Abstract:
:In this study, we set out to determine if the differential sensitivities to CPT between a radioresistant (Sk-Mel-3) and a radiosensitive (HT-144) human melanoma cell line, and also between cultures with a different growth phase in each cell line, were related to endogenous differences in cellular transport of CPT or to DNA topo I catalytic activities and content. Cultures of HT-144 and Sk-Mel-3 cells in both the exponential, or plateau (i.e. confluent), phase of growth were compared. Cellular response to CPT was determined by clonogenic survival assay. Drug accumulation and efflux were determined using [3H]CPT. Topo I catalytic activity was determined from the ability of nuclear extracts prepared from the cells to relax supercoiled DNA plasmid. Nuclear extracts of the cells were also used to determine topo I content by western blotting. The significantly enhanced sensitivity of exponential-phase, relative to plateau-phase, cultures of both cell lines was related to an enhanced accumulation of [3H]CPT in one (i.e. HT-144), but not the other, cell line. Thus the higher sensitivity of exponential-phase cultures of HT-144 relative to those of Sk-Mel-3 can at least be partially accounted for on the basis of a relatively higher accumulation. However, a higher accumulation was not the reason why plateau-phase cultures of HT-144 were relatively more sensitive than those of Sk-Mel-3. Although there were no significant differences (at the p < 0.05 level) between the endogenous catalytic activities of topo I extracted from exponential- and plateau phase-cultures of both these cell lines, there was a trend for HT-144 cells to show higher endogenous topo I catalytic activities compared to Sk-Mel-3 cells. In contrast, topo I content was higher in exponential- relative to plateau phase-cultures of both cell lines, and in HT-144 relative to Sk-Mel-3 when cultures in a similar growth phase were compared. The relative differences in sensitivity to CPT observed in vitro between these two cell lines, and also between exponential- and plateau phase-cultures of each cell line, correlates best with topo I content rather than topo I catalytic activity or [3H]CPT transport.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Ng CE,Cybulski SE,Bussey AM,Aubin RA,Raaphorst GPsubject
Has Abstractpub_date
1998-07-01 00:00:00pages
3119-26issue
4Ceissn
0250-7005issn
1791-7530journal_volume
18pub_type
杂志文章abstract::To evaluate the treatment-related late sequelae including gonadal function and second malignancy 94 patients with stage I and II testicular seminoma treated with postorchiectomy radiation therapy were analyzed retrospectively. The 10-year cause specific, disease free and actuarial survival rates were 100, 98.5 and 96....
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1997-09-01 00:00:00
abstract:BACKGROUND:Most patients with lung cancer experience relapse, although epidermal growth factor receptor (EGFR) of tyrosine kinase inhibitor (TKI) has an astounding effect on tumors with EGFR-activating mutations. It is therefore critical to determine the mechanisms of resistance against agents and the prognostic value ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND/AIM:Pelvic exenteration is a radical procedure for certain advanced or recurrent gynaecological cancers, performed with curative or palliative intent. Its validity has evolved as operative mortality and morbidity have improved. This surgery was evaluated to determine the validity of these claims. PATIENTS A...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13759
更新日期:2019-10-01 00:00:00
abstract:BACKGROUND:Paclitaxel pharmacokinetics were shown to be related to toxicity and survival. PATIENTS AND METHODS:We evaluated the effects of time above paclitaxel concentrations of 0.05 micromol/l (T(>0.05) and systemic exposures (AUC) to total and unbound paclitaxel (tPAC, uPAC) on response in patients with advanced ca...
journal_title:Anticancer research
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2005-11-01 00:00:00
abstract::We have previously shown that oral administration of PSK not only exerts antitumor activity, but also restores immune response in tumor-bearing mice. In order to analyze the immunomodulative effect of PSK, we investigated the effects of oral PSK on the intestinal immune systems in ICR mice bearing sarcoma 180. Oral ad...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1987-05-01 00:00:00
abstract::The technical performance and clinical usefulness of the newly developed Elecsys CA 125 II assay (Boehringer Mannheim) was evaluated in a multicenter study. Imprecision studies were carried out using control sera and human pool sera with CA 125 concentrations from 11 to 1026 U/ml. Within-run CVs between 0.7 to 4.8% (m...
