Initiating activity of 3-tert-butyl-4-hydroxyanisole (3-BHA) and its metabolites in two-stage transformation of BALB/3T3 cells.

abstract：:Structural analogs of diethylstilbestrol (DES) with at least one phenolic hydroxyl group are metabolized by prostaglandin H synthase (PHS) from ram seminal vesicle microsomes (RSVM) in vitro in the presence of arachidonic acid (20:4). U.v. spectroscopy revealed the formation of p-quinoid intermediates in incubations o...

journal_title：Carcinogenesis

authors： Degen GH,Metzler M,Sivarajah KS

更新日期：1986-01-01 00:00:00

abstract：:Epidemiological studies have shown that a high incidence of oral cancers is associated with chewing betel quid. Since chromosomal aberrations are involved in many types of cancers, we investigated whether increased frequencies of chromosomal alterations could be detected in the oral mucosa cells of betel quid chewers ...

journal_title：Carcinogenesis

authors： Rupa DS,Eastmond DA

更新日期：1997-12-01 00:00:00

abstract：:This study was designed to investigate the role of the epidermal growth factor receptor (EGFR) and its ligands in chemically induced mouse bladder cancer. Bladder tumours were induced in C57Bl/6 and B6D2F1 mice by treatment with the carcinogen, N:-butyl-N:-(4-hydroxybutyl) nitrosamine (BBN). The levels of mRNA for EGF...

journal_title：Carcinogenesis

authors： el-Marjou A,Delouvée A,Thiery JP,Radvanyi F

更新日期：2000-12-01 00:00:00

abstract：:Reactive oxygen species (ROS) have been implicated in tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) resistance of many cancers. We evaluated the role of peroxiredoxin (Prx) I in TRAIL resistance governed by coupling of nicotinamide adenosine dinucleotide phosphate oxidase (Nox)-derived ROS signaling ...

journal_title：Carcinogenesis

authors： Song IS,Kim SU,Oh NS,Kim J,Yu DY,Huang SM,Kim JM,Lee DS,Kim NS

更新日期：2009-07-01 00:00:00

abstract：:Telomeres maintain chromosomal stability and integrity and are crucial in carcinogenesis. Telomere length is implicated in multiple cancer risk, but the results are conflicting. Genome-wide association studies have identified several genetic loci associated with telomere length in Caucasians. However, the roles of tel...

journal_title：Carcinogenesis

authors： Du J,Zhu X,Xie C,Dai N,Gu Y,Zhu M,Wang C,Gao Y,Pan F,Ren C,Ji Y,Dai J,Ma H,Jiang Y,Chen J,Yi H,Zhao Y,Hu Z,Shen H,Jin G

更新日期：2015-09-01 00:00:00

abstract：:Resveratrol is a phytochemical that has been under consideration for use as a prostate cancer chemopreventive agent. However, the efficacy, as well as the mechanisms of action of resveratrol on prostate cancer prevention, remains largely unknown. This study seeks to address these questions and examine the cancer preve...

journal_title：Carcinogenesis

authors： Wang TT,Hudson TS,Wang TC,Remsberg CM,Davies NM,Takahashi Y,Kim YS,Seifried H,Vinyard BT,Perkins SN,Hursting SD

更新日期：2008-10-01 00:00:00

abstract：:Iron participates in the generation of hydroxyl radicals by the iron-catalyzed Fenton reaction. Its role in estrogen-induced carcinogenesis has been examined in this study by investigating the effects of iron content of hamster diets on tumor induction by estradiol. The renal tumor incidence and number of tumor nodule...

journal_title：Carcinogenesis

authors： Wyllie S,Liehr JG

更新日期：1998-07-01 00:00:00

abstract：:Cancer-associated fibroblasts (CAFs) have been described to play critical roles in initiation, progression and metastasis of various cancers. However, the involvement of CAFs in oral cancer (OC) has not been well addressed. In this study, we demonstrate that CAFs, when cocultured with OC cells (OCCs), produce high lev...

journal_title：Carcinogenesis

authors： Li X,Xu Q,Wu Y,Li J,Tang D,Han L,Fan Q

更新日期：2014-06-01 00:00:00

abstract：:Malondialdehyde (MDA), a product of lipid peroxidation, causes mutations in bacterial and mammalian cells and cancer in rats. MDA reacts with deoxynucleosides in vitro and the monomeric adduct of MDA with deoxyguanosine (M1G-dR) is the major adduct. M1G-dR has been detected in rat and human liver. Random mutagenesis s...

journal_title：Carcinogenesis

authors： Chaudhary AK,Reddy GR,Blair IA,Marnett LJ

更新日期：1996-05-01 00:00:00

abstract：:To better understand the mechanisms of mutagenesis by the carcinogen, methylene chloride (DCM), we have determined the nature and distribution of forward mutations induced by DCM in the N-terminal region of the lacI gene of Escherichia coli. A total of 116 lacI-d mutations (50 from Uvr+, 66 from UvrB- strain) were cha...

