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Park EH, Choi ST, Song JS. Current state and prospects of gout treatment in Korea. Korean J Intern Med 2022; 37:719-731. [PMID: 35811361 PMCID: PMC9271716 DOI: 10.3904/kjim.2022.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/23/2022] [Indexed: 11/27/2022] Open
Abstract
Effective management of gout includes the following: appropriate control of gout flares; lifestyle modifications; management of comorbidities; and long-term urate-lowering therapy (ULT) to prevent subsequent gout flares, structural joint damage, and shortening of life expectancy. In addition to traditional treatments for gout, novel therapies have been introduced in recent years. Indeed, new recommendations for the management of gout have been proposed by various international societies. Although effective and safe medications to treat gout have been available, management of the disease has continued to be suboptimal, with poor patient adherence to ULT and failure to reach serum urate target. This review outlines recent progress in gout management, mainly based on the latest published guidelines, and specifically provides an update on efficient strategies for implementing treatment, efficacy and safety of specific medications for gout, and cardiovascular outcomes of ULT. In particular, we reviewed gout management approaches that can be applied to a Korean population.
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Affiliation(s)
- Eun Hye Park
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University Gwangmyeong Hospital, Gwangmyeong, Korea
| | - Sang Tae Choi
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Jung Soo Song
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
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Weaver JS, Vina ER, Munk PL, Klauser AS, Elifritz JM, Taljanovic MS. Gouty Arthropathy: Review of Clinical Manifestations and Treatment, with Emphasis on Imaging. J Clin Med 2021; 11:jcm11010166. [PMID: 35011907 PMCID: PMC8745871 DOI: 10.3390/jcm11010166] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/16/2021] [Accepted: 12/26/2021] [Indexed: 12/22/2022] Open
Abstract
Gout, a crystalline arthropathy caused by the deposition of monosodium urate crystals in the articular and periarticular soft tissues, is a frequent cause of painful arthropathy. Imaging has an important role in the initial evaluation as well as the treatment and follow up of gouty arthropathy. The imaging findings of gouty arthropathy on radiography, ultrasonography, computed tomography, dual energy computed tomography, and magnetic resonance imaging are described to include findings of the early, acute and chronic phases of gout. These findings include early monosodium urate deposits, osseous erosions, and tophi, which may involve periarticular tissues, tendons, and bursae. Treatment of gout includes non-steroidal anti-inflammatories, colchicine, glucocorticoids, interleukin-1 inhibitors, xanthine oxidase inhibitors, uricosuric drugs, and recombinant uricase. Imaging is critical in monitoring response to therapy; clinical management can be modulated based on imaging findings. This review article describes the current standard of care in imaging and treatment of gouty arthropathy.
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Affiliation(s)
- Jennifer S. Weaver
- Department of Radiology, University of New Mexico, Albuquerque, NM 87131, USA;
- Correspondence:
| | - Ernest R. Vina
- Department of Medicine, University of Arizona Arthritis Center, Tucson, AZ 85724, USA;
| | - Peter L. Munk
- Department of Radiology, University of British Columbia, Vancouver, BC V6T 1Z4, Canada;
- Department of Radiology, Vancouver General Hospital, Vancouver, BC V5Z 1M9, Canada
| | - Andrea S. Klauser
- Radiology Department, Medical University Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria;
| | - Jamie M. Elifritz
- Departments of Radiology and Pathology, University of New Mexico, Albuquerque, NM 87131, USA;
- New Mexico Office of the Medical Investigator, Albuquerque, NM 87131, USA
| | - Mihra S. Taljanovic
- Department of Radiology, University of New Mexico, Albuquerque, NM 87131, USA;
- Departments of Medical Imaging and Orthopaedic Surgery, University of Arizona, Tucson, AZ 85721, USA
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Abstract
BACKGROUND This is an updated Cochrane Review, first published in 2006 and updated in 2014. Gout is one of the most common rheumatic diseases worldwide. Despite the use of colchicine as one of the first-line therapies for the treatment of acute gout, evidence for its benefits and harms is relatively limited. OBJECTIVES To update the available evidence of the benefits and harms of colchicine for the treatment of acute gout. SEARCH METHODS We updated the search of CENTRAL, MEDLINE, Embase, Clinicaltrials.gov and WHO ICTRP registries to 28 August 2020. We did not impose any date or language restrictions in the search. SELECTION CRITERIA We considered published randomised controlled trials (RCTs) and quasi-randomised controlled trials (quasi-RCTs) evaluating colchicine therapy compared with another therapy (placebo or active) in acute gout; low-dose colchicine at clinically relevant doses compared with placebo was the primary comparison. The major outcomes were pain, participant global assessment of treatment success (proportion with 50% or greater decrease in pain from baseline up to 32 to 