journal_title:Anticancer research
pub_type: 杂志文章,多中心研究
doi:
更新日期:1999-07-01 00:00:00
abstract:UNLABELLED:Concurrent chemoradiotherapy has become a standard therapy for locoregionally advanced inoperable nonsmall cell lung cancer (NSCLC). The purpose of this phase II trial was to evaluate the efficacy and toxicity of concurrent chemoradiotherapy following induction with non-platinum chemotherapy in patients with...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2007-11-01 00:00:00
abstract::It is well known that the activation of innate immune cells, especially antigen-presenting cells such as macrophages and dendritic cells, can ameliorate or exacerbate various diseases, including cancer. Currently, the macrophages and dendritic cells are categorized into several groups by their cell surface and intrace...
journal_title:Anticancer research
pub_type: 杂志文章,评审
doi:
更新日期:2012-06-01 00:00:00
abstract::The experimental techniques, methods of evaluation, and environmental implications of the findings of chemical carcinogenesis studies and related subject areas are herein critically reviewed. It is concluded that firstly, certain presently used procedures provide the best possibilities for the study of the hazardous n...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1985-09-01 00:00:00
abstract:BACKGROUND/AIM:Amentoflavone has been shown to be effective against a variety of cancer cells, but its role in bladder cancer remains unclear. Thus, the aim of this study is to evaluate whether amentoflavone may induce toxicity effect of bladder cancer. MATERIALS AND METHODS:Herein, we evaluated amentoflavone effects ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13512
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVE:This study aimed at assessing the expression and cellular localisation of the androgen receptor (AR) in normal and malignant human endometrial tissues. MATERIALS AND METHODS:Twelve normal endometrial samples and 25 uterine cancers were studied using RT-PCR and immunohistochemistry (IHC). RESULTS:One of the ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2002-03-01 00:00:00
abstract:BACKGROUND:Pharmacologically active components of ginseng, particularly protopanaxadiol (PPD)-type ginsenosides, have potent anticancer effects, although their effects on highly malignant glioblastoma multiforme (GBM) have not been systemically evaluated. Identification of effective anticancer ginsenosides and further ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2016-03-01 00:00:00
abstract::The single and combined antitumor effects of adriamycin and a major histocompatibility complex non-restricted human cytotoxic T cell line (TALL-104) were evaluated in severe combined immunodeficient (SCID) mice engrafted subcutaneously with a biopsy sample from a patient with a highly metastatic gastric carcinoma. Che...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1997-05-01 00:00:00
abstract::Measurement of CA125 is well established in the diagnosis and follow-up of ovarian cancer. CA125 determination is usually performed with the monoclonal antibodies OC125 and M11. For the IMMULITE OM-MA chemoluminsence assay (DPC Biermann, Bad Nauheim, Germany) the monoclonal antibody OV185 is used. We analysed CA125 se...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1999-07-01 00:00:00
abstract:BACKGROUND:A woman, mother of one at the age of 19 years, was diagnosed with mammary adenocarcinoma in the right breast in 1985 at the age of 37 years. The patient underwent surgery (quadrantectomy), lymphadenectomy and radiotherapy. In 1999, an adenocarcinoma was diagnosed in the left breast, followed by adequate rese...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2015-10-01 00:00:00
abstract:BACKGROUND/AIM:In patients with soft tissue sarcoma (STS), distinguishing small metastatic pulmonary nodules from benign ones remains difficult. This study aimed to determine the accuracy of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) in detecting pulmonary metastasis and identi...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12638
更新日期:2018-06-01 00:00:00
abstract::Recent studies have addressed the prevalence and prognostic impact of thrombocytosis in various gynecologic and non-gynecologic malignancies. Thrombocytosis appears to be of prognostic value in certain patients with gynecologic malignancies. In this survey we review the published data and attempt to analyze the progno...
