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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
12
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pubmed:dateCreated |
1981-5-28
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pubmed:abstractText |
A radioimmunoassay for IMPY has been developed using [3H]acetyl-IMPY and antibody induced by immunizing rabbits with succinyl-IMPY bovine serum albumin conjugates. The method was reproducible and sensitive at a dose of 0.2 microgram/ml. The cross-reactivities of IMPY and IMPY derivatives with the antibody were compared. Using this radioimmunoassay, clinical pharmacology was performed in cancer patients during phase I trials. Following 30-60-minute iv infusions of IMPY (450-1500 mg/m2/day for 5 days), the drug disappeared rapidly from plasma with an initial half-life of less than 10 minutes and second half-life of 4 hours. The half-lives are not affected by minimally abnormal hepatic function and are not dose-related. The apparent volume of distribution was approximately 125 ml/kg. The results obtained on Day 5 were essentially the same as those obtained on Day 1. IMPY was also detected in glioblastoma, brain, and temporalis muscle when the drug (500 mg/m2) was infused iv 4-5 hours before surgery. The tissue drug levels were comparable to or higher than those of plasma. The drug was also measurable in kidney and liver tissues obtained 4 hours after death in a patient who died 21 hours after iv infusion of IMPY at a dose of 1500 mg/m2/day for 3 days.
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pubmed:grant | |
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 |
0361-5960
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
64
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1253-60
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pubmed:dateRevised |
2007-11-14
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pubmed:meshHeading |
pubmed-meshheading:7471115-Antineoplastic Agents,
pubmed-meshheading:7471115-Cross Reactions,
pubmed-meshheading:7471115-Drug Administration Schedule,
pubmed-meshheading:7471115-Drug Evaluation,
pubmed-meshheading:7471115-Female,
pubmed-meshheading:7471115-Half-Life,
pubmed-meshheading:7471115-Humans,
pubmed-meshheading:7471115-Infusions, Parenteral,
pubmed-meshheading:7471115-Male,
pubmed-meshheading:7471115-Neoplasm Metastasis,
pubmed-meshheading:7471115-Neoplasms,
pubmed-meshheading:7471115-Pyrazoles,
pubmed-meshheading:7471115-Radioimmunoassay,
pubmed-meshheading:7471115-Reference Standards
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pubmed:year |
1980
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pubmed:articleTitle |
Clinical pharmacology of IMPY by radioimmunoassay.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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