Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-5-17
pubmed:abstractText
The effect of chronic intake of the anticholinergic drug orphenadrine on the bioavailability of levodopa was studied in six patients with Parkinson's disease. Plasma levodopa profiles and corresponding motor response to a standard dose of levodopa plus an inhibitor of peripheral L-aromatic aminoacid decarboxylase (benserazide) were followed, over a 5-h period, on two different sessions, with and without anticholinergic cotherapy. Six control patients were also included in the study for assessment of intrasubject variability in levodopa absorption under identical conditions. A considerable delay in levodopa absorption was found in one patient, and decreased absorption in an additional two patients while on anticholinergic. Patients' clinical performance corresponded well to plasma levodopa profiles. A significant impairment of basal clinical state was observed in two cases on anticholinergic withdrawal, probably as a result of pharmacodynamic interactions. Our observations suggest that chronic anticholinergic intake may contribute to a less predictable pattern of levodopa absorption and related therapeutic response in some subjects.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0362-5664
pubmed:author
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
148-55
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Combined levodopa-anticholinergic therapy in the treatment of Parkinson's disease. Effect on levodopa bioavailability.
pubmed:affiliation
Institute of Neurology, University of Bologna, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't