Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
2004-5-4
pubmed:abstractText
Excess amount of cytokine produced by inflammatory stimuli contributes to the progression of myocardial damage in myocarditis. Some angiotensin II receptor type 1 antagonists are reported to inhibit proinflammatory cytokine production in vitro and in vivo. We tested the hypothesis that olmesartan, a novel angiotensin II receptor type 1 antagonist, ameliorated experimental autoimmune myocarditis (EAM) in rats attributing to the suppression of inflammatory cytokines in the heart. We orally administered olmesartan 1, 3, and 10 mg/kg/day to rats with EAM for 3 weeks. The results showed that olmesartan decreased blood pressure significantly compared with the untreated group, but markedly reduced the severity of myocarditis by comparing the heart weight/body weight ratio, pericardial effusion scores, macroscopic scores and microscopic scores. Myocardial interleukin (IL)- 1beta expression by western blotting and IL-1beta-positive staining cells by immunohistochemistry were significantly lower in rats with EAM given olmesartan treatment compared with those of rats given vehicle. We conclude that Olmesartan ameliorates acute EAM in rats. The cardioprotection of olmesartan may be due to suppression of inflammatory cytokines dependent of the hemodynamic modifications.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0300-8177
pubmed:author
pubmed:issnType
Print
pubmed:volume
259
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
217-22
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:15124927-Administration, Oral, pubmed-meshheading:15124927-Angiotensin II Type 1 Receptor Blockers, pubmed-meshheading:15124927-Animals, pubmed-meshheading:15124927-Antihypertensive Agents, pubmed-meshheading:15124927-Autoimmune Diseases, pubmed-meshheading:15124927-Dose-Response Relationship, Drug, pubmed-meshheading:15124927-Female, pubmed-meshheading:15124927-Imidazoles, pubmed-meshheading:15124927-Interleukin-1, pubmed-meshheading:15124927-Male, pubmed-meshheading:15124927-Myocarditis, pubmed-meshheading:15124927-Myocardium, pubmed-meshheading:15124927-Myosins, pubmed-meshheading:15124927-Rats, pubmed-meshheading:15124927-Rats, Inbred Lew, pubmed-meshheading:15124927-Receptor, Angiotensin, Type 1, pubmed-meshheading:15124927-Swine, pubmed-meshheading:15124927-Tetrazoles
pubmed:year
2004
pubmed:articleTitle
Beneficial effects of olmesartan, a novel angiotensin II receptor type 1 antagonist, upon acute autoimmune myocarditis.
pubmed:affiliation
Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't