Abstract:
PURPOSE:The primary objective of this investigation was to compare the extent of brain distribution of the lactone and the carboxylate forms of camptothecin (CPT) and topotecan (TPT) in awake freely moving rats. METHODS:The plasma concentration-time profiles of the lactone and the carboxylate forms of CPT and TPT were determined simultaneously after a single i.v. administration of the lactone form of each drug. Also, the brain extracellular fluid (ECF) concentration-time profiles were characterized utilizing the microdialysis technique. This technique allowed serial sampling of the brain ECF in awake rats. RESULTS:CPT-lactone in plasma declined biexponentially with a terminal half-life of 102+/-25.2 min. During the elimination phase, the plasma concentration of CPT-carboxylate was approximately ten times the concentration of CPT-lactone. The brain ECF to plasma distribution ratio measured as the ratio of the AUC in the brain ECF to the AUC in plasma was 0.51+/-0.08 for CPT-lactone, and 0.26+/-0.21 for CPT-carboxylate. The terminal half-life for TPT-lactone was 64.0+/-9.4 min. During the elimination phase, the TPT-carboxylate concentration was higher than that of TPT-lactone but the carboxylate to lactone concentration ratio was much lower than that of CPT. The brain ECF to plasma distribution ratio was 0.38+/-0.12 for TPT-lactone, and 0.21+/-0.06 for TPT-carboxylate. CONCLUSIONS:CPT and TPT are distributed to the brain ECF most probably by passive diffusion across the blood-brain barrier. Although the brain ECF to plasma distribution ratio for CPT-lactone was higher than that for TPT-lactone, the brain ECF concentrations of TPT-lactone were significantly higher than the CPT-lactone brain ECF concentrations. The relatively high brain ECF to plasma distribution ratio of these two drugs makes them potential candidates for first-line treatment of CNS tumors.
journal_name
Cancer Chemother Pharmacoljournal_title
Cancer chemotherapy and pharmacologyauthors
El-Gizawy SA,Hedaya MAdoi
10.1007/s002800050908keywords:
subject
Has Abstractpub_date
1999-01-01 00:00:00pages
364-70issue
5eissn
0344-5704issn
1432-0843journal_volume
43pub_type
杂志文章abstract:BACKGROUND:Very little is known about the pharmacokinetics of chemotherapeutic agents in patients also being treated with continuous ambulatory peritoneal dialysis. We sought to evaluate the pharmacokinetics of cisplatin and 5-fluorouracil in plasma and peritoneal dialysate in a patient being treated for esophageal ade...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-015-2939-9
更新日期:2016-02-01 00:00:00
abstract::Forty-three previously untreated patients, all of whom had poor-prognosis small cell lung cancer and/or were greater than 65 years old, received treatment with vindesine and VP16-213. Thirteen patients had limited disease and 30 extensive disease. Response rates (CR + PR) of 86% (CR 29%) and 66% (CR 17%) were seen in ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00257124
更新日期:1984-01-01 00:00:00
abstract:PURPOSE:Flavopiridol is primarily a cyclin-dependent kinase-9 inhibitor, and we performed a dose escalation trial to determine the maximum tolerated dose and safety and generate a pharmacokinetic (PK) profile. METHODS:Patients with a diagnosis of relapsed myeloma after at least two prior treatments were included. Flav...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-013-2347-y
更新日期:2014-02-01 00:00:00
abstract:PURPOSE:Ifosfamide is becoming an important clinical anticancer drug. Meaningful pharmacology studies require quantification of its activated and active metabolites, 4-hydroxyifosfamide (HOIfos) and isophosphoramide mustard (IPM), respectively. METHODS:Current methodology for quantifying the unstable HOIfos in biologi...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800050625
更新日期:1997-01-01 00:00:00
abstract:PURPOSE:A recirculating isolated perfused rat liver model was used to investigate the hepatobiliary disposition of etoposide and the effects of cyclosporine A (CyA) on the pattern of drug disposition in the bile and uptake in the liver. METHODS:The portal vein, bile duct, and superior vena cava were cannulated in four...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-015-2719-6
更新日期:2015-05-01 00:00:00
abstract::We used a microdialysis technique to determine tissue methotrexate (MTX) levels during steady state in a rodent model. Two different approaches were employed to measure the actual extracellular MTX concentrations in muscle, liver, and kidney tissues of anesthetized Wistar rats. With the reduced-perfusion-rate techniqu...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800050403
更新日期:1996-01-01 00:00:00
abstract::The mechanism of toxicity of 3-deazaguanosine was studied in a number of human tumor cell lines by determination of the effects of various purine compounds on the growth of the cells in the presence of the drug and by studies of the effects of 3-deazaguanosine on the metabolism of radiolabeled precursors in these cell...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00257296