36 hours), reduction of inflammation, function of target joint, serious adverse events, total adverse events and withdrawals due to adverse events. DATA COLLECTION AND ANALYSIS We used standard methodological procedures as expected by Cochrane in this review update. MAIN RESULTS We included four trials (803 randomised participants), including two new trials, in this updated review. One three-arm trial compared high-dose colchicine (52 participants), low-dose colchicine (74 participants) and placebo (59 participants); one trial compared high-dose colchicine with placebo (43 participants); one trial compared low-dose colchicine with non-steroidal anti-inflammatory drugs (NSAIDs) (399 participants); and one trial compared low-dose colchicine with Chuanhu anti-gout mixture (traditional Chinese Medicine compound) (176 participants). We did not identify any trials comparing colchicine to glucocorticoids (by any route). The mean age of participants ranged from 51.2 to 70 years, and trial duration from 48 hours to 12 weeks. Two trials were at low risk of bias, one was possibly susceptible to selection bias (random sequence generation), reporting bias and other bias, and one open-label trial was at high risk of performance and detection bias. For the primary comparison, low-quality evidence from one trial (103 participants, downgraded for imprecision and bias) suggests low-dose colchicine may improve treatment outcome compared to placebo with little or no increased risk of adverse events. The number of people who reported treatment success (50% or greater pain reduction) at 32 to 36 hours was slightly larger with low-dose colchicine (418 per 1000) compared with placebo (172 per 1000; risk ratio (RR) 2.43, 95% confidence interval (CI) 1.05 to 5.64; absolute improvement 25% more reported success (7% more to 42% more, the 95% CIs include both a clinically important and unimportant benefit); relative change of 143% more people reported treatment success (5% more to 464% more). The incidence of total adverse events was 364 per 1000 with low-dose colchicine compared with 276 per 1000 with placebo: RR 1.32, 95% CI 0.68 to 2.56; absolute difference 9% more events with low-dose colchicine (9% fewer to 43% more, the 95% CIs include both a clinically important effect and no effect); relative change of 32% more events (32% fewer to 156% more). No participants withdrew due to adverse events or reported any serious adverse events. Pain, inflammation and function were not reported. Low-quality evidence (downgraded for imprecision and bias) from two trials (124 participants) suggests that high-dose colchicine compared to placebo may improve symptoms, but with increased risk of harms. More participants reported treatment success at 32 to 36 hours with high-dose colchicine (518 per 1000) compared with placebo (240 per 1000): RR 2.16, 95% CI 1.28 to 3.65, absolute improvement 28% (8% more to 46% more); more also had reduced inflammation at this time point with high-dose colchicine (504 per 1000) compared with placebo (48 per 1000): RR 10.50, 95% CI 1.48 to 74.38; absolute improvement 45% greater (22% greater to 68% greater); but more adverse events were reported with high-dose colchicine (829 per 1000 compared with 260 per 1000): RR 3.21, 95% CI 2.01 to 5.11, absolute difference 57% (26% more to 74% more). Pain and function were not reported. Low-quality evidence from a single trial comparing high-dose to low-dose colchicine indicates there may be little or no difference in benefit in terms of treatment success at 32 to 36 hours but more adverse events associated with the higher dose. Similarly, low-quality evidence from a single trial indicates there may also be little or no benefit of low-dose colchicine over NSAIDs in terms of treatment success and pain reduction at seven days, with a similar number of adverse events reported at four weeks follow-up. Reduction of inflammation, function of target joint and withdrawals due to adverse events were not reported in either of these trials, and pain was not reported in the high-dose versus low-dose colchicine trial. We were unable to estimate the risk of serious adverse events for most comparisons as there were few events reported in the trials. One trial (399 participants) reported three serious adverse (one in a participant receiving low-dose colchicine and two in participants receiving NSAIDs), due to reasons unrelated to the trial (low-quality evidence downgraded for bias and imprecision). AUTHORS' CONCLUSIONS We found low-quality evidence that low-dose colchicine may be an effective treatment for acute gout when compared to placebo and low-quality evidence that its benefits may be similar to NSAIDs. We downgraded the evidence for bias and imprecision. While both high- and low-dose colchicine improve pain when compared to placebo, low-quality evidence suggests that high-dose (but not low-dose) colchicine may increase the number of adverse events compared to placebo, while low-quality evidence indicates that the number of adverse events may be similar with low-dose colchicine and NSAIDs. Further trials comparing colchicine to placebo or other treatment will likely have an important impact on our confidence in the effect estimates and may change the conclusions of this review. There are no trials reporting the effect of colchicine in populations with comorbidities or in comparison with other commonly used treatments, such as glucocorticoids.
