Abstract：
:Chloroethyl-nitrosourea is a potent chemotherapeutic agent for brain tumors. However, acquired resistance to this drug has become a serious problem for the treatment of patients. Previously, we established an animal model resistant to nitrosourea (Anticancer Res 19: 5313-5318, 1999). In this study, we evaluate the efficacies of antisense sequences and ribozyme transduction by an adenoviral vector utilizing this model. Adenoviral vectors encoding antisense sequences or ribozyme to MGMT mRNA were constructed, then MGMT-expressing glioma cells were infected with these viruses and 1-(4-amino-2-methyl-5-pyrimidinyl) methyl-3-(2-chloroethyl)-3-nitrosourea (ACNU) sensitivities were quantified. The adenoviral transfer of antisense RNA and ribozyme down-regulated the transcription and expression of MGMT in vitro. It also conferred sensitivity to nitrosourea in vitro and in vivo. However, the effect was minimal. These data suggest that incomplete depletion of MGMT is not sufficient to overcome the resistance and that additional optimization will be required for the complete reversion of drug resistance.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Manome Y,Yoshinaga H,Watanabe M,Ohno Tsubject
Has Abstractpub_date
2002-07-01 00:00:00pages
2029-36issue
4eissn
0250-7005issn
1791-7530journal_volume
22pub_type
杂志文章abstract：:A possible influence of tamoxifen (TAM) treatment on the measurable content of some steroid hormone receptors (i.e. ER, PgR, AR) from primary breast cancers has been evaluated. In eleven postmenopausal women, two biopsies were taken from the same tumor, the first biopsy before starting endocrine treatment, and a secon...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1994-05-01 00:00:00
abstract：:P-glycoprotein (P-gp) actively pumps out a number of anticancer drugs, such as epirubicin, from tumor cells. P-gp is also expressed in the small intestine under normal physiological conditions. Inhibition of intestinal P-gp function using MDR reversing agents may enhance the oral bioavailability of some chemotherapeut...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1998-07-01 00:00:00
abstract：BACKGROUND:Live animal studies using an inoculation model of breast cancer indicate that anaesthetic drugs and techniques differentially affect cancer metastasis, inversely related to Natural Killer (NK) cell and T lymphocyte levels. Clinical histological studies demonstrate that the distribution of these immune cells ...
journal_title：Anticancer research
pub_type： 杂志文章,随机对照试验
doi：
更新日期：2015-03-01 00:00:00
abstract：:The metabolic transformations of labeled pyridoxine by hepatoma cells were studied. Buffalo rats were fed ad libitum a commercially prepared pyridoxine sufficient diet for 20 days at which time they were inoculated intramuscularly with hepatoma 7777 cells in both hind leg muscles. After tumor development, 50 microCi [...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1983-01-01 00:00:00
abstract：BACKGROUND:E-selectin expression is very low in normal adult blood vessels, but is significantly elevated in newly formed tumor capillaries. We hypothesized that a viral vector which has transcriptional specificity for the tumor vasculature may be a tool for angiogenesis-targeted gene therapy. We therefore designed an ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1998-05-01 00:00:00
abstract：BACKGROUND:To assess the prophylactic efficacy of postoperative single intravesical instillation with pirarubicin (THP) and mitomycin C (MMC) for low-risk non-muscle-invasive bladder cancer (NMBC). PATIENTS AND METHODS:A total of 103 clinically low-risk NMBC patients were preoperatively randomized into either THP (n=4...
journal_title：Anticancer research
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.21873/anticanres.14535
更新日期：2020-09-01 00:00:00
abstract：:It was the aim of this study to compare drug-resistant sublines of the murine P388 in relation to resistance markers, the resistant phenotype and immunogenicity. Resistance to drugs either belonging to the MDR type (Doxorubicin, Vincristine, Mitoxantrone) or to the non-MDR type (Methotrexate) was generated in vivo in ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1994-09-01 00:00:00
abstract：AIM:Maximal cytoreduction to minimal residual tumor is the most important determinant of prognosis in patients with advanced stage epithelial ovarian cancer (EOC). Preoperative prediction of suboptimal cytoreduction, defined as residual tumor >1 cm, could guide treatment decisions and improve counseling. The objective ...
