Linked Life Data

16497529

Source:http://linkedlifedata.com/resource/pubmed/id/16497529

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2006-5-16
pubmed:abstractText
Metabolic and cognitive alterations occur during hyperammonemia. Here, we report that chronic hyperammonemia also leads to increased sensitivity to LPS. Sparse-fur mice were challenged i.p. with LPS or saline control and then tested for motivation to investigate a novel juvenile over 24 h. Cytokine, ammonia, and urea concentration were quantified at the peak of sickness (2 h post injection). Chronic hyperammonemic Otc(spf-ash) mice displayed more pronounced and prolonged sickness behavior in response to LPS (P=0.02). LPS significantly (P<0.0001) increased plasma concentrations of TNFalpha, IL-1 beta, IL-6, IL-15, IL-9, IL-2, IL-1 alpha, IL-1 beta, Rantes, MIP1 alpha, MIP1 beta, MCP-1, KC, GM-CSF, G-CSF, Eotaxin, IL-13, and IL-12 in both wild type and Otc(spf-ash) mice. No significant genotype/treatment interactions (P>0.1) were detected for any cytokine. Adult Otc(spf-ash) mice (168+/-41 microM) had four times higher plasma ammonia compared to wild type mice (40 +/- 6 microM) (P=0.002). Two hours after LPS injection, plasma ammonia concentrations tended (P=0.08) to decrease in both wild type and Otc(spf-ash) mice. Learning and memory behaviors were assessed in mice under basal conditions to determine the impact of chronic hyperammonemia on cognition. Otc(spf-ash) mice performed significantly poorer in the two trial Y-maze (P=0.02) and the Morris water maze (P=0.001) than their littermate wild type controls. Taken together, these data indicate that chronic hyperammonemia results in impaired cognition and creates a state of LPS hypersensitivity.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1096-7192
pubmed:author
pubmed:issnType
Print
pubmed:volume
88
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
131-7
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Hyperammonemia increases sensitivity to LPS.
pubmed:affiliation
Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
pubmed:publicationType
Journal Article, Research Support, N.I.H., Extramural