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Kim YE, Ahn SM, Oh JS, Hong S, Lee CK, Yoo B, Kim YG. Incidence of and risk factors for myelodysplastic syndrome in patients with rheumatologic diseases. Rheumatology (Oxford) 2024; 63:1305-1312. [PMID: 37498607 DOI: 10.1093/rheumatology/kead374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 06/22/2023] [Accepted: 07/02/2023] [Indexed: 07/28/2023] Open
Abstract
OBJECTIVE We investigated the incidence of and risk factors for myelodysplastic syndrome (MDS) in patients with rheumatologic disease. METHODS We conducted a retrospective cohort study of patients who were diagnosed with rheumatologic diseases at a tertiary care hospital between May 2009 and July 2022 and identified the patients who were subsequently diagnosed with MDS. Each patient with MDS was matched with five age- and sex-matched controls chosen from the cohort of patients with each specific rheumatologic disease. RESULTS During a total follow-up of 55 841 person-years (PY), MDS occurred in 64 patients, yielding an incidence rate of 1.15/1000 PY {median age 57.0 years [interquartile range (IQR) 41.0-69.0], median duration to MDS diagnosis 6.5 years (IQR 3.0-9.0)]. In an age-matched analysis, SLE was a significant risk factor for MDS [adjusted hazard ratio 2.61 (CI 1.19, 36.06), P = 0.01]. Refractory cytopenia with multilineage dysplasia was the most common phenotype of MDS (35.9%), and more than half of the patients had karyotypes with a favourable prognosis (54.7%). Compared with matched controls, RA, SLE and AS patients with MDS had lower levels of haemoglobin at the time of diagnosis of rheumatologic disease. Furthermore, the MDS patients with SLE and Behçet's disease had higher levels of glucocorticoid use in terms of frequency of use and mean dose than control patients. CONCLUSION SLE is a significant risk factor for MDS among patients with rheumatologic diseases. A lower haemoglobin level at the time of diagnosis of rheumatologic disease was associated with the future development of MDS.
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Affiliation(s)
- Young-Eun Kim
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Soo Min Ahn
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ji Seon Oh
- Information Medicine, Big Data Research Center, Asan Medical Center, Seoul, Republic of Korea
| | - Seokchan Hong
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang-Keun Lee
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Bin Yoo
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yong-Gil Kim
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Kim YE, Ahn SM, Oh JS, Kim YG, Lee CK, Yoo B, Hong S. Febuxostat dose requirement according to renal function in patients who achieve target serum urate levels: A retrospective cohort study. Joint Bone Spine 2024; 91:105668. [PMID: 38036062 DOI: 10.1016/j.jbspin.2023.105668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/18/2023] [Accepted: 11/24/2023] [Indexed: 12/02/2023]
Abstract
OBJECTIVES To determine the febuxostat dose requirement according to renal function in patients who achieve target serum urate (SU) levels. METHODS Of 3153 gout patients who underwent febuxostat treatment, 873 patients with an initial SU level>6mg/dL were included and categorized by the estimated glomerular filtration rate: normal, chronic kidney disease (CKD) stage 3, and stages 4-5. Ninety-five patients with insufficient follow-up were further excluded. The dose of febuxostat in patients who achieved the SU target (< 6mg/dL) was defined as the average daily dosage at the time of SU target achievement. RESULTS The cohort of 778 gout patients had a median age of 52.0 years (IQR, 41.0-63.0) and comprised 711 (91.4%) men. The mean SU at febuxostat initiation was higher in the CKD 4-5 (9.6 [± 3.1] mg/dL) than in the other groups (CKD 3, 8.7 [± 1.7]; normal, 8.4 [± 1.7]; P<0.001). Patients achieved target SU at a median of 4.0 (1.9-9.6) months and in those who achieved target SU, the dose of febuxostat at the time of SU target achievement was significantly lower in the CKD 4-5 group (50.0 [± 16.5] mg) than in the other groups (vs. CKD stage 3, 60.0 [± 19.5] mg; P<0.01, vs. normal, 60.0 [± 19.8] mg; P<0.01). Furthermore, CKD stage 4-5 had a negative correlation with the febuxostat dose requirement (Beta: -2.334, P<0.05). CONCLUSION Among patients who achieved SU target, those with severely decreased renal function (CKD 4-5) required a lower febuxostat dose to achieve the target SU level compared to patients with normal or mild renal impairment.
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Affiliation(s)
- Young-Eun Kim
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - Soo Min Ahn
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - Ji Seon Oh
- Information Medicine, Big Data Research Center, Asan Medical Center, Seoul, Republic of Korea
| | - Yong-Gil Kim
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - Chang-Keun Lee
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - Bin Yoo
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - Seokchan Hong
- Department of Rheumatology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea.
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Jin Z, Wang Z, Wang R, Xiang S, Zhang W, Tang Y, Tong P, Gu Y, Lv S. Global burden and epidemic trends of gout attributable to high body mass index from 1990 to 2019. Arch Med Sci 2024; 20:71-80. [PMID: 38414454 PMCID: PMC10895944 DOI: 10.5114/aoms/175469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 11/19/2023] [Indexed: 02/29/2024] Open
Abstract
Introduction Gout is an inflammatory and metabolic disease characterized by arthritis and elevation of the serum uric acid (SUA) level. More and more studies have shown that high body mass index (BMI) has become one of the most important risk factors for gout. Material and methods We used the data of gout burden attributed to high body mass index (BMI) from global burden of disease (GBD) study 2019 to provide insights for reducing the global burden of gout. Results From 1990 to 2019, the prevalence and DALYs of gout caused by high BMI worldwide has been increasing. The burden of gout caused by high BMI is heavier in the elderly male group and regions with high SDI worldwide. Conclusions Our findings provide evidence for the burden of gout caused by high BMI. Developing a weight management plan and lifestyle habits for groups severely affected by gout will effectively reduce the global disease and economic burden.
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Affiliation(s)
- Zhaokai Jin
- The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China
| | - Zhengming Wang
- Shi’s Center of Orthopedics and Traumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Institute of Traumatology and Orthopedics, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Rui Wang
- Guanghua Hospital, Affiliated to Shanghai University of Traditional Chinese Medicine, Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Sicheng Xiang
- The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China
| | - Weiqing Zhang
- The Second Affiliated Hospital of Zhejiang Chinese Medical University (Xinhua Hospital of Zhejiang Province), Hangzhou, Zhejiang, China
| | - Yi Tang
- The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China
| | - Peijian Tong
- The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China
| | - Yong Gu
- Translational Medical Innovation Center, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, Jiangsu, China
- Department of Orthopedics, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, Jiangsu, China
| | - Shuaijie Lv
- The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China
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Hua Q, Liu X, Luo Y, Lin Y, Zheng K, Xia A, Yang Q. The Chinese patent medicine Tongfengding capsule for gout in adults: a systematic review of safety and effectiveness. Adv Rheumatol 2023; 63:32. [PMID: 37464372 DOI: 10.1186/s42358-023-00310-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 06/12/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND Gout is a common inflammatory arthritis caused by increased serum uric acid levels. Untreated or insufficiently treated gout can lead to deposition of monosodium urate crystals in joints, cartilage, and kidneys. Although Tongfengding capsules, a Chinese patent medicine, have long been used to treat gout, their effects and safety have not been reviewed systematically. This study evaluated its efficacy and safety for gout in adults. METHODS Randomized controlled trials involving Tongfengding capsule for gout in adults were searched from PubMed, EMBASE, Cochrane Central Register of Controlled Trials, CBM, CNKI, and VIP databases, and analyzed using the Cochrane Handbook criteria. The primary outcome measures were the total effective rate. The secondary outcome measures including the blood uric acid (BUA), 24-h urinary total protein (24-h UTP), blood urea nitrogen (BUN), interleukin (IL)-6, IL-8, tumor necrosis factor-alpha (TNF-α) and adverse effects. The risk of bias was evaluated in all included studies. RevMan ver. 5.3.5 and GRADE profiler was used for data analysis and assessing the quality of evidence, respectively. RESULTS Six studies (n = 607 Chinese participants) were included. Tongfengding capsules plus conventional treatment significantly increased the total effective rate (RR 1.21, 95% CI 1.11-1.33), while reducing the BUA (MD - 66.05 µmol/L, 95% CI - 81.26 to - 50.84), 24-h UTP (MD - 0.83 g/24 h, 95% CI - 0.96 to - 0.70), BUN (MD - 0.90 mmol/L, 95% CI - 1.60 to - 0.20), IL-6 (MD - 6.99 ng/L, 95% CI - 13.22 to - 0.75), IL-8 (MD - 12.17 ng/L, 95% CI - 18.07 to - 6.27), TNF-α (MD - 8.50 ng/L, 95% CI - 15.50 to - 1.51), and adverse effects (RR 0.21, 95% CI 0.04-0.95). CONCLUSION Tongfengding capsules plus conventional treatment is safe and beneficial for adults with gout compared with conventional treatment.
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Affiliation(s)
- Qiaoli Hua
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China
- Department of Emergency, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, China
| | - Xusheng Liu
- Department of Nephrology, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China
- Department of Nephrology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, China
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, Guangzhou, 510120, China
| | - Yang Luo
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Yujie Lin
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Kairong Zheng
- Department of Nephrology, General Hospital of Southern Theatre Command, PLA, Guangzhou, 510010, China
- Department of Hemodialysis, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China
| | - Ai Xia
- The Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Department of Hemodialysis, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120, China
| | - Qianchun Yang
- Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, China.
- Second Outpatient Department, First Affiliated Hospital, Guangzhou University of Chinese Medicine, No. 231 Xingang West Road, Haizhu District, Guangzhou, 510000, China.
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550000, China.
- Zihetang Shangdu Traditional Chinese Medicine Clinic, Guangzhou, 510000, China.
