Abstract：
OBJECTIVES:Caffeine-containing beverages are generally consumed by Nigerians suffering from malaria and kwashiorkor in the belief that caffeine aids early recovery from these illnesses, which are common in the tropics. However, there are no studies on the influence of these diseases on the absorption and pharmacokinetics of caffeine in Africans. MATERIALS AND METHODS:A single oral dose of caffeine was given to five healthy children and to five and seven children suffering from malaria and kwashiorkor, respectively. Caffeine and its dimethylxanthine metabolites were measured in plasma using high-performance liquid chromatography. RESULTS:The maximum plasma concentration (Cmax) of caffeine and the time of Cmax were similar (P > 0.05) in the three groups. However, the elimination half-life of caffeine was significantly longer in children with malaria (9.2 +/- 3.5 h) (P < 0.01) and kwashiorkor (13.1 +/- 7.9 h) (P < 0.05) than in the healthy controls (3.7 +/- 1.8 h). The total plasma oral clearance of caffeine of 4.4 +/- 1.9 ml/min/kg in healthy children was significantly higher (P < 0.01) than in those with kwashiorkor (2.0 +/- 0.9 ml/min/kg) and malaria (1.6 +/- 1.0 ml/min/ kg) (P < 0.05). Paraxanthine was the principal metabolite in all the three groups with Cmax significantly higher in healthy children (1.3 +/- 0.3 microg/ml) than in children with malaria (0.8 +/- 0.4 microg/ml) (P < 0.05) and kwashiorkor (0.3 +/- 0.1 microg/ml) (P < 0.0001). CYP1A2 activity, measured by the plasma ratios of paraxanthine: caffeine, was significantly lower in kwashiorkor and malaria. CONCLUSIONS:This study showed that the plasma kinetics of caffeine are significantly altered in malaria and kwashiorkor, and CYP1A2 activity was lower in these two disease groups.
journal_name
Eur J Clin Pharmacoljournal_title
European journal of clinical pharmacologyauthors
Akinyinka OO,Sowunmi A,Honeywell R,Renwick AGdoi
10.1007/s002280050734subject
Has Abstractpub_date
2000-05-01 00:00:00pages
153-8issue
2eissn
0031-6970issn
1432-1041journal_volume
56pub_type
临床试验,杂志文章abstract：:In 8 social drinkers, the effect of a single dose of Liv.52 or placebo on ethanol absorption has been studied after ingestion of 30 ml whisky in 5 min. The t1/2 absorption with Liv.52 was 3.62 min, significantly less than after placebo, 6.29 min. The peak concentration after Liv.52 (49.9 mg.100 ml-1) was significantly...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章
doi：10.1007/BF00280076
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVE:The analgesic efficacy of intravenous doses of acetaminophen (paracetamol) 0.5 g, 1 g and 2 g (administered as propacetamol) was assessed in 11 healthy subjects in a randomised, double-blind, placebo-controlled crossover study. The antinociceptive effect was assessed over 8 h by measurement of the nociceptive...
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/s002280050386
更新日期：1998-01-01 00:00:00
abstract：:Recently, interactions of herbal medicines with synthetic drugs came into focus of particular interest. In the past 3 years, more than 50 papers were published regarding interactions between St. John's wort (Hypericum perforatum L.; SJW) and prescription drugs. Co-medication with SJW resulted in decreased plasma conce...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,评审
doi：10.1007/s00228-006-0096-0
更新日期：2006-03-01 00:00:00
abstract：OBJECTIVE:We sought to quantify the influence of the CYP3A inhibitor erythromycin on the pharmacokinetics of everolimus, a CYP3A substrate. METHODS:This was a two-period, single-sequence, crossover study in 16 healthy subjects. In period 1, subjects received the reference treatment of a single 2-mg dose of everolimus....
