A flavonol widely distributed in plants. It is an antioxidant, like many other phenolic heterocyclic compounds. Glycosylated forms include RUTIN and quercetrin.
A group of 3-hydroxy-4-keto-FLAVONOIDS.
A group of phenyl benzopyrans named for having structures like FLAVONES.
Herbaceous biennial plants and their edible bulbs, belonging to the Liliaceae.
Naturally occurring or synthetic substances that inhibit or retard the oxidation of a substance to which it is added. They counteract the harmful and damaging effects of oxidation in animal tissues.
Any compound that contains a constituent sugar, in which the hydroxyl group attached to the first carbon is substituted by an alcoholic, phenolic, or other group. They are named specifically for the sugar contained, such as glucoside (glucose), pentoside (pentose), fructoside (fructose), etc. Upon hydrolysis, a sugar and nonsugar component (aglycone) are formed. (From Dorland, 28th ed; From Miall's Dictionary of Chemistry, 5th ed)
Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.
A group of FLAVONOIDS characterized with a 4-ketone.
Benzene derivatives that include one or more hydroxyl groups attached to the ring structure.
A large class of organic compounds having more than one PHENOL group.
An antioxidant flavonoid, occurring especially in woody plants as both (+)-catechin and (-)-epicatechin (cis) forms.
A medical specialty concerned with the hypersensitivity of the individual to foreign substances and protection from the resultant infection or disorder.
The Nobel Prize is not a medical term, but a prestigious international award given annually in several categories, including Physiology or Medicine, for significant contributions to humanity that have conferred the greatest benefit to mankind.
"Awards and prizes in a medical context refer to formal recognitions, typically bestowed upon healthcare professionals or researchers, for significant contributions to medical advancements, patient care, or professional organizations, often involving monetary rewards, certificates, or trophies."
Liquid formulations for the nutrition of infants that can substitute for BREAST MILK.
The levels of excellence which characterize the health service or health care provided based on accepted standards of quality.
Hard or soft soluble containers used for the oral administration of medicine.

Effect of quercetin on activities of protein kinase C and tyrosine protein kinase from HL-60 cells. (1/1050)

AIM: To study the effect of quercetin (Que) on the activities of cytosol and membrane protein kinase C (PKC) and tyrosine protein kinase (TPK) from HL-60 cells in vitro. METHODS: The number of viable cells was counted by a trypan blue dye exclusion test. PKC activity was assayed by incubating PKC with histone III S and [gamma-32P]ATP. TPK activity was assayed by incubating TPK with poly glutamate.tyrosine (4:1). RESULTS: Que inhibited the proliferation of HL-60 cells in a concentration-dependent manner, its IC50 was 29 (22-37) mumol.L-1 after 48-h treatment; Que strongly inhibited the activity of cytosol PKC and membrane TPK with IC50 31 (20-48) mumol.L-1, 24 (13-45) mumol.L-1, respectively, but did not affect membrane PKC and cytosol TPK from HL-60 cells in vitro. CONCLUSION: The inhibitory effect of Que on the growth of tumor cells is related to its inhibitory effects on PKC and/or TPK.  (+info)

Quercetin induced apoptosis in human leukemia HL-60 cells. (2/1050)

AIM: To examine whether quercetin (Que) might induce apoptosis in human leukemia HL-60 cells. METHODS: DNA fragmentation was visualized by agarose gel electrophoresis. Inhibition of proliferation was measured with a colorimetric MTT-assay. The DNA degradation was determined using flow cytometry, and the microscopic changes were observed by an electron microscope. RESULTS: Que 15-120 mumol.L-1 elicited typical apoptosis morphological changes including condensed chromatin, nuclear fragmentation, and reduction in volume. DNA fragmentation and DNA degradation in a concentration-dependent manner in HL-60 cells. Que inhibited HL-60 cell proliferation. The values of IC50 and 95% confidence limits were 43 (30-61) mumol.L-1 after 48-h treatment with Que. CONCLUSION: Que induced apoptosis in HL-60 cells.  (+info)

Quercetin inhibited DNA synthesis and induced apoptosis associated with increase in c-fos mRNA level and the upregulation of p21WAF1CIP1 mRNA and protein expression during liver regeneration after partial hepatectomy. (3/1050)

Quercetin, a widely distributed bioflavonoid, inhibited DNA synthesis in regenerating liver after partial hepatectomy. This inhibition was accompanied by apoptosis, evidenced by in situ end-labeling and gel electrophoresis of DNA fragmentation. Characteristic DNA fragmentation was detected as early as 2 h after injection. Northern blot analysis revealed that quercetin induced the increases in c-fos and p21WAF1CIP1 mRNA levels within 2 h. The expression of p21 protein was also enhanced, while p53 mRNA and protein levels were not affected by quercetin. These results suggest that quercetin-induced apoptosis is associated with the increase in c-fos mRNA level and the upregulation of p21 mRNA and protein expression, probably in a p53-independent pathway.  (+info)

Protective effect of flavonoids on endothelial cells against linoleic acid hydroperoxide-induced toxicity. (4/1050)

The protective effect of flavonoids against linoleic acid hydroperoxide (LOOH)-induced cytotoxicity was examined by using cultured endothelial cells. When the cells were incubated with both LOOH and flavonoids, most flavonols protected the cells from injury by LOOH. Flavones bearing an ortho-dihydroxy structure also showed a protective effect against the cytotoxicity of LOOH. However, flavanones had no effect. The structure-activity relationship revealed the presence of either the ortho-di-hydroxy structure in the B ring of the flavonoids or 3-hydroxyl and 4-oxo groups in the C ring to be important for the protective activities. The interaction between flavonoids and a-tocopherol was also examined in this system. Flavonoids that were protective against LOOH-induced cytotoxicity had at least an additive effect on the action of alpha-tocopherol against LOOH-induced damage.  (+info)

Effect of dietary antioxidants on serum lipid contents and immunoglobulin productivity of lymphocytes in Sprague-Dawley rats. (5/1050)

Sprague-Dawley rats were fed alpha-tocopherol, tocotrienol, or quercetin to examine their dietary effects on serum lipid contents and immunoglobulin productivity. In tocotrienol or quercetin groups, serum triglyceride was lower than in the none group. Moreover, in the alpha-tocopherol group, serum IgA level and IgA productivity of MLN lymphocytes were high, while in the tocotrienol group, IgM productivity of spleen lymphocytes and IgA, IgG, and IgM productivity of MLN lymphocytes were high. Thus, we suggested each antioxidant had different effects in rats.  (+info)

Inhibition of ATPase, GTPase and adenylate kinase activities of the second nucleotide-binding fold of the cystic fibrosis transmembrane conductance regulator by genistein. (6/1050)

In the presence of ATP, genistein, like the ATP analogue adenosine 5'-[beta,gamma-imido]triphosphate (pp[NH]pA), increases cystic fibrosis transmembrane conductance regulator (CFTR) chloride currents by prolonging open times. As pp[NH]pA is thought to increase CFTR currents by interfering with ATP hydrolysis at the second nucleotide-binding fold (NBF-2), the present study was undertaken to investigate the effects of genistein on a fusion protein comprising maltose-binding protein (MBP) and NBF-2 (MBP-NBF-2). MBP-NBF-2 exhibited ATPase, GTPase and adenylate kinase activities that were inhibited by genistein in a partial non-competitive manner with respect to ATP or GTP. Ki values for competitive and uncompetitive inhibition were respectively 20 microM and 63 microM for ATPase, 15 microM and 54 microM for GTPase, and 46 microM and 142 microM for adenylate kinase. For ATPase activity, genistein reduced Vmax by 29% and Vmax/Km by 77%. Additional evidence for complex-formation between genistein and MBP-NBF-2 was obtained by the detection of genistein-dependent alterations in the CD spectrum of MBP-NBF-2 that were consistent with the formation of a higher-ordered state. Addition of MBP-NBF-2 increased the fluorescence intensity of genistein, consistent with a change to a less polar environment. pp[NH]pA partially eliminated this enhanced fluorescence of genistein. These observations provide the first direct biochemical evidence that genistein interacts with CFTR, thus inhibiting NBF-2 activity, and suggest a similar mechanism for genistein-dependent stimulation of CFTR chloride currents.  (+info)

Dietary flavonols quercetin and kaempferol are ligands of the aryl hydrocarbon receptor that affect CYP1A1 transcription differentially. (7/1050)

Transcriptional activation of the human CYP1A1 gene (coding for cytochrome P450 1A1) is mediated by the aryl hydrocarbon receptor (AhR). In the present study we have examined the effect of the common dietary polyphenolic compounds quercetin and kaempferol on the transcription of CYP1A1 and the function of the AhR in MCF-7 human breast cancer cells. Quercetin caused a time- and concentration-dependent increase in the amount of CYP1A1 mRNA and CYP1A1 enzyme activity in MCF-7 cells. The increase in CYP1A1 mRNA caused by quercetin was prevented by the transcription inhibitor actinomycin D. Quercetin also caused an increase in the transcription of a chloramphenicol reporter vector containing the CYP1A1 promoter. Quercetin failed to induce CYP1A1 enzyme activity in AhR-deficient MCF-7 cells. Gel retardation studies demonstrated that quercetin activated the ability of the AhR to bind to an oligonucleotide containing the xenobiotic-responsive element (XRE) of the CYP1A1 promoter. These results indicate that quercetin's effect is mediated by the AhR. Kaempferol did not affect CYP1A1 expression by itself but it inhibited the transcription of CYP1A1 induced by the prototypical AhR ligand 2,3,7, 8-tetrachlorodibenzo-p-dioxin (TCDD), as measured by a decrease in TCDD-induced CYP1A1 promoter-driven reporter vector activity, and CYP1A1 mRNA in cells. Kaempferol also abolished TCDD-induced XRE binding in a gel-shift assay. Both compounds were able to compete with TCDD for binding to a cytosolic extract of MCF-7 cells. Known ligands of the AhR are, for the most part, man-made compounds such as halogenated and polycyclic aromatic hydrocarbons. These results demonstrate that the dietary flavonols quercetin and kaempferol are natural, dietary ligands of the AhR that exert different effects on CYP1A1 transcription.  (+info)