更新日期:1985-01-01 00:00:00
abstract:PURPOSE:In patients with epidermal growth factor receptor (EGFR)-mutated, advanced, non-small cell lung cancer (NSCLC), common gefitinib-sensitive EGFR mutations that predict a greater response to therapy include the exon 19 deletion and L858R point mutation. The objective of this study was to evaluate whether body sur...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-016-3232-2
更新日期:2017-03-01 00:00:00
abstract::In the 1981 cooperative soft-tissue sarcoma (CWS-81) study, a clear correlation between the degree of response to initial chemotherapy comprising vincristine, actinomycin D, cyclophosphamide, and Adriamycin (VACA) and the survival of patients with rhabdomyosarcoma was found. In the subsequent CWS-86 study, cyclophosph...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00253241
更新日期:1989-01-01 00:00:00
abstract::Dexniguldipine-HCl (DNIG)--a prospective clinical modulator of p170-glycoprotein (pgp170)-mediated multidrug resistance (MDR)--was evaluated in a drug-accumulation assay in MDR murine leukemia cell strain F4-6RADR expressing pgp170. The compound elevated low accumulation of either doxorubicin (DOX), daunorubicin (DNR)...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00685872
更新日期:1993-01-01 00:00:00
abstract::Severe, debilitating nausea and vomiting are seen in almost 100% of patients treated with cis-platinum. These side-effects can be so severe and prolonged as to preclude therapy in a large number of patients. Commonly used antiemetics have had only limited success in controlling cis-platinum-induced nausea and vomiting...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00258206
更新日期:1981-01-01 00:00:00
abstract::We have previously reported that multidrug (MDR)-reversal activity can be exerted by compounds in which two ring structures of certain types are connected by one alkyl bridge to a secondary or tertiary amine group. In the present investigation we studied the MDR-reversal activity of compounds in which the two ring str...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00685568
更新日期:1994-01-01 00:00:00
abstract::In early studies of the antitumor drug 1-(2-chloroethyl)-3-(4-methylcyclohexyl)-1nitrosourea (methyl-CCNU), animal models consistently predicted that the compound would be nephrotoxic in humans. Nephrotoxicity in cancer patients who had received methyl-CCNU was not confirmed until about 6 years after clinical trials b...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00257241
更新日期:1982-12-01 00:00:00
abstract:PURPOSE:Plitidepsin absorption, distribution, metabolism and excretion characteristics were investigated in a mass balance study, in which six patients received a 3-h intravenous infusion containing 7 mg 14C-plitidepsin with a maximum radioactivity of 100 µCi. METHODS:Blood samples were drawn and excreta were collecte...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-018-3637-1
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Expression of the DNA repair protein O (6)-methylguanine-DNA methyltransferase (MGMT) correlates with resistance to irinotecan in colorectal cancer cell lines. This phase I study evaluated the maximum tolerated dose (MTD) of lomeguatrib, an inactivating pseudosubstrate of MGMT, in combination with irinotecan...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00280-009-1225-0
更新日期:2010-10-01 00:00:00
abstract:BACKGROUND:Epidemiologic and preclinical data suggest isoflavones have anticancer activity in colorectal malignancy prevention and treatment. This is the first clinical trial assessing safety and tolerability of Genistein in combination with chemotherapy in metastatic colorectal cancer. METHODS:Patients who had histol...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-019-03886-3
更新日期:2019-09-01 00:00:00
abstract::Brain tumor lacks effective delivery system for treatment. Focused ultrasound (FUS) can reversibly open BBB without impacts on normal tissues. As a potential drug carrier, cationic liposomes (CLs) have the ability to passively accumulate in tumor tissues for their positive charge. In this study, FUS introduced doxorub...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-015-2926-1
更新日期:2016-02-01 00:00:00
abstract::The discovery of targetable mutations, which cause gene rearrangement, led to a major advancement in the treatment of patients with non-small cell lung cancer (NSCLC), and cancers with such mutations can be paired with drugs which specifically target them. c-ros oncogene (ROS1) positive NSCLC is one molecular subtype ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章,评审
doi:10.1007/s00280-019-03902-6
更新日期:2019-10-01 00:00:00
