Enhancement of rat hepatic and gastrointestinal glutathione and glutathione S-transferases by alpha-angelicalactone and flavone.

abstract：:We previously demonstrated that a single dose of gamma-radiation (350 rads) was able to induce thymic lymphomas in C57BL mice when followed by promoting treatment with oral cyclosporine (CsA), a non-genotoxic immunosuppressant. We have now tested the efficacy of various doses of gamma-radiation as an initiator of CsA ...

journal_title：Carcinogenesis

authors： Yabu K,Warty VS,Gorelik E,Shinozuka H

更新日期：1991-01-01 00:00:00

abstract：:This report shows that generation of hydrogen peroxide (H2O2) by human polymorphonuclear leukocytes (PMNs) activated with tumor promoters of varying potency as first and second stage promoters correlates well with activities of these promoters in vivo. Those tested were 12-O-tetradecanoylphorbol-13-acetate (TPA), a co...

journal_title：Carcinogenesis

authors： Frenkel K,Chrzan K

更新日期：1987-03-01 00:00:00

abstract：:Vinyl chloride (VC) is a carcinogen associated with human and animal cancers. The ultimate carcinogenic form of VC, 2-chloroacetaldehyde (CAA), has been suspected to be mutagenic and we confirmed the mutagenicity of CAA using a modified shuttle vector plasmid. Base sequence analyses of 109 mutant plasmids with mutatio...

journal_title：Carcinogenesis

authors： Matsuda T,Yagi T,Kawanishi M,Matsui S,Takebe H

更新日期：1995-10-01 00:00:00

abstract：:One hundred forty-seven female Sprague-Dawley rats were divided into 5 groups and at 60 days of age were treated i.g. with 5 mg of 7,12-dimethylbenzanthracene (DMBA) suspended in 1.0 ml of sesame oil. Selenium (Se), as selenium dioxide (SeO2), was administered in the drinking water to 4 of the 5 groups (30 rats/group)...

journal_title：Carcinogenesis

authors： Welsch CW,Goodrich-Smith M,Brown CK,Greene HD,Hamel EJ

更新日期：1981-01-01 00:00:00

abstract：:Metabolites of 15,16-dihydrocyclopenta[a]phenanthren-17-one and its 1- and 12-methyl homologues (all non-carcinogens) along with those from the 11-methyl and 11,12-dimethyl-17-ketones (carcinogens), produced in vitro by hepatic microsomes from methylcholanthrene induced rats, were separated by reverse phase h.p.l.c. I...

journal_title：Carcinogenesis

authors： Coombs MM,Russell JC,Jones JR,Ribeiro O

更新日期：1985-08-01 00:00:00

abstract：:Abnormalities in the expression of DMBT1 (deleted in malignant brain tumors 1) have been implicated in the development of esophageal, gastric and colorectal cancers of the alimentary tract, but the underlying mechanism remains unclear. In the present study, using the gastric cell line AGS, we identified two intracellu...

journal_title：Carcinogenesis

authors： Kang W,Nielsen O,Fenger C,Leslie G,Holmskov U,Reid KB

更新日期：2005-06-01 00:00:00

abstract：:The effect of phenobarbital (PB), p,p'-dichlorodiphenyltrichloroethane (DDT) or carbon tetrachloride (CCl4) on dimethylnitrosamine (DMN)-induced hepatocarcinogenesis in Syrian golden hamsters was examined. Hamsters were given a single injection of DMN (6 mg/kg body wt) followed by either PB or DDT in the diet or repea...

journal_title：Carcinogenesis

authors： Tanaka T,Mori H,Williams GM

更新日期：1987-09-01 00:00:00

abstract：:Although the human O6-alkylguanine-DNA alkyltransferase (AGT) is very sensitive to inactivation by O6-benzylguanine (BG) or 2,4-diamino-6-benzyloxy-5-nitrosopyrimidine (5-nitroso-BP), the equivalent protein formed by the carboxyl terminal domain of the product of the Escherichia coli ada gene (Ada-C) is unaffected by ...

journal_title：Carcinogenesis

authors： Crone TM,Kanugula S,Pegg AE

更新日期：1995-08-01 00:00:00

abstract：:Reduced retinyl ester synthesis has been associated with several forms of cancer; we therefore proposed studying melanoma development from the perspective of this biochemical pathway. Cultures of human melanoma cells with fibroblastoid morphology showed negligible retinyl ester synthesis; in sharp contrast, those with...

journal_title：Carcinogenesis

authors： Simmons DP,Andreola F,De Luca LM

更新日期：2002-11-01 00:00:00

abstract：:We investigated, in a cloned hamster tracheal epithelial cell line HTE-B, the effects of inhibitors of DNA topoisomerase, novobiocin and nalidixic acid; of DNA polymerase, 1-beta-arabinofuranosylcytosine (ara-C) and 2',3'-dideoxythymidine; of ribonucleotide reductase, hydroxyurea; and of poly(ADP-ribose)synthetase, 3-...

