Linked Life Data

7205280

Source:http://linkedlifedata.com/resource/pubmed/id/7205280

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1981-5-28
pubmed:abstractText
To assess the postmortem stability of brain 3-methoxy-4-hydroxy-phenylethyleneglycol (MHPG) and 3,4-dihydroxyphenylethyleneglycol (DHPG) levels, groups of rats and mice were killed by cervical dislocation and left at either 21 degrees or 4 degrees C for intervals of up to 24 h until removal and freezing of whole brain. Whole brain free and total MHPG and DHPG levels were determined simultaneously by gas chromatography-mass fragmentography (GC-MF). By 2 h death, statistically significant decrements occurred in rat brain free DHPG (20%), total MHPG (21%), and total DHPG (11%) at 4 degrees C, but free MHPG increased significantly (50%) compared with controls. At 21 degrees C, rat brain total MHPG increased compared with controls at 2 h (15%) but decreased at 4 h (15%) and 8 h (15%), whereas free MHPG levels were increased at these times. Although brain total and conjugated DHPG levels showed little change, free DHPG levels were reduced at all times. In mouse brain no significant changes occurred in free MHPG and DHPG by 24 h at 4 degrees C. At 21 degrees C, mouse brain DHPG levels decreased whereas MHPG concentrations increased over the 8-h period of study. These findings demonstrate the occurrence of significant postmortem time- and temperature-dependent changes in brain MHPG and DHPG concentrations and indicate caution in the interpretation of changes in these metabolites in studies employing human postmortem brain tissue.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0022-3042
pubmed:author
pubmed:issnType
Print
pubmed:volume
36
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
902-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
Postmortem stability of brain 3-methoxy-4-hydroxyphenylethyleneglycol and 3,4-dihydroxyphenylethyleneglycol in the rat and mouse.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't