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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-2-4
pubmed:abstractText
Neuronal degeneration followed by glial activation (microglia and astrocytes) and nitric oxide synthase (NOS) expression in the hippocampus was investigated at 3 months after domoic acid (DA) administration and compared with DA treated rats at 5 days time interval which was reported earlier. Massive degeneration with complete absence of neurons in the hippocampal CA1 and CA3 regions and hypertrophied microglial cells showing intense immunoreaction with the antibody OX-42 was observed at 3 months after DA administration. Sparsely distributed OX-42 positive microglial cells were observed in the hippocampus of control rats at 3 months after saline treatment No apparent changes could be observed in the immunoreactivity of GFAP at 3 months after saline and DA administration. Neuronal nitric oxide synthase immunoreactive neurons were completely absent in the hippocampus at 3 months after DA administration. In contrast, nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d) histochemical analysis revealed absence of NADPH-d reactivity in the neurons, but positive reactivity in the microglial cells of CA1-CA3 regions in the hippocampus after DA treatment. Double immunofluorescense revealed co-expression of inducible nitric oxide synthase with immunoreactive OX-42 positive microglial cells in the hippocampal subfields at 3 months after DA administration. The microglia-produced NO appears to be a secondary phenomenon in the prolonged inflammatory process following DA-induced neuronal degeneration.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0304-3940
pubmed:author
pubmed:copyrightInfo
Copyright 2002 Elsevier Science Ireland Ltd.
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
338
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
49-52
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Induction of inducible nitric oxide synthase expression in activated microglia following domoic acid (DA)-induced neurotoxicity in the rat hippocampus.
pubmed:affiliation
Department of Anatomy, Faculty of Medicine, National University of Singapore, MD 10, 4 Medical Drive, Singapore 117597, Singapore.
pubmed:publicationType
Journal Article