures exposed to [G-3H]BaP was found to be r-7,c-9,c-10,t-8-tetrahydroxy-7,8,9,10-tetrahydroBaP, a BaP-DNA adduct decomposition product (P...

journal_title：Carcinogenesis

authors： Pruess-Schwartz D,Mauthe RJ,Baird WM

更新日期：1988-10-01 00:00:00

abstract：:The present study was designed to evaluate whether etodolac, a cyclooxgenase-2 (COX-2)-specific inhibitor, could prevent chemically induced biliary carcinogenesis in bilioenterostomized hamsters. Syrian golden hamsters were subjected to choledochojejunostomy and then received subcutaneous injections of N-nitrosobis(2-...

journal_title：Carcinogenesis

authors： Tsuneoka N,Tajima Y,Kitazato A,Fukuda K,Kitajima T,Kuroki T,Onizuka S,Kanematsu T

更新日期：2005-02-01 00:00:00

abstract：:O-Methylation of catecholestrogens catalyzed by catechol-O-methyltransferase provides a major route for the rapid metabolic clearance of these steroids. However, the metabolic clearance rate of 4-hydroxyestradiol (4-OH-E2) is considerably lower than that of 2-hydroxyestradiol, although 2- and 4-hydroxycatecholestrogen...

journal_title：Carcinogenesis

authors： Roy D,Weisz J,Liehr JG

更新日期：1990-03-01 00:00:00

abstract：:Comparisons of aromatic amine activation were made by using intact cells or cell homogenates (S-9) from bovine bladder urothelium and liver. Since both liver and bladder are thought to contribute carcinogenic metabolites for bladder cancer initiation, comparisons of these two organs' relative ability to activate aroma...

journal_title：Carcinogenesis

authors： Hix C,Oglesby L,MacNair P,Sieg M,Langenbach R

更新日期：1983-11-01 00:00:00

abstract：:A mouse monoclonal antibody (Mab) was prepared which showed high specificity for a potential marker of exposure to methylating carcinogens such as 3-methyladenine (3-MeAde). In a low-temperature (4 degrees C) ELISA a linear calibration curve was obtained between 3 and 50 fmol/well. In combination with an immunoaffinit...

journal_title：Carcinogenesis

authors： Prevost V,Shuker DE,Bartsch H,Pastorelli R,Stillwell WG,Trudel LJ,Tannenbaum SR

更新日期：1990-10-01 00:00:00

abstract：:Neuroblastic tumors (NTs) include the neuroblastomas, ganglioneuroblastomas and ganglioneuromas. We have reported previously that the calcium-sensing receptor is expressed in differentiated, favorable NTs but almost undetectable in unfavorable neuroblastomas. We have now detected hypermethylation of a particular regio...

journal_title：Carcinogenesis

authors： Casalà C,Gil-Guiñón E,Ordóñez JL,Miguel-Queralt S,Rodríguez E,Galván P,Lavarino C,Munell F,de Alava E,Mora J,de Torres C

更新日期：2013-02-01 00:00:00

abstract：:4,4'-Methylene-bis(2-chloroaniline) (MOCA) can produce tumors in rodents and dogs and an increased incidence of bladder tumors has been reported in exposed workers. It is therefore of interest to identify the human cytochrome P450 (P450) enzymes involved in MOCA N-oxidation, the primary reaction involved in the format...

journal_title：Carcinogenesis

authors： Yun CH,Shimada T,Guengerich FP

更新日期：1992-02-01 00:00:00

abstract：:7,8-Dihydro-8-oxo-2'-deoxyguanosine (8-oxo-dG) was measured as an indicator of nickel-induced oxidative base damage in the presence of H2O2. Heterochromatic proteins isolated from Chinese hamster liver cells enhanced the formation of 8-oxo-dG induced by NiCl2 and H2O2 in vitro, whereas euchromatic proteins inhibited t...

journal_title：Carcinogenesis

authors： Huang X,Kitahara J,Zhitkovich A,Dowjat K,Costa M

更新日期：1995-08-01 00:00:00

abstract：:The mutagenicity of N-nitroso-N-benzyl-methylamine (NBzMA), N-benzyl-N-nitrosourea (BzNU) and N-methyl-N-nitrosourea (MNU) in Salmonella typhimurium strains was investigated. BzNU selectively mutated TA100 strain as compared to TA1535, whereas MNU showed an inverse strain response, an effect probably related to the fa...