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章
doi：10.1007/s00228-004-0866-5
更新日期：2005-03-01 00:00:00
abstract：PURPOSE:The purpose of this study is to determine the impacts of CYP3A5 polymorphism on tacrolimus concentration and the proportion of patients within a target therapeutic range during the first week after transplantation together with the 3-month acute rejection rate in kidney transplant patients receiving a minimized...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-015-1990-0
更新日期：2016-03-01 00:00:00
abstract：:Amitriptyline has clinically important interactions with ethanol. Five healthy volunteers received 25 mg of amitriptyline orally, preceded by one hour and followed for eight hours by oral ethanol (or juice), dosed to achieve and maintain blood ethanol concentrations of 800 mg/l. In the presence of ethanol, amitriptyli...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF01037943
更新日期：1983-01-01 00:00:00
abstract：:Drug binding in the interstitial fluid as well as in the plasma must be taken into account when considering the pharmacokinetics of drugs which are highly bound to plasma proteins and have a relatively small apparent volume of distribution (V). The half-life and apparent volume of distribution of such a drug can be af...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00609592
更新日期：1981-01-01 00:00:00
abstract：OBJECTIVE:To study, in a large cohort, the association between the use of anti-asthmatic drugs during pregnancy and pregnancy complications. METHODS:Using the Swedish Medical Birth Register, we identified 24,369 women who reported the use of anti-asthmatic drugs in early pregnancy and 7778 women who were prescribed su...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-006-0257-1
更新日期：2007-04-01 00:00:00
abstract：:The pharmacokinetics of cefoxitin was studied in 6 healthy volunteers and in 5 patients with a pleural effusion after administration of a single dose of 30 mg/kg i.v. infusion. The serum and pleural fluid concentrations of cefoxitin were determined microbiologically. The elimination half-life of the antibiotic from pl...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00548772
更新日期：1984-01-01 00:00:00
abstract：:The plasma kinetics of timolol administered orally and intravenously to 5 male subjects were examined. Bioavailability was reduced by 25% when the drug was taken orally. Mean plasma half-life after oral dosing was 4.86 h, and after intravenous administration it was 4.56 h; the difference was not significant. The volum...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00716385
更新日期：1978-12-18 00:00:00
abstract：:Theophylline disposition after an intravenous test dose of aminophylline was determined in 83 subjects: 7 patients with and 58 without congestive heart failure (CHF), and 18 healthy controls. Based on the pharmacokinetics of theophylline in the individual, the oral dosage of aminophylline was scheduled to attain stead...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00545964
更新日期：1982-01-01 00:00:00
abstract：:The antihypertensive effect of a new vasodilator with betablocking properties (SK & F 92657) was investigated in 10 patients with mild to moderate essential hypertension. After a mean treatment period of 26,5 weeks (6,5-49 weeks) blood pressure was significantly reduced, from 168 +/- 22/106 +/- 6 mmHg to 144 +/- 19/94...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00605990
更新日期：1982-01-01 00:00:00
abstract：:The influence of bezafibrate treatment on hepatic cholesterol metabolism was studied in rats and in humans. The activities of the three key enzymes involved in cholesterol metabolism [3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase, cholesterol 7 alpha-hydroxylase, and acyl-coenzyme A: cholesterol acyltransf...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,评审
doi：10.1007/BF01409405
更新日期：1991-01-01 00:00:00
abstract：:The effects of guar gum (GG) and microcrystalline cellulose (MC) on metabolic control and serum lipids were compared in a double-blind, cross-over trial in 18 poorly controlled Type 2 diabetic patients. There were two 12 week treatment periods separated by a 4 week wash-out period. A significant reduction in fasting B...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章
doi：10.1007/BF00542449
更新日期：1988-01-01 00:00:00
abstract：:17 patients with severe digoxin intoxication were successfully treated with 320 to 480 mg Fab fragments of digoxin-specific IgG from sheep. The infusion period ranged between 0.5 and 7 h. Serum and urine concentrations of digoxin bound to Fab fragments, and in 11 cases unbound Fab fragments in serum, were determined d...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00542410
更新日期：1986-01-01 00:00:00
abstract：BACKGROUND:Cytochrome P450 2C9 (CYP2C9) allelic variant carriers have been shown to experience hyper-responsiveness to small doses of oral anticoagulants (OAs) (warfarin or acenocoumarol) and a higher bleeding rate. OBJECTIVES:To determine the relative frequencies of different risk factors for OA overdose including di...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-002-0538-2
更新日期：2003-03-01 00:00:00
abstract：OBJECTIVE:Nafamostat mesilate, a potent protease inhibitor, is widely used for the treatment of pancreatitis, disseminated intravascular coagulation and as an anticoagulant in haemodialysis. However, hyperkalaemia associated with nafamostat mesilate has been reported. It is thought to be due to decreased urinary potass...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s002280050176
更新日期：1996-01-01 00:00:00
abstract：OBJECTIVE:This study aimed to estimate the total healthcare costs associated with elderly chronic pain (CP) patients, define cost-related factors in this population, and examine cost evolution over two years. METHOD:This is an ancillary study from the CP S.AGE subcohort, including non-institutionalized patients aged o...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-015-1871-6
更新日期：2015-08-01 00:00:00
abstract：PURPOSE:Serotonin receptor 1B (HTR1B) is involved in the regulation of the serotonin system, playing different roles in specific areas of the brain. We review the characteristics of the gene coding for HTR1B, its product and the functional role of HTR1B in the neural networks involved in motivation and memory; the cent...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,评审
doi：10.1007/s00228-009-0724-6
更新日期：2010-01-01 00:00:00
abstract：:The efficacy and safety of almitrine bismesylate, a new respiratory stimulant, in patients with the hypoxaemic form of chronic respiratory insufficiency caused by chronic bronchitis and emphysema has been assessed. The multicentre trial of 12 weeks duration was double-blind and placebo controlled, with individual and ...
