Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 


 
 Table of Contents  
REVIEW ARTICLE
Year : 2017  |  Volume : 30  |  Issue : 4  |  Page : 978-983

Effect of quercetin treatment on hyperuricemic renal dysfunctions and hemodynamic parameters


1 Department of Physiology, Faculty of Medicine, Menoufia University, Menoufia, Egypt
2 Department of Pathology, Faculty of Medicine, Menoufia University, Menoufia, Egypt

Date of Submission22-Mar-2017
Date of Acceptance23-Apr-2017
Date of Web Publication04-Apr-2018

Correspondence Address:
Heba F El-Domiaty
Department of Physiology, Faculty of Medicine, Menoufia University, Menoufia 32511
Egypt
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/mmj.mmj_220_17

Rights and Permissions
  Abstract 


Objective
The aim of this study was to assess the potential effect of quercetin treatment on hyperuricemic renal dysfunctions and hemodynamic changes in in vivo and in vitro published studies.
Materials and methods
Data were obtained from Medline databases (PubMed, Medscape, ScienceDirect.) and all materials available in the internet from 2001 to 2016. The initial search presented 170 articles, of which 47 met the inclusion criteria. The articles studied the effect of quercetin treatment on hyperuricemic renal dysfunctions and hemodynamic changes. If the studies did not fulfill the inclusion criteria, they were excluded. Study quality assessment included whether ethical approval was gained, eligibility criteria specified, appropriate controls, adequate information, and defined assessment measures. Comparisons were made using structured review with the results tabulated.
Findings
In total 47 potentially relevant publications were included. There was an association between hyperuricemia and renal function impairment together with deterioration of hemodynamic parameters. This association was due to hyperuricemic vascular endothelial dysfunction and oxidative stress. Studies concerned with quercetin treatment found that quercetin was able to improve hyperuricemic renal functions and hemodynamic parameter mainly due to its antioxidant effect.
Conclusion
Quercetin treatment improved hyperuricemic renal dysfunctions and hemodynamic parameters.

Keywords: hyperuricemia, oxidative stress, quercetin


How to cite this article:
El-Hamid Saleh SA, Youssef GS, El-Samea Aiad HA, Al-Kotb SM, Donia SS, El-Domiaty HF. Effect of quercetin treatment on hyperuricemic renal dysfunctions and hemodynamic parameters. Menoufia Med J 2017;30:978-83

How to cite this URL:
El-Hamid Saleh SA, Youssef GS, El-Samea Aiad HA, Al-Kotb SM, Donia SS, El-Domiaty HF. Effect of quercetin treatment on hyperuricemic renal dysfunctions and hemodynamic parameters. Menoufia Med J [serial online] 2017 [cited 2024 Mar 28];30:978-83. Available from: http://www.mmj.eg.net/text.asp?2017/30/4/978/229209




  Introduction Top


Uric acid (UA) is the end product of purine metabolism in humans. It is produced from hypoxanthine and xanthine through the action of the enzyme xanthine oxidase (XO)[1]. Hyperuricemia is likely a cause or exacerbating factor of hypertension and progressive kidney disease. Experimental studies demonstrated that experimental hyperuricemic hypertension is associated with inflammation, renal microvascular damage, and renal vasoconstriction[2]. The mechanisms underlying the organ damage caused by UA are not completely understood, but many reports have indicated that endothelial dysfunction and oxidative stress play an important role in affecting cardiovascular and renal function[3].

Allopurinol is the only XO inhibitor under the clinical application and has served as a dominant UA-lowering agent in the past four decades[4]. However, some severe adverse effects such as hepatitis, nephropathy, and allergic reactions limit the clinical use of allopurinol. Therefore, the use of alternative approaches to lower UA has been suggested[5].

Quercetin (3,3',4', 5, 7 pentahydroxy flavone) belongs to the family of flavonoids[6]. It prevents the oxidation of low density lipoproteins[7]. Some studies showed that it has a vascular protective effect against diabetes-induced vascular impairment, through the preservation of endothelium-derived nitric oxide (NO)[6].

The aim of this study was to assess the effect of quercetin treatment on hyperuricemic renal dysfunctions and hemodynamic changes and the underlying possible mechanisms.