journal_title：Carcinogenesis

authors： Lin DX,Malaveille C,Park SS,Gelboin HV,Bartsch H

更新日期：1990-09-01 00:00:00

abstract：:Garcinol, a polyisoprenylated benzophenone, from the fruit rind of Garcinia spp., has been shown to have anti-inflammatory and anticarcinogenic activities. To study its mechanism of action, we analyzed the effects of garcinol and its derivatives, including cambogin, garcim-1 and garcim-2, on arachidonic acid metabolis...

journal_title：Carcinogenesis

authors： Hong J,Sang S,Park HJ,Kwon SJ,Suh N,Huang MT,Ho CT,Yang CS

更新日期：2006-02-01 00:00:00

abstract：:Benzo(a]pyrene was metabolized in liver cell lines derived from BC-IV and BD-IV rats which included several chemically-transformed lines (IAR-6-1; IAR-19; IAR-28), one spontaneous transformant (IAR-27) as well as one non-malignant line (IAR-20). Cultures were treated with tritiated benzo[a]pyrene over a 5-day period. ...

journal_title：Carcinogenesis

authors： Selkirk JK,MacLeod MC,Kuroki T,Drevon C,Piccoli C,Montesano R

更新日期：1982-01-01 00:00:00

abstract：:The effect of daily parenteral administration of a long-acting analogue of somatostatin (SMS 201-995) on the development of intestinal tumours and the rate of crypt cell proliferation in azoxymethane-treated rats has been studied. SMS 201-995 had no significant effect on the number of colonic tumours induced. In the d...

journal_title：Carcinogenesis

authors： Savage AP,Matthews JL,Adrian TE,Ghatei MA,Cooke T,Bloom SR

更新日期：1987-04-01 00:00:00

abstract：:We have established a protocol that allows qualitative and quantitative determination of butadiene monoepoxide-DNA adducts formed as a result of inhalation exposure to 1,3-butadiene. We observed that in this particular case in vivo samples required extensive sample purification to facilitate a low background. Sample p...

journal_title：Carcinogenesis

authors： Koivisto P,Sorsa M,Pacchierotti F,Peltonen K

更新日期：1997-02-01 00:00:00

abstract：:Breakdown of basement membrane (BM) is believed to be an essential step for tumor invasion and metastases. We have previously demonstrated that matrix metalloproteinase-9 (MMP-9), the 92 kDa collagenase expression correlates with metastases in human colorectal cancer (CRC). This study explores the relationship between...

journal_title：Carcinogenesis

authors： Zeng ZS,Cohen AM,Guillem JG

更新日期：1999-05-01 00:00:00

abstract：:The metabolism of benzo[a]pyrene (BP) in cultured human epidermal keratinocytes was investigated using thin layer chromatography, high pressure liquid chromatography and cell-mediated mutagenesis assay. Epidermal keratinocytes were obtained from skin of normal subjects and all experiments were performed on primary cul...

journal_title：Carcinogenesis

authors： Kuroki T,Nemoto N,Kitano Y

更新日期：1980-07-01 00:00:00

abstract：:Cytochrome P450 1B1 (CYP1B1) is an enzyme that has a unique tumor-specific pattern of expression and is capable of bioactivating a wide range of carcinogenic compounds. We have reported previously that coordinated upregulation of CYP1B1 by inflammatory cytokines, such as tumor necrosis factor-α (TNF-α) and the aryl hy...

journal_title：Carcinogenesis

authors： Smerdová L,Šmerdová J,Kabátková M,Kohoutek J,Blažek D,Machala M,Vondráček J

更新日期：2014-11-01 00:00:00

abstract：:Possible relationships between structure and metabolism of nitrosamines have been investigated in the rat small intestine. Isolated segments of jejunum and ileum were perfused from the luminal side for 2 h with a Tyrode solution containing one of four symmetrical dialkylnitrosamines with 2-5 carbon atoms per side chai...

journal_title：Carcinogenesis

authors： Richter E,Richter-Cooberg U,Feng X,Schulze J,Wiessler M

更新日期：1986-07-01 00:00:00

abstract：:Cultures of isolated human hepatocytes from three different human liver specimens were exposed for 24 h to media containing [3H]benzo[a]pyrene (BP) (0.1, 1.0, 10, 100 microM). The cells and media were harvested and extracted. Subsequent incubations of the aqueous phase with beta-glucuronidase and aryl sulfatase, follo...

journal_title：Carcinogenesis

authors： Monteith DK,Novotny A,Michalopoulos G,Strom SC

更新日期：1987-07-01 00:00:00