Linked Life Data

3264392

Source:http://linkedlifedata.com/resource/pubmed/id/3264392

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-1-26
pubmed:abstractText
The autoradiographical localization of dopamine D1, D2 and cholecystokinin receptors has been investigated in rat brain 6 months following unilateral infusion of 1-methyl-4-phenyl pyridinium ion (MPP+) (10 micrograms/day for 7 days) into the nigrostriatal dopamine pathway. Treatment with 1-methyl-4-phenyl pyridinium ion produced a marked depletion of dopamine cell bodies in the substantia nigra together with greater than 95% loss of tyrosine hydroxylase immunoreactivity in the striatum. Measurement of specific [3H]spiperone binding to D2 receptors indicated a 38% increase (P less than 0.01) in the maximal binding capacity of [3H]spiperone to striatal membrane homogenates and a 13% increase (P less than 0.05) in specific [3H]spiperone binding to striatal tissue sections, verifying striatal D2 receptor denervation supersensitivity. In contrast, MPP+ lesion of the nigrostriatal tract had no effect on the autoradiographical localization of striatal D1 or cholecystokinin receptors. In addition, there was a 38% loss (P less than 0.05) of D2 receptor binding sites in the substantia nigra pars compacta, whilst D1 receptors remained unchanged. Similar changes in dopamine and cholecystokinin receptor number were found following 6-hydroxydopamine lesion of the nigrostriatal dopamine pathway. These results provide further evidence that 1-methyl-4-phenyl pyridinium ion treatment in rats produces extensive destruction of the dopaminergic nigrostriatal tract and supports the differential anatomical localization of striatal and nigral D1, D2 and cholecystokinin receptors.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0306-4522
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
129-43
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Experimental hemiparkinsonism in the rat following chronic unilateral infusion of MPP+ into the nigrostriatal dopamine pathway--II. Differential localization of dopamine and cholecystokinin receptors.
pubmed:affiliation
Parke-Davis Research Unit, Addenbrookes Hospital Site, Cambridge, U.K.
pubmed:publicationType
Journal Article