The role of aberrant crypt foci induced by the two heterocyclic amines 2-amino-3-methyl-imidazo[4,5-f]quinoline (IQ) and 2-amino-1-methyl-6-phenyl-imidazo[4,5-b]pyridine (PhIP) in the development of colon cancer in mice.

abstract：:We repeated and extended a 1973 study by Sander and Schweinsberg on forestomach tumorigenesis in mice by methylbenzylnitrosamine (MBZN). Groups of 80 adult CD-1 mice of both sexes received 96 mg/kg of MBZN subdivided into 24 doses of 4 mg/kg, 12 doses of 8 mg/kg or 6 doses of 16 mg/kg (groups 1-3, respectively). The m...

journal_title：Cancer letters

authors： Schneider P,Hinrichs S,Zulim R,Towery R,Morris C,Mirvish SS

更新日期：1996-04-19 00:00:00

abstract：:Despite its documented role in cell cycle regulation, over-expression of the cyclin-dependent kinase activator CDC25A does not consistently correlate with worse cancer patient outcomes or predict successful clinical response to CDC25A inhibition. The current study was undertaken to investigate CDC25A in skin cancer an...

journal_title：Cancer letters

authors： Al-Matouq J,Holmes T,Hammiller B,Tran N,Holmes M,Freeman SC,Hansen LA

更新日期：2017-12-01 00:00:00

abstract：:The monoclonal antibody against the AC133 epitope of CD133 has been widely used as a cell surface marker of cancer stem cells in several different cancer types. Here, we describe the isolation and characterisation of two RNA aptamers, including the smallest described 15 nucleotide RNA aptamer, which specifically recog...

journal_title：Cancer letters

authors： Shigdar S,Qiao L,Zhou SF,Xiang D,Wang T,Li Y,Lim LY,Kong L,Li L,Duan W

更新日期：2013-03-01 00:00:00

abstract：:Gastric juice ascorbic acid concentrations were examined in black and white patients. Significantly lower concentrations were found in blacks, in the absence of a significant difference in the plasma concentration of vitamin C between races. Blacks had higher prevalence of Helicobacter pylori infection, higher gastric...

journal_title：Cancer letters

authors： Ruiz B,Correa P,Fontham ET,Rood JC,Malcom GT,Torrado J,Perez A,Ramakrishnan T,Hunter FM

更新日期：1994-08-15 00:00:00

abstract：:Brain metastasis is an important cause of morbidity and mortality in cancer-patients. Breast tumor cells frequently metastasize to brain and initiate severe therapeutic complications. In the present study, we evaluated the anti-metastatic effects of 2'-hydroxyflavanone (2HF) alone and in combination with RLIP targeted...

journal_title：Cancer letters

authors： Singhal J,Singhal P,Horne D,Salgia R,Awasthi S,Singhal SS

更新日期：2018-12-01 00:00:00

abstract：:Although it is well known that ovarian endometriosis occasionally gives rise to ovarian cancers with specific histology such as endometrioid and clear cell carcinomas, its etiology is not fully understood. We have shown that a stressful microenvironment within the endometriotic cyst may lead to cancer development by i...

journal_title：Cancer letters

authors： Mandai M,Matsumura N,Baba T,Yamaguchi K,Hamanishi J,Konishi I

更新日期：2011-11-28 00:00:00

abstract：:Despite the significance of tumor angiogenesis and the extensive knowledge on the molecular basis of blood vessel formation in carcinoma of colorectum, no data exist in hyperplastic polyp. This prompted us to examine angiogenesis in hyperplastic polyp. Eleven small hyperplastic polyps, 13 large hyperplastic polyps and...

