Abstract:
:Experiments were conducted to determine whether bladder cancer would develop in primates (Papio sp.) infected with S. haematobium and concurrently exposed to low initiating doses of the bladder carcinogen N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN). To control for the systemic effects of schistosomiasis, 5 baboons were infected with S. mansoni, which does not lay its eggs in the bladder wall; to control for the effect of the carcinogen alone, 5 others were treated with BBN alone at the rate of 5 or 50 mg/kg per week for the duration of the experiment. Five animals were infected with S. haematobium and had no further treatment, and the main experimental group of 10 baboons was infected with S. haematobium and also treated weekly with 5 mg/kg BBN for up to 2½ years. Four of the 10 animals in the last group, but none in the three control groups developed neoplastic disease of the urothelium. Four animals with S. haematobium plus BBN treatment developed in situ carcinoma in the bladder (3 latent adenomatous lesions and 1 more advanced papillary tumour) and 2 of these animals plus 1 other had slightly dysplastic urothelial endophytic papillary growths of the ureter which penetrated the muscle layer. By contrast, none of the control animals developed urothelial carcinomas, though 4/5 of those with S. haematobium infection alone had inflamed bladders with polypoid lesions, and one individual had endophytic papillary hyperplasia of the ureter. The animals were killed after 2½ years while still relatively immature or adolescent, and it is possible that had they been allowed to survive longer some of the BBN-only group would have developed bladder cancer, and more of the latent lesions seen in the BBN + schistosomiasis group would have progressed to invasive carcinoma. It is postulated that, in this model for human bilharzial bladder cancer, schistosomiasis supplies the proliferative stimulus necessary to accelerate cancer growth from latent tumour foci produced by exposure to low doses of the bladder carcinogen. In areas of endemic schistosomiasis, carcinogenesis might be initiated, for example, by low doses of nitrosamines produced in the urinary tract during bouts of bacteriuria.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Hicks RM,James C,Webbe Gdoi
10.1038/bjc.1980.308subject
Has Abstractpub_date
1980-11-01 00:00:00pages
730-55issue
5eissn
0007-0920issn
1532-1827journal_volume
42pub_type
杂志文章abstract::The aim of this study was to assess the relationship between haemoglobin level and quality-of-life in anaemic cancer patients. Patients, diagnosed with one of four cancers, were recruited if their haemoglobin level was <12 g dl(-1) (female) or <13 g dl(-1) (male). The condition-specific Functional Assessment of Cancer...
journal_title:British journal of cancer
pub_type: 杂志文章,多中心研究
doi:10.1038/sj.bjc.6600247
更新日期:2002-04-22 00:00:00
abstract::Cardiotoxicity is the main dose-limiting side effect of doxorubicin in the clinic. Being a free radical producer, doxorubicin affects the heart specifically because of its low antioxidant capacity. Among those antioxidants, catalase is present in very low levels in the heart compared to other organs. Since catalase is...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6601430
更新日期:2003-12-01 00:00:00
abstract::HMGI and HMGY are splicing variants of the HMGI(Y) gene and together with HMGI-C, belong to a family of DNA binding proteins involved in maintaining active chromatin conformation and in the regulation of gene transcription. The expression of the HMGI(Y) gene is maximal during embryonic development, declines in adult d...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1054/bjoc.2000.1494
更新日期:2000-12-01 00:00:00
abstract:BACKGROUND:The accuracy of prostate-specific antigen (PSA) testing in prostate cancer detection is constrained by low sensitivity and specificity. Dysregulated expression of minichromosome maintenance (Mcm) 2-7 proteins is an early event in epithelial multistep carcinogenesis and thus MCM proteins represent powerful ca...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6605785
更新日期:2010-08-24 00:00:00
abstract::Until recently, endocrine therapy for breast cancer was relatively simple. If the tumour expressed hormone receptors, regardless of stage and age, tamoxifen was indicated. While this largely remains the case for premenopausal women, clinical trials in postmenopausal women have broadened our choice to include one of th...
journal_title:British journal of cancer
pub_type: 杂志文章,评审
doi:10.1038/sj.bjc.6601508
更新日期:2004-01-12 00:00:00
abstract::Although epithelial cell adhesion/activating molecule (EpCAM/CD326) is one of the first tumour-associated antigens identified, it has never received the same level of attention as other target proteins for therapy of cancer. It is also striking that ever since its discovery in the late 1970s the actual contribution of...
