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 behaviour of 3 ALA derivatives (ALA methyl-ester, hexyl ester and a 2-sided derivative) regarding PPIX formation, efficiency in photosensitizing cells and mechanism of cellular death. The maximum amount of porphyrins synthesized from 0.6 mM ALA was 47 +/- 8 ng/10(5)cells. The same amount was formed by a concentration 60-fold lower of hexyl-ALA and 2-fold higher of methyl-ALA. The 2-sided derivative failed to produce PPIX accumulation. Applying a 0.6 J cm(-2)light dose, cell viability decreased to 50%. With the 1.5 J cm(-2) light dose, less than 20% of the cells survive, and higher light doses produced nearly total cell killing. Comparing the PPIX production and the induced phototoxicity, the more the amount of porphyrins, the greater the cellular killing, and PPIX formed from either ALA or ALA-esters equally sensitize the cells to photoinactivation. ALA-PDT treated cells exhibited features of apoptosis, independently on the pro-photosensitizer employed. ALA-PDT can be improved with the use of ALA derivatives, reducing the amount of ALA necessary to induce efficient photosensitization.
journal_name
Br J Cancerjournal_title
British journal of cancerauthors
Casas A,Fukuda H,Di Venosa G,Batlle Adoi
10.1054/bjoc.2001.1875subject
Has Abstractpub_date
2001-07-20 00:00:00pages
279-84issue
2eissn
0007-0920issn
1532-1827pii
S0007092001918750journal_volume
85pub_type
杂志文章abstract：:The human gene sequences encoding the translation-associated functions of alpha-subunit of elongation factor 1 (EF-1 alpha) and the ubiquitin carboxyl extension protein (HUBCEP80) have been isolated by differential cDNA screening, and found to have significantly higher levels of expression in fibroadenomas (benign) co...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1992.12
更新日期：1992-01-01 00:00:00
abstract：BACKGROUND:A major molecular pathway of genetic instability in cancer is DNA mismatch repair deficiency. High-level microsatellite instability (MSI-H) is currently the best predictor of responsiveness towards immune checkpoint blockade. Data about the prevalence of high-level microsatellite instability in cholangiocarc...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/s41416-018-0199-2
更新日期：2019-01-01 00:00:00
abstract：:High-mol.-wt levan injected locally inhibits the growth of Lewis lung carcinoma in C57BL mice. The inhibition is dependent on the number of tumour cells injected and on the dose of levan. The inhibition decreases tumour incidence and size as well as prolonging survival. The polysaccharide is most effective when inject...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1979.225
更新日期：1979-10-01 00:00:00
abstract：:A phase I study of the bispecific antibody MDX-H210 in combination with granulocyte colony-stimulating factor (G-CSF) was performed in stage IV breast carcinoma patients, overexpressing HER-2/neu. MDX-H210, constructed by crosslinking antigen binding fragments (F(ab') fragments) of monoclonal antibody (mAb) H22 to Fc ...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/sj.bjc.6601367
更新日期：2003-12-15 00:00:00
abstract：:We investigated whether cholecystectomy is associated with subsequent cancer and, if so, whether the association is likely to be causal, by undertaking a retrospective cohort study using linked medical statistics, comprising a cholecystectomy group (n=39 254) and a reference cohort admitted for a range of other medica...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6602392
更新日期：2005-04-11 00:00:00
abstract：:The conventional diffusion chamber (CDC) as described by Benestad (1970) had been modified to assay the colony forming capacity of RFM bone marrow and spleen cells in agar diffusion chambers (ADCs). The colonies are morphologically identical to those formed by the CFUc in agar culture in vitro and have an incidence of...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1974.216
更新日期：1974-11-01 00:00:00
abstract：:Portal vein embolisation (PVE) is used to increase the remnant liver volume before major liver resection for colorectal metastases. The resection rate after PVE is 60-70%, mainly limited by disease progression. The effect of PVE on tumour growth rate has not been investigated. The objective of this study was to compar...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/sj.bjc.6604872
