quercetin


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quer·ce·tin

(kwer'sĕ-tin),
An aglycon of quercitrin, rutin, and other glycosides; occurs usually as the 3-rhamnoside; used in the treatment of abnormal capillary fragility.
Synonym(s): meletin, sophoretin

quercetin

(kwûr′sĭ-tĭn)
n.
A yellow powdered crystalline compound, C15H10O7, occurring as a glycoside in the rind and bark of numerous plants or synthesized and thought to have antihistaminic, anti-inflammatory, and antitumor properties.

quercetin

[kwur′sitin]
a yellow, crystalline, flavonoid pigment found in oak bark, the juice of lemons, asparagus, and other plants. It is used to reduce abnormal capillary fragility.

quercetin

The flavonoid alglucon of quercitrin, or rutin, and other glycosides, which is a widely distributed antioxidant present in fruits and vegetables, such as broccoli, Brussels sprouts, cabbage and oranges, as well as in rinds, barks, clover blossoms and pollen. Early data indicates that quercetin has antiviral, anti-inflammatory, and anticarcinogenic activity; it has been used for fibromyalgia, metabolic syndrome and as a monoamine oxidase inhibitor.

quercetin (kwerˑ·s·tn),

n flavonoid derived from red wine, citrus, onions, parsley, and tea. Has been used as an antioxidant, antiviral, and reported to help allergies, prostate inflammation, interstitial cystitis, atherosclerosis, and cataracts. Caution in patients taking anticoagulant or antiplatelet medications. Also called
quercetin chalcone.
References in periodicals archive ?
The aim of this study was to assess the ameliorative effects of melatonin and quercetin on depressive-like behavior and dyslipidemia in diabetic rats induced by STZ.
Continuing on a program of regular quercetin (1000 mg twice daily), % teaspoon caged quercetin twice daily, metformin-ER 500 mg, and astaxanthin.
Various interactions occurred in juice to which had been added catechin and quercetin; and in juice to which had been added trehalose and catechin, quercetin and gallic acid.
Editor's Note: Disease activity scores, number of tender joints, health assessment questionnaire scores, and physician global assessments significantly improved in the quercetin group while remaining essentially unchanged among those who received a placebo.
However, other studies reported significant decrease of serum total cholesterol by dietary quercetin [24] and onion extract [21].
Results: Proteasome activities following quercetin or rutin treatment were significantly augmented in comparison with non-treated cells.
So researchers began conducting studies of quercetin with rats using onion peel extract instead.
Only limited amounts of quercetin aglycone are found after ingestion of quercetin, though there is some controversy on this issue (see, e.
This compound was tentatively identified as quercetin 3-galactoside (9) that has been found from P.
group IV: STZ + Qu 80, rats in this group received quercetin in a daily dose of 100 mg/kg IP [18] for 12 days, followed by 1 week after induction of AD, as previously mentioned.
Quercetin group (n = 5): 5 ml buffer solution with lipid fraction + FeCl2 + 1 ml 10 mM H2O2 + 50 L 20 mM quercetin + 1 ml neutral buffer