Abstract:
:Etoposide is a widely used cytotoxic drug that requires complex formulation for both the i.v. and oral preparation to ensure drug stability. Data on the stability of the i.v. formulation when diluted in infusion fluids are contradictory, and there is little information on the stability of the oral preparation in gastric or intestinal fluids. The stability of both i.v. and oral etoposide was therefore evaluated in the present investigation. The stability of the i.v. preparation was investigated across a range of concentrations in infusion fluids, being determined by regular sampling for high-performance liquid chromatography (HPLC) analysis and by visual inspection. The stability of the oral preparation was studied in both artificial gastric and intestinal fluids, again with regular sampling for HPLC analysis, and the influence of pH, concentration and the addition of ethanol and bile salts on oral stability was determined. The i.v. preparation showed a marked decrease in stability with increasing drug concentration, but stability was additionally reduced in i.v. bags regularly sampled with a syringe and needle as compared with bags that were inspected visually only (minimal stability in sampled bags, 24 h at 0.5 mg/ml and 5 h at 1.0 mg/ml, as compared with 10 days and 18 h at the respective concentrations in unsampled bags). Stability was also greater at room temperature, 20-23 degrees C, as compared with 8-12 degrees C. Loss of stability was indicated by a decrease in etoposide concentration (measured by HPLC) and the appearance of a fine white precipitate, shown to be pure etoposide. Importantly, the appearance of precipitate was as sensitive as a specific HPLC assay in detecting loss of stability and was in many cases apparent when the etoposide concentration was within 5% of the starting concentration. The oral formulation also showed a marked concentration-dependent decrease in stability in artificial intestinal fluid at pH 7.5 (percentage of etoposide in solution after 2 h at 0.5, 1.0, 1.5 and 2.0 mg/ml, 94 +/- 2%, 80 +/- 5%, 68 +/- 13% and 41 +/- 9%, respectively). There was no concentration effect on stability in gastric fluid at pH 3.0, although stability was much greater at pH 3 and pH 5 as compared with pH 1 or in intestinal fluid at pH 7.5.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Cancer Chemother Pharmacoljournal_title
Cancer chemotherapy and pharmacologyauthors
Joel SP,Clark PI,Slevin MLdoi
10.1007/BF00685638subject
Has Abstractpub_date
1995-01-01 00:00:00pages
117-24issue
1-2eissn
0344-5704issn
1432-0843journal_volume
37pub_type
杂志文章abstract:PURPOSE:Sarcomas are a rare and heterogeneous variant of cancer. The standard of care treatment involves surgical resection with radiation in high-risk patients. Despite appropriate treatment approximately 50 % of patients will suffer and die from recurrent disease. The purpose of this article is to review the current ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s00280-016-3055-1
更新日期:2016-11-01 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: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:OBJECTIVE:Poly(ADP-ribosyl) polymerases (PARPs) are nuclear enzymes with roles in DNA damage recognition and repair. PARP1 inhibition enhances the effects of DNA-damaging agents like doxorubicin. We sought to determine the recommended phase two dose (RP2D) of veliparib with pegylated liposomal doxorubicin (PLD) in brea...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-020-04030-2
更新日期:2020-04-01 00:00:00
abstract:PURPOSE:To evaluate whether celecoxib alters the conversion of gemcitabine into its active metabolite, difluorodeoxycytidine triphosphate (dFdCTP), in peripheral blood mononuclear cells (PBMCs). METHODS:Patients with advanced pancreatic cancer who had not received chemotherapy and had acceptable organ function were el...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s00280-004-0916-9
更新日期:2005-06-01 00:00:00
abstract::The toxicity of single doses of the anthracycline epirubicin was compared in the rat after either the intravenous (i.v.; 2-6 mg/kg) or intraperitoneal (i.p.; 4-8 mg/kg) administration of the drug. These doses produced comparable acute toxicity that was characterised by a dose-dependent, transient reduction in body wei...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00257620
更新日期:1989-01-01 00:00:00
abstract:PURPOSE:To compare the response rates, toxicities and survival durations of elderly patients (70 years of age or more) with those of younger patients (less than 70 years of age) with non-small-cell lung cancer (NSCLC) treated with cisplatin-based chemotherapy. PATIENTS AND METHODS:We analyzed retrospectively the data ...