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Affiliation(s)
- Bayden J McKenzie
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University; Monash-Cabrini Department of Musculoskeletal Health and Clinical Epidemiology, Cabrini Health, Melbourne, Australia
| | | | - Renea V Johnston
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University; Monash-Cabrini Department of Musculoskeletal Health and Clinical Epidemiology, Cabrini Health, Melbourne, Australia
| | - Naomi Schlesinger
- Division of Rheumatology, Rutgers - Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Rachelle Buchbinder
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University; Monash-Cabrini Department of Musculoskeletal Health and Clinical Epidemiology, Cabrini Health, Melbourne, Australia
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Kumar M, Manley N, Mikuls TR. Gout Flare Burden, Diagnosis, and Management: Navigating Care in Older Patients with Comorbidity. Drugs Aging 2021; 38:545-557. [PMID: 34105100 DOI: 10.1007/s40266-021-00866-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2021] [Indexed: 10/21/2022]
Abstract
Gout is the most common form of inflammatory arthritis, and its incidence is highest in middle-aged and older patients. Adding to the diagnostic complexity, up to 50% of patients aged > 65 years present atypically, with subacute oligo- or polyarticular flares. Comorbidity and polypharmacy, common in older populations, affect real-world treatment decisions in gout management, and no specific guidelines are available to address these issues in these at-risk groups. Despite the growing public health burden posed by gout, suboptimal management has led to increased morbidity and substantial healthcare utilization and cost burden, as reflected by an increased incidence of emergency department visits and hospitalizations in recent years. Colchicine, nonsteroidal anti-inflammatory drugs, or glucocorticoids (oral, intraarticular, or intramuscular) should be considered as first-line agents for gout flare management. Urate-lowering therapy, with the goal of lowering and maintaining serum urate concentrations at < 6 mg/dL (< 360 μmol/L), is recommended to achieve optimal outcomes, including regression of tophi, reduction (or elimination) of flares, and reductions in total urate burden. In this review, we summarize the current burden posed by gout and discuss best practices in its diagnosis and management, focusing on best practices in the context of gout flare in older patients with comorbid conditions.
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Affiliation(s)
- Mukund Kumar
- Division of Rheumatology, Department of Internal Medicine, University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE, 68198-6270, USA.,Medicine and Research, VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA
| | - Natalie Manley
- Division of Geriatrics, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ted R Mikuls
- Division of Rheumatology, Department of Internal Medicine, University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE, 68198-6270, USA. .,Medicine and Research, VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA.