  Materials and Methods Top


Search strategy

We reviewed papers on the effect of quercetin treatment on renal functions and hemodynamics in hyperuricemia from Medline databases (PubMed, Medscape, ScienceDirect) and also from materials available in the internet from 2001 to 2016. We used hyperuricemia/quercetin/hyperuricemic rats/renal dysfunction/endothelial dysfunction/antioxidant, and oxidative stress as searching terms.

Study selection

All studies were independently assessed for inclusion. They were included if they fulfilled the following criteria.

Inclusion criteria of the published studies were as follows:

  • Published in English language
  • Published in peer-reviewed journals
  • Focused on hyperuricemic renal dysfunction and protective effect of quercetin
  • If a study had several publications on certain aspects we used the latest publication giving the most relevant data.


Data extraction

If the studies did not fulfill the above criteria, they were excluded.

Quality assessment

The quality of all studies was assessed. Important factors included study design, attainment of ethical approval, evidence of a power calculation, specified eligibility criteria, appropriate controls, adequate information, and specified assessment measures. It was expected that confounding factors would be reported and controlled for and appropriate data analysis made in addition to an explanation of missing data.

Data synthesis

A structured systematic review was performed with the results tabulated.


  Results Top


Effect of hyperuricemia on renal functions

The effects of hyperuricemia on renal functions were investigated in five animal and 10 human studies [Figure 1].
Figure 1: Flow chart of study selection.

Click here to view


All eight animal studies [Table 1] [7–11] investigating the effect of hyperuricemia on renal functions found that hyperuricemia affects renal functions in the form of elevation of serum urea and creatinine with reduction in glomerular filtration rate (GFR). As regards human studies [Table 2] [12–21], they reported that hyperuricemia was associated with a decline in kidney functions.
Table 1: Animal studies investigating the effect of hyperuricemia on renal function

Click here to view
Table 2: Human studies investigating the effect of hyperuricemia on renal function

Click here to view


Effect of hyperuricemia on renal hemodynamics

The effects of hyperuricemia on renal hemodynamics were investigated in three animal studies [Table 3] [2],[22],[23]. All of these studies found that hyperuricemia caused a reduction in renal blood flow and elevation in renal vascular resistance (RVR) including afferent and efferent arteriolar resistance.
Table 3: Animal studies investigating the effect of hyperuricemia on renal hemodynamics

Click here to view


Effect of hyperuricemia on arterial blood pressure

The effects of hyperuricemia on arterial blood pressure (ABP) were investigated in five animal and four human studies. They all showed elevation in ABP due to hyperuricemia.

Animal studies [Table 4] [2],[11],[24],[25],[26] were performed on rats and identified that hyperuricemic rats had elevated blood pressure.
Table 4: Animals studies investigating the effects of hyperuricemia on arterial blood pressure

Click here to view


As regards human studies [Table 5] [18],[21],[27],[28], which included one cohort study, one cross-sectional study, and two systematic review, an association between hyperuricemia and hypertension was found.
Table 5: Human studies investigating the effect of hyperuricemia on arterial blood pressure

Click here to view


Effect of quercetin on renal functions and renal hemodynamics in hyperuricemia

The effect of quercetin treatment on hyperuricemic renal dysfunction was investigated only in animal studies [Table 6]. There are three animal studies, which studied effect of quercetin on renal functions [29–31]. However, only one animal study studied the effect of quercetin on hemodynamic parameters[32] and one animal study investigated the effect of antioxidant agent on renal function and hemodynamics together[2]. All of these studies found that quercetin had a renoprotective effect.
Table 6: Animal studies investigating the effect of quercetin on hyperuricemic renal dysfunction, and renal hemodynamics

Click here to view


Effect of quercetin on arterial blood pressure

There are seven studies concerned with the effect of quercetin on ABP [Table 7] [33–39]. Only one of these studies was a systematic review. The remaining six studies were animal studies, which indicated that quercetin has the ability to reduce the elevated blood pressure.
Table 7: Animal studies investigating the effects of quercetin on hyperuricemic hypertension

Click here to view



  Discussion Top


Hyperuricemia has been linked to cardiovascular and renal diseases, possibly through the generation of reactive oxygen species (ROS) and subsequent endothelial dysfunction[18]. The enzymatic effect of XO is the production of ROS and UA. Studies have shown that inhibiting XO can reverse endothelial dysfunction[40].

