Abstract:
:The intra-cellular uptake of the weakly basic radiosensitiser pimonidazole (PIMO) was determined as a function of the pigmentation of Na11+ human melanotic melanoma cells in vitro. Two experimental conditions were considered: exponentially growing cells (Exp.) and plateau-phase cells (PI.). The melanin content of Na11+ cells ranged from 500 micrograms/g cell weight in exponentially growing cells to 6000 micrograms/g in heavily pigmented plateau-phase cells. Cells were exposed to PIMO (medium dose, 0.2 mmol/dm3; 58.2 micrograms/ml). The intra-cellular concentration ranged from 163 micrograms/g in Exp. to 900 micrograms/g in pigmented Pl.; the latter being equivalent to an intra- to extracellular concentration ratio (Ci/Ce) of 17. However, this increase in the cellular uptake of PIMO was not accompanied by an increase in radiosensitising efficiency. In comparison, the Ci/Ce for etanidazole (ETA), a radiosensitiser that is uncharged at physiological pH, remained approximately constant at 1 for all values of melanin contents. Treatment of Na11+ tumours in vivo with [3H]-PIMO resulted in a tumour:blood ratio of about 3 at 30-60 min after administration. However, at 24 h a grain count of label derived from [3H]-PIMO showed that picnotic areas of tumours contained levels that were some 40 times greater than the background value. This high level of label was coincident with areas of highest apparent melanin content. In conclusion, PIMO accumulates in very heavily pigmented melanoma cells present in necrotic zones with picnosis. As these cells are probably non-clonogenic, PIMO is not suitable for use in melanoma radiotherapy.
journal_name
Cancer Chemother Pharmacoljournal_title
Cancer chemotherapy and pharmacologyauthors
el Gamoussi R,Threadgill MD,Prade M,Stratford IJ,Guichard Mdoi
10.1007/BF00685671subject
Has Abstractpub_date
1993-01-01 00:00:00pages
277-82issue
4eissn
0344-5704issn
1432-0843journal_volume
31pub_type
杂志文章abstract:OBJECTIVE:SDX-101 is the non-cyclooxygenase 2-inhibiting R-enantiomer of the non-steroid anti-inflammatory drug etodolac, and has anti-tumour activity in chronic lymphocytic leukaemia (CLL). SDX-308 and SDX-309 are more potent, structurally related indole-pyran analogues of SDX-101. The current study was performed to i...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-006-0400-9
更新日期:2007-09-01 00:00:00
abstract:BACKGROUND:In this phase II clinical trial, we evaluated the efficacy and safety of S-1 monotherapy in patients with previously treated advanced non-small-cell lung cancer (NSCLC). We also measured plasma concentrations of 5-fluorouracil (5-FU) and 5-chloro-2,4-dihydroxypyridine components of S-1 and examined correlati...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-011-1795-5
更新日期:2012-04-01 00:00:00
abstract:PURPOSE:Neoadjuvant CT-P6, a trastuzumab biosimilar, demonstrated equivalent efficacy to reference trastuzumab in a phase 3 trial of HER2-positive early-stage breast cancer (EBC) (NCT02162667). We report post hoc analyses evaluating pathological complete response (pCR) and breast pCR alongside additional efficacy and s...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00280-019-03920-4
更新日期:2019-10-01 00:00:00
abstract::Fifty-one patients with non-small cell lung cancer (NSCLC) were treated, during a phase II trial, with 4'demethylepipodophyllotoxin-beta-D-ethylidene glucoside (VP16-213). Forty-nine were evaluable for response, and of these two (4%) had partial responses lasting 5 and 6 months. Prior treatment with chemotherapy may h...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00254550
更新日期:1982-01-01 00:00:00
abstract::Acute promyelocytic leukemia (APL) is characterized by the expansion of malignant myeloid cells blocked at the promyelocytic stage of hemopoietic development and is invariably associated with reciprocal chromosomal translocations involving the retinoic acid receptor alpha (RARalpha) gene on chromosome 17. RARalpha var...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,评审
doi:10.1007/s002800100322
更新日期:2001-08-01 00:00:00
abstract:PURPOSE:To assess the safety of the association of radiotherapy (RT) and systemic treatments for patients with metastatic malignant melanoma (mMM). METHODS:A retrospective analysis included consecutive patients treated with palliative RT, and at least one line of systemic therapy for mMM between 2001 and 2016. Treatme...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-019-03806-5
更新日期:2019-05-01 00:00:00
abstract::The pharmacokinetics of mitomycin (MMC) was studied in Wistar rats. Up to five half-lives, the plasma concentration-time curve was biphasic. The AUC changed linearly with increasing doses between 0.5 and 7.5 mg/kg, which corresponds to 0.2 and 3 times the LD50 value in rats. Most of the drug was metabolized, and only ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00257305
