1
|
Xue X, Sun M, Yan F, Dalbeth N, He Y, Li X, Qi H, Chen Y, Yuan X, Li M, Ji A, Terkeltaub R, Li C. Superiority of Low-Dose Benzbromarone Add-On to Low-Dose Febuxostat Compared With Febuxostat Monotherapy in Gout With Combined-Type Hyperuricemia. Arthritis Care Res (Hoboken) 2024; 76:703-711. [PMID: 38130040 PMCID: PMC11039362 DOI: 10.1002/acr.25283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/17/2023] [Accepted: 12/19/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVE There is an unmet need for simpler urate-lowering therapy (ULT) regimens that achieve the serum urate target and improve the overall quality of gout care. We report a comparative effectiveness trial of febuxostat monotherapy versus benzbromarone add-on to low-dose febuxostat in gout specifically with combined renal urate underexcretion and overload. METHODS A prospective randomized trial was conducted on patients with combined-type hyperuricemia and estimated glomerular filtration rate >60 mL/min/1.73 m2 1:1 randomly assigned to febuxostat and benzbromarone combination therapy (initially febuxostat at 20 mg/day, with benzbromarone at 25 mg/day added onto 20 mg/day of febuxostat if not at target) or febuxostat monotherapy (initially 20 mg/day, escalating to 40 mg/day if not at target). The primary end point at 12 weeks was the proportion achieving a serum urate (SU) level <360 μmol/L. Other outcomes included altered liver and kidney function, new-onset urolithiasis, and gout flares. RESULTS There were 250 participants randomized; 219 completed 12-week treatment. More patients in the febuxostat and benzbromarone combination group achieved the SU target compared to patients in the febuxostat monotherapy group (75.5% vs 47.7%; odds ratio 3.37 [95% confidence interval 1.90-5.98]). Safety profiles were comparable between the two groups. CONCLUSION Simply adding on low-dose benzbromarone (25 mg/day) to low-dose (20 mg/day) febuxostat showed superior urate lowering compared to febuxostat monotherapy in gout with a combined-type hyperuricemia. For selected patients, expedited achievement of the SU target in more than 75% of patients using one titration step and low xanthine oxidase inhibitor and uricosuric doses is a potential alternative to standard ULT regimens.
Collapse
Affiliation(s)
- Xiaomei Xue
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mingshu Sun
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- Department of Rheumatology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Fei Yan
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Yuwei He
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinde Li
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Han Qi
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ying Chen
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Xuan Yuan
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Maichao Li
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Aichang Ji
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Robert Terkeltaub
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Changgui Li
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| |
Collapse
|
2
|
Li Y, Merriman TR, Chen H, Lv Q, Yan Y, Xu X, Ji A, Cheng Z, Wang X, Lu D, Han L, Cui L, Wang C, Sun W, Li C, Lu J. Clinical characteristics of adolescent-onset gout in Chinese: A hospital-based cross-sectional study. Semin Arthritis Rheum 2024; 65:152405. [PMID: 38335695 DOI: 10.1016/j.semarthrit.2024.152405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 01/12/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
OBJECTIVE Adolescent-onset gout has a greater impact on the lives and health of patients than adult-onset gout. However, there is a relative lack of clinical information on adolescent-onset gout. Hence, we analyzed a Chinese cohort. METHODS We studied clinical features of 9,003 Chinese patients. Gout onset age of 12 - 19 years is defined as adolescent-onset group (AG), 20 - 40 years as early-onset group (EG), and 41 - 64 years as late-onset group (LG). Multivariable regression analysis evaluated factors associated with recurrent flares, serum urate (SU) levels, and underexcretion type in AG. RESULTS Compared with EG and LG, the AG had higher SU levels [AG: 9.5 (2.2) mg/dL, EG: 8.6 (2.1) mg/dL, LG: 7.73 (2.0) mg/dL, P < 0.001], higher percentage of positive family history of gout (AG: 41.8 %, EG: 29.6 %, LG: 24.6 %, P < 0.001), underexcretion type (AG: 62.4 %, EG: 62.5 %, LG: 58.8 %, P = 0.04), recurrent flares (AG: 78.1 %, EG: 70.3 %, LG: 68.9 %, P = 0.01). Urate-lowering therapy (ULT) initiated [OR 6.58 (95 % CI 1.35 - 32.00)] and hypercholesterolemia [OR 4.16 (95 % CI 1.28 - 13.53)] were associated with recurrent flares. eGFR was identified to be a significant variable of increasing SU levels [beta -0.24 (95 % CI -0.04 to -0.01)]. Hypertriglyceridemia [OR 0.35 (95 % CI 0.17 - 0.71)] was related to underexcretion type. CONCLUSION Adolescent-onset gout patients had clinically distinctive features with higher SU levels, BMI, positive gout family history, underexcretion type and recurrent flares. These specific populations were less likely to achieve ULT target, requiring more clinical attention.
