Commentary on: Tissue Distribution of Quercetin in Rats and Pigs

The Journal of Nutrition;  July 1, 2005 ;     700+ words ......epithelial and the liver. Quercetin has at least 18 other...the hydroxyl groups of quercetin and make identification...the highest level of quercetin metabolites was found in the lungs...example, rats were fed quercetin for 10 d, and although quercetin metabolites were found ...

Rat Gastrointestinal Tissues Metabolize Quercetin1,2

The Journal of Nutrition;  January 1, 2006 ;     700+ words ......cecum, and 46% in colon. Quercetin was further metabolized...exclusively as sulfated methyl-quercetin glucuronide. The unique pattern of quercetin metabolites in each GI tissue indicates...4, 2006. KEY WORDS: * quercetin * metabolism * gastrointestinal...single-dose administration of ...

Quercetin for hypertension?(Literature Review & Commentary)(Brief article)

Townsend Letter: The Examiner of Alternative Medicine;  May 1, 2007 ;     294 words ......sucrose (HFS) containing varying amounts of quercetin (0, 0.02, 0.07, 0.2, or 0.5%). In rats fed no quercetin, the mean systolic blood pressure was...significantly blunted by all doses of quercetin, but 0.5% quercetin was significantly...

PROTOLYTIC EQUILIBRIA AND PHOTODEGRADATION OF QUERCETIN IN AQUEOUS...

Collection of Czechoslovak Chemical Communications;  November 1, 2007 ;     700+ words ......dissociation constants of OH groups of quercetin in aqueous solutions were determined...the effects of UV irradiation on quercetin at pH 5.00, 7.50 and 10.00 indicated that UV irradiation accelerated quercetin autoxidation via the formation of...

Quercetin Reduced Activity-Induced Illness

Dynamic Chiropractic;  February 12, 2008 ;     700+ words ......not compete fell ill at a rate of one out of 50.1 Quercetin Quercetin is a polyphenolic compound classified as a flavonoid and more specifically, a flavonol. Quercetin has anti-inflammatory, antihistaminic and antioxidant...

Ellagic Acid Potentiates the Effect of Quercetin on p21^sup waf1/cip1^,...

The Journal of Nutrition;  March 1, 2005 ;     700+ words ......In a previous study, it was demonstrated that quercetin and ellagic acid interacted synergistically...signal transduction pathways. We found that quercetin and combinations of quercetin and ellagic acid nonsynergistically increased...

Bioavailability of Quercetin in Pigs Is Influenced by the Dietary Fat...

The Journal of Nutrition;  June 1, 2004 ;     700+ words ...ABSTRACT The flavonol quercetin is one of the most prevalent flavonoids found in edible...the influence of dietary fat on oral bioavailability of quercetin was investigated. Quercetin (30 mol/kg body weight) was administered either as the...

Quercetin Induces Apoptosis via Caspase Activation, Regulation of Bcl-2,...

The Journal of Nutrition;  November 1, 2006 ;     700+ words ......study was to investigate the effect of quercetin on the activation of the apoptotic pathway...HepG2). Treatment of cells for 18 h with quercetin induced cell death in a dose-dependent...viability. Incubation of HepG2 cells with quercetin for 18 h induced apoptosis by the activation...

Comparison of the intestinal absorption of quercetin, phloretin and their...

The Journal of Nutrition;  August 1, 2001 ;     700+ words ......Metabolism ABSTRACT Absorption and metabolism of quercetin and isoquercitrin (quercetin 3-O-glucose) were investigated in rats after...isoquercitrin hydrolysis. The 3-0-glucosylation of quercetin improved the net absorption of the aglycone...

Quercetin Protects Against Linoleic Acid-Induced Porcine Endothelial Cell...

The Journal of Nutrition;  April 1, 2004 ;     700+ words ......Consumption of plant phenolics, such as quercetin, may be associated with decreased risk...present study focused on the effect of quercetin on linoleic acid-induced oxidative stress...we further investigated the effect of quercetin on PPAR[gamma]. Porcine pulmonary-arterial...

Carbon dioxide is the major metabolite of quercetin in humans

The Journal of Nutrition;  October 1, 2001 ;     700+ words ...Carbon Dioxide Is the Major Metabolite of Quercetin in Humans1,2 ABSTRACT A previous study...that dietary glucosides of the flavonoid quercetin are hydrolyzed efficiently in the intestinal...absorption of a large fraction of the quercetin aglycone. To determine the fate of quercetin...

100 apples a day keep a doctor away.

Australasian Business Intelligence;  September 18, 2007 ;     187 words ......s research arm, DARPA, has found that quercetin - a flavonoid found in fruits, berries...heavy packs for days on end were given quercetin or a placebo. Nearly all of those given the quercetin did not suffer from chest infections...

Functional Analysis of a Predicted Flavonol Synthase Gene Family in...

Plant Physiology;  July 1, 2008 ;     700+ words ......mediate the production of the flavonols, quercetin and kaempferol, in a tissue-specific...or more of the three major flavonols, quercetin, kaempferol, and myricetin, which differ...specifically induce the accumulation of quercetin derivatives in Petunia, which have a...

Quercetin Inhibits TNF-Induced NF-[kappa]B Transcription Factor...

The Journal of Nutrition;  May 1, 2007 ;     700+ words ......characterized the molecular mechanisms by which quercetin and its enteric bacterial metabolites...murine model of experimentalileitis. Quercetin inhibited TNF-induced interferon-γ...suggesting that microbial transformation of quercetin completely abolished its anti-inflammatory...

Quercetin: Nature's antihistamine

Better Nutrition;  April 1, 1998 ;     671 words ......basic research, and experimental studies. Quercetin: a biological response modifier Flavonoids...Anti-inflammatory/anti-allergy actions. Quercetin has demonstrated significant anti-inflammatory...other allergic/inflammatory compounds. Quercetin appears to be useful in virtually all...