Elevated serum UA levels decrease the renal blood flow and the GFR as demonstrated by many studies. Kensara[8] demonstrated that mild elevation in serum UA increased serum levels of creatinine and blood urea nitrogen with marked tubulointerstitial inflammation in the kidneys of hyperuricemic rats. Furthermore, Kang et al.[7] studied the possibility of contribution of hyperuricemia in the progression of renal damage in the remnant kidney model. Rats developed hyperuricemia and showed greater proteinuria and higher serum creatinine compared with control rats. According to Fei et al.[10], hyperuricemia was accompanied by an elevation in blood urea nitrogen and serum creatinine and decreased urinary creatinine indicating reduced urea and creatinine clearance. Moreover, the studies performed by Bellomo et al.[13] and Sedaghat et al.[27] showed that high levels of serum UA were associated with faster decline in eGFR and increased incidence of chronic kidney disease.

Vascular and endothelial functions are known to have a major role in driving chronic kidney disease[41]. The potential mechanism involves two-step process. The early mechanism as demonstrated by Sanchez-Lozada et al.[23] was that hyperuricemia caused renal vasoconstriction mediated by endothelial dysfunction resulting from a reduction in endothelial levels of NO and activation of the renin angiotensin system[42]. In addition, Mazzali et al.[24] demonstrated that UA has some direct effects on endothelial and smooth muscle cells of the vascular wall, which ultimately lead to endothelial dysfunction and afferent renal arteriolopathy. Sánchez-Lozada et al.[3] have found that afferent renal arteriolopathy could potentiate the renal injury by causing ischemia to the postglomerular circulation. The decrease in lumen also could provide a stimulus for the increase in renin expression, and also might contribute to the development of the marked hypertension. Furthermore, there is evidence that the arteriolopathy also leads to ineffective autoregulation and increased transmission of systemic pressures to the glomerulus, which also can potentiate renal damage[23].

Antioxidant treatment successfully prevented the increment in blood pressure, intrarenal oxidative stress, and the renal hemodynamic alterations associated with increased levels of UA. El-Kotb and Galal[22] also reported that the treatment of hyperuricemic rats with antioxidant caused a significant increase in renal blood flow and decreased RVR by its ability to scavenger ROS and thus improves renal circulation.

Plant-derived substances with antioxidant activity such as quercetin prevented hyperuricemia by altering the expression and activity of various UA transporters[43]. It has been shown that, in order to exert deleterious effects, UA depends on its intracellular concentration. In this context, the regulation of UA transporters is of great importance. Verzola et al.[44] showed that URAT1 is fundamental for UA to enter into proximal tubular cells and induce intracellular oxidative stress. Direct hemodynamic effects of quercetin may also be invoked to explain its effect in the maintenance of GFR through the preservation of blood supply to the kidney[31]. A possible explanation for the hemodynamic effects of quercetin is a reduction in RVR either through (i) a direct ROS scavenger effect and, particularly, to a diminished superoxide-driven NO inactivation or by (ii) potentiating the bioavailability and the biological activity of NO as a major regulatory factor of renal hemodynamics[31].

Evidence exists to support several potential mechanisms whereby quercetin might decrease blood pressure and decrease the severity of hypertension in animals and humans. These mechanisms cause a decrease in oxidative stress, interfere with the renin–angiotensin–aldosterone system, and/or improve vascular function in an endothelium-dependent or endothelium-independent manner[45].