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Urits I, Smoots D, Anantuni L, Bandi P, Bring K, Berger AA, Kassem H, Ngo AL, Abd-Elsayed A, Manchikanti L, Urman R, Kaye AD, Viswanath O. Injection Techniques for Common Chronic Pain Conditions of the Hand: A Comprehensive Review. Pain Ther 2020; 9:129-142. [PMID: 32100225 PMCID: PMC7203307 DOI: 10.1007/s40122-020-00158-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION This compilation presents a comprehensive review of the literature on common chronic pain conditions of the hand. It briefly presents these common conditions with their biological background, diagnosis, and common management options. It then presents and compares the latest literature available for injection techniques to treat these diagnoses and compares the available evidence. METHODS A comprehensive literature review was performed in MEDLINE, PubMed, and Cochrane databases from 1996 to 2019 using the terms "hand pain", "injection techniques", "steroid injection", "chronic pain", "osteoarthritis", "rheumatoid arthritis", "carpal tunnel syndrome", "De Quervain's tenosynovitis", "ganglion cyst", "gout", "Raynaud's", and "stenosing tenosynovitis". RESULTS Hand pain is a common condition with 9.7% prevalence in men and 21.6% in women and can cause significant morbidity and disability. It also carries a significant cost to the individuals and the healthcare system, totaling in $4 billion dollars in 2003. Injection therapy is an alternative when conservative treatment fails. Osteoarthritis is the most common chronic hand pain syndrome and affects about 16% of the population. Its mechanism is largely mechanic, and as such, there is controversy if steroid injections are of benefit. Hyaluronic acid (HA) appears to provide substantial relief of pain and may increase functionality. More studies of HA are required to make a definite judgment on its efficacy. Similarly, steroid ganglion cyst injection may confer little benefit. Carpal tunnel syndrome is a compressive neuropathy, and only temporarily relieved with injection therapy. US-guidance provides significant improvement and, while severe cases may still require surgery, can provide a valuable bridge therapy to surgery when conservative treatment fails. Similar bridging treatments and increased efficacy under US-guidance are effective for stenosing tenosynovitis ("trigger finger"), though, interestingly, inflammatory background is associated with decreased effect in this case. When the etiology of the pain is inflammatory, such as in RA, corticosteroid (CS) injections provide significant pain relief and increased functionality. They do not, however, change the course of disease (unlike DMARDs). Another such example is De-Quervain tenosynovitis that sees good benefit from CS injections, and an increased efficacy with US-guidance, and similarly are CS injections for gout. For Raynaud's phenomenon, Botox injections have encouraging results, but more studies are needed to determine safety and efficacy, as well as the possible difference in effect between primary and secondary Raynaud's. CONCLUSIONS Chronic hand pain is a prevalent and serious condition and can cause significant morbidity and disability and interferes with independence and activities of daily living. Conservative treatment remains the first line of treatment; however, when first-line treatments fail, steroid injections can usually provide benefit. In some cases, HA or Botox may also be beneficial. US-guidance is increasing in hand injection and almost ubiquitously provides safer, more effective injections. Hand surgery remains the alternative for refractory pain.
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Affiliation(s)
- Ivan Urits
- Department of Anesthesiology, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
| | - Daniel Smoots
- Department of Anesthesiology, Creighton University School of Medicine, Omaha, NE, USA
| | - Lekha Anantuni
- Department of Anesthesiology, Creighton University School of Medicine, Omaha, NE, USA
| | - Prudhvi Bandi
- Department of Anesthesiology, Creighton University School of Medicine, Omaha, NE, USA
| | - Katie Bring
- Department of Anesthesiology, Creighton University School of Medicine, Omaha, NE, USA
| | - Amnon A Berger
- Department of Anesthesiology, Critical Care, and Pain Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Hisham Kassem
- Department of Anesthesiology, Mount Sinai Medical Center, Miami Beach, FL, USA
| | - Anh L Ngo
- Department of Pain Medicine, Pain Specialty Group, Newington, NH, USA
- Harvard Medical School, Boston, MA, USA
| | - Alaa Abd-Elsayed
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | | | - Richard Urman
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Alan D Kaye
- Department of Anesthesiology, Louisiana State University Health Shreveport, Shreveport, LA, USA
| | - Omar Viswanath
- Department of Anesthesiology, Creighton University School of Medicine, Omaha, NE, USA
- Valley Anesthesiology and Pain Consultants-Envision Physician Services, Phoenix, AZ, USA
- Department of Anesthesiology, University of Arizona College of Medicine-Phoenix, Phoenix, AZ, USA
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Engel B, Just J, Bleckwenn M, Weckbecker K. Treatment Options for Gout. DEUTSCHES ARZTEBLATT INTERNATIONAL 2018; 114:215-222. [PMID: 28434436 DOI: 10.3238/arztebl.2017.0215] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 07/21/2016] [Accepted: 12/29/2016] [Indexed: 01/19/2023]
Abstract
BACKGROUND 1-2% of adults in Germany suffer from gout. Gout is one of the few rheumatological diseases that can be cured. It arises through the deposition of uric acid crystals in joints as a result of hyperuricemia. Painful redness and swelling of the affected joints are typical findings. Multiple pertinent guidelines and treatment recommendations have been published, but there is reason to believe that patients with gout are not always treated accordingly. METHODS This review is based on relevant publications from the years 2000-2016 that were retrieved by a selective search in the Cochrane and PubMed databases. RESULTS In a person with normal renal function, asymptomatic hyperuricemia is not an indication for treatment to lower the serum uric acid level. The drugs of first choice for acute gouty arthritis are nonsteroidal antiinflammatory drugs (NSAID), corticosteroids, and colchicine. Treatment with xanthine oxidase inhibitors (XOI) or uricosuric drugs is indicated for patients with a recurrent or severe course; the target uric acid value is <6 mg/dL. Long-term treatment should be initiated only after resolution of the acute attack. For patients with refractory gout, lesinurad (approved in February 2016) in combination with XOI is a new treatment option that can be considered. Comprehensive patient education and counseling is an important component of the treatment of patients with gout. Regular laboratory follow-up is necessary as well. CONCLUSION The prevalence of gout is rising around the world. Patients with gout could benefit greatly from consistent implementation of the existing treatment guidelines and recommendations. In the future, controlled trials should be conducted to determine the best time to start treatment and the optimal target level for the serum uric acid concentration in terms of a risk/benefit analysis.
