Abstract:
:Overexpression of the MDR1 product, P-glycoprotein (Pgp), has been shown to be one of the mechanisms underlying the development of multidrug resistance (MDR). Recently, one mutant p53 has been shown to stimulate the MDR1 gene promoter in vitro, whereas wild-type p53 repressed this activity. We measured Pgp and p53 expression by immunoblotting in 34 colorectal tumours, and performed mutation analyses on the p53-positive tumours to confirm the presence of mutant p53 protein. Tumour DNA indices (DIs) were also measured using flow cytometry. Pgp was detected in 44% (15/34) of the tumours and in 100% (13/13) of the normal mucosas (P = 0.0005), with highest levels of expression seen in normal mucosa, suggesting that initial drug resistance in colorectal tumours is not caused by Pgp. Highly DNA aneuploid tumours demonstrated the lowest levels of Pgp expression relative to moderately aneuploid and diploid colorectal tumours. p53 protein was detected in 53% (18/34) of the tumours, and 12 of 14 p53-positive tumours had p53 gene mutations, p53-negative tumours had approximately twice the level of Pgp expression of p53-positive tumours. Pgp expression was not associated with either p53 expression (P = 0.73) or incidence of p53 gene mutation (P = 0.70), suggesting that mutant p53 does not induce Pgp overexpression in colorectal carcinomas.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
De Angelis P,Stokke T,Smedshammer L,Lothe RA,Lehne G,Chen Y,Clausen OPdoi
10.1038/bjc.1995.329subject
Has Abstractpub_date
1995-08-01 00:00:00pages
307-11issue
2eissn
0007-0920issn
1532-1827journal_volume
72pub_type
杂志文章abstract::The risk for sinonasal cancer associated with tobacco use was examined in a case-control study in males diagnosed between 1978 and 1981 in the Netherlands. Of the 116 cases of sinonasal cancer and 259 controls identified, interviews were completed for 92 (79%) of the cases and 195 (75%) of the controls. Ever-users of ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1987.303
更新日期:1987-12-01 00:00:00
abstract::The survival of 64 consecutive patients with disseminated midgut carcinoid tumours was compared in a retrospective study with that of 25 consecutive patients with sporadic malignant endocrine pancreatic tumours treated according to similar surgical principles. The presence of hepatic metastases implied a worse prognos...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6690494
更新日期:1999-06-01 00:00:00
abstract:BACKGROUND:Appreciating variation in the length of pre- or post-presentation diagnostic intervals can help prioritise early diagnosis interventions with either a community or a primary care focus. METHODS:We analysed data from the first English National Audit of Cancer Diagnosis in Primary Care on 10 953 patients with...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2015.40
更新日期:2015-03-31 00:00:00
abstract:BACKGROUND:Hepatocellular carcinoma (HCC) is one of the most common types of malignant tumour and has poor prognosis. Currently, systematic chemotherapy is the only approach to prolong survival. Thus the development of new treatment regimens is urgently needed to improve the therapeutic efficacy. Our study intended to ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2017.55
更新日期:2017-04-11 00:00:00
abstract:BACKGROUND:Emergence of drug-resistant cancer phenotypes is a challenge for anti-cancer therapy. Cancer stem cells are identified as one of the ways by which chemoresistance develops. METHOD:We investigated the anti-inflammatory combinatorial treatment (DA) of doxorubicin and aspirin using a preclinical microfluidic m...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/s41416-018-0301-9
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:Dichloroacetate (DCA), through the inhibition of aerobic glycolysis (the 'Warburg effect') and promotion of pyruvate oxidation, induces growth reduction in many tumours and is now undergoing several clinical trials. If aerobic glycolysis is active in multiple myeloma (MM) cells, it can be potentially targete...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2013.120
更新日期:2013-04-30 00:00:00
abstract::We have previously reported that interleukin 10 (IL-10) signalling stimulated activation of a specific enhancer element, termed HTE-1, to promote tissue inhibitor of matrix metalloproteinase1 (TIMP-1) expression in human bone metastatic PC-3 subclone (PC-3 ML) cells. Recently, we have identified an IL-10 responsive si...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6600855
更新日期:2003-05-19 00:00:00
abstract::This study was planned to evaluate the feasibility of mouth self-examination (MSE). Some 450 college students distributed to 9000 households a brochure describing the risk factors of oral cancer, the appearance of premalignant and malignant lesions of the oral cavity and the methods of MSE with pictures. All subjects ...