Many studies found that a decrease in blood pressure in hypertensive animals and humans treated with quercetin is due to a decrease in oxidative stress. Yamamoto and Oue[34] found that treatment of spontaneously hypertensive rats with quercetin improved endothelium-dependent vasorelaxation of aortic segments and decreased systolic blood pressure by 18%. Because indices of oxidative stress (e.g., urinary F2 isoprostane and plasma malondialdehyde) were lowered after quercetin treatment, the improvement in endothelial function was attributed to the antioxidant effect of quercetin[45]. Moreover, quercetin has been shown to inhibit angiotensin-converting enzyme (ACE) in vitro, through its ability to chelate metal ions such as zinc[35]. Häckl et al.[36] demonstrated that both oral and intravenous administration of quercetin in Wistar rats attenuates the increase in blood pressure evoked by intravenous infusion of angiotensin-I. This study also reported a 31% decrease in ACE activity after quercetin treatment compared with baseline, suggesting that quercetin acted as an ACE inhibitor. Mackraj et al.[37] provided another potential mechanism for the long-term blood pressure-lowering effects of quercetin through the downregulation of the angiotensin-I receptor in the kidney, increased urine volume, and increased urinary sodium excretion.

Quercetin was also postulated to decrease blood pressure in rodents and was accompanied by improvements in endothelial function[45]. For example, Duarte et al.[38] reported that spontaneously hypertensive rats given 10 mg quercetin/kg body weight (through gavage) have improved endothelium-dependent vasorelaxation in isolated aorta and decreased blood pressure. Similar results have been found when quercetin is administered to rats with hypertension that is produced by NO synthase inhibition[39]. Using a dietary model of hypertension (high-fat, high-sucrose diet for 4 weeks), Yamamoto and Oue[34] observed hypertension, low aortic NO synthase activity, and low urinary NO metabolites, all of which were reversed by quercetin consumption. Collectively, these studies provide evidence that one potential mechanism through which quercetin can decrease blood pressure is through improved endothelial function evoked by increased NO bioavailability and/or NO production[45]. Moreover, Sanchez-Gonzalez et al.[31] postulated that improvement in endothelial function by quercetin was due to enhanced endothelial nitric oxide synthase activity and reduced activity of NADPH oxidase. They concluded that quercetin decreased vascular levels of O2, which might be due to its ability to scavenge ROS, regulate enzymes that generate free radicals, such as NADPH oxidase, and regulate antioxidant enzymes, including superoxide dismutase, which metabolize free radicals.

Quercetin also might act directly on vascular smooth muscle (VSM). Perez-Vizcaino et al.[46] reported that quercetin and isorhamnetin (quercetin metabolite) induced vasorelaxation of rat aortic rings similarly regardless of whether the endothelial layer of vessels was intact or denuded. Likewise, Rendig et al.[47] found that the enhanced vasorelaxation in resistance and conductance rabbit vessels after quercetin treatment was independent of the presence of the endothelium. How quercetin acts on the VSM is not clear, but it has been speculated that vasodilation may result from inhibition of protein kinases involved in the Ca 2+ sensitizing mechanisms responsible for smooth muscle contraction[45].


  Conclusion Top


Quercetin treatment can improve renal functions in hyperuricemic patients due to its hypouricemic, antioxidant, and vascular protective effects.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
  References Top

1.
Gustafsson D, Unwin R. The pathophysiology of hyperuricaemia and its possible relationship to cardiovascular disease, morbidity and mortality. BMC Nephrol 2013; 14:164.  Back to cited text no. 1
    
2.
Cristóbal-García M, García-Arroyo FE, Tapia E, et al. Renal oxidative stress induced by long-term hyperuricemia alters mitochondrial function and maintains systemic hypertension. Oxid Med Cell Longev 2015; 2015:535686.  Back to cited text no. 2
    
3.
Sánchez-Lozada LG, Lanaspa-García M, Cristóbal-García M, et al. Uric acid-induced endothelial dysfunction is associated with mitochondrial changes and reduced intracellular ATP concentrations. Nephron Exp Nephrol 2012; 121:71–80.  Back to cited text no. 3
    
4.
Haidari F, Keshavarz SA, Shahi MM, Mahboob SA, Rashidi MR. Effects of Parsley (Petroselinum crispum) and its flavonol constituents, kaempferol and quercetin, on serum uric acid levels, biomarkers of oxidative stress and liver xanthine oxidoreductase aactivity in oxonate-induced hyperuricemic rats. Iran J Pharm Res 2011; 10:811–819.  Back to cited text no. 4
    
