Abstract:
:The effect of reduced glutathione (GSH) and ethanol on aflatoxin B1 (AFB1)-induced DNA single strand breaks was studied in primary cultured hepatocytes. Buthionine sulfoximine (BSO) which decreased intracellular GSH to 13% of those of the control levels increased DNA fragmentation of AFB1-treated hepatocytes by over 17% of those without BSO. Thus, a decrease in hepatocyte GSH levels increased AFB1-induced DNA damage. Although ethanol in itself did not induce DNA damage, a combination of BSO and ethanol increased the percentage by over 23% of that with BSO only. Ethanol did not affect the amount of GSH, total cytochrome P-450 (P450), glutathione S-transferase (GST) and epoxide hydrolase (EHase) in cultured hepatocytes. However, GSH-depleted rat hepatocytes exposed to ethanol significantly increased the level of P450IIIA, which activates AFB1. The enhancing effects of ethanol in the presence of BSO are probably due to the induction of this isozyme in rat hepatocytes. The GSH-depleted hepatocytes are more susceptible to chemical carcinogens in the presence of ethanol.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Tsutsumi N,Miyazaki Kdoi
10.3892/ijo.4.1.123subject
Has Abstractpub_date
1994-01-01 00:00:00pages
123-7issue
1eissn
1019-6439issn
1791-2423journal_volume
4pub_type
杂志文章abstract::The purpose of the study was to determine whether the organ environment can influence the response of colon cancer cells to chemotherapy. The highly metastatic human colon cancer cell line KM12L4, previously selected for production of liver metastases in nude mice, was injected into the cecal wall and into the spleen ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.3.3.413
更新日期:1993-09-01 00:00:00
abstract::Inhibin and activin, members of transforming growth factor beta (TGF beta) superfamily, have been localized immunohistochemically in fetal bovine heart endothelial cells (FBHE), suggesting that these cells produce inhibin/activin proteins. In addition, the mRNAs coding for alpha-, and beta A-subunits of inhibin/activi...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.7.4.759
更新日期:1995-10-01 00:00:00
abstract::Cutaneous melanoma is an aggressive cancer with a poor prognosis for patients with advanced disease. The identification of several key molecular pathways implicated in the pathogenesis of melanoma has led to the development of novel therapies for this devastating disease. In melanoma, both the Ras/Raf/MEK/ERK (MAPK) a...
journal_title:International journal of oncology
pub_type: 杂志文章,评审
doi:10.3892/ijo.2014.2481
更新日期:2014-08-01 00:00:00
abstract::We examined the effects of tranilast on tumor angiogenesis, tumor growth and metastasis in the mouse Lewis lung carcinoma and C57BL mouse system. Tranilast significantly reduced the dense capillary network induced by Lewis lung cancer cells in a mouse dorsal air sac angiogenesis model. Intraperitoneal administration o...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.17.6.1151
更新日期:2000-12-01 00:00:00
abstract::We have previously reported that Insulin-like growth factor (IGF-I) is a cellular growth factor of human transformed T-lymphocytes. To evaluate the role of IGF-I for nontransformed T-cells we investigated synthesis of IGF-I and the influence of an IGF-I antiserum, UBK487, during proliferation process. IGF-I is synthes...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2.6.1003
更新日期:1993-06-01 00:00:00
abstract::The cell cycle was analyzed using double staining with an anti-bromodeoxyuridine (BrdU) monoclonal antibody and propidium iodide (PI). Changes in cell kinetics after irradiation were compared with those seen by the conventional PI-based DNA histogram method. The effect of irradiation on cell kinetics has been studied ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.12.2.345
更新日期:1998-02-01 00:00:00
abstract::Sentinel node (SN) mapping and biopsy is a procedure that accurately stages the regional lymph node (LN) basin. Defined patterns of lymphatic drainage allow intraoperative determination of the first (sentinel) lymph node in the regional basin, and the absence of metastatic disease in the SN accurately reflects the abs...
