Abstract：
:The aim of this work was to test in vitro and in vivo the efficacy of the derivatives of 5-aminolevulinic acid (ALA): hexyl-ALA (He-ALA), undecanoyl-ALA and R,S-2-(hydroximethyl)tetrahydropyranyl-ALA (THP-ALA) as pro-photosensitising agents. The compounds were assayed in a cell line derived from a murine mammary tumour, in tumour explants and after injection of the cells into mice. In vitro, undecanoyl-ALA and THP-ALA did not improve ALA efficacy in terms of porphyrin synthesis. On the other hand, half of the amount of ALA is required to obtain the same plateau amount of photosensitiser from He-ALA. However, this plateau value cannot be surpassed in spite of the four-times higher accumulation of ALA/He-ALA from the ALA derivative. This shows that He-ALA conversion to porphyrins but not He-ALA entry to the cells is limiting. Employing ionic exchange chromatography, we found that 80% of total uptake was He-ALA whereas only 20% was ALA. This suggests that the esterases, probably themselves regulated by the heme pathway, are limiting the conversion of ALA derivatives into porphyrins. A similar situation occurs with THP-ALA. Tumour explant porphyrin results correlate well with cell line data. However, i.p. injection of ALA derivatives to mice resulted in a lower porphyrin concentration in the tumour when compared to the administration of equimolar amounts of ALA, indicating that there should be retention of ALA derivatives either within the blood vessels in the initial phase of distribution and/or within the capillaries of the tumour.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Perotti C,Fukuda H,DiVenosa G,MacRobert AJ,Batlle A,Casas Adoi
10.1038/sj.bjc.6601722subject
Has Abstractpub_date
2004-04-19 00:00:00pages
1660-5issue
8eissn
0007-0920issn
1532-1827pii
6601722journal_volume
90pub_type
杂志文章abstract：INTRODUCTION:This paper reports on an ongoing primary care audit of cancer referrals undertaken in Scotland in 2006-2007 and 2007-2008. METHODS:General practitioners (GPs) in Scotland were asked to review all new cancer diagnoses within their practice during the preceding year. RESULTS:4181 patients were identified i...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6605397
更新日期：2009-12-03 00:00:00
abstract：:A new cancer-associated antigen CA130, recognised by two monoclonal antibodies (moABs) 130-22 and 145-9, was often found to be present at high levels in the sera of patients with ovarian cancer. There was a strong correlation between CA130 and CA125 values. The epitopes recognised by moABs 130-22 and 145-9 were proved...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1993.46
更新日期：1993-02-01 00:00:00
abstract：:The influence of human serum albumin (HA) on the biological effects of 13 chemotherapeutic agents was studied in vitro in the human leukaemia cell line MOLT-3. On the basis of changes in biological activity influenced by HA, these drugs may be divided into three types. Type I agents include cis-diamminedichloroplatinu...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1980.103
更新日期：1980-04-01 00:00:00
abstract：:This is a retrospective study of 520 patients with lung cancer, seen at the Tata Memorial Hospital between 1963 and 1970. Matched controls were obtained from those patients who came to the hospital within the same period and who were diagnosed as not having cancer. The patients and controls were matched for age, sex a...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1974.100
更新日期：1974-06-01 00:00:00
abstract：BACKGROUND:The distinct expression pattern of tumour-associated antigens (TAAs) might be a critical reason for the inefficacy of immunity-based treatments and heterogeneous postsurgical recovery in patients with solid tumours, including hepatocellular carcinoma (HCC). However, little is known about the clinical value o...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2013.390
更新日期：2013-08-20 00:00:00
abstract：:Temozolomide, an oral cytotoxic agent with approximately 100% bioavailability after one administration, has demonstrated schedule-dependent clinical activity against highly resistant cancers. Thirty patients with minimal prior chemotherapy were enrolled in this phase I trial to characterize the drug's safety, pharmaco...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/sj.bjc.6690802
更新日期：1999-11-01 00:00:00
abstract：:The frequency, in women with breast cancer, of mutations and other variants in the susceptibility gene, BRCA1, was investigated using a population-based case-control-family study. Cases were women living in Melbourne or Sydney, Australia, with histologically confirmed, first primary, invasive breast cancer, diagnosed ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6690008
