Abstract:
:1. The absorption kinetics of orally administered strontium chloride and its reproducibility were investigated in healthy volunteers after administering strontium either under fasting conditions (study I, n = 8) or in combination with a standardized meal (study II, n = 8). Each subject received strontium orally at day 0, 14, and 28 and intravenously at day 42. The study was performed as part of a project in which a simple clinical test for measuring intestinal calcium absorption is being developed, based on the use of stable strontium as a marker. 2. Plasma strontium concentration-time curves were analysed by noncompartment analysis and a four compartment disposition model. Within a volunteer each oral curve was fitted simultaneously with the intravenous curve, by which means a two segment model for absorption was revealed. 3. Mean absolute bioavailability of strontium was 25% without a meal and 19% with a meal, whereas the intraindividual variation was 24% and 20%, respectively. 4. Various limited sampling absorption parameters were determined in order to select a potential test parameter for measuring intestinal calcium absorption using strontium as a marker. Fractional absorption at 4 h (Fc240), obtained after co-ingestion of strontium with a meal, appeared to be the best test parameter, because it represented bioavailability well (r = 0.90).
journal_name
Br J Clin Pharmacoljournal_title
British journal of clinical pharmacologyauthors
Sips AJ,van der Vijgh WJ,Barto R,Netelenbos JCdoi
10.1046/j.1365-2125.1996.33411.xsubject
Has Abstractpub_date
1996-06-01 00:00:00pages
543-9issue
6eissn
0306-5251issn
1365-2125journal_volume
41pub_type
临床试验,杂志文章abstract::WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT Reflux oesophagitis is a common clinical disorder associated with significant morbidity. Proton pump inhibitors are the current pharmacotherapy of choice, but not all treated patients achieve symptom relief. Little is known about the efficacy of mosapride, a prokinetic agent wh...
journal_title:British journal of clinical pharmacology
pub_type: 杂志文章,随机对照试验
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abstract:AIM:The aim of the study was to simplify the dosing regimen of peginterferon alfa-2a in paediatric patients with chronic hepatitis C. METHODS:A population pharmacokinetic (PK) model was developed using PK data from 14 children aged 2-8 years and 402 adults. Simulations were produced to identify a simplified dosing reg...
journal_title:British journal of clinical pharmacology
pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1111/j.1365-2125.1981.tb01327.x
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abstract:AIMS:Drug disposition in children may vary from adults due to age-related variation in drug metabolism. Microdose studies present an innovation to study pharmacokinetics (PK) in paediatrics; however, they should be used only when the PK is dose linear. We aimed to assess dose linearity of a [14 C]midazolam microdose, b...
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journal_title:British journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:British journal of clinical pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 临床试验,杂志文章
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pub_type: 临床试验,杂志文章,多中心研究
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:British journal of clinical pharmacology
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pub_type: 杂志文章,评审
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journal_title:British journal of clinical pharmacology
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