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Affiliation(s)
- Bettina Engel
- Institute of General Practice and Family Medicine, University Hospital Bonn
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Abstract
Gout is common in the elderly, affecting an estimated 4.7 million people aged > 60 years in the USA alone. The incidence and prevalence of gout increases, and male predisposition to gout reduces, with increasing age. The elderly have more comorbidities, and gout manifests differently, with more frequent involvement of knees, ankles, and wrists at disease onset, systemic upset, and tophi. Comorbidities and polypharmacy make the management of gout flares challenging in this population. Intra-articular corticosteroid injection remains the treatment of choice for accessible joints, oral prednisolone is preferred over low-dose colchicine, and non-steroidal anti-inflammatory drugs (NSAIDs) are best avoided. Xanthine oxidase inhibitors (XOI) remain the first-line treatment for hyperuricemia in the elderly. Arhalofenate, an emerging uricosuric anti-inflammatory drug, prevents gout flares while reducing serum urate. It may be particularly relevant in the treatment of gout in the elderly as they are unable to tolerate long-term colchicine for flare prophylaxis and frequently have contraindications to corticosteroids and NSAIDs. However, given its modest urate-lowering effect, it can only be used in combination with an XOI, and the safety and efficacy of this drug has not been examined in the elderly or in those with chronic kidney disease. Diuretics and beta-blockers should be discontinued where feasible, whereas low-dose aspirin can be continued if otherwise indicated.
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Affiliation(s)
- Abhishek Abhishek
- Division of Rheumatology, Orthopaedics, and Dermatology, School of Medicine, University of Nottingham, Nottingham, UK.
- Academic Rheumatology, Clinical Sciences Building, City Hospital Nottingham, Nottingham, NG5 1PB, UK.
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An update on the management of gout. Drug Ther Bull 2018; 56:9-12. [PMID: 29326278 DOI: 10.1136/dtb.2018.1.0578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Gout is the most common form of inflammatory arthritis and its incidence in the UK has steadily increased from 1.5% in 1997 to 2.5% in 2012.1,2 It is characterised by deposition of monosodium urate crystals in joints and tissues and usually presents with intermittent painful attacks followed by long periods of remission.3 It has been suggested that the management of gout in the UK remains suboptimal.1 In 2004, we concluded that there was a woeful lack of evidence to guide treatment or prophylaxis for gout, particularly with regard to choice of drug or doses.4 The introduction of new drugs and new evidence on the efficacy and safety of treatment options has led the European League Against Rheumatism (EULAR) and the British Society of Rheumatology (BSR) to update their guidelines on the management of gout.2,5 Nevertheless, there are differing views on target serum uric acid (SUA) levels and the role of urate lowering treatment (ULT).2,5-7 Here, we review the latest guidance on the management of gout and consider the role of long-term ULT.