Competitive and noncompetitive inhibition of the DNA-dependent protein kinase. (8/1050)

The DNA-dependent protein kinase (DNA-PK) is a serine/threonine protein kinase that is involved in mammalian DNA double-strand break repair. The catalytic subunit of DNA-PK (DNA-PKcs) shares sequence homology in its kinase domain with phosphatidylinositol (PI) 3-kinase. Here, we provide a detailed kinetic analysis of DNA-PK inhibition by the PI 3-kinase inhibitor wortmannin and demonstrate this inhibition to be of a noncompetitive nature, with a Ki of 120 nM. Another inhibitor of PI 3-kinase. LY294002, its parent compound, quercetin, and other derivatives have also been studied. These chemicals are competitive inhibitors of DNA-PK, with LY294002 having a Ki of 6.0 microM. Using an antibody to wortmannin, we found that this compound binds covalently to the kinase domain of DNA-PKcs both in vitro and in vivo. Binding of wortmannin to the active site of DNA-PKcs is inhibited by ATP but not by a peptide substrate. Furthermore, wortmannin is able to bind to DNA-PKcs independently of Ku, and it is not stimulated by the presence of DNA. This suggests that the ATP binding site of DNA-PKcs is open constitutively and that DNA activation of the kinase is mediated via another mechanism.  (+info)

Quercetin is a type of flavonoid antioxidant that is found in plant foods, including leafy greens, tomatoes, berries, and broccoli. It has been studied for its potential health benefits, such as reducing inflammation, protecting against damage to cells, and helping to reduce the risk of heart disease and cancer. Quercetin is also known for its ability to stabilize mast cells and prevent the release of histamine, making it a popular natural remedy for allergies. It is available in supplement form, but it is always recommended to consult with a healthcare provider before starting any new supplement regimen.

Flavonols are a type of flavonoid, which is a class of plant and fungal metabolites. They are characterized by the presence of a 3-hydroxyflavone skeleton. Flavonols are found in a variety of plants and are known for their antioxidant properties. Some common dietary sources of flavonols include onions, kale, broccoli, apples, tea, and red wine. They have been studied for their potential health benefits, including reducing the risk of chronic diseases such as cancer and cardiovascular disease. Flavonols are also known to have anti-inflammatory, neuroprotective, and antimicrobial properties.

Flavonoids are a type of plant compounds with antioxidant properties that are beneficial to health. They are found in various fruits, vegetables, grains, and wine. Flavonoids have been studied for their potential to prevent chronic diseases such as heart disease and cancer due to their ability to reduce inflammation and oxidative stress.

There are several subclasses of flavonoids, including:

1. Flavanols: Found in tea, chocolate, grapes, and berries. They have been shown to improve blood flow and lower blood pressure.
2. Flavones: Found in parsley, celery, and citrus fruits. They have anti-inflammatory and antioxidant properties.
3. Flavanonols: Found in citrus fruits, onions, and tea. They have been shown to improve blood flow and reduce inflammation.
4. Isoflavones: Found in soybeans and legumes. They have estrogen-like effects and may help prevent hormone-related cancers.
5. Anthocyanidins: Found in berries, grapes, and other fruits. They have antioxidant properties and may help improve vision and memory.

It is important to note that while flavonoids have potential health benefits, they should not be used as a substitute for medical treatment or a healthy lifestyle. It is always best to consult with a healthcare professional before starting any new supplement regimen.

I'm sorry for any confusion, but "onions" are not a medical term. They are a type of vegetable, specifically a variety of bulb vegetables, known scientifically as Allium cepa. Onions are widely used in cooking and have been cultivated for centuries for their unique, pungent flavor and potential health benefits. If you have any questions about onions in a culinary or nutritional context, I'd be happy to try to help answer those!

Antioxidants are substances that can prevent or slow damage to cells caused by free radicals, which are unstable molecules that the body produces as a reaction to environmental and other pressures. Antioxidants are able to neutralize free radicals by donating an electron to them, thus stabilizing them and preventing them from causing further damage to the cells.

Antioxidants can be found in a variety of foods, including fruits, vegetables, nuts, and grains. Some common antioxidants include vitamins C and E, beta-carotene, and selenium. Antioxidants are also available as dietary supplements.

In addition to their role in protecting cells from damage, antioxidants have been studied for their potential to prevent or treat a number of health conditions, including cancer, heart disease, and age-related macular degeneration. However, more research is needed to fully understand the potential benefits and risks of using antioxidant supplements.

Glycosides are organic compounds that consist of a glycone (a sugar component) linked to a non-sugar component, known as an aglycone, via a glycosidic bond. They can be found in various plants, microorganisms, and some animals. Depending on the nature of the aglycone, glycosides can be classified into different types, such as anthraquinone glycosides, cardiac glycosides, and saponin glycosides.

These compounds have diverse biological activities and pharmacological effects. For instance:

* Cardiac glycosides, like digoxin and digitoxin, are used in the treatment of heart failure and certain cardiac arrhythmias due to their positive inotropic (contractility-enhancing) and negative chronotropic (heart rate-slowing) effects on the heart.
* Saponin glycosides have potent detergent properties and can cause hemolysis (rupture of red blood cells). They are used in various industries, including cosmetics and food processing, and have potential applications in drug delivery systems.
* Some glycosides, like amygdalin found in apricot kernels and bitter almonds, can release cyanide upon hydrolysis, making them potentially toxic.

It is important to note that while some glycosides have therapeutic uses, others can be harmful or even lethal if ingested or otherwise introduced into the body in large quantities.

A plant extract is a preparation containing chemical constituents that have been extracted from a plant using a solvent. The resulting extract may contain a single compound or a mixture of several compounds, depending on the extraction process and the specific plant material used. These extracts are often used in various industries including pharmaceuticals, nutraceuticals, cosmetics, and food and beverage, due to their potential therapeutic or beneficial properties. The composition of plant extracts can vary widely, and it is important to ensure their quality, safety, and efficacy before use in any application.

Flavanones are a type of flavonoid, which is a class of plant pigments widely found in fruits, vegetables, and other plants. Flavanones are known for their antioxidant properties and potential health benefits. They are typically found in citrus fruits such as oranges, lemons, and grapefruits. Some common flavanones include hesperetin, naringenin, and eriodictyol. These compounds have been studied for their potential effects on cardiovascular health, cancer prevention, and neuroprotection, although more research is needed to fully understand their mechanisms of action and therapeutic potential.

Phenols, also known as phenolic acids or phenol derivatives, are a class of chemical compounds consisting of a hydroxyl group (-OH) attached to an aromatic hydrocarbon ring. In the context of medicine and biology, phenols are often referred to as a type of antioxidant that can be found in various foods and plants.

Phenols have the ability to neutralize free radicals, which are unstable molecules that can cause damage to cells and contribute to the development of chronic diseases such as cancer, heart disease, and neurodegenerative disorders. Some common examples of phenolic compounds include gallic acid, caffeic acid, ferulic acid, and ellagic acid, among many others.

Phenols can also have various pharmacological activities, including anti-inflammatory, antimicrobial, and analgesic effects. However, some phenolic compounds can also be toxic or irritating to the body in high concentrations, so their use as therapeutic agents must be carefully monitored and controlled.

Polyphenols are a type of phytochemical, which are naturally occurring compounds found in plant-based foods. They contain multiple phenol units and can be classified into several subgroups, including flavonoids, stilbenes, tannins, and lignans. These compounds have been studied for their potential health benefits due to their antioxidant, anti-inflammatory, and immune-modulating properties. They are found in a wide variety of foods such as fruits, vegetables, tea, wine, chocolate, and cereals.

A catechin is a type of plant phenol and antioxidant found in various foods and beverages, such as tea, cocoa, and certain fruits and vegetables. Chemically, catechins are flavan-3-ols, which are a subclass of flavonoids. They have several potential health benefits, including reducing the risk of cardiovascular disease, cancer, and neurodegenerative disorders.

Catechins are known to have anti-inflammatory, antimutagenic, and antidiabetic properties. They can also help improve oral health by inhibiting the growth of harmful bacteria in the mouth. The most well-known catechin is epigallocatechin gallate (EGCG), which is found in high concentrations in green tea and has been extensively studied for its potential health benefits.

In summary, a catechin is a type of antioxidant compound found in various plant-based foods and beverages that may have several health benefits, including reducing the risk of chronic diseases and improving oral health.

Allergy and Immunology is a medical specialty that deals with the diagnosis and treatment of allergic diseases and immune system disorders. An Allergist/Immunologist is a physician who has undergone specialized training in this field.

Allergies occur when the immune system overreacts to normally harmless substances, such as pollen, dust mites, or certain foods, resulting in symptoms like sneezing, itching, runny nose, and rashes. Immunology, on the other hand, deals with disorders of the immune system, which can be caused by either an overactive or underactive immune response. Examples of immune disorders include autoimmune diseases (where the body attacks its own tissues), immunodeficiency disorders (where the immune system is weakened and unable to fight off infections), and hypersensitivity reactions (overreactions of the immune system to harmless substances).

The Allergist/Immunologist uses various diagnostic tests, such as skin prick tests, blood tests, and challenge tests, to identify the specific allergens or immune triggers that are causing a patient's symptoms. Once the diagnosis is made, they can recommend appropriate treatments, which may include medications, immunotherapy (allergy shots), lifestyle changes, or avoidance of certain substances.

