Partial persistency of 2-aminofluorene and N-acetyl-2-aminofluorene in rat liver DNA.

abstract：:Prostate cancer (CaP) is the second leading cause of cancer death in American men. Chronic inflammation has been one of several factors associated with the development of CaP. Single-nucleotide polymorphisms (SNPs) in cytokine genes have been associated with increased inflammation, increased cytokine production and po...

journal_title：Carcinogenesis

authors： Zabaleta J,Lin HY,Sierra RA,Hall MC,Clark PE,Sartor OA,Hu JJ,Ochoa AC

更新日期：2008-03-01 00:00:00

abstract：:The carcinogenic heterocyclic amine 2-amino-3,8-dimethyl-imidazo[4,5-f]quinoxaline (MeIQx) is widely distributed in cooked foods. The nuclease P1 method increased the sensitivity of the standard 32P-postlabeling analysis about 1000-fold for detection of MeIQx-DNA adducts. The recovery of MeIQx-DNA adducts by the nucle...

journal_title：Carcinogenesis

authors： Ochiai M,Nagaoka H,Wakabayashi K,Tanaka Y,Kim SB,Tada A,Nukaya H,Sugimura T,Nagao M

更新日期：1993-10-01 00:00:00

abstract：:The effects of in vivo exposure to DDT on hepatic gap junctional intercellular communication (GJIC) and connexin gene/protein expression in Sprague-Dawley rats were examined by in vivo/in vitro dye-transfer assay, immunohistochemical staining, and by Western and Northern blot analyses. In the dose-response study, thre...

journal_title：Carcinogenesis

authors： Tateno C,Ito S,Tanaka M,Oyamada M,Yoshitake A

更新日期：1994-03-01 00:00:00

abstract：:Hepatocyte growth factor (HGF)-stimulated Met signaling influences tumor survival, growth and progression, all processes involving the transcription factor NF-kappaB. NF-kappaB plays a complex role in the control of survival due to the influence of cellular factors acting downstream. We undertook a comparative investi...

journal_title：Carcinogenesis

authors： Tacchini L,De Ponti C,Matteucci E,Follis R,Desiderio MA

更新日期：2004-11-01 00:00:00

abstract：:We examined allelic loss in colon tumors induced by 1,2-dimethylhydrazine (DMH) in F1 hybrid mice, using sequence-tagged microsatellite site (STMS) primers derived from the chromosomal region closely linked to the p53 locus. Polymerase chain reaction--single-strand conformation polymorphism (PCR-SSCP) analysis of 155 ...

journal_title：Carcinogenesis

authors： Okamoto M,Ohtsu H,Miyaki M,Yonekawa H

更新日期：1993-07-01 00:00:00

abstract：:Cancer is a leading cause of death worldwide and environmental factors, including chemicals, have been suggested as major etiological incitements. Cancer statistics indicates that men get more cancer than women. However, differences in the known risk factors including life style or occupational exposure only offer par...

journal_title：Carcinogenesis

authors： Ali I,Högberg J,Hsieh JH,Auerbach S,Korhonen A,Stenius U,Silins I

更新日期：2016-10-01 00:00:00

abstract：:Lung cancer continues to be the leading cause of cancer death in the USA and the best example of a cancer with undisputed evidence of environmental risk. However, a genetic contribution to lung cancer has also been demonstrated by studies of familial aggregation, family-based linkage, candidate gene studies and most r...

journal_title：Carcinogenesis

authors： Schwartz AG,Wenzlaff AS,Bock CH,Ruterbusch JJ,Chen W,Cote ML,Artis AS,Van Dyke AL,Land SJ,Harris CC,Pine SR,Spitz MR,Amos CI,Levin AM,McKeigue PM

更新日期：2011-03-01 00:00:00

abstract：:Groups of rats, either dosed with N-nitrosodiethylamine (NDEA) for 10 weeks (from the age of 7 to 17 weeks) or untreated, were fed diets containing either 2% (low fat, LF) or 30% polyunsaturated fat (high fat, HF) on an equicaloric basis from 5 weeks until rats were 43 weeks old. Biochemical parameters were measured d...

journal_title：Carcinogenesis

authors： Hietanen E,Bartsch H,Ahotupa M,Béréziat JC,Bussacchini-Griot V,Cabral JR,Camus AM,Laitinen M,Wild H

更新日期：1991-04-01 00:00:00

abstract：:Genotoxic carcinogens, including 2-acetylaminofluorene (2-AAF), in addition to exerting their genotoxic effects, often cause a variety of non-genotoxic alterations in cells. It is believed that these non-genotoxic effects may be indispensable events in tumorigenesis; however, there is insufficient knowledge to clarify...