更新日期：1999-01-01 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：BACKGROUND:Late effects of cisplatin-based chemotherapy in testicular cancer survivors (TCS) include cardiovascular morbidity, but little data is available beyond 20 years. The objective was to assess vascular damage in very long-term TCS. METHODS:TCS (treated with chemotherapy or orchiectomy only) and age-matched hea...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/s41416-020-01049-3
更新日期：2020-11-01 00:00:00
abstract：:Monocyte-macrophage series have an important role in host surveillance against cancer. The cytotoxic/cytostatic activity of macrophages is, to a great extent, attributed to the up-regulation of inducible nitric oxide synthase (iNOS) and production of nitric oxide (NO). Here, in 28 patients with primary lung cancer and...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1998.528
更新日期：1998-08-01 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：BACKGROUND:The germline BRCA2 mutation is associated with increased prostate cancer (PrCa) risk. We have assessed survival in young PrCa cases with a germline mutation in BRCA2 and investigated loss of heterozygosity at BRCA2 in their tumours. METHODS:Two cohorts were compared: one was a group with young-onset PrCa, t...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6605822
更新日期：2010-09-07 00:00:00
abstract：BACKGROUND:In 2006, the National Health Service Bowel Cancer Screening Programme in England (NHSBCSP) began offering routine population-based biennial faecal occult blood testing (FOBt) at ages 60-69. There is, however, limited information on how characteristics of individuals affect participation and outcomes of scree...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2015.69
更新日期：2015-04-28 00:00:00
abstract：:Epidermal growth factor receptor (EGFR) was studied in ovarian tumours with immunohistochemical (IH) and ligand-binding assay (LBA). Two different monoclonal antibodies (MoAbs: 2E9, EGFR1) with respect to detecting EGFR with different ligand-binding affinities (low, high and low) were used. When comparing the IH data ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1992.403
更新日期：1992-12-01 00:00:00
abstract：:Follicular-phase (Day 11) plasma prolactin, and plasma and urinary oestrogen levels of 70 nulliparous nuns were compared with those of 80 of their sisters, of whom 62 were parous. The nuns and their nulliparous sisters did not differ significantly in their prolactin and oestrogen levels. No differences in plasma oestr...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1981.121
更新日期：1981-06-01 00:00:00
abstract：:Bryostatin 1 is a novel antitumour agent derived from Bugula neritina of the marine phylum Ectoprocta. Nineteen patients with advanced solid tumours were entered into a phase I study to evaluate the toxicity and biological effects of bryostatin 1. Bryostatin 1 was given as a one hour intravenous infusion at the beginn...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/bjc.1993.352
更新日期：1993-08-01 00:00:00
abstract：:The malignant epithelial cells of nasopharyngeal carcinoma (NPC) and cells of lines derived form the lymphoid cells which infiltrate this tumour have been investigated cytogenetically. Chromosome spreads of lymphoblastoid cells of lines established from 7 different NPC biopsy specimens were examined after banding stai...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1978.31
更新日期：1978-02-01 00:00:00
abstract：:A score based on the combination of the systemic inflammatory response and albumin hazards ratio (HR) 1.70, 95% CI 1.23 - 2.35, P=0.001) was comparable in prognostic value to that based on stage and performance status (HR 1.48, 95% CI 1.12 - 1.95, P=0.006) in patients with inoperable non-small-cell lung cancer. The fo...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601242
更新日期：2003-09-15 00:00:00
abstract：:Pamidronate belongs to the class of nitrogen-containing bisphosphonates that are potent inhibitors of bone resorption frequently used for the treatment of osteoporosis and cancer-induced osteolysis. The inhibition of osteoclasts' growth has been suggested as the main mechanism of the inhibitory effect of pamidronate o...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6600476
更新日期：2002-07-29 00:00:00
abstract：BACKGROUND:Bevacizumab has broad anti-tumour activity, but substantial risk of hypertension. No reliable markers are available for predicting bevacizumab-induced hypertension. METHODS:A genome-wide association study (GWAS) was performed in the phase III bevacizumab-based adjuvant breast cancer trial, ECOG-5103, to eva...