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Liu Q, Zhao S, Chen W. Clinical features, treatment outcomes and prognostic factors of allopurinol-induced DRESS in 52 patients. J Clin Pharm Ther 2022; 47:1368-1378. [PMID: 35971667 DOI: 10.1111/jcpt.13667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/10/2022] [Accepted: 02/24/2022] [Indexed: 11/27/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Allopurinol-induced drug reaction with eosinophilia and systemic symptoms (DRESS) is a rare but serious and potentially life-threatening drug hypersensitivity syndrome. In this study, we aimed to investigate the clinical features, treatment outcomes, and prognostic factors of allopurinol-induced DRESS. METHODS Case reports of allopurinol-induced DRESS published by China from January 2000 to August 2021 were retrieved from CNKI, Wan Fang, VIP, and PubMed databases for analysis. RESULTS AND DISCUSSION This study included 52 patients, consisting of 41 (78.8%) males and 11 (21.2%) females (M:F = 3.7:1). The mean of age was 56.1 ± 17.1 years (range: 18-86 years). The mean of latency periods was 24.6 ± 15.0 days (range:1-63 days). Most patients presented with fever, cutaneous eruption, eosinophilia, lymphadenopathy, and facial edema. 36/52 (69.2%) patients showed two or more internal organs involved. Liver and kidney injuries were the most common visceral manifestation. Pulmonary involvement (34.6%), cardiac involvement (25.0%) and gastrointestinal involvement (21.2%) were relatively less known but severe complications. 2/52 (3.8%) patients showed nervous system involved, presenting as leukoencephalopathy or peripheral neuropathy. 2/52 (3.8%) patients presented with secondary hemophagocytic lymphohistiocytosis.1/52 (1.9%) patient developed pure red cell aplasia and 1/52 (1.9%) patient developed painless thyroiditis. HLA*B 58:01 allele was tested in 18/52 (34.6%) patients. 16/18 (88.9%) cases were positive. 48/52 (92.3%) patients were treated with systemic corticosteroids. 16/52 (30.8%) patients were cured, 23/52 (44.2%) patients received partial recovery, and 13/52 (25.0%) patients were died. Septic shock, gastrointestinal bleeding and multiple organ failure were the leading causes of death. Advanced age, underlying cardiovascular disease, chronic kidney disease and high dose of allopurinol, infection and internal organ involvement (including kidney, heart, lung and gastrointestinal tract) were risk factors for death. WHAT IS NEW AND CONCLUSION We explored clinical features, treatment outcomes and prognostic factors of 52 allopurinol-induced DRESS cases in China. Ethnicity, especially Han Chinese, and positive HLA-B*58:01 allele are the clearest risk factors so far. Advanced age, underlying cardiovascular disease, chronic kidney disease and high dose of allopurinol, infection and internal organ involvement (including kidney, heart, lung and gastrointestinal tract) were associated with poorer outcomes. Early identification and discontinuation of the causative drug are crucial to the management of DRESS. For patients with severe disease, corticosteroids are recommended as the first-line therapy. However, further studies are needed to address diagnostic criteria of DRESS for early diagnosis, as well as to develop standardized corticosteroid treatment regimens.
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Affiliation(s)
- Qianling Liu
- Department of Nephrology, Key Laboratory of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Ministry of Health and Guangdong Province, Guangzhou, P.R. China.,Department of Nephrology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, P.R. China
| | - Sumei Zhao
- Department of Nephrology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, P.R. China
| | - Wei Chen
- Department of Nephrology, Key Laboratory of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Ministry of Health and Guangdong Province, Guangzhou, P.R. China
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Zhdan VM, Tkachenko MV, Babanina M. MY, Volchenko GV, Kitura YM, Kyrian OA. GOUT NEPHROPATHY: CHOICE OF INITIAL THERAPY IN A COMORBID PATIENT. BULLETIN OF PROBLEMS BIOLOGY AND MEDICINE 2022. [DOI: 10.29254/2077-4214-2022-3-166-194-205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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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: 0] [Impact Index Per Article: 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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Jena M, Tripathy A, Mishra A, Maiti R. Effect of canakinumab on clinical and biochemical parameters in acute gouty arthritis: a meta-analysis. Inflammopharmacology 2020; 29:35-47. [PMID: 32918702 DOI: 10.1007/s10787-020-00753-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 08/28/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Targeted anti-IL-1β therapy may be a valuable option for the management of gouty arthritis. The present meta-analysis has evaluated the effect of canakinumab, an anti-IL-1β monoclonal antibody in gouty arthritis. METHODS A standard meta-analysis protocol was developed and after performing a comprehensive literature search in MEDLINE, Cochrane, and International Clinical Trial Registry Platform (ICTRP), reviewers assessed eligibility and extracted data from three relevant articles. A random-effects model was used to estimate the pooled effect size as the mean difference in Visual Analouge Scale (VAS) score, serum hsCRP, serum Amyloid A, and risk ratio for global assessment between the groups. Quality assessment was done using the risk of bias assessment tool and summary of findings was prepared using standard Cochrane methodology with GradePro GDT. RESULTS Treatment with canakinumab showed a mean reduction of VAS score by 14.59 mm [95% CI - 19.42 to - 9.77], serum hsCRP by 15.36 mg/L [95% CI 1.62-29.11], serum Amyloid A by 67.18 mg/L [95% CI 17.06-117.31], and improvement in patient global assessment (RR = 1.478; 95% CI 1.29-1.67) and physician global assessment (RR = 1.44; 95% CI 1.28-1.61). The probability that future studies may have a mean difference in VAS score less than zero has been calculated to be 27.3% using a cumulative distribution function (CDF) calculator. CONCLUSION This meta-analysis shows the beneficial effect of canakinumab over triamcinolone by reducing VAS score, serum hsCRP, serum amyloid A, and improvement in global assessments in acute gouty arthritis.
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Affiliation(s)
- Monalisa Jena
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Bhubaneswar, 751019, Odisha, India
| | - Amruta Tripathy
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Bhubaneswar, 751019, Odisha, India
| | - Archana Mishra
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), New Delhi, 110029, India
| | - Rituparna Maiti
- Department of Pharmacology, All India Institute of Medical Sciences (AIIMS), Bhubaneswar, 751019, Odisha, India.
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Jin HJ, Son ES, Kim DH. The Frequency of Axial Deposition in Korean Patients With Gout at a Tertiary Spine Center. Front Med (Lausanne) 2020; 7:339. [PMID: 32850877 PMCID: PMC7419467 DOI: 10.3389/fmed.2020.00339] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/08/2020] [Indexed: 12/27/2022] Open
Abstract
Objectives: This study aimed to describe the frequency of axial deposition (axial gout) and determine the associated factors in patients with gout who presented to a spine clinic in Korea. Methods: We enrolled 95 Korean patients who visited our spine center from March 2012 to February 2016 and who had been previously diagnosed with gout and had available computed tomography (CT) images of the vertebral columns. Axial gout was defined as the presence of erosions or tophi in the vertebral endplate or facet joint. The clinical and laboratory data of these patients were retrieved from medical records. Results: Out of 95 patients, 15 [15.8%; 95% confidence interval (CI), 9.4–25.0%] had a conventional CT evidence suggestive of axial gout. In these 15 patients, 12 (80%) had lumbar spine involvement (95% CI, 51.4–94.7%). Fifteen patients had erosions of the vertebral column, and two presented with tophi that exhibited erosive changes of the facet joints. The presence of axial gout was not associated with the patients' age, duration of gout, laboratory findings, inflammatory back pain symptoms, identification of monosodium urate crystals in the peripheral joints, current use of urate-lowering drugs, hypertension, and end-stage renal disease; however, there was a significant association with the presence of diabetes (P = 0.008). Conclusions: The frequency of axial deposition in Korean patients with gout and spinal symptoms was 15.8%, with the lumbar region being the most commonly involved section of the spine. In addition, diabetes was associated with evidence of axial gout on imaging.
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Affiliation(s)
- Hyo-Joon Jin
- Department of Rehabilitation Medicine, Dongsan Medical Center, School of Medicine, Keimyung University, Daegu, South Korea
| | - Eun-Seok Son
- Department of Orthopedic Surgery, Dongsan Medical Center, School of Medicine, Keimyung University, Daegu, South Korea
| | - Du Hwan Kim
- Department of Physical Medicine and Rehabilitation, College of Medicine, Chung-Ang University, Seoul, South Korea
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Eun Y, Han KD, Kim DH, Kim IY, Park EJ, Lee S, Cha HS, Koh EM, Lee J, Kim H. Association between anemia and hyperuricemia: results from the Korean National Health and Nutrition Examination Survey. Sci Rep 2019; 9:19067. [PMID: 31836793 PMCID: PMC6911023 DOI: 10.1038/s41598-019-55514-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/28/2019] [Indexed: 12/21/2022] Open
Abstract
Hyperuricemia and anemia share several comorbidities, but the association between the two conditions remains unclear. The purpose of this study was to investigate the association between hyperuricemia and anemia. Data of 10794 subjects from the Korean National Health and Nutrition Examination Survey conducted in 2016-2017 were analyzed using multivariate logistic regression analyses. An association between anemia and hyperuricemia was not evident in subjects without chronic kidney disease (CKD). In patients with CKD, anemia increased the risk of hyperuricemia by 2-fold. This association remained significant when adjusting for the glomerular filtration rate. In subgroup analyses, the association of anemia with hyperuricemia was significant in subjects aged ≥65 years, and in those with diabetes or hypertension. Subgroup analyses of CKD patients showed similar results. In the current study using data from Korean representative samples, anemia in subjects with CKD was associated with a 2-fold increase in the risk of hyperuricemia, which remained significant even after adjustment for renal function.