journal_title：Carcinogenesis

authors： Zielenska M,Ahmed A,Pienkowska M,Anderson M,Glickman BW

更新日期：1993-05-01 00:00:00

abstract：:In order to study the mechanism of cancer production by aflatoxin B1 (AFB1) in extrahepatic tissues which have relatively low cytochrome P450 monooxygenase (P450) activity, we have examined prostaglandin H synthase (PHS)-mediated AFB1 activation [( 3H]AFB1-DNA binding). [3H]AFB1 was activated by both purified PHS and ...

journal_title：Carcinogenesis

authors： Liu L,Daniels JM,Stewart RK,Massey TE

更新日期：1990-11-01 00:00:00

abstract：:An important difference between chemical agents that induce oxidative damage in DNA and ionizing radiation is that radiation-induced damage is clustered locally on the DNA. Both modelling and experimental studies have predicted the importance of clustering of lesions induced by ionizing radiation and its dependence on...

journal_title：Carcinogenesis

authors： Prise KM,Pullar CH,Michael BD

更新日期：1999-05-01 00:00:00

abstract：:Continuous dietary administration of the hepatocarcinogen 2-acetylaminofluorene (AAF) to rats produces a gradual increase in hepatic DNA adducts until a plateau is reached after approximately 2 weeks. The rate of DNA adduct formation remains constant through 1 month of AAF feeding, while adduct removal profiles are bi...

journal_title：Carcinogenesis

authors： Poirier MC,Fullerton NF,Patterson ED,Beland FA

更新日期：1990-08-01 00:00:00

abstract：:Transforming growth factor-beta 1 (TGF-beta1) plays a significant role in regulating the proliferation and apoptosis of prostate epithelial and stromal cells. We explored the association between the T (Leu) to C (Pro) polymorphism at codon10 of the TGF-beta1 gene (TGFB1) and the risk of prostate cancer (PCa) or benign...

journal_title：Carcinogenesis

authors： Li Z,Habuchi T,Tsuchiya N,Mitsumori K,Wang L,Ohyama C,Sato K,Kamoto T,Ogawa O,Kato T

更新日期：2004-02-01 00:00:00

abstract：:Our previous report demonstrated that RSK2 plays an important role in cell proliferation and transformation induced by tumor promoters such as epidermal growth factor mediated through the N-terminal kinase domain of RSK2 in JB6 Cl41 mouse skin epidermal cells in vitro. However, no direct evidence has been reported reg...

journal_title：Carcinogenesis

authors： Cho YY,Lee MH,Lee CJ,Yao K,Lee HS,Bode AM,Dong Z

更新日期：2012-12-01 00:00:00

abstract：:The expression of cytochrome (CYP) P450 enzymes in human oesophageal mucosa was investigated in a total of 25 histologically non-neoplastic surgical tissue specimens by using specific antibodies in immunoblots and by RT-PCR mRNA analysis. The presence of CYP1A, 2E1, 3A and 4A enzymes was demonstrated by both technique...

journal_title：Carcinogenesis

authors： Lechevrel M,Casson AG,Wolf CR,Hardie LJ,Flinterman MB,Montesano R,Wild CP

更新日期：1999-02-01 00:00:00

abstract：:Human fibroblasts were embedded in microscopic-sized agarose beads and lysed in situ to produce chromosome-sized DNA trapped inside the beads. Conventional alkaline agarose gel electrophoresis of trapped DNA from cells damaged by X-rays before embedding gave mol. wts similar to those obtained with alkaline sucrose gra...

journal_title：Carcinogenesis

authors： Cleaver JE

更新日期：1989-09-01 00:00:00

abstract：:The anti-neoplastic agent procarbazine is genetically active in a variety of short term mutagenicity tests, and it also possesses carcinogenic and teratogenic potential. This compound has consistently yielded false negative results in in vitro microbial mutagenicity tests in the presence and absence of mammalian metab...

journal_title：Carcinogenesis

authors： Gatehouse DG,Paes DJ

更新日期：1983-01-01 00:00:00

abstract：:Oltipraz (OPZ) is a potent chemopreventive agent against chemically-induced carcinogenesis in several animal models. It affects the expression and/or activity of xenobiotic-metabolizing enzymes and its effects are altered in the course of inflammation in liver. The present study was undertaken to analyse the effect of...

journal_title：Carcinogenesis

authors： Le Ferrec E,Ilyin G,Mahéo K,Bardiau C,Courtois A,Guillouzo A,Morel F

更新日期：2001-01-01 00:00:00

abstract：:O6-Methylguanine (O6MeGua) is generally regarded as the most important premutagenic lesion formed from carcinogenic methylating agents, so its structure and mechanism of action have received considerable attention. Two conformations for the methyl group in O6MeGua are possible: in one the methyl group is syn with resp...