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/BF00315025
更新日期：1990-01-01 00:00:00
abstract：:Information must be collected, evaluated and utilized to support every qualified activity. Medicine, with a written scientific tradition stretching back more than 2,000 years, is no exception. Here, we discuss a number of important items associated with the establishment of a drug information centre run by clinical ph...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/s00228-013-1484-x
更新日期：2013-05-01 00:00:00
abstract：PURPOSE:Ilaprazole, the latest proton pump inhibitor, can be used with clarithromycin and amoxicillin as a triple therapy regimen for eradicating Helicobacter pylori. The aim of this study was to evaluate pharmacokinetic drug interactions and safety profiles after coadministration of clarithromycin, amoxicillin, and il...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,随机对照试验
doi：10.1007/s00228-018-2489-2
更新日期：2018-09-01 00:00:00
abstract：:The efficacy of bopindolol and atenolol in the treatment of patients with chronic stable angina pectoris have been compared in a double blind, randomized study. Both bopindolol 1 mg and atenolol 100 mg for 6 weeks increased mean exercise time (25% and 22%, respectively, compared to placebo), time to angina (27% and 25...
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/BF00314809
更新日期：1990-01-01 00:00:00
abstract：:The interaction between the main components of the new glycopeptide antibiotic teicoplanin, A2-2, A2-3, A2-4, A2-5 and A3-1, and human serum albumin has been studied in vitro by equilibrium dialysis (pH 7.4, 37 degrees C). From Scatchard analysis of the data, the calculated association constants (Ka) were: A2-2, 2.47 ...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00544566
更新日期：1987-01-01 00:00:00
abstract：:The pharmacokinetics of ethanol in plasma and whole blood have been investigated and the results used to estimate the volume of total body water (TBW) by means of the dilution principle. Fifteen men (mean age 62 y) were given 0.6 g ethanol/kg body weight as an intravenous infusion over 1 h. The peak concentration of e...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00280133
更新日期：1992-01-01 00:00:00
abstract：:In a double-blind, placebo-controlled cross-over study, the plasma atrial natriuretic peptide (ANP) levels of nine young and ten elderly hypertensive patients were compared after placebo and after treatment with 120 mg verapamil given three times daily over 4 weeks. During placebo, plasma ANP levels proved to be highe...
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/BF01409206
更新日期：1990-01-01 00:00:00
abstract：PURPOSE:People with dementia may have indications for aspirin prescription and clinicians are asked to balance the potential risks against benefits. This review examines the evidence for the risk and benefit of long-term aspirin use in people with dementia aged over 65 years, including randomised controlled trials and ...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章,评审
doi：10.1007/s00228-021-03089-x
更新日期：2021-01-22 00:00:00
abstract：:We have studied the kinetics of a single oral dose of mefloquine (750 mg) in 12 Thai patients with falciparum malaria and have compared the results with those of a previous study in 12 healthy Thai volunteers. All the patients responded to treatment with a mean parasite clearance time of 66.6 h and a mean fever cleara...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00637607
更新日期：1988-01-01 00:00:00
abstract：:In a model of mental stress the influence of nifedipine and hydrochlorothiazide on stress-induced changes in blood pressure, heart rate, and plasma catecholamines was studied in normal persons. The drugs were used to investigate whether substances with antihypertensive but no particular sympatholytic properties were c...
journal_title：European journal of clinical pharmacology
pub_type： 杂志文章
doi：10.1007/BF00544008
更新日期：1983-01-01 00:00:00
abstract：OBJECTIVES:This study was conducted to examine a complex effect of ciprofibrate therapy in patients with atherogenic lipoprotein phenotype. METHODS:Effects of ciprofibrate were studied on HDL subpopulations, HDL ability to esterify cholesterol (FER(HDL)), susceptibility of LDL to oxidation as well as on in vivo oxidat...
journal_title：European journal of clinical pharmacology
pub_type： 临床试验,杂志文章
doi：10.1007/s002280050537
更新日期：1998-11-01 00:00:00