In addition to treating patients, Allergist/Immunologists also conduct research into the underlying causes and mechanisms of allergic diseases and immune disorders, with the goal of developing new and more effective treatments.

I'm sorry for any confusion, but the term "Nobel Prize" is not a medical definition. The Nobel Prize is an international award given annually in several categories, and one of those categories is physiology or medicine. The Nobel Prize in Physiology or Medicine is awarded to individuals who have made significant discoveries of outstanding importance in the fields of life sciences and medicine. It is one of the most prestigious awards in these fields.

"Awards and prizes" in a medical context generally refer to recognitions given to individuals or organizations for significant achievements, contributions, or advancements in the field of medicine. These can include:

1. Research Awards: Given to researchers who have made significant breakthroughs or discoveries in medical research.
2. Lifetime Achievement Awards: Recognizing individuals who have dedicated their lives to advancing medicine and healthcare.
3. Humanitarian Awards: Presented to those who have provided exceptional service to improving the health and well-being of underserved populations.
4. Innovation Awards: Given to recognize groundbreaking new treatments, technologies, or approaches in medicine.
5. Educator Awards: Honoring medical educators for their contributions to teaching and mentoring future healthcare professionals.
6. Patient Care Awards: Recognizing excellence in patient care and advocacy.
7. Public Health Awards: Given for outstanding work in preventing disease and promoting health at the population level.
8. Global Health Awards: Honoring those who have made significant contributions to improving health outcomes in low-resource settings around the world.

These awards can be given by various organizations, including medical societies, hospitals, universities, pharmaceutical companies, and government agencies.

Infant formula is a manufactured food designed and marketed for feeding to babies and infants under 12 months of age, but may also be used as a supplementary feedings for older children. It is usually derived from cow's milk, but can also be made from soy or other proteins. Infant formulas are designed to provide a well-balanced diet with appropriate amounts of protein, fat, carbohydrate, vitamins, and minerals to support growth and development in infants who are not breastfed. They come in various forms such as powder, concentrate, or ready-to-feed liquid and must meet strict nutritional and safety standards set by regulatory agencies like the U.S. Food and Drug Administration (FDA) and the European Commission (EC).

Quality of health care is a term that refers to the degree to which health services for individuals and populations increase the likelihood of desired health outcomes and are consistent with current professional knowledge. It encompasses various aspects such as:

1. Clinical effectiveness: The use of best available evidence to make decisions about prevention, diagnosis, treatment, and care. This includes considering the benefits and harms of different options and making sure that the most effective interventions are used.
2. Safety: Preventing harm to patients and minimizing risks associated with healthcare. This involves identifying potential hazards, implementing measures to reduce errors, and learning from adverse events to improve systems and processes.
3. Patient-centeredness: Providing care that is respectful of and responsive to individual patient preferences, needs, and values. This includes ensuring that patients are fully informed about their condition and treatment options, involving them in decision-making, and providing emotional support throughout the care process.
4. Timeliness: Ensuring that healthcare services are delivered promptly and efficiently, without unnecessary delays. This includes coordinating care across different providers and settings to ensure continuity and avoid gaps in service.
5. Efficiency: Using resources wisely and avoiding waste, while still providing high-quality care. This involves considering the costs and benefits of different interventions, as well as ensuring that healthcare services are equitably distributed.
6. Equitability: Ensuring that all individuals have access to quality healthcare services, regardless of their socioeconomic status, race, ethnicity, gender, age, or other factors. This includes addressing disparities in health outcomes and promoting fairness and justice in healthcare.

Overall, the quality of health care is a multidimensional concept that requires ongoing evaluation and improvement to ensure that patients receive the best possible care.

A capsule is a type of solid pharmaceutical dosage form in which the drug is enclosed in a small shell or container, usually composed of gelatin or other suitable material. The shell serves to protect the drug from degradation, improve its stability and shelf life, and facilitate swallowing by making it easier to consume. Capsules come in various sizes and colors and can contain one or more drugs in powder, liquid, or solid form. They are typically administered orally but can also be used for other routes of administration, such as rectal or vaginal.