更新日期：2009-02-24 00:00:00
abstract：BACKGROUND:Around 60% of women ≥ 80 years old, in the UK do not have surgery for their breast cancer (vs<10% of younger age groups). The extent to which this difference can be accounted for by co-morbidity has not been established. METHODS:A Cancer Registry/Hospital Episode Statistics-linked data set identified women ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2012.192
更新日期：2012-09-25 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：:Human topoisomerase II enzymes are targets for a number of widely used anticancer agents. We have analysed a lung adenocarcinoma cell line CALU3, which has co-amplified topoisomerase II alpha and ERBB2 sequences, for the structure of the amplicon and for expression of both topoisomerase II alpha and beta. The region o...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1993.430
更新日期：1993-10-01 00:00:00
abstract：:Platinum diamine dichloride and tetrachloride inhibit the formation of antibody-forming cells in the mouse spleen after injection of sheep red cells. The dichloride is the more effective agent. It acts best when given 2 days after the antigen, which suggests that cells are more sensitive to its action when they are ra...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1971.27
更新日期：1971-03-01 00:00:00
abstract：:Wistar rats were sensitized to rat embryonic tissue by immunization with irradiated (5000 rad) rat embryo cells (2 X 10(6) s.c. + 1 X 10(6) i.p.) derived from embryos aged 14-15 days, or by implantation of irradiated (5000 rad) tissue grafts from these embryos. Three to five immunizations were given at weekly interval...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1976.94
更新日期：1976-06-01 00:00:00
abstract：:The NCA (nonspecific cross-reacting antigen) was assayed in sera of patients with chronic myeloid leukaemia (CML). It was elevated to a mean value of 145·6 ng/ml (± 104·4 ng/ml) compared to 37·8 ng/ml (± 14·6 ng/ml) the sera of normal subjects. Patients with active disease generally had higher serum NCA levels than th...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1982.269
更新日期：1982-11-01 00:00:00
abstract：BACKGROUND:Aspirin use has been shown to lower incidence and mortality in cancer patients. The aim of this population-based study was to determine the effect of postdiagnosis low-dose aspirin use on survival of patients with oesophageal cancer. METHODS:Patients with oesophageal cancer (1998-2010) were selected from th...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2016.65
更新日期：2016-04-26 00:00:00
abstract：BACKGROUND:We studied the biological significance of genes involved in a novel t(8;12)(p21.3;p13.31) reciprocal translocation identified in cervical squamous cell carcinoma (SCC) cells. METHODS:The rearranged genes were identified by breakpoint mapping, long-range PCR and sequencing. We investigated gene expression in...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2012.301
更新日期：2012-08-07 00:00:00
abstract：:Classification of lymphoid malignancy has changed markedly in recent years and advances have been made in therapy. This study investigated the variations in treatment and survival of 1622 patients in a population-based registry. A total of 1009 cases of malignant lymphoma (ML) were classified according to the Kiel cla...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1995.406
更新日期：1995-09-01 00:00:00
abstract：BACKGROUND:To report the long-term outcomes of a phase III trial designed to test two hypotheses: (1) elective nodal irradiation (ENI) is superior to conventional field irradiation (CFI), and (2) chemoradiotherapy plus erlotinib is superior to chemoradiotherapy in locally advanced oesophageal squamous cell cancer (ESCC...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/s41416-020-01054-6
更新日期：2020-11-01 00:00:00
abstract：:The triple drug combination consisting of irinotecan, oxaliplatin and 5-fluorouracil (FOLFOXIRI) has demonstrated higher activity and efficacy compared to the doublet FOLFIRI. 5-Fluorouracil could be substituted in FOLFOXIRI regimen by capecitabine, an oral fluoropyrimidine with similar efficacy. Recently, a dose-find...