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Affiliation(s)
- Yeonghee Eun
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyung-Do Han
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Da Hye Kim
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - In Young Kim
- Department of Medicine, National Police Hospital, Seoul, Korea
| | - Eun-Jung Park
- Department of Medicine, National Medical Center, Seoul, Korea
| | - Seulkee Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hoon-Suk Cha
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eun-Mi Koh
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jaejoon Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Hyungjin Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Flores NM, Nuevo J, Klein AB, Baumgartner S, Morlock R. The economic burden of uncontrolled gout: how controlling gout reduces cost. J Med Econ 2019; 22:1-6. [PMID: 30289009 DOI: 10.1080/13696998.2018.1532904] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
AIM To evaluate the burden of uncontrolled gout by examining estimated costs and cost drivers. MATERIALS AND METHODS Data from the 2012 and 2013 US National Health and Wellness Survey (NHWS; 2012 NHWS, n = 71,157 and 2013 NHWS, n = 75,000) were utilized in this study. Based on self-reported gout diagnosis and gout symptoms, respondents were categorized into three groups: controlled gout (n = 344), uncontrolled gout (n = 2,215), and non-gout controls (n = 126,360). Chi-square tests and one-way analysis of variance (ANOVAs) were used to assess group differences on work productivity loss, healthcare resource utilization, and costs. Zero-inflated negative binomial regressions were used to assess the burden of uncontrolled gout on total costs after controlling for covariates. RESULTS Patients with uncontrolled gout had higher presenteeism, overall work impairment, activity impairment, and number of emergency department visits than those with controlled gout or controls. Overall, uncontrolled gout patients had both higher indirect and total costs compared to patients with controlled gout. After controlling for confounders, those with uncontrolled gout had higher total costs than controlled gout respondents and non-gout controls; there was no significant difference in total costs between patients with controlled gout and non-gout controls. LIMITATIONS Results were based on cross-sectional, self-reported data, making causal inferences more uncertain. Additionally, sample size was small for controlled-gout respondents. Lastly, sampling weights were not used, thus potentially limiting generalizability. CONCLUSION Gout can be an expensive condition, particularly if it is not properly controlled. This study provides support that controlling symptoms (e.g. flares) can reduce the economic and societal burden of gout. Therefore, more attention needs to be paid to effective management of gout symptoms.
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Affiliation(s)
- Natalia M Flores
- a Kantar Health, Health Outcomes Research , Foster City , CA , USA
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12
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Are Corticosteroids Superior to Nonsteroidal Anti-inflammatory Drugs in the Treatment of Acute Gout? Ann Emerg Med 2018; 72:204-205. [DOI: 10.1016/j.annemergmed.2018.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Indexed: 11/21/2022]
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13
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Billy CA, Lim RT, Ruospo M, Palmer SC, Strippoli GF. Corticosteroid or Nonsteroidal Antiinflammatory Drugs for the Treatment of Acute Gout: A Systematic Review of Randomized Controlled Trials. J Rheumatol 2017; 45:128-136. [DOI: 10.3899/jrheum.170137] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2017] [Indexed: 12/15/2022]
Abstract
Objective.Nonsteroidal antiinflammatory drugs (NSAID) are used as first-line agents to treat acute gout. Recent trials suggest a possible first-line role for corticosteroids.Methods.We conducted a metaanalysis of randomized controlled trials (RCT) evaluating corticosteroid versus NSAID therapy (nonselective and selective) as treatment for acute gout. MEDLINE, EMBASE, and CENTRAL were systematically searched through August 2016. Outcomes included pain, bleeding, joint swelling, erythema, tenderness, activity limitation, response to therapy, quality of life, time to resolution, supplementary analgesics, and adverse events. Evidence quality was summarized using the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) system.Results.Six eligible trials (817 patients) were identified. The mean study followup was 15 days (range 4–30). Risks of bias were generally low. In low- to moderate-quality evidence, corticosteroids did not have different effects on pain score at < 7 days [standardized mean difference (SMD) −0.09, 95% CI −0.26 to 0.08] or at ≥ 7 days (SMD 0.32, 95% CI −0.27 to 0.92) when compared with NSAID. There was no evidence of different risks of gastrointestinal bleeding [relative risk (RR) 0.09, 95% CI 0.01–1.67]. There was no evidence of different responses to therapy on pain at < 7 days (RR 1.07, 95% CI 0.80–1.44) and ≥ 7 days, time to disease resolution, or number of supplementary analgesics used (MD 2.10 drugs, 95% CI −1.01 to 5.21). There was a lower risk of indigestion (RR 0.50, 95% CI 0.27–0.92), nausea (RR 0.25, 95% CI 0.11–0.54), and vomiting (RR 0.11, 95% CI 0.02–0.56) with corticosteroid therapy.Conclusion.There is no evidence that corticosteroids and NSAID have different efficacy in managing pain in acute gout, but corticosteroids appear to have a more favorable safety profile for selected adverse events analyzed in existing RCT.
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Kim JW, Kwak SG, Lee H, Kim SK, Choe JY, Park SH. Prevalence and incidence of gout in Korea: data from the national health claims database 2007-2015. Rheumatol Int 2017; 37:1499-1506. [PMID: 28676911 DOI: 10.1007/s00296-017-3768-4] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/29/2017] [Indexed: 11/26/2022]
Abstract
The purpose of the present study was to investigate the prevalence and incidence of gout in Korea and predict the future prevalence and incidence of gout. Data were collected from the national health claims database. Patients who had at least one claim for gout between 2007 and 2015 were included in the study. The prevalence of gout from 2007 to 2015 and the incidence of gout from 2009 to 2015 were determined. We estimated sex- and age-specific prevalence and incidence of gout during the period. The prevalence and incidence of gout were predicted using time series analysis. The prevalence of gout (95% CI) increased from 3.49 (3.48-3.51) per 1000 persons in 2007 to 7.58 (7.55-7.60) per 1000 persons in 2015. The incidence of gout (95% CI) was 1.52 (1.51-1.53) in 2009 and rose to 1.94 (1.93-1.95) per 1000 persons in 2015. The prevalence and incidence of gout were higher in men than in women. The older population had a higher prevalence and incidence than the younger population. The increase in prevalence was higher in the older population than the younger population, whereas the increase in incidence was higher in the younger population than the older population. The predicted prevalence and incidence of gout (95% CI) in 2025 were 16.59 (15.85-17.34) per 1000 persons and 3.81 (3.14-4.47) per 1000 persons. The prevalence and incidence of gout increased in Korea between 2007 and 2015. Men and the older population had a higher prevalence and incidence of gout compared to women and the younger population. However, the incidence of gout in the younger population has increased rapidly in recent years.
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Affiliation(s)
- Ji-Won Kim
- Division of Rheumatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea
| | - Sang Gyu Kwak
- Department of Medical Statistics, Catholic University of Daegu School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea
| | - Hwajeong Lee
- Division of Rheumatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea
| | - Seong-Kyu Kim
- Division of Rheumatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea
| | - Jung-Yoon Choe
- Division of Rheumatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea
| | - Sung-Hoon Park
- Division of Rheumatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, 42472, Republic of Korea.
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Abstract
Gouty arthritis, one of the most painful and common forms of adult arthritis, is caused by monosodium urate crystal deposits in joints, most often in the lower extremities. Crystals trigger an inflammatory response leading to acute flares characterized by a rapid onset of pain, warmth, swelling, and redness in involved joints. Over time, continued monosodium urate crystal deposits and inflammation can lead to chronic tophaceous gout that result in bone erosion, progressing to joint destruction and significant disability. The goal of therapy in an acute gout flare is prompt and safe termination of pain and inflammation. Acute gouty arthritis is usually treated with nonsteroidal anti-inflammatory drugs, colchicine, or corticosteroids. However, for a growing number of patients, current standard treatments are ineffective or are contraindicated, largely due to the presence of comorbidities. Gouty arthritis can have a major negative impact of health-related quality of life, especially in patients with difficult-to-treat disease, as revealed by recent studies comparing health-related quality of life with that of the general population. Additionally, gouty arthritis also constitutes an important economic burden through absence from work and medical costs. This burden is even greater in patients with difficult-to-treat disease.
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Bando Y, Toyama H, Kanehara H, Hisada A, Okafuji K, Toya D, Tanaka N. Chronic hyperglycemia may attenuate the serum-uric-acid-lowering effect of low-dose febuxostat in Japanese patients with type 2 diabetes mellitus. Diabetol Int 2016; 7:308-313. [DOI: 10.1007/s13340-015-0251-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Accepted: 12/20/2015] [Indexed: 10/22/2022]
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17
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Immunopathogenesis and risk factors for allopurinol severe cutaneous adverse reactions. Curr Opin Allergy Clin Immunol 2016; 16:339-45. [DOI: 10.1097/aci.0000000000000286] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Musacchio E, Perissinotto E, Sartori L, Veronese N, Punzi L, Zambon S, Manzato E, Baggio G, Corti MC, Crepaldi G, Ramonda R. Hyperuricemia, Cardiovascular Profile, and Comorbidity in Older Men and Women: The Pro.V.A. Study. Rejuvenation Res 2016; 20:42-49. [PMID: 27241310 DOI: 10.1089/rej.2016.1834] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Hyperuricemia (HU) is growing worldwide and associates with several medical conditions in the elderly. However, data about older people and possible gender differences are sparse. The aim of this study was to compare HU prevalence rates and association with relevant medical disorders in elderly subjects of both sexes. Pro.V.A. is a survey of 3099 individuals aged 65+, focusing on chronic diseases and disability. Uric acid (UA) levels were dichotomized using 6.0 mg/dL (females) and 7.0 mg/dL (males), and multivariate logistic regression models were used to estimate odds ratios (ORs) between HU and single comorbidity. HU prevalence was 21.5% in females and 15.8% in males. HU was associated with most anthropometric and laboratory variables in women, but not in men. After adjustment for age, body mass index, and renal function, HU was independently associated with the presence of cardiovascular diseases in both sexes. In women, HU was associated with hand osteoarthritis (OR = 1.52; 95%CI: 1.12-2.08) and edentulism (OR = 1.31; 95%CI: 1.01-1.71), while resulted protective for osteoporosis (OR = 0.69; 95%CI: 0.53-0.91). In men, HU was significantly related with knee osteoarthritis (OR = 1.72; 95%CI: 1.06-2.79) and chronic obstructive pulmonary disease (OR = 1.60; 95%CI: 1.04-2.45). The presence of ≥4 comorbidities was a stronger determinant of HU in men (OR = 2.54; 95%CI: 1.21-5.37) than in women (ns). Patterns of age-dependent UA increase are markedly different in men and women. HU prevalence is substantial and its association with other diseases is gender specific, connoting a peculiar clinical profile.