journal_title：Carcinogenesis

authors： Ireland CM,Eastman A,Bresnick E

更新日期：1984-02-01 00:00:00

abstract：:Measurements were made of the effects of phenolic compounds, some of which are present in the human diet, on the nitrosation of proline by nitrite to give N-nitrosoproline (NPRO). In vitro, resorcinol, catechin, p-nitrosophenol and phenol were catalysts and chlorogenic acid an inhibitor; guaiacol showed a marginal cat...

journal_title：Carcinogenesis

authors： Pignatelli B,Bereziat JC,Descotes G,Bartsch H

更新日期：1982-01-01 00:00:00

abstract：:Well-differentiated squamous cell carcinomas were induced in hamster buccal pouch epithelium by twice weekly topical applications of N-methyl-N-benzylnitrosamine (MBN) or 7,12-dimethylbenz[a]anthracene (DMBA) over a period of 15 weeks. Each of the 22 tumors induced (14 MBN and eight DMBA) were evaluated by single-stra...

journal_title：Carcinogenesis

authors： Chang KW,Lin SC,Koos S,Pather K,Solt D

更新日期：1996-03-01 00:00:00

abstract：:Studies with experimental animals indicate that acetaldehyde, the first metabolite of ethanol that is microbially formed in the colonic lumen, may play a role in ethanol-associated colorectal co-carcinogenesis. Although intracoIonic acetaldehyde concentrations are highest during the metabolism of exogenous ethanol, so...

journal_title：Carcinogenesis

authors： Koivisto T,Salaspuro M

更新日期：1998-11-01 00:00:00

abstract：:MicroRNAs (miRNAs) are endogenous non-coding RNAs, which play an essential role in the regulation of gene expression during carcinogenesis. The role of miRNAs in breast cancer has been thoroughly investigated, and although many miRNAs are identified as cancer related, little is known about their involvement in benign ...

journal_title：Carcinogenesis

authors： Tahiri A,Leivonen SK,Lüders T,Steinfeld I,Ragle Aure M,Geisler J,Mäkelä R,Nord S,Riis ML,Yakhini Z,Kleivi Sahlberg K,Børresen-Dale AL,Perälä M,Bukholm IR,Kristensen VN

更新日期：2014-01-01 00:00:00

abstract：:Male Sprague-Dawley rats were fed a cube diet containing 2.51 mmol/kg 3'-hydroxymethyl-N,N-dimethyl-4-aminoazobenzene (3'-CH2OH-DAB) for a period of 1 or 3 months. (This is the molar equivalent of 0.06% 3'-Me-DAB in the diet). The oral administration of 3'-CH2OH-DAB for 3 months resulted in a high incidence of liver t...

journal_title：Carcinogenesis

authors： Mori Y,Niwa T,Toyoshi K,Nagai H,Koda A,Kawada K,Ojima A,Takahashi Y

更新日期：1980-06-01 00:00:00

abstract：:Oxidized DNA base lesions, such as thymine glycol (Tg) and 8-hydroxyguanine, are often toxic and mutagenic and have been implicated in carcinogenesis. To clarify whether NEIL1 protein, which exhibits excision repair activity towards such base lesions, is involved in gastric carcinogenesis, we examined 71 primary gastr...

journal_title：Carcinogenesis

authors： Shinmura K,Tao H,Goto M,Igarashi H,Taniguchi T,Maekawa M,Takezaki T,Sugimura H

更新日期：2004-12-01 00:00:00

abstract：:The HSP70 family of heat shock proteins consists of molecular chaperones of approximately 70kDa in size that serve critical roles in protein homeostasis. These adenosine triphosphatases unfold misfolded or denatured proteins and can keep these proteins in an unfolded, folding-competent state. They also protect nascent...

journal_title：Carcinogenesis

authors： Murphy ME

更新日期：2013-06-01 00:00:00

abstract：:X-ray repair cross-complementing group 1 (XRCC1) and xeroderma pigmentosum group D (XPD) are mainly involved in base excision repair (BER) and nucleotide excision repair (NER) of DNA repair pathways, respectively. Polymorphisms of DNA repair gene XRCC1 and XPD has recently been identified, and there is a growing body ...

journal_title：Carcinogenesis

authors： Chen S,Tang D,Xue K,Xu L,Ma G,Hsu Y,Cho SS

更新日期：2002-08-01 00:00:00

abstract：:Dihydrodiol dehydrogenase (DD) has been shown to catalyze the oxidation of (+/-)-trans-7,8-dihydroxy-7,8-dihydrobenzo [a]pyrene (BP-diol) to yield benzo[a]pyrene-7,8-dione (BPQ) in uninduced fortified rat liver S100 fractions but the formation of BPQ has not been observed in whole cells. In these studies [3H]BP-diol w...