Collapse
Affiliation(s)
- Yushuang Li
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Institute of Metabolic Diseases, Qingdao University, 266003 Qingdao, PR China
| | - Tony R Merriman
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Institute of Metabolic Diseases, Qingdao University, 266003 Qingdao, PR China; Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Haibing Chen
- Department of Endocrinology and Metabolism, Shanghai 10th People's Hospital, Tongji University, 200072 Shanghai, PR China
| | - Qingguo Lv
- Department of Endocrinology and Metabolism, Center for diabetes and metabolism research, West China Hospital of Sichuan University, 610041 Chengdu, PR China
| | - Yinkun Yan
- Center for Non-communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, 100045 Beijing, PR China
| | - Xinmiao Xu
- Department of Endocrinology and Metabolism, Yantai Yeda Hospital, 265599 Yantai, PR China
| | - Aichang Ji
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China
| | - Zan Cheng
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China
| | - Xiaxia Wang
- Department of Cardiology, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China
| | - Di Lu
- Department of the Third Chest, Qingdao Chest Hospital, 266043 Qingdao, PR China
| | - Lin Han
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China
| | - Lingling Cui
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China
| | - Can Wang
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China
| | - Wenyan Sun
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China
| | - Changgui Li
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Institute of Metabolic Diseases, Qingdao University, 266003 Qingdao, PR China
| | - Jie Lu
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, 266003 Qingdao, PR China; Institute of Metabolic Diseases, Qingdao University, 266003 Qingdao, PR China.
| |
Collapse
|
3
|
Qi H, Sun M, Terkeltaub R, Merriman TR, Chen H, Li Z, Ji A, Xue X, Sun W, Wang C, Li X, He Y, Cui L, Dalbeth N, Li C. Hyperuricemia subtypes classified according to renal uric acid handling manifest distinct phenotypic and genetic profiles in people with gout. Arthritis Rheumatol 2024. [PMID: 38412854 DOI: 10.1002/art.42838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 02/19/2024] [Accepted: 02/20/2024] [Indexed: 02/29/2024]
Abstract
OBJECTIVE Hyperuricemia can be stratified into four subtypes according to renal uric acid handling. The aim of this study was to comprehensively describe the biological characteristics (including genetic background) of clinically defined hyperuricemia subtypes in two large geographically independent gout cohorts. METHODS Hyperuricemia subtype was defined as renal uric acid overload (ROL), renal underexcretion (RUE), combined, or renal normal. Twenty single nucleotide polymorphisms (SNP) previously identified as gout-risk loci or associated with serum urate (SU) concentration in the East Asian population were genotyped. Weighted polygenic risk scores were calculated to assess the cumulative effect of genetic risks on the subtypes. RESULTS Of the 4873 participants, 8.8% had ROL subtype, 60.9% RUE subtype, 23.1% combined subtype and 7.2% normal subtype. The ROL subtype independently associated with older age of onset, lower SU, tophi and diabetes; the RUE associated with lower BMI and non-diabetes; the combined subtype associated with younger age of onset, higher BMI, SU and eGFR and smoking; and the normal subtype independently associated with older age of onset, lower SU and eGFR. Thirteen SNPs were associated with gout, with 6 shared loci and subtype-dependent risk loci patterns. High polygenic risk scores associated with ROL subtype (OR=9.63, 95% CI 4.53-15.12), RUE subtype (OR=2.18, 95% CI 1.57-3.03) and the combined subtype (OR=6.32, 95% CI 4.22-9.48) compared with low polygenic risk scores. CONCLUSION Hyperuricemia subtypes classified according to renal uric acid handling have subtype-specific clinical and genetic features, suggesting subtype-unique pathophysiological mechanisms.
Collapse
Affiliation(s)
- Han Qi
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Mingshu Sun
- Department of Rheumatology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Robert Terkeltaub
- VA San Diego VA Healthcare Center, University of California San Diego, USA
| | - Tony R Merriman
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Division of Clinical Immunology and Rheumatology, University of Alabama Birmingham, Birmingham, Alabama, USA
| | - Haibing Chen
- Department of Endocrinology and Metabolism, Shanghai 10th People's Hospital, Tongji University, Shanghai, China
| | - Zhiqiang Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaomei Xue
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Wenyan Sun
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinde Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Changgui Li
- Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| |
Collapse
|
4
|
Shao X, Bai J, Ji A, Sun W. Retrospective analysis of medical emergencies in an oral emergency department. Med Oral Patol Oral Cir Bucal 2023; 28:e539-e544. [PMID: 37099708 PMCID: PMC10635636 DOI: 10.4317/medoral.25947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/22/2023] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND To retrospectively analyze the rescue of medical emergencies and critical patients in the oral emergency department in a hospital during the past 14 years; analyze the general condition of patients, their diagnosis, etiological factors, and outcomes of the disease, so as to improve the ability of oral medical staff to deal with emergencies; and optimize the emergency procedures and resource allocation in such departments. MATERIAL AND METHODS Data and related information of critical patient emergency rescue from the Emergency Department of the Hospital of Stomatology, Peking University from January 2006 to December 2019, were analyzed. RESULTS A total of 53 critical patients were rescued in the oral emergency department in the past 14 years, which is an average of four cases per year, with an incidence rate of 0.00506%. The main type of emergency included hemorrhagic shock and active hemorrhage, with the highest incidence being in the age group of 19-40 years old. Among these cases, 67.92% (36/53) developed emergency and critical diseases before visiting the oral emergency department and 41.51% (22/53) had systemic diseases. After rescue, a total of 48 patients (90.57%) had stable vital signs and 5 (9.43%) died. CONCLUSIONS Oral doctors and other medical staff should be able to rapidly identify medical emergencies in oral emergency departments and commence emergency treatment. The department should be equipped with relevant first-aid drugs and devices, and medical staff should be regularly trained in practical first-aid skills. Patients with oral and maxillofacial trauma, massive hemorrhage and systemic diseases should be evaluated and treated according to their conditions and systemic organ function to prevent and reduce medical emergencies.