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Affiliation(s)
- Estella Musacchio
- 1 Department of Medicine DIMED, Clinica Medica 1, University of Padova , Padova, Italy
| | - Egle Perissinotto
- 2 Department of Cardiologic, Thoracic and Vascular Sciences, Unit of Biostatistics, Epidemiology and Public Health, University of Padova , Padova, Italy
| | - Leonardo Sartori
- 1 Department of Medicine DIMED, Clinica Medica 1, University of Padova , Padova, Italy
| | - Nicola Veronese
- 3 Department of Medicine DIMED, Geriatric Unit, University of Padova , Padova, Italy
| | - Leonardo Punzi
- 4 Department of Medicine DIMED, Rheumatology Unit, University of Padova , Padova, Italy
| | - Sabina Zambon
- 1 Department of Medicine DIMED, Clinica Medica 1, University of Padova , Padova, Italy
| | - Enzo Manzato
- 3 Department of Medicine DIMED, Geriatric Unit, University of Padova , Padova, Italy .,5 National Research Council, Aging Branch, Institute of Neuroscience , Padova, Italy
| | - Giovannella Baggio
- 6 Department of Molecular Medicine DMM, University of Padova , Padova, Italy
| | | | - Gaetano Crepaldi
- 5 National Research Council, Aging Branch, Institute of Neuroscience , Padova, Italy
| | - Roberta Ramonda
- 4 Department of Medicine DIMED, Rheumatology Unit, University of Padova , Padova, Italy
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Nyberg F, Horne L, Morlock R, Nuevo J, Storgard C, Aiyer L, Hines DM, Ansolabehere X, Chevalier P. Comorbidity Burden in Trial-Aligned Patients with Established Gout in Germany, UK, US, and France: a Retrospective Analysis. Adv Ther 2016; 33:1180-98. [PMID: 27230988 PMCID: PMC4939171 DOI: 10.1007/s12325-016-0346-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Indexed: 12/22/2022]
Abstract
Introduction Patients with gout have numerous comorbidities. We aimed to estimate the prevalence and incidence rates of renal and cardiovascular morbidities in trial-aligned patients with established gout in Germany (DE), the United Kingdom (UK), the United States (US), and France (FR). Methods This longitudinal cohort study used retrospective data from IMS Disease Analyzer™ (DE, FR), Clinical Practice Research Datalink–Hospital Episode Statistics (UK), and IMS’ PharMetrics Plus database linked with outpatient laboratory results (US). Included patients were ≥18 years at index date (January 1, 2010; all dates +1 year for FR), with continuous enrollment during the pre-index year, had “prevalent established gout” determined by data in the pre-index year, and ≥1 documented visit after index date; additional inclusion/exclusion criteria were aligned with recent gout clinical trials. Look-back for comorbidity prevalence extended to January 1, 2003 (US: January 1, 2009). Follow-up for incidence extended from index date to at most March 26, 2013 (FR: May 31, 2014). Events of interest were identified by diagnostic codes and/or laboratory data. Results The trial-aligned cohorts included 35,118 (DE), 24,607 (UK), 121,591 (US), and 17,338 (FR) patients. Among renal conditions, baseline diagnosis of chronic kidney disease/renal failure was most prevalent in the UK followed by DE; abnormal serum creatinine was most prevalent in the UK. Hypertension was the most prevalent cardiovascular diagnosis in all countries, followed by ischemic heart disease (IHD) and myocardial infarction. Incidence rates (per 100 patient-years) for new/worsening renal impairment ranged from 1.67 (DE) to 4.34 (US) and for nephrolithiasis diagnosis from 0.31 (FR) to 3.79 (US). The incidence rates for hypertension diagnosis were highest among cardiovascular-related events, ranging from 3.23 (UK) to 20.27 (US), followed by IHD. Conclusions Patients with established gout such as those included in gout trials have a high burden of established morbidity and new diagnoses of morbid events. Consideration of comorbidities, which greatly exacerbate disease burden, is important in gout management. Funding AstraZeneca. Electronic supplementary material The online version of this article (doi:10.1007/s12325-016-0346-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fredrik Nyberg
- Medical Evidence and Observational Research, Global Medical Affairs, AstraZeneca, Mölndal, Sweden.
- Unit of Occupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Laura Horne
- Medical Evidence and Observational Research, Global Medical Affairs, AstraZeneca, Wilmington, DE, USA
| | | | - Javier Nuevo
- Medical Evidence and Observational Research, Global Medical Affairs, AstraZeneca, Madrid, Spain
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Hirsch JD, Gnanasakthy A, Lale R, Choi K, Sarkin AJ. Efficacy of Canakinumab vs. triamcinolone acetonide according to multiple gouty arthritis-related health outcomes measures. Int J Clin Pract 2014; 68:1503-7. [PMID: 25298264 DOI: 10.1111/ijcp.12521] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 07/11/2014] [Indexed: 12/13/2022] Open
Abstract
AIM Canakinumab (CAN), a selective, fully human, anti-IL-1β monoclonal antibody, has demonstrated long-term benefits in gouty arthritis (GA) patients, who have contraindications for, or are unresponsive or intolerant of, non-steroidal anti-inflammatory drugs (NSAIDs) or colchicine (two trials:β-RELIEVED [n = 228]; β-RELIEVED II [n = 226]). The trials collected different responses, including patient-reported outcomes (PRO). A composite response end-point (CRE) was used to interpret each patient's overall response to treatment. METHODS Data from β-RELIEVED trials were pooled for this retrospective analysis. The CRE representing overall change in GA-related health outcomes, from baseline to 12 weeks, included clinical markers; PROs from the Gout Impact Scale (GIS); and the SF-36 bodily pain scale. Response to each variable (i.e. markedly important difference) was determined a priori. Variable values [1 (responder) or 0 (non-responder)] were summed to create a CRE score for each patient. RESULTS For eight of 12 variables measured, the percentage of CAN responders was significantly greater than for TA (p < 0.05). On average, patients receiving CAN met a higher percentage of response criteria (65%) than patients receiving triamcinolone acetonide (TA) (49%), p < 0.001. Mean CRE scores were significantly higher for CAN vs. TA (mean [SD]; 4.7 [2.7] vs. 3.7 [2.4], p < 0.001). Treatment differences remained even after serially removing individual responder variables and domains from the composite end-point, indicating that the differences between CAN and TA were robust. CONCLUSION CAN was superior to TA across multiple health-outcome variables comprising clinical markers and PRO over 12 weeks in patients contraindicated, intolerant or unresponsive to NSAIDs and/or colchicine.
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Affiliation(s)
- J D Hirsch
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, USA; Veterans Affairs San Diego Healthcare System, San Diego, CA, USA
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Franchi C, Salerno F, Conca A, Djade CD, Tettamanti M, Pasina L, Corrao S, Marengoni A, Marcucci M, Mannucci PM, Nobili A. Gout, allopurinol intake and clinical outcomes in the hospitalized multimorbid elderly. Eur J Intern Med 2014; 25:847-52. [PMID: 25439099 DOI: 10.1016/j.ejim.2014.09.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/25/2014] [Accepted: 09/30/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Increased serum uric acid has been considered a cardiovascular risk factor but no study has assessed its relation with hospital mortality or length of stay. On the basis of data obtained from a prospective registry, the prevalence of gout/hyperuricemia and its association with these and other clinical parameters was evaluated in an Italian cohort of elderly patients acutely admitted to internal medicine or geriatric wards. METHODS While the prevalence of gout was calculated by counting patients with this diagnosis hyperuricemia was inferred in patients taking allopurinol at hospital admission or discharge, on the assumption that this drug was only prescribed owing to the finding of high serum levels of uric acid. A series of clinical and demographic variables were evaluated for their association with gout/hyperuricemia. RESULTS Of 1380 patients, 139 (10%) had a diagnosis of gout or were prescribed allopurinol. They had more co-morbidities (7.0 vs 5.6; P<0.0001) and consumed more drugs (6.8 vs 5.0; P<0.0001). The CIRS (co-morbidity index) was worse in these patients (OR 1.28 95% CI 1.15-1.41). Multivariable regression analysis showed that only renal and heart failures were independently associated with gout/allopurinol intake. Moreover, this combined event was associated with an increased risk of adverse events during hospitalization (OR 1.66, 95% CI 1.16-2.36), but not with the risk of re-hospitalization, length of hospital stay or death. CONCLUSIONS Gout/allopurinol intake has a high prevalence in elderly patients acutely admitted to hospital and are associated with renal and cardiovascular diseases, an increased rate of adverse events and a high degree of drug consumption. In contrast, this finding did not affect the length of hospitalization nor hospital mortality.
