Linked Life Data

1761075

Source:http://linkedlifedata.com/resource/pubmed/id/1761075

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1992-2-12
pubmed:abstractText
The influence of age on the kinetics of a standard oral dose of levodopa administered with an inhibitor of peripheral dopa decarboxylase enzymes (benserazide) has been evaluated in 40 patients with Parkinson's disease (age 34-78 y) on chronic therapy. They were divided into 2 groups, on the basis of age below (21 patients, Group A) or above (19 patients, Group B) 65 y. The area under the plasma concentration-time curve (AUC) of levodopa was significantly greater in the older group (547 versus 428 mumol.l-1.min in Group B), coupled with a reduced apparent oral clearance (8.1 versus 10.7 ml.min-1.kg-1) and a longer plasma elimination half-life (67.6 versus 54.6 min). The age of the patients was positively correlated with the AUC of levodopa (r = 0.474) and its plasma elimination half-life (r = 0.391), and was negatively correlated with clearance (r = -0.489). The findings confirm previous data on volunteers that showed a reduction in the systemic clearance of levodopa due to age, which would probably account for the finding of a greater AUC of levodopa in older patients. The observed, age-mediated differences in levodopa pharmacokinetics, albeit statistically significant, were moderate and were likely to be of only minor importance for the dosing schedule.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0031-6970
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
463-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Effect of age on the pharmacokinetics of oral levodopa in patients with Parkinson's disease.
pubmed:affiliation
Institute of Neurology, University of Bologna, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't