RGD Reference Report - Microsomal prostaglandin E synthase-1 is a critical factor of stroke-reperfusion injury. - Rat Genome Database

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Microsomal prostaglandin E synthase-1 is a critical factor of stroke-reperfusion injury.

Authors: Ikeda-Matsuo, Y  Ota, A  Fukada, T  Uematsu, S  Akira, S  Sasaki, Y 
Citation: Ikeda-Matsuo Y, etal., Proc Natl Acad Sci U S A. 2006 Aug 1;103(31):11790-5. Epub 2006 Jul 24.
RGD ID: 2300094
Pubmed: PMID:16864802   (View Abstract at PubMed)
PMCID: PMC1518807   (View Article at PubMed Central)
DOI: DOI:10.1073/pnas.0604400103   (Journal Full-text)

Although augmented prostaglandin E(2) (PGE(2)) synthesis and accumulation have been demonstrated in the lesion sites of rodent transient focal ischemia models, the role of PGE(2) in neuronal survival has been controversial, showing both protective and toxic effects. Here we demonstrate the induction of microsomal PGE synthase 1 (mPGES-1), an inducible terminal enzyme for PGE(2) synthesis, in neurons, microglia, and endothelial cells in the cerebral cortex after transient focal ischemia. In mPGES-1 knockout (KO) mice, in which the postischemic PGE(2) production in the cortex was completely absent, the infarction, edema, apoptotic cell death, and caspase-3 activation in the cortex after ischemia were all reduced compared with those in wild-type (WT) mice. Furthermore, the behavioral neurological dysfunctions observed after ischemia in WT mice were significantly ameliorated in KO mice. The ameliorated symptoms observed in KO mice after ischemia were reversed to almost the same severity as WT mice by intracerebroventricular injection of PGE(2) into KO mice. Our observations suggest that mPGES-1 may be a critical determinant of postischemic neurological dysfunctions and a valuable therapeutic target for treatment of human stroke.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Reperfusion Injury  ISOPtges (Mus musculus)2300094; 2300094 RGD 
Reperfusion Injury  IEP 2300094 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Ptges  (prostaglandin E synthase)

Genes (Mus musculus)
Ptges  (prostaglandin E synthase)

Genes (Homo sapiens)
PTGES  (prostaglandin E synthase)


Additional Information