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Affiliation(s)
- Carlotta Franchi
- Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy.
| | - Francesco Salerno
- Internal Medicine I, Policlinico IRCCS San Donato, University of Milan, Italy
| | - Alessio Conca
- Internal Medicine I, Policlinico IRCCS San Donato, University of Milan, Italy
| | - Codjo D Djade
- Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy
| | - Mauro Tettamanti
- Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy
| | - Luca Pasina
- Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy
| | - Salvatore Corrao
- Dipartimento Biomedico di Medicina Interna e Specialistica, University of Palermo, Italy
| | | | - Maura Marcucci
- Department of Internal Medicine, IRCCS Ca' Granda Maggiore Policlinico Hospital Foundation, Milano, Italy
| | | | - Alessandro Nobili
- Department of Neuroscience, IRCCS - Istituto di Ricerche Farmacologiche "Mario Negri", Milan, Italy
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Tu FY, Lin GT, Lee SS, Tung YC, Tu HP, Chiang HC. Prevalence of gout with comorbidity aggregations in southern Taiwan. Joint Bone Spine 2014; 82:45-51. [PMID: 25238950 DOI: 10.1016/j.jbspin.2014.07.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Accepted: 07/01/2014] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Comorbidity is an important concern for chronic gout patients. We evaluated the relationship between comorbidity profiles and gout in Taiwan aborigines and Taiwanese Han. METHODS We used the claims data from the Taiwan national health insurance database for 2004 to 2006. Physician-diagnosed gout and comorbidities were coded using the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM). Total sampling from Pingtung County of southern Taiwan included 37,482 aborigines (gout cases, n=3906 and controls, n=33,576) and 37,451 Han (gout cases, n=1115 and controls, n=36,336). RESULTS In 2006, the gout prevalences were 10.42% and 2.98% (prevalence ratio [PR]=3.50) in the aborigines and Han general populations, respectively. The prevalences of uric acid nephrolithiasis and tophi were higher in aborigines (0.42% and 0.30%, respectively) than in Han (0.09% and 0.04%, respectively). When stratified by comorbidity status, the prevalences of gout were 4.49% and 27.34% in aborigines and 1.52% and 9.44% in Han (approximate PR=3.00). Similarly, the prevalence ratios of gout in the comorbidity group, compared with the non-comorbidity group, were 6.09 in aborigines and 6.23 in Han. Multivariate odds ratios [ORs] showed that hypercholesterolemia, hyperglyceridemia, essential hypertension and renal insufficiency were the common comorbidities of gout (OR≥1.63); heart failure exerted a significant effect only in aborigines (OR=1.55). For five comorbidity factors, patients with multiple comorbidities had higher gout prevalence (maximum OR=12.90). CONCLUSION Gout prevalence was higher in aborigines, both with and without comorbidities, than in Han. The comorbid diseases and comorbidity aggregations showed a substantial association with gout occurrence in both ethnicities.
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Affiliation(s)
- Fang-Yi Tu
- Public Health Bureau, Pingtung County Government, Pingtung, Taiwan
| | - Gau-Tyan Lin
- Department of Orthopedic Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Kaohsiung Municipal United Hospital, Kaohsiung, Taiwan; Graduate Institute of Medicine, College of Medicine, Kaohsiung, Taiwan
| | - Su-Shin Lee
- Division of Plastic Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Surgery, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Ching Tung
- Department of Public Health and Environmental Medicine, School of Medicine, College of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung, Taiwan
| | - Hung-Ping Tu
- Department of Public Health and Environmental Medicine, School of Medicine, College of Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung, Taiwan.
| | - Hung-Che Chiang
- Division of Environmental Health and Occupational Medicine, National Health Research Institutes, Miaoli, Taiwan; Department of Occupational Medicine, Taipei Medical University-Shuang Ho Hospital, Taipei, Taiwan
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Namane MK, Kalla AA, Young TN. Consultation outcomes for musculoskeletal conditions at two community health centres in Cape Town. S Afr Fam Pract (2004) 2014. [DOI: 10.1080/20786204.2013.10874380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- MK Namane
- Metro District Health Services, Western Cape Department of Health, Community Health Division and Family Medicine Division, Faculty of Health Sciences, Stellenbosch and Family Medicine Division, Faculty of Health Sciences, University of Cape Town, Cape Town
| | - AA Kalla
- Head of Unit, Rheumatic Diseases Unit, Faculty of Health Sciences, University of Cape Town, Cape Town
| | - TN Young
- Centre for Evidence-Based Medicine, Community Health Division Faculty of Health Sciences, Stellenbosch University, Stellenbosch
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Becker MA, MacDonald PA, Hunt BJ, Jackson RL. Diabetes and gout: efficacy and safety of febuxostat and allopurinol. Diabetes Obes Metab 2013; 15:1049-55. [PMID: 23683134 PMCID: PMC3902994 DOI: 10.1111/dom.12135] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/22/2013] [Accepted: 05/14/2013] [Indexed: 12/22/2022]
Abstract
AIM Assess influences of demographics and co-morbidities of gout patients with or without diabetes on safety and efficacy of urate-lowering agents. METHODS Post-hoc analysis of 312 diabetic and 1957 non-diabetic gout patients [baseline serum urate levels (sUA) ≥8.0 mg/dl] enrolled in a 6-month randomized controlled trial comparing urate-lowering efficacy (ULE) and safety of daily xanthine oxidase inhibitors (XOIs) febuxostat (40 mg or 80 mg) and allopurinol (200 mg or 300 mg). We compared baseline demographic, gout and co-morbid characteristics, ULE, and safety of XOI treatment in diabetic and non-diabetic gout patients. ULE was measured by the proportion of diabetic and non-diabetic patients in each treatment group achieving final visit sUA < 6.0 mg/dl. Safety was monitored throughout the trial. RESULTS Diabetic gout patients were older, more frequently female, and had longer gout duration. Co-morbidities were more frequent among diabetic patients: cardiovascular disease; impaired renal function; hyperlipidemia; and obesity (body mass index >30 kg/m²) (p < 0.001 for all comparisons). Febuxostat 80 mg ULE exceeded that of febuxostat 40 mg or allopurinol (p < 0.050) at all levels of renal function, achieving sUA goal range in the majority of diabetic and non-diabetic patients. Diabetics and non-diabetics reported self-limiting diarrhoea and URIs as the most common adverse events. CONCLUSIONS Despite higher co-morbidity rates in diabetic patients, febuxostat and allopurinol were safe in both groups at the doses tested. Febuxostat 80 mg achieved sUA <6.0 mg/dl more often than febuxostat 40 mg or allopurinol at commonly prescribed doses.
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Affiliation(s)
- M A Becker
- Pritzker School of Medicine, The University of ChicagoChicago, IL, USA
- Correspondence to: Prof. Michael A. Becker, MD, Emeritus of Medicine, The University of Chicago, 237 East Delaware Place, Chicago, IL 60611–1713, USA. E-mail:
| | - P A MacDonald
- Takeda Global Research & Development Center, Inc.Deerfield, IL, USA
| | - B J Hunt
- Takeda Global Research & Development Center, Inc.Deerfield, IL, USA
| | - R L Jackson
- Takeda Global Research & Development Center, Inc.Deerfield, IL, USA
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Ramasamy SN, Korb-Wells CS, Kannangara DRW, Smith MWH, Wang N, Roberts DM, Graham GG, Williams KM, Day RO. Allopurinol Hypersensitivity: A Systematic Review of All Published Cases, 1950–2012. Drug Saf 2013; 36:953-80. [DOI: 10.1007/s40264-013-0084-0] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Stocker SL, McLachlan AJ, Savic RM, Kirkpatrick CM, Graham GG, Williams KM, Day RO. The pharmacokinetics of oxypurinol in people with gout. Br J Clin Pharmacol 2013; 74:477-89. [PMID: 22300439 DOI: 10.1111/j.1365-2125.2012.04207.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
AIMS Our aim was to identify and quantify the sources of variability in oxypurinol pharmacokinetics and explore relationships with plasma urate concentrations. METHODS Non-linear mixed effects modelling was applied to concentration-time data from 155 gouty patients with demographic, medical history and renal transporter genotype information. RESULTS A one compartment pharmacokinetic model with first order absorption best described the oxypurinol concentration-time data. Renal function and concomitant medicines (diuretics and probenecid), but not transporter genotype, significantly influenced oxypurinol pharmacokinetics and reduced the between subject variability in the apparent clearance of oxypurinol (CL/F(m)) from 65% to 29%. CL/F(m) for patients with normal, mild, moderate and severe renal impairment was 1.8, 0.6, 0.3 and 0.18 l h(-1), respectively. Model predictions showed a relationship between plasma oxypurinol and urate concentrations and failure to reach target oxypurinol concentrations using suggested allopurinol dosing guidelines. CONCLUSIONS In conclusion, this first established pharmacokinetic model provides a tool to achieve target oxypurinol plasma concentrations, thereby optimizing the effectiveness and safety of allopurinol therapy in gouty patients with various degrees of renal impairment.
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Robinson PC, Merriman TR, Herbison P, Highton J. Hospital admissions associated with gout and their comorbidities in New Zealand and England 1999-2009. Rheumatology (Oxford) 2012; 52:118-26. [PMID: 22989425 DOI: 10.1093/rheumatology/kes253] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES To describe the national demographics, comorbidities and mortality of admissions associated with gout in New Zealand (NZ) from 1999 to 2009 and compare this with English gout admission data from the same period. METHODS The characteristics of all admissions due to or complicated by gout in NZ from 1999 to 2009 were analysed. These findings were then compared with the wider NZ population and the English National Health Service (NHS) gout admission rates from 1999 to 2009. RESULTS There were 10 241 admissions due to gout (group A) and 34 318 admissions complicated by gout (group B) in NZ from 1999 to 2009. There were 32 741 admissions due to gout in England over the same period. Gout admissions rose at 5.5% per year in NZ and at 7.2% per year in England over the study period. NZ gout patients admitted to hospital were more likely to be Māori or a Pacific Islander and had 3-7 comorbidities. Multiple admissions were common with 1479 NZ gout patients admitted more than once. Comorbidities varied between the NZ groups A and B: hypertension (19-39%), renal disease (16-27%) and diabetes mellitus (20-27%) were common. Heart failure (27.6%) and cardiovascular disease (39.1%) were common in those who had gout complicating their hospital admission. This group also had poorer survival compared with those admitted primarily for gout. CONCLUSION This is the first study to describe the epidemiology of admissions associated with gout across an entire country. Admissions are rising in both countries studied and those admitted in NZ have a high rate of comorbidity and re-admission.
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Affiliation(s)
- Philip C Robinson
- University of Queensland Diamantina Institute, Princess Alexandra Hospital, Ipswich Road, Woolloogabba, Queensland 4102, Australia.
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Keenan RT. Safety of urate-lowering therapies: managing the risks to gain the benefits. Rheum Dis Clin North Am 2012; 38:663-80. [PMID: 23137576 DOI: 10.1016/j.rdc.2012.08.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Gout is a metabolic disorder of purine metabolism and uric acid elimination. Over time, acute gout can develop into a chronic, disabling arthropathy, often associated with multiple comorbidities. Gout patients have often been undertreated, partly because of the clinician's perceived risks of a therapy outweighing its potential benefits. The approval of new therapies to treat hyperuricemia in gout has led to a new understanding of gout management and medication safety regarding new and old therapies. This review focuses on potential safety issues of currently available urate-lowering therapies and outlines strategies to minimize risks so their benefits can be reached.
