Linked Life Data

10731084

Source:http://linkedlifedata.com/resource/pubmed/id/10731084

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2000-5-25
pubmed:abstractText
An experimental rat model of Parkinson's disease was established by injecting rats directly in the striatum with the neurotoxic agent 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). In order to study the action mechanism of this neurotoxic agent, MPTP and its main metabolite 1-methyl-4-phenylpyridinium (MPP+) were also added to suspensions of pyruvate/malate-supplemented nonsynaptic brain mitochondria, and the rates of hydrogen peroxide and ATP production were measured. Intrastriatal administration of MPTP produced a pronounced decrease in striatal dopamine levels (p < 0.005) and a strong increase in 3,4-hydroxiphenylacetic acid/dopamine ratio (an indicator of dopamine catabolism; p < 0.005) in relation to controls, as evaluated by in situ microdialysis. MPTP addition to rat brain mitochondria increased hydrogen peroxide production by 90%, from 1.37+/-0.35 to 2.59+/-0.48 nanomoles of H2O2/minute . mg of protein (p < 0.01). The metabolite MPP+ produced a marked decrease on the rate of ATP production of brain mitochondria (p < 0.005). These findings support the mitochondria-oxidative stress-energy failure hypothesis of MPTP-induced brain neurotoxicity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1138-7548
pubmed:author
pubmed:issnType
Print
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
325-31
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Effect of MPTP on brain mitochondrial H2O2 and ATP production and on dopamine and DOPAC in the striatum.
pubmed:affiliation
Department of Animal Biology-II (Animal Physiology), Faculty of Biology, Complutense University of Madrid, Spain.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't