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Pascart T, Lioté F. Gout: state of the art after a decade of developments. Rheumatology (Oxford) 2019; 58:27-44. [PMID: 29547895 DOI: 10.1093/rheumatology/key002] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Indexed: 02/06/2023] Open
Abstract
This review article summarizes the relevant English literature on gout from 2010 through April 2017. It emphasizes that the current epidemiology of gout indicates a rising prevalence worldwide, not only in Western countries but also in Southeast Asia, in close relationship with the obesity and metabolic syndrome epidemics. New pathogenic mechanisms of chronic hyperuricaemia focus on the gut (microbiota, ABCG2 expression) after the kidney. Cardiovascular and renal comorbidities are the key points to consider in terms of management. New imaging tools are available, including US with key features and dual-energy CT rendering it able to reveal deposits of urate crystals. These deposits are now included in new diagnostic and classification criteria. Overall, half of the patients with gout are readily treated with allopurinol, the recommended xanthine oxidase inhibitor (XOI), with prophylaxis for flares with low-dose daily colchicine. The main management issues are related to patient adherence, because gout patients have the lowest rate of medication possession ratio at 1 year, but they also include clinical inertia by physicians, meaning XOI dosage is not titrated according to regular serum uric acid level measurements for targeting serum uric acid levels for uncomplicated (6.0 mg/dl) and complicated gout, or the British Society for Rheumatology recommended target (5.0 mg/dl). Difficult-to-treat gout encompasses polyarticular flares, and mostly patients with comorbidities, renal or heart failure, leading to contraindications or side effects of standard-of-care drugs (colchicine, NSAIDs, oral steroids) for flares; and tophaceous and/or destructive arthropathies, leading to switching between XOIs (febuxostat) or to combining XOI and uricosurics.
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Affiliation(s)
- Tristan Pascart
- EA 4490, Lille University, Lille, France.,Service de Rhumatologie, Hôpital Saint-Philibert, Lomme, France
| | - Frédéric Lioté
- UFR de Médecine, University of Paris Diderot, USPC, France.,INSERM, UMR 1132 Bioscar (Centre Viggo Petersen), France.,Service de Rhumatologie (Centre Viggo Petersen), Pôle Appareil Locomoteur, Hôpital Lariboisière (AP-HP), Paris, France
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Chou HW, Chiu HT, Tsai CW, Ting IW, Yeh HC, Huang HC, Kuo CC. Comparative effectiveness of allopurinol, febuxostat and benzbromarone on renal function in chronic kidney disease patients with hyperuricemia: a 13-year inception cohort study. Nephrol Dial Transplant 2019; 33:1620-1627. [PMID: 29165620 DOI: 10.1093/ndt/gfx313] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 10/04/2017] [Indexed: 12/21/2022] Open
Abstract
Background Direct comparisons of the effectiveness of allopurinol with that of other urate-lowering agents in chronic kidney disease (CKD) populations, as well as guideline recommendations for clinical practice, are lacking. Methods We constructed a pharmacoepidemiology cohort study by including patients from Taiwan's long-term integrated CKD care program to compare the effectiveness among allopurinol, febuxostat and benzbromarone in reducing the risk of progression to dialysis. A total of 874 patients with hyperuricemia who were newly treated with allopurinol, febuxostat or benzbromarone were included. The primary and secondary outcomes were incident end-stage renal disease (ESRD) and the serum uric acid (SUA) changes from baseline, respectively. The results were analyzed using multiple Cox proportional models adjusted for multinomial propensity scores. For subgroup analyses, we further stratified patients according to whether their latest SUA level reached the therapeutic target. Results Compared with allopurinol, benzbromarone therapy was associated with a reduced risk of progression to dialysis, the adjusted hazard ratio was 0.50 (95% confidence interval, 0.25-0.99). Patients who received allopurinol or febuxostat exhibited a comparable risk of ESRD [adjusted hazard ratio, 0.99 (0.40-2.44)]. Febuxostat was significantly more potent than allopurinol or benzbromarone in lowering SUA levels in the fully adjusted model. Among patients who reached the therapeutic target, those with febuxostat and benzbromarone initiation had a significantly lower risk of ESRD. Conclusions In conclusion, compared with conventional allopurinol, febuxostat and benzbromarone may be more effective in reducing the risk of progression to dialysis and in lowering SUA levels in CKD populations.
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Affiliation(s)
- Hsu-Wen Chou
- Clinical Research Outcome and Training Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Hsien-Tsai Chiu
- Clinical Research Outcome and Training Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Ching-Wei Tsai
- Department of Internal Medicine, Kidney Institute and Division of Nephrology, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan.,Big Data Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - I-Wen Ting
- Department of Internal Medicine, Kidney Institute and Division of Nephrology, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Hung-Chieh Yeh
- Department of Internal Medicine, Kidney Institute and Division of Nephrology, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Han-Chun Huang
- Clinical Research Outcome and Training Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Chin-Chi Kuo
- Department of Internal Medicine, Kidney Institute and Division of Nephrology, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan.,Big Data Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
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53
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Tsai CW, Chiu HT, Huang HC, Ting IW, Yeh HC, Kuo CC. Uric acid predicts adverse outcomes in chronic kidney disease: a novel insight from trajectory analyses. Nephrol Dial Transplant 2019; 33:231-241. [PMID: 29140472 DOI: 10.1093/ndt/gfx297] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 08/26/2017] [Indexed: 02/07/2023] Open
Abstract
Background Very little is known about longitudinal trajectories of serum uric acid (SUA) over the course of chronic kidney disease (CKD). We aimed to determine whether longitudinal SUA trajectories are associated with the risk of end-stage renal disease (ESRD) and all-cause mortality among CKD patients. Methods We conducted a prospective cohort study from a 13-year multidisciplinary pre-ESRD care registry. The final study population consisted of 5090 CKD patients aged 20-90 years between 2003 and 2015. An individual's SUA trajectory was defined by group-based trajectory modeling in four distinct patterns: high, moderate-high, moderate and low. Time to ESRD and death was analyzed by multiple Cox regression. Results A total of 948 ESRD events and 472 deaths occurred with incidence rates of 57.9 and 28.7 per 1000 person-years, respectively. Compared with those with a low SUA trajectory, the adjusted hazard ratio of patients for incident ESRD was in a dose-response manner as follows: moderate, 1.89 [95% confidence interval (CI), 1.37-2.60]; moderate-high, 2.49 (1.75-3.55); and high, 2.84 (1.81-4.47); after considering the competing risk of death. For all-cause mortality, the corresponding risk estimate of the same SUA trajectory was 1.38 (95% CI, 0.89-2.12), 1.95 (1.22-3.10) and 4.52 (2.48-8.26), respectively. The unfavorable effect of elevated SUA trajectories on progression to ESRD was differentially higher among CKD patients without using urate-lowering agents at baseline (P for interaction = 0.018). Conclusions Elevated SUA trajectories are associated with accelerated kidney failure and all-cause mortality in CKD patients. Adequate experimental evidence is urgently needed to inform when and how to optimize SUA in this population.
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Affiliation(s)
- Ching-Wei Tsai
- Big Data Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Clinical Research Outcome and Training Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Kidney Institute and Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Hsien-Tsai Chiu
- Big Data Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Clinical Research Outcome and Training Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan
| | - Han-Chun Huang
- Big Data Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Clinical Research Outcome and Training Center, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - I-Wen Ting
- Kidney Institute and Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Hung-Chieh Yeh
- Kidney Institute and Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Chin-Chi Kuo
- Big Data Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Clinical Research Outcome and Training Center, China Medical University Hospital, China Medical University, Taichung, Taiwan.,Kidney Institute and Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
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55
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Zhang K, Li C. ABCG2 gene polymorphism rs2231142 is associated with gout comorbidities but not allopurinol response in primary gout patients of a Chinese Han male population. Hereditas 2019; 156:26. [PMID: 31367212 PMCID: PMC6651898 DOI: 10.1186/s41065-019-0103-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 07/14/2019] [Indexed: 12/11/2022] Open
Abstract
Background One common ATP-binding cassette subfamily G member 2 (ABCG2) gene variant, which is encoded by the single nucleotide polymorphism (SNP) rs2231142, was identified to take an essential part in gouty arthritis. However, the relationship between rs2231142, gout comorbidities and therapeutic effect of allopurinol in Chinese Han male population is still unclear. Wherefore, this study explored into the association between ABCG2 SNP rs2231142 affecting common comorbidities and the therapeutic effect of allopurinol in Chinese Han male gout patients. Results ABCG2 SNP rs2231142 and the gout comorbidities including nephrolithiasis and CKD were associated (P = 0.014 and P = 0.026). Group CKD stage = 1 were significantly different from those in group CKD stage≥2 regarding genotypes of ABCG2 gene polymorphism, while they were not significantly different from those in group CKD stage≥3. Meanwhile, the genotypes of rs2231142 and allopurinol response were not significantly associated (P = 0.588). Conclusions ABCG2 rs2231142 may predict the risk of kidney comorbidities for Chinese Han male gout patients, but not allopurinol response.
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Affiliation(s)
- Keke Zhang
- 1Qingdao University, 38 Ningxia Road, Qingdao, 266003 China.,2Institute of Clinical Research, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266003 China
| | - Changgui Li
- 1Qingdao University, 38 Ningxia Road, Qingdao, 266003 China.,2Institute of Clinical Research, The Affiliated Hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266003 China
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56
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Sato Y, Feig DI, Stack AG, Kang DH, Lanaspa MA, Ejaz AA, Sánchez-Lozada LG, Kuwabara M, Borghi C, Johnson RJ. The case for uric acid-lowering treatment in patients with hyperuricaemia and CKD. Nat Rev Nephrol 2019; 15:767-775. [PMID: 31296965 DOI: 10.1038/s41581-019-0174-z] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2019] [Indexed: 02/07/2023]
Abstract
Hyperuricaemia is common among patients with chronic kidney disease (CKD), and increases in severity with the deterioration of kidney function. Although existing guidelines for CKD management do not recommend testing for or treatment of hyperuricaemia in the absence of a diagnosis of gout or urate nephrolithiasis, an emerging body of evidence supports a direct causal relationship between serum urate levels and the development of CKD. Here, we review randomized clinical trials that have evaluated the effect of urate-lowering therapy (ULT) on the rate of CKD progression. Among trials in which individuals in the control arm experienced progressive deterioration of kidney function (which we define as ≥4 ml/min/1.73 m² over the course of the study - typically 6 months to 2 years), treatment with ULT conferred consistent clinical benefits. In contrast, among trials where clinical progression was not observed in the control arm, treatment with ULT was ineffective, but this finding should not be used as an argument against the use of uric acid-lowering therapy. Although additional studies are needed to identify threshold values of serum urate for treatment initiation and to confirm optimal target levels, we believe that sufficient evidence exists to recommend routine measurement of serum urate levels in patients with CKD and consider initiation of ULT among those who are hyperuricaemic with evidence of deteriorating renal function, unless specific contraindications exist.