5.
Juraschek SP, Miller ER, Gelber AC. Effect of oral vitamin C supplementation on serum uric acid. A meta-analysis of randomized controlled trials. Arthritis Care Res (Hoboken) 2011; 63:1295–1306.  Back to cited text no. 5
    
6.
Mahmoud MF, Hassan NA, El Bassossy HM, Fahmy A. Quercetin protects against diabetes-induced exaggerated vasoconstriction in rats: effect on low grade inflammation. PLoS One 2013; 8:63784.  Back to cited text no. 6
    
7.
Kang DH, Nakagawa T, Feng L. A role for uric acid in the progression of renal disease. J Am Soc Nephrol 2002; 13:2888–2897.  Back to cited text no. 7
    
8.
Kensara OA. Protective effect of vitamin C supplementation on oxonate-induced hyperuricemia and renal injury in rats. Int J Nutri Metabol 2013; 5:61–68.  Back to cited text no. 8
    
9.
Sánchez-Lozada LG, Tapia E, Santamaría J. Mild hyperuricemia induces vasoconstriction and maintains glomerular hypertension in normal and remnant kidney rats, Kidney Int 2005; 67:237–247.  Back to cited text no. 9
    
10.
Fei Y, Ye D, Fan X, Dong F. Effect of Dioscorea tokoro Makino extract on hyperuricemia in mice. Tropl J Pharmaceu Res 2016; 15:1883–1887.  Back to cited text no. 10
    
11.
Long CL, Qin XC, Pan ZY, Chen K, Zhang YF, Cui WY, et al. Activation of ATP-sensitive potassium channels protects vascular endothelial cells from hypertension and renal injury induced by hyperuricemia. J Hypertens 2008; 26:2326–2338.  Back to cited text no. 11
    
12.
Taalat KM, El-Sheikh AR. The effect of mild hyperuricaemia on urinary transforming growth factor beta and the progression of chronic kidney disease. Am J Nephrol 2007; 27:435–440.  Back to cited text no. 12
    
13.
Bellomo G, Venanzi S, Verdura C, Saronio P, Esposito A, Timio M. Association of uric acid with change in kidney function in healthy normotensive individuals. Am J Kidney Dis 2010; 56:264–272.  Back to cited text no. 13
    
14.
Iseki K, Ikemiya Y, Inoue T, Iseki C, Kinjo K, Takishita S. Significance of hyperuricaemia as a risk factor for developing ESRD in a screened cohort. Am J Kidney Dis 2004; 44:642–650.  Back to cited text no. 14
    
15.
Weiner DE, Tighiouart H, Elsayed EF, Griffith JL, Salem DN, Levey AS. Uric acid and incident kidney disease in the community. J Am Soc Nephrol 2008; 19:1204–1211.  Back to cited text no. 15
    
16.
Domrongkitchaiporn S, Sritara P, Kitiyakara C, Stitchantrakul W, Rittaphol V, Lolekha P, et al. Risk factors for development of decreased kidney function in a Southeast Asian population: a 12-year cohort study. J Am Soc Nephrol 2005; 16:791–799.  Back to cited text no. 16
    
17.
Obermayr RP, Temml C, Gutjahr G, Knechtelsdorfer M, Oberbauer R, Klauser-Braun R. Elevated uric acid increases the risk for kidney disease. J Am Soc Nephrol 2008; 19:2407–2413.  Back to cited text no. 17
    
18.
Noone DG, Marks SD. Hyperuricemia is associated with hypertension, obesity, and albuminuria in children with chronic kidney disease. J Pediatr 2013; 162:128–132.  Back to cited text no. 18
    
19.
Nakagawa T, Mazzali M, Kang DH, Sanchez-Lozada LG, Herrara-Acosta J, Johnson RJ. Uric acid: a uremic toxin? Blood Purif 2006; 24:67–70.  Back to cited text no. 19
    
20.
Lee JE, Kim YG, Choi YH, Huh W, Kim DJ, Oh HY. Serum uric acid is associated with microalbuminuria in prehypertension. Hypertens 2006; 47:962–967.  Back to cited text no. 20
    
21.
Heinig M, Johnson RJ. Role of uric acid in hypertension, renal disease, and metabolic syndrome. Cleve Clin J Med 2006; 73:1059–1064.  Back to cited text no. 21
    
