Abstract：
:The bioavailability of four preparations containing dihydrotachysterol (DHT2) was tested in two separate trials with administration of single, oral doses of 1 mg per individual. The relative bioavailability of corresponding preparations (capsules vs capsules and oral solution vs oral solution) was tested in a randomised, cross-over pattern within the same group of volunteers. Two different groups of 24 healthy volunteers took part in each trial. Solution and capsule bioavailability was also compared inter-individually. A new sensitive HPLC-method (quantification limit 0.5 ng.ml-1) was used for the measurement of DHT2 concentration in serum. Three of the preparations tested had a similar bioavailability (mean AUC values of 195.5-223 ng.h.ml-1); the bioavailability of the fourth preparation (A.T.10 oral solution) was considerably lower (mean AUC value 111.5 ng.h.ml-1). The present dosage recommendations of all four preparations are identical. A new dosage recommendation is thus required for the oral solution with low bioavailability (A.T.10).
journal_name
Eur J Clin Pharmacoljournal_title
European journal of clinical pharmacologyauthors
Koytchev R,Alken RG,Vagaday M,Kunter U,Kirkov Vdoi
10.1007/BF00193484subject
Has Abstractpub_date
1994-01-01 00:00:00pages
81-4issue
1eissn
0031-6970issn
1432-1041journal_volume
47pub_type
临床试验,杂志文章,随机对照试验abstract：:The bronchodilator effect and side-effects of a single oral dose of enprofylline were compared with the corresponding actions of a therapeutic dose of theophylline in 20 asthmatic patients, in a randomized cross-over clinical trial. Enprofylline 4 mg/kg and theophylline 8 mg/kg produced mean maximum plasma levels of 4...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF00541929
更新日期：1984-01-01 00:00:00
abstract：PURPOSE:The study aims to compare the efficacy and safety of capecitabine plus oxaliplatin (XELOX) with 5-fluorouracil/leucovorin plus oxaliplatin (FOLFOXs) in patients with advanced gastric cancer. METHODS:Five databases were searched up to June 2014, without language restrictions. The outcomes included overall respo...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,meta分析
doi：10.1007/s00228-015-1828-9
更新日期：2015-05-01 00:00:00
abstract：PURPOSE:To quantify pharmacokinetic (PK) and pharmacodynamic (PD) relationships of various classes of GABAA agonists in healthy volunteers, in order to investigate the sensitivity of the biomarker responses due to differing GABAA-subtype selectivity and to explore the correlation between biomarker responses and side ef...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,meta分析
doi：10.1007/s00228-015-1918-8
更新日期：2015-10-01 00:00:00
abstract：PURPOSE:Higher drug concentrations in complex clinical scenarios in which multiple factors such as drug-drug interactions (DDIs) and comorbidities are simultaneously present are not necessarily rationalized in prospective clinical studies. Physiologically based pharmacokinetic (PBPK) modeling and simulation of the anti...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-020-02861-9
更新日期：2020-06-01 00:00:00
abstract：:Accidental intoxication with tramadol of a 6-month old infant was followed by severe cerebral depression. Studies on serum, cerebrospinal fluid, and urine drug levels indicated complete penetration of the blood-cerebrospinal fluid barrier by tramadol. ...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00543498
更新日期：1984-01-01 00:00:00
abstract：:The use of bioelectrical impedance (BI) analysis as a non-invasive approach for individualizing gentamicin therapy in newborn infants has been investigated in a two phase study. In Phase I, 1/impedance and length were identified as statistically significant predictors of the distribution volume of gentamicin (Adj R2 =...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00271367
更新日期：1993-01-01 00:00:00
abstract：:The pharmacokinetics of isosorbide-5-mononitrate (IS-5-MN) has been studied in two groups of healthy volunteers after oral (n = 20) and intravenous (n = 11) administration of 20 mg, which had previously been proved to be as effective as 20 mg sustained-release isosorbide dinitrate (ISDN). IS-5-MN in serum was measured...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00618777
更新日期：1981-01-01 00:00:00
abstract：:The effects of metolazone on the protein binding of glibenclamide were studied. It was found that increasing metolazone concentrations up to 100 ng/ml had no significant effect on the protein binding of glibenclamide studied at 10 micrograms/ml. Metolazone is unlikely to cause a clinically significant increase in the ...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00314813