journal_title：Cancer letters

authors： Sano Y,Maeda N,Kanzaki A,Fujii T,Ochiai A,Takenoshita S,Takebayashi Y

更新日期：2005-02-10 00:00:00

abstract：:Several clinical protocols are attempting to utilize the combined anti-proliferative signal of interferon-alpha (INF-alpha) and tamoxifen on cancer cells. We demonstrated here that the effect of these two agents on the growth of the premacrophage U937 cells is antagonistic. This antagonistic effect is paralleled by th...

journal_title：Cancer letters

authors： Balint E,Grimley PM,Michalic R,Aszalos A

更新日期：1992-10-30 00:00:00

abstract：:Chronic exposure to cadmium is known to be a risk factor for human prostate cancer. Despite over-whelming evidence of cadmium causing carcinogenicity in humans, the specific underlying molecular mechanisms that govern metal-induced cellular transformation remain unclear. Acute exposure (up to 72 h) to cadmium induces ...

journal_title：Cancer letters

authors： Kolluru V,Pal D,Papu John AMS,Ankem MK,Freedman JH,Damodaran C

更新日期：2017-11-01 00:00:00

abstract：:A tissue field of somatic genetic alterations precedes the histopathological phenotypic changes of carcinoma. Genomic changes could be of potential use in the diagnosis and prognosis of pre-invasive squamous head and neck carcinoma (HNSCC) lesions and as markers for cancer risk assessment. Studies of sequential molecu...

journal_title：Cancer letters

authors： Worsham MJ,Stephen JK,Chen KM,Havard S,Shah V,Gardner G,Schweitzer VG

更新日期：2014-01-28 00:00:00

abstract：:5-fluorouracil (5-FU) is widely used in chemotherapy for colorectal cancer (CRC), but a high rate of chemoresistance reduces its effectiveness in clinical treatment. We found remarkably decreased expression of forkhead box 3 (FoxO3) protein, a tumor inhibitor, in 5-FU-resistant SW620 and HCT-8 (SW620/5-FU and HCT-8/5-...

journal_title：Cancer letters

authors： Liu C,Zhao Y,Wang J,Yang Y,Zhang Y,Qu X,Peng S,Yao Z,Zhao S,He B,Mi Q,Zhu Y,Liu X,Zou J,Zhang X,Du Q

更新日期：2020-02-01 00:00:00

abstract：:In order to understand the differences and similarities between tumorigenic and non-tumorigenic HeLaxhuman fibroblast hybrids, gene expression profiles were examined with synthetic oligonucleotide arrays containing nearly 7000 gene probe sets. We used two pairs of genetically related hybrids, each pair representing in...

journal_title：Cancer letters

authors： Nishizuka S,Winokur ST,Simon M,Martin J,Tsujimoto H,Stanbridge EJ

更新日期：2001-04-26 00:00:00

abstract：:Soil samples were collected from the ground under the plants of Euphorbiaceae and Thymelaeaceae known to possess Epstein-Barr virus-activating diterpene esters. In a test system, the ether extracts of such soil samples at a concentration of 20 micrograms/ml induced Epstein-Barr virus early antigen in approximately 5-2...

journal_title：Cancer letters

authors： Ito Y,Ohigashi H,Koshimizu K,Yi Z

更新日期：1983-06-01 00:00:00

abstract：:Endometrial cancer is one of the most common gynecologic malignancies and many factors influence in its growth and development. As in many other types of cancer, prostaglandin E(2) (PGE(2)) is thought to be an accelerator of cell proliferation and endometrial cancer progression. In this study, we examined the effect o...

journal_title：Cancer letters

authors： Takahashi T,Ogawa H,Izumi K,Uehara H

更新日期：2011-07-01 00:00:00

abstract：:Cancer cachexia patients experience significant muscle wasting, which impairs the quality of life and treatment efficacy for patients. Skeletal muscle protein turnover is imparted by increased expression of ubiquitin-proteasome pathway components. Mitogen-activated protein kinases p38 and ERK have been shown to augmen...

journal_title：Cancer letters

authors： Mulder SE,Dasgupta A,King RJ,Abrego J,Attri KS,Murthy D,Shukla SK,Singh PK