journal_title：British journal of cancer
pub_type： 杂志文章,多中心研究
doi：10.1038/sj.bjc.6605075
更新日期：2009-06-02 00:00:00
abstract：BACKGROUND:Cabazitaxel is approved for treatment of castration-resistant metastatic prostate cancer. The current dosing strategy of cabazitaxel is based on body surface area (BSA). Body surface area is known as a poor predictor for total systemic exposure to drugs, since it does not take into account variability in act...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2017.91
更新日期：2017-05-09 00:00:00
abstract：:The efficacy of radioimmunotherapy of tumours with radiolabelled monoclonal antibodies (MAbs) depends on the amount of antibody taken up by the tumour and on its intratumoral distribution. In the case of MAbs directed against intracellular antigens, increasing the permeability of the cytoplasmic membrane may augment t...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1995.468
更新日期：1995-11-01 00:00:00
abstract：BACKGROUND:Despite the widespread use of neoadjuvant chemotherapy in breast cancer patients, prediction of individual response to treatment remains an unsolved clinical problem. Particularly, administration of an inefficient chemotherapeutic regimen should be avoided. Therefore, a better understanding of the molecular ...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/sj.bjc.6605909
更新日期：2010-10-12 00:00:00
abstract：BACKGROUND:Faecal immunochemical tests (FITs) have replaced guaiac-based faecal occult blood test (gFOBTs) in several colorectal cancer (CRC) screening programmes. We aimed to evaluate the benefits of this transition based on the Wallonia-Brussels-organised CRC screening programme. METHODS:A total of 1,569,868 individ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/s41416-020-0754-5
更新日期：2020-03-01 00:00:00
abstract：BACKGROUND:Clinical heterogeneity reflects the complexity of genetic events associated with neuroblastoma (NB). To identify the status of all described genetic loci with possible prognostic interest, high-throughput approaches have been used, but only with tumour cell content >60%. In some tumours, necrotic, haemorrhag...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.2011.188
更新日期：2011-06-28 00:00:00
abstract：:A partially purified fraction of the water soluble photosensitive dye sulphonated aluminium phthalocyanine (AlSPc) was encapsulated in liposomes which were then linked to a targeting monoclonal antibody 791T/36 using a heterobifunctional linking agent. The photocytotoxic effects of the liposomes were determined on two...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1989.73
更新日期：1989-03-01 00:00:00
abstract：:Bilateral kidney ligation of mice immediately before injection of misonidazole (MIS) prolongs the plasma half-life of this radiosensitizer from about 2 h (in normal mice) to 10-11 h, similar to that in man. Kidney ligation does not, however, change the relative proportions of MIS and its O-demethylated metabolite, Ro-...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1979.55
更新日期：1979-03-01 00:00:00
abstract：:To understand genetic events which play a role in the development and/or progression of human endometrial cancer, we studied allelotypes on all autosomal chromosomes, as well as chromosome X, with 42 microsatellite markers and 56 endometrial cancers. The most frequent loss of heterozygosity (LOH) was observed on the l...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1996.663
更新日期：1996-12-01 00:00:00
abstract：BACKGROUND:This randomised controlled trial examined the impact of screening for distress followed by two different triage methods on clinically relevant outcomes over a 12-month period. METHODS:Newly diagnosed patients attending a large tertiary cancer centre were randomised to one of the two conditions: (1) screenin...
journal_title：British journal of cancer
pub_type： 杂志文章,随机对照试验
doi：10.1038/bjc.2012.309
更新日期：2012-08-07 00:00:00
abstract：:The interaction between laminin and the oncoprotein encoded by the c-erbB-2 oncogene was studied in vitro and in vivo in human breast carcinomas. In vitro analysis of breast carcinoma cell lines overexpressing p185HER2 revealed that laminin, but not fibronectin, induced tyrosine phosphorylation and down-modulation of ...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1996.560
更新日期：1996-11-01 00:00:00
abstract：:BNP7787 (disodium 2,2'-dithio-bis-ethane sulphonate; Tavocept) is a novel agent developed to protect against cisplatin (cis-diammine-dichloroplatinum(II))-associated chronic toxicities. In this study, we determined the recommended dose of BNP7787 when preceding a fixed dose of cisplatin, the pharmacokinetics (PKs) and...
journal_title：British journal of cancer
pub_type： 临床试验,杂志文章
doi：10.1038/sj.bjc.6602553
更新日期：2005-05-09 00:00:00
abstract：:During the period 1943-1980 a significant increase in the incidence of neuroblastoma was seen in Denmark. The incidence increased from a level corresponding to that in Finland to a level corresponding to that in the USA, and the increase appears to be continuing. The increase relates to children aged under 5 years, an...
journal_title：British journal of cancer
pub_type： 杂志文章
doi：10.1038/bjc.1986.270
更新日期：1986-12-01 00:00:00