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Affiliation(s)
- Robert T Keenan
- Duke Gout and Crystal Arthropathies Clinic, Duke Specialty Infusion Center, Durham, NC 27710, USA.
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Zhu Y, Pandya BJ, Choi HK. Comorbidities of gout and hyperuricemia in the US general population: NHANES 2007-2008. Am J Med 2012; 125:679-687.e1. [PMID: 22626509 DOI: 10.1016/j.amjmed.2011.09.033] [Citation(s) in RCA: 432] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 09/29/2011] [Accepted: 09/30/2011] [Indexed: 12/22/2022]
Abstract
PURPOSE The objective of this study was to estimate the latest prevalence of major comorbidities associated with gout and hyperuricemia in the US based on a recent, nationally representative sample of US men and women. METHODS Using data from 5707 participants aged 20 years and older in the National Health and Nutrition Examination Survey 2007-2008, we calculated the national prevalence and population estimates of major comorbidities according to gout status and various hyperuricemia levels, compared with those without these conditions. Case definitions of gout and comorbidities were based on an affirmative answer to a question that asked whether a physician or a health professional had diagnosed the corresponding condition. RESULTS Among these individuals with gout, 74% (6.1 million) had hypertension, 71% (5.5 million) had chronic kidney disease stage ≥2, 53% (4.3 million) were obese, 26% (2.1 million) had diabetes, 24% (2.0 million) had nephrolithiasis, 14% (1.2 million) had myocardial infarction, 11% (0.9 million) had heart failure, and 10% (0.9 million) had suffered a stroke. These proportions were substantially higher than those among individuals without gout (all P-values <.67). With increasing levels of hyperuricemia, there were graded increases in the prevalences of these comorbidities. In the top category (serum urate ≥10 mg/dL), 86% of subjects had chronic kidney disease stage ≥2, 66% had hypertension, 65% were obese, 33% had heart failure, 33% had diabetes, 23% had myocardial infarction, and 12% had stroke. These prevalences were 3-33 times higher than those in the lowest serum urate category (<4 mg/dL). Sex-specific odds ratios tended to be larger among women than men, and the overall comorbidity prevalence was highest among individuals with both gout and hyperuricemia. CONCLUSIONS These findings from the latest nationally representative data highlight remarkable prevalences and population estimates of comorbidities of gout and hyperuricemia in the US. Appropriate preventive and management measures of these comorbidities should be implemented in gout management, with a preference to strategies that can improve gout and comorbidities together.
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Affiliation(s)
- Yanyan Zhu
- Clinical Epidemiology Unit, Boston University School of Medicine, MA, USA
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Öztürk MA, Kaya A, Şenel S, Dönmez S, Balkarlı A, Çobankara V, Erhan Ç, Sayarlıoğlu M, Ugan Y, Tunç ŞE, Pehlivan Y, Kısacık B, Tufan A, Onat AM, Tezcan E, Yıldırım Çetin G, Pamuk ON. Demographic and clinical features of gout patients in Turkey: a multicenter study. Rheumatol Int 2012; 33:847-52. [PMID: 22588430 DOI: 10.1007/s00296-012-2442-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2011] [Accepted: 04/24/2012] [Indexed: 12/22/2022]
Abstract
Gout results from multifactor interactions between gender, age, genetic and environmental factors. Environmental factors underlying gout and precipitating factors triggering acute attacks might vary in different populations with different lifestyles. In this study, we aimed to collect data regarding the demographic and clinical features, comorbid factors, and precipitating factors associated with the initiation of acute attacks in gout patients in Turkey. A total of 312 patients were included in this study (mean age, 58.8 ± 13.8 years; female/male ratio, 55/257). The demographic features, alcohol intake, clinical and laboratory features, and comorbid conditions including obesity, diabetes mellitus, hyperlipidemia, hypertension, and coronary heart disease were noted in a standard questionnaire. Precipitating factors initiating acute attacks (if any) were also noted. The patients were divided into 4 groups according to the region of location as central Anatolian region, southeast Anatolian region, Aegean region, and Trakya region. Our results were compared according to the gender and the location of the patients. The mean age at the start of the symptoms was 10 years higher in women (60.4 ± 14.8 and 50.6 ± 13.5 years in women and men, respectively, p < 0.001).Obesity was present in 40.1 %, diabetes mellitus in 17.9 %, hyperlipidemia in 30.1 %, hypertension in 53.5 %, coronary artery disease in 17 %, and nephrolithiasis in 21.8 % of patients. Precipitating factors triggering gout flares were as follows: diet (high consumption of meat or fish) in 46.5 %, alcohol consumption in 15.7 %, diuretics in 8.3 %, diet or diuretics in 5.1 %, diet or alcohol in 4.5 %, diet or alcohol or diuretics in 1.6 %, others in 4.2 %, and none in 14.1 %. The presence of diabetes and diuretic use was more common among women. Use of diuretics is a more common trigger for gout flares among women. On the other hand, various comorbid conditions, such as obesity and hypertension, and triggers for gout flares may differ between patients living in different geographic regions. In summary, we reported the first data regarding clinical and demographic characteristics of gout in Turkey. The majority of our patients could describe at least one "trigger" that initiated gout flare. Both comorbid conditions and triggers of attack might differ between men and women, and in different geographic areas. Better knowledge of the modifiable risk factors can be useful for the management strategy to optimize long-term patient outcomes in local clinics.
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Affiliation(s)
- Mehmet Akif Öztürk
- Division of Rheumatology, Department of Internal Medicine, Faculty of Medicine, Gazi University, Beşevler, Ankara, Turkey.
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Gonzalez EB. An update on the pathology and clinical management of gouty arthritis. Clin Rheumatol 2011; 31:13-21. [PMID: 22069122 PMCID: PMC3249158 DOI: 10.1007/s10067-011-1877-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 09/28/2011] [Accepted: 10/12/2011] [Indexed: 11/26/2022]
Abstract
Gouty arthritis is an inflammatory condition associated with debilitating clinical symptoms, functional impairments, and a substantial impact on quality of life. This condition is initially triggered by the deposition of monosodium urate crystals into the joint space. This causes an inflammatory cascade resulting in the secretion of several proinflammatory cytokines and neutrophil recruitment into the joint. While generally effective, currently available agents are associated with a number of adverse events and contraindications that complicate their use. Based on our increased understanding of the inflammatory pathogenesis of gouty arthritis, several new agents are under development that may provide increased efficacy and reduced toxicity.
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Affiliation(s)
- Emilio B Gonzalez
- Division of Rheumatology, Department of Medicine, The University of Texas Medical Branch (UTMB), 301 University Blvd, Route 0565, Galveston, TX 77555-0565, USA.
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Smith EUR, Díaz-Torné C, Perez-Ruiz F, March LM. Epidemiology of gout: an update. Best Pract Res Clin Rheumatol 2011; 24:811-27. [PMID: 21665128 DOI: 10.1016/j.berh.2010.10.004] [Citation(s) in RCA: 135] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Gout is the most common inflammatory joint disease in men, characterised by formation of monosodium urate (MSU) crystals in the synovial fluid of joints and in other tissues. The epidemiology of gout provides us with the understanding of the disease distribution and its determinants. In an attempt to update the knowledge on the topic, more recent research reports on the descriptive epidemiology of gout are reviewed in this article. The review describes clinical characteristics and case definitions of gout, including the Rome and New York diagnosis criteria of gout, '1977 American Rheumatism Association (ARA) criteria' and the 10 key propositions of the European League Against Rheumatism (EULAR) recommendations. Gout incidence, prevalence, morbidity and mortality, geographical variation of the disease, relevant risk factors for both the occurrence and outcome of gout and trends of the disease over time are then described. Difficulties in obtaining the information and data reported are also discussed.
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Affiliation(s)
- E U R Smith
- Department of Rheumatology, Northern Clinical School, University of Sydney, Building 35, Block 4, Level 4, Royal North Shore Hospital, St Leonards, NSW 2065, Australia.
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Schlesinger N, De Meulemeester M, Pikhlak A, Yücel AE, Richard D, Murphy V, Arulmani U, Sallstig P, So A. Canakinumab relieves symptoms of acute flares and improves health-related quality of life in patients with difficult-to-treat Gouty Arthritis by suppressing inflammation: results of a randomized, dose-ranging study. Arthritis Res Ther 2011; 13:R53. [PMID: 21439048 PMCID: PMC3132043 DOI: 10.1186/ar3297] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Revised: 02/11/2011] [Accepted: 03/25/2011] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION We report the impact of canakinumab, a fully human anti-interleukin-1β monoclonal antibody, on inflammation and health-related quality of life (HRQoL) in patients with difficult-to-treat Gouty Arthritis. METHODS In this eight-week, single-blind, double-dummy, dose-ranging study, patients with acute Gouty Arthritis flares who were unresponsive or intolerant to--or had contraindications for--non-steroidal anti-inflammatory drugs and/or colchicine were randomized to receive a single subcutaneous dose of canakinumab (10, 25, 50, 90, or 150 mg) (N = 143) or an intramuscular dose of triamcinolone acetonide 40 mg (N = 57). Patients assessed pain using a Likert scale, physicians assessed clinical signs of joint inflammation, and HRQoL was measured using the 36-item Short-Form Health Survey (SF-36) (acute version). RESULTS At baseline, 98% of patients were suffering from moderate-to-extreme pain. The percentage of patients with no or mild pain was numerically greater in most canakinumab groups compared with triamcinolone acetonide from 24 to 72 hours post-dose; the difference was statistically significant for canakinumab 150 mg at these time points (P < 0.05). Treatment with canakinumab 150 mg was associated with statistically significant lower Likert scores for tenderness (odds ratio (OR), 3.2; 95% confidence interval (CI), 1.27 to 7.89; P = 0.014) and swelling (OR, 2.7; 95% CI, 1.09 to 6.50, P = 0.032) at 72 hours compared with triamcinolone acetonide. Median C-reactive protein and serum amyloid A levels were normalized by seven days post-dose in most canakinumab groups, but remained elevated in the triamcinolone acetonide group. Improvements in physical health were observed at seven days post-dose in all treatment groups; increases in scores were highest for canakinumab 150 mg. In this group, the mean SF-36 physical component summary score increased by 12.0 points from baseline to 48.3 at seven days post-dose. SF-36 scores for physical functioning and bodily pain for the canakinumab 150 mg group approached those for the US general population by seven days post-dose and reached norm values by eight weeks post-dose. CONCLUSIONS Canakinumab 150 mg provided significantly greater and more rapid reduction in pain and signs and symptoms of inflammation compared with triamcinolone acetonide 40 mg. Improvements in HRQoL were seen in both treatment groups with a faster onset with canakinumab 150 mg compared with triamcinolone acetonide 40 mg. TRIAL REGISTRATION clinicaltrials.gov: NCT00798369.