Collapse
Affiliation(s)
- X Shao
- 22 Zhongguancun Nandajie, Haidian District Beijing, 100089, China
| | | | | | | |
Collapse
|
5
|
Wang C, Sun W, Dalbeth N, Wang Z, Wang X, Ji X, Xue X, Han L, Cui L, Li X, Liu Z, Ji A, He Y, Sun M, Li C. Efficacy and safety of tart cherry supplementary citrate mixture on gout patients: a prospective, randomized, controlled study. Arthritis Res Ther 2023; 25:164. [PMID: 37679816 PMCID: PMC10483724 DOI: 10.1186/s13075-023-03152-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/27/2023] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND Low urine pH, which may be mediated by metabolic syndrome (MetS), is common in gout. Tart cherries are shown to improve MetS symptoms and possess anti-inflammatory properties. However, the efficacy of tart cherry supplements on urine pH has yet to be studied. OBJECTIVES This study aimed to investigate the efficacy and safety of tart cherry supplementary citrate (TaCCi) mixture on urine pH, serum urate (sUA), C-reactive protein (CRP), and gout flares in gout patients initiating urate-lowering therapy (ULT), in comparison to citrate mixture and sodium bicarbonate. METHODS A prospective, randomized (1:1:1), open-label, parallel-controlled trial was conducted among 282 men with gout and fasting urine pH ≤ 6, who were initiating ULT with febuxostat (initially 20 mg daily, escalating to 40 mg daily if serum urate ≥ 360 μmol/L). Participants were randomized to groups taking either sodium bicarbonate, citrate mixture, or TaCCi mixture. All participants were followed every 4 weeks until week 12. Urine pH and sUA were co-primary outcomes, with various biochemical and clinical secondary endpoints. RESULTS Urine pH increased to a similar extent in all three groups. SUA levels declined in all three groups as well, with no significant differences observed between the groups. At week 12, the TaCCi mixture group exhibited a greater reduction in the urine albumin/creatinine ratio (UACR) compared to the other two groups (p < 0.05). Participants taking TaCCi mixture or citrate mixture experienced fewer gout flares than those in the sodium bicarbonate group over the study period (p < 0.05). Additionally, the TaCCi mixture group had a lower CRP level at week 12 relative to the other two groups (p < 0.01). Adverse events were similar across all three groups. CONCLUSION The TaCCi mixture had similar efficacy and safety on urine alkalization and sUA-lowering as the citrate mixture and sodium bicarbonate in patients with gout. However, the TaCCi mixture resulted in greater improvements in UACR and CRP, which suggests that tart cherry supplements may provide additional benefits for renal protection and reduce inflammation in gout, particularly when starting ULT. TRIAL REGISTRATION This project was registered in ChiCTR ( www.chictr.org.cn ), with the registration number: ChiCTR2100050749.
Collapse
Affiliation(s)
- Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Wenyan Sun
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Zhongjun Wang
- Department of Clinical Laboratory, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuefeng Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Xiaopeng Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Xiaomei Xue
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Lin Han
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Xinde Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Mingshu Sun
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China.
- Department of Rheumatology, the Affiliated Hospital of Qingdao University, Qingdao, China.
| | - Changgui Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China.
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China.
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China.
| |
Collapse
|
6
|
Hu S, Sun M, Li M, Xue X, Terkeltaub R, Wang C, Wang M, Lu J, Ran Z, Li H, Ji A, Sun W, Li X, He Y, Liu Z, Zhang H, Wang X, Ji X, Dalbeth N, Li C. Elevated serum CA72-4 predicts gout flares during urate lowering therapy initiation: a prospective cohort study. Rheumatology (Oxford) 2023; 62:2435-2443. [PMID: 36409036 PMCID: PMC10321093 DOI: 10.1093/rheumatology/keac656] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 11/10/2022] [Indexed: 07/20/2023] Open
Abstract
OBJECTIVE Gout flares during urate-lowering therapy (ULT) initiation are common, but predictors of these flares are poorly understood. The aim of this study was to determine whether serum CA72-4 is an independent predictor for gout flares during ULT initiation. METHODS A prospective cohort study was conducted between March 2021 and January 2022. Men with gout, at least one gout flare in the past year, and at least three serum CA72-4 measurements in the previous six months were enrolled. Participants were grouped according to their highest recorded serum CA72-4 levels (above or within the normal range). All participants took oral febuxostat 20 mg daily without flare prophylaxis therapy, and attended face-to-face visits every four weeks until 24 weeks. The incidence of gout flare was compared between the two groups. Backward stepwise logistic regression analyses were used to identify risk factors associated with flares. Receiver operating characteristic curve analysis was used to evaluate prediction efficacy. RESULTS A total of 193 completed the study (79 with high CA72-4; 114 with normal CA72-4). The cumulative incidence of at least one gout flare was 48.1% (62.1% in the high CA72-4 group, 38.4% in the normal CA72-4 group, P = 0.001), and recurrent (≥2) flares was 33.0% (47.1% in the high CA72-4 group, 23.2% in the normal CA72-4, P < 0.001). High CA72-4, disease duration, intra-articular tophus size, glucose, high-density lipoprotein-cholesterol and ESR were independent risk factors for gout flares. Serum CA72-4 alone predicted recurrent flares with an area under the curve of 0.63 (95% CI = 0.54, 0.71), and 0.78 (95% CI = 0.71, 0.85) when combined with other independent variables. CONCLUSION High serum CA72-4 predicts the risk of gout flares during ULT initiation. TRIAL REGISTRATION ChiCTR; https://www.chictr.org.cn/; ChiCTR2100043573.