journal_title：Carcinogenesis

authors： Bagnyukova TV,Tryndyak VP,Montgomery B,Churchwell MI,Karpf AR,James SR,Muskhelishvili L,Beland FA,Pogribny IP

更新日期：2008-03-01 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 oxidative metabolites of estrogen have been proposed to play an important role in the development of some human cancers. The two major pathways of estrogen metabolism, to the carcinogenic 4-hydroxyestradiol (4-OHE2) and to the non-carcinogenic 2-hydroxyestradiol (2-OHE2), are mediated by cytochromes P450 CYP1B1 an...

journal_title：Carcinogenesis

authors： Husbeck B,Powis G

更新日期：2002-10-01 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：:The bioactivation of cyclopenta[cd]pyrene (CPP) was investigated to determine the major DNA adduct-forming metabolite(s) of this widespread environmental contaminant and suspect carcinogen. DNA adducts were analyzed by 32P-postlabeling. Four major and at least seven minor adducts formed when CPP was incubated with cal...

journal_title：Carcinogenesis

authors： Beach AC,Gupta RC

更新日期：1994-05-01 00:00:00

abstract：:The metabolism of zymosterol and mevalonic acid was studied in vitro using the skin homogenates of 3-methylcholanthrene (3MC), diazacholesterol-treated and untreated mice. In normal mouse skin only lathosterol was a major metabolite and the other metabolites, cholesta-5,7,24-trien-3 beta-ol, desmosterol, cholesterol a...

journal_title：Carcinogenesis

authors： Tanimoto Y,Fukao K,Yoshiga K,Takada K,Ohyama Y,Okuda K

更新日期：1990-09-01 00:00:00

abstract：:Transforming growth factors alpha and beta (TGF-alpha and TGF-beta) isolated from normal mouse kidney induced gross morphological changes in rat urothelial cells maintained in organ culture. These morphological effects are similar to those observed after long-term treatment of rat bladder organ cultures with the carci...

journal_title：Carcinogenesis

authors： Knowles MA,Hicks RM,Dave H,Harvey AE,Roberts AB,Sporn MB

更新日期：1985-04-01 00:00:00

abstract：:It is now unanimously accepted that neoplastic cells tend to become less susceptible to the growth regulatory effects of transforming growth factor-beta1 (TGF-beta1), mainly because of reduced expression and/or activity of TGF-beta1-specific receptors, as reported for many human cancers including colon cancer. Consequ...

journal_title：Carcinogenesis

authors： Biasi F,Mascia C,Poli G

更新日期：2008-05-01 00:00:00

abstract：:The N-hydroxylamine of the carcinogen 2-amino-3-methylimidazolo[4,5-f]quinoline (IQ) covalently bound to calf thymus DNA at pH 7, and the binding was 11% higher under acidic conditions (pH 5). The extent of N-hydroxy-IQ binding to single-stranded polynucleotides at neutral pH was in the following order: polyguanylic a...

journal_title：Carcinogenesis

authors： Snyderwine EG,Roller PP,Adamson RH,Sato S,Thorgeirsson SS

更新日期：1988-06-01 00:00:00

abstract：:A culture method to grow two morphologically distinguishable normal human breast epithelial cell types derived from reduction mammoplasty has been developed. Type I cells were characterized by a more variable cell shape, smooth cell colony boundaries, the expression of epithelial membrane antigen (EMA) and keratin 18 ...

journal_title：Carcinogenesis

authors： Kao CY,Nomata K,Oakley CS,Welsch CW,Chang CC

更新日期：1995-03-01 00:00:00

abstract：:The promoting action of hexachlorocyclohexane (HCH) was evaluated in female Wistar rats by counting the gamma-glutamyltranspeptidase-positive foci which appeared in the liver after diethylnitrosamine (DENA) initiation. Liver tumor promotion by HCH was further confirmed in a long-term tumorigenicity study after DENA pr...

journal_title：Carcinogenesis

authors： Munir KM,Rao KV,Bhide SV

更新日期：1984-04-01 00:00:00

abstract：:Glioblastoma (GBM) is amongst the most aggressive brain tumors with a dismal prognosis. Despite significant advances in the current multimodality therapy including surgery, postoperative radiotherapy (RT) and temozolomide (TMZ)-based concomitant and adjuvant chemotherapy (CT), tumor recurrence is nearly universal with...

journal_title：Carcinogenesis

authors： Vengoji R,Ponnusamy MP,Rachagani S,Mahapatra S,Batra SK,Shonka N,Macha MA

更新日期：2019-03-12 00:00:00

abstract：:The purpose of this work was to study the relative activities and stabilities of phase-I and phase-II drug metabolizing enzymes in incubation mixtures used in vitro genotoxicity testing in order to optimize the conditions of the assay, increase sensitivity and eliminate false negative results. Cytochrome P-450, NADPH-...