journal_title:British journal of cancer
pub_type: 杂志文章,多中心研究
doi:10.1038/bjc.1995.81
更新日期:1995-02-01 00:00:00
abstract::This study was undertaken to determine the prevalence of anti-cardiolipin antibodies (ACLAs) in patients with malignancy and to investigate a possible association of ACLAs with thromboembolic events in such patients. The study included 216 patients with solid and non-solid malignancies and an age-matched control group...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1995.353
更新日期:1995-08-01 00:00:00
abstract::In recent years, large discrepancies were described in the success rate of the tyrosinase reverse transcription polymerase chain reaction (RT-PCR) for detecting melanoma cells in the peripheral blood of melanoma patients. We present a quality control study in which we analysed the reproducibility of detection of tyros...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6690436
更新日期:1999-05-01 00:00:00
abstract:BACKGROUND:There is emerging evidence to suggest that the association between socioeconomic circumstances and colorectal cancer incidence has changed over recent decades. METHODS:We conducted a descriptive population-based study to describe the relationship between socioeconomic circumstances and the incidence of colo...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2011.149
更新日期:2011-05-24 00:00:00
abstract::Estimation of FGF-3 oncogene amplification in DNA samples extracted from paraffin embedded sections of 136 ovarian cancer samples was carried out by a quantitative PCR method. The aim of this study was to elucidate a possible association of FGF-3 copy numbers with established prognostic factors such as age, histology,...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1993.206
更新日期:1993-05-01 00:00:00
abstract:BACKGROUND:Systemic failure remains a challenge in rectal cancer. We investigated the possible systemic anti-tumour immune activity invoked within oxaliplatin-based neoadjuvant therapy. METHODS:In two high-risk patient cohorts, we assessed the circulating levels of the fms-like tyrosine kinase 3 ligand (Flt3L), a fact...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/s41416-018-0085-y
更新日期:2018-05-01 00:00:00
abstract::Monoclonal and polyclonal antibodies against placental alkaline phosphatase (PLAP) were evaluated for tumour immunolocalization of human PLAP-producing Hep 2 tumours in nude mice. The antibodies were labelled with 125I and injected i.p. in mice with developing Hep 2 tumours. The distribution of 125I-anti PLAP in vario...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1984.23
更新日期:1984-02-01 00:00:00
abstract:BACKGROUND:To evaluate the anticancer activity of erlotinib in patients with previously treated, advanced non-small cell lung cancer (NSCLC) whose dose is increased to that associated with a maximal level of tolerable skin toxicity (i.e., target rash (TR)); to characterise the pharmacokinetics (PK) and pharmacodynamics...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2011.332
更新日期:2011-09-27 00:00:00
abstract:BACKGROUND:Elderly cancer patients form a heterogeneous population in which therapeutic decision-making is often difficult. The aim of this randomised phase II trial was to evaluate the feasibility and activity of weekly docetaxel/gemcitabine (DG) followed by erlotinib after progression (arm A) vs erlotinib followed by...
journal_title:British journal of cancer
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1038/bjc.2011.331
更新日期:2011-10-11 00:00:00
abstract::The aim of this study was to determine the dose-limiting toxicity (DLT) and establish the recommended dose for mitomycin C added every 3 weeks to the standard combination dose of capecitabine. Cohorts of at least three patients with pretreated gastrointestinal carcinoma received capecitabine 1000 mg m(-2) orally twice...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1038/sj.bjc.6602025
更新日期:2004-08-31 00:00:00
abstract::The use of more lipophilic derivatives of 5-aminolevulinic acid (ALA) is expected to have better diffusing properties, and after conversion into the parent ALA, to reach a higher protoporphyrin IX (PPIX) formation rate, thus improving the efficacy of topical photodynamic therapy (PDT). Here we have analysed the behavi...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1054/bjoc.2001.1875
更新日期:2001-07-20 00:00:00
abstract:BACKGROUND:We used bleomycin, etoposide, cisplatin (BEP), the most effective regimen in the treatment of germ cell tumours (GCTs) and increased dose-density by using pegfilgrastim to shorten cycle length. Our aim was to assess safety and tolerability. METHODS:Sixteen male patients with intermediate or poor prognosis m...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2011.309
更新日期:2011-09-06 00:00:00
abstract:BACKGROUND:Tumours consist of heterogeneous cancer cells and are likely to contain drug-tolerant cell subpopulations, causing early relapse. However, treatment strategies to eliminate these cells have not been established. METHODS:We established gastric cancer patient-derived cells (PDCs) to examine the contribution o...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/s41416-019-0600-9
更新日期:2019-11-01 00:00:00
abstract::The purpose of the study is to test the hypothesis that expression of cell cycle regulatory proteins p16(INK4a) and pRb is significantly associated with prognosis in ovarian carcinomas. We performed immunohistochemical analysis of p16(INK4a) and pRb expression and correlated with survival in a series of 300 patients w...