Collapse
Affiliation(s)
| | | | | | | | | | - Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ming Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jie Lu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
| | - Zijing Ran
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hailong Li
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Aichang Ji
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Wenyan Sun
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinde Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hui Zhang
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Xuefeng Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaopeng Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Changgui Li
- Correspondence to: Changgui Li, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China. E-mail:
| |
Collapse
|
7
|
Ji A, Kasting JF, Cooke GJ, Marsh DR, Tsigaridis K. Comparison between ozone column depths and methane lifetimes computed by one- and three-dimensional models at different atmospheric O 2 levels. R Soc Open Sci 2023; 10:230056. [PMID: 37153363 PMCID: PMC10154922 DOI: 10.1098/rsos.230056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 04/13/2023] [Indexed: 05/09/2023]
Abstract
Recently, Cooke et al. (Cooke et al. 2022 R. Soc. Open Sci. 9, 211165. (doi:10.1098/rsos.211165)) used a three-dimensional coupled chemistry-climate model (WACCM6) to calculate ozone column depths at varied atmospheric O2 levels. They argued that previous one-dimensional (1-D) photochemical model studies, e.g. Segura et al. (Segura et al. 2003 Astrobiology 3, 689-708. (doi:10.1089/153110703322736024)), may have overestimated the ozone column depth at low pO2, and hence also overestimated the lifetime of methane. We have compared new simulations from an updated version of the Segura et al. model with those from WACCM6, together with some results from a second three-dimensional model. The discrepancy in ozone column depths is probably due to multiple interacting parameters, including H2O in the upper troposphere, lower boundary conditions, vertical and meridional transport rates, and different chemical mechanisms, especially the treatment of O2 photolysis in the Schumann-Runge (SR) bands (175-205 nm). The discrepancy in tropospheric OH concentrations and methane lifetime between WACCM6 and the 1-D model at low pO2 is reduced when absorption from CO2 and H2O in this wavelength region is included in WACCM6. Including scattering in the SR bands may further reduce this difference. Resolving these issues can be accomplished by developing an accurate parametrization for O2 photolysis in the SR bands and then repeating these calculations in the various models.
Collapse
Affiliation(s)
- A. Ji
- Department of Geosciences, Penn State University, University Park, PA 16802, USA
| | - J. F. Kasting
- Department of Geosciences, Penn State University, University Park, PA 16802, USA
| | - G. J. Cooke
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
| | - D. R. Marsh
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK
- National Center for Atmospheric Research, Boulder, CO 80301, USA
| | - K. Tsigaridis
- Center for Climate Systems Research, Columbia University, New York, NY 10025, USA
- NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, USA
| |
Collapse
|
8
|
Yan F, Xue X, Lu J, Dalbeth N, Qi H, Yu Q, Wang C, Sun M, Cui L, Liu Z, He Y, Yuan X, Chen Y, Cheng X, Ma L, Li H, Ji A, Hu S, Ran Z, Terkeltaub R, Li C. Superiority of Low-Dose Benzbromarone to Low-Dose Febuxostat in a Prospective, Randomized Comparative Effectiveness Trial in Gout Patients With Renal Uric Acid Underexcretion. Arthritis Rheumatol 2022; 74:2015-2023. [PMID: 35795968 PMCID: PMC9771863 DOI: 10.1002/art.42266] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/13/2022] [Accepted: 06/10/2022] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The predominant mechanism driving hyperuricemia in gout is renal uric acid underexcretion; however, the standard urate-lowering therapy (ULT) recommendation is first-line xanthine oxidase inhibitor (XOI), irrespective of the cause of hyperuricemia. This comparative effectiveness clinical trial was undertaken to compare first-line nontitrated low-dose benzbromarone (LDBen) uricosuric therapy to XOI ULT with low-dose febuxostat (LDFeb) in gout patients with renal uric acid underexcretion. METHODS We conducted a prospective, randomized, single-center, open-label trial in men with gout and renal uric acid underexcretion (defined as fractional excretion of urate <5.5% and uric acid excretion ≤600 mg/day/1.73 m2 ). A total of 196 participants were randomly assigned to receive LDBen 25 mg daily or LDFeb 20 mg daily for 12 weeks. All participants received daily urine alkalization with oral sodium bicarbonate. The primary end point was the rate of achieving the serum urate target of <6 mg/dl. RESULTS More participants in the LDBen group achieved the serum urate target than those in the LDFeb group (61% compared to 32%, P < 0.001). Rates of adverse events, including gout flares and urolithiasis, did not differ between groups, with the exception of greater transaminase elevation in the LDFeb group (4% for LDBen compared to 15% for LDFeb, P = 0.008). CONCLUSION Compared to LDFeb, LDBen has superior urate-lowering efficacy and similar safety in treating relatively young and healthy patients with renal uric acid underexcretion-type gout.
Collapse
Affiliation(s)
- Fei Yan
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Xiaomei Xue
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Jie Lu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Nicola Dalbeth
- Department of MedicineUniversity of AucklandAucklandNew Zealand
| | - Han Qi
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Qing Yu
- Department of Endocrinology and Metabolismthe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and the Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Mingshu Sun
- Department of Rheumatology and Immunologythe Affiliated Hospital of Qingdao UniversityQingdaoChina
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and the Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and the Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and the Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Xuan Yuan
- Institute of Metabolic DiseasesQingdao UniversityQingdaoChina
| | - Ying Chen
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and the Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Xiaoyu Cheng
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and the Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Lidan Ma
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Hailong Li
- Institute of Metabolic DiseasesQingdao UniversityQingdaoChina
| | - Aichang Ji
- Institute of Metabolic DiseasesQingdao UniversityQingdaoChina
| | - Shuhui Hu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | - Zijing Ran
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| | | | - Changgui Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, Institute of Metabolic Diseases, Qingdao University, and China Shandong Provincial Clinical Research Center for Immune Diseases and GoutQingdaoChina
| |
Collapse
|
9
|
Wang C, Lu J, Sun W, Merriman TR, Dalbeth N, Wang Z, Wang X, Han L, Cui L, Li X, Ji A, Li H, Ji X, He Y, Li C, Liu Z. Profiling of Serum Oxylipins Identifies Distinct Spectrums and Potential Biomarkers in Young People with Very Early Onset Gout. Rheumatology (Oxford) 2022; 62:1972-1979. [PMID: 36111871 PMCID: PMC10152281 DOI: 10.1093/rheumatology/keac507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 08/01/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objective
Oxylipins modulate inflammation via complex pathways. The oxylipin profile in gout remains unexplored. In this study, we systemically profiled oxylipins in young men and identified new oxylipin biomarkers for clinical use in differentiating gout from hyperuricemia.