更新日期:1988-01-01 00:00:00
abstract::Tumor angiogenesis is essential for tumor growth and metastasis formation. Luminex methodology was used to measure the levels of four angiogenic cytokines in cell culture medium and in the plasma of mice bearing human tumors. We obtained plasma and conditioned culture medium from 12 different human tumor cell lines. T...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-003-0572-5
更新日期:2003-04-01 00:00:00
abstract::Pyrazine diazohydroxide (sodium salt, NSC 361456; PZDH) is a new antitumor drug with relatively broad activity in initial evaluations against murine leukemias, solid tumors, and two human tumor xenografts in vivo. The present studies were designed to address questions about PZDH activity on different treatment schedul...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00686053
更新日期:1990-01-01 00:00:00
abstract::In a pilot study of cyclical chemotherapy in patients with poor-prognosis non-Hodgkin's lymphoma (NHL), high-dose methotrexate (MTX) 1 g/m2 with folinic acid rescue was given as initial treatment and then between cycles of a single-arm CHOP combination administered every 4 weeks. Of 21 patients with previously untreat...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00254195
更新日期:1983-01-01 00:00:00
abstract::Copovithane is an uncharged, water-soluble, synthetic polymer with an average molecular weight of 5800 daltons. It demonstrates antitumor activity in vivo against a variety of tumors in animal models but is inactive in vitro. This agent has been found to have immunorestorative activity in man. In concert with its phas...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00273396
更新日期:1986-01-01 00:00:00
abstract::Methylene blue (MB) is a phenothiazine with radio and photosensitizing properties and anti-tumoral activity. Our group has shown that MB was capable of inhibiting the in vitro growth of erythroleukemic cells with multidrug resistance (MDR). However, there are no studies comparing the cytotoxicity of this molecule for ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-005-1014-3
更新日期:2005-12-01 00:00:00
abstract:PURPOSE:Pemetrexed, a multi-targeted antifolate that disrupts synthesis of both purines and pyrimidines, is approved for use in malignant pleural mesothelioma and non-small cell lung cancer. Pemetrexed is currently being evaluated for anti-tumor activity in a variety of solid and central nervous system tumors. We studi...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-006-0285-7
更新日期:2007-03-01 00:00:00
abstract:PURPOSE:To gain a better understanding of the impact of postprogression survival (PPS) and post-trial anticancer therapy on overall survival (OS) in first-line pancreatic cancer patients. METHODS:A literature search identified 54 randomized trials, focusing on gemcitabine monotherapy to eliminate effects of heterogene...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s00280-017-3263-3
更新日期:2017-03-01 00:00:00
abstract::We determined the kinetic parameters that describe the effect of 20 different modulators of the multidrug resistance pump on the reversal of cytotoxin accumulation in a resistant strain of P388 leukemia cells (P388/ADR), and on the reversal of cell killing for these cells. When measured by a direct comparison of the a...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800050468
更新日期:1996-01-01 00:00:00
abstract::To evaluate toxicity and efficacy of chemotherapy in elderly patients (> or = 65 years of age) with advanced colorectal cancer, data from two consecutive trials conducted between 1984 and 1995 at the National Institute for Cancer Research were analysed comparing the results of treatment in those 65 years of age or old...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s002800050826
更新日期:1998-01-01 00:00:00
abstract:PURPOSE:Docetaxel, capecitabine, and cisplatin are effective chemotherapeutic agents for breast cancer with significant synergistic cytotoxicity demonstrated by in vitro studies. The purpose of this study was to assess the efficacy of a combination of docetaxel, capecitabine, and cisplatin (TXP) in patients diagnosed w...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-010-1401-2
更新日期:2011-06-01 00:00:00
abstract:BACKGROUND:The role of adjuvant therapy in pancreatic cancer remains controversial. Gemcitabine given systemically seems to be effective; intra-arterial chemotherapy (IAC) has a deep rationale. PATIENTS AND METHODS:The goal was to evaluate the impact of postoperative IAC followed or not by systemic gemcitabine in pati...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/s00280-006-0200-2
更新日期:2006-10-01 00:00:00