22.
El-Kotb S, Galal R. The additive beneficial antioxidant effect of ozone therapy to xanthine oxidase inhibitor in experimentally-induced hyperuricemic rats med. J Cairo Univ 2014; 82:211–217.  Back to cited text no. 22
    
23.
Sánchez-Lozada LG, Soto V, Tapia E, Avila-Casado C, Sautin YY, Nakagawa T. Role of oxidative stress in the renal abnormalities induced by experimental hyperuricemia. Am J Physiol Renal Physiol 2008; 295:F1134–F1141.  Back to cited text no. 23
    
24.
Mazzali M, Kanellis J, Han L. Hyperuricemia induces a primary arteriolopathy in rats by a blood pressure-independent mechanism. Am J Physiol Renal Physiol 2002; 282:F991–F997.  Back to cited text no. 24
    
25.
Corry DB, Eslami P, Yamamoto K, Nyby MD, Makino H, Tuck ML. Uric acid stimulates vascular smooth muscle cell proliferation and oxidative stress via the vascular renin-angiotensin system. J Hypertens 2008; 26:269–275.  Back to cited text no. 25
    
26.
Essawy S, Khaled AS, El baz A. Comparing the effects of inorganic nitrate and allopurinol in renovascular complications of metabolic syndrome in rats: role of nitric oxide and uric acid. Acta Endocrino (Buc) 2012; VIII: 387–402.  Back to cited text no. 26
    
27.
Sedaghat S, Hoorn EJ, van R. Serum uric acid and chronic kidney disease: the role of hypertension, PLoS One 2013; 8:11.  Back to cited text no. 27
    
28.
Wang J, Qin T, Chen J, Li Y, Wang L, Huang H, Li J. Hyperuricemia and risk of incident hypertension: a systematic review and meta-analysis of observational studies. PLoS One 2014; 9:e114259.  Back to cited text no. 28
    
29.
Almaghrabi OA. Molecular and biochemical investigations on the effect of quercetin on oxidative stress induced by cisplatin in rat kidney. Saudi J Biol Sci. 2015; 22:227–231.  Back to cited text no. 29
    
30.
Hu QH, Zhang X, Pan Y, Li YC, Kong LD. Allopurinol, quercetin and rutin ameliorate renal NLRP3 inflammasome activation and lipid accumulation in fructose-fed rats. Biochem Pharmacol 2012; 84:113–125.  Back to cited text no. 30
    
31.
Sanchez-Gonzalez PD, Lopez-Hernandez FJ, Perez-Barriocanal F, Morales AI, Lopez-Novoa JM. Quercetin reduces cisplatin nephrotoxicity in rats without compromising its anti-tumour activity. Nephrol Dial Transplant 2011; 6:3484–3495.  Back to cited text no. 31
    
32.
Sánchez M, Galisteo M, Vera R, Villar IC, Zarzuelo A, Tamargo J, et al. Quercetin downregulates NADPH oxidase, increases eNOS activity and prevents endothelial dysfunction in spontaneously hypertensive rats. J Hypertens 2006; 24:1.  Back to cited text no. 32
    
33.
Serban MC, Sahebkar A, Zanchetti A, Mikhailidis DP, Howard G, Antal D, et al. Effects of quercetin on blood pressure: a systematic review and meta-analysis of randomized controlled trials. J Am Heart Associ 2016; 5:e002713.  Back to cited text no. 33
    
34.
Yamamoto Y, Oue E. Antihypertensive effect of quercetin in rats fed with a high-fat high-sucrose diet. Biosci Biotechnol Biochem 2006; 70:933–939.  Back to cited text no. 34
    
35.
Loizzo MR, Said A, Tundis R, et al. Inhibition of angiotensin converting enzyme (ACE) by flavonoids isolated from Ailanthus excelsa (Roxb) (Simaroubaceae). Phytother Res 2007; 21:32–36.  Back to cited text no. 35
    