Methods
Oxylipin profiling was performed in 90 men (30 very early onset gout, 30 asymptomatic HU (HU) and 30 normouricemia (NU), all aged <20 years) divided into discovery and validation sample sets. The dataset was analyzed based on orthogonal projection to latent structure-discriminant analysis (OPLS-DA). Correlation network and pathway enrichment were conducted to reveal potential oxylipin-involved pathways of gout. Candidate oxylipins were further evaluated and optimized in the validation cohort, and differential oxylipin biomarkers combined with or without serum urate were applied to construct diagnosis models.
Results
In discovery stage 21 differential oxylipins between the gout vs HU comparisons and 14 differential oxylipins between the gout vs NU comparisons were discovered. Correlation network analysis was performed and 14(S)-HDHA(14S-hydroxy-4Z, 7Z, 10Z, 12E, 16Z, 19Z-docosahexaenoic acid)was identified as a hub metabolite in both comparisons. Seven down-regulated oxylipins in gout vs HU group and five down-regulated oxylipins in gout vs NU group were validated. Diagnostic models were constructed with the above oxylipins, with 14(S)-HDHA alone acquiring area under the curve (AUC) 1 (95%CI, 1–1) in both comparisons.
Conclusion
Young men with very early onset gout have distinct oxylipin spectrums, especially those derived from AA (arachidonic acid), EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). Differential oxylipins could serve as candidate serum biomarkers in differentiating gout from hyperuricemia.
Collapse
Affiliation(s)
- Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Jie Lu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Wenyan Sun
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
| | - Tony R Merriman
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- University of Alabama at Birmingham Division of Clinical Immunology and Rheumatology, , Birmingham, Alabama, United States
| | - Nicola Dalbeth
- University of Auckland Department of Medicine, , Auckland, New Zealand
| | - Zhongjun Wang
- the Affiliated Hospital of Qingdao University Department of Clinical Laboratory, , Qingdao, China
| | - Xuefeng Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Lin Han
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Xinde Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
| | - Hailong Li
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
| | - Xiaopeng Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Changgui Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University , Qingdao, China
- Institute of Metabolic Diseases, Qingdao University , Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout , Qingdao, China
| |
Collapse
|
10
|
Lopez-Pajares V, Bhaduri A, Zhao Y, Gowrishankar G, Donohue L, Guo M, Guerrero A, Ji A, Garcia O, Gambir S, Khavari P. 419 Glucose controls protein-protein interactions and epidermal differentiation. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
11
|
Pang J, Pan X, Lin L, Li L, Yuan S, Han P, Ji X, Li H, Wang C, Chu Z, Wu H, Fan G, Du X, Ji A. Characterization of Plasma Extrachromosomal Circular DNA in Gouty Arthritis. Front Genet 2022; 13:859513. [PMID: 35464862 PMCID: PMC9019587 DOI: 10.3389/fgene.2022.859513] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/22/2022] [Indexed: 11/15/2022] Open
Abstract
Objective: Extrachromosomal circular DNA elements (eccDNAs) are known for their broad existence in cells and plasma, which may potentially play important roles in many biological processes. Our aim was to identify potentially functional or marked eccDNAs in gout patients. Methods: The Circle-Seq approach was applied for eccDNA detection from plasma in acute gout patients and healthy controls. Further analysis was performed on the distribution of genomic elements and eccDNA gene annotations in two groups. Results: We detected 57,216 and 109,683 eccDNAs from the acute gout and healthy control plasma, respectively. EccDNAs were mapped to the reference genome to identify diverse classes of genomic elements and there was no significant difference of eccDNAs on genomic element annotation between gout and control group. A total of 256 eccDNA-associated genes were detected as gout unique eccDNA genes, including COL1A1 and EPB42, which potentially contribute to hyperuricemia and gout, and a couple of genes involved in inflammation or immune response. Enrichment analysis showed that these eccDNA genes were highly correlated with defense response, stress response, and immune and inflammatory responses, including T cell receptor signaling pathway, Fc epsilon RI signaling pathway, and JAK-STAT signaling pathway. Conclusion: Our discovery reveals the novel potential biological roles of plasma eccDNAs in gouty arthritis.