journal_title：Carcinogenesis

authors： Paolini M,Tonelli F,Bauer C,Corsi C,Bronzetti G

更新日期：1987-09-01 00:00:00

abstract：:The enzyme O6-methylguanine-DNA methyltransferase repairs alkylation-induced DNA damage, O6-methylguanine and O4-methylthymine, the former being formed more frequently. Previously, by means of gene targeting, we generated mice in which alleles for methyltransferase were disrupted. We now use these mouse lines, which a...

journal_title：Carcinogenesis

authors： Iwakuma T,Sakumi K,Nakatsuru Y,Kawate H,Igarashi H,Shiraishi A,Tsuzuki T,Ishikawa T,Sekiguchi M

更新日期：1997-08-01 00:00:00

abstract：:An iron chelate, ferric ethylenediamine-N,N'-diacetate [Fe(III)-EDDA], was found to produce hydroxyl radicals with hydrogen peroxide, as determined by both a deoxyribose degradation test and electron spin resonance. Hydroxyl radical production was inhibited not only by adding hydroxyl radical scavengers and catalase, ...

journal_title：Carcinogenesis

authors： Liu M,Okada S

更新日期：1994-12-01 00:00:00

abstract：:Plant chlorophylls and carotenoids are highly colored, conjugated polyenes that play central roles in photosynthesis. Other porphyrins (tetrapyrroles), such as cytochromes, which are structurally related to chlorophyll, participate in redox reactions in many living systems. An unexpected new property of tetrapyrroles,...

journal_title：Carcinogenesis

authors： Fahey JW,Stephenson KK,Dinkova-Kostova AT,Egner PA,Kensler TW,Talalay P

更新日期：2005-07-01 00:00:00

abstract：:Peroxisome proliferator-activated receptor (PPAR) gamma is a ligand-activated nuclear receptor that plays a key role in adipogenesis and adipocyte gene expression, and has recently been linked with possible antineoplastic effects in colonic carcinogenesis. PPARgamma2 and gamma3 are two transcripts arising from the PPA...

journal_title：Carcinogenesis

authors： Koh WP,Yuan JM,Van Den Berg D,Ingles SA,Yu MC

更新日期：2006-09-01 00:00:00

abstract：:Adducts produced by modification of DNA with benzo[a]pyrene diolepoxide (BPDE) are known to inhibit both DNA and RNA synthesis. This phenomenon has been used as a method for determining the distribution of carcinogen binding within defined DNA sequences. A critical comparison of different enzyme activities on adducted...

journal_title：Carcinogenesis

authors： Thrall BD,Mann DB,Smerdon MJ,Springer DL

更新日期：1992-09-01 00:00:00

abstract：:Despite advances in detection and treatment for breast cancer (BC), recurrence and death rates remain unacceptably high. Therefore, more convenient diagnostic and prognostic methods still required to optimize treatments among the patients. Here, we report the clinical significance of the serum cathepsin E (CatE) activ...

journal_title：Carcinogenesis

authors： Kawakubo T,Yasukochi A,Toyama T,Takahashi S,Okamoto K,Tsukuba T,Nakamura S,Ozaki Y,Nishigaki K,Yamashita H,Yamamoto K

更新日期：2014-03-01 00:00:00

abstract：:Compounds of nickel(II) and cadmium(II) are carcinogenic to humans and to experimental animals. One frequently discussed mechanism involved in tumor formation is an increase in reactive oxygen species by both metals with the subsequent generation of oxidative DNA damage. In the present study we used human HeLa cells t...

journal_title：Carcinogenesis

authors： Dally H,Hartwig A

更新日期：1997-05-01 00:00:00

abstract：:Remodeling or deregulation of the calcium signaling pathway is a relevant hallmark of cancer including cutaneous melanoma (CM). In this study, using data from a published genome-wide association study (GWAS) from The University of Texas M.D. Anderson Cancer Center, we assessed the role of 41,377 common single-nucleoti...

journal_title：Carcinogenesis

authors： Wang X,Liu H,Xu Y,Xie J,Zhu D,Amos CI,Fang S,Lee JE,Li X,Nan H,Song Y,Wei Q

更新日期：2019-04-29 00:00:00

abstract：:Benzo[a]pyrene diol epoxide (BPDE)-DNA adducts are involved in the induction of p53 mutations and probably in the causation of human lung cancer associated with cigarette smoking. The ratio between CYP1A1 and GST enzyme activities is a critical determinant of the target dose of carcinogenic BPDE and other DNA-reactive...

journal_title：Carcinogenesis

authors： Alexandrov K,Cascorbi I,Rojas M,Bouvier G,Kriek E,Bartsch H

更新日期：2002-12-01 00:00:00