journal_title：Carcinogenesis

authors： Loechler EL

更新日期：1991-09-01 00:00:00

abstract：:The ability of cytosolic 3-methylcholanthrene binding proteins from rat liver to interact with DNA was studied using DNA-cellulose chromatography. Two DNA binding fractions, eluting in 0.15 M KCl (peak 1) and 0.33 M KCl (peak 2), were observed on salt elution from a denatured DNA-cellulose column which had been incuba...

journal_title：Carcinogenesis

authors： Weaver D,Amos A,Tierney B,Bresnick E

更新日期：1980-06-01 00:00:00

abstract：:Carcinogenesis develops in stages that have been operationally defined as initiation, promotion and progression. Although morphological end points have been described for detection and quantitation of these stages, to date initiation has been assessed only in the context of clonal growth in response to certain promoti...

journal_title：Carcinogenesis

authors： Dragan YP,Campbell HA,Baker K,Vaughan J,Mass M,Pitot HC

更新日期：1994-11-01 00:00:00

abstract：:It has previously been proposed that redox cycling between catechol estrogens and their quinones, mediated by cytochrome P450, could lead to the generation of free radicals that would subsequently cause oxidative damage to DNA and proteins that might have a role in hormonal carcinogenesis. Alternative, non-enzymatic m...

journal_title：Carcinogenesis

authors： Li Y,Trush MA,Yager JD

更新日期：1994-07-01 00:00:00

abstract：:Microsatellite instability (MSI) is present in ulcerative colitis (UC) and colitis-associated colorectal cancers (CAC). Certain factors released by polymorphonuclear cells (PMNs) may drive mucosal frameshift mutations resulting in MSI and cancer. Here, we applied a co-culture system with PMNs and colon epithelial cell...

journal_title：Carcinogenesis

authors： Granofszky N,Lang M,Khare V,Schmid G,Scharl T,Ferk F,Jimenez K,Knasmüller S,Campregher C,Gasche C

更新日期：2018-02-09 00:00:00

abstract：:The resistant hepatocyte model was used to study expression of tumor-associated aldehyde dehydrogenase (ALDH) activity during the course of rat hepatocarcinogenesis. The hepatic ALDH phenotype was determined at intervals over 280 days by histochemical analysis, total ALDH activity assays and gel electrophoresis, using...

journal_title：Carcinogenesis

authors： Jones DE Jr,Evces S,Lindahl R

更新日期：1984-12-01 00:00:00

abstract：:The JB6 mouse epidermal cell system has been extensively used as an in vitro model for the study of tumor promotion. The present study aimed to assess the relevance of monolayer measurements to the process of transformation, which is induced more efficiently under anchorage-independent (AI) conditions. Although it wou...

journal_title：Carcinogenesis

authors： Dong Z,Cmarik JL,Wendel EJ,Colburn NH

更新日期：1994-05-01 00:00:00

abstract：:Previously we have reported the development of a model in vitro system for the study of osteosarcoma. In this system, when chick periosteal explants are infected with Fujinami sarcoma virus (FSV), osteosarcoma-like tissue is formed. In the present study, a series of histopathologic parameters of neoplastic transformat...

journal_title：Carcinogenesis

authors： Birek C,Pawson T,McCulloch CA,Tenenbaum HC

更新日期：1988-10-01 00:00:00

abstract：:Aloe-emodin (AE), one of the main bioactive anthraquinones of Rheum palmatum, possesses potent antitumor properties. Our previous proteomic study revealed that AE-induced apoptosis was associated with oxidative stress and oxidation of many redox-sensitive proteins. In this study, we aimed to further dissect the cell d...

journal_title：Carcinogenesis

authors： Lu GD,Shen HM,Chung MC,Ong CN

更新日期：2007-09-01 00:00:00

abstract：:Apoptosis, a form of programmed cell death, plays a fundamental role in the maintenance of tissues and organ systems by providing a controlled cell deletion to balanced cell proliferation. The last decade has witnessed an exponential increase in the number of studies investigating how different components of the diet ...

journal_title：Carcinogenesis

authors： Khan N,Afaq F,Mukhtar H

更新日期：2007-02-01 00:00:00

abstract：:We hypothesized that superoxide from Kupffer cells (KC) contributes to hepatocarcinogenesis. p47phox(-/-) mice, deficient in phagocyte NADPH oxidase and superoxide generation, received a single dose of the hepatocarcinogen diethylnitrosamine (DEN). The following hepatic effects were observed at time points between 30 ...

journal_title：Carcinogenesis

authors： Teufelhofer O,Parzefall W,Kainzbauer E,Ferk F,Freiler C,Knasmüller S,Elbling L,Thurman R,Schulte-Hermann R

更新日期：2005-02-01 00:00:00