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Affiliation(s)
- Yuka Sato
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Daniel I Feig
- Division of Pediatric Nephrology, University of Alabama, Birmingham, AL, USA
| | - Austin G Stack
- Division of Nephrology, Department of Medicine, University Hospital Limerick, Limerick, Ireland.,Graduate Entry Medical School, University of Limerick, Limerick, Ireland
| | - Duk-Hee Kang
- Division of Nephrology, Department of Internal Medicine, Ewha Womans University College of Medicine Ewha Medical Research Center, Seoul, South Korea
| | - Miguel A Lanaspa
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - A Ahsan Ejaz
- Division of Nephrology, Hypertension and Renal Transplantation, University of Florida, Gainesville, FL, USA
| | - L Gabriela Sánchez-Lozada
- Laboratory of Renal Physiopathology, Department of Nephrology, INC Ignacio Chavez, Mexico City, Mexico
| | - Masanari Kuwabara
- Department of Cardiology and Intensive Care Unit, Toranomon Hospital, Tokyo, Japan
| | - Claudio Borghi
- Department of Medicine, University of Bologna, Bologna, Italy
| | - Richard J Johnson
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA. .,Rocky Mountain Regional VA Medical Center, Aurora, CO, USA.
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57
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Lin TC, Hung LY, Chen YC, Lo WC, Lin CH, Tam KW, Wu MY. Effects of febuxostat on renal function in patients with chronic kidney disease: A systematic review and meta-analysis. Medicine (Baltimore) 2019; 98:e16311. [PMID: 31335677 PMCID: PMC6709169 DOI: 10.1097/md.0000000000016311] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND/OBJECTIVE Hyperuricemia has been proven to be an independent risk factor for chronic kidney disease (CKD). However, the role of hyperuricemia in the progression of CKD remains unclear. Thus, we performed a systematic review and meta-analysis to evaluate the efficacy and safety of febuxostat, a first line urate-lowering agent, in CKD patients with hyperuricemia. METHODS We have systematically searched for randomized controlled trials assessing the efficacy and safety of febuxostat versus control in CKD patients with hyperuricemia through MEDLINE, PubMed, EMBASE, and Cochrane databases. All statistical analyses were conducted by using the statistical package Review Manager, version 5.3.5. Heterogeneity was assessed using the Cochrane Q and I tests and summary statistics were reported with 95% confidence interval. Two-tailed test was used for analysis and a P value of <.05 is considered statistically significant. RESULTS Eleven eligible trials with 1317 participants were included in the meta-analysis. A significant reduction in serum uric acid was found in the febuxostat treated group. Also, a significant higher eGFR was found in the febuxostat treated group among CKD stage 3 and 4 patients. No significant difference of major complication or death was identified between treatment and control groups. CONCLUSIONS The meta-analysis showed that other than its urate-lowering effect, febuxostat presented a reno-protective effect in CKD patients. More studies with larger sample sizes and higher quality are required to clarify the role of febuxostat use in the progression of CKD.
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Affiliation(s)
- Tsu-Chen Lin
- School of Medicine, College of Medicine, Taipei Medical University, Taipei
| | - Lie Yee Hung
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital
| | - Ying-Chun Chen
- Department of Pharmacy, Taipei Medical University-Shuang Ho Hospital, New Taipei City
| | - Wei-Cheng Lo
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei
| | - Chun Hung Lin
- Department of Orthopedics, Far Eastern Memorial Hospital
| | - Ka-Wai Tam
- Center for Evidence-Based Health Care, Taipei Medical University-Shuang Ho Hospital
- Department of Medicine Research, Taipei Medical University-Shuang Ho Hospital, New Taipei City
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University
- Department of Surgery, Taipei Medical University-Shuang Ho Hospital, New Taipei City
- Cochrane Taiwan, Taipei Medical University
| | - Mei-Yi Wu
- Division of Nephrology, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei
- Cochrane Taiwan, Taipei Medical University
- Division of Nephrology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei
- Department of Primary Care Medicine, Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan
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58
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Jeon HJ, Oh J, Shin DH. Urate-lowering agents for asymptomatic hyperuricemia in stage 3 - 4 chronic kidney disease: Controversial role of kidney function. PLoS One 2019; 14:e0218510. [PMID: 31206563 PMCID: PMC6576756 DOI: 10.1371/journal.pone.0218510] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 06/04/2019] [Indexed: 12/22/2022] Open
Abstract
Because the serum uric acid level increases as the glomerular filtration rate (GFR) decreases, hyperuricemia is associated with chronic kidney disease (CKD). Although hyperuricemia is a risk factor for CKD progression, the causal role of uric acid remains controversial in patients with CKD and asymptomatic hyperuricemia. This study included 588 patients with stage 3-4 CKD and asymptomatic hyperuricemia. Using propensity score matching, 165 pairs treated and untreated with pharmacologic urate-lowering therapy were matched. Kaplan-Meier curves were constructed to determine the effect of urate-lowering agents on kidney survival. The prognostic value for kidney survival was ascertained using Cox regression analysis. The GFR changes over time between the patients treated and untreated with urate-lowering agents were assessed using a linear mixed model analysis. The mean age of the matched patients was 63.2 ± 12.7 years, and 52 (15.8%) patients had diabetic nephropathy. The mean estimated GFR (eGFR) and serum uric acid level were 36.7 mL/min/1.73 m2 and 7.8 mg/dL, respectively. During a mean follow-up period of 41.9 months, 87 developed end-stage kidney disease (ESKD). The incidence rates of ESKD were comparable between the patients treated and untreated with urate-lowering agents. The Kaplan-Meier analysis indicated that kidney survival was also comparable between them. In the multivariate analysis, heart failure and low eGFR were the significant prognostic factors for kidney survival. However, pharmacologic urate-lowering therapy was not predictive of kidney survival. The overall GFR decline rate was also comparable between the groups (P = 0.13). The efficacy of pharmacologic urate-lowering therapy in delaying CKD progression remains controversial. Therefore, further randomized controlled trials are needed to confirm its efficacy in attenuating kidney function deterioration in patients with stage 3-4 CKD.
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Affiliation(s)
- Hee Jung Jeon
- Department of Internal Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Jieun Oh
- Department of Internal Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
| | - Dong Ho Shin
- Department of Internal Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Republic of Korea
- * E-mail:
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Zoccali C, Mallamaci F. Uric acid in chronic kidney disease: the quest for causality continues. Nephrol Dial Transplant 2019; 33:193-195. [PMID: 29294051 DOI: 10.1093/ndt/gfx341] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 11/09/2017] [Indexed: 01/24/2023] Open
Affiliation(s)
- Carmine Zoccali
- CNR National Research Council (Italy) Clinical Epidemiology and Physiopathology of Renal Disease and Hypertension Unit, Reggio Calabria, Italy
| | - Francesca Mallamaci
- CNR National Research Council (Italy) Clinical Epidemiology and Physiopathology of Renal Disease and Hypertension Unit, Reggio Calabria, Italy
- Renal and Transplantation Unit Ospedali Riuniti Reggio Calabria, Reggio Calabria, Italy
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Eliseev MS, Novikova AM. [Comorbidity in gout and hyperuricemia: prevalence, causes, prospects of urate lowering therapy]. TERAPEVT ARKH 2019; 91:120-128. [PMID: 32598686 DOI: 10.26442/00403660.2019.05.000232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Indexed: 02/07/2023]
Abstract
Nowadays, there is increased interest in the connection of gout and asymptomatic hyperuricemia with comorbid conditions such as diabetes mellitus, cardiovascular diseases, hypertension, chronic kidney disease and other. Studies conducted over the past few decades suggest that not only gout, but also asymptomatic hyperuricemia can significantly worsen the prognosis in patients with cardiovascular diseases, as the deposition of urate crystals can be both an immediate cause and a factor in the progression of renal failure. In that way, the timely appointment of urate - lowering therapy and achieving the target serum uric acid level can not only affect joint damage, but also can significantly slow the progression of life - threatening comorbid conditions.
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Affiliation(s)
- M S Eliseev
- V.A. Nasonova Scientific and Research Institute of Reumatology
| | - A M Novikova
- V.A. Nasonova Scientific and Research Institute of Reumatology
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61
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Weaver DJ. Uric acid and progression of chronic kidney disease. Pediatr Nephrol 2019; 34:801-809. [PMID: 29931555 DOI: 10.1007/s00467-018-3979-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 04/30/2018] [Accepted: 05/01/2018] [Indexed: 02/07/2023]
Abstract
The association between serum uric acid levels and human disease has garnered intense interest over the last decade including chronic kidney disease. Animal studies have provided evidence for a potential mechanistic role of uric acid in promoting progression of chronic kidney disease. Epidemiologic studies have also suggested an association between elevated serum uric acid levels and worsening renal function in the general population as well as in patients with chronic kidney disease. However, there is currently insufficient evidence to recommend the use of uric acid-lowering therapy to delay progression of chronic kidney disease in this patient population. Adequately powered, randomized, placebo-controlled trials are required to more precisely evaluate the risk and benefits of uric acid-lowering therapy in pediatric patients.
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Affiliation(s)
- Donald J Weaver
- Division of Nephrology and Hypertension, Levine Children's Hospital, 1001 Blythe Boulevard, Ste 200, Charlotte, NC, 28203, USA.