abstract:PURPOSE:This phase II study was performed to evaluate the efficacy and safety of cisplatin/pemetrexed combined with 15 mg/kg of bevacizumab followed by pemetrexed/bevacizumab maintenance therapy as first-line chemotherapy in advanced non-squamous non-small cell lung cancer (NSCLC) limited to epidermal growth factor rec...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-018-3573-0
更新日期:2018-06-01 00:00:00
abstract:PURPOSE:Recently, based on results of the PACIFIC trial, durvalumab after chemoradiotherapy (CRT) became the standard therapy for unresectable stage III non-small cell lung cancer (NSCLC). However, in the PACIFIC trial, patients were recruited and randomized after CRT, and certain patients were considered ineligible af...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-019-03885-4
更新日期:2019-08-01 00:00:00
abstract::A major side effect of cisplatin treatment is peripheral neuropathy. In the past few years we have provided evidence that the ACTH4-9 analogue ORG 2766 provides protection against this neuropathy in rats and man. In this study we investigated the development of a cisplatin-induced neuropathy and the protective and the...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00685621
更新日期:1993-01-01 00:00:00
abstract::Eighteen previously untreated patients with advanced unresectable or metastatic soft-tissue sarcomas (STS) and two patients with locally invasive thymoma were treated with a combination of adriamycin (ADM) 80 mg/m2 on day 1 and cis-platinum (DDP) 120 mg/m2 on day 1. The regimen was repeated at 4-weeks intervals. In ST...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00257118
更新日期:1984-01-01 00:00:00
abstract::Deoxycoformycin (dCF) is a promising new antineoplastic agent in the treatment of lymphoid malignancies, particularly hairy cell leukemia (HCL). Skin toxicity in the form of a maculopapular eruption has previously been reported but has not clearly been associated with idiosyncratic reactions. We present five cases of ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00267950
更新日期:1989-01-01 00:00:00
abstract::This phase I study was carried out to determine the maximal tolerated dose of carboplatin (Car) together with a fixed dose of etoposide (E) and to recommend the optimal dose for a phase II study. The dose of E was 100 mg/m2 given i.v. on days 1-3, and the starting dose of Car was 200 mg/m2 given i.v. on day 1. The dos...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00685718
更新日期:1990-01-01 00:00:00
abstract:PURPOSE:The study mainly aimed to determine the biological function of a novelly synthesized phenanthroimidazole derivative, named L233, and to explore its potential mechanisms. METHODS:Cell survival was examined using the MTT assays, and the DNA-damaging role of L233 was explored using the comet assay. Moreover, the ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-015-2894-5
更新日期:2016-01-01 00:00:00
abstract:INTRODUCTION:Despite the extensive clinical experience with irinotecan, significant concerns remain regarding its toxicity. In a phase I trial, we modulated irinotecan pharmacokinetics by inhibiting biliary excretion of SN-38, the active metabolite of irinotecan, using cyclosporine. The modulation appeared to decrease ...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/s00280-005-1020-5
更新日期:2005-10-01 00:00:00
abstract::Plasmatic and salivary concentrations of 5-FU were investigated in ten patients given 5-day continuous infusions of 5-fluorouracil (5-FU) (1 g/m2/day). Measurable concentrations of salivary 5-FU were scattered ranging from 6 to 100 ng/ml. Between individual 5-FU concentrations in saliva and plasma the coefficient of c...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/BF00300243
更新日期:1989-01-01 00:00:00
abstract::Lanreotide (BIM 32014), a somatulin analogue, was found to be as effective as castration in a rat prostate tumor model. Therapeutic benefit was also demonstrated in the hormone-resistant phase of this tumor model. The activity of lanreotide may be due to a reduction in the levels of growth factors such as insulin grow...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00685857
更新日期:1995-01-01 00:00:00
abstract:PURPOSE:To characterise the pharmacokinetics and metabolism in mice of 5-[N,N-bis(2-chloroethyl)amino]-2,4-dinitrobenzamide (SN 23862), the lead compound of a new class of bioreductive drugs in which a nitrogen mustard is activated by nitroreduction. Comparison is made with the corresponding aziridine derivative CB 195...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s002800000165
更新日期:2000-01-01 00:00:00
abstract::Imatinib is the treatment of choice for FIP1L1-PDGFRalpha (F/P+) positive myeloproliferative neoplasms, but little is known about optimal dose and duration of treatment to maintain complete molecular remission once achieved. We describe a case of F/P+ patients who started imatinib and reached a molecular remission, bu...
journal_title:Cancer chemotherapy and pharmacology
pub_type: 杂志文章
doi:10.1007/s00280-008-0858-8
更新日期:2009-05-01 00:00:00