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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2005-11-28
pubmed:abstractText
Inhibitory effect of kudzu isoflavones on arachidonic acid metabolism and nitric oxide (NO) production in lipopolysaccharide activated RAW 264.7 macrophages were investigated. Isoflavone aglycones, such as daidzein, genistein, biochanin A, and formononetin significantly suppressed arachidonic acid release (50 microM). Biochanin A, which displayed the most active inhibition on arachidonic acid release in HT-29 human colon cancer cells, exhibited its most potent suppression in RAW 264.7 cell (by 86%) without showing cytotoxicity. However, isoflavone glucosides, puerarin and daidzin, showed lower inhibitory activities on the release of arachidonic acid and its metabolites. In NO formation, biochanin A showed marked inhibition, by 62% (50 microM), followed by genistein, daidzein, formononetin, and daidzin, 56, 39, 33, and 8%, respectively. 5,7-Dihydroxyl group in the A-ring of isoflavones could be a key functional group responsible for the strong inhibitory activity of biochanin A and genistein on NO production. These activities may contribute to the antiinflammatory and anticarcinogenic properties of kudzu isoflavones.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1613-4125
pubmed:author
pubmed:issnType
Print
pubmed:volume
49
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1154-9
pubmed:dateRevised
2007-3-22
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Suppression of arachidonic acid metabolism and nitric oxide formation by kudzu isoflavones in murine macrophages.
pubmed:affiliation
Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901-8520, USA.
pubmed:publicationType
Journal Article