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Jaffe DH, Klein AB, Benis A, Flores NM, Gabay H, Morlock R, Teltsch DY, Chapnick J, Molad Y, Giveon SM, Feldman B, Leventer-Roberts M. Incident gout and chronic Kidney Disease: healthcare utilization and survival. BMC Rheumatol 2019; 3:11. [PMID: 30937425 PMCID: PMC6425669 DOI: 10.1186/s41927-019-0060-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 02/26/2019] [Indexed: 11/16/2022] Open
Abstract
Background Uncontrolled gout can cause significant joint and organ damage and has been associated with impairments in quality of life and high economic cost. Gout has also been associated with other comorbid diseases, such as chronic kidney disease. The current study explored if healthcare resource utilization (HRU) and survival differs between patients with incident gout in the presence or absence of chronic kidney disease (CKD). Methods Clalit Health Services (CHS) data were used to conduct a retrospective population-based cohort study of incident gout between 1/1/2006–31/12/2009. Incident cases of gout were identified and stratified by CKD status and by age group (< 55 and 55+ years). CKD status was defined as a pre-existing diagnosis of chronic kidney disease, chronic renal failure, kidney transplantation, or dialysis at index date. Demographic and clinical characteristics, as well as healthcare resource use, were reported. Results A total of 12,940 incident adult gout patients, with (n = 8286) and without (n = 4654) CKD, were followed for 55,206 person-years. Higher rates of HRU were observed for gout patients with CKD than without. Total annual hospital admissions for patients with gout and CKD were at least 3 times higher for adults < 55 (mean = 0.51 vs 0.13) and approximately 1.5 times higher for adults 55+ (mean = 0.46 vs 0.29) without CKD. Healthcare utilization rates from year 1 to year 5 remained similar for gout patients < 55 years irrespective of CKD status, however varied according to healthcare utilization by CKD status for gout patients 55+ years. The 5-year all-cause mortality was higher among those with CKD compared to those without CKD for both age groups (HR< 55 years = 1.65; 95% CI 1.01–2.71; HR55+ years = 1.50; 95% CI 1.37–1.65). Conclusions The current study suggests important differences exist in patient characteristics and outcomes among patients with gout and CKD. Healthcare utilization differed between sub-populations, age and comorbidities, over the study period and the 5-year mortality risk was higher for gout patients with CKD, regardless of age. Future work should explore factors associated with these outcomes and barriers to gout control in order to enhance patient management among this high-risk subgroup.
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Affiliation(s)
- Dena H Jaffe
- Kantar Health, Ariel Sharon St 4, 52511 Ramat-Gan, Israel
| | - Alyssa B Klein
- 2AstraZeneca, Medical Evidence and Observational Research Centre, 200 Orchard Ridge Drive, Gaithersburg, MD USA
| | - Arriel Benis
- Clalit Research Institute, Zamenhoff 42, Floor - 1, 6435331 Tel Aviv, Israel
| | | | - Hagit Gabay
- Clalit Research Institute, Zamenhoff 42, Floor - 1, 6435331 Tel Aviv, Israel
| | | | | | | | - Yair Molad
- 8Beilinson Hospital, Rabin Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Petach Tikva, Israel
| | - Shmuel M Giveon
- Clalit Research Institute, Zamenhoff 42, Floor - 1, 6435331 Tel Aviv, Israel
| | - Becca Feldman
- Clalit Research Institute, Zamenhoff 42, Floor - 1, 6435331 Tel Aviv, Israel
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Antioxidants as Renoprotective Agents for Ischemia during Partial Nephrectomy. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8575398. [PMID: 30882000 PMCID: PMC6383545 DOI: 10.1155/2019/8575398] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 10/29/2018] [Accepted: 01/22/2019] [Indexed: 12/28/2022]
Abstract
Small renal masses have been diagnosed increasingly in recent decades, allowing surgical treatment by partial nephrectomy. This treatment option is associated with better renal function preservation, in comparison with radical nephrectomy. However, for obtaining a bloodless field during surgery, occlusion of renal artery and veins is often required, which results in transitory ischemia. The renal ischemia-reperfusion injury is associated with increased reactive oxygen species production leading to renal tissue damage. Thus, the use of antioxidants has been advocated in the partial nephrectomy perioperative period. Several antioxidants were investigated in regard to renal ischemia-reperfusion injury. The present manuscript aims to present the literature on the most commonly studied antioxidants used during partial nephrectomy. The results of experimental and clinical studies using antioxidants during partial nephrectomy are reported. Further, alimentary sources of some antioxidants are presented, stimulating future studies focusing on perioperative antioxidant-rich diets.
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Mizukoshi T, Kato S, Ando M, Sobajima H, Ohashi N, Naruse T, Saka Y, Shimizu H, Nagata T, Maruyama S. Renoprotective effects of topiroxostat for Hyperuricaemic patients with overt diabetic nephropathy study (ETUDE study): A prospective, randomized, multicentre clinical trial. Nephrology (Carlton) 2019; 23:1023-1030. [PMID: 28990729 DOI: 10.1111/nep.13177] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/02/2017] [Indexed: 12/17/2022]
Abstract
AIM We aimed to evaluate the anti-albuminuric effects of topiroxostat in Japanese hyperuricaemic patients with diabetic nephropathy. METHODS In this 24-week, multicentre, open-label, randomized (1 : 1) trial, we assigned hyperuricaemic patients with diabetic nephropathy (estimated glomerular filtration rate ≥ 20 mL/min per 1.73m2 ) and overt proteinuria (0.3 ≤ urine protein to creatinine ratio (UPCR) <3.5 g/g Cr) to either high dose (160 mg daily) or low dose (40 mg daily) topiroxostat. The primary endpoint was the change in albuminuria indicated by urine albumin-to-creatinine ratio (UACR) from the baseline at the final time point. RESULTS A total of 80 patients underwent randomization. The changes in UACR after 24 weeks of treatment (or at the final time point if patients failed to reach 24 weeks) relative to the baseline were -122 mg/gCr (95% CI: -5.1 to -240.1, P = 0.041) in patients treated with high dose, while treatment with low dose topiroxostat could not show significant reduction (P = 0.067). In the linear mixed model including baseline albuminuria, eGFR, age, and sex as covariates, the decreases in UACR were still significant from baseline to 12 weeks by 228.7 ± 83.2 mg/gCr (P = 0.0075) in the high dose group. The adverse-event profile during this study was not different between the groups. CONCLUSION Topiroxostat 160 mg daily reduced albuminuria in patients with diabetic nephropathy. (Funded by Sanwa Kagaku Kenkyusho; Trial registration, UMIN000015403).
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Affiliation(s)
- Toshihiro Mizukoshi
- Department of Nephrology, Nagoya University Graduate School of Medicine, Aichi, Japan
| | - Sawako Kato
- Department of Nephrology, Nagoya University Graduate School of Medicine, Aichi, Japan
| | - Masahiko Ando
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Aichi, Japan
| | - Hiroshi Sobajima
- Department of Diabetology and Nephrology, Ogaki Municipal Hospital, Aichi, Japan
| | - Norimi Ohashi
- Department of Diabetology and Nephrology, Ogaki Municipal Hospital, Aichi, Japan
| | - Tomohiko Naruse
- Department of Nephrology, Kasugai Municipal Hospital, Aichi, Japan
| | - Yosuke Saka
- Department of Nephrology, Kasugai Municipal Hospital, Aichi, Japan
| | - Hideaki Shimizu
- Department of Nephrology, Chubu Rousai Hospital, Aichi, Japan
| | - Takanobu Nagata
- Department of Nephrology, Nagoya University Graduate School of Medicine, Aichi, Japan
| | - Shoichi Maruyama
- Department of Nephrology, Nagoya University Graduate School of Medicine, Aichi, Japan
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Cuenca JA, Balda J, Palacio A, Young L, Pillinger MH, Tamariz L. Febuxostat and Cardiovascular Events: A Systematic Review and Meta-Analysis. Int J Rheumatol 2019; 2019:1076189. [PMID: 30863448 PMCID: PMC6378016 DOI: 10.1155/2019/1076189] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 01/03/2019] [Accepted: 01/16/2019] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Febuxostat is approved in the United States for the management of hyperuricemia in patients with gout. In November 2017 the FDA released a warning alert on a possible link between febuxostat and cardiovascular disease (CVD) reported in a single clinical trial. OBJECTIVE To conduct a systematic review and meta-analysis and assess the risk of major adverse cardiovascular events (MACE) in patients receiving febuxostat compared to a control group. METHODS We searched the MEDLINE and EMBASE database for studies published up until March 2018. We included randomized clinical trials (RCTs) that compared febuxostat to control groups including placebo and allopurinol. We calculated the pooled relative risk (RR) of MACE and cardiovascular disease (CVD) mortality with the corresponding 95% confidence intervals (CI). RESULTS Our search yielded 374 potentially relevant studies. Among the 25 RCTs included in the systematic review, 10 qualified for the meta-analysis. Among the 14,402 subjects included, the median age was 54 years (IQR 52-67) and 90% were male (IQR 82-96); 8602 received febuxostat, 5118 allopurinol, and 643 placebo. The pooled RR of MACE for febuxostat was 0.9; 95% CI 0.6-1.5 (p= 0.96) compared to the control. The RR of CV-related death for febuxostat was 1.29; 95% CI 1.01-1.66 (p=0.03). CONCLUSIONS Compared with other SU-lowering treatments, febuxostat does not increase or decrease the risk of cardiovascular disease but may increase the risk of CVD death. More RCTs measuring cardiovascular safety as a primary outcome are needed to adequately evaluate the risk of CVD with febuxostat.
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Affiliation(s)
| | - Javier Balda
- Universidad Catolica de Santiago de Guayaquil, Ecuador
| | - Ana Palacio
- Division of Population Health and Computational Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
- Veterans Affairs Medical Center, Miami, FL, USA
| | - Larry Young
- Veterans Affairs Medical Center, Miami, FL, USA
- Division of Rheumatology, University of Miami, USA
| | - Michael H. Pillinger
- Division of Rheumatology, New York University School of Medicine, USA
- Veterans Affairs Medical Center, New York, NY, USA
| | - Leonardo Tamariz
- Division of Population Health and Computational Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
- Veterans Affairs Medical Center, Miami, FL, USA
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Arbel Y, Abuzeid W, Rosenson RS, Weisman A, Farkouh ME. Old Drugs for New Indications in Cardiovascular Medicine. Cardiovasc Drugs Ther 2019; 32:223-232. [PMID: 29633048 DOI: 10.1007/s10557-018-6785-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Inflammation participates in the initiation and progression of atherosclerotic cardiovascular disease, and it is a critical inciting factor leading to acute ischemic events. Evidence has shown that certain anti-inflammatory medications used to treat non-atherosclerotic inflammatory diseases reduce cardiovascular events. This article reviews evidence that commonly used anti-inflammatory therapies (colchicine, allopurinol, methotrexate), reduce cardiovascular events. We discuss potential mechanisms of action, efficacy, and safety of these therapies and propose a clinical trials design to investigate their efficacy.