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/s002800050689
更新日期:1997-01-01 00:00:00
abstract:PURPOSE:Our study was designed to evaluate the efficacy and safety of everolimus in patients with pre-treated metastatic gastric and esophagus cancers in a US-based population focusing on biomarker correlation. METHODS:Patients with advanced upper GI adenocarcinomas who progressed after 1-2 prior regimens received eve...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-015-2744-5
更新日期:2015-07-01 00:00:00
abstract:PURPOSE:The antifolate pralatrexate (10-propargyl-10-deazaaminopterin, PDX) demonstrates greater in vitro and in vivo antitumor efficacy than methotrexate. Preclinical models indicated that the efficacy of pralatrexate may be enhanced by coadministration with probenecid. The aim of this phase I study was to determine t...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-005-0080-x
更新日期:2006-05-01 00:00:00
abstract:PURPOSE:We report on a statistical method for grouping anti-cancer drugs (GRAD) in single mouse trials (SMT). The method assigns candidate drugs into groups that inhibit or do not inhibit tumor growth in patient-derived xenografts (PDX). It determines the statistical significance of the group assignments without replic...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-019-03942-y
更新日期:2019-12-01 00:00:00
abstract:PURPOSE:While the target of many anticancer agents has been identified, the processes leading to killing of the cancer cells and the molecular basis of resistance to the drugs are not well understood. We used human gastrointestinal cancer cell lines and examined how anticancer agents induced cell killing and how the ch...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800050861
更新日期:1999-01-01 00:00:00
abstract:BACKGROUND:In vitro data indicate that the sorafenib is a moderate inhibitor of cytochrome P450 (CYP) enzymes, including CYP3A4, CYP2C19, and CYP2D6. This phase I/II study in patients with advanced melanoma evaluated the potential effect of sorafenib on the pharmacokinetics of midazolam, omeprazole, and dextromethorpha...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-011-1585-0
更新日期:2011-11-01 00:00:00
abstract::We have studied the effects of the chemotherapeutic drug cis-diamminedichloroplatinum(II) (cis-platin) on three human ovarian carcinoma cell lines - one sensitive to the drug (CH1), one with acquired resistance (CH1cisR) and one with intrinsic resistance (SKOV-3). Previous work has shown that the 50% inhibitory concen...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800050413
更新日期:1996-01-01 00:00:00
abstract::Doxifluridine (5'-deoxy-5-fluorouridine, 5'-dFUR) metabolism has been reported to be saturable and associated with a fall in clearance of the drug as the dose is increased. The aim of the present study was to determine the disposition of 5'-dFUR and 5-fluorouracil (5-FU) when 5'-dFUR was given as a 5-day infusion, wit...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00684885
更新日期:1990-01-01 00:00:00
abstract::Selective protection of the normal host tissues from the toxic effects of anticancer agents would allow the use of higher, probably more effective, doses of the drugs. It has been demonstrated that delayed high-dose uridine administration after 5-fluorouracil decreases the extent of myelosuppression and causes faster ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00685843
更新日期:1993-01-01 00:00:00
abstract::Recent advances in cDNA microarray techniques have enabled us to study the expression of many genes simultaneously. As gastric cancer remains one of the most common cancers in Japan, we studied gene expression profiles in gastric cancer by cDNA microarray analysis to determine if it would be clinically useful. We demo...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-004-0882-2
更新日期:2004-09-01 00:00:00
abstract:PURPOSE:Angiotensin (1-7) [A(1-7)] is a bioactive peptide of the renin angiotensin system that stimulates the number of bone marrow progenitors and hematopoietic recovery after myelosuppression. We evaluated the combination of A(1-7) with colony-stimulating factors, Neupogen and Epogen, on bone marrow progenitors and t...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-013-2312-9
更新日期:2013-12-01 00:00:00
abstract:PURPOSE:To assess the clinical activity and toxicity of a combination chemotherapy regimen of S-1 and cisplatin in patients with recurrent and/or metastatic head and neck squamous cell carcinoma (HNSCC) in a retrospective study. METHODS:A total of 49 patients were treated in an outpatient setting with S-1 80 mg/m(2) o...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-012-1933-8