The major metabolites of orally absorbed quercetin are quercetin-3-glucuronide, 3'-methylquercetin-3-glucuronide, and quercetin ... 3-dioxygenase Quercetin 3-O-methyltransferase Quercetin-3-sulfate 3'-sulfotransferase Quercetin-3-sulfate 4'-sulfotransferase ... Quercetin is the aglycone form of a number of other flavonoid glycosides, such as rutin (also known as quercetin-3-O-rutinoside ... Taken together, the quercetin glucuronides have a half life around 11-12 hours. In rats, quercetin did not undergo any ...
... or Quercetol glucuronide may refer to: Quercetin 3-O-glucuronide Quercetin 3'-O-glucuronide Flavonoid ...
In enzymology, a quercetin 3-O-methyltransferase (EC 2.1.1.76) is an enzyme that catalyzes the chemical reaction S-adenosyl-L- ... Portal: Biology v t e (EC 2.1.1, Enzymes of unknown structure, Quercetin, Flavonols metabolism, O-methylated flavonoids ...
In enzymology, a quercetin 2,3-dioxygenase (EC 1.13.11.24) is an enzyme that catalyzes the chemical reaction quercetin + O2 ... Portal: Biology v t e (EC 1.13.11, Iron enzymes, Copper enzymes, Enzymes of known structure, Quercetin, All stub articles, ... Bowater L, Fairhurst SA, Just VJ, Bornemann S (2004). "Bacillus subtilis YxaG is a novel Fe-containing quercetin 2,3- ... The systematic name of this enzyme class is quercetin:oxygen 2,3-oxidoreductase (decyclizing). Other names in common use ...
Quercetin 3-sulfate is a plasma human metabolite of quercetin. It is the sulfate conjugate of quercetin. Quercetin-3-sulfate 3 ... Quercetin-3-sulfate 4'-sulfotransferase is an enzyme that uses 3'-phosphoadenylyl sulfate and quercetin 3-sulfate to produce ... Quercetin-3,3'-bissulfate 7-sulfotransferase is an enzyme that uses 3'-phosphoadenylyl sulfate and quercetin 3,3'-bissulfate to ... 10.1002/biof.5520220142 Metabolism of quercetin-7- and quercetin-3-glucuronides by an in vitro hepatic model: the role of human ...
... is a flavonol glycoside found in onions (Allium cepa) and in horse chestnut seeds (Aesculus ... Olsson, Marie E.; Gustavsson, Karl-Erik; Vågen, Ingunn M. (2010). "Quercetin and Isorhamnetin in Sweet and Red Cultivars of ... Wagner, J. (1961). "Quercetin-3,4′-diglukosid, ein Flavonolglykosid des Roßkastaniensamens". Die Naturwissenschaften. 48 (2): ... "Dietary quercetin glycosides: Antioxidant activity and induction of the anticarcinogenic phase II marker enzyme quinone ...
... quercetin 3,4'-bissulfate Thus, the two substrates of this enzyme are 3'-phosphoadenylyl sulfate and quercetin 3-sulfate, ... In enzymology, a quercetin-3-sulfate 4'-sulfotransferase (EC 2.8.2.27) is an enzyme that catalyzes the chemical reaction 3'- ... Portal: Biology v t e (EC 2.8.2, Enzymes of unknown structure, Quercetin, All stub articles, Transferase stubs). ... The systematic name of this enzyme class is 3'-phosphoadenylyl-sulfate:quercetin-3-sulfate 4'-sulfotransferase. Other names in ...
... quercetin 3,3'-bissulfate Thus, the two substrates of this enzyme are 3'-phosphoadenylyl sulfate and quercetin 3-sulfate, ... In enzymology, a quercetin-3-sulfate 3'-sulfotransferase (EC 2.8.2.26) is an enzyme that catalyzes the chemical reaction 3'- ... Portal: Biology v t e (EC 2.8.2, Enzymes of unknown structure, Quercetin, All stub articles, Transferase stubs). ... The systematic name of this enzyme class is 3'-phosphoadenylyl-sulfate:quercetin-3-sulfate 3'-sulfotransferase. Other names in ...
... quercetin 3,7,3'-trisulfate Thus, the two substrates of this enzyme are 3'-phosphoadenylyl sulfate and quercetin 3,3'- ... In enzymology, a quercetin-3,3'-bissulfate 7-sulfotransferase (EC 2.8.2.28) is an enzyme that catalyzes the chemical reaction 3 ... Portal: Biology v t e (EC 2.8.2, Enzymes of unknown structure, Quercetin, All stub articles, Transferase stubs). ... The systematic name of this enzyme class is 3'-phosphoadenylyl-sulfate:quercetin-3,3'-bissulfate 7-sulfotransferase. Other ...
Quercetin - a plant pigment used in dietary supplements that have been promoted for their ability to prevent and treat cancer; ... "Quercetin". American Cancer Society. November 2008. "Revici's Guided Chemotherapy". American Cancer Society. November 2008. For ... however, according to the American Cancer society, "there is no reliable clinical evidence that quercetin can prevent or treat ...
It is argued that its mechanism of action is due to the flavonoid quercetin, as it inhibits the release of histamine.[ ... Kelly, Gregory S. (2011-06-01). "Quercetin. Monograph". Alternative Medicine Review. 16 (2): 172-194. ISSN 1089-5159. PMID ...
Quercetin 3,4'-diglucoside, a flavonol glycoside can also be found in horse chestnut seeds. Leucocyanidin, leucodelphinidin and ... Wagner, J. (1961). "Quercetin-3,4?-diglukosid, ein Flavonolglykosid des Roßkastaniensamens". Die Naturwissenschaften. 48 (2): ...
... is the 3-O-arabinoside of quercetin. It is found in the leaves of Psidium guajava, the common guava. Prabu, G.R.; ... Quercetin, avicularin, and guaijaverin". Journal of the Chemical Society (Resumed): 3320. doi:10.1039/JR9580003320. v t e ( ... Seshadri, T.R.; Vasishta, Krishna (1965). "Polyphenols of the leaves of psidium guava-quercetin, guaijaverin, leucocyanidin and ... Quercetin glycosides, Arabinosides, Psidium, All stub articles, Aromatic compound stubs). ...
Quercetin 2,3-dioxygenase (quercetinase, QueD) catalyzes the dioxygenolytic cleavage of quercetin to 2- ... Quercetin, role in metabolism). Acireductone (1,2-dihydroxy-5-(methylthio)pent-1-en-3-one) dioxygenase (ARD) is found in both ... These enzymes catalyze the degradation of quinolone heterocycles in a manner similar to quercetin dioxygenase, but are thought ... Schaab MR, Barney BM, Francisco WA (January 2006). "Kinetic and spectroscopic studies on the quercetin 2,3-dioxygenase from ...
Proanthocyanidins present (cyanidin and delphinidin). Flavonols present (kaempferol and quercetin). The fruits produce 2.5 - 5 ...
Quercetin 3-O-sulfate Pang, K; Schwab, A; Goresky, C; Chiba, M (1994). "Transport, binding, and metabolism of sulfate ...
Flavonols, kaempferol and/or quercetin present. Many of these plants are poisonous. The Mexican prickly poppy is poisonous if ...
... quercetin. Calcium bisulfite is not the optimum bisulfite compound for this reaction since the calcium ions can be removed from ... "Quercetin from Fir and Pine Bark". Industrial & Engineering Chemistry. 45 (9): 2096-2097. doi:10.1021/ie50525a047. Retrieved ...
... has two stereocenters on the C-ring, as opposed to quercetin which has none. For example, (+)-taxifolin has (2R,3R)- ... Taxifolin is not mutagenic and less toxic than the related compound quercetin. It acts as a potential chemopreventive agent by ... However, arbutin acts as quercetin extremely mutagenic, carcinogenic and toxic. Taxifolin also enhances the efficacy of ... "Quercetin". pubchem.ncbi.nlm.nih.gov. "(+)-taxifolin (CHEBI:17948)". www.ebi.ac.uk. Takahama (2016-10-01). "Antioxidative ...
Quercetin, which is found in many foods. Catechol derivatives are found widely in nature. They often arise by hydroxylation of ...
... β-sitosterol-β-D-glucopyranoside and quercetin. "Basanti and the Kosi: How one woman revitalized a watershed in Uttarakhand". ...
Fava d'anta contains astilbin, rutin and quercetin. Wikispecies has information related to Dimorphandra mollis. Wikimedia ...
... quercetin, patuletin, and luteolin; and coumarin. Chamomile, a relative of ragweed, can cause allergy symptoms and can cross- ...
Herzig, J. (1891). "Studien über Quercetin und seine Derivate, VII. Abhandlung" [Studies on Quercetin and its Derivatives, ... Fisetin has roughly twice the senolytic potency as quercetin. A clinical trial in the U.S. was under way as of October 2018 to ... De Santi, C.; Pietrabissa, A.; Mosca, F.; Pacifici, G. M. (2002). "Methylation of quercetin and fisetin, flavonoids widely ... Kashyap D, Garg VK, Tuli HS, Sandhu S (2019). "Fisetin and Quercetin: Promising Flavonoids with Chemopreventive Potential". ...
It is the 3-O-glucoside of quercetin. Isoquercitrin can be isolated from various plant species including Mangifera indica ( ... "Antidiabetic and antioxidative effects of Annona squamosa leaves are possibly mediated through quercetin-3-O-glucoside". ...
It is the 3-O-galactoside of quercetin. Hyperoside has been isolated from Drosera rotundifolia, from the Lamiaceae Stachys sp. ... Quercetin glycosides, Flavonoid galactosides, Kappa-opioid receptor antagonists, Mu-opioid receptor antagonists, Chemicals in ...
The biotransformation of quercetin yields three metabolites, including quercetin 3-O-β-D-glucopyranoside, kaempferol 3-O-β-D- ... Zi, J.; Valiente, J.; Zeng, J.; Zhan, J. (2011). "Metabolism of quercetin by Cunninghamella elegans ATCC 9245". Journal of ...
Other flavanols include quercetin, kaempferol, and isorhamnetin derivatives. The major betacyanins identified in globe amaranth ...
"Protection by quercetin and quercetin 3-O-β-D-glucuronide of peroxynitrite-induced antioxidant consumption in human plasma low- ... Miquelianin (quercetin 3-O-glucuronide) is a flavonol glucuronide, a type of phenolic compound present in wine, in species of ... It is also a rat plasma quercetin metabolite. It shows an antioxidant effect in human plasma. In vitro studies indicate that ... Moon, J. H.; Tsushida, T.; Nakahara, K.; Terao, J. (2001). "Identification of quercetin 3-O-β-D-glucuronide as an antioxidative ...
Olsson, Marie E.; Gustavsson, Karl-Erik; Vågen, Ingunn M. (2010). "Quercetin and Isorhamnetin in Sweet and Red Cultivars of ... Williamson, Gary; Plumb, Geoff W.; Uda, Yasushi; Price, Keith R.; Rhodes, Michael J.C. (1996). "Dietary quercetin glycosides: ... Quercetin glycosides, Flavonol glucosides, All stub articles, Aromatic compound stubs). ...
The major metabolites of orally absorbed quercetin are quercetin-3-glucuronide, 3-methylquercetin-3-glucuronide, and quercetin ... 3-dioxygenase Quercetin 3-O-methyltransferase Quercetin-3-sulfate 3-sulfotransferase Quercetin-3-sulfate 4-sulfotransferase ... Quercetin is the aglycone form of a number of other flavonoid glycosides, such as rutin (also known as quercetin-3-O-rutinoside ... Taken together, the quercetin glucuronides have a half life around 11-12 hours. In rats, quercetin did not undergo any ...
Quercetin is a plant pigment (flavonoid). It is found in many plants and foods and can also be found in supplements. Some ... Quercetin glucuronides but not glucosides are present in human plasma after consumption of quercetin-3-glucoside or quercetin-4 ... Quercetin. Alt Med Rev 1998;3:140-3.. *Shoskes DA, Zeitlin SI, Shahed A, Rajfer J. Quercetin in men with category III chronic ... Taking quercetin with diclofenac might increase the effects and side effects of diclofenac.. Losartan (Cozaar). Quercetin might ...
The Alexandria Times is Alexandrias only locally owned, independent newspaper. We provide the best, most in-depth news reporting in the Port City, as well as first-rate coverage of local sports, arts and entertainment ...
