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Effects of quercetin on cell differentiation and adipogenesis in 3T3-L1 adipocytes

Hong SY, Ha AW, Kim W

BACKGROUND/OBJECTIVES: Adipocytes undergo angiogenesis to receive nutrients and oxygen needed for adipocyte' growth and differentiation. No study relating quercetin with angiogenesis in adipocytes exists. Therefore, this study investigated the role...
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Quercetin attenuates the reduction of parvalbumin in middle cerebral artery occlusion animal model

Park DJ, Kang JB, Shah FA, Koh PO

Background: Calcium is a critical factor involved in modulation of essential cellular functions. Parvalbumin is a calcium buffering protein that regulates intracellular calcium concentrations. It prevents rises in calcium concentrations...
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Effects of Quercetin Supplementation on Hematological Parameters in Non-Alcoholic Fatty Liver Disease: a Randomized, Double-Blind, Placebo-Controlled Pilot Study

Pasdar Y, Oubari F, Zarif MN, Abbasi M, Pourmahmoudi A, Hosseinikia M

Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease which has become a public health concern. Since oxidative stress plays a crucial role in the pathogenesis of NAFLD,...
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Quercetin-induced apoptosis ameliorates vascular smooth muscle cell senescence through AMP-activated protein kinase signaling pathway

Kim SG, Sung JY, Kim JR, Choi HC

Aging is one of the risk factors for the development of cardiovascular diseases. During the progression of cellular senescence, cells enter a state of irreversible growth arrest and display resistance...
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Onion peel extract and its constituent, quercetin inhibits human Slo3 in a pH and calcium dependent manner

Wijerathne TD, Kim JH, Kim MJ, Kim CY, Chae MR, Lee SW, Lee KP

Sperm function and male fertility are closely related to pH dependent K⁺ current (KSper) in human sperm, which is most likely composed of Slo3 and its auxiliary subunit leucine-rich repeat-containing...
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Effect of quercetin on the anti-tumor activity of cisplatin in EMT6 breast tumor-bearing mice

Liu H, Lee JI, Ahn TG

OBJECTIVE: The purpose of this study was to determine the effect of quercetin on the antitumor activity of cisplatin and its side-effects. METHODS: EMT6 cells, a mouse breast cancer cell line,...
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Quercetin Upregulates Uncoupling Protein 1 in White/Brown Adipose Tissues through Sympathetic Stimulation

Choi H, Kim CS, Yu R

BACKGROUND: Uncoupling protein 1 (UCP1) plays an important role in increasing energy expenditure; thus, it is being considered as a new target for preventing obesity and metabolic complications. In this...
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Anti-Diabetic Effect of Cotreatment with Quercetin and Resveratrol in Streptozotocin-Induced Diabetic Rats

Yang DK, Kang HS

Quercetin and resveratrol are known to have beneficial effects on the diabetes and diabetic complication, however, the effects of combined treatment of these compounds on diabetes are not fully revealed....
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Quercetin induces cell death in cervical cancer by reducing O-GlcNAcylation of adenosine monophosphate-activated protein kinase

Ali A, Kim MJ, Kim MY, Lee HJ, Roh GS, Kim HJ, Cho GJ, Choi WS

Hyper-O-GlcNAcylation is a general feature of cancer which contributes to various cancer phenotypes, including cell proliferation and cell growth. Quercetin, a naturally occurring dietary flavonoid, has been reported to reduce...
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Comparative Effects of Dietary Quercetin and Rutin in Rats Fed with the Lieber-DeCarli Ethanol Diet

Seo SJ, Park CH, Ko IY, Jeong YH, Choi YS

Flavonoids including quercetin and rutin are a group of naturally occurring compounds widely distributed in plants, especially in buckwheat. Thus, cereal and the leaf of the plant have increasingly used...
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Quercetin Relaxed the Smooth Muscle of Rabbit Penile Corpus Cavernosum by Activating the NO-cGMP Signaling Pathway

Choi BR, Kim HK, Park JK

The aim of this study was to investigate the effect and action mechanism of quercetin on penile corpus cavernosum smooth muscle (PCCSM). PCCSM precontracted with phenylephrine (Phe) was treated with...
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Effects of Quercetin and Mannitol on Erythropoietin Levels in Rats Following Acute Severe Traumatic Brain Injury

