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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
1999-3-18
pubmed:abstractText
Arachidonic acid metabolites mediate inflammatory responses at a cellular level. The affinity of the newly synthesized compound YM158, 3-[(4-tert-butylthiazol-2-yl)methoxy]-5'-[3-(4-chlorobenzenesuf onyl)propyl-2'-(1H-tetrazol-5-ylmethoxy)benzanilide monosodium salt monohydrate, for leukotriene D4 and thromboxane A2 receptors was examined in radioligand binding assays. YM158 inhibited [3H]leukotriene D4 and [3H]U46619 (9,11-dideoxy-11alpha,9alpha-epoxymethanoprostaglandin F2alpha) binding to guinea pig lung membrane preparations, with Ki values of 0.64+/-0.06 nM for leukotriene D4 and 5.0+/-0.88 nM for thromboxane A2 receptors. The Hill coefficients (nH) did not significantly differ from unity, indicating that this antagonism is competitive. In contrast, YM158 showed no affinity for several other receptors, including neurotransmitter-related (alpha1-, alpha2-, beta-adrenoceptors, histamine, 5-HT, muscarinic, sigma), C5a, opioid, Ca2+ channel, K+ channel, protein kinase C, bradykinin, endothelin, neurokinin and platelet activating factor receptors. These studies indicate that YM158 is a highly selective dual antagonist for leukotriene D4 and thromboxane A2 receptors, and this has potential clinical and research applications.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0014-2999
pubmed:author
pubmed:issnType
Print
pubmed:day
4
pubmed:volume
362
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
229-33
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Binding of YM158, a new dual antagonist for leukotriene D4 and thromboxane A2 receptors, to guinea pig lung membranes.
pubmed:affiliation
Inflammation Research Pharmacology Laboratories, Institute for Drug Discovery Research, Yamanouchi Pharmaceutical, Ibaraki, Japan. arakida.yasuhito@yamanouchi.co.jp
pubmed:publicationType
Journal Article, Comparative Study