更新日期:2012-10-01 00:00:00
abstract::RS-1541, an acyl-derivative of rhizoxin (Fig. 1), is a potent antitumor compound. This agent showed cytotoxicity in vitro on some cultured human tumor cells, although it was less potent than rhizoxin. Rhizoxin exhibited antitumor effects by inhibiting the polymerization of tubulin, whereas RS-1541 did not inhibit tubu...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00689446
更新日期:1995-01-01 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:PURPOSE:Transcatheter arterial chemoembolization (TACE) causes damage to liver function and decreases the activity of cytochrome P450 in patients with hepatocellular carcinoma (HCC). But there was no report on whether the activity of Phase II conjugating enzymes was affected in HCC patients after TACE treatment. The pu...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s00280-009-1040-7
更新日期:2010-01-01 00:00:00
abstract:PURPOSE:Curcumin, a major constituent of the spice turmeric, suppresses expression of the enzyme cyclooxygenase 2 (Cox-2) and has cancer chemopreventive properties in rodents. It possesses poor systemic availability. We explored whether formulation with phosphatidylcholine increases the oral bioavailability or affects ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-006-0355-x
更新日期:2007-07-01 00:00:00
abstract:PURPOSE:Although oral fluoropyrimidine prodrugs are increasingly being administered in preference to intravenous nucleoside analogues in cancer chemotherapy, their activation in malignant liver tissue may be insufficient. OGT 719 (1-galactopyranosyl-5-fluorouracil) is a novel nucleoside analogue, preferentially localiz...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800100332
更新日期:2001-09-01 00:00:00
abstract:PURPOSE:Our aim was to develop an optimal sampling strategy for the description of the pharmacokinetics of rubitecan and its active metabolite 9-aminocamptothecin (9-AC) for use in phase II/III studies with oral rubitecan administered in a daily times five schedule. METHODS:Concentration-time data of rubitecan and 9-A...
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/s00280-002-0516-5
更新日期:2002-12-01 00:00:00
abstract::OSI-7836 (4'-thio-beta-D-arabinofuranosylcytosine) is a novel nucleoside analog in phase I clinical development for the treatment of cancer. As with other nucleoside analogs, the proposed mechanism of action involves phosphorylation to the triphosphate form followed by incorporation into cellular DNA, leading to cell ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-004-0844-8
更新日期:2005-03-01 00:00:00
abstract:PURPOSE:The combination of an mTOR inhibitor with 5-fluorouracil-based anticancer therapy is attractive because of preclinical evidence of synergy between these drugs. According to our phase I study, the combination of capecitabine and everolimus is safe and feasible, with potential activity in pancreatic cancer patien...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-015-2730-y
更新日期:2015-06-01 00:00:00
abstract:PURPOSE:Artemisinins are now established drugs for treatment of malaria. These agents have been shown to possess impressive anti-cancer properties. We have investigated the role of artemisone (ATM), a novel derivative of artemisinin (ART) in a cancer setting both alone and in combination with established chemotherapeut...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-010-1355-4
更新日期:2011-03-01 00:00:00
abstract:PURPOSE:The intra-tumour distribution of anticancer drugs remains an important, but often under-estimated, influence on drug efficacy. Tumour acidity and the presence of efflux pumps were examined for their influence on the distribution of doxorubicin in a solid tumour model. METHODS:Anticancer drug distribution and o...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-011-1598-8
更新日期:2011-11-01 00:00:00
abstract::To enable the treatment of hepatic metastasis with higher, theoretically more effective, doses of systemically toxic anticancer drugs, an isolated liver perfusion (ILP) technique was developed in WAG/Ola rats. First, in a toxicity study the maximally tolerated dose (MTD) of mitomycin C (MMC) was determined for a 25-mi...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00689698
更新日期:1991-01-01 00:00:00
abstract:BACKGROUND:3-Aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP) is a novel small-molecule ribonucleotide reductase inhibitor. This study was designed to estimate the maximum tolerated dose (MTD) and oral bioavailability of 3-AP in patients with advanced-stage solid tumors. METHODS:Twenty patients received one dos...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-011-1779-5
更新日期:2012-03-01 00:00:00