Collapse
Affiliation(s)
- Jingyuan Pang
- Medical School, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Xiaoguang Pan
- Lars Bolund Institute of Regenerative Medicine, Qingdao-Europe Advanced Institute for Life Sciences, BGI-Qingdao, Qingdao, China
| | - Ling Lin
- Lars Bolund Institute of Regenerative Medicine, Qingdao-Europe Advanced Institute for Life Sciences, BGI-Qingdao, Qingdao, China
| | - Lei Li
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Shuai Yuan
- Emergency Department, Qingdao Third People's Hospital, Qingdao, China
| | - Peng Han
- Lars Bolund Institute of Regenerative Medicine, Qingdao-Europe Advanced Institute for Life Sciences, BGI-Qingdao, Qingdao, China
| | - Xiaopeng Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hailong Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhaobin Chu
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Haoru Wu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
| | - Guangyi Fan
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,BGI-Shenzhen, Shenzhen, China
| | - Xiao Du
- BGI-Qingdao, BGI-Shenzhen, Qingdao, China.,BGI-Shenzhen, Shenzhen, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| |
Collapse
|
12
|
Sun M, Sun W, Zhao X, Li Z, Dalbeth N, Ji A, He Y, Qu H, Zheng G, Ma L, Wang J, Shi Y, Fang X, Chen H, Merriman TR, Li C. A machine learning-assisted model for renal urate underexcretion with genetic and clinical variables among Chinese men with gout. Arthritis Res Ther 2022; 24:67. [PMID: 35264217 PMCID: PMC8905745 DOI: 10.1186/s13075-022-02755-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 02/28/2022] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES The objective of this study was to develop and validate a prediction model for renal urate underexcretion (RUE) in male gout patients. METHODS Men with gout enrolled from multicenter cohorts in China were analyzed as the development and validation data sets. The RUE phenotype was defined as fractional excretion of uric acid (FEUA) <5.5%. Candidate genetic and clinical features were screened by the least absolute shrinkage and selection operator (LASSO) with 10-fold cross-validation. Machine learning algorithms (stochastic gradient descent (SGD), logistic regression, support vector machine) were performed to construct a predictive classifier of RUE. Models were assessed by the area under the receiver operating characteristic curve (AUC) and the precision-recall curve (PRC). RESULTS One thousand two hundred thirty-eight and two thousand twenty-three patients were enrolled as the development and validation cohorts, with 1220 and 754 randomly chosen patients genotyped, respectively. Rs3775948.GG of SLC2A9/GLUT9, rs504915.AA of NRXN2/URAT1, and 7 clinical features (age, hypertension, nephrolithiasis, blood glucose, serum urate, urea nitrogen, and creatinine) were generated by LASSO. Two additional SNP variants (rs2231142.GG of ABCG2 and rs11231463.GG of SLC22A9/OAT7) were selected based on their contributions to gout in the development cohort and their reported effects on renal urate handling. The optimized classifiers yielded AUCs of ~0.914 and PRCs of ~0.980 using these 11 variables. The SGD model was conducted in the validation cohort with an AUC of 0.899 and the PRC of 0.957. CONCLUSIONS A prediction model for RUE composed of four SNPs and readily accessible clinical features was established with acceptable accuracy for men with gout.
Collapse
Affiliation(s)
- Mingshu Sun
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenyan Sun
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuetong Zhao
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Zhiqiang Li
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Aichang Ji
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuwei He
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hongzhu Qu
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Guangmin Zheng
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Lidan Ma
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jiayi Wang
- Department of Pharmacy, Peking University First Hospital, Beijing, China
| | - Yongyong Shi
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiangdong Fang
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Haibing Chen
- Department of Endocrinology and Metabolism, Shanghai 10th People's Hospital, Tongji University, Shanghai, China.
| | - Tony R Merriman
- Department of Biochemistry, University of Otago, Dunedin, New Zealand. .,Department of Medicine, University of Alabama Birmingham, Birmingham, AL, USA.
| | - Changgui Li
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout & Shandong Provincial Key Laboratory of Metabolic Diseases, The Affiliated Hospital of Qingdao University, Qingdao, China.
| |
Collapse
|
13
|
Li H, Zhang H, Yan F, He Y, Ji A, Liu Z, Li M, Ji X, Li C. Kidney and plasma metabolomics provide insights into the molecular mechanisms of urate nephropathy in a mouse model of hyperuricemia. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166374. [PMID: 35276331 DOI: 10.1016/j.bbadis.2022.166374] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 02/04/2022] [Accepted: 03/04/2022] [Indexed: 02/07/2023]
Abstract
Hyperuricemia (HUA) is closely associated with kidney damage and kidney diseases in humans; however, the underlying mechanisms of HUA-induced kidney diseases remain unknown. In the present study, we examined the kidney and plasma metabolic profiles in a HUA mouse model constructed by knocking out (Ko) the urate oxidase (Uox) gene. The Uox-Ko mice were characterized by an increase in uric acid, glycine, 3'-adenosine monophosphate, citrate, N-acetyl-l-glutamate, l-kynurenine, 5-hydroxyindoleacetate, xanthurenic acid, cortisol, and (-)-prostaglandin e2 together with a decrease of inosine in the kidneys. These altered metabolites confirmed disturbances of purine metabolism, amino acid biosynthesis, tryptophan metabolism, and neuroactive ligand-receptor interaction in Uox-Ko mice. Betaine and biotin were related to kidney function and identified as the potential plasma metabolic biomarker for predicting urate nephropathy (UN). Taken together, these results revealed the underlying pathogenic mechanisms of UN. Investigating these pathways might provide novel targets for the therapeutic intervention of UN and can potentially lead to new treatment strategies.