journal_title：Anticancer research
pub_type： 杂志文章,多中心研究
doi：
更新日期：2011-11-01 00:00:00
abstract：BACKGROUND:DNA repair capacity may be an important factor in determining both individual susceptibility to cancer and the response to cancer therapy. The aim of this work was to compare DNA damage and the repair process in cells originating from healthy donors and cancer patients. MATERIALS AND METHODS:Using the micro...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2002-05-01 00:00:00
abstract：BACKGROUND:The tumors of the gastrointestinal system have been associated with various immune disorders. The goal of this study was to correlate the presence of the anti-dsDNA autoantibodies in the serum of patients with colorectal adenocarcinoma suffering from the prognosis of their disease. PATIENTS AND METHODS:We i...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：BACKGROUND/AIM:Gefitinib and erlotinib were shown to be particularly effective in a clinically selected subpopulation of non-small cell lung cancer patients (NSCLC): adenocarcinoma histology, non-smoking status, Asian origin and female gender have been associated with improved clinical benefit compared to the unselecte...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2010-12-01 00:00:00
abstract：:Amifostine (Ethyol, WR-2721) has been clinically used in combination with high dose therapy of neuroblastoma stage 4 with melphalan, carboplatin and VP-16 in 14 patients. The amifostine group was compared to a historical control group of 24 comparably-treated patients. There were no significant differences regarding t...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：:The overexpression of p53, c-erbB-2 and p21ras gene products was evaluated immunohistochemically in ovarian carcinomas, borderline, and benign neoplasms. All studies were performed on cytospin preparations of cyst and/or ascitic fluid cells and mutual relations between oncoproteins were analysed. p53 and c-erbB-2 immu...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1997-09-01 00:00:00
abstract：AIM:The current study reports the type of salvage chemotherapy following osimertinib and its treatment efficacy in patients with non-small-cell lung carcinoma (NSCLC) who acquire resistance to osimertinib. PATIENTS AND METHODS:In this retrospective cohort study, data from the medical charts of 40 patients with NSCLC t...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.14186
更新日期：2020-04-01 00:00:00
abstract：:We have investigated the combined effects of 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] and its fluoroanalog 26,26,26,27,27,27-hexafluoro-1,25-(OH)2D3 [F6-1,25-(OH)2D3] with sodium butyrate (NaB) on growth and differentiation of HL-60 human promyelocytic leukemia cells. F6-1,25-(OH)2D3 was 10-fold more active than 1,25-(...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1992-11-01 00:00:00
abstract：BACKGROUND:A number of association studies have focused on the effect of polymorphisms related to DNA repair or the xenobiotic pathway, on the susceptibility to gastric cancer (GC). Here, the possible association between common polymorphisms in the X-ray repair cross-complementing groups (XRCC) 1, and glutathione-S-tra...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2011-02-01 00:00:00
abstract：:Ten patients with advanced renal cell carcinoma were given combined chemoendocrine treatment with tegafur and tamoxifen. Patients were orally administered 800 mg/body tegafur and 20 mg/body tamoxifen daily. One patient was assessed as CR, three as PR, two as NC and four as PD. One out of two patients with estrogen rec...
journal_title：Anticancer research
pub_type： 临床试验,杂志文章
doi：
更新日期：1995-07-01 00:00:00
abstract：:We retrospectively analysed data from 1751 patients with non-metastatic and non-inflammatory breast cancer treated in our institution between 1977 and 1989, in order to evaluate the link between age and prognosis in breast cancer. We chose three age groups (1): < or = 33 (n = 67), 34-40 ( n = 155), > 40 years (n = 152...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1998-05-01 00:00:00
abstract：AIM:Carbonic anhydrase 9 (CA9) has been found to be one of most powerful biomarkers for clear-cell renal cell carcinoma (RCC). The serum CA9 is detectable. The aim of this study was to evaluate the potential prognostic role of serum CA9 in patients with metastatic clear-cell RCC patients under targeted therapy. PATIEN...