journal_title:British journal of cancer
pub_type: 杂志文章,随机对照试验
doi:10.1038/sj.bjc.6603531
更新日期:2007-01-29 00:00:00
abstract::Besides its cardiotoxic effect, doxorubicin also elicits inflammatory effects in vivo. 7-Monohydroxyethylrutoside (monoHER) has recently been used as a protector against doxorubicin-induced cardiotoxicity in vivo. It is not known yet whether monoHER can also protect against doxorubicin-induced inflammatory effects. Th...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6601022
更新日期:2003-07-21 00:00:00
abstract:BACKGROUND:Aetiology of acute myeloid leukaemia (AML) is not well understood, perhaps because of its distinct subtypes. High-dose ionising radiation is a known risk factor, but less is known about risk from low-dose exposure such as from diagnostic radiography. METHODS:Subjects were 412 matched case-control pairs. Ten...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2011.114
更新日期:2011-04-26 00:00:00
abstract::Peripheral blood mononuclear cells (PBMCs) were obtained from patients receiving radioactive murine monoclonal antibody (MAb) therapy for malignant epithelial tumours, as well as normal controls, and were tested for the ability of T cells to proliferate in vitro in the presence of the MAb administered for therapy (HMF...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1991.337
更新日期:1991-09-01 00:00:00
abstract::Connective tissue growth factor (CTGF) is a major chemotactic and mitogenic factor for connective tissue cells. The amino acid sequence shares an overall 28-38% identity to IGFBPs and contains critical conserved sequences in the amino terminus. It has been demonstrated that human CTGF specifically binds IGFs with low ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1054/bjoc.2000.1364
更新日期:2000-09-01 00:00:00
abstract::Despite expressing both Fas and Fas ligand, DU145 and LNCaP prostate cancer cells were resistant to anti-Fas-induced cell death. Resistance to Fas-mediated cytotoxicity could be overcome in DU145, but not in LNCaP, cells by pretreating cells with sublethal doses of cytotoxic drugs, such as camptothecin. Activated casp...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6690365
更新日期:1999-05-01 00:00:00
abstract:BACKGROUND:Inhibitors of the mammalian target of rapamycin (mTOR) might become a novel tool to treat advanced prostate cancer. However, chronic drug exposure may trigger resistance, limiting the utility of mTOR inhibitors. METHODS:Metastatic potential of PC3 prostate cancer cells, susceptible (PC3(par)) or resistant (...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2012.313
更新日期:2012-08-21 00:00:00
abstract::Raltitrexed, a thymidylate synthase inhibitor, was given to 21 patients with advanced small-cell lung cancer, at a dose of 3 mg m(-2) as a 15-min intravenous infusion at 21-day intervals. All of the patients had extensive disease and 17 had received prior therapy. Patients with disease refractory to primary chemothera...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章
doi:10.1038/bjc.1997.373
更新日期:1997-01-01 00:00:00
abstract::Abnormalities of the p53 tumor-suppressor gene are found in a significant proportion of astrocytic brain tumours. We studied tumour specimens from 74 patients evaluated over 20 years at the Massachusetts General Hospital, where clinical outcome could be determined and sufficient pathologic material was available for i...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6602161
更新日期:2004-11-01 00:00:00
abstract::A series of three dose escalating studies were conducted to investigate the ability of the 17alpha-hydroxylase/C(17,20)-lyase inhibitor abiraterone acetate, to cause maximum suppression of testosterone synthesis when delivered to castrate and noncastrate males with prostate cancer. Study A was a single dose study in c...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1038/sj.bjc.6601879
更新日期:2004-06-14 00:00:00