Abstract：
:In spite of the wide range of tumours successfully treated with 5-aminolevulinic acid mediated photodynamic therapy, the fact that 5-aminolevulinic acid has low lipid solubility, limits its clinical application. More lipophilic 5-aminolevulinic acid prodrugs and the use of liposomal carriers are two approaches aimed at improving 5-aminolevulinic acid transmembrane access. In this study we used both 5-aminolevulinic acid and its hexyl ester in their free and encapsulated formulations to compare their corresponding endogenous synthesis of porphyrins. Employing murine tumour cultures, we found that neither the use of hexyl ester nor the entrapment of either 5-aminolevulinic acid or hexyl ester into liposomes increase the rate of tumour porphyrin synthesis. By light and electronic microscopy it was demonstrated that exposure of tumour explants to either free or liposomal 5-aminolevulinic acid and subsequent illumination induces the same type of subcellular damage. Mitochondria, endoplasmic reticulum and plasma membrane are the structures mostly injured in the early steps of photodynamic treatment. In a later stage, cytoplasmic and nuclear disintegration are observed. By electronic microscopy the involvement of the endocytic pathway in the incorporation of liposomal 5-aminolevulinic acid into the cells was shown.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Casas A,Perotti C,Saccoliti M,Sacca P,Fukuda H,Batlle AMdoi
10.1038/sj.bjc.6600144subject
Has Abstractpub_date
2002-03-04 00:00:00pages
837-42issue
5eissn
0007-0920issn
1532-1827journal_volume
86pub_type
杂志文章abstract：:We investigated the predictors of the risk of developing a second primary cancer after breast cancer, this occurring in about 12% of affected women. The analysis included 335 191 females, registered in the National Cancer Institute's Surveillance Epidemiology and End Results (SEER) database, who had been diagnosed wit...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6603172
更新日期：2006-06-05 00:00:00
abstract：:Gap junctions provide a route for small molecules to pass directly between cells. Toxic species may spread through junctions into 'bystander' cells, which may be exploited in chemotherapy and radiotherapy. However, this may be prevented by junction closure, and therefore an understanding of the dose-dependency of inhi...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601686
更新日期：2004-04-05 00:00:00
abstract：:Epidemiologic evidence has recently identified an association between an endemic outbreak of pleural and peritoneal mesothelioma in the Urgup region of Turkey and exposure to zeolite fibres. This malignancy is usually associated with exposure to asbestos dusts whose mineralogical characteristics differ from those of z...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1986.158
更新日期：1986-07-01 00:00:00
abstract：:Photoradiation therapy of cancer in the presence of haematoporphyrin derivative is based on a retention of porphyrin in malignant tissue. After long term incubation of NHIK 3025 cells in the presence of 25 microgram ml-1 haematoporphyrin derivative, one fraction is easily removed from the cells by washing with a serum...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1983.154
更新日期：1983-07-01 00:00:00
abstract：:The acute toxicity, pharmacokinetics and hypoxic cytotoxicity of RSU-1069 were investigated using the subcutaneous (sc) rat 9L tumour model. The pharmacokinetics were studied after i.p. injection of RSU-1069 (20 mg kg-1 or 100 mg kg-1). For both doses, the elimination of RSU-1069 followed first-order kinetics in both ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1991.116
更新日期：1991-04-01 00:00:00
abstract：BACKGROUND:The role of further hormone therapy in castration-resistant prostate cancer (CRPC) remains unclear. We performed a multi-centre randomised phase III study comparing the use of Dexamethasone, Aspirin, and immediate addition of Diethylstilbestrol (DAiS) vs Dexamethasone, Aspirin, and deferred (until disease pr...
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.2011.7
更新日期：2011-02-15 00:00:00
abstract：BACKGROUND:We evaluated the association between smoking status and thyroid cancer risk and whether this association is mediated by body mass index (BMI) and thyroid-stimulating hormone (TSH). METHODS:We performed a cohort study of 96,855 Korean adults who were followed annually or biennially for a median of 5.9 years....