abstract:PURPOSE:Gastric cancer is one of the leading cancerous diseases worldwide. It is diagnosed often at the advanced stage for which chemotherapy is the main treatment option. The prognosis remains poor for metastatic, especially the diffuse type, gastric cancers. We investigated the efficacy of intravenously administered ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-009-1222-3
更新日期:2010-09-01 00:00:00
abstract:PURPOSE:To investigate the activity and tolerance of pegylated liposomal doxorubicin in combination with vinorelbine in pretreated patients with metastatic breast cancer. PATIENTS AND TREATMENT:Thirty-six women with metastatic breast cancer were enrolled. The median age was 64 years, 80% of the patients had a performa...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-006-0236-3
更新日期:2006-12-01 00:00:00
abstract:BACKGROUND AND AIMS:oxaliplatin in combination with folinic acid (FA) and infusional 5-fluorouracil (5-FU) has shown significant anti-tumor activity in gastric cancer patients (FOLFOX). Previous studies have shown that gemcitabine (GEM), a new fluorinated anti-metabolite, enhances the individual anti-tumor activity of ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-005-1024-1
更新日期:2005-12-01 00:00:00
abstract:PURPOSE:Veliparib is an oral inhibitor of poly(ADP-ribose) polymerase enzyme. Combination of veliparib and temozolomide was well-tolerated and demonstrated clinical activity in older patients with relapsed or refractory acute myeloid leukemia (AML) or AML arising from pre-existing myeloid malignancies. We aimed to perf...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-018-3731-4
更新日期:2019-02-01 00:00:00
abstract:PURPOSE:The study was undertaken to determine the metabolism of dexrazoxane (ICRF-187) to its one-ring open hydrolysis products and its two-rings opened metal-chelating product ADR-925 in cancer patients with brain metastases treated with high-dose etoposide. In this phase I/II trial dexrazoxane was used as a rescue ag...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-003-0619-7
更新日期:2003-08-01 00:00:00
abstract::Treosulfan (L-threitol 1,4-bismethanesulfonate, Ovastat) is an alkylating agent and a structural analogue of busulfan. It has been established in the clinical chemotherapy of human ovarian carcinomas for several years and has additionally been shown to be effective against xenografted human breast carcinomas. No other...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00688319
更新日期:1996-01-01 00:00:00
abstract::Pancreatic cancer is the fourth leading cause of cancer-related deaths in the USA, with a 5-year survival rate of 6 %. Anti-hyperglycemic treatments for type 2 diabetes mellitus that induce hyperinsulinemia (i.e., sulfonylureas) are thought to increase cancer risk, whereas treatments that lower insulin resistance and ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,评审
doi:10.1007/s00280-015-2948-8
更新日期:2016-02-01 00:00:00
abstract::The cellular metabolism of 3'-amino-2',3'-dideoxycytidine (3'-NH2-dCyd), a cytotoxic agent previously reported to be a poor substrate for purified Cyd/dCyd deaminase (dCydD), was compared with that of cytosine arabinoside (ara-C) in cells that displayed dCydD activity (HeLa) and in cells that did not (L1210). Growth i...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00686406
更新日期:1992-01-01 00:00:00
abstract:PURPOSE:To evaluate the feasibility, toxicity and efficacy of the combination of docetaxel and mitomycin C as second-line chemotherapy in patients with advanced non-small cell lung cancer (NSCLC). PATIENTS AND METHODS:Thirty-eight patients with histologically confirmed, locally advanced or metastatic NSCLC were includ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-006-0198-5
更新日期:2006-10-01 00:00:00
abstract:PURPOSE:We have developed and evaluated a CNS-targeted chemotherapy regimen based on the pharmacokinetic properties of the individual drugs in the combination. PATIENTS AND METHODS:In a twin-track study, 16 patients with secondary CNS lymphoma (SCNSL) and 8 with primary CNS lymphoma (PCNSL) were treated with IDARAM wh...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/s00280-003-0737-2
更新日期:2004-04-01 00:00:00
abstract:PURPOSE:Fenretinide is a synthetic retinoid with activity in prostate cancer and other cell lines. The aim of this study was to assess the efficacy and tolerability of fenretinide in chemotherapy-naïve men with hormone refractory prostate cancer. METHODS:Eligibility criteria included hormone refractory prostate cancer...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-009-1228-x
更新日期:2010-10-01 00:00:00
abstract:PURPOSE:The aim was to investigate in patients receiving doxorubicin whether any alteration in myocardial oxidative metabolism or blood flow as assessed by positron emission tomography (PET) could be observed either after the first dose of the drug, or during its chronic administration. METHODS:Six female non-heart-fa...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800051005
更新日期:2000-01-01 00:00:00