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Affiliation(s)
- Yaron Arbel
- Department of Cardiology, Tel Aviv Medical Center, Tel Aviv, affiliated to the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Wael Abuzeid
- Schulich Heart Centre, Division of Cardiology, Sunnybrook Health Sciences Centre, Ontario, Canada, affiliated with the University of Toronto, Toronto, Ontario, Canada
| | - Robert S Rosenson
- Mount Sinai Icahn School of Medicine, Mount Sinai Hospital, New York, USA
| | - Alanna Weisman
- Division of Endocrinology & Metabolism, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Michael E Farkouh
- Peter Munk Centre, Heart & Stroke Richard Lewar Centre of Excellence, University of Toronto, Toronto, Ontario, Canada
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Jordan DM, Choi HK, Verbanck M, Topless R, Won HH, Nadkarni G, Merriman TR, Do R. No causal effects of serum urate levels on the risk of chronic kidney disease: A Mendelian randomization study. PLoS Med 2019; 16:e1002725. [PMID: 30645594 PMCID: PMC6333326 DOI: 10.1371/journal.pmed.1002725] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 12/11/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Studies have shown strong positive associations between serum urate (SU) levels and chronic kidney disease (CKD) risk; however, whether the relation is causal remains uncertain. We evaluate whether genetic data are consistent with a causal impact of SU level on the risk of CKD and estimated glomerular filtration rate (eGFR). METHODS AND FINDINGS We used Mendelian randomization (MR) methods to evaluate the presence of a causal effect. We used aggregated genome-wide association data (N = 110,347 for SU, N = 69,374 for gout, N = 133,413 for eGFR, N = 117,165 for CKD), electronic-medical-record-linked UK Biobank data (N = 335,212), and population-based cohorts (N = 13,425), all in individuals of European ancestry, for SU levels and CKD. Our MR analysis showed that SU has a causal effect on neither eGFR level nor CKD risk across all MR analyses (all P > 0.05). These null associations contrasted with our epidemiological association findings from the 4 population-based cohorts (change in eGFR level per 1-mg/dl [59.48 μmol/l] increase in SU: -1.99 ml/min/1.73 m2; 95% CI -2.86 to -1.11; P = 8.08 × 10(-6); odds ratio [OR] for CKD: 1.48; 95% CI 1.32 to 1.65; P = 1.52 × 10(-11)). In contrast, the same MR approaches showed that SU has a causal effect on the risk of gout (OR estimates ranging from 3.41 to 6.04 per 1-mg/dl increase in SU, all P < 10-3), which served as a positive control of our approach. Overall, our MR analysis had >99% power to detect a causal effect of SU level on the risk of CKD of the same magnitude as the observed epidemiological association between SU and CKD. Limitations of this study include the lifelong effect of a genetic perturbation not being the same as an acute perturbation, the inability to study non-European populations, and some sample overlap between the datasets used in the study. CONCLUSIONS Evidence from our series of causal inference approaches using genetics does not support a causal effect of SU level on eGFR level or CKD risk. Reducing SU levels is unlikely to reduce the risk of CKD development.
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Affiliation(s)
- Daniel M. Jordan
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Hyon K. Choi
- Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail: (HKC); (RD)
| | - Marie Verbanck
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Ruth Topless
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Hong-Hee Won
- Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, South Korea
| | - Girish Nadkarni
- Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- Department of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Tony R. Merriman
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Ron Do
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
- * E-mail: (HKC); (RD)
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Kuriyama S. Protection of the kidney with sodium–glucose cotransporter 2 inhibitors: potential mechanisms raised by the large-scaled randomized control trials. Clin Exp Nephrol 2018; 23:304-312. [DOI: 10.1007/s10157-018-1673-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/14/2018] [Indexed: 12/15/2022]
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Vargas-Santos AB, Peloquin CE, Zhang Y, Neogi T. Association of Chronic Kidney Disease With Allopurinol Use in Gout Treatment. JAMA Intern Med 2018; 178:1526-1533. [PMID: 30304329 PMCID: PMC6248199 DOI: 10.1001/jamainternmed.2018.4463] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
IMPORTANCE Clinicians are often cautious about use of allopurinol in patients with gout when renal function declines. OBJECTIVE To assess the association of allopurinol use in gout with the risk of developing chronic kidney disease stage 3 or higher. DESIGN, SETTING, AND PARTICIPANTS A time-stratified propensity score-matched, population-based, prospective cohort study of individuals with newly diagnosed gout who initiated allopurinol (≥300 mg/d) compared with those who did not initiate allopurinol, using the Health Improvement Network (THIN), a United Kingdom general practitioner electronic health records database, was carried out. The data were analyzed using Cox proportional hazards regression. Among adults aged 18 to 89 years with newly diagnosed gout, we propensity score matched 4760 initiators of allopurinol (≥300 mg/d) to the same number of noninitiators of allopurinol, excluding those with chronic kidney disease stage 3 or higher or urate-lowering therapy use before their gout diagnosis. EXPOSURES Allopurinol initiation at a dose of 300 mg or more per day. MAIN OUTCOMES AND MEASURES Development of chronic kidney disease stage 3 or higher. RESULTS Of the 4760 allopurinol initiators (3975 men, 785 women) and same number of noninitiators (3971 men, 789 women), 579 and 623, respectively, developed chronic kidney disease stage 3 or higher, with a mean follow-up time of 5 and 4 years, mean age of 57 years, and mean body mass index (calculated as weight in kilograms divided by height in meters squared) of 30 for both groups. Use of allopurinol of at least 300 mg/d was associated with lower risk of developing chronic kidney disease stage 3 or higher compared with nonusers, with a hazard ratio (HR) of 0.87 (95% CI, 0.77-0.97). Allopurinol initiation at less than 300 mg/d was not associated with renal function decline (HR, 1.00; 95% CI, 0.91-1.09). CONCLUSIONS AND RELEVANCE In this large cohort, allopurinol initiation of at least 300 mg/d was associated with a lower risk of renal function deterioration. Because allopurinol does not appear to be associated with renal function decline, clinicians should consider evaluating other potential causes when patients with gout experience renal function decline.
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Affiliation(s)
- Ana Beatriz Vargas-Santos
- Internal Medicine Department, Rheumatology Unit, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christine E Peloquin
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, Massachusetts
| | - Yuqing Zhang
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, Massachusetts
| | - Tuhina Neogi
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, Massachusetts
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Liu X, Zhai T, Ma R, Luo C, Wang H, Liu L. Effects of uric acid-lowering therapy on the progression of chronic kidney disease: a systematic review and meta-analysis. Ren Fail 2018; 40:289-297. [PMID: 29619870 PMCID: PMC6014338 DOI: 10.1080/0886022x.2018.1456463] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVES Whether uric acid levels were associated with the progression of chronic kidney disease (CKD) remained controversial. This meta-analysis was aimed to assess the effect of lowering serum uric acid therapy on the progression of CKD to clarify the role of uric acid in the progression of CKD indirectly. METHODS Pubmed, Embase, the Cochrane library, CBM were searched for randomized controlled trials (RCTs) that assessed the efficiency of lowering serum uric acid therapy on the progression of CKD without language restriction. Summary estimates of weighted mean differences (WMDs) and relative risk (RR) were obtained by using random-effect or fixed-effect models. Sensitivity analyses were performed to identify the source of heterogeneity. RESULTS A total of 12 randomized controlled trials with 832 CKD participants were included in the analysis. Pooled estimate for eGFR was in favor of lowering serum uric acid therapy with a mean difference (MD) of 3.88 ml/min/1.73 m2, 95% CI 1.26-6.49 ml/min/1.73 m2, p = .004 and this was consistent with results for serum creatinine. The risk of worsening of kidney function or ESRD or death was significantly decreased in the treatment group compared to the control group (RR 0.39, 95% CI 0.28-0.52, p< .01). CONCLUSIONS Uric acid-lowering therapy may be effective in retarding the progression of CKD. Further randomized controlled trials should be performed to confirm the effect of lowering serum uric acid therapy on the progression of CKD.
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Affiliation(s)
- Xuemei Liu
- a Department of Nephrology , The Affiliated Hospital of Qingdao University , Qingdao , China
| | - Tingting Zhai
- a Department of Nephrology , The Affiliated Hospital of Qingdao University , Qingdao , China
| | - Ruixia Ma
- a Department of Nephrology , The Affiliated Hospital of Qingdao University , Qingdao , China
| | - Congjuan Luo
- a Department of Nephrology , The Affiliated Hospital of Qingdao University , Qingdao , China
| | - Huifang Wang
- a Department of Nephrology , The Affiliated Hospital of Qingdao University , Qingdao , China
| | - Liqiu Liu
- a Department of Nephrology , The Affiliated Hospital of Qingdao University , Qingdao , China
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Fülöp T, Koch CA, Norris LT, Rodríguez B, Szarvas T, Lengvárszky Z, Csongrádi É, Dixit MP. Uric Acid Control in Advanced Chronic Kidney Disease in a Southeastern US Urban Cohort. South Med J 2018; 111:549-555. [DOI: 10.14423/smj.0000000000000862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Association between post-transplant uric acid level and renal allograft fibrosis: Analysis using Banff pathologic scores from renal biopsies. Sci Rep 2018; 8:11601. [PMID: 30072753 PMCID: PMC6072792 DOI: 10.1038/s41598-018-29948-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 07/20/2018] [Indexed: 12/20/2022] Open
Abstract
Several experimental studies implicate uric acid in renal injury and fibrosis. The objective of this study was to examine the association between uric acid level and allograft fibrosis after kidney transplantation. 241 adult patients who underwent kidney transplantation between 2003 and 2014 were divided into three groups according to the sex specific tertiles of mean uric acid level within the first post-transplant year. The renal biopsies performed during 1 to 5 post-transplant year were analyzed to compare the degree of interstitial fibrosis and tubular atrophy (IF/TA). Mean interval between kidney transplantation and biopsy was similar between groups (23.7 ± 15.3 vs. 30.0 ± 18.6 vs. 27.5 ± 18.5 months, P = 0.072). The higher tertile uric acid level was, the more advanced grade of IF/TA was shown (P = 0.001). Multivariate analysis identified uric acid tertile was independent risk factor for severe IF/TA (odds ratio [95% confidence interval] was 3.16 [1.13-8.82] for tertile 2 and 3.70 [1.25-10.93] for tertile 3, versus tertile 1, respectively). Other independent factors were estimated glomerular filtration rate at 1year post-transplant (0.80 [CI 0.65-0.98]) and biopsy-proven rejection (2.34 [1.05-5.21]). Graft survival over 10 years was significantly lower in tertile 3 (P = 0.041). The results showed that higher uric acid level after kidney transplantation was associated with more severe IF/TA.