journal_title：Carcinogenesis

authors： Flowers-Geary L,Harvey RG,Penning TM

更新日期：1995-11-01 00:00:00

abstract：:Experiments were conducted to determine whether the natural estrogen and an environmental compound with estrogenic action, 4-n-octylphenol (4nOP), could modify tumor development in human c-Ha-ras proto-oncogene transgenic (Tg) rats which are highly susceptible to mammary and skin carcinogens. Female and male Tg and no...

journal_title：Carcinogenesis

authors： Han BS,Fukamachi K,Takasuka N,Ohnishi T,Maeda M,Yamasaki T,Tsuda H

更新日期：2002-07-01 00:00:00

abstract：:Male rats were treated with [ring-3H]N-acetyl-2-aminofluorene and sacrificed at different periods of time after a single i.p. dose. Chromatin was isolated from liver homogenates and treated with RNAse and proteinase K. The resulting crude DNA was purified as the N-hexadecyl-N-trimethylammonium salt. The amounts of 2-a...

journal_title：Carcinogenesis

authors： Visser A,Westra JG

更新日期：1981-01-01 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：:Women who carry the BRCA mutation are at high lifetime risk of breast cancer, but there is no consensus regarding an effective and safe chemoprevention strategy. A large body of evidence suggests that 3,3-diindolylmethane (DIM), a dimer of indole-3-carbinol found in cruciferous vegetables, can potentially prevent carc...

journal_title：Carcinogenesis

authors： Yerushalmi R,Bargil S,Ber Y,Ozlavo R,Sivan T,Rapson Y,Pomerantz A,Tsoref D,Sharon E,Caspi O,Grubsrein A,Margel D

更新日期：2020-10-15 00:00:00

abstract：:Cancer health disparities remain stubbornly entrenched in the US health care system. The Affordable Care Act was legislation to target these disparities in health outcomes. Expanded access to health care, reduction in tobacco use, uptake of other preventive measures and cancer screening, and improved cancer therapies ...

journal_title：Carcinogenesis

authors： Minas TZ,Kiely M,Ajao A,Ambs S

更新日期：2020-11-13 00:00:00

abstract：:FEZ1/LZTS1 is a tumor suppressor gene that is frequently altered in human cancers of different histotypes. We have reported previously that LZTS1 is downregulated in high-grade bladder cancer and that its restoration suppresses tumorigenicity in urothelial carcinoma cells. To further investigate the role of LZTS1 in t...

journal_title：Carcinogenesis

authors： Baffa R,Fassan M,Sevignani C,Vecchione A,Ishii H,Giarnieri E,Iozzo RV,Gomella LG,Croce CM

更新日期：2008-04-01 00:00:00

abstract：:A large series of assays of the hepatocarcinogenic potential of 112 different compounds were carried out using a rapid bioassay system developed in this laboratory based on the two-step concept of hepatocarcinogenesis. Rats were initially given a single dose (200 mg/kg) of diethylnitrosamine (DEN) i.p. and starting 2 ...

journal_title：Carcinogenesis

authors： Ito N,Tsuda H,Tatematsu M,Inoue T,Tagawa Y,Aoki T,Uwagawa S,Kagawa M,Ogiso T,Masui T

更新日期：1988-03-01 00:00:00

abstract：:The activation of 2-nitrofluorene (2-NF) to reactive intermediates that bind covalently to DNA, RNA and protein has been investigated both in vitro and in the rat in vivo. In vitro, such binding was catalyzed by the hepatic microsomal fraction, was NADPH dependent and could be inhibited by SKF 525A, an inhibitor of cy...

journal_title：Carcinogenesis

authors： Wierckx FC,Wedzinga R,Meerman JH,Mulder GJ

更新日期：1990-01-01 00:00:00

abstract：:The apoptotic response to DNA damage appears to be an innate biological mechanism for protection against tumourigenesis. It is possible that agents that protect against colorectal cancer act by enhancing the apoptotic deletion of cells suffering DNA damage, with consequent removal of those with tumourigenic mutations....

journal_title：Carcinogenesis

authors： Hu Y,Martin J,Le Leu R,Young GP

更新日期：2002-07-01 00:00:00

abstract：:The repair kinetics and sensitivity to inhibitors of DNA strand breaks caused by superoxide anion, hydrogen peroxide, benzoyl peroxide and anthralin have been studied and compared with strand breaks caused by well-studied agents such as ionizing radiation and bleomycin. The latter two agents are generally believed to ...

journal_title：Carcinogenesis

authors： Birnboim HC

更新日期：1986-09-01 00:00:00

abstract：:Monoclonal or affinity-purified antibodies specific to Novikoff hepatoma cytokeratin p39 were employed to study the origin and fate of p39-containing cell types during hepatocarcinogenesis induced with N,N-dimethyl-p(m-tolylazo)aniline. Frozen sections were obtained from the livers of animals autopsied temporally duri...

journal_title：Carcinogenesis

authors： Schmidt WN,Page DL,McKusick K,Hnilica LS

更新日期：1985-08-01 00:00:00