Linked Life Data

7999121

Source:http://linkedlifedata.com/resource/pubmed/id/7999121

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1995-1-17
pubmed:abstractText
Ochnaflavone, a medicinal herb product isolated from Lonicera japonica, strongly inhibited rat platelet phospholipase A2 (IC50, about 3 microM). Inactivation was concentration and pH dependent (maximum inactivation occurred between pH 9.0 and 10.0). Ochnaflavone inhibited the enzyme by a noncompetitive manner, with the apparent Ki value of 3 x 10(-5) M. Reversibility was studied directly by dialysis method; the inhibition was irreversible. In addition, the inhibitory activity of ochnaflavone is rather specific against group II phospholipase A2 than group I phospholipase A2 (IC50, about 20 microM). Addition of excess Ca2+ concentration up to 8 mM did not antagonize the inhibitory activity of ochnaflavone. These results indicate that the inhibition of phospholipase A2 by ochnaflavone may result from direct interaction with the enzyme.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
205
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
843-9
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Inactivation of phospholipase A2 by naturally occurring biflavonoid, ochnaflavone.
pubmed:affiliation
College of Pharmacy, Yeungnam University, Gyongsan, Korea.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't