更新日期：2020-10-28 00:00:00

abstract：:Flue gas condensate from briquet-fired residential furnaces was separated into a polycyclic aromatic compound (PAC)-free and a PAC-containing part, followed by a subfractionation of the PAC-containing fraction into 3 parts: PAC consisting predominantly of (a) 2 and 3 rings, (b) 4 and 5 rings and (c) 6 and more rings. ...

journal_title：Cancer letters

authors： Grimmer G,Brune H,Deutsch-Wenzel R,Dettbarn G,Misfeld J,Abel U,Timm J

更新日期：1985-09-15 00:00:00

abstract：:The GH/IGF1 response of somatotropinomas to somatostatin analogues (SSA) is associated with their pattern of somatostatin receptor (sst1-sst5) expression. Recently, we demonstrated that expression of a truncated sst5-variant (sst5TMD4) can influence the secretory response of somatotropinomas to SSA-therapy; however, i...

journal_title：Cancer letters

authors： Luque RM,Ibáñez-Costa A,Neto LV,Taboada GF,Hormaechea-Agulla D,Kasuki L,Venegas-Moreno E,Moreno-Carazo A,Gálvez MÁ,Soto-Moreno A,Kineman RD,Culler MD,Gahete MD,Gadelha MR,Castaño JP

更新日期：2015-04-10 00:00:00

abstract：:Cancer results from genetic alterations in intracellular signaling pathways, which normally orchestrate the execution of developmental programs and the organismic response to extrinsic factors. Mutations in upstream activators and components of the cytoplasmic (Ras-Raf MEK-ERK) cascade frequently occur in tumors. In v...

journal_title：Cancer letters

authors： Rennefahrt U,Janakiraman M,Ollinger R,Troppmair J

更新日期：2005-01-10 00:00:00

abstract：:Head and neck squamous cell carcinoma (HNSCC) is one of the most lethal cancers mainly due to the high rate of metastasis. Here, we find that the expression level of CD100 in HNSCC is positively correlated with the T category, pathological grade and lymph node metastasis of the tumor. The level of soluble CD100 (sCD10...

journal_title：Cancer letters

authors： Zhang C,Qiao H,Guo W,Liu Y,Yang L,Liu Y,Jin B,Fu M,Wang G,Li W

更新日期：2019-07-28 00:00:00

abstract：:To clarify the suitability of a newborn-mouse carcinogenesis assay to detect tumor-promoting activities of carcinogens, the non-genotoxic hydroquinone (HQ) and genotoxic 1,1-dimethylhydrazine (UDMH) were administered to mice during the promotion stage after treatment with 1-methyl-1-nitrosourea (MNU) (20 mg/kg body wt...

journal_title：Cancer letters

authors： Tamura T,Shibutani M,Toyoda K,Shoda T,Takada K,Uneyama C,Takahashi M,Hirose M

更新日期：1999-08-23 00:00:00

abstract：:The tumor promoter, phorbol-12-myristate-13-acetate (PMA), elicited a significant increase in lysosomal membrane permeability, as measured by release of free beta-glucurnidase, in guinea pig and hamster isolated hepatic lysosomes in vitro. This response was antagonized by zinc sulfate; zinc compounds having previously...

journal_title：Cancer letters

authors： Pfeiffer CJ,Cho CH

更新日期：1980-07-01 00:00:00

abstract：:Breast carcinomas are frequently characterized by hyperactivated c-erbB receptor tyrosine kinase signaling. Combination of anti-proliferative retinoids with growth-inhibitory c-erbB-specific agents might induce therapeutic benefit. We demonstrate close interactions between the c-erbB and the retinoic acid receptor sys...

journal_title：Cancer letters

authors： Flicker SH,Schneider SM,Offterdinger M,Dittrich E,Fazeny B,Valenta R,Huber H,Dittrich C,Grunt TW