journal_title：Anticancer research
pub_type： 杂志文章,随机对照试验
doi：
更新日期：2012-12-01 00:00:00
abstract：:The p53 tumor suppressor protein is a pivotal molecule in the protection against carcinogenesis and is inactivated in a plethora of human neoplasms, p53 prevents the accumulation of genomic alterations by inducing cell-cycle arrest or programmed cell death in response to genotoxic signals such as DNA damage and stress...
journal_title：Anticancer research
pub_type： 杂志文章,评审
doi：
更新日期：1999-09-01 00:00:00
abstract：BACKGROUND:C-reactive protein (CRP) is the prototypical biomarker of inflammation. Genetic variations within the CRP gene have been shown to be associated with alterations of CRP expression and prognosis in cancer patients. The purpose of this study was to evaluate the association between four polymorphisms of the CRP ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2011-06-01 00:00:00
abstract：BACKGROUND/AIM:This study aimed to assess whether low-molecular-weight heparin (LMWH) is effective and safe in preventing postoperative venous thromboembolism (VTE) in patients undergoing esophageal cancer surgery. PATIENTS AND METHODS:In this single-institution, prospective, randomized trial, 73 patients with esophag...
journal_title：Anticancer research
pub_type： 杂志文章,随机对照试验
doi：10.21873/anticanres.13385
更新日期：2019-05-01 00:00:00
abstract：AIM:To assess the ability of ultrasound (US)-guided vacuum-assisted breast excision (VAE) to remove Breast Imaging Reporting and Data System (BI-RADS) ≥3 breast lesions in order to analyze US features most frequently associated with complete excision. MATERIALS AND METHODS:A total of 266 BI-RADS ≥3 lesions without mic...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.14125
更新日期：2020-03-01 00:00:00
abstract：BACKGROUND:We have previously shown, using the chicken embryo chorioallantoic membrane (CAM) model of in vivo angiogenesis, that X-rays act on the extracellular matrix and enhance normal and tumor-induced angiogenesis. In the present work, we studied the effect of X-rays on the gene expression of three proteins that ar...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2004-09-01 00:00:00
abstract：:Malignant human urothelial cell lines propagated in vitro have previously been demonstrated to express low amounts of monomorphic HLA-A,B,C as compared to premalignant urothelial cells. In this study the expression of polymorphic HLA-A,B epitopes in human urothelial cell lines have been investigated in greater detail....
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
abstract：:In pancreatic neoplasias mutations in the first exon (codon 12) of K-ras gene occur at high frequency and seem to have a diagnostic significance. We set up the DGGE conditions to search for these mutations in pancreatic tumor sample DNAs. All samples were directly classified by simply comparing their DGGE patterns wit...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1992-09-01 00:00:00
abstract：:Normal resident peritoneal macrophages from BALB/c mice were continuously grown and expanded in vitro as non tumorigenic cells on a confluent layer of mesothelial cells. These peritoneal macrophages expanded in vitro (EPM) were very cytotoxic against EMT6 sarcoma, Abelson myeloma, EL4, and L929S cells in culture. This...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：:Hyperthermia is effective for the treatment of cancer when applied concomitantly with chemotherapy and irradiation. However, it is difficult to heat deep portions of the body including the esophagus. Cancer of the esophagus still poses considerable treatment problems, with a poor 5-year survival rate after surgery, an...
journal_title：Anticancer research
pub_type： 临床试验,杂志文章,评审
doi：
更新日期：1992-05-01 00:00:00
abstract：BACKGROUND:Pemetrexed and erlotinib represent different agents commonly used for the second-line treatment of patients with advanced-stage non-small cell lung cancer (NSCLC). PATIENTS AND METHODS:We analyzed data of 137 patients with advanced-stage non-squamous NSCLC treated with pemetrexed or erlotinib in the second ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2016-01-01 00:00:00
abstract：BACKGROUND:Anti-epidermal growth factor receptor (EGFR) monoclonal antibodies benefit patients with wild-type KRAS exon 2 metastatic colorectal cancer (mCRC). However, their effect in KRAS-mutant mCRC remains unclear. PATIENTS AND METHODS:This was a retrospective study enrolling 163 patients with unresectable KRAS-mut...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2015-07-01 00:00:00