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Benn CL, Dua P, Gurrell R, Loudon P, Pike A, Storer RI, Vangjeli C. Physiology of Hyperuricemia and Urate-Lowering Treatments. Front Med (Lausanne) 2018; 5:160. [PMID: 29904633 PMCID: PMC5990632 DOI: 10.3389/fmed.2018.00160] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 05/08/2018] [Indexed: 12/18/2022] Open
Abstract
Gout is the most common form of inflammatory arthritis and is a multifactorial disease typically characterized by hyperuricemia and monosodium urate crystal deposition predominantly in, but not limited to, the joints and the urinary tract. The prevalence of gout and hyperuricemia has increased in developed countries over the past two decades and research into the area has become progressively more active. We review the current field of knowledge with emphasis on active areas of hyperuricemia research including the underlying physiology, genetics and epidemiology, with a focus on studies which suggest association of hyperuricemia with common comorbidities including cardiovascular disease, renal insufficiency, metabolic syndrome and diabetes. Finally, we discuss current therapies and emerging drug discovery efforts aimed at delivering an optimized clinical treatment strategy.
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Affiliation(s)
| | - Pinky Dua
- Pfizer Ltd., Cambridge, United Kingdom
| | | | | | - Andrew Pike
- DMPK, Oncology, IMED Biotech Unit, AstraZeneca, Cambridge, United Kingdom
| | - R Ian Storer
- IMED Biotech Unit, Medicinal Chemistry, Discovery Sciences, AstraZeneca, Cambridge, United Kingdom
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Safety and Efficacy of Benzbromarone and Febuxostat in Hyperuricemia Patients with Chronic Kidney Disease: A Prospective Pilot Study. Clin Exp Nephrol 2018; 22:1324-1330. [DOI: 10.1007/s10157-018-1586-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/28/2018] [Indexed: 01/22/2023]
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Pascart T, Richette P. Investigational drugs for hyperuricemia, an update on recent developments. Expert Opin Investig Drugs 2018; 27:437-444. [DOI: 10.1080/13543784.2018.1471133] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tristan Pascart
- Department of Rheumatology, Lille Catholic Hospitals, University of Lille, Lomme, France
- EA 4490, PMOI, Physiopathologie des Maladies Osseuses Inflammatoires, University of Lille, Lille, France
| | - Pascal Richette
- Department of Rheumatology, Assistance Publique-Hôpitaux de Paris, Hôpital Lariboisiere, Paris, France
- Department of Rheumatology, INSERM U1132 and University Paris-Diderot, Paris, France
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Viggiano D, Gigliotti G, Vallone G, Giammarino A, Nigro M, Capasso G. Urate-Lowering Agents in Asymptomatic Hyperuricemia: Role of Urine Sediment Analysis and Musculoskeletal Ultrasound. Kidney Blood Press Res 2018; 43:606-615. [DOI: 10.1159/000489145] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 04/12/2018] [Indexed: 11/19/2022] Open
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Panchapakesan U, Pollock C. Drug repurposing in kidney disease. Kidney Int 2018; 94:40-48. [PMID: 29628139 DOI: 10.1016/j.kint.2017.12.026] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 12/17/2017] [Accepted: 12/19/2017] [Indexed: 12/18/2022]
Abstract
Drug repurposing, is the re-tasking of known medications for new clinical indications. Advantages, compared to de novo drug development, include reduced cost and time to market plus the added benefit of a known pharmacokinetic and safety profiles. Suitable drug candidates are identified through serendipitous observations, data mining, or increased understanding of disease mechanisms. This review highlights drugs suited for repurposing in kidney disease. The main cause of mortality in patients with chronic kidney disease is cardiovascular disease. Hence, we have included CV endpoints for the drugs. This review begins with candidates in acute kidney injury: vasodilators levosimendan and vitamin D, followed by candidates in CKD, with particular focus on diabetic kidney disease, autosomal dominant polycystic kidney disease, and focal segmental glomerulosclerosis. Examples include glucose-lowering drugs (sodium glucose co-transporter 2 inhibitors, glucagon-like peptide 1 agonists, and metformin), which have mechanistic potential for cardiac and/or renal protection beyond glucose lowering, with broader applicability to the nondiabetic population; xanthine oxidase inhibitors (allopurinol, febuxostat), selective endothelin receptor A antagonist (atrasentan), Janus kinase inhibitor (baricitinib), selective costimulation modulator (abatacept), pentoxyfylline, and the DNA demethylating agent/vasodilator (hydralazine).
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Affiliation(s)
- Usha Panchapakesan
- Renal Research Group, Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, New South Wales 2065, Australia.
| | - Carol Pollock
- Renal Research Group, Kolling Institute of Medical Research, Royal North Shore Hospital, University of Sydney, New South Wales 2065, Australia
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Kohagura K, Kochi M, Miyagi T, Zamami R, Nagahama K, Yonemoto K, Ohya Y. Augmented Association Between Blood Pressure and Proteinuria in Hyperuricemic Patients With Nonnephrotic Chronic Kidney Disease. Am J Hypertens 2018; 31:480-485. [PMID: 28927237 DOI: 10.1093/ajh/hpx166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 09/12/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Hyperuricemia (HU) may enhance susceptibility to hypertensive renal damage via disrupted autoregulation of glomerular hemodynamics. The effect of HU on the association between blood pressure (BP) and proteinuria remains unknown in patients with chronic kidney disease (CKD). METHODS In total, 109 patients with nonnephrotic CKD (55 men and 54 females) who underwent renal biopsy were recruited. Arteriolar hyalinosis was semiquantitatively assessed via arteriole grading. Correlation between BP and urine protein (UP) level was examined based on the presence of HU, which was defined as the use of urate-lowering drugs or serum uric acid levels of ≥7 and ≥5 mg/dl in males and females, respectively, which were associated with increased risks of hyalinosis in our previous study. RESULTS Median age, BP, estimated glomerular filtration rate, and UP level were 38 years, 124/74 mm Hg, 82 ml/min/1.73 m2, and 0.8 g/gCr, respectively. In patients with HU (n = 59), log-transformed systolic BP (SBP) was significantly correlated with log-transformed UP level (r = 0.49, P < 0.0001); this was not observed in patients without HU (n = 50). Multiple regression analysis (R2 = 0.21, P = 0.0001) revealed that the interaction between HU and log-transformed SBP with respect to proteinuria was significantly correlated with log-transformed UP level (β = 7.0, P = 0.03), independent of age, sex, and potential confounding factors; however, this statistical significance was completely eliminated after adjustment for the arteriolar hyalinosis index. CONCLUSIONS HU potentiates susceptibility to hypertensive glomerular damage via disrupted autoregulation in patients with nonnephrotic CKD.
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Affiliation(s)
- Kentaro Kohagura
- Dialysis Unit, University Hospital of the Ryukyus, Okinawa, Japan
- Department of Cardiovascular Medicine, Nephrology and Neurology Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Masako Kochi
- Department of Cardiovascular Medicine, Nephrology and Neurology Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Tsuyoshi Miyagi
- Department of Cardiovascular Medicine, Nephrology and Neurology Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Ryo Zamami
- Department of Cardiovascular Medicine, Nephrology and Neurology Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Kazufumi Nagahama
- Department of Cardiovascular Medicine, Nephrology and Neurology Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Koji Yonemoto
- Advanced Medical Research Center, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Yusuke Ohya
- Dialysis Unit, University Hospital of the Ryukyus, Okinawa, Japan
- Department of Cardiovascular Medicine, Nephrology and Neurology Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
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79
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Abstract
PURPOSE OF REVIEW To discuss alternate models of long-term gout management RECENT FINDINGS: Nurse-led care of gout appears to improve the uptake of and adherence to urate-lowering treatment in a research setting. Less impressive improvements were achieved with pharmacist-led remote management of gout; however, both strategies were more effective than usual primary care provider management of gout. Individualised education about gout, patient involvement in decision-making, and access to trained support in managing side-effects and gout flares can improve the uptake of fine and adherence to urate-lowering treatment. This may be best achieved with nurse-led care of gout. However, further research is required to evaluate if the model of nurse-led care of gout can be implemented in routine clinical practice and in different healthcare systems.
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80
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Abstract
PURPOSE OF REVIEW Multiple experimental and clinical studies have identified pathways by which uric acid may facilitate the development and progression of chronic kidney disease (CKD) in people with diabetes. However, it remains uncertain if the association of uric acid with CKD represents a pathogenic effect or merely reflects renal impairment. RECENT FINDINGS In contrast to many published reports, a recent Mendelian randomization study did not identify a causal link between uric acid and CKD in people with type 1 diabetes. Two recent multicenter randomized control trials, Preventing Early Renal Function Loss in Diabetes (PERL) and FEbuxostat versus placebo rAndomized controlled Trial regarding reduced renal function in patients with Hyperuricemia complicated by chRonic kidney disease stage 3 (FEATHER), were recently designed to assess if uric acid lowering slows progression of CKD. We review the evidence supporting a role for uric acid in the pathogenesis of CKD in people with diabetes and the putative benefits of uric acid lowering.
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Affiliation(s)
- Ambreen Gul
- Dialysis Clinic, Inc., Quality Management, 1500 Indian School Rd. NE, Albuquerque, NM, 87102, USA
| | - Philip Zager
- Dialysis Clinic, Inc., Quality Management, 1500 Indian School Rd. NE, Albuquerque, NM, 87102, USA.
- University of New Mexico, Albuquerque, NM, USA.
