Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1987-7-10
pubmed:abstractText
The ability of astrocytes to convert 1-methyl-4-phenyl-1,2,3,6- tetrahydropyridine (MPTP) to its toxic metabolite 1-methyl-4-phenylpyridinium ion (MPP+) was directly tested. Cultured astrocytes rapidly converted MPTP (25 micrograms/ml) to MPP+; after 6 h MPP+ concentrations reached 1.5 micrograms/ml, within the toxic range for neurons. MPTP (above 10 micrograms/ml) reduced glial density after 5 days of exposure. This toxic effect was blocked by pargyline, a monoamine oxidase inhibitor; pargyline also reduced the conversion of MPTP to MPP+ by 85%. When neurons were added to astrocyte cultures, MPTP conversion to MPP+ was not enhanced. Astrocytes appear critical in converting MPTP to MPP+, and are damaged by chronic exposure to MPTP.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0304-3940
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
75
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
323-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Astrocytes convert the parkinsonism inducing neurotoxin, MPTP, to its active metabolite, MPP+.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't