Linked Life Data

3680581

Source:http://linkedlifedata.com/resource/pubmed/id/3680581

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1988-1-11
pubmed:abstractText
The pharmacokinetics of cyclosporine was studied in five healthy male volunteers following intravenous administration. The subjects received 2.1 mg/kg of cyclosporine as a two-hour intravenous infusion. Blood samples were collected over the subsequent 48 hours. Cyclosporine was extracted from whole blood and analyzed by high-performance liquid chromatography (HPLC) and radioimmunoassay (RIA). Following the intravenous infusion of cyclosporine, the drug exhibited multicompartmental behavior. The harmonic mean distribution half-life based on HPLC data was 0.45 hours, and the harmonic mean terminal disposition half-life was 6.2 hours. The clearance of cyclosporine based on HPLC cyclosporine concentrations was 3.9 mL/min/kg, and the volume of distribution at steady state of cyclosporine was 1.23 L/kg. Cyclosporine has a shorter half-life, lower clearance, and smaller Vss in healthy persons as compared to patient populations. The differences observed in the pharmacokinetics of cyclosporine in healthy persons as compared to patient populations may be due to differences in hematocrit, lipoprotein profiles, and/or concurrent drug therapy between the groups. Cyclosporine concentrations determined by RIA were consistently higher than those determined by HPLC, resulting in a significantly higher area under the blood concentration versus time curve and lower clearance rate for cyclosporine. We conclude that: (1) kinetic parameter estimates for cyclosporine are different in healthy individuals as compared with organ-transplant recipients, and (2) the kinetic parameters for cyclosporine are different, depending on the assay technique used.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0091-2700
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
243-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Cyclosporine kinetics in healthy volunteers.
pubmed:affiliation
Department of Pharmacy Practice, University of Pittsburgh, School of Pharmacy, Pennsylvania.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't