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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1994-5-6
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pubmed:abstractText |
The disposition of growth hormone releasing peptide (SK&F 110679) has been studied in male Sprague-Dawley rats and in male and female beagle dogs following intravenous (iv) and subcutaneous (sc) administration. Mass balance/excretion of [3H]SK&F 110679 was assessed in bile duct-exteriorized rats from which radiolabeled biliary and urinary excreta were quantified and characterized. [3H]SK&F 110679 was excreted, predominantly in the bile, and to a large extent as intact peptide following either iv or sc administration. Although the extent of biliary excretion of radiolabel was similar following iv or sc administration (60-70% of the dose), the rate was significantly higher following iv administration. Using a specific plasma HPLC/fluorescence assay, the iv and sc pharmacokinetics of SK&F 110679 were investigated in both species. Following iv bolus administration, biphasic plasma concentration-time profiles were observed, and the initial phases were characterized by 2-4 min half-lives. Systemic plasma clearance was 27 ml/min/kg in the rat (0.4 mg/kg dose) and 17 ml/min/kg in the dog (0.5 mg/kg dose). High sc bioavailability (89-103%) was observed in both species; an apparent terminal half-life of 1 hr likely reflected slow absorption from the injection site.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0090-9556
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
22
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
90-8
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:8149896-Animals,
pubmed-meshheading:8149896-Bile,
pubmed-meshheading:8149896-Dogs,
pubmed-meshheading:8149896-Female,
pubmed-meshheading:8149896-Half-Life,
pubmed-meshheading:8149896-Injections, Intradermal,
pubmed-meshheading:8149896-Injections, Intravenous,
pubmed-meshheading:8149896-Male,
pubmed-meshheading:8149896-Oligopeptides,
pubmed-meshheading:8149896-Rats,
pubmed-meshheading:8149896-Rats, Sprague-Dawley,
pubmed-meshheading:8149896-Time Factors
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pubmed:articleTitle |
Disposition of growth hormone-releasing peptide (SK&F 110679) in rat and dog following intravenous or subcutaneous administration.
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pubmed:affiliation |
SmithKline Beecham Pharmaceuticals, Drug Metabolism and Pharmacokinetics, King of Prussia, PA 19406.
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pubmed:publicationType |
Journal Article,
Clinical Trial
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