Collapse
Affiliation(s)
- Hailong Li
- Institute of Metabolic Diseases, Qingdao University, Qingdao 266003, China; Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Hui Zhang
- Institute of Metabolic Diseases, Qingdao University, Qingdao 266003, China; Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Fei Yan
- Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Maichao Li
- Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Xiaopeng Ji
- Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Changgui Li
- Institute of Metabolic Diseases, Qingdao University, Qingdao 266003, China; Shandong Provincial Key Laboratory of Metabolic Disease and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao 266003, China.
| |
Collapse
|
14
|
Xue X, Yuan X, Han L, Li X, Merriman TR, Cui L, Liu Z, Sun W, Wang C, Yan F, He Y, Ji A, Lu J, Li C. Effect of Clinical Typing on Serum Urate Targets of Benzbromarone in Chinese Gout Patients: A Prospective Cohort Study. Front Med (Lausanne) 2022; 8:806710. [PMID: 35111784 PMCID: PMC8801777 DOI: 10.3389/fmed.2021.806710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/20/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction Achieving a goal of serum urate levels in patients with gout is an important way to prevent gout and its complications while it remains difficult with a low targeting rate worldwidely. Currently, hyperuricemia classification has not been widely applied to the management of gout owing to insufficient clinical evidences. This study aimed to evaluate the effectiveness of achieving target urate based on hyperuricemia classification in Chinese patients with gout. Methods In this prospective study, patients with gout receiving urate lowering therapy with benzbromarone were assigned to two groups, a renal underexcretion and an unclassified type. The primary endpoint was the proportion of patients achieving the serum urate target (<360 μmol/L) during the 12-week study. The frequency of acute gout attacks as well as physical and chemical indicators were secondary endpoints. Results Target serum urate level was achieved in 60.5% of underexcretors compared with 39.0% of patients of the unclassified type at week 12 (P = 0.002). Blood glucose and cholesterol levels were lower in the underexcretor group compared with the unclassified type group at the end of the trial, without significant different frequencies in gout flare during the study. In subgroup analysis, stratified by body mass index and estimated glomerular filtration rate, the proportion of patients with serum urate <360 μmol/L was greater in the underexcretion compared with the unclassified type group. Conclusions The increased achievement of target serum urate in the underexcretion group supports the use of a clinical hyperuricemia typing treatment strategy for gout.
Collapse
Affiliation(s)
- Xiaomei Xue
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xuan Yuan
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Lin Han
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinde Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Tony R. Merriman
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
- Division of Clinical Immunology and Rheumatology, University of Alabama Birmingham, Birmingham, AL, United States
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenyan Sun
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Fei Yan
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jie Lu
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- *Correspondence: Changgui Li
| | - Changgui Li
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- Jie Lu
| |
Collapse
|
15
|
Li X, Sun W, Lu J, He Y, Chen Y, Ren W, Cui L, Liu Z, Wang C, Wang X, Ma L, Cheng X, Han L, Li H, Zhang H, Yuan X, Ji X, Ji A, Merriman TR, Li C. Effects of fenofibrate therapy on renal function in primary gout patients. Rheumatology (Oxford) 2021; 60:5020-5027. [PMID: 33704429 PMCID: PMC8566261 DOI: 10.1093/rheumatology/keab231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 02/23/2021] [Indexed: 12/27/2022] Open
Abstract
Objective To investigate the incidence and potential risk factors for development of fenofibrate-associated nephrotoxicity in gout patients. Methods A total of 983 gout patients on fenofibrate treatment who visited the dedicated Gout Clinic at the Affiliated Hospital of Qingdao University between September 2016 and June 2020 were retrospectively enrolled from the electronic records system. Fenofibrate-associated nephrotoxicity was defined as an increase in serum creatinine (SCr) ≥0.3 mg/dl within 6 months of fenofibrate initiation. The change trend of SCr and uric acid levels during the treatment period were assessed by a generalised additive mixed model (GAMM). Multivariate analysis was performed for risk factors affecting elevated SCr. Results A total of 100 (10.2%) patients experienced an increase in SCr ≥0.3 mg/dl within 6 months after fenofibrate initiation. The median change of SCr in the whole cohort was 0.11 mg/dl [interquartile range (IQR) 0.03–0.20], whereas it was 0.36 (0.33–0.45) in the fenofibrate-associated nephrotoxicity group. In a multivariable regression model, chronic kidney disease (CKD) [odds ratio (OR) 2.39 (95% CI 1.48, 3.86)] and tophus [OR 2.29 (95% CI 1.39, 3.78)] were identified to be risk predictors, independent of measured covariates, of fenofibrate-associated nephrotoxicity. During the treatment period, although SCr temporarily increased, serum urate and triglyceride concentrations decreased using the interaction analysis of GAMM. Of those with fenofibrate withdrawal records, the SCr increase in 65% of patients was reversed after an average of 49 days off the drug. Conclusions This observational study implied that fenofibrate-associated nephrotoxicity occurs frequently in gout patients, especially in patients with tophi or CKD. The potential renal risks of fenofibrate usage in gout needs additional research.
