Effects of ethinyl estradiol and tamoxifen on liver DNA turnover and new synthesis and appearance of gamma glutamyl transpeptidase-positive foci in female rats.

abstract：:Thymidine kinase (TK), the enzyme in the pyrimidine salvage pathway, and its isozymes were examined in 15 specimens of normal mucosa, 14 polyps and 14 carcinomas in human colon. The average TK activities in colon polyps and carcinomas were about 1.6 and 2.9 times that in normal colon mucosa, respectively. The colon TK...

journal_title：Carcinogenesis

authors： Sakamoto S,Sagara T,Iwama T,Kawasaki T,Okamoto R

更新日期：1985-06-01 00:00:00

abstract：:Macrophages and their immortalized cell lines can be activated to form nitrite and nitrate via oxidation of arginine and this is accompanied by the formation of N-nitroso compounds. The mechanism of nitrosamine formation has been investigated through the use of compounds which are known either to inhibit or enhance ac...

journal_title：Carcinogenesis

authors： Kosaka H,Wishnok JS,Miwa M,Leaf CD,Tannenbaum SR

更新日期：1989-03-01 00:00:00

abstract：:Procarbazine hydrochloride (PCZ), a chemotherapeutic agent used extensively to treat Hodgkins disease and other tumors, induces leukemia, lymphoma, mammary gland and other solid tumors in rodents and non-human primates and is strongly implicated as a leukemogen in humans. Lipotrope (choline and methionine) deficiency ...

journal_title：Carcinogenesis

authors： Rogers AE,Akhtar R,Zeisel SH

更新日期：1990-09-01 00:00:00

abstract：:The present study was aimed at verifying the occurrence, if any, of in vivo oxidative DNA damage in FA homozygotes, their parents and siblings. 8-Hydroxy-2'-deoxyguanosine (8-OHdG) was measured, by HPLC/EC, in DNA from circulating blood leucocytes from FA homozygotes and their relatives and compared with a group of pa...

journal_title：Carcinogenesis

authors： Degan P,Bonassi S,De Caterina M,Korkina LG,Pinto L,Scopacasa F,Zatterale A,Calzone R,Pagano G

更新日期：1995-04-01 00:00:00

abstract：:Propylene oxide, a widely used monofunctional alkylating agent, has been shown to be genotoxic in in vitro test systems and induces tumors in the nasal tissues of experimental animals. Propylene oxide, like related alkylating agents, forms several different adducts with DNA bases, but predominantly at the 7-position o...

journal_title：Carcinogenesis

authors： Plna K,Nilsson R,Koskinen M,Segerbäck D

更新日期：1999-10-01 00:00:00

abstract：:Stimulation of cell proliferation caused by peroxisome proliferators was blocked by antibodies against TNF alpha and agents that inactivate Kupffer cells, a rich source of TNF alpha, which supports the hypothesis that Kupffer cells play a pivotal role in peroxisome proliferator-induced hyperplasia. Here, the ability o...

journal_title：Carcinogenesis

authors： Rusyn I,Tsukamoto H,Thurman RG

更新日期：1998-07-01 00:00:00

abstract：:Epidemiological studies have suggested that frequent olive oil consumption may be a protective factor against lung cancer formation. Squalene, a characteristic compound in olive oil, is an inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A reductase activity and has been proposed to inhibit the farnesylation of ras on...

journal_title：Carcinogenesis

authors： Smith TJ,Yang GY,Seril DN,Liao J,Kim S

更新日期：1998-04-01 00:00:00

abstract：:Groups of male and female IF strain mice were fed a diet containing either 0.5% or 1.0% paracetamol for up to 18 months. Among male mice fed the higher dose, the total liver cell tumour incidence was 87%, 21.7% developing hepatocellular carcinomas: both yields were statistically significant. The corresponding incidenc...

journal_title：Carcinogenesis

authors： Flaks A,Flaks B

更新日期：1983-01-01 00:00:00

abstract：:The underlying molecular mechanisms of the tumor-promoting activity of bile acids such as chenodeoxycholic acid (CDCA) and deoxycholic acid (DCA) and the protective effect of ursodeoxycholic acid (UDCA) remain largely unclear. Using RNA arbitrarily primed PCR (RAP-PCR) for differential display, we identified, cloned a...

journal_title：Carcinogenesis

authors： Jung B,Vogt T,Mathieu-Daudé F,Welsh J,McClelland M,Trenkle T,Weitzel C,Kullmann F

更新日期：1998-11-01 00:00:00

abstract：:Bacterial formation of carcinogenic N-nitroso compounds may play a role in the etiology of human cancer. Biochemical and immunological studies in denitrifying bacteria (Pseudomonas aeruginosa) strongly support the identification of cytochrome cd(1)-nitrite reductase as the enzyme responsible for the catalysis of nitro...