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Affiliation(s)
- Naomi Schlesinger
- Division of Rheumatology, Department of Medicine, Robert Wood Johnson Medical School, 125 Patterson Street, New Brunswick, NJ 089010, USA
| | - Marc De Meulemeester
- Pratique Médicale, Cabinet de Là-Haut, Rue de Marchienne 113, 6534 Gozée, Belgium
| | - Andrey Pikhlak
- Moscow State University of Medicine and Dentistry, Clinical-Diagnostic Center MSMSU, Dolgorukovskaya Street 4, Moscow 127006, Russia
| | - A Eftal Yücel
- Baskent University, Faculty of Medicine, Baglica Kampusu, Eskisehir Yolu 20.km, Baglica 06530, Ankara, Turkey
| | - Dominik Richard
- Immunology & Infectious Disease Therapeutic Area, Novartis Pharma AG, Lichtstrasse 35, CH-4056, Basel, Switzerland
| | - Valda Murphy
- Immunology & Infectious Disease Therapeutic Area, Novartis Pharma AG, Lichtstrasse 35, CH-4056, Basel, Switzerland
| | - Udayasankar Arulmani
- Immunology & Infectious Disease Therapeutic Area, Novartis Pharma AG, Lichtstrasse 35, CH-4056, Basel, Switzerland
| | - Peter Sallstig
- Immunology & Infectious Disease Therapeutic Area, Novartis Pharma AG, Lichtstrasse 35, CH-4056, Basel, Switzerland
| | - Alexander So
- Service de Rhumatologie, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Av. Pierre-Decker 5, CH-1005, Lausanne, Switzerland
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Grabowski B, Khosravan R, Wu JT, Vernillet L, Lademacher C. Effect of hydrochlorothiazide on the pharmacokinetics and pharmacodynamics of febuxostat, a non-purine selective inhibitor of xanthine oxidase. Br J Clin Pharmacol 2011; 70:57-64. [PMID: 20642548 DOI: 10.1111/j.1365-2125.2010.03667.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT Hyperuricaemia and gout frequently coexist with cardiovascular disorders such as hypertension and heart failure. The use of diuretics has been re-established as a first-line treatment for patients with hypertension and the effects of diuretics on serum uric acid may diminish the urate-lowering effects of febuxostat, a novel, potent, non-purine selective inhibitor of xanthine oxidase. WHAT THIS STUDY ADDS Co-administration of febuxostat 80 mg and hydrochlorothiazide 50 mg had no effect on the pharmacokinetics and did not have a clinically significant effect on the pharmacodynamics of febuxostat. Dose adjustment for febuxostat is not necessary when it is administered with hydrochlorothiazide. AIM This study examined the effect of co-administration of febuxostat, an investigational urate lowering therapy, and hydrochlorothiazide on the pharmacokinetics and pharmacodynamics of febuxostat. METHODS Healthy subjects (36 healthy men and women) received single doses of febuxostat 80 mg alone and febuxostat 80 mg + hydrochlorothiazide 50 mg, separated by 7 days in an open-label, randomized, crossover fashion. Plasma concentrations of febuxostat and urinary and serum concentrations of uric acid were assessed. RESULTS Mean febuxostat C(max), AUC((0-t)), AUC((0-infinity)), t(1/2,z), CL/F and V(ss)/F values for regimens co-administration/febuxostat alone were 2.9/2.9 microg ml(-1), 9.3/9.1 microg ml(-1) h, 9.6/9.3 microg ml(-1) h, 6.5/6.1 h, 8.8/9.3 l h(-1) and 45/44 l, respectively. Geometric mean ratios (co-administration : febuxostat alone) and their 90% confidence intervals for febuxostat plasma C(max), AUC((0-t)), and AUC((0-infinity)) were 1.00 (0.86, 1.17), 1.03 (0.98, 1.09), and 1.04 (0.98, 1.10), respectively; all of the 90% CIs were within the no effect range of 0.8 to 1.25. Serum uric acid C(mean,24h), C(mean,48h) and CL(R) for both regimens co-administration/febuxostat alone were 216/203 micromol l(-1), 218/202 micromol l(-1) and 9.1/10.1 ml min(-1), respectively. Although serum uric acid C(mean,24h) and C(mean,48h) values were higher and CL(R) values lower after co-administration compared with dosing of febuxostat alone, with the differences being statistically significant (P < 0.003), none of the differences (6.5%-9.5%) was considered clinically significant. CONCLUSION Dose adjustment for febuxostat is not necessary when it is administered with hydrochlorothiazide.
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Affiliation(s)
- Brian Grabowski
- Takeda Global Research & Development Center, Inc., One Takeda Parkway, Deerfield, IL 60015, USA.
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Keenan RT, O'Brien WR, Lee KH, Crittenden DB, Fisher MC, Goldfarb DS, Krasnokutsky S, Oh C, Pillinger MH. Prevalence of contraindications and prescription of pharmacologic therapies for gout. Am J Med 2011; 124:155-63. [PMID: 21295195 DOI: 10.1016/j.amjmed.2010.09.012] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 07/28/2010] [Accepted: 09/12/2010] [Indexed: 11/17/2022]
Abstract
BACKGROUND Patients with gout have comorbidities, but the impact of these comorbidities on treatment has not been studied. METHODS A total of 575 patients with gout were stratified according to certainty of diagnosis according to International Classification of Diseases, 9th Revision, Clinical Modification code alone (cohort I), American College of Radiology criteria (cohort II), and crystal diagnosis (cohort III). Comorbid conditions were defined according to International Classification of Diseases, 9th Revision, Clinical Modification codes, and stratified as either moderate or severe. Drug contraindications were defined as moderate or strong, based on Food and Drug Administration criteria and severity of disease. RESULTS The most common comorbidity was hypertension (prevalence 0.89). The presence of comorbidities resulted in a high frequency of contraindications to approved gout medications. More than 90% of patients had at least 1 contraindication to nonsteroidal anti-inflammatory drugs. Many patients demonstrated multiple contraindications to 1 or more gout medications. Frequently, patients were prescribed medications to which they harbored contraindications. The prevalence of patients prescribed colchicine despite having at least 1 strong contraindication was 30% (cohort I), 37% (cohort II), and 39.6% (cohort III). CONCLUSION Patients with gout typically harbor multiple comorbidities that result in contraindications to many of the medications available to treat gout. Frequently, despite contraindications to gout therapies, patients are frequently prescribed these medications.
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Affiliation(s)
- Robert T Keenan
- Section of Rheumatology of the New York Harbor Health Care System, New York Campus of the US Department of Veterans Affairs, New York, USA.
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Dubchak N, Falasca GF. New and improved strategies for the treatment of gout. Int J Nephrol Renovasc Dis 2010; 3:145-66. [PMID: 21694941 PMCID: PMC3108771 DOI: 10.2147/ijnrd.s6048] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Indexed: 12/16/2022] Open
Abstract
The Western world appears to be in the midst of the third great gout epidemic of all time. In this century, gout is increasing in prevalence despite an increased understanding of its risk factors and pathophysiology, and the availability of reasonably effective treatment. The main cultural factors responsible for this appear to be diet, obesity, ethanol use and medications. Excess fructose consumption is a newly recognized modifiable risk factor. The debate has been renewed concerning hyperuricemia as an independent risk factor for renal insufficiency and cardiovascular disease. Prevention is still rooted in lifestyle choices. Existing treatments have proven to be unsatisfactory in many patients with comorbidities. New treatments are available today and on the horizon for tomorrow, which offer a better quality of life for gout sufferers. These include febuxostat, a nonpurine inhibitor of xanthine oxidase with a potentially better combination of efficacy and safety than allopurinol, and investigational inhibitors of URAT-1, an anion exchanger in the proximal tubule that is critical for uric acid homeostasis. New abortive treatments include interleukin-1 antagonists that can cut short the acute attack in 1 to 2 days in persons who cannot take nonsteroidal anti-inflammatory drugs, colchicine or corticosteroids. Lastly, newer formulations of uricase have the ability to dissolve destructive tophi over weeks or months in patients who cannot use currently available hypouricemic agents. Diagnostically, ultrasound and magnetic resonance imaging offer advanced ways to diagnose gout noninvasively, and just as importantly, a way to follow the progress of tophus dissolution. The close association of hyperuricemia with metabolic syndrome, hypertension and renal insufficiency ensures that nephrologists will see increasing numbers of gout-afflicted patients.
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Affiliation(s)
- Natalie Dubchak
- Division of Rheumatology, Cooper University Hospital, UMDNJ – Robert Wood Johnson Medical School at Camden, Camden, NJ, USA
| | - Gerald F Falasca
- Division of Rheumatology, Cooper University Hospital, UMDNJ – Robert Wood Johnson Medical School at Camden, Camden, NJ, USA
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Krishnan E. Inflammation, oxidative stress and lipids: the risk triad for atherosclerosis in gout. Rheumatology (Oxford) 2010; 49:1229-38. [PMID: 20202928 DOI: 10.1093/rheumatology/keq037] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
For many years, the relationship between cardiovascular disease risk and gout, though strong and consistent, was suspected of being coincidental rather than causative. In recent years, compelling epidemiological and clinical data have increasingly favoured an aetiological connection. However, that connection is notably complex, involving a multifaceted model that includes interactions between inflammatory processes, oxidative stress and potential genetic influences, as well as cardiovascular and renal components that remain only partly explained. Urate appears to be able to activate the immune response, and in that context has a mediating role in the inflammatory process via the inflammasome. This interaction of urate and inflammation is central to the inflammatory cascade associated with gout flares. In the arena of oxidative stress, urate has both antioxidant and pro-oxidant properties, and while potentially beneficial in scavenging free radicals, it can also impair endothelial function and thereby give rise to atherosclerotic risk. Human and animal studies have revealed associations between hyperuricaemia and a host of atherosclerotic risk factors, whereas a reduction in urate levels is frequently associated with improvement or even resolution of such risk factors. The degree to which reduction of serum urate can reliably improve cardiovascular risk remains uncertain. It is hoped that the introduction of newer urate-lowering agents may help to clarify this picture and improve treatment options for both gout and atherosclerosis.