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81
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Bredemeier M, Lopes LM, Eisenreich MA, Hickmann S, Bongiorno GK, d’Avila R, Morsch ALB, da Silva Stein F, Campos GGD. Xanthine oxidase inhibitors for prevention of cardiovascular events: a systematic review and meta-analysis of randomized controlled trials. BMC Cardiovasc Disord 2018; 18:24. [PMID: 29415653 PMCID: PMC5804046 DOI: 10.1186/s12872-018-0757-9] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/23/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Xanthine oxidase inhibitors (XOI), classified as purine-like (allopurinol and oxypurinol) and non-purine (febuxostat and topiroxostat) XOI, present antioxidant properties by reducing the production of reactive oxygen species derived from purine metabolism. Oxidative stress is an important factor related to endothelial dysfunction and ischemia-reperfusion injury, and may be implicated in the pathogenesis of heart failure, hypertension, and ischemic heart disease. However, there is contradictory evidence regarding the possible cardiovascular (CV) protective effect exerted by XOI. Our objective is to compare the incidence of major adverse cardiovascular events (MACE), mortality, total (TCE) and specific CV events in randomized controlled trials (RCTs) testing XOI against placebo or no treatment. METHODS PubMed, EMBASE, Web of Science, Cochrane Central, Lilacs databases were searched from inception to Dec 30 2016, along with hand searching. RCTs including exclusively adult individuals, lasting ≥ 4 weeks, with no language restriction, were eligible. Independent paired researchers selected studies and extracted data. Considering the expected rarity of events, Peto and DerSimonian/Laird odds ratios (OR), the latter in case of heterogeneity, were used for analysis. Random-effects meta-regression was used to explore heterogeneity. RESULTS The analysis of MACE included 81 articles (10,684 patients, 6434 patient-years). XOI did not significantly reduce risk of MACE (ORP = 0.71, 95% CI 0.46-1.09) and death (0.89, 0.59-1.33), but reduced risk of TCE (0.60, 0.44-0.82; serious TCE: 0.64, 0.46 to 0.89), and hypertension (0.54, 0.37 to 0.80). There was protection for MACE in patients with previous ischemic events (0.42, 0.23-0.76). Allopurinol protected for myocardial infarction (0.38, 0.17-0.83), hypertension (0.32, 0.18-0.58), TCE (0.48, 0.31 to 0.75, I2 = 55%) and serious TCE (0.56, 0.36 to 0.86, I2 = 44%). Meta-regression associated increasing dose of allopurinol with higher risk of TCE and serious TCE (P < 0.05). Accordingly, lower doses (≤ 300 mg/day) of allopurinol reduced the risk of TCE, unlike higher doses. Non-purine-like XOI did not significantly reduce or increase the risk of adverse CV events, but confidence intervals were wide. Quality of evidence was generally low to moderate. CONCLUSIONS Purine-like XOI may reduce the incidence of adverse CV outcomes. However, higher doses of allopurinol (> 300 mg/day) may be associated with loss of CV protection.
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Affiliation(s)
- Markus Bredemeier
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
- Serviço de Reumatologia do Hospital Nossa Senhora da Conceição, Avenida Francisco Trein, 596, sala 2048, Porto Alegre, RS 91350-200 Brazil
| | - Lediane Moreira Lopes
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
| | - Matheus Augusto Eisenreich
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
| | - Sheila Hickmann
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
| | - Guilherme Kopik Bongiorno
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
| | - Rui d’Avila
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
| | | | - Fernando da Silva Stein
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
| | - Guilherme Gomes Dias Campos
- Rheumatology Service at Hospital Nossa Senhora da Conceição, Grupo Hospitalar Conceição, Porto Alegre, RS Brazil
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82
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Jhang JJ, Ong JW, Lu CC, Hsu CL, Lin JH, Liao JW, Yen GC. Hypouricemic effects of Mesona procumbens Hemsl. through modulating xanthine oxidase activity in vitro and in vivo. Food Funct 2018; 7:4239-4246. [PMID: 27713960 DOI: 10.1039/c6fo00822d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Uric acid is a metabolite obtained from purine by xanthine oxidase activity (XO) and high levels of serum uric acid leads to hyperuricemia and gout. Mesona procumbens Hemsl. has been used as a healthy beverage and a traditional remedy. In this study, the hypouricemic effects of M. procumbens extracts were evaluated in vitro and in vivo. The 50% ethanol extract of M. procumbens (EE50) showed the strongest inhibitory effect on monosodium urate (MSU)-induced XO activity in THP-1 cells. However, the phenolics and flavonoids in EE50 may not serve as inhibitors of XO. EE50 prevented an increase in the serum uric acid level in potassium oxonate (PO)-challenged ICR mice and streptozocin (STZ)-induced SD rats. EE50 down-regulated STZ-induced liver XO activity, and it restored renal OAT1 and urate transporter expression. STZ-induced renal interleukin-1β (IL-1β) and the tumor necrosis factor-α (TNF-α) level were inhibited by EE50 treatment. EE50 exhibits the hypouricemic effect via down-regulation of XO activity, suggesting that EE50 has potential to improve hyperuricemia and its complications.
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Affiliation(s)
- Jhih-Jia Jhang
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
| | - Jia-Wei Ong
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
| | - Chi-Cheng Lu
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
| | - Chin-Lin Hsu
- School of Nutrition, Chung Shan Medical University, 110, Sec.1, Jianguo N. Road, Taichung 40201, Taiwan
| | - Jia-Hong Lin
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan.
| | - Jiunn-Wang Liao
- Graduate Institute of Veterinary Pathobiology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
| | - Gow-Chin Yen
- Department of Food Science and Biotechnology, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan. and Agricultural Biotechnology Center, National Chung Hsing University, 145 Xingda Road, Taichung 40227, Taiwan
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83
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Richette P, Latourte A, Bardin T. Cardiac and renal protective effects of urate-lowering therapy. Rheumatology (Oxford) 2017; 57:i47-i50. [DOI: 10.1093/rheumatology/kex432] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Indexed: 02/07/2023] Open
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84
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Su X, Xu B, Yan B, Qiao X, Wang L. Effects of uric acid-lowering therapy in patients with chronic kidney disease: A meta-analysis. PLoS One 2017; 12:e0187550. [PMID: 29095953 PMCID: PMC5667873 DOI: 10.1371/journal.pone.0187550] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/20/2017] [Indexed: 02/03/2023] Open
Abstract
Background and objectives The effects of uric acid-lowering therapy in patients with chronic kidney disease (CKD) remain uncertain. Therefore, we undertook a systematic review and meta-analysis to investigate the effects of uric acid-lowering agents on major clinical outcomes of CKD. Design, setting, participants, and measurements According to the pre-specified protocol that was registered with PROSPERO (No. CRD42016038030), we searched systematically in MEDLINE, EMBASE, and the Cochrane Library for trials up to February 2016. Prospective, randomized, controlled trials assessing the effects of uric acid-lowering agents on cardiovascular and kidney outcomes in patients with CKD were included. Random-effects analytical methods were used. Results Sixteen eligible trials were identified, providing data for 1,211 patients with CKD, including 146 kidney failure events and 69 cardiovascular events. Uric acid-lowering therapy produced a 55% relative risk (RR) reduction (95% confidence interval [95% CI], 31–64) for kidney failure events (P < 0.001), and a 60% RR reduction (95% CI, 17–62) for cardiovascular events (P < 0.001), but had no significant effect on the risk of all-cause death (RR, 0.86; 95% CI, 0.50–1.46). The mean differences in rate of decline in the estimated glomerular filtration rate (4.10 mL/min/1.73 m2 per year slower in uric acid-lowering therapy recipients, 95% CI, 1.86–6.35) and the standardized mean differences in the change in proteinuria or albuminuria (−0.23 units of standard deviation greater in uric acid-lowering therapy recipients; 95% CI, −0.43 to −0.04) were also statistically significant. Conclusions Uric acid-lowering therapy seemed to improve kidney outcomes and reduce the risk of cardiovascular events in adults with CKD.
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Affiliation(s)
- Xiaole Su
- Renal Division, Shanxi Medical University Second Hospital, Taiyuan, Shanxi, China
| | - Boyang Xu
- Renal Division, Shanxi Medical University Second Hospital, Taiyuan, Shanxi, China
| | - Bingjuan Yan
- Renal Division, Shanxi Medical University Second Hospital, Taiyuan, Shanxi, China
| | - Xi Qiao
- Renal Division, Shanxi Medical University Second Hospital, Taiyuan, Shanxi, China
| | - Lihua Wang
- Renal Division, Shanxi Medical University Second Hospital, Taiyuan, Shanxi, China
- * E-mail:
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85
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Foody J, Turpin RS, Tidwell BA, Lawrence D, Schulman KL. Major Cardiovascular Events in Patients with Gout and Associated Cardiovascular Disease or Heart Failure and Chronic Kidney Disease Initiating a Xanthine Oxidase Inhibitor. AMERICAN HEALTH & DRUG BENEFITS 2017; 10:393-401. [PMID: 29263773 PMCID: PMC5726059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/08/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Several observational studies and meta-analyses have suggested that treating hyperuricemia in patients with gout and moderate or severe chronic kidney disease (CKD) may improve renal and cardiovascular (CV) outcomes. OBJECTIVE To evaluate the impact of initiating allopurinol or febuxostat treatment on major CV events in patients with gout, preexisting CV disease (CVD) or heart failure (HF), and stage 3 or 4 CKD in a real-world setting. METHODS Patients with gout (aged >18 years) who initiated allopurinol or febuxostat treatment between 2009 and 2013 after a diagnosis of stage 3 or 4 CKD and CVD-including coronary artery disease (CAD), cerebrovascular disease, and peripheral vascular disease (PVD)-or HF were selected from the MarketScan databases. The major CV events included CAD-specific, cerebrovascular disease-specific, and PVD-specific events. Cox proportional hazards modeling identified the predictors of major CV events in aggregate, and of CAD, cerebrovascular disease, and PVD events, individually. RESULTS During follow-up, 2426 patients (370 receiving febuxostat and 2056 receiving allopurinol; 63% male; mean age, 73 years) had 162 major CV events (3.8% in those receiving febuxostat vs 7.2% in those receiving allopurinol; P = .015). The rates of major CV events per 1000 person-years were 51.8 (95% confidence interval [CI], 28-87) in patients initiating febuxostat and 99.3 (95% CI, 84-117) among those initiating allopurinol. Overall, 49.4% of patients had a CAD event, 32.5% had a PVD event, and 23.5% had a cerebrovascular disease-specific event. Febuxostat initiation was associated with a significantly lower risk for a major CV event versus patients who initiated allopurinol (hazard ratio, 0.52; P = .02), driven in large part by lower PVD-specific events (P = .026). CONCLUSION Patients with moderate-to-severe CKD and CVD or HF who initiated febuxostat treatment had a significantly lower rate of major CV events than patients who initiated allopurinol.