journal_title:British journal of cancer
pub_type: 杂志文章,评审
doi:10.1038/sj.bjc.6603494
更新日期:2007-02-12 00:00:00
abstract::Our recent genome-wide allelotyping analysis of gallbladder carcinoma identified 3p, 8p, 9q and 22q as chromosomal regions with frequent loss of heterozygosity. The present study was undertaken to more precisely identify the presence and location of regions of frequent allele loss involving those chromosomes in gallbl...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6600490
更新日期:2002-08-12 00:00:00
abstract::Three hundred and ninety women participated in the quality of life (QL) study of ACCOG1, a high-dose vs conventional adjuvant chemotherapy breast cancer trial, for patients with a high risk of relapse. Patients completed the European Organisation for Research and Treatment of Cancer QLQ-C30, questions on menopausal sy...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6603454
更新日期:2006-12-18 00:00:00
abstract::Between 1971 and 1988, 20 patients with previously undiagnosed non-Hodgkin's lymphoma (NHL), of intermediate or high grade histology presented with extradural spinal cord compression. All had decompressive surgery. The first treatment after surgery was chemotherapy in nine and radiotherapy in 11 patients. At presentat...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1991.25
更新日期:1991-01-01 00:00:00
abstract::Discrete masses are commonly detected during mammographic screening and most such lesions are benign. For lesions without pathognomonically benign imaging features that are still regarded likely to be non-malignant (Tabar grade 3) reliable biopsy results would be a clinically useful alternative to mammographic surveil...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6604296
更新日期:2008-04-08 00:00:00
abstract::Preclinical studies have demonstrated the synergistic anti-tumour activity of combination therapy with the oral cytostatics, 5'-deoxy-5-fluorouridine (5'-DFUR) and cyclophosphamide (CPA), in human breast cancer xenograft models. This study was performed to evaluate the efficacy and safety of this oral combination chem...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章
doi:10.1038/sj.bjc.6601350
更新日期:2003-11-03 00:00:00
abstract::The structural characteristics of mesoionic compounds, which contain distinct regions of positive and negative charges associated with a poly-heteroatomic system, enable them to cross cellular membranes and interact strongly with biomolecules. Potential biological applications have been described for mesoionic compoun...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6601946
更新日期:2004-07-19 00:00:00
abstract::Thyroid carcinomas of an additional series of 34 children exposed to radioactive fall-out after the Chernobyl reactor accident were analysed for mutations in the H-, K- and N-RAS and the p53 gene. Allele-specific oligonucleotide hybridization, single-strand conformation polymorphism (SSCP) and direct sequencing did no...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1998.157
更新日期:1998-03-01 00:00:00
abstract::The mechanism of down-regulation of c-myc RNA associated with androgen-induced suppression of the transformed phenotype in the human prostate carcinoma cell line LNCaP was investigated. The synthetic androgen mibolerone (7 alpha-17 alpha-Dimethyl-19-nortestosterone) reversibly inhibits the proliferation of LNCaP cells...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1992.76
更新日期:1992-03-01 00:00:00
abstract::Cytogenetic investigation was performed on direct preparations of 15 endometrial cancers showing different histotypes. Clonal abnormalities were found in 11 out of 13 analysable cases. The modal chromosome number was near diploid in all cases. The abnormal karyotypes contained relatively simple numerical or structural...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1997.312
更新日期:1997-01-01 00:00:00
abstract::Chemical structures of the sugar chains of various human alpha-fetoprotein (AFP) species with different affinity for Concanavalin A (Con A) and Lens culinaris agglutinin (LCA) were examined by pyridylamination of their oligosaccharides and stepwise exoglycosidase digestion. Using reversed-phase and size-fractionation ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1993.91
更新日期:1993-03-01 00:00:00
abstract::Hypoxia is a key factor contributing to the progression of human neoplasias and to the development of resistance to chemotherapy. BNIP3 is a proapoptotic member of the Bcl-2 protein family involved in hypoxia-induced cell death. We evaluated the expression and methylation status of BNIP3 gene to better understand the ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6602422
更新日期:2005-03-28 00:00:00
abstract:BACKGROUND:The recognition that cancer is not a single entity, rather that different cancers have different causes and trajectories, has been a key development in the scientific understanding of cancer. However, little is known about the British public's awareness of differences between cancers. This study examined dif...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2012.185
更新日期:2012-06-05 00:00:00
abstract::RNA tumour virus genes are contained in the chromosomal DNA of most vertebrates, and may be transmitted vertically from parent to progeny along with other cellular genes, as well as horizontally as infectious particles. Activation of these viral genes may be part of the means by which RNA tumour viruses produce cancer...