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Affiliation(s)
- Eswar Krishnan
- Division of Immunology and Rheumatology, Stanford University School of Medicine, Palo Alto, CA, USA.
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Tausche AK, Jansen TL, Schröder HE, Bornstein SR, Aringer M, Müller-Ladner U. Gout--current diagnosis and treatment. DEUTSCHES ARZTEBLATT INTERNATIONAL 2009; 106:549-55. [PMID: 19795010 DOI: 10.3238/arztebl.2009.0549] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2008] [Accepted: 01/19/2009] [Indexed: 01/29/2023]
Abstract
BACKGROUND Because of the changing dietary habits of an aging population, hyperuricemia is frequently found in combination with other metabolic disorders. Longstanding elevation of the serum uric acid level can lead to the deposition of monosodium urate crystals, causing gout (arthritis, urate nephropathy, tophi). In Germany, the prevalence of gouty arthritis is estimated at 1.4%, higher than that of rheumatoid arthritis. There are no German guidelines to date for the treatment of gout. Its current treatment is based largely on expert opinion. METHODS Selective literature review on the diagnosis and treatment of gout. RESULTS AND CONCLUSIONS Asymptomatic hyperuricemia is generally not an indication for pharmacological intervention to lower the uric acid level. When gout is clinically manifest, however, acute treatment of gouty arthritis should be followed by determination of the cause of hyperuricemia, and long-term treatment to lower the uric acid level is usually necessary. The goal of treatment is to diminish the body's stores of uric acid crystal deposits (the intrinsic uric acid pool) and thereby to prevent the inflammatory processes that they cause, which lead to structural alterations. In the long term, serum uric acid levels should be kept below 360 micromol/L (6 mg/dL). The available medications for this purpose are allopurinol and various uricosuric agents, e.g., benzbromarone. There is good evidence to support the treatment of gouty attacks by the timely, short-term use of non-steroidal anti-inflammatory drugs (NSAID), colchicine, and glucocorticosteroids.
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Affiliation(s)
- Anne-Kathrin Tausche
- Bereich Rheumatologie, Medizinische Klinik und Poliklinik III, Universitätsklinikum, Carl Gustav Carus an der TU Dresden, Dresden, Germany.
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Akazawa M, Halpern R, Riedel AA, Stanford RH, Dalal A, Blanchette CM. Economic burden prior to COPD diagnosis: a matched case-control study in the United States. Respir Med 2008; 102:1744-52. [PMID: 18760581 DOI: 10.1016/j.rmed.2008.07.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Revised: 06/27/2008] [Accepted: 07/02/2008] [Indexed: 11/15/2022]
Abstract
BACKGROUND In the United States, chronic obstructive pulmonary disease (COPD) diagnosis is often a lengthy process, and consequently results in delays in treatment in early stages. Disease progression and complication may result in increased levels of healthcare service use. To understand the economic burden of COPD prior to diagnosis in the U.S., trends in utilization and costs during the period before initial COPD diagnosis were compared with matched controls. METHODS A retrospective case-control study was conducted using medical and pharmacy claims data from a large managed care health plan representing a base population of over 30 million covered lives in the U.S. COPD patients with at least 12 months of continuous enrollment and aged 40 years or older were identified (n=28,968) and matched to up to three random controls (n=81,322) by age, gender, region of plans and index date. Multivariate regression models were used to estimate average incremental service use and cost between COPD patients and controls. Moreover, trends in utilization and costs for the COPD patients were examined over 36 months before diagnosis. RESULTS COPD patients used 1.5-1.6 times more inpatient/emergency department (IP/ED) services and office visits compared to control patients. The average incremental annual costs for IP/ED services, office visits, and medical and pharmacy services were estimated at $550, $238, $1438 and $401, respectively, after adjusting for age, gender, region and comorbid conditions. The 36-month trend analysis showed that COPD patients' healthcare utilization and costs increased gradually over time, often with a marked increase in the month before COPD diagnosis. CONCLUSIONS COPD patients in the U.S. consumed substantial healthcare services and costs prior to diagnosis. More timely diagnosis and subsequent treatment may avoid costly healthcare utilization and unnecessary mortality and morbidity post-diagnosis.
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Affiliation(s)
- Manabu Akazawa
- Department of Health Policy and Administration, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Annemans L, Spaepen E, Gaskin M, Bonnemaire M, Malier V, Gilbert T, Nuki G. Gout in the UK and Germany: prevalence, comorbidities and management in general practice 2000-2005. Ann Rheum Dis 2007; 67:960-6. [PMID: 17981913 PMCID: PMC2564789 DOI: 10.1136/ard.2007.076232] [Citation(s) in RCA: 327] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Objective: To investigate and compare the prevalence, comorbidities and management of gout in practice in the UK and Germany. Methods: A retrospective analysis of patients with gout, identified through the records of 2.5 million patients in UK general practices and 2.4 million patients attending GPs or internists in Germany, using the IMS Disease Analyzer. Results: The prevalence of gout was 1.4% in the UK and Germany. Obesity was the most common comorbidity in the UK (27.7%), but in Germany the most common comorbidity was diabetes (25.9%). The prevalence of comorbidities tended to increase with serum uric acid (sUA) levels. There was a positive correlation between sUA level and the frequency of gout flares. Compared with those in whom sUA was <360 μmol/l (<6 mg/dl), odds ratios for a gout flare were 1.33 and 1.37 at sUA 360–420 μmol/l (6–7 mg/dl), and 2.15 and 2.48 at sUA >530 μmol/l ( >9 mg/dl) in the UK and Germany, respectively (p<0.01). Conclusions: The prevalence of gout in practice in the UK and Germany in the years 2000–5 was 1.4%, consistent with previous UK data for 1990–9. Chronic comorbidities were common among patients with gout and included conditions associated with an increased risk for cardiovascular disease, such as obesity, diabetes and hypertension. The importance of regular monitoring of sUA in order to tailor gout treatment was highlighted by data from this study showing that patients with sUA levels ⩾360 μmol/l (⩾6 mg/dl) had an increased risk of gout flares.
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Affiliation(s)
- L Annemans
- Ghent University, Faculty of Medicine, Department of Public Health, Ghent, Belgium.
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Novak S, Melkonian AK, Patel PA, Kleinman NL, Joseph-Ridge N, Brook RA. Metabolic syndrome-related conditions among people with and without gout: prevalence and resource use. Curr Med Res Opin 2007; 23:623-30. [PMID: 17355743 DOI: 10.1185/030079906x167651] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE A cohort of employees with gout were compared to those without to evaluate the differences in prevalence of disorders associated with metabolic syndrome (both those considered underlying and those associated with end-stage morbidity and mortality) as well as the cost of annual medical services (AMS) required for treatment of these conditions. METHODS Employees with gout were identified by International Classification of Diseases-9 (ICD-9) code during the calendar years of 2001-2004 and compared to propensity-score matched employees without gout using the Human Capital Management Services Research Reference Database. T-tests were then used to compare prevalence and average AMS of comorbid disorders defined from Agency for Healthcare and Research Quality (AHRQ) diagnostic categories. RESULTS 'Hyperlipidemia', 'essential hypertension', and 'diabetes mellitus without complications' ranked in the top 10 categories of mean number of AMS for employees with gout using AHRQ specific categories; the values were higher than found for those without gout (all p < 0.0001). 'Essential hypertension', 'hyperlipidemia', 'diabetes mellitus without complications', and 'coronary atherosclerosis' showed an approximate 2:1 prevalence ratio for employees with gout over those without (p < or = 0.05). Main study limitations include the small number of subjects with gout, retrospective study design, and possible miscoding and/or non-coding of individuals with the studied disorders. CONCLUSION These results support the continued need for patients with gout and their clinicians to be aware of the possibility of the increased risk of associated metabolic syndrome and related comorbidities in these individuals, emphasizing the need for prevention when possible and treatment when necessary.
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Affiliation(s)
- Suzanne Novak
- Pharmacy Practice, University of Texas at Austin, Austin, TX, USA
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Chen LX, Schumacher HR. Gout: can we create an evidence-based systematic approach to diagnosis and management? Best Pract Res Clin Rheumatol 2006; 20:673-84. [PMID: 16979531 DOI: 10.1016/j.berh.2006.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The management of gout can be subdivided into four phases. Asymptomatic hyperuricaemia represents the basic underlying metabolic abnormality that can lead to gout. Studies are evaluating whether interventions may be indicated in some cases. Diagnostic criteria for gout and acute flares are still not well defined unless urate crystals are found. Acute attacks of gout are treated with anti-inflammatory measures and the agent of choice is often determined by attack stage, severity and comorbidities that may contra-indicate one or more agents. After attacks subside, there are asymptomatic periods during which decisions must be made about when and how to start urate-lowering measures. If hyperuricaemia persists, there is generally persistence of urate crystals in the joint. Anti-inflammatory prophylaxis is needed when urate-lowering therapy is started. Lifestyle measures should be addressed. If chronic tophaceous gout is diagnosed, urate lowering should be started without delay. New agents are under development that may help with difficult cases.
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Affiliation(s)
- Lan X Chen
- University of Pennsylvannia, Penn-Presbyterian Medical Center, Philadelphia, PA 19104-4283, USA
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