更新日期：1990-01-01 00:00:00
abstract：PURPOSE:Ultraviolet radiation exposure is the most important exogenous risk factor for cutaneous malignancies. It is possible that phototoxic drugs promote the development of cutaneous melanoma (CM) by intensifying the effect of ultraviolet light on the skin. We investigated the association between the use of common sy...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-013-1476-x
更新日期：2013-07-01 00:00:00
abstract：:Blood levels of racemic chloroquine and its main metabolites desethylchloroquine and bisdesethylchloroquine were measured in 29 patients treated chronically for rheumatoid arthritis. In six patients, the concentrations were followed during a one day dosage interval. There was considerable intersubject variability in t...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00280130
更新日期：1992-01-01 00:00:00
abstract：AIM:The aim of this study was to quantify the reasons and opinions of patients who reported adverse drug reactions (ADRs) in the Netherlands to a pharmacovigilance centre. METHOD:A web-based questionnaire was sent to 1370 patients who had previously reported an ADR to a pharmacovigilance centre. The data were analysed...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-010-0865-7
更新日期：2010-11-01 00:00:00
abstract：OBJECTIVE:The aim of the present study was to develop a real-time reverse-transcription polymerase chain reaction (RT-PCR) methodology for the quantification of thiopurine methyltransferase (TPMT) gene expression in whole blood and compare it with the TPMT enzyme activity measured in red blood cells. METHODS:TPMT gene...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-003-0617-z
更新日期：2003-07-01 00:00:00
abstract：:The pharmacokinetics of piretanide, a new loop diuretic, were studied in seven patients with severe liver disease before and after resolution of ascites. The time to maximum concentration was significantly prolonged by the presence of ascites. Tmax after relief of ascites was similar to that seen for normal volunteers...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF00544070
更新日期：1985-01-01 00:00:00
abstract：:The antihypertensive effects of urapidil and clonidine have been studied in a double-blind cross-over trial in 11 hypertensive outpatients with mild to moderate hypertension, at rest and during isometric exercise. Urapidil 30 mg b.i.d. significantly decreased the standing diastolic blood pressure (p less than 0.05) an...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF00635705
更新日期：1985-01-01 00:00:00
abstract：:Nine healthy adults were administered indocyanine green (ICG) 0.5 mg.kg-1 IV alone and after the administration of the following oral drugs: nifedipine 10 mg, propranolol 80 mg, propranolol 80 mg and nifedipine 10 mg, and propranolol 80 mg after nifedipine 10 mg every 8 h for 5 days. Heart rate and mean arterial blood...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00679780
更新日期：1989-01-01 00:00:00
abstract：OBJECTIVES:To compare plasma levodopa concentrations after repeated doses of levodopa/carbidopa/entacapone (LCE) and levodopa/carbidopa (LC). METHODS:Open-label, randomized, two-period, active-controlled, cross-over study with four dosing regimens: groups I and II (healthy volunteers and Parkinson's disease patients) ...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00228-009-0622-y
更新日期：2009-05-01 00:00:00
abstract：OBJECTIVE:Pharmacokinetic parameters are important for dose adjustment of aminoglycosides, but they are highly variable in neonates. In this study the pharmacokinetics of a netilmicin loading dose was investigated on the first postnatal day in preterm neonates with very low gestational age (GA). METHODS:In an open pro...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-006-0153-8
更新日期：2006-09-01 00:00:00
abstract：:In a double blind, randomised trial, the effects of 1 g aspirin and 1 g paracetamol were compared on bleeding time and platelet aggregation in 40 volunteers (20 females). Also investigated was the relationship between plasma aspirin esterase activity and both bleeding time and platelet aggregation after aspirin. Follo...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF00543486
更新日期：1984-01-01 00:00:00
abstract：:Acute studies of clonidine suggest that it lowers blood pressure by central enhancement of baroreflex sensitivity coupled with diminished evidence of sympathetic outflow, but longterm clonidine data have not been conclusive. We examined effects of one month of low dose clonidine (0.4 +/- 0.15 mg/day) alone in 13 essen...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF00558378
更新日期：1981-01-01 00:00:00