journal_title：British journal of cancer
pub_type： 杂志文章,随机对照试验
doi：10.1038/bjc.2014.430
更新日期：2014-09-09 00:00:00
abstract：:Photodynamic activation of macrophage-like cells contributes to an effective outcome of photodynamic therapy (PDT) treatment. The possibility for an enhancement of macrophage activity by photosensitization with meta-tetra(hydroxyphenyl)chlorin (mTHPC) (1 microg ml(-1)) was studied in U937, monocyte cell line different...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6690648
更新日期：1999-09-01 00:00:00
abstract：:Cultured cells maintained in very low oxygen levels alter their structure, metabolism and genetic expression. Culture conditions for cells were modified to minimise variation of nutrients and to allow normal survival levels after 24 h of hypoxic exposure. Under these hypoxic conditions, glucose consumption and lactate...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1990.264
更新日期：1990-08-01 00:00:00
abstract：:Laminin-332 is major component of epithelial basement membrane, and has an important role in cell migration and tumour invasion. Recently, the phosphatidylinositol 3-kinase (PI3K) activation induced by laminin-332 during carcinogenesis or tumour invasion has been highlighted in skin squamous cell carcinoma. The expres...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6604252
更新日期：2008-03-11 00:00:00
abstract：:Protein kinase C (PKC) has a critical role in several signal transduction pathways, and is involved in renal cancer pathogenesis. Bryostatin-1 modulates PKC activity and has antitumour effects in preclinical studies. We conducted a multicentre phase II clinical trial in patients with advanced renal cancer to determine...
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.6601321
更新日期：2003-10-20 00:00:00
abstract：:A comparative study has been made of fibroblasts obtained from patients with differing susceptibilities to malignant disease, both with respect to their chromosome complements and their transformation with SV40 virus. Fibroblasts from 2 Bloom's syndrome patients were found not to have raised SV40 transformation rates ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1977.235
更新日期：1977-11-01 00:00:00
abstract：:We evaluated the degree of tubular differentiation in 172 samples of invasive ductal breast cancer in order to determine numerical thresholds for histological breast cancer grading. The tubular differentiation in each sample was defined as the fraction of fields showing tubular differentiation (FTD). The analysis was ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1054/bjoc.2000.1222
更新日期：2000-05-01 00:00:00
abstract：:Tumour-associated prostaglandin-like material, assessed by bioassay, has been examined in 37 patients with primary and metastatic squamous carcinomas of the head and neck, previously treated by radiotherapy and chemotherapy followed by radical surgery. High amounts of prostaglandin-like material were extracted from tu...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1980.31
更新日期：1980-02-01 00:00:00
abstract：BACKGROUND:Period analysis is increasingly used to compute long-term cancer survival, as it provides better prediction of survival of newly diagnosed patients than traditional cohort analysis. However, the patient population to which period survival estimates best pertain to and which should be described in a study is ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2013.14
更新日期：2013-02-19 00:00:00
abstract：:Large primary breast tumours and extensive lymph node involvement are linked to a high rate of local recurrence after surgery. In 10-20% of such high-risk breast cancer patients, local relapse will occur despite postoperative radiotherapy. In the present study, we investigated whether molecular features, such as angio...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/sj.bjc.6600755
更新日期：2003-03-10 00:00:00
abstract：BACKGROUND:Tumoural interstitial hypertension, possibly modulated by platelet-derived and vascular endothelial growth factor receptors (PDGFR and VEGFR), may mediate resistance to chemotherapy. METHODS:Forty-eight patients with advanced solid tumours received oral PDGFR inhibitor CP-868,596 (60-100 mg twice daily (BID...
journal_title：British journal of cancer
pub_type： 杂志文章,多中心研究
doi：10.1038/sj.bjc.6605941
更新日期：2010-11-09 00:00:00