journal_title：Carcinogenesis

authors： Calmels S,Ohshima H,Henry Y,Bartsch H

更新日期：1996-03-01 00:00:00

abstract：:Colonic epithelial cell migration is required for normal differentiated cell function. This migratory phenotype is dependent upon wild-type adenomatous polyposis coli (Apc) expression. Non-tumorigenic murine colon epithelial cell lines with distinct Apc genotypes, i.e. young adult mouse colon (YAMC; Apc(+/+)) and immo...

journal_title：Carcinogenesis

authors： Fenton JI,Wolff MS,Orth MW,Hord NG

更新日期：2002-06-01 00:00:00

abstract：:Application of 5 nmol 12-O-tetradecanoylphorbol-13-acetate (TPA) to the skin of female CD-1 mice led to a rapid increase in the concentration of epidermal ornithine decarboxylase (ODC) mRNA from an undetectable level in control mice to a high maximum level at 4-5 h after TPA administration. The concentration of epider...

journal_title：Carcinogenesis

authors： Lu YP,Chang RL,Huang MT,Conney AH

更新日期：1993-02-01 00:00:00

abstract：:Insulin-like growth factor-binding protein (IGFBP)-3 is overexpressed frequently in esophageal squamous cell carcinoma. Yet, the role of IGFBP3 in esophageal tumor biology remains to be elucidated. We find that IGFBP3 facilitates transforming growth factor (TGF)-beta1-mediated epithelial-to-mesenchymal transition (EMT...

journal_title：Carcinogenesis

authors： Natsuizaka M,Ohashi S,Wong GS,Ahmadi A,Kalman RA,Budo D,Klein-Szanto AJ,Herlyn M,Diehl JA,Nakagawa H

更新日期：2010-08-01 00:00:00

abstract：:Azido-PhIP (2-azido-1-methyl-6-phenylimidazo[4,5-b]pyridine) and nitro-PhIP (2-nitro-1-methyl-6-phenylimidazo[4,5-b]pyridine) have been synthesized and characterized chemically. The mutagenic potencies of azido-PhIP (with photoactivation by near UV irradiation), of nitro-PhIP (without exogenous activation) and of the ...

journal_title：Carcinogenesis

authors： Wild D,Watkins BE,Vanderlaan M

更新日期：1991-06-01 00:00:00

abstract：:MicroRNA deregulation and pathway alterations have been implicated in nasopharyngeal carcinoma (NPC), a highly invasive and metastatic cancer widely prevalent in Southern China. In this study, we report that miR-9 is commonly downregulated in NPC specimens and NPC cell lines with important functional consequences. The...

journal_title：Carcinogenesis

authors： Lu J,Luo H,Liu X,Peng Y,Zhang B,Wang L,Xu X,Peng X,Li G,Tian W,He ML,Kung H,Li XP

更新日期：2014-03-01 00:00:00

abstract：:The P53 tumor suppressor pathway plays an important role in cancer development. The auto-regulatory feedback mechanism of the P53 and MDM2 expression is critical in keeping proper tumor suppressor function of this pathway. This study examined the effect of P53 Arg72Pro variants on transactivation of polymorphic MDM2 p...

journal_title：Carcinogenesis

authors： Yang M,Guo Y,Zhang X,Miao X,Tan W,Sun T,Zhao D,Yu D,Liu J,Lin D

更新日期：2007-09-01 00:00:00

abstract：:The three human leukocyte antigen (HLA) class I antigens, HLA-A, HLA-B and HLA-C, play important roles in the elimination of transformed cells by cytotoxic T cells. Frequent loss of expression of these antigens at the cell surface has been observed in many human cancers. Various mechanisms for post-transcriptional reg...

journal_title：Carcinogenesis

authors： Nie Y,Yang G,Song Y,Zhao X,So C,Liao J,Wang LD,Yang CS

更新日期：2001-10-01 00:00:00

abstract：:Recent studies have demonstrated that K-ras mutations in lung epithelial cells elicit inflammation that promotes carcinogenesis in mice (intrinsic inflammation). The finding that patients with chronic obstructive pulmonary disease (COPD), an inflammatory disease of the lung, have an increased risk of lung cancer after...

journal_title：Carcinogenesis

authors： Moghaddam SJ,Barta P,Mirabolfathinejad SG,Ammar-Aouchiche Z,Garza NT,Vo TT,Newman RA,Aggarwal BB,Evans CM,Tuvim MJ,Lotan R,Dickey BF

更新日期：2009-11-01 00:00:00

abstract：:The mutagenicities of 2-aminodipyrido [1,2-a:3',2'-d] imidazole (Glu-P-2, a mutagen obtained from pyrolysate of glutamic acid) and six methyl substituted derivatives of Glu-P-2 were tested with Salmonella typhimurium TA98 and TA100 with S-9 mix. Glu-P-1 (6-Me-Glu-P-2) was the strongest mutagen to TA98 and TA100. 3-Me-...

journal_title：Carcinogenesis

authors： Takeda K,Shudo K,Okamoto T,Nagao M,Wakabayashi K,Sugimura T

更新日期：1980-01-01 00:00:00

abstract：:This study was undertaken to investigate the hypothesis linking peroxisome proliferation with the production of reactive oxygen species and subsequent DNA damage. Hepatic peroxisomal proliferation was induced in male Wistar-derived rats by the administration of clofibrate, methyl clofenapate, di(2-ethylhexyl)phthalate...