Kalemci O, Aydin HE, Kizmazoglu C, Kaya I, Yılmaz H, Arda NM

OBJECTIVE: The aim of this study to investigate the normal values of erythropoietin (EPO) and neuroprotective effects of quercetin and mannitol on EPO and hematocrit levels after acute severe traumatic...
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Quercetin induces apoptosis and cell cycle arrest in triple-negative breast cancer cells through modulation of Foxo3a activity

Nguyen LT, Lee YH, Sharma AR, Park JB, Jagga S, Sharma G, Lee SS, Nam JS

Quercetin, a plant-derived flavonoid found in fruits, vegetables and tea, has been known to possess bioactive properties such as anti-oxidant, anti-inflammatory and anti-cancer. In this study, anti-cancer effect of quercetin...
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Quercetin attenuates the injury-induced reduction of γ-enolase expression in a middle cerebral artery occlusion animal model

Jeon SJ, Kim MO, Ali-Shah F, Koh PO

Quercetin, a natural flavonoid, copiously exists in vegetable, fruits and tea. Quercetin is beneficial to neurodegenerative disorders via its strong anti-oxidant and anti-inflammatory activities. γ-Enolase is one of the enzymes...
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Differential Effects of Quercetin and Quercetin Glycosides on Human α7 Nicotinic Acetylcholine Receptor-Mediated Ion Currents

Lee BH, Choi SH, Kim HJ, Jung SW, Hwang SH, Pyo MK, Rhim H, Kim HC, Kim HK, Lee SM, Nah SY

Quercetin is a flavonoid usually found in fruits and vegetables. Aside from its antioxidative effects, quercetin, like other flavonoids, has a various neuropharmacological actions. Quercetin-3-O-rhamnoside (Rham1), quercetin-3-O-rutinoside (Rutin), and quercetin-3-(2(G)-rhamnosylrutinoside...
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Quercetin induces cell death by caspase-dependent and p38 MAPK pathway in EGFR mutant lung cancer cells

Lim EJ, Heo J, Kim YH

OBJECTIVES: The aim of this study was whether quercetin induces cell death by caspase and MAPK signaling pathway in EGFR mutant lung cancer cells. METHODS: PC-9 cells, EGFR mutant lung cancer...
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Onion peel extract reduces the percentage of body fat in overweight and obese subjects: a 12-week, randomized, double-blind, placebo-controlled study

Lee JS, Cha YJ, Lee KH, Yim JE

BACKGROUND/OBJECTIVES: The anti-obesity effect of quercetin-rich onion peel extract (OPE) was suggested in rats, but information from human studies is limited. This study aimed to investigate the effects of OPE...
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Quercetin Directly Interacts with Vitamin D Receptor (VDR): Structural Implication of VDR Activation by Quercetin

Lee KY, Choi HS, Choi HS, Chung KY, Lee BJ, Maeng HJ, Seo MD

The vitamin D receptor (VDR) is a member of the nuclear receptor (NR) superfamily. The VDR binds to active vitamin D3 metabolites, which stimulates downstream transduction signaling involved in various...
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Direct vascular actions of quercetin in aorta from renal hypertensive rats

Choi S, Ryu KH, Park SH, Jun JY, Shin BC, Chung JH, Yeum CH

BACKGROUND: Chronic treatment with the dietary flavonoid quercetin is known to lower blood pressure and restore endothelial dysfunction in animal models of hypertension. This study investigated the direct effects of...
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Induction of heme oxygenase-1 with dietary quercetin reduces obesity-induced hepatic inflammation through macrophage phenotype switching

Kim CS, Choi HS, Joe Y, Chung HT, Yu R

BACKGROUND/OBJECTIVES: Obesity-induced steatohepatitis accompanied by activated hepatic macrophages/Kupffer cells facilitates the progression of hepatic fibrinogenesis and exacerbates metabolic derangements such as insulin resistance. Heme oxyganase-1 (HO-1) modulates tissue macrophage phenotypes...
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