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/s41416-018-0224-5
更新日期：2018-08-01 00:00:00
abstract：:The use of cytotoxic drug vincristine (VCR) is limited by the occurrence of peripheral neuropathy. A neurotrophic ACTH(4-9) analogue, ORG 2766, is being studied for its protective effect. Possible modulatory effects of ORG 2766 on tumour cell growth and interference with the cytotoxic efficacy of VCR were studied in t...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1994.90
更新日期：1994-03-01 00:00:00
abstract：:A cell-free plasmid reactivation assay was used to determine the fidelity of DNA double-strand break (DSB) repair in a panel of eight DSB repair-proficient human tumour cell lines. Nuclear protein extracts derived from radiosensitive tumour cells were less capable of correctly rejoining EcoRI-induced DSBs than were si...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1997.576
更新日期：1997-01-01 00:00:00
abstract：:Tumour-associated cell-surface glycoprotein is associated with tumour progression in gastric cancer. We investigated the biological significance of tumour-associated cell-surface glycoprotein, determined by the binding of Helix pomatia agglutinin (HPA), with regard to survival time and to the malignant potential of ca...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1995.192
更新日期：1995-05-01 00:00:00
abstract：BACKGROUND:Gram-negative bacteria mediated gemcitabine resistance in pre-clinical models. We determined if intratumoural lipopolysaccharide (LPS) detection by immunohistochemistry is associated with outcome in advanced pancreatic ductal adenocarcinoma (PDAC) treated with gemcitabine and non-gemcitabine containing 1st-l...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/s41416-020-01029-7
更新日期：2020-10-01 00:00:00
abstract：:Cells of a patient with Turcot's syndrome and of her parents were evaluated for the presence of molecular alterations in the p53 and the Ki-ras gene. Deletions on chromosome 17p, overexpression and point mutations of the p53 gene as well as mutations of the Ki-ras gene were detected in primary and metastatic tumour bu...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1993.379
更新日期：1993-09-01 00:00:00
abstract：:One hundred and eighteen doctors who treat pulmonary neoplasms in Ontario were asked how they would wish to be treated if they had non-small cell lung cancer. Four different scenarios were given. The physicians were then asked if they would consent to take part as subjects in one or more clinical trials for which they...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1986.224
更新日期：1986-10-01 00:00:00
abstract：:The purpose of the study was to evaluate the influence of baseline haemoglobin level in predicting response to 5-fluorouracil (5FU)-based first-line chemotherapy in advanced colorectal cancer patients. Data from 631 patients were collected from three different institutions. Globally, overall response rate was 35.8% (2...
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.6603204
更新日期：2006-07-03 00:00:00
abstract：:Monoclonal antibodies 19-9 and C-50 were used to assay the cancer associated tumour antigens CA 19-9 and CA-50 in plasma from patients with confirmed pancreatic cancer, and related to the blood group and Lewis blood cell status. The plasma expressions of CA 19-9 or CA-50 were similar, including cases where the patient...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1990.241
更新日期：1990-07-01 00:00:00
abstract：:The level of expression of keratinocyte growth factor (KGF) mRNA has been measured in human breast cell lines, purified populations of epithelial cells, myoepithelial cells and fibroblasts from reduction mammoplasty tissue and a panel of 42 breast cancers and 30 non-malignant human breast tissues using a semiquantitat...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1997.269
更新日期：1997-01-01 00:00:00
abstract：:A substantial excess risk of lymphomas and nonmelanoma skin cancer has been demonstrated following organ transplantation. Large sample size and long follow-up time may, however, allow more accurate risk estimates and detailed understanding of long-term cancer risk. The objective of the study was to assess the risk of ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6601219
更新日期：2003-10-06 00:00:00
abstract：:This study sought to examine changes in psychological distress following cancer genetic counselling. Women attending a family cancer clinic completed questionnaires before their appointment and at 2 weeks, 6 months and 12 months after their appointment. Twenty-six women were at low risk of developing breast or ovarian...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6600030
更新日期：2002-01-07 00:00:00
abstract：BACKGROUND:New therapeutic options for metastatic pancreatic cancer are urgently needed. In pancreatic cancer, overexpression of the epidermal growth factor receptor 2 (HER2) has been reported in up to 45%. This multicentre phase II study investigated the efficacy and toxicity of the HER2 antibody trastuzumab combined ...