journal_title:International journal of oncology
pub_type: 杂志文章,评审
doi:10.3892/ijo.15.1.25
更新日期:1999-07-01 00:00:00
abstract::MicroRNAs (miRNAs) are a large family of small, non-coding RNAs that play a pivotal role in tumorigenesis. miR‑34a, which is a member of the miR-34 family, is a downstream target of p53. Increasing evidence shows that miR-34a dysregulation may contribute to tumor development and progression in numerous cancers, includ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2017.4015
更新日期:2017-07-01 00:00:00
abstract::We have analyzed proteins produced in Various human gastric carcinoma cell lines and normal gastric mucosa. The production of HSP90 increased in eight gastric carcinoma cell lines. Gelsolin content was down-regulated in seven gastric carcinoma cell lines. Furthermore, the production of GST-pi increased in a poorly dif...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.5.6.1347
更新日期:1994-12-01 00:00:00
abstract::We investigated the effect of stabilized Fab oligomerization by disuccinimidyl suberate on tumor uptake in a pancreatic carcinoma xenograft model in nude mice. Recombinant mouse/human chimeric Fab of the anti-carcinoembryonic antigen (CEA) monoclonal antibody A10, which was previously shown to react specifically with ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.14.1.139
更新日期:1999-01-01 00:00:00
abstract::Experimental evidence indicates that prostate apoptosis response-4 (Par-4, also known as PAWR) is a key regulator of cancer cell survival and may be a target for cancer-selective targeted therapeutics. Par-4 was first identified in prostate cancer cells undergoing apoptosis. Both intracellular and extracellular Par-4 ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.1983
更新日期:2013-08-01 00:00:00
abstract::Inositol hexaphosphate (IP6), also known as phytic acid, has been shown to exhibit anticancer effects in a number of preclinical tumor models. IP6 decreases proliferation by arresting cells in the G0/G1 phase, inhibits iron-mediated oxidative reactions, enhances differentiation and stimulates apoptosis. The present st...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2018.4488
更新日期:2018-10-01 00:00:00
abstract::The transcription factor twist family bHLH transcription factor 1 (TWIST), which is a member of the basic helix-loop-helix class of proteins, is known to induce epithelial-mesenchymal transition (EMT) and promote cancer metastasis. TWIST has previously been reported to be associated with multidrug resistance (MDR), si...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2018.4495
更新日期:2018-10-01 00:00:00
abstract::In the present study, the cc‑006cpm8 novel colon cell line was established from a sample of right colorectal adenocarcinoma obtained from a woman with liver metastasis. It was possible to culture this cell line for ≥100 passages in vitro with vigorous growth. Morphologically, the cells grew as several layers with tigh...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2019.4806
更新日期:2019-07-01 00:00:00
abstract::Although CD138 expression is a hallmark of plasma cells and myeloma cells, reduced CD138 expression is occasionally found. However, the mechanisms underlying CD138 downregulation in myeloma cells remain unclear. Previous reports suggest that the bone marrow microenvironment may contribute to CD138 downregulation. Amon...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.2134
更新日期:2013-12-01 00:00:00
abstract::Early detection and treatment are critical in the management of renal cell carcinoma (RCC). However, there is no standard serum biomarker to facilitate early diagnosis or prognostic stratification in patients with RCC. Recent reports suggest that circulating microRNAs (miRNAs) have great potential as biomarkers for di...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.2169
更新日期:2014-01-01 00:00:00
abstract::In this communication we show that overexpression of the human TATA-binding protein (TBP) activates a synthetic promoter with p53-binding sites in the presence of wild-type p53. No activation is observed in the absence of wild-type p53 in Saos-2 cells. Perhaps, TBP is limiting in these cells for the p53-mediated activ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
abstract::We have reported that ONO-4007, a novel synthetic lipid A derivative with low toxic activities, produced large amount of tumor necrosis factor (TNF)-alpha selectively in the tumor tissues and brought about complete cures in about 60% of rats bearing TNF-alpha sensitive KDH-8 cells, which also secreted a large amount o...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2003-08-01 00:00:00
abstract::Side population (SP) cells may play a crucial role in tumorigenesis and the recurrence of cancer. Many types of cell lines and tissues have demonstrated the presence of SP cells, including colon cancer cell lines. This study aimed to identify cancer stem cells (CSCs) in the SP of the colon cancer cell line SW480. SP c...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2498
更新日期:2014-09-01 00:00:00
abstract::Alternative polyadenylation and microRNA regulation are both mechanisms of post-transcriptional regulation of gene expression. Alternative polyadenylation often results in mRNA isoforms with the same coding sequence but different lengths of 3' UTRs, while microRNAs regulate gene expression by binding to specific mRNA ...