journal_title:British journal of cancer
pub_type: 杂志文章,评审
doi:10.1038/bjc.1978.23
更新日期:1978-02-01 00:00:00
abstract::The effects of steroid hormones are pleiotropic. Similarly, non-steroidal oestrogen receptor antagonists such as tamoxifen exert partial agonistic effects with a species- and tissue-specific pattern. Conversely, little is known of the biological effects of non-steroidal anti-androgens, whose role has been investigated...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1038/bjc.1994.115
更新日期:1994-03-01 00:00:00
abstract::To evaluate the efficacy and safety of capecitabine and cisplatin in patients with recurrent gastric cancer after fluoropyrimidine-based adjuvant therapy. Patients with histologically confirmed and measurable advanced gastric cancer that had relapsed after fluoropyrimidine-based adjuvant chemotherapy received oral cap...
journal_title:British journal of cancer
pub_type: 临床试验,杂志文章
doi:10.1038/sj.bjc.6602336
更新日期:2005-01-31 00:00:00
abstract::DT-diaphorase (DTD) is an important enzyme for the bioreductive activation of the new alkylating indoloquinone EO9. In preclinical studies, EO9 has shown selective anti-tumour activity against solid tumours and under hypoxic conditions. The levels of three reductive enzymes have been determined in three types of human...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1995.433
更新日期:1995-10-01 00:00:00
abstract:BACKGROUND:Circulating total cytokeratin 18 (tCK18) and/or caspase cleaved cytokeratin 18 (cCK18) (measured by M65 and M30 enzyme-linked immunosorbent assays (ELISAs), respectively) are used as pharmacodynamic (PD) biomarkers of epithelial cell death in clinical trials. Having validated these ELISAs, we assessed their ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2012.416
更新日期:2012-10-23 00:00:00
abstract::Two techniques for growing colonies of human tumour cells in soft agar have been applied to cell suspensions derived from fresh tumour tissue from 48 patients. Colonies were obtained in 31 cases, with plating efficiencies between 0.01 and 15%. In 11 cases the plating efficiencies were 1% or above. There was evidence t...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1978.165
更新日期:1978-07-01 00:00:00
abstract::Transforming growth factor alpha (TGF alpha) and Transforming growth factor beta-1 (TGF-beta 1) are growth regulatory for breast cancer cell lines in vitro and several studies have suggested that levels of the receptor for TGF alpha, the epidermal growth factor (EGFR) in tumour biopsies predict relapse and survival. W...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.1993.261
更新日期:1993-06-01 00:00:00
abstract::ApoE single nucleotide polymorphisms (SNPs) Cys112Arg (Epsilon-4), and Arg158Cys (Epsilon-2) have been implicated in cardiovascular and Alzheimer's disease, but their role in colorectal cancer (CRC) has not been extensively studied. We investigated whether ApoE polymorphisms alone or in combination with dietary factor...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6605097
更新日期:2009-06-16 00:00:00
abstract::To clarify the mechanism of acquired CDDP resistance in ovarian cancer, we compared the microsatellite instability (MSI) by the amplification of 10 microsatellite loci and immunohistochemical detection of hMSH2 and hMLH1 expression between the primary resected tumours and the secondary resected residual tumours after ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1054/bjoc.2001.2037
更新日期:2001-09-28 00:00:00
abstract:BACKGROUND:Neuroblastoma is the most common malignancy of infancy but little is known about the aetiological factors associated with the development of this tumour. A number of epidemiological studies have previously examined the risk associated with paternal occupational exposures but most have involved small numbers ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6605504
更新日期:2010-02-02 00:00:00
abstract::We previously demonstrated a characteristically high sensitivity of pancreatic cancer cells to interferon alpha (IFN-alpha) gene transfer, which induced a more prominent growth suppression and cell death in pancreatic cancer cells than in other types of cancers and normal cells. The IFN-alpha protein can exhibit both ...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/sj.bjc.6602713
更新日期:2005-08-22 00:00:00
abstract:BACKGROUND:Bortezomib is a proteasome inhibitor with minimal clinical activity as a monotherapy in solid tumours, but its combination with other targeted therapies is being actively investigated as a way to increase its anticarcinogenic properties. Here, we evaluate the therapeutic potential of co-treatment with bortez...
journal_title:British journal of cancer
pub_type: 杂志文章
doi:10.1038/bjc.2011.546
更新日期:2012-01-17 00:00:00