Linked Life Data

573289

Source:http://linkedlifedata.com/resource/pubmed/id/573289

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1979-11-29
pubmed:abstractText
Immediately following exposure to 60 inescapable shocks, Swiss-Webster mice had significantly reduced hypothalamic norepinephrine (NE). Within 24 hr NE levels returned to control values. Reexposure to as few as 10 shocks 24 hr after initial stress exposure resulted in a significant decline of hypothalamic NE. Moreover, at this interval after inescapable shock, escape performance was severely disrupted, with a large proportion of mice exhibiting numerous failures to escape shock. Increasing brain dopamine (DA) and NE by L-dopa treatment prior to inescapable shock prevented the escape deficits. Conversely, pairing five inescapable shocks with NE depletion by FLA-63, or both DA and NE depletion by alpha-methyl-p-tyrosine, disrupted escape performance 24 hr later. Residual drug effects, state dependence, or sustained amine turnover could not account for the behavioral changes observed. Data are discussed in terms of catecholamine mediation of escape performance through variations in response maintenance abilities. Furthermore, it is suggested that the long-term effects of inescapable shock may be due to sensitization effects or conditioned amine depletion.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0021-9940
pubmed:author
pubmed:issnType
Print
pubmed:volume
93
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
610-25
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Catecholamine depletion in mice upon reexposure to stress: mediation of the escape deficits produced by inescapable shock.
pubmed:publicationType
Journal Article