journal_title:International journal of oncology
pub_type: 杂志文章,评审
doi:10.3892/ijo.2013.2047
更新日期:2013-10-01 00:00:00
abstract::The relation between the consumption of cruciferous vegetables and reduced prostate cancer occurrence has been documented, although the responsible phytochemicals are unknown. The effects of sulforaphane (SFN) which occurs as the precursor glucosinolate in broccoli and other cruciferous vegetables, and its metabolite ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.20.3.631
更新日期:2002-03-01 00:00:00
abstract::CA IX is a tumor-associated transmembrane isoform of the carbonic anhydrase with a high enzyme activity and a functional involvement in the pH regulation and cell adhesion. Expression of CA9 gene in tumor cells is principally regulated by the high cell density and the hypoxia-related VHL-HIF pathway. In renal cell car...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2005-04-01 00:00:00
abstract::Curcumin shows growth-inhibition against tumor cells through multi-target mechanisms. Nevertheless, the poor stability and pharmacokinetics considerably limit its clinical functions. Increased effort has been put into the chemical alteration of curcumin to find potential analogues with improved bioavailability and ant...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3425
更新日期:2016-05-01 00:00:00
abstract::Rearranged during transfection kinase (RET) is a validated molecular target in medullary thyroid cancer (MTC), as activating mutations in RET are often associated with the development of MTC. The present study reports the first preclinical characterization of salinomycin and selected analogs as potent RET transcriptio...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2019.4916
更新日期:2020-01-01 00:00:00
abstract::A major limitation of cancer chemotherapy is development of resistance. In this study, we analyzed KB-3-1 cells and adriamycin-selected multidrug resistant sublines KB-A1 and KB-A10 cells for mechanisms of resistance. KB-A10 cells are 10-fold more resistant than KB-A1 cells but have lower P-glycoprotein. Of the known ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.11.5.1025
更新日期:1997-11-01 00:00:00
abstract::Lymph node metastasis of breast cancer is a clinical marker of poor prognosis. Yet, there exist no therapies targeting mechanisms of intravasation into lymphatics. Herein we report on an effect of the antidyslipidemic drug fenofibrate with vasoprotective activity, which attenuates breast cancer intravasation in vitro,...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2017.3956
更新日期:2017-05-01 00:00:00
abstract::HeLa cell cultures were used as model systems for small interfering RNA (siRNA) induced knockdown of mRNA expression of the human telomerase catalytic subunit, telomerase reverse transcriptase (hTERT). Four 21-bp siRNAs targeting different sites of the hTERT mRNA were designed, and the siRNA molecules produced by a T7...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-07-01 00:00:00
abstract::In a retrospective analysis of 91 consecutive oral carcinomas we reviewed all patient records and weighed clinicopathological parameters against the results of image DNA cytometry and p53 immunhistochemical staining of the initial diagnostic biopsies. Eighty-seven percent of the biopsies were either aneuploid or nondi...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.5.4.915
更新日期:1994-10-01 00:00:00
abstract::Fluoroquinolone antibiotics induce cytotoxicity in various cancer cell lines and may therefore represent a potentially important source of novel anticancer agents. The aim of the present study was to examine the effect of ciprofloxacin on the viability, redox balance, apoptosis, expression of p53, Bax and Bcl-2, cell ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2018.4310
更新日期:2018-05-01 00:00:00
abstract::Overexpression of TMPRSS4, a cell surface-associated transmembrane serine protease, has been reported in pancreatic, colorectal and thyroid cancers, and has been implicated in tumor cell migration and metastasis. Few reports have investigated both TMPRSS4 gene expression levels and ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2012.1513
更新日期:2012-09-01 00:00:00