更新日期：1997-05-01 00:00:00

abstract：:In the course of our continuing search for novel cancer chemopreventive agents from natural sources, several kinds of Eucalyptus plants were screened. Consequently, the phlorogrucinol-monoterpene derivative, euglobal-G1 (EG-1), was obtained from the leaves of Eucalyptus grandis as an active constituent. EG-1 exhibited...

journal_title：Cancer letters

authors： Takasaki M,Konoshima T,Etoh H,Pal Singh I,Tokuda H,Nishino H

更新日期：2000-07-03 00:00:00

abstract：:RXRalpha is an obligatory heterodimerization partner in many signal transducing pathways. To evaluate RXRalpha expression during laryngeal carcinogenesis, immunohistochemistry was performed on laryngeal epithelial specimens of 154 patients with normal-appearing, hyperplastic, dysplastic laryngeal epithelium and squamo...

journal_title：Cancer letters

authors： Karamouzis MV,Sotiropoulou-Bonikou G,Vandoros G,Varakis I,Papavassiliou AG

更新日期：2003-09-25 00:00:00

abstract：:HER-2 is overexpressed in 20-25% of invasive breast cancers and is associated with an aggressive tumor phenotype and reduced survival rate. The HER-2 status of a tumor is the critical determinant of response to the HER-2-targeted antibody Herceptin. Thus, accurate assessment of HER-2 expression levels is essential for...

journal_title：Cancer letters

authors： Nahta R,Esteva FJ

更新日期：2006-02-08 00:00:00

abstract：:Administration of mannoheptulose partially protected mice infected with Listeria monocytogenes against the lethal effect of a subsequent endotoxin challenge. The ability of these animals to produce tumour necrosis factor was however unaffected. Mannoheptulose was observed to reverse the hypoglycaemic effect of endotox...

journal_title：Cancer letters

authors： Choy YM,Cheng CP,Luey LU,Loh SC,Fung KP,Lee CY

更新日期：1987-10-01 00:00:00

abstract：:Several enzymes metabolize the toxic aldehydes produced during lipid peroxidation, such as 4-hydroxynonenal. During carcinogenesis induced by diethylnitrosamine in rat liver, an increase in aldehyde dehydrogenase, in comparison with normal liver, has already been shown. This paper demonstrates that, although to a less...

journal_title：Cancer letters

authors： Canuto RA,Muzio G,Maggiora M,Biocca ME,Dianzani MU

更新日期：1993-02-01 00:00:00

abstract：:Hypusine formation on the eukaryotic initiation factor 5A (eIF-5A) precursor is ubiquitously present in eukaryotic cells and archebacteria. In this reaction, deoxyhypusine synthase catalyzes the conversion of one unique lysine residue on eIF-5A to deoxyhypusine using spermidine as the substrate. Hydroxylation of the d...

journal_title：Cancer letters

authors： Chen ZP,Chen KY

更新日期：1997-05-19 00:00:00

abstract：:We examined the responsiveness of normal and neoplastic lung cells to agents which stimulate cAMP production. While their basal cAMP levels were similar, spontaneous in vitro transformant E9 cells and tumor-derived PCC4 cells produced much less cAMP in response to 1 microM isoproterenol compared to non-tumorigenic C10...

journal_title：Cancer letters

authors： Lange-Carter CA,Droms KA,Vuillequez JJ,Malkinson AM

更新日期：1992-12-24 00:00:00

abstract：:Transfection of the estrogen-dependent and poorly invasive MCF-7 human breast cancer cell line so that it stably overexpressed 12-lipoxygenase and secreted high levels of 12-hydroxyeicosatetraenoic acid when cultured with arachidonate resulted in rapid growth in athymic nude mice when compared with the parental line. ...

journal_title：Cancer letters

authors： Connolly JM,Rose DP

更新日期：1998-10-23 00:00:00