abstract：PURPOSE:The purpose of this study is to investigate whether there is an association between anticholinergic burden and mortality or rehospitalization in older adults discharged from hospital. METHODS:Prospective multicenter cohort study carried out with patients aged 65 and older discharged from seven acute care hospi...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,多中心研究
doi：10.1007/s00228-017-2312-5
更新日期：2017-11-01 00:00:00
abstract：:In a cross-over pharmacokinetic study in 8 healthy volunteers a retard formulation containing pindolol 30 mg was compared with the normal 15 mg. pindolol tablet. The pindolol 30 mg retard tablet led to the same maximum plasma level as a single dose of the normal pindolol tablet. A plasma concentration higher than half...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00542037
更新日期：1982-01-01 00:00:00
abstract：:Deuterated methadone (M-d3) and GCMS were used to study the pharmacokinetics of methadone (M) during the induction stage of methadone maintenance treatment (MMT). A pulse dose of M-d3 was given on Days 1 and 25 of two dosage regimens, one with a continuous 30 mg dose (n = 6), and the other with 30 mg for 10 days, foll...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00548404
更新日期：1982-01-01 00:00:00
abstract：:The relation between plasma concentration of theophylline and number of apnea preterm infants was studied in six patients. The apnea frequency was monitored after cessation of theophylline treatment and plotted against the log plasma concentration of theophylline. It was calculated that at an average plasma concentrat...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00561480
更新日期：1980-07-01 00:00:00
abstract：OBJECTIVE:We investigated the effects of treatment with Saint John's wort (hypericum perforatum) extract on the urinary excretion of D-glucaric acid, 6beta-hydroxycortisol, and free cortisol in order to assess the effect of this extract on the activity of hepatic xenobiotic metabolizing enzymes. METHODS:Forty-eight he...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章
doi：10.1007/s00228-002-0527-5
更新日期：2002-12-01 00:00:00
abstract：OBJECTIVE:In a double blind, randomised, placebo-controlled, cross-over study 12 healthy male volunteers were allocated to receive felodipine + placebo, cyclosporine + placebo, and felodipine + cyclosporine in order to investigate the interaction between the calcium channel blocker felodipine and cyclosporine as it aff...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章
doi：10.1007/s002280050093
更新日期：1996-01-01 00:00:00
abstract：:Dopamine is frequently used in critically ill newborn infants for treatment of shock and cardiac failure, but its pharmacokinetics has not been evaluated using a specific analytical method. Steady-state arterial plasma concentrations of dopamine were measured in 11 seriously ill infants receiving dopamine infusion, 5-...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00279976
更新日期：1991-01-01 00:00:00
abstract：:The binding of ibuprofen to human serum albumin, normal plasma and plasma obtained from rheumatoid arthritic patients was studied using the method of ultracentrifugation. It was found that ibuprofen is more strongly bound to normal plasma than to human serum albumin although this result is probably explained by fatty ...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00542526
更新日期：1983-01-01 00:00:00
abstract：OBJECTIVE:More than 11% of the Caucasian population are heterozygous or homozygous carriers of thiopurine S-methyltransferase (TPMT) mutants and are at risk for toxic side effects when treated with thiopurine drugs. Therefore, screening for TPMT polymorphisms in a patient prior to prescribing these agents is recommende...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-004-0728-1
更新日期：2004-03-01 00:00:00
abstract：:Naftopidil exerts its antihypertensive action via alpha 1-adrenoceptor blockage and Ca2+ antagonism in vascular smooth muscle. Since the chemically similar 1-(1-naphthyl) piperazine is known to be a 5-hydroxytryptamine2 receptor antagonist, the 5-hydroxytryptamine (5-HT) antagonistic properties of naftopidil were test...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/BF00192561
更新日期：1994-01-01 00:00:00
abstract：PURPOSE:Pre-clinical experiments have shown that almorexant, a dual orexin receptor antagonist, is able to inhibit cytochrome P450 3A4 (CYP3A4). Therefore, a study was conducted to investigate the effects of multiple-dose almorexant on the pharmacokinetics of midazolam and simvastatin, two CYP3A4 model substrates. MET...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00228-012-1403-6
更新日期：2013-03-01 00:00:00