journal_title：Carcinogenesis

authors： Elliott BM,Elcombe CR

更新日期：1987-09-01 00:00:00

abstract：:gamma-Glutamyl transpeptidase (gamma GT) positive hepatocytes were isolated from F344 male rats fed 2-acetylaminofluorene. The isolation procedure is rapid and highly selective for cells exhibiting gamma GT on their surface. Suspensions of liver cells obtained from perfusion in situ with a collagenase solution were in...

journal_title：Carcinogenesis

authors： Hanigan HM,Pitot HC

更新日期：1982-01-01 00:00:00

abstract：:Lung cancer is the leading cause of cancer-related mortality, with most cases attributed to tobacco smoking, in which nicotine-derived nitrosamine ketone (NNK) is the most potent lung carcinogen. The ADAM17 protease is responsible for the ectodomain shedding of many pro-tumorigenic cytokines, growth factors and recept...

journal_title：Carcinogenesis

authors： Saad MI,McLeod L,Yu L,Ebi H,Ruwanpura S,Sagi I,Rose-John S,Jenkins BJ

更新日期：2020-06-17 00:00:00

abstract：UNLABELLED:Mitogen-activated protein kinase-activated protein kinase 2 (MAPKAPK2) is recognized as oncogenic and simulative role on tumorigenesis by virtue of abnormal expression in cancer including nasopharyngeal carcinoma (NPC). We hypothesized that the copy number variation (CNV)-30450, which duplicates the MAPKAPK2...

journal_title：Carcinogenesis

authors： Yang L,Liu B,Qiu F,Huang B,Li Y,Huang D,Yang R,Yang X,Deng J,Jiang Q,Zhou Y,Lu J

更新日期：2014-01-01 00:00:00

abstract：:Diglycerides function as analogs of the phorbol ester tumor promoters. We compare here the activity of glycerol 1-myristate 2-acetate (GMA) with the corresponding phorbol 12-myristate 13-acetate (PMA). GMA inhibited phorbol ester binding to reconstituted protein kinase C, stimulated protein kinase C enzymatic activity...

journal_title：Carcinogenesis

authors： Sharkey NA,Blumberg PM

更新日期：1986-04-01 00:00:00

abstract：:3-Methyladenine is one of the major products formed by reaction of a large number of environmental methylating agents with DNA in vivo and in vitro. In spite of the rapid spontaneous depurination of this base an enzyme, 3-methyladenine DNA glycosylase, has been shown to catalyse its excision. The relevance of this enz...

journal_title：Carcinogenesis

authors： Craddock VM,Henderson AR

更新日期：1982-01-01 00:00:00

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：:The naturally occurring anticarcinogens flavone and alpha-angelicalactone incorporated separately and simultaneously in the diet at 0.5, 0.1, 0.05 and 0.01% w/w, were studied with respect to their effects on oesophageal, gastric, intestinal, colonic and hepatic (i) glutathione S-transferase (GST) enzyme activity, (ii)...

journal_title：Carcinogenesis

authors： Nijhoff WA,Bosboom MA,Smidt MH,Peters WH

更新日期：1995-03-01 00:00:00

abstract：:The genetic factors that mediate the pathogenesis of multiple primary cutaneous basal cell carcinomas (BCC) are largely unclear. Thus, some patients suffer many BCC (>30) and/or rapid accrual (number of tumours/year from first presentation) of further lesions. We have studied, in 827 English Caucasians, the influence ...

journal_title：Carcinogenesis

authors： Lear JT,Heagerty AH,Smith A,Bowers B,Payne CR,Smith CA,Jones PW,Gilford J,Yengi L,Alldersea J,Fryer AA,Strange RC

更新日期：1996-09-01 00:00:00

abstract：:Cryptic deletions at chromosome 6q are common cytogenetic abnormalities in T-cell lymphoblastic leukemia/lymphoma (T-LBL), but the target genes have not been formally identified. Our results build on detection of specific chromosomal losses in a mouse model of γ-radiation-induced T-LBLs and provide interesting clues f...

journal_title：Carcinogenesis

authors： López-Nieva P,Vaquero C,Fernández-Navarro P,González-Sánchez L,Villa-Morales M,Santos J,Esteller M,Fernández-Piqueras J

更新日期：2012-02-01 00:00:00

abstract：:The metastasis suppressor, N-myc downstream-regulated gene-1 (NDRG1), plays multifaceted roles in inhibiting oncogenic signaling and can suppress the epithelial mesenchymal transition (EMT), a key step in metastasis. In this investigation, NDRG1 inhibited the oncogenic effects of transforming growth factor-β (TGF-β) i...

journal_title：Carcinogenesis

authors： Menezes SV,Fouani L,Huang MLH,Geleta B,Maleki S,Richardson A,Richardson DR,Kovacevic Z

更新日期：2019-07-06 00:00:00