journal_title：British journal of cancer
pub_type： 杂志文章,多中心研究
doi：10.1038/bjc.2012.18
更新日期：2012-03-13 00:00:00
abstract：:The vascular architecture of four different tumour cell lines (CaX, CaNT, SaS, HEC-1B) transplanted subcutaneously in mice was examined by means of microvascular corrosion casting in order to determine whether there is a characteristic vascular pattern for different tumour types and whether it differs significantly fr...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6690416
更新日期：1999-05-01 00:00:00
abstract：BACKGROUND:The natural history of prostate cancer is highly variable and difficult to predict accurately. Better markers are needed to guide management and avoid unnecessary treatment. In this study, we validate the prognostic value of a cell cycle progression score (CCP score) independently and in a prespecified linea...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2015.223
更新日期：2015-07-28 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：:Comfrey is a rat liver toxin and carcinogen that has been used as a vegetable and herbal remedy by humans. In order to evaluate the mechanisms underlying its carcinogenicity, we examined the mutagenicity of comfrey in the transgenic Big Blue rat model. Our results indicate that comfrey is mutagenic in rat liver and th...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602420
更新日期：2005-03-14 00:00:00
abstract：:There is disagreement concerning the expression of thyroid peroxidase (TPO) in thyroid cancer, some studies finding qualitative as well as quantitative differences compared to normal tissue. To investigate TPO protein expression and its antigenic properties, TPO was captured from a solubilizate of thyroid microsomes b...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1054/bjoc.2001.2015
更新日期：2001-09-14 00:00:00
abstract：:Collagen breakdown, and thus bone resorption, can now be assessed by measuring the urinary excretion of the collagen crosslinks, pyridinoline (Pyd) and deoxypyridinoline (Dpd). In a pilot study we measured Pyd and Dpd in 20 patients with breast cancer, ten with known bone metastases and ten with no recognised metastas...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1991.419
更新日期：1991-11-01 00:00:00
abstract：:In the family reported here, a mother and both of her children developed a Wilms tumour, and all three tumours were of the relatively rare monomorphous epithelial histopathological subtype. Using restriction fragment length polymorphism analysis, both sibs were shown to inherit the same maternal allele from the 11p13 ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1994.210
更新日期：1994-06-01 00:00:00
abstract：BACKGROUND:Panobinostat, a pan-deacetylase inhibitor, overcomes imatinib resistance in preclinical models of gastrointestinal stromal tumours (GIST). Here we determined the maximum tolerated dose (MTD) and dose-limiting toxicities (DLT) of panobinostat in combination with imatinib (IM) for treatment of patients with re...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2013.826
更新日期：2014-03-04 00:00:00
abstract：:Doxorubicin- and paclitaxel-selected variants of an in vitro invasive clonal population of the human breast cancer cell line, MDA-MB-435S, were established by pulse selection, and exhibited a novel 'superinvasive' phenotype. This phenotype is characterised by an ability to relocate to another surface following invasio...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602221
更新日期：2004-11-15 00:00:00
abstract：:Cancer-associated fibroblasts (CAFs) were originally presumed to represent a homogeneous population uniformly driving tumorigenesis, united by their morphology and peritumoural location. Our understanding of CAFs has since been shaped by sophisticated in vitro and in vivo experiments, pathological association and, mor...
journal_title：British journal of cancer
pub_type： 杂志文章,评审
doi：10.1038/s41416-019-0509-3
更新日期：2019-08-01 00:00:00
abstract：:Within a population-based cohort study, 40,708 men aged 45-79 years followed from 1998 to 2004. After adjusting for potential confounders, we observed a strong inverse linear association between total daily physical activity (PA) and death from cancer (n=1153). For each increment of 4 metabolic equivalent (MET)-h day(...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6604354
更新日期：2008-06-03 00:00:00