journal_title:Anticancer research
pub_type: 杂志文章,评审
doi:
更新日期:2004-05-01 00:00:00
abstract:BACKGROUND:Matrix metalloproteinase 9 (MMP-9) plays an important role in cancer invasion and metastasis. The relationship between serum MMP-9 levels and clinicopathological factors in gastric cancer patients is not clear. MATERIALS AND METHODS:Preoperative serum was obtained from 170 patients who had undergone gastrec...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2000-03-01 00:00:00
abstract:BACKGROUND/AIM:This cross-sectional study estimated direct cancer-related health care, productivity and informal care costs for a six-month period for different states of breast cancer (BC). PATIENTS AND METHODS:A total of 827 BC patients answered a questionnaire enquiring about informal care, work capacity, and demog...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13119
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND/AIM:Rta, a transactivator of Epstein-Barr virus, is associated with progression of nasopharyngel carcinoma (NPC); however, its mechanism of contribution to the pathogenesis of NPC remains unclear. Interleukin-6 (IL-6), a tumor promoter, is detected in NPC. This in vitro study examined whether and how Rta pro...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.14307
更新日期:2020-06-01 00:00:00
abstract:AIM:Modern radiotherapy (RT) technique and therapy de-escalation have led to encouraging results in lymphoma management. In this study, we aimed to describe the oncological and toxicity outcome in patients with ocular adnexal lymphoma. PATIENTS AND METHODS:A total of 45 patients with 52 orbital lesions who were treate...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.14400
更新日期:2020-07-01 00:00:00
abstract:BACKGROUND:In the present study, we examined the relationships between microsatellite status and Ki-67 labeling index, a proliferative marker, in colorectal cancers in order to clarify the common biological profiles of familial and sporadic cases of MSI (microsatellite inability)-positive tumors. PATIENTS AND METHODS:...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2002-11-01 00:00:00
abstract:OBJECTIVE:The extent of radiogenic damage in salivary gland (SG) tissue depends on the radiation dose (RD), the fractionation (FN) and the localization of SG in the radiation field (RF). While the functional restriction and the radiogenic SG tissue damage are well documented using histomorphological, electron-microscop...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2000-11-01 00:00:00
abstract::Multidrug resistance (mdr) constitutes the major obstacle to successful cancer treatment. The ability of fifteen newly-synthesised N-acylphenothiazine derivatives to inhibit the transport activity of P-glycoprotein was studied by flow cytometry in a resistant mouse lymphoma cell line. A standard functional assay with ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2002-09-01 00:00:00
abstract:BACKGROUND/AIM:It is unknown whether hypoxia regulates aurora kinase A (AURKA), a serine/threonine kinase, in neuroblastoma to stimulate cell growth or migration. We sought to determine whether AURKA mediates hypoxia-induced regulation of neuroblastoma tumorigenicity. MATERIALS AND METHODS:Human neuroblastoma BE(2)-C ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2014-05-01 00:00:00
abstract::Ten patients with neuroblastoma were treated with a standard pulsed administration schedule of cis-platinum and etoposide (VP16-213). Two patients are experiencing good partial responses lasting over 8 months. One other patient had a partial response. Toxicity was mild and limited to high frequency hearing loss, tempo...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1986-11-01 00:00:00
abstract::CPT-11 is a derivative of camptothecin, a topoisomerase-I inhibitor with marked cytotoxic activity. We examined the cytotoxicity of CPT-11 and its metabolite SN-38 for primary gastrointestinal carcinoma and various recurrent carcinomas which were cultured on contact-sensitive plates (CSPs). The response rate of seven ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1994-03-01 00:00:00
abstract::Glioblastoma multiforme (GBM), a grade IV glioma, appears to harbor therapy-resistant cancer stem cells (CSCs) that are the major cause of recurrence. All-trans retinoic acid (ATRA), a derivative of retinoid, is capable of differentiating a variety of stem cells, as well as normal neural progenitor cells, and down-reg...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2010-12-01 00:00:00
abstract::The purpose of this study was to assess the contribution of techentium-99m methoxyisobutylisonitrile (Tc-99m sestamibi) scintimammography in the diagnosis of breast cancer in 32 female patients with indeterminate mammographic probability of malignancy because of mammographically dense breasts. All the breast masses we...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::Chronic treatment with Sasa Health, extract of bamboo grass leaves obtained by alkaline hydrolysis, in drinking water at the concentration of 0.044%-0.088% Fe-Chlorophyllin Na resulted in the significant inhibition of both development and growth of spontaneous mammary tumours in a high mammary tumour strain of SHN vir...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1998-01-01 00:00:00