36.
Häckl LP, Cuttle G, Dovichi SS, Lima-Landman MT, Nicolau M. Inhibition of angiotensin-converting enzyme by quercetin alters the vascular response to bradykinin and angiotensin I. Pharmacol 2002; 65:182–186.  Back to cited text no. 36
    
37.
Mackraj I, Govender T, Ramesar S. The antihypertensive effects of quercetin in a salt-sensitive model of hypertension. J Cardiovasc Pharmacol 2008; 51:239–245.  Back to cited text no. 37
    
38.
Duarte J, Pérez-Palencia R, Vargas F, Angeles Ocete M, Pérez-Vizcaino F, Zarzuelo A. Antihypertensive effects of the flavonoid quercetin in spontaneously hypertensive rats. Br J Pharmacol 2001; 133:117–124.  Back to cited text no. 38
    
39.
Duarte J, Jiménez R, O'valle F, Galisteo M, Pérez-Palencia R, Vargas F, et al. Protective effects of the flavonoid quercetin in chronic nitric oxide deficient rats. J Hypertens 2002; 20:1843–1854.  Back to cited text no. 39
    
40.
Neogi T, George J, Rekhraj S, Struthers AD, Choi H, Terkeltaub RA. Are either or both hyperuricemia and xanthine oxidase directly toxic to the vasculature? Arthritis Rheum 2012; 64:327–338.  Back to cited text no. 40
    
41.
Prasad Sah O, Qing YX. Associations between hyperuricemia and chronic kidney disease. A review. Nephro Urol Mon 2015; 7:e27233.  Back to cited text no. 41
    
42.
Agarwal V, Hans N, Messerli FH. Effect of allopurinol on blood pressure: a systematic review and meta-analysis. J Clin Hypertens 2013; 15:435–442.  Back to cited text no. 42
    
43.
Wang MX, Liu YL, Yang Y, Zhang DM, Kong LD. Nuciferine restores potassium oxonate-induced hyperuricemia and kidney inflammation in mice. Europ J Pharmacol 2015; 747:59–70.  Back to cited text no. 43
    
44.
Verzola D, Ratto E, Villaggio B. Uric acid promotes apoptosis in human proximal tubule cells by oxidative stress and the activation of NADPH oxidase NOX 4. PLoS One 2014; 9:12.  Back to cited text no. 44
    
45.
Abigail J, David S, Thunder J. Therapeutic potential of quercetin to decrease blood pressure: review of efficacy and mechanisms. Adv Nutr 2012; 3:39–46.  Back to cited text no. 45
    
46.
Pérez-Vizcaıno F, Ibarra M, Cogolludo AL, Duarte J, Zaragozá-Arnáez F, Moreno L, et al. Endothelium-independent vasodilator effects of the flavonoid quercetin and its methylated metabolites in rat conductance and resistance arteries. J Pharmacol Exp Ther 2012; 302:66–72.  Back to cited text no. 46
    
47.
Rendig SV, Symons DJ, Longhurst JC, Amsterdam EA. Effects of red wine, alcohol, and quercetin on coronary resistance and conductance arteries. J Cardiovasc Pharmacol 2011; 38:219–227.  Back to cited text no. 47
    


    Figures

  [Figure 1]
 
 
    Tables

  [Table 1], [Table 2], [Table 3], [Table 4], [Table 5], [Table 6], [Table 7]


This article has been cited by
1 Quantification of quercetin from red onion (Allium cepa L.) powder via high-performance liquid chromatography-ultraviolet (HPLC-UV) and its effect on hyperuricemia in male healthy Wistar albino rats
Muhammad Umer, Mahr Un Nisa, Nazir Ahmad, Muhammad Abdul Rahim, Ladislaus Manaku Kasankala
Food Science & Nutrition. 2023;
[Pubmed] | [DOI]



 

Top
 
 
  Search
 
Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
Access Statistics
Email Alert *
Add to My List *
* Registration required (free)

 
  In this article
Abstract
Introduction
Materials and Me...
Results
Discussion
Conclusion
References
Article Figures
Article Tables

 Article Access Statistics
    Viewed3332    
    Printed134    
    Emailed0    
    PDF Downloaded225    
    Comments [Add]    
    Cited by others 1    

Recommend this journal


[TAG2]
[TAG3]
[TAG4]