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Affiliation(s)
- JoAnne Foody
- Associate Professor, Harvard Medical School, Boston, MA, and Executive Director-Cardiovascular, Janssen Pharmaceuticals, New Brunswick, NJ
| | - Robin S Turpin
- Director and Head, Health Economics and Outcomes Research, Medical Affairs, Takeda Pharmaceuticals USA, Deerfield, IL
| | - Beni A Tidwell
- Research Associate, Outcomes Research Solutions, Shrewsbury, MA
| | - Debra Lawrence
- Director, Health Economics and Outcomes Research; Medical Affairs, Takeda Pharmaceuticals USA
| | - Kathy L Schulman
- Research Scientist and Principal, Outcomes Research Solutions, Shrewsbury, MA
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86
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Abstract
BACKGROUNDS Although evidence is mounting on the role of hyperuricemia in cardio-renal disease, continuing doubt remains as to whether hyperuricemia can be considered a major causal cardiovascular risk factor. In addition, available data suggest that treatment may be beneficial, even in the absence of overt gout, when hyperuricemia accompanies other clinical conditions, such as urate deposition, advanced chronic kidney disease, or cardiovascular risk factors. METHODS AND RESULTS Analysis of the literature suggests there would be sufficient evidence warranting clinical trials to determine whether lowering uric acid levels would be clinically beneficial in the prevention or treatment of cardiovascular and renal diseases. CONCLUSION Under a practical profile, it becomes progressively more important to investigate the possibility of reducing serum uric acid levels in the general population below the level of 5.0 mg/dL.
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Affiliation(s)
- Claudio Ferri
- a Division of Internal Medicine and Nephrology, School of Internal Medicine , University of L'Aquila, San Salvatore Hospital Coppito , L'Aquila , Italy
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87
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Abstract
This review deals with methodological problems in current evidence that suggest links between gout and adverse cardiovascular (CV) outcomes and renal disease, and presents a recently adopted approach aimed at overcoming such drawbacks. The review aims to provide more reliable answers regarding the role of uric acid in the pathogenesis and progression of cardiovascular and renal events.
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Affiliation(s)
- Carmine Zoccali
- a CNR-IFC , Clinical Epidemiology of Renal Diseases and Hypertension , Reggio Calabria , Italy
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88
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Pisano A, Cernaro V, Gembillo G, D'Arrigo G, Buemi M, Bolignano D. Xanthine Oxidase Inhibitors for Improving Renal Function in Chronic Kidney Disease Patients: An Updated Systematic Review and Meta-Analysis. Int J Mol Sci 2017; 18:E2283. [PMID: 29088122 PMCID: PMC5713253 DOI: 10.3390/ijms18112283] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 10/25/2017] [Accepted: 10/27/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Accruing evidence suggests that Xanthine Oxidase inhibitors (XOis) may bring direct renal benefits, besides those related to their hypo-uricemic effect. We hence aimed at performing a systematic review of randomized controlled trials (RCTs) to verify if treatment with XOis may improve renal outcomes in individuals with chronic kidney disease (CKD). METHODS Ovid-MEDLINE, PubMed and CENTRAL databases were searched for RCTs comparing any XOi to standard therapy or placebo. The primary endpoint of interest was progression to End-Stage Kidney Disease (ESKD); secondary endpoints were changes in serum creatinine, glomerular filtration rate (eGFR), proteinuria and albuminuria. RESULTS XOis treatment significantly reduced the risk of ESKD compared to the control (3 studies, 204 pts; RR = 0.42; 95% CI, 0.22, 0.80) and also improved eGFR in data pooled from RCTs with long follow-up times (>3 mo.) (4 studies, 357 pts; mean difference (MD) 6.82 mL/min/1.73 m²; 95% CI, 3.50, 10.15) and high methodological quality (blind design) (3 studies, 400 pts; MD 2.61 mL/min/1.73 m²; 95% CI, 0.23, 4.99). Conversely, no definite effects were apparently noticed on serum creatinine, proteinuria and albuminuria. CONCLUSIONS XOis may represent a promising tool for retarding disease progression in CKD patients. Future trials are awaited to confirm the generalizability of these findings to the whole CKD population.
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Affiliation(s)
- Anna Pisano
- CNR-Institute of Clinical Physiology, 89124 Reggio Calabria, Italy.
| | - Valeria Cernaro
- Chair of Nephrology, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy.
| | - Guido Gembillo
- Chair of Nephrology, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy.
| | | | - Michele Buemi
- Chair of Nephrology, Department of Clinical and Experimental Medicine, University of Messina, 98122 Messina, Italy.
| | - Davide Bolignano
- CNR-Institute of Clinical Physiology, 89124 Reggio Calabria, Italy.
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89
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Kim S, Kim HJ, Ahn HS, Oh SW, Han KH, Um TH, Cho CR, Han SY. Renoprotective effects of febuxostat compared with allopurinol in patients with hyperuricemia: A systematic review and meta-analysis. Kidney Res Clin Pract 2017; 36:274-281. [PMID: 28904879 PMCID: PMC5592895 DOI: 10.23876/j.krcp.2017.36.3.274] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/20/2017] [Accepted: 08/07/2017] [Indexed: 11/06/2022] Open
Abstract
Background Hyperuricemia is reported to be related to rapid progression of renal function in patients with chronic kidney disease (CKD). Allopurinol, a uric acid lowering agent, protects renal progression. However, it is not widely used in patients with CKD because of its serious adverse event. Febuxostat can be alternatively used for patients who are intolerable to allopurinol. We aimed to determine renoprotective effect and urate-lowering effect between the two drugs. Methods We performed a systematic review and meta-analysis of randomized controlled trials to assess the effects of febuxostat compared to allopurinol in patients with hyperuricemia. MEDLINE, Embase, and Cochrane Library databases were searched to identify research publications. Results Four relevant publications were selected from among 3,815 studies. No significant differences were found in the changes in serum creatinine from baseline between the febuxostat and allopurinol groups. Changes in estimated glomerular filtration rate (eGFR) were observed between the two groups at 1 month (mean difference 1.65 mL/min/1.73 m2, 95% confidence interval [CI] 0.38, 2.91 mL/min/1.73 m2; heterogeneity χ2 = 1.25, I2 = 0%, P = 0.01); however, the changes in eGFR were not significantly different at 3 months. A significant difference did exist in the changes in albuminuria levels from baseline between the febuxostat and allopurinol groups (mean difference −80.47 mg/gCr, 95% CI −149.29, −11.64 mg/gCr; heterogeneity χ2 = 0.81, I2 = 0%, P = 0.02). A significant difference was also observed in the changes in serum uric acid from baseline between the febuxostat and allopurinol groups (mean difference −0.92 mg/dL, 95% CI −1.29, −0.56 mg/dL; heterogeneity χ2 = 6.24, I2 = 52%, P < 0.001). Conclusion Febuxostat might be more renoprotective than allopurinol.
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Affiliation(s)
- Sollip Kim
- Department of Laboratory Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Hyun-Jung Kim
- Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea
| | - Hyeong-Sik Ahn
- Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea
| | - Se Won Oh
- Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Kum Hyun Han
- Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Tae-Hyun Um
- Department of Laboratory Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Chong-Rae Cho
- Department of Laboratory Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Sang Youb Han
- Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
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90
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Eleftheriadis T, Golphinopoulos S, Pissas G, Stefanidis I. Asymptomatic hyperuricemia and chronic kidney disease: Narrative review of a treatment controversial. J Adv Res 2017; 8:555-560. [PMID: 28748122 PMCID: PMC5512148 DOI: 10.1016/j.jare.2017.05.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/23/2017] [Accepted: 05/01/2017] [Indexed: 02/07/2023] Open
Abstract
Today there is plausible evidence both on experimental and epidemiological basis, that hyperuricemia represents a risk factor for the development and progression of chronic kidney disease (CKD). Nevertheless, the role of serum uric acid lowering treatment in CKD is still a matter of serious controversy. Review of randomised controlled trials, suggests that there may be an improvement of renal function with allopurinol treatment in CKD stage 3-5. However, these studies have included a relatively limited number of participants and provide insufficient information on adverse events and on the incidence of the end stage renal disease. Therefore, before adequately powered randomised, placebo-controlled trials are completed we cannot recommend treating asymptomatic hyperuricemia in patients with CKD.
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Affiliation(s)
| | | | | | - Ioannis Stefanidis
- Department of Nephrology, University of Thessaly, School of Medicine, Mezourlo Hill, 41110 Larissa, Greece
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91
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92
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Effects of topiroxostat in hyperuricemic patients with chronic kidney disease. Clin Exp Nephrol 2017; 22:337-345. [DOI: 10.1007/s10157-017-1452-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Accepted: 07/18/2017] [Indexed: 02/07/2023]
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93
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Abstract
There is increasing evidence that sodium glucose cotransporter 2 (SGLT2) inhibitors have renoprotective effects, as demonstrated by the renal analyses from clinical trials including Empagliflozin Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus Patients-Removing Excess Glucose (EMPA-REG OUTCOME), CANagliflozin Treatment And Trial Analysis versus SUlphonylurea (CANTATA-SU), and the dapagliflozin renal study. The potential mechanisms responsible are likely multifactorial, and direct renovascular and hemodynamic effects are postulated to play a central role. This report reviews the renal outcomes data from key SGLT2 inhibitor clinical trials, discusses the hypotheses for SGLT2 inhibitor-associated renoprotection, and considers the main renal safety issues associated with SGLT2 inhibitor treatment.
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Affiliation(s)
- Christoph Wanner
- Department of Medicine, Division of Nephrology, Würzburg University Clinic, Germany.
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94
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Abstract
There is increasing evidence that sodium glucose cotransporter 2 (SGLT2) inhibitors have renoprotective effects, as demonstrated by the renal analyses from clinical trials including Empagliflozin Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus Patients-Removing Excess Glucose (EMPA-REG OUTCOME), CANagliflozin Treatment And Trial Analysis versus SUlphonylurea (CANTATA-SU), and the dapagliflozin renal study. The potential mechanisms responsible are likely multifactorial, and direct renovascular and hemodynamic effects are postulated to play a central role. This report reviews the renal outcomes data from key SGLT2 inhibitor clinical trials, discusses the hypotheses for SGLT2 inhibitor-associated renoprotection, and considers the main renal safety issues associated with SGLT2 inhibitor treatment.
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Affiliation(s)
- Christoph Wanner
- Department of Medicine, Division of Nephrology, Würzburg University Clinic, Germany.
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95
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Ramirez MEG, Bargman JM. Treatment of asymptomatic hyperuricemia in chronic kidney disease: A new target in an old enemy - A review. J Adv Res 2017; 8:551-554. [PMID: 28748121 PMCID: PMC5512147 DOI: 10.1016/j.jare.2017.04.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 04/14/2017] [Accepted: 04/29/2017] [Indexed: 02/07/2023] Open
Abstract
Asymptomatic hyperuricemia is increasing in prevalence. There is a growing body of literature suggesting that uric acid has deleterious effects on vascular health and renal histological integrity. Several trials, reviewed herein, suggest that lowering the serum uric acid level is associated with a slowing in the rate of renal deterioration in those with chronic kidney disease. Given that there is little available in the general armamentarium to slow the rate of kidney deterioration, strong consideration could be given to the administration of agents or lifestyle changes that decrease uric acid production in hyperuricemic patients with deteriorating kidney function.