Quercetin. Belonging to the flavonoid family of molecules, quercetin imbues coloring to many foods, including apples, red ... Different doses of quercetin or saline (i.e., controls) were injected into the body cavity one hour after injury and every 12 ... Quercetin binds to this iron, preventing it from reacting with the lipids on neighboring cells. In addition to its antioxidant ... An antioxidant, quercetin scavenges free radicals and inhibits damage-perpetuating, post-injury lipid peroxidation. Basically, ...
Nutrition Nugget While you may know that onions are tasty, versatile and come in different colors you may not be aware of all the healthy compounds beneath their layers or how onions complement other healthy foods. A significant body of research shows when we eat a predominately plant-based diet … [Read more...] about Onions Many Hidden Benefits ...
Order quercetin online for pickup or delivery. Find ingredients, recipes, coupons and more. ... KAL® Quercetin Non-Citrus Bioflavonoid with Antioxidant Activity Dietary Tablets 1000mg. 60 ct ... Find quercetin at a store near you. ... Vitacost Quercetin & Vitamin C Immune Support Capsules. 180 ct ...
Quercetin-3′-O-sulfate, quercetin-4′-O-sulfate, and quercetin-3-O-sulfate as well as quercetin-di-O-sulfate mixture (quercetin- ... Quercetin-3′-O-sulfate was more efficient than quercetin-4′-O-sulfate in DPPH and FCR assays. In contrast, quercetin-4′-O- ... 7,3′-di-O-sulfate, quercetin-7,4′-di-O-sulfate, and quercetin-3′,4′-di-O-sulfate) were synthetized by arylsulfotransferase from ... Although, as expected, the sulfated metabolites were usually less active than quercetin, they remained still effective ...
One recent study evaluated the effectiveness of quercetin, a strong antioxidant with anti-inflammatory properties, in improving ... Why is it important to have quercetin in your body? Below are some of the health benefits that quercetin can offer: *Anti- ... Increase quercetin levels in your body by eating plenty of these healthy foods or you can take a daily quercetin supplement ... inflammatory -- Quercetin works by inhibiting certain chemical pathways from generating inflammation. Taking quercetin can help ...
Quercetin intake resulted in significantly decreased blood pressure in humans. ... CONCLUSION: Quercetin intake resulted in significantly decreased BP in humans. Moreover, participants who consumed quercetin ... STUDY SELECTION: Randomized controlled trials assessing the effects of quercetin or a standardized quercetin-enriched extract ... Substances : Quercetin : CK(1179) : AC(590). Diseases : Hyperlipidemia : CK(1569) : AC(402), Hypertension : CK(6384) : AC(950) ...
quercetin from Neuroscience News features breaking science news from research labs, scientists and colleges around the world. ... Quercetin, a flavonoid found in pickled capers, modulates potassium ion channels in the KCNQ gene family. These channels are ...
... lyase were upregulated after quercetin, methionine, or quercetin plus methionine treatment and a more significant increase was ... Rats were fed for 6 weeks the following diets, that is, control, 0.5% quercetin, 1.0% methionine, and 1.0% ... Serum homocysteine was significantly increased after methionine treatment and decreased after the addition of quercetin. The ... It is concluded that quercetin reduces serum homocysteine by increasing remethylation and transsulfuration of homocysteine in ...
Quercetin Bioflavonoid Immune Support Veggie Capsules 500mg (200 ct) at Ralphs. Find quality health products to add to your ... Jarrow Formulas® Quercetin Bioflavonoid Immune Support Veggie Capsules 500mg. 4.94(. 17. )View All Reviews ...
... with a highly absorbable form of quercetin. Free Shipping! ... Quercetin Complex by Thorne combines bromelain, a compound of ... Quercetin Complex (formerly Quercenase), 60 caps Thorne Quercetin Complex (formerly Quercenase), 60 caps. (No reviews yet) ... Thornes Quercenase combines quercetin phytosome (quercetin bound to sunflower-sourced phospholipids, which increases the ... with a highly absorbable form of quercetin. Quercetin appears to have many beneficial effects on human health, including ...
Heres why you should opt for quercetin phytosome. ... If youre planning on supplementing with quercetin, theres ... Benefits of quercetin phytosome. Now that we know quercetin phytosome is the most innovative and best way to get this ... What is quercetin phytosome? A little refresher, just in case: Quercetin is a potent flavonoid (type of phytonutrient) found in ... quercetin. "On its own, [quercetin] is poorly absorbed and not very bioavailable," Ferira adds. ...
Quercetin benefits include supporting healthy sinus, respiratory, and immune system function. Shop online today. ... Quercetin Quercetin is a natural plant pigment classified as a bioflavonoid. This key dietary antioxidant helps mitigate ... look no further than quercetin.* Quercetin is a plant compound belonging to the family known as flavonoids and is present in ... Learn More About Quercetin Find out why this little known substance is the latest addition to your daily health regime. ...
Optimized Quercetin information including description from Life Extension, supplement facts, and suggested use. Order online ... Optimized Quercetin Description from Life Extension Quercetin is a bioflavonoid found in red grape skins, red onions, apples, ... Quercetin supports immune health. Ours is augmented with vitamin C and camu-camu extract for further immune support.. Optimized ... Quercetin supports healthy cellular function, cardiovascular health and has also been shown to encourage a healthy immune ...
Quercetin is a naturally occurring free radical scaven... ... Now Quercetin With Bromelain - Balanced Immune Response! A ... Decrease quantity for Now Quercetin With Bromelain Increase quantity for Now Quercetin With Bromelain ... Quercetin (As Quercetin Dihydrate) 800mg. Bromelain (2400 GDU/g) 165mg. Other Ingredients: Rice Flour, Hypromellose (cellulose ... Quercetin (As Quercetin Dihydrate) 800mg. Bromelain (2400 GDU/g) 165mg. Other Ingredients: Rice Flour, Hypromellose (cellulose ...
Quercetin plus zinc: I believe in this. Ive been eating black soybeans which are super high in quercetin (the skins) and also ... 55 comments on "Covid-19: Chloroquine, Zinc and Quercetin" * Michael April 7, 2020 Reply ... Ive been taking Quercetin, Zinc, NAC (protects the lining of the lungs), and vitamins C,D,E,K as well as Selenium and ... If you already take quercetin (for allergies) will it push zinc into the cells if you dont have the virus, and is that a good ...
Previous studies have found that quercetin has many effects such as anti-inflammatory, anti-oxidation and anti-cancer. Both in ... Quercetin is a kind of flavonoid compounds that comes from nature and is widely existed in the daily diet. ... vivo and in vitro experiments have demonstrated that quercetin can … ... Quercetin is a kind of flavonoid compounds that comes from nature and is widely existed in the daily diet. Previous studies ...
Green Tea, Quercetin and Cancer STEM cells. Leave a Comment / Uncategorized / By Bradford S. Weeks, MD ... Furthermore, combination of quercetin with EGCG had synergistic inhibitory effects on self-renewal capacity of CSCs through ... inhibits self-renewal capacity of pancreatic CSCs and synergizes with quercetin, a major polyphenol and flavonoid commonly ...
Quercetin is a potent antioxidant found in fruits and vegetables such as dark berries, grapes, and dark leafy greens. Discover ... Supplementing With Quercetin. Although quercetin offers many benefits and it is all-natural, there are a few health ... Quercetin may be your newest go-to supplement! Its shown to have an antihistamine effect. Quercetin influences intracellular ... Benefits of Quercetin. 1. Supports Respiratory Health. When your respiratory system is irritated, redness and swelling can ...
Discover nine remarkable benefits of quercetin for immunity, inflammatory response, weight, pain, exercise performance, skin ... How to choose a quality Quercetin supplement or skin care product.. What is Quercetin?. Quercetin is a flavonoid antioxidant in ... 7: Quercetin May be Helpful for Weight Management. Polyphenols, like Quercetin, Resveratrol (found in wine and red grapes), and ... Quercetin has also demonstrated efficacy in supporting skin health during an allergic reaction. In a study titled: "Quercetin ...
Molecular targets of quercetin with anti-inflammatory properties in atopic dermatitis - 2016 - Drug Discovery Today. ... Therapeutic potential of quercetin as a cardiovascular agent - 2018 - European Journal of Medicinal Chemistry. Hepatoprotective ... Antioxidant and anti-inflammatory activities of quercetin and its derivatives - 2018 - Journal of Functional Foods. ... Activity of Quercetin against Acrylonitrile-Induced Hepatotoxicity in Rats - 2011 - BIOCHEM MOLECULAR TOXICOLOGY ...
... quercetin, 2,6Me-β-CD:quercetin) could be further explored and exploited as small molecule carriers in biological studies. ... Calculations of absolute binding free energies show that quercetin binds favorably to both 2,6Me-β-CD and 2HP-β-CD. MM/GBSA ... Fluorescence spectroscopy shows moderate binding of quercetin in 2HP-β-CD (520 M−1) and 2,6Me-β-CD (770 M−1). Thus, we propose ... Using T1 relaxation experiments and 2D DOSY it was illustrated that both cyclodextrin vehicles can host quercetin. Quantum ...
Biocompatible Nanoparticles for Sustained Topical Delivery of Anticancer Phytoconstituent Quercetin ... Quercetin in anti-diabetic research and strategies for improved quercetin bioavailability using polymer-based carriers - a ... Biocompatible Nanoparticles for Sustained Topical Delivery of Anticancer Phytoconstituent Quercetin. Pakistan Journal of ... Novel cellulose-based amorphous solid dispersions enhance quercetin solution concentrations in vitro. Carbohydrate Polymers ...
Quercetin is a plant pigment (i.e., a flavonoid) found in some fruits, vegetables, and teas. This supplement is healthy, ... Home » Antioxidants » Quercetin: From Prostate Cancer to Heart Disease, Benefits Abound! Quercetin: From Prostate Cancer to ... Quercetin is a plant pigment (i.e., a "flavonoid") found in some fruits, vegetables, and teas. This supplement is healthy", ... The source, form, and amount of quercetin have a huge impact on whether the supplement you take is any good. You can find it in ...
427822 Quercetin and Metabolites Reduce Amyloid -Induced Apoptosis Associated with Alzheimers Disease Wednesday, November 11, ... Polyphenols investigated include quercetin (QUE) and some of its most common metabolites, rhamnetin (RHA), isorhamnetin (IRHA ...
... they can significantly increase their endurance by supplementing with a gram of quercetin per day. ... Quercetin protects athletes from colds and flu. Quercetin may reduce the risk of virus infections in real people, especially if ... Quercetin. Quercetin supplements improve endurance. According to meta-studies, the effect is statistically significant, but ... Gram of quercetin per day gives badminton players more stamina 27.04.2022. Animal study: quercetin enhances stamina after you ...
Haya labs presents the powerful combination of quercetin and bromelain in a dietary food supplement, quercetin with bromelain. ... Haya labs quercetin with bromelain / 120 vcaps , SilaBG.com, Antioxidants, ... The synergy of quercetin and bromelain in Quercetin with Bromelain enhances the absorption and effectiveness of quercetin, ... Haya Labs presents the powerful combination of quercetin and bromelain in a dietary food supplement, Quercetin with Bromelain. ...
