Linked Life Data

15492465

Source:http://linkedlifedata.com/resource/pubmed/id/15492465

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2004-10-25
pubmed:abstractText
Evidence suggests that S-nitrosylation is a biological process involved in cerebral ischemia. The aim of the present study was to elucidate the effects of S-nitrosylated (SNO) polyethylene glycol-conjugated (PEG) hemoglobin (Hb) developed as an artificial oxygen carrier, which can absorb free NO and translocate NO to a sulfhydryl (SH) moiety, on ischemic cerebral dysfunction. Long-term potentiation (LTP) in the perforant path-dentate gyrus synapses of the rat hippocampus was evaluated as functional outcome 4 days after transient incomplete cerebral ischemia (2-vessel occlusion: 2VO, 10 min). SNO-PEG-Hb (250 mg/kg, i.v.) administered on Day 0, 1, 2, or 4 (immediately, 24 h, 48 h, or 96 h after reperfusion, respectively) alleviated 2VO-induced LTP impairment with a therapeutic time window. The effect was significant when SNO-PEG-Hb was administered on Day 1 or 2. SNO-PEG-Hb altered NOS features observed in the vehicle-treated 2VO rat, upregulation of eNOS, nNOS, and iNOS expressions at mRNA and protein levels; SNO-PEG-Hb further upregulated eNOS and nNOS and downregulated iNOS expressions. These findings suggest that SNO-PEG-Hb might have protective effects on the rat hippocampus from ischemia/reperfusion-induced functional damages, thereby increasing the therapeutic potential as an artificial oxygen carrier for use in the area of oxygen therapy.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1347-8613
pubmed:author
pubmed:issnType
Print
pubmed:volume
96
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
188-98
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
An S-nitrosylated hemoglobin derivative protects the rat hippocampus from ischemia-induced long-term potentiation impairment with a time window.
pubmed:affiliation
Department of Neuropharmacology, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't