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Jhang JJ, Lu CC, Ho CY, Cheng YT, Yen GC. Protective Effects of Catechin against Monosodium Urate-Induced Inflammation through the Modulation of NLRP3 Inflammasome Activation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:7343-7352. [PMID: 26234731 DOI: 10.1021/acs.jafc.5b02605] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Gouty inflammation results from the stimulation of monosodium urate (MSU). Interleukin-1β (IL-1β) secretion is the primary clinical manifestation of MSU attack, and MSU activates IL-1β through a nucleotide-binding oligomerization domain-like receptor containing pyrin domain 3 (NLRP3) inflammasome. This study investigated the protective effect and underlying mechanism of naturally occurring phenolic compounds on MSU-induced inflammation in vivo and in vitro. A screening of phenolic compounds revealed that gallic acid and catechin exhibited the most potent free radical scavenging activities. Subcutaneous injection of gallic acid or catechin significantly reduced MSU-induced IL-1β and IL-6 secretion in C57BL/6 mice. However, only catechin inhibited MSU-induced IL-1β secretion and NLRP3 inflammasome activation in MSU-challenged THP-1 cells. MSU-triggered mitochondrial reactive oxygen species (MtROS) production and intracellular calcium levels were significantly decreased by treatment with catechin in THP-1 cells. Catechin treatment also up-regulated Bcl-2 levels and restored MSU-induced mitochondrial transmembrane potential impairment. These results indicate that the protective effects of catechin on MSU-induced IL-1β secretion are associated with modulation of mitochondrial damage. It also suggests that catechin has the potential to protect gout attack by modulation of NLRP3 inflammasome activation.
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Affiliation(s)
- Jhih-Jia Jhang
- Department of Food Science and Biotechnology, National Chung Hsing University , 250 Kuokuang Road, Taichung 40227, Taiwan
| | - Chi-Cheng Lu
- Department of Food Science and Biotechnology, National Chung Hsing University , 250 Kuokuang Road, Taichung 40227, Taiwan
| | - Cheng-Ying Ho
- Department of Food Science and Biotechnology, National Chung Hsing University , 250 Kuokuang Road, Taichung 40227, Taiwan
| | - Yu-Ting Cheng
- Department of Food Science and Biotechnology, National Chung Hsing University , 250 Kuokuang Road, Taichung 40227, Taiwan
| | - Gow-Chin Yen
- Department of Food Science and Biotechnology, National Chung Hsing University , 250 Kuokuang Road, Taichung 40227, Taiwan
- Agricultural Biotechnology Center, National Chung Hsing University , Taichung 40227, Taiwan
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Abstract
BACKGROUND This is an update of a Cochrane review first published in 2006. Gout is one of the most common rheumatic diseases worldwide. Despite the use of colchicine as one of the first-line therapies for the treatment of acute gout, evidence for its benefits and harms is relatively limited. OBJECTIVES To evaluate the benefits and harms of colchicine for the treatment of acute gout. SEARCH METHODS We searched the following electronic databases from inception to April 2014: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE and EMBASE. We did not impose any date or language restrictions in the search. We also handsearched conference proceedings of the American College of Rheumatology and the European League against Rheumatism (2010 until 2013) and reference lists of identified studies. We searched the clinical trials register clinicaltrials.gov and the WHO trials register. SELECTION CRITERIA We considered published randomised controlled trials (RCTs) and controlled clinical trials (CCTs) evaluating colchicine therapy compared with another therapy (active or placebo) in acute gout. The primary benefit outcome of interest was pain, defined as a proportion with 50% or greater decrease in pain, and the primary harm outcome was study participants withdrawal due to adverse events. DATA COLLECTION AND ANALYSIS Two authors independently screened search results for relevant studies, extracted data into a standardised form and assessed the risk of bias of included studies. We pooled data if deemed to be sufficiently clinically homogeneous. We assessed the quality of the body of evidence for each outcome using the GRADE approach. MAIN RESULTS Two RCTs (124 participants) were included in this updated review, including one new RCT. We considered one trial to be at low risk of bias, while we considered the newly included trial to be at unclear risk of bias. Both trials included a placebo and a high-dose colchicine arm, although the colchicine regimens varied. In one trial 0.5 mg colchicine was given every two hours until there was either complete relief of symptoms or toxicity and the total doses were not specified. In the other trial a total of 4.8 mg colchicine was given over six hours. The newly identified trial also included a low-dose colchicine arm (total 1.8 mg over one hour).Based upon pooled data from two trials (124 participants), there is low-quality evidence that a greater proportion of people receiving high-dose colchicine experience a 50% or greater decrease in pain from baseline up to 32 to 36 hours compared with placebo (35/74 in the high-dose colchicine group versus 12/50 in the placebo group (risk ratio (RR) 2.16, 95% confidence interval (CI) 1.28 to 3.65), with a number needed to treat to benefit (NNTB) of 4 (95% CI 3 to 12). However, the total number of adverse events (diarrhoea, vomiting or nausea) is greater in those who receive high-dose colchicine versus placebo (62/74 in the high-dose colchicine group versus 11/50 in the placebo group (RR 3.81, 95% CI 2.28 to 6.38), with a number needed to treat to harm (NNTH) of 2 (95% CI 2 to 5). Only one trial included reduction of inflammation as part of a composite measure comprising pain, tenderness, swelling