  • Clinical trials examining the cardiovascular protective effects of quercetin in humans have reported conflicting results. (greenmedinfo.com)
  • The aim of this systematic review was to summarize evidence of the effects of quercetin supplementation on plasma lipid profiles, blood pressure (BP), and glucose levels in humans by performing a meta-analysis of randomized controlled trials. (greenmedinfo.com)
  • Randomized controlled trials assessing the effects of quercetin or a standardized quercetin-enriched extract on plasma lipid profiles, BP, and glucose levels in humans were eligible for inclusion. (greenmedinfo.com)
  • This study was aimed at investigating the effects of quercetin on mRNA expression and activity of critical enzymes in homocysteine metabolism in rats fed a methionine-enriched diet. (hindawi.com)
  • The beneficial effects of quercetin are likely due to its glucogenic, antioxidant, and anti-inflammatory properties", summarize the Taiwanese. (ergo-log.com)
  • The primary endpoint examines the effects of quercetin on blood inflammatory cytokines and markers of myocardial injury and senescence in this patient population. (frontiersin.org)
  • In the aim to overcome these drawbacks and preserve the cardioprotective effects of quercetin, the present study reports on the preparation of five different Q1 analogs, in which all OH groups were replaced by hydrophobic functional moieties. (cardiff.ac.uk)
  • Quercetin Complex (formerly Quercenase) by Thorne combines bromelain, a compound of protein-digesting enzymes, with a highly absorbable form of quercetin. (longnaturalhealth.com)
  • This solubilized form of quercetin is 25 times more bioavailable than quercetin itself. (taiyointernational.com)
  • Vitamin C and Bio-Quercetin Phytosome is a high-potency vitamin C supplement with an ultra-absorbable form of quercetin, encased in a plant-derived phytosome delivery system. (healthproductsforyou.com)
  • it seems to depend on the form of quercetin you ingest. (medscape.com)
  • More people are awakening to the power and health benefits of quercetin. (naturalnews.com)
  • Benefits of quercetin phytosome. (mindbodygreen.com)
  • In this article, we break down the science behind the health benefits of Quercetin . (gaiaherbs.com)
  • The National Institutes of Health has studied the benefits of quercetin as an antioxidant for cancer treatment and decreasing resistance to drugs. (ultimatefatburner.com)
  • An in-vivo study found that quercetin supplementation slows the metabolism of caffeine to a statistically significant extent in a particular genetic sub-population, but in absolute terms the effect was almost negligible. (wikipedia.org)
  • Effect of quercetin supplementation on plasma lipid profiles, blood pressure, and glucose levels: a systematic review and meta-analysis. (greenmedinfo.com)
  • The mRNA expression of methionine synthase was significantly increased after methionine or methionine plus quercetin supplementation, while its enzymatic activity was significantly increased after methionine plus quercetin supplementation. (hindawi.com)
  • Meanwhile, hepatic ratio of S-adenosylmethionine to S-adenosylhomocysteine was significantly decreased in response to methionine supplementation and normalized after the addition of quercetin. (hindawi.com)
  • A randomized, double-blind, placebo controlled, crossover study evaluated the effect of quercetin supplementation and reported that the participants experienced a stabilization in systolic, diastolic and average arterial pressure. (wakeup-world.com)
  • Quercetin supplementation extended the time that the subjects were able to continue riding during the second more intensive cycling session by 21 percent. (ergo-log.com)
  • Thus, shortterm quercetin supplementation may be considered an effective ergogenic aid for enhancing high-intensity cycling performance among young adults. (ergo-log.com)
  • Recruited patients awaiting CABG surgery at the Montreal Heart Institute (n = 100) will be randomly assigned in a 1:1 ratio to receive either quercetin supplementation (500 mg twice daily) or placebo, starting 2 days before surgery and until the seventh postoperative day. (frontiersin.org)
  • The preventive intake of quercetin supplementation may help limit the vigorous inflammatory response triggered by CABG and subsequent postoperative complications in patients suffering from an acute coronary syndrome. (frontiersin.org)
  • In an exploratory way, quercetin supplementation could also improve endothelial function by eliminating senescent vascular endothelial cells. (frontiersin.org)
  • This global powerhouse is solving many of the common issues associated with quercetin supplementation. (taiyointernational.com)
  • Quercetin is a plant pigment (flavonoid). (medlineplus.gov)
  • Quercetin is a natural plant pigment classified as a bioflavonoid. (naturalfactors.com)
  • Quercetin is a plant pigment (i.e., a "flavonoid") found in some fruits, vegetables, and teas. (ultimatefatburner.com)
  • Quercetin, a water-soluble plant pigment (or, flavonoid), is found in plants and foods and cannot be produced in the human body. (ourkidsasd.com)
  • Increase quercetin levels in your body by eating plenty of these healthy foods or you can take a daily quercetin supplement instead. (naturalnews.com)
  • Put simply: In supplement form, quercetin phytosome is superior for absorption and utilization in the body compared to regular ol' quercetin. (mindbodygreen.com)
  • If you're looking for a supplement that can support free radical scavenging, and helps support healthy sinus, respiratory, and immune system function, look no further than quercetin. (naturalfactors.com)
  • Quercetin may be your newest go-to supplement! (wakeup-world.com)
  • If you're taking any of these, it's probably best to check with your healthcare provider before adding quercetin to the list - especially if you're taking it in supplement form. (wakeup-world.com)
  • How to choose a quality Quercetin supplement or skin care product. (gaiaherbs.com)
  • The source, form, and amount of quercetin have a huge impact on whether the supplement you take is any good. (ultimatefatburner.com)
  • Like many other products in a largely unregulated supplement industry, quercetin products vary greatly in their concentration and quality. (ultimatefatburner.com)
  • Haya Labs presents the powerful combination of quercetin and bromelain in a dietary food supplement, Quercetin with Bromelain . (silabg.com)
  • Haya Labs' Quercetin with Bromelain is a health-boosting supplement that harnesses the combined power of these two natural ingredients. (silabg.com)
  • Whether you're looking to strengthen your immune system, support your respiratory health, or maintain a healthy inflammatory response, Quercetin with Bromelain is a versatile supplement that can help you achieve your health goals. (silabg.com)
  • Taiyo is becoming the next-generation quercetin supplier for formulators in the food, beverage and supplement industries. (taiyointernational.com)
  • Finding the right quercetin supplier can help your food, beverage or supplement excel in this growing marketplace. (taiyointernational.com)
  • Low bioavailability and large effective doses have generally made conventional quercetin formulations ineffective as a dietary supplement, inhibiting repurchase. (taiyointernational.com)
  • This quercetin supplement also promotes cardiovascular health by protecting lipids from oxidation and supports the health of capillaries by enhancing their strength and integrity. (ourkidsasd.com)
  • However, there is a powerful supplement that can help you achieve your goals: quercetin. (magazines2day.com)
  • In addition, quercetin has been shown to improve exercise performance and reduce fatigue, making it a popular supplement among athletes. (magazines2day.com)
  • If you are considering taking a quercetin supplement, it is important to choose a high-quality product from a reputable manufacturer. (magazines2day.com)
  • Look for supplements that contain at least 500mg of quercetin per serving, and make sure the supplement is free from contaminants and additives. (magazines2day.com)
  • If you experience any side effects while taking quercetin, stop taking the supplement and consult with your healthcare provider. (magazines2day.com)
  • By incorporating more quercetin-rich foods into your diet or taking a high-quality quercetin supplement , you can start reaping the benefits of this powerful compound today. (magazines2day.com)
  • In a test tube, it is an antioxidant, which is enough evidence to spawn a small quercetin-as-supplement industry, but there is no convincing evidence that it is medically useful. (medscape.com)
  • Quercetin supplements in the aglycone form are less bioavailable than the quercetin glycoside often found in foods, especially red onions. (wikipedia.org)
  • Quercetin is rapidly metabolized (via glucuronidation) after the ingestion of quercetin foods or supplements. (wikipedia.org)
  • Since its discovery, Quercetin has been studied for a wide range of health benefits-from heart health and exercise recovery to aging and inflammation, and it's a popular ingredient in supplements and skin care . (gaiaherbs.com)
  • Quercetin supplements are right up there, with raw, local honey as a popular go-to during pollen season. (gaiaherbs.com)
  • More studies need to be completed on quercetin supplements before more doctors will recommend its use, however. (ultimatefatburner.com)
  • Quercetin supplements improve endurance. (ergo-log.com)
  • You can also find quercetin supplements at most health food stores. (magazines2day.com)
  • In addition to supplements, there are many foods that are high in quercetin. (magazines2day.com)
  • Of course, if quercetin is really the culprit behind red wine headache, I have some questions: Why aren't the Amazon reviews of quercetin supplements chock full of warnings not to take them with alcohol? (medscape.com)
  • Because research has shown that people who consume more fruits and vegetables have a lower risk of some diseases and lab studies have shown that quercetin has a positive benefit against some cancers. (wakeup-world.com)
  • In addition, a number of studies have shown that quercetin is helpful in the fight against prostate cancer. (prostate.net)
  • Studies have shown that quercetin can help reduce body fat and improve insulin sensitivity, which can lead to weight loss. (magazines2day.com)
  • Studies have shown that quercetin can help increase muscle strength and endurance, as well as improve recovery after exercise. (magazines2day.com)
  • Furthermore, combination of quercetin with EGCG had synergistic inhibitory effects on self-renewal capacity of CSCs through attenuation of TCF/LEF and Gli activities. (weeksmd.com)
  • A combination of quercetin and EGCG synergistically inhibited cell growth and spread, interfered with the cell cycle, and induced cell death in prostate cancer cells. (prostate.net)
