Linked Life Data

8179792

Source:http://linkedlifedata.com/resource/pubmed/id/8179792

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1994-6-15
pubmed:abstractText
To investigate the dopaminergic correlates of the aging-related motor and cognitive deficits, the dopamine metabolite homovanillic acid (HVA) in plasma was studied in a community-dwelling elderly cohort (n = 141). The results showed that hand-signature time (HST), a measure of bradykinesia, correlated negatively with plasma HVA (r = -0.24, p < .007). Similarities task performance showed a trend-level positive correlation with plasma HVA (r = 0.15, p = .08). Because plasma HVA is derived from several sources including central dopaminergic neurons and both central and peripheral noradrenergic neurons, the noradrenergic metabolite 3-methoxy-4-hydroxyphenylglycol (MHPG) in plasma was also measured to indirectly estimate the relationships, with HVA originating from noradrenergic metabolism. Plasma MHPG significantly correlated with similarities scores (r = 0.34, p < .001) but not with HST. The results suggested that the association of HVA with prolonged HST may be related to central dopamine metabolism, but its association with similarities scores may be due to noradrenergic metabolism. The results raise the possibility that prolonged HST may be an indicator of preclinical brain dopamine loss in the elderly.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0893-133X
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
29-35
pubmed:dateRevised
2011-5-18
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Plasma homovanillic acid and performance on motor and cognitive tasks in community-dwelling elderly: MacArthur studies of successful aging.
pubmed:affiliation
Psychiatry Service, Bronx VA Medical Center, New York 10468.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't