and erythema, each graded on a four-point scale (none 0 to severe 3) to derive a maximum score for any one joint of 12. They reported the proportion of people who achieved a 50% reduction in this composite score. Based upon one trial (43 participants), there was low-quality evidence that more people in the high-dose colchicine group had a 50% or greater decrease in composite score from baseline up to 32 to 36 hours than people in the placebo group (11/22 in the high-dose colchicine group versus 1/21 in the placebo group (RR 10.50, 95% CI 1.48 to 74.38) and 45% absolute difference).Based upon data from one trial (103 participants), there was low-quality evidence that low-dose colchicine is more efficacious than placebo with respect to the proportion of people who achieve a 50% or greater decrease in pain from baseline to 32 to 36 hours (low-dose colchicine 31/74 versus placebo 5/29 (RR 2.43, 95% CI 1.05 to 5.64)), with a NNTB of 5 (95% CI 2 to 20). There are no additional harms in terms of adverse events (diarrhoea, nausea or vomiting) with low-dose colchicine compared to placebo (19/74 and 6/29 respectively (RR 1.24, 95% CI 0.55 to 2.79)).Based upon data from one trial (126 participants), there is low-quality evidence that there are no additional benefits in terms of the proportion of people achieving 50% or greater decrease in pain from baseline up to 32 to 36 hours with high-dose colchicine compared to low-dose (19/52 and 31/74 respectively (RR 0.87, 95% CI 0.56 to 1.36). However, there were statistically significantly more adverse events in those who received high-dose colchicine (40/52 versus 19/74 in the low-dose group (RR 3.00, 95% CI 1.98 to 4.54)), with a NNTH of 2 (95% CI 2 to 3).No trials reported function of the target joint, patient-reported global assessment of treatment success, health-related quality of life or withdrawals due to adverse events. We identified no studies comparing colchicine to non-steroidal anti-inflammatory drugs (NSAIDs) or other active treatments such as glucocorticoids (by any route). AUTHORS' CONCLUSIONS Based upon only two published trials, there is low-quality evidence that low-dose colchicine is likely to be an effective treatment for acute gout. We downgraded the evidence because of a possible risk of selection and reporting biases and imprecision. Both high and low-dose colchicine improve pain when compared to placebo. While there is some uncertainty around the effect estimates, compared with placebo, high-dose but not low-dose colchicine appears to result in a statistically significantly greater number of adverse events. Therefore low-dose colchicine may be the preferred treatment option. There are no trials about the effect of colchicine in populations with comorbidities or in comparison with other commonly used treatments, such as NSAIDs and glucocorticoids.
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Affiliation(s)
- Irene van Echteld
- Department of Rheumatology, St Elisabeth Hospital, Hilvarenbeekseweg 60, Tilburg, Netherlands, 5022GC
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Abstract
BACKGROUND Although lifestyle interventions are often recommended in the management of chronic gout, the evidence from trial data of the benefits and safety of using lifestyle interventions for treating acute gout attacks have not previously been examined in a systematic review. OBJECTIVES The objective of this systematic review was to evaluate the benefits and safety of lifestyle interventions for the treatment of people with acute gout. SEARCH METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE and EMBASE for studies (up to 5 April 2013). We also searched the 2010 to 2011 American College of Rheumatology (ACR) and European League Against Rheumatism (EULAR) abstracts and performed a handsearch of the reference lists of included articles. SELECTION CRITERIA Studies were included if they were randomised or quasi-randomised controlled trials which compared lifestyle interventions to another therapy (active or placebo) in patients with acute gout. Outcomes of interest were the change in participant-reported pain in the target joint(s), target joint inflammation and function, health-related quality of life (HRQoL), patient global assessment, study participant withdrawals due to adverse events (AEs) and serious adverse events (SAEs). DATA COLLECTION AND ANALYSIS Two review authors independently applied methods recommended by The Cochrane Collaboration for the selection, appraisal, data collection and synthesis of studies. We assessed the quality of the body of evidence for each outcome using the GRADE approach. MAIN RESULTS Only one study (19 participants) at high risk of bias was included in the review. Patients were randomised to receive oral prednisolone and colchicine with or without concomitant topical ice therapy. Topical ice therapy provided significant additional benefit over oral prednisolone and colchicine alone with respect to pain, but did not significantly reduce swelling during acute gout episodes. Mean pain reduction with standard medical treatment was 4.4 cm on a 0 to 10 cm visual analogue scale (VAS) after one week; the addition of topical ice reduced pain by an additional 3.33 cm (95% CI 5.84 to 0.82), or an absolute reduction of 33% (8% to 58% reduction). Joint swelling was reduced by a mean of 3.8 cm in the standard medical treatment group; the addition of topical ice therapy did not reduce swelling significantly (mean difference (MD) 2.07 cm, 95% CI -1.56 to 5.70). Target joint function, HRQoL, patient global assessment, study participant withdrawals due to AEs and SEAs were not reported in this study. AUTHORS' CONCLUSIONS There is low quality evidence, from a single trial at high risk of bias, that the addition of topical ice therapy to oral prednisolone and colchicine for oligoarticular attacks of acute gout results in significantly greater pain reduction at one week.