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Affiliation(s)
| | - Joanne M Bargman
- University Health Network, 200 Elizabeth Street 8N-840, Toronto M5G 2C4, Canada
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96
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Vargas-Santos AB, Neogi T. Management of Gout and Hyperuricemia in CKD. Am J Kidney Dis 2017; 70:422-439. [PMID: 28456346 DOI: 10.1053/j.ajkd.2017.01.055] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 01/21/2017] [Indexed: 02/07/2023]
Abstract
Hyperuricemia and gout, the clinical manifestation of monosodium urate crystal deposition, are common in patients with chronic kidney disease (CKD). Although the presence of CKD poses additional challenges in gout management, effective urate lowering is possible for most patients with CKD. Initial doses of urate-lowering therapy are lower than in the non-CKD population, whereas incremental dose escalation is guided by regular monitoring of serum urate levels to reach the target level of <6mg/dL (or <5mg/dL for patients with tophi). Management of gout flares with presently available agents can be more challenging due to potential nephrotoxicity and/or contraindications in the setting of other common comorbid conditions. At present, asymptomatic hyperuricemia is not an indication for urate-lowering therapy, though emerging data may support a potential renoprotective effect.
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Affiliation(s)
| | - Tuhina Neogi
- Clinical Epidemiology Research and Training Unit, Boston University School of Medicine, Boston, MA.
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97
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Diabetic nephropathy: Time to withhold development and progression - A review. J Adv Res 2017; 8:363-373. [PMID: 28540086 PMCID: PMC5430158 DOI: 10.1016/j.jare.2017.04.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/19/2017] [Accepted: 04/20/2017] [Indexed: 12/18/2022] Open
Abstract
The recent discoveries in the fields of pathogenesis and management of diabetic nephropathy have revolutionized the knowledge about this disease. Little was added to the management of diabetic nephropathy after the introduction of renin angiotensin system blockers. The ineffective role of the renin- angiotensin system blockers in primary prevention of diabetic nephropathy in type 1 diabetes mellitus necessitated the search for other early therapeutic interventions that target alternative pathogenic mechanisms. Among the different classes of oral hypoglycemic agents, recent studies highlighted the distinguished mechanisms of sodium glucose transporter 2 blockers and dipeptidyl peptidase-4 inhibitors that settle their renoprotective actions beyond the hypoglycemic effects. The introduction of antioxidant and anti-inflammatory agents to this field had also added wealth of knowledge. However, many of these agents are still waiting well-designed clinical studies in order to prove their beneficial therapeutic role. The aim of this review of literature is to highlight the recent advances in understanding the pathogenesis, diagnosis, the established and the potential renoprotective therapeutic agents that would prevent the development or the progression of diabetic nephropathy.
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98
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Qu LH, Jiang H, Chen JH. Effect of uric acid-lowering therapy on blood pressure: systematic review and meta-analysis. Ann Med 2017; 49:142-156. [PMID: 27689859 DOI: 10.1080/07853890.2016.1243803] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The purpose of this meta-analysis was to determine if uric acid-lowering therapy is associated with a decrease in blood pressure (BP) and serum creatinine levels. MATERIALS AND METHODS Medline, Cochrane, EMBASE, and Google Scholar databases were searched until 29 June 2016, with keywords: uric-acid-lowering therapy, allopurinol, febuxostat, uricosuric, and BP. Only randomized controlled trials were included. The primary outcomes were reduction in systolic BP (SBP) and diastolic BP (DBP), and secondary was reduction in serum creatinine level. RESULTS Patients treated with allopurinol had greater reduction in SBP (standardized difference in means [SDM] = 0.321, 95% confidence interval [CI]: 0.145-0.497, p < 0.001), DBP (SDM = 0.260, 95% CI: 0.102 to 0.417, p = 0.001), and creatinine level (SDM = 0.312, 95% CI: 0.008 to 0.615, p = 0.044) than control patients. Subgroup analysis showed that allopurinol significantly decreased SBP whether or not antihypertensive drugs were being administered; a decrease in DBP was only seen in patients receiving antihypertensive drugs. Low-dose allopurinol (≤300 mg/day) was more effective at reducing SBP than high-dose (>300 mg/day) in patients receiving antihypertensive drugs. CONCLUSIONS These results support that allopurinol decreases BP and creatinine levels in patients with hyperuricemia. KEY MESSAGES Allopurinol decreases SBP and DPB, and creatinine levels in patients with hyperuricemia. Allopurinol resulted in a significant decrease in SBP in patients with or without treatment of antihypertensive drugs. A dose of allopurinol of ≤300 mg per day might be more effective than a higher dose.
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Affiliation(s)
- Li-Hui Qu
- a Kidney Disease Center, The First Affiliated Hospital, School of Medicine, Zhejiang University , Hangzhou , P.R. China.,b Kidney Disease Immunology Laboratory, The Third Grade Laboratory , State Administration of Traditional Chinese Medicine , Beijing , P.R. China.,c Key Laboratory of Multiple Organ Transplantation , Ministry of Health , Hangzhou , P.R. China.,d Key Laboratory of Nephropathy , Hangzhou , P.R. China
| | - Hong Jiang
- a Kidney Disease Center, The First Affiliated Hospital, School of Medicine, Zhejiang University , Hangzhou , P.R. China.,b Kidney Disease Immunology Laboratory, The Third Grade Laboratory , State Administration of Traditional Chinese Medicine , Beijing , P.R. China.,c Key Laboratory of Multiple Organ Transplantation , Ministry of Health , Hangzhou , P.R. China.,d Key Laboratory of Nephropathy , Hangzhou , P.R. China
| | - Jiang-Hua Chen
- a Kidney Disease Center, The First Affiliated Hospital, School of Medicine, Zhejiang University , Hangzhou , P.R. China.,b Kidney Disease Immunology Laboratory, The Third Grade Laboratory , State Administration of Traditional Chinese Medicine , Beijing , P.R. China.,c Key Laboratory of Multiple Organ Transplantation , Ministry of Health , Hangzhou , P.R. China.,d Key Laboratory of Nephropathy , Hangzhou , P.R. China
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99
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Podocyte Injury and Albuminuria in Experimental Hyperuricemic Model Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:3759153. [PMID: 28337250 PMCID: PMC5350416 DOI: 10.1155/2017/3759153] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 01/20/2017] [Accepted: 01/29/2017] [Indexed: 02/07/2023]
Abstract
Although hyperuricemia is shown to accelerate chronic kidney disease, the mechanisms remain unclear. Accumulating studies also indicate that uric acid has both pro- and antioxidant properties. We postulated that hyperuricemia impairs the function of glomerular podocytes, resulting in albuminuria. Hyperuricemic model was induced by oral administration of 2% oxonic acid, a uricase inhibitor. Oxonic acid caused a twofold increase in serum uric acid levels at 8 weeks when compared to control animals. Hyperuricemia in this model was associated with the increase in blood pressure and the wall-thickening of afferent arterioles as well as arcuate arteries. Notably, hyperuricemic rats showed significant albuminuria, and the podocyte injury marker, desmin, was upregulated in the glomeruli. Conversely, podocin, the key component of podocyte slit diaphragm, was downregulated. Structural analysis using transmission electron microscopy confirmed podocyte injury in this model. We found that urinary 8-hydroxy-2'-deoxyguanosine levels were significantly increased and correlated with albuminuria and podocytopathy. Interestingly, although the superoxide dismutase mimetic, tempol, ameliorated the vascular changes and the hypertension, it failed to reduce albuminuria, suggesting that vascular remodeling and podocyte injury in this model are mediated through different mechanisms. In conclusion, vasculopathy and podocytopathy may distinctly contribute to the kidney injury in a hyperuricemic state.
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100
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Hutton HL, Ooi JD, Holdsworth SR, Kitching AR. The NLRP3 inflammasome in kidney disease and autoimmunity. Nephrology (Carlton) 2017; 21:736-44. [PMID: 27011059 DOI: 10.1111/nep.12785] [Citation(s) in RCA: 162] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 03/16/2016] [Accepted: 03/17/2016] [Indexed: 12/12/2022]
Abstract
The NLRP3 inflammasome is an intracellular platform that converts the pro-inflammatory cytokines interleukin (IL)-1β and IL-18 to their active forms in response to 'danger' signals, which can be either host or pathogen derived, and mediates a form of inflammatory cell death called pyroptosis. This component of the innate immune system was initially discovered because of its role in rare autoinflammatory syndromes called cryopyrinopathies, but it has since been shown to mediate injurious inflammation in a broad range of diseases. Inflammasome activation occurs in both immune cells, primarily macrophages and dendritic cells, and in some intrinsic kidney cells such as the renal tubular epithelium. The NLRP3 inflammasome has been implicated in the pathogenesis of a number of renal conditions, including acute kidney injury, chronic kidney disease, diabetic nephropathy and crystal-related nephropathy. The inflammasome also plays a role in autoimmune kidney disease, as IL-1β and IL-18 influence adaptive immunity through modulation of T helper cell subsets, skewing development in favour of Th17 and Th1 cells that are important in the development of autoimmunity. Both IL-1 blockade and two recently identified specific NLRP3 inflammasome blockers, MCC950 and β-hydroxybutyrate, have shown promise in the treatment of inflammasome-mediated conditions. These targeted therapies have the potential to be of benefit in the growing number of kidney diseases in which the NLRP3 inflammasome has been implicated.
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Affiliation(s)
- Holly L Hutton
- Centre for Inflammatory Diseases, Department of Medicine, Monash University, Melbourne, Victoria, Australia.,Department of Nephrology, Monash Health, Melbourne, Victoria, Australia
| | - Joshua D Ooi
- Centre for Inflammatory Diseases, Department of Medicine, Monash University, Melbourne, Victoria, Australia
| | - Stephen R Holdsworth
- Centre for Inflammatory Diseases, Department of Medicine, Monash University, Melbourne, Victoria, Australia.,Department of Nephrology, Monash Health, Melbourne, Victoria, Australia
| | - A Richard Kitching
- Centre for Inflammatory Diseases, Department of Medicine, Monash University, Melbourne, Victoria, Australia.,Department of Nephrology, Monash Health, Melbourne, Victoria, Australia.,Department of Paediatric Nephrology, Monash Health, Melbourne, Victoria, Australia
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