  • All in all, these studies and previous ones support the idea of using a combination of quercetin and green tea for prostate cancer. (prostate.net)
  • Quercetin supports healthy cellular function, cardiovascular health and has also been shown to encourage a healthy immune response, especially to seasonally changing environments. (allstarhealth.com)
  • Although Quercetin's main application is for those with allergy symptoms (such as itchy eyes, itchy throat, sneezing and nasal congestion), quercetin also promotes cardiovascular health due to its antioxidant and anti-inflammatory effects. (lifestylemarkets.com)
  • In addition to supporting cardiovascular health, quercetin naturally promotes balanced blood pressure. (wakeup-world.com)
  • Quercetin has been extensively studied for immune support, anti-inflammatory properties, allergy symptom relief, cardiovascular health, exercise performance and muscle function. (taiyointernational.com)
  • Thorne's Quercenase combines quercetin phytosome (quercetin bound to sunflower-sourced phospholipids, which increases the body's ability to absorb the quercetin) and bromelain, a compound of protein-digesting enzymes derived from the pineapple plant. (longnaturalhealth.com)
  • Now Quercetin With Bromelain - Balanced Immune Response! (a1supplements.com)
  • The synergy of quercetin and bromelain in Quercetin with Bromelain enhances the absorption and effectiveness of quercetin, providing a greater health impact. (silabg.com)
  • An antioxidant, quercetin scavenges free radicals and inhibits damage-perpetuating, post-injury lipid peroxidation . (healingtherapies.info)
  • Quercetin appears to have many beneficial effects on human health, including support of the gastrointestinal tract and the cardiovascular system, where it scavenges free radicals. (longnaturalhealth.com)
  • Quercetin is a flavonoid, a supercharged class of antioxidants-which means it can help neutralize free radicals in the body to support a tempered inflammatory response. (mindbodygreen.com)
  • Neutralize free radicals and give your body a boost with our Plant-Based Quercetin. (happybodies.com)
  • Quercetin helps to decrease the action of free radicals and cellular aging. (weface.sg)
  • One recent study evaluated the effectiveness of quercetin, a strong antioxidant with anti-inflammatory properties, in improving the symptoms of rheumatoid arthritis . (naturalnews.com)
  • Several epidemiological studies showed that quercetin intake was inversely associated with the risk of cardiovascular disease, which has been contributed possibly by its antioxidant and anti-inflammatory properties, inhibition of LDL oxidation, and platelet aggregation [ 13 - 15 ]. (hindawi.com)
  • Quercetin is a bioflavonoid found in fruits and vegetables known for its potent antioxidant and anti-inflammatory properties. (silabg.com)
  • On one occasion, the students took 2 capsules containing 500 milligrams of quercetin every day at breakfast for 7 days prior to the session. (ergo-log.com)
  • Vitamin C (non-GMO, corn-derived ascorbic acid), Quercetin dihydrate (supplies Quercetin 230 mg, N-Acetyl Cysteine (NAC), Nettle (Freeze-dried) tops including stinging hairs (Urtica dioica) , pullulan (plant sourced) capsules and nothing else. (oregonswildharvest.com)
  • Quercetin is one of the most abundant dietary flavonoids, with an average daily consumption of 25-50 milligrams. (wikipedia.org)
  • Compared to other flavonoids quercetin is one of the most effective inducers of the phase II detoxification enzymes. (wikipedia.org)
  • Quercetin, a common member of the flavonoids family, is distributed ubiquitously in plant kingdom and rich especially in apples, teas, and onions. (hindawi.com)
  • Quercetin is a plant compound belonging to the family known as flavonoids and is present in numerous fruits, vegetables, and grains. (naturalfactors.com)
  • Some examples of antioxidants include vitamins C, and E, selenium, carotenoids such as Lycopene, and flavonoids such as Quercetin . (gaiaherbs.com)
  • Quercetin, the most abundant of the flavonoids (the name comes from the Latin -quercetum, meaning oak forest, quercus oak) consists of 3 rings and 5 hydroxyl groups. (ncats.io)
  • Quercetin is a member of the class of flavonoids called flavonoles and forms the backbone for many other flavonoids including the citrus flavonoids like rutin, hesperidins, Naringenin and tangeritin. (ncats.io)
  • Quercetin seems to be the most powerful flavonoids for protecting the body against reactive oxygen species, produced during the normal oxygen metabolism or are induced by exogenous damage [9, 10]. (ncats.io)
  • For example, a State University of New York at Buffalo study showed that quercetin significantly inhibited the growth of prostate cancer cell lines and had a positive effect on cancer cell cycles. (prostate.net)
  • Laboratory studies have demonstrated that quercetin can also help to promote normal respiratory function. (a1supplements.com)
  • Quercetin , as you may know, is a bioactive plant compound found in many healthy foods (apples, onions, and tea, to name a few), but if you're planning on supplementing with the potent immunomodulator to receive a more concentrated dose, there's something you should know: Form does matter. (mindbodygreen.com)
  • Quercetin is a bioflavonoid found in red grape skins, red onions, apples, buckwheat and other food sources. (allstarhealth.com)
  • Quercetin belongs to the flavonoid class of antioxidants commonly found in apples, onions and citrus fruits. (lifestylemarkets.com)
  • Quercetin is a flavonoid that is found in many fruits and vegetables, including apples, berries, onions, and broccoli. (magazines2day.com)
  • What Is Quercetin Phytosome? (mindbodygreen.com)
  • Specifically, a form called "quercetin phytosome" reigns supreme. (mindbodygreen.com)
  • Whereas quercetin phytosome is able to penetrate the cell membrane bilayer by strategically featuring hydrophilic (or water-loving) heads and hydrophobic (or water-resisting) tails-that way, the liposome-insulated bioactive (quercetin, in this case) can effectively shimmy its way inside. (mindbodygreen.com)
  • Life Extension Vitamin C and Bio-Quercetin Phytosome Tablets- Vitamin C benefits are enhanced with our new Bio-Quercetin Phytosome, which is up to 50 times more absorbable than standard quercetin. (healthproductsforyou.com)
  • Why choose Vitamin C and Bio-Quercetin Phytosome Tablets? (healthproductsforyou.com)
  • High quality quercetin, derived from a non-citrus plant source, stabilized with additional antioxidants so as not to auto-oxidize (degrade spontaneously). (fullscript.com)
  • Formulating with SunActive IsoQ Improving the bioavailability of quercetin is a highly sought-after benefit to brands formulating high-quality quercetin products seeking to deliver the effective results consumers demand. (taiyointernational.com)
  • The Q-CABG study aims to explore the efficacy of quercetin to reduce inflammation, myocardial injury and senescence in patients undergoing CABG following an acute coronary syndrome. (frontiersin.org)
  • On its own, [quercetin] is poorly absorbed and not very bioavailable," Ferira adds. (mindbodygreen.com)
  • Quercetin has antioxidant and anti-inflammatory effects that might help reduce swelling, kill cancer cells, control blood sugar, and help prevent heart disease. (medlineplus.gov)
  • Anti-inflammatory -- Quercetin works by inhibiting certain chemical pathways from generating inflammation. (naturalnews.com)
  • Asthma treatment -- Since quercetin can reduce the amount of inflammatory or allergic reaction chemicals in the body, it can also reduce the severity of asthma attacks, as well as reduce various forms of congestion that are unrelated to asthma. (naturalnews.com)
  • In fact, one study published in the European Journal of Clinical Nutrition found that supplementing with quercetin 2 helped lower levels of the inflammatory biomarker C-reactive protein (CRP). (mindbodygreen.com)
  • Quercetin can provide relief from headaches and other types of pain, as it inhibits the production of inflammatory signaling molecules by a mechanism similar to that of aspirin. (lifestylemarkets.com)
  • Previous studies have found that quercetin has many effects such as anti-inflammatory, anti-oxidation and anti-cancer. (nih.gov)
  • Much research shows that quercetin is a potent antioxidant that also has anti-inflammatory and anti-allergy properties. (prostate.net)
  • Experimental evidence identified quercetin, a natural senolytic drug, as a cardioprotective agent against inflammatory injuries. (frontiersin.org)
  • Five metabolites (quercetin glucuronides) have been found in human plasma after quercetin ingestion. (wikipedia.org)
  • In contrast, quercetin did undergo extensive phase II (conjugation) to produce metabolites that are more polar than the parent substance and hence are more rapidly excreted from the body. (wikipedia.org)
  • The major metabolites of orally absorbed quercetin are quercetin-3-glucuronide, 3'-methylquercetin-3-glucuronide, and quercetin-3'-sulfate. (wikipedia.org)
  • Polyphenols investigated include quercetin (QUE) and some of its most common metabolites, rhamnetin (RHA), isorhamnetin (IRHA), and tamarixetin (TAM). (confex.com)
  • KGM60 delayed quercetin release and enhanced phenolic metabolites production . (bvsalud.org)
  • Our study indicates that co-encapsulating KGM60 and quercetin in alginate microgel is effective in modulating human gut microbiota and metabolites production potentially beneficial to gut health . (bvsalud.org)
  • Taking quercetin by mouth before exercise doesn't decrease fatigue or improve exercise ability. (medlineplus.gov)
  • Some scientists think that taking quercetin along with certain antibiotics, called quinolone antibiotics, might decrease the effects of these antibiotics. (medlineplus.gov)
  • Quercetin might decrease how quickly the body breaks down cyclosporine. (medlineplus.gov)
  • After the trial, the participants who took quercetin reported a decrease in the incidence of early-morning stiffness, while those in the placebo group reported no significant changes. (naturalnews.com)
  • quercetin will decrease the level or effect of everolimus by P-glycoprotein (MDR1) efflux transporter. (medscape.com)
  • quercetin will decrease the level or effect of amikacin by P-glycoprotein (MDR1) efflux transporter. (medscape.com)
  • The anticancer model's overal antioxidant activity (34.72 µg/mL) was slightly lower than quercetin (30.44 µg/mL) but higher than ascorbic acid (41.68 µg/mL). (who.int)
  • Anti-allergenic -- Quercetin combats histamine in the body, the substance that causes allergic reactions, which makes it an effective reliever from seasonal and food allergies. (naturalnews.com)
  • Quercetin also inhibits the release of histamine from certain immune cells, hence why it is widely used by those who suffer from constant allergies (such as dust) and seasonal allergies (such as hay fever). (lifestylemarkets.com)
  • Quercetin influences intracellular enzymes and may help inhibit histamine release. (wakeup-world.com)
  • The beauty of Quercetin and Nettle (Freeze-dried) is their ability to support your body's normal histamine-producing response. (oregonswildharvest.com)