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Affiliation(s)
- John HY Moi
- The Royal Melbourne HospitalDepartment of RheumatologyGrattan StreetParkvilleVictoriaAustralia3050
| | - Melonie K Sriranganathan
- University Hospital Southampton NHS Foundation TrustDepartment of RheumatologyTremona RoadSouthamptonHampshireUKSO16 6YD
| | - Christopher J Edwards
- University Hospital Southampton NHS Foundation TrustDepartment of RheumatologyTremona RoadSouthamptonHampshireUKSO16 6YD
| | - Rachelle Buchbinder
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash UniversityMonash Department of Clinical Epidemiology, Cabrini HospitalSuite 41, Cabrini Medical Centre183 Wattletree RoadMalvernVictoriaAustralia3144
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Sivera F, Andrés M, Carmona L, Kydd ASR, Moi J, Seth R, Sriranganathan M, van Durme C, van Echteld I, Vinik O, Wechalekar MD, Aletaha D, Bombardier C, Buchbinder R, Edwards CJ, Landewé RB, Bijlsma JW, Branco JC, Burgos-Vargas R, Catrina AI, Elewaut D, Ferrari AJL, Kiely P, Leeb BF, Montecucco C, Müller-Ladner U, Ostergaard M, Zochling J, Falzon L, van der Heijde DM. Multinational evidence-based recommendations for the diagnosis and management of gout: integrating systematic literature review and expert opinion of a broad panel of rheumatologists in the 3e initiative. Ann Rheum Dis 2013; 73:328-35. [PMID: 23868909 PMCID: PMC3913257 DOI: 10.1136/annrheumdis-2013-203325] [Citation(s) in RCA: 158] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We aimed to develop evidence-based multinational recommendations for the diagnosis and management of gout. Using a formal voting process, a panel of 78 international rheumatologists developed 10 key clinical questions pertinent to the diagnosis and management of gout. Each question was investigated with a systematic literature review. Medline, Embase, Cochrane CENTRAL and abstracts from 2010-2011 European League Against Rheumatism and American College of Rheumatology meetings were searched in each review. Relevant studies were independently reviewed by two individuals for data extraction and synthesis and risk of bias assessment. Using this evidence, rheumatologists from 14 countries (Europe, South America and Australasia) developed national recommendations. After rounds of discussion and voting, multinational recommendations were formulated. Each recommendation was graded according to the level of evidence. Agreement and potential impact on clinical practice were assessed. Combining evidence and clinical expertise, 10 recommendations were produced. One recommendation referred to the diagnosis of gout, two referred to cardiovascular and renal comorbidities, six focused on different aspects of the management of gout (including drug treatment and monitoring), and the last recommendation referred to the management of asymptomatic hyperuricaemia. The level of agreement with the recommendations ranged from 8.1 to 9.2 (mean 8.7) on a 1-10 scale, with 10 representing full agreement. Ten recommendations on the diagnosis and management of gout were established. They are evidence-based and supported by a large panel of rheumatologists from 14 countries, enhancing their utility in clinical practice.
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Affiliation(s)
- Francisca Sivera
- Department Reumatologia, Hospital General Universitario de Elda, , Elda, Spain
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