  • The mRNA expression and enzymatic activity of cystathionine β -synthase and cystathionine γ -lyase were upregulated after quercetin, methionine, or quercetin plus methionine treatment and a more significant increase was observed for hepatic cystathionine β -synthase in the methionine plus quercetin treated rats, suggesting an interaction between methionine and quercetin. (hindawi.com)
  • Well, look no further than the flavonoid quercetin. (wakeup-world.com)
  • Inhibition of prostate cancer cell colony formation by the flavonoid quercetin correlates with modulation of specific regulatory genes. (prostate.net)
  • A methyl metabolite of quercetin has been shown in vitro to be more effective than quercetin at inhibiting lipopolysaccharide-activated macrophages. (wikipedia.org)
  • In-vitro studies show that quercetin is a strong inhibitor of the cytochrome P450 enzymes CYP3A4 and CYP2C19 and a moderate inhibitor of CYP2D6. (wikipedia.org)
  • Both in vivo and in vitro experiments have demonstrated that quercetin can exert anti-tumor effects by altering cell cycle progression, inhibiting cell proliferation, promoting apoptosis, inhibiting angiogenesis and metastasis progression, and affecting autophagy. (nih.gov)
  • Electrospray alginate microgels co-encapsulating degraded Konjac glucomannan and quercetin modulate human gut microbiota in vitro. (bvsalud.org)
  • Quercetin is a plant flavonol from the flavonoid group of polyphenols. (wikipedia.org)
  • Eriodictyol is then converted into dihydroquercetin with flavanone 3-hydroxylase, which is then converted into quercetin using flavonol synthase. (wikipedia.org)
  • The antihypertensive flavonol quercetin (Q1) is endowed with a cardioprotective effect against myocardial ischemic damage. (cardiff.ac.uk)
  • Ingestion with high-fat foods may increase bioavailability compared to ingestion with low-fat foods, and carbohydrate-rich foods may increase absorption of quercetin by stimulating gastrointestinal motility and colonic fermentation. (wikipedia.org)
  • The] liposome is a bioavailability technology or tool to help chauffeur, if you will, an active (in this case, quercetin) into the body via the gut and into your cells to be used," mbg director of scientific affairs Ashley Jordan Ferira, Ph.D., RDN, explains on the mindbodygreen podcast . (mindbodygreen.com)
  • Improving the bioavailability of quercetin is a highly sought-after benefit to brands trying to formulate with quercetin and consumers who want effective results and smaller pills. (taiyointernational.com)
  • This high bioavailability is achieved through an encapsulated matrix that makes it completely water soluble, enabling it to reach the gut where it is converted to quercetin and rapidly absorbed by the gut lining. (taiyointernational.com)
  • Plus, SunActive® IsoQ's higher bioavailability allows for smaller doses to deliver desired quercetin benefits. (taiyointernational.com)
  • Some studies suggest a bioavailability of less than 1% , which basically means none and should probably put the quercetin hypothesis to bed. (medscape.com)
  • In red onions, higher concentrations of quercetin occur in the outermost rings and in the part closest to the root, the latter being the part of the plant with the highest concentration. (wikipedia.org)
  • Quercetin is the aglycone form of a number of other flavonoid glycosides, such as rutin (also known as quercetin-3-O-rutinoside) and quercitrin, found in citrus fruit, buckwheat and onions. (wikipedia.org)
  • red onions and kale are common foods containing appreciable amounts of quercetin. (weface.sg)
  • In rats, quercetin did not undergo any significant phase I metabolism. (wikipedia.org)
  • Dr. E. Schultke and colleagues (2003, Canada) assessed the impact of treating experimentally injured rats with quercetin. (healingtherapies.info)
  • Although no control animals regained sufficient hind-limb function to walk, approximately 50% of the rats treated with twice-daily doses of quercetin over three or ten days were able to walk. (healingtherapies.info)
  • In general, the rats that were treated with quercetin for a longer duration recovered more function. (healingtherapies.info)
  • Compared to controls, more spinal-cord tissue was preserved in the quercetin-treated rats. (healingtherapies.info)
  • Rats were fed for 6 weeks the following diets, that is, control, 0.5% quercetin, 1.0% methionine, and 1.0% methionine plus 0.5% quercetin diets. (hindawi.com)
  • It is concluded that quercetin reduces serum homocysteine by increasing remethylation and transsulfuration of homocysteine in rats exposed to a methionine-enriched diet. (hindawi.com)
  • The major enzymes, constituting the first line of defence, directly involved in the neutralization of ROS/RNS are: superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) The second line of defence is represented by radical scavenging antioxidants such as vitamin C, vitamin A and plant phytochemicals including quercetin that inhibit the oxidation chain initiation and prevent chain propagation. (ncats.io)
  • This update discusses the neuroprotective potential of two other nutritional approaches: quercetin and vitamin E. (healingtherapies.info)
  • Like quercetin, vitamin E is an antioxidant that protects neuronal membranes from lipid-peroxidation. (healingtherapies.info)
  • Quercetin is a flavonoid that complements vitamin C health benefits. (healthproductsforyou.com)
  • Quercetin intake resulted in significantly decreased blood pressure in humans. (greenmedinfo.com)
  • In addition, quercetin has been shown to suppress appetite and reduce calorie intake, which can also help with weight loss. (magazines2day.com)
  • Sulfated quercetin derivatives are important authentic standards for metabolic studies. (mdpi.com)
  • Not to mention, quercetin acts as a zinc shuttle, getting zinc into cells," says Vincent Pedre, M.D., board-certified internist. (mindbodygreen.com)
  • Most quercetin products are not water soluble because quercetin itself is not soluble. (taiyointernational.com)
  • Quercetin supports immune health. (allstarhealth.com)
  • Quercetin is known to support heart health, as well as encouraging blood flow. (wakeup-world.com)
  • Although quercetin offers many benefits and it is all-natural, there are a few health considerations. (wakeup-world.com)
  • Red wine, berries, or tea's health benefits are all superfoods that contain Quercetin. (gaiaherbs.com)
  • As an antioxidant, Quercetin has demonstrated beneficial effects on cell health and supporting normal inflammation. (gaiaherbs.com)
  • What are quercetin health benefits? (prostate.net)
  • Quercetin has been used for thousands of years in traditional medicine to treat a variety of ailments, and it is now gaining recognition for its many health benefits. (magazines2day.com)
  • Quercetin has been shown to have numerous health benefits, including reducing inflammation, improving heart health, and boosting the immune system. (magazines2day.com)
  • Quercetin forms the glycosides quercitrin and rutin together with rhamnose and rutinose, respectively. (wikipedia.org)
  • The results pointed squarely at quercetin , and particularly its metabolite quercetin glucuronide, which, at 20 micromolar concentrations, inhibited about 80% of ALDH activity. (medscape.com)
  • Kjo e bën sonication metodën e preferuar për izolimin e komponimeve bioaktive të ndjeshme të tilla si polyphenols, quercetin, ose antioksidantë nga botanicals. (hielscher.com)
  • Quercetin has been safely used in doses up to 1 gram daily for 12 weeks. (medlineplus.gov)
  • Different doses of quercetin or saline (i.e., controls) were injected into the body cavity one hour after injury and every 12 hours thereafter for either 4 or 10 days. (healingtherapies.info)
  • While the average person is thought to consume 10-100 mg of quercetin through food daily, this formula delivers 500 mg per vegetarian capsule to give you maximum quercetin benefits. (naturalfactors.com)
  • The researchers also noted improved inflammation markers and ESR levels in the quercetin group. (naturalnews.com)
  • Quercetin caused a relaxation of the airway smooth muscle, leading researchers to suggest it may offer therapeutic solutions for persons suffering from upper respiratory conditions. (wakeup-world.com)
  • One study found that organically grown tomatoes had 79% more quercetin than non-organically grown fruit. (wikipedia.org)
  • CTN-986 is a quercetin derivative found in cottonseeds and cottonseed oil. (wikipedia.org)
  • Quercetin, a flavonoid found in pickled capers, modulates potassium ion channels in the KCNQ gene family. (neurosciencenews.com)
  • A little refresher, just in case: Quercetin is a potent flavonoid (type of phytonutrient) found in a bunch of fruits, vegetables, nuts, and grains (here's our master list of quercetin-rich foods ). (mindbodygreen.com)
  • Quercetin is a naturally occurring antioxidant commonly found in fruits and vegetables, including dark berries, grapes, and dark leafy greens! (wakeup-world.com)
  • The objectives of this study were to examine the molecular mechanisms by which (-)-epigallocatechin-3-gallate (EGCG), an active compound in green tea, inhibits self-renewal capacity of pancreatic CSCs and synergizes with quercetin, a major polyphenol and flavonoid commonly detected in many fruits and vegetables. (weeksmd.com)
  • They wondered what would happen if they added quercetin to EGCG in prostate cancer cells in the laboratory: could the quercetin stimulate the ability of EGCG to fight the growth and spread of prostate cancer cells? (prostate.net)
  • We say "potential" since the scientists tested quercetin and EGCG on lung, kidney, and liver cells rather than prostate cancer cells. (prostate.net)
  • However, when quercetin and green tea were given to severely immunodeficient mice for two weeks, the scientists saw a significant increase in active EGCG in lung and kidney cells and an improvement in liver cells. (prostate.net)
  • The authors pointed out that combining quercetin and green tea enhanced the cancer fighting abilities of green tea (EGCG) and that "responses of different cancers to the combination may vary. (prostate.net)
  • Four of the five hydroxyl groups of quercetin are glucuronidated by UDP-glucuronosyltransferase. (wikipedia.org)
  • This review summarizes the evidence for the pharmacological potential and inhibition of quercetin on cancers, supporting the viewpoint that quercetin should be adequately considered as a therapeutic agent against various cancers. (nih.gov)
  • The findings of the study indicate that quercetin has beneficial effects on rheumatoid arthritis symptoms. (naturalnews.com)
  • Most people, however, should be able to enjoy dietary quercetin (fruits and vegetables) without a concern. (wakeup-world.com)
  • Quercetin is a naturally occurring free radical scavenger that supports healthy seasonal immune system function. (a1supplements.com)
  • Quercetin is a flavonoid antioxidant in various types of deeply colored fruits, vegetables, and herbs, such as berries and leafy green vegetables. (gaiaherbs.com)