Collapse
Affiliation(s)
- Xinde Li
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Wenyan Sun
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Jie Lu
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Yuwei He
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Ying Chen
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Wei Ren
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Lingling Cui
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Zhen Liu
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Can Wang
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Xuefeng Wang
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Lidan Ma
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Xiaoyu Cheng
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Lin Han
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Hailong Li
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Hui Zhang
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Xuan Yuan
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Xiaopeng Ji
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Aichang Ji
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University
| | - Tony R Merriman
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China.,Division of Clinical Immunology and Rheumatology, University of Alabama Birmingham, Birmingham, Alabama, USA.,Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Changgui Li
- Department of Endocrinology and Metabolism, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| |
Collapse
|
16
|
Ji A, Shaukat A, Takei R, Bixley M, Cadzow M, Topless RK, Major TJ, Phipps-Green A, Merriman ME, Harré Hindmarsh J, Stamp LK, Dalbeth N, Li C, Merriman TR. Aotearoa New Zealand Māori and Pacific Population-amplified Gout Risk Variants: CLNK Is a Separate Risk Gene at the SLC2A9 Locus. J Rheumatol 2021; 48:1736-1744. [PMID: 34210831 DOI: 10.3899/jrheum.201684] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/11/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The Māori and Pacific (Polynesian) population of Aotearoa New Zealand has a high prevalence of gout. Our aim was to identify potentially functional missense genetic variants in candidate inflammatory genes amplified in frequency that may underlie the increased prevalence of gout in Polynesian populations. METHODS A list of 712 inflammatory disease-related genes was generated. An in silico targeted exome set was extracted from whole genome sequencing data in people with gout of various ancestral groups (Polynesian, European, East Asian; n = 55, 780, 135, respectively) to identify Polynesian-amplified common missense variants (minor allele frequency > 0.05). Candidate functional variants were tested for association with gout by multivariable-adjusted regression analysis in 2528 individuals of Polynesian ancestry. RESULTS We identified 26 variants common in the Polynesian population and uncommon in the European and East Asian populations. Three of the 26 population-amplified variants were nominally associated with the risk of gout (rs1635712 [KIAA0319], ORmeta = 1.28, P meta = 0.03; rs16869924 [CLNK], ORmeta = 1.37, P meta = 0.002; rs2070025 [fibrinogen A alpha chain (FGA)], ORmeta = 1.34, P meta = 0.02). The CLNK variant, within the established SLC2A9 gout locus, was genetically independent of the association signal at SLC2A9. CONCLUSION We provide nominal evidence for the existence of population-amplified genetic variants conferring risk of gout in Polynesian populations. Polymorphisms in CLNK have previously been associated with gout in other populations, supporting our evidence for the association of this gene with gout.
Collapse
Affiliation(s)
- Aichang Ji
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Amara Shaukat
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Riku Takei
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Matthew Bixley
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Murray Cadzow
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Ruth K Topless
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Tanya J Major
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Amanda Phipps-Green
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Marilyn E Merriman
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Jennie Harré Hindmarsh
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Lisa K Stamp
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Nicola Dalbeth
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Changgui Li
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| | - Tony R Merriman
- This research was supported by the Health Research Council of New Zealand (Grant 14/527). 1A. Ji, PhD, Research Fellow, C. Li, PhD, Professor, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China; 2A. Shaukat, MSc, Doctoral Student, M. Bixley, MSc, Assistant Research Fellow, M. Cadzow, PhD, Research Fellow, R.K. Topless, BSc, Assistant Research Fellow, T.J. Major, PhD, Research Fellow, A. Phipps-Green, MSc, Assistant Research Fellow, M.E. Merriman, BSc, Research Assistant, Department of Biochemistry, University of Otago, Dunedin, New Zealand; 3R. Takei, MSc, Scientist, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA; 4J. Harré Hindmarsh, PhD, Research Coordinator, Ngāti Porou Hauora Charitable Trust, Te Puia Springs, Tairāwhiti East Coast, New Zealand; 5L.K. Stamp, PhD, Professor, Department of Medicine, University of Otago, Christchurch, New Zealand; 6N. Dalbeth, MD, Professor, Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; 7T.R. Merriman, BSc, Research Assistant, Shandong Provincial Key Laboratory of Metabolic Diseases, the Affiliated Hospital of Qingdao University, Qingdao, China, Department of Biochemistry, University of Otago, Dunedin, New Zealand, and Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham, Birmingham, USA. A. Ji and A. Shaukat contributed equally to this work. The authors declare no conflict of interest relevant to this article. Address correspondence to T.R. Merriman, School of Biomedical Sciences, Department of Biochemistry, 710 Cumberland Street, Dunedin, Otago 9054, New Zealand. . Accepted for publication June 11, 2021
| |
Collapse
|
17
|
Xue X, Liu Z, Li X, Lu J, Wang C, Wang X, Ren W, Sun R, Jia Z, Ji X, Chen Y, He Y, Ji A, Sun W, Zhang H, Merriman TR, Li C, Cui L. The efficacy and safety of citrate mixture vs sodium bicarbonate on urine alkalization in Chinese primary gout patients with benzbromarone: a prospective, randomized controlled study. Rheumatology (Oxford) 2021; 60:2661-2671. [PMID: 33211886 PMCID: PMC8213434 DOI: 10.1093/rheumatology/keaa668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 09/22/2020] [Indexed: 12/27/2022] Open
Abstract
Objectives To compare the efficacy and safety of citrate mixture and sodium bicarbonate on urine alkalization in gout patients under benzbromarone treatment. Methods A prospective, randomized, parallel controlled trial was conducted among 200 gout patients in the dedicated gout clinic of the Affiliated Hospital of Qingdao University. The participants were randomly divided into two groups (1:1), sodium bicarbonate group (3 g/day) and citrate mixture group (7 g/day). All patients were prescribed with 25 mg/day benzbromarone at initiation and maintained at a dose of 50 mg/day. Clinical and biochemical data were collected at each follow-up time point (baseline, weeks 2, 4, 8 and 12). Results A total of 182 patients completed the 12-week urine alkalization study. The urine pH value of both groups increased significantly from the baseline to the final follow-up time point (sodium bicarbonate group, 5.50–6.00, P < 0.05; citrate mixture group, 5.53–5.93, P < 0.05). While the comparisons regarding urine pH between treatment groups showed no significant differences for each time point. The estimated glomerular filtration rate (eGFR) dropped significantly after 12 weeks’ trial in the sodium bicarbonate group (P < 0.01), while it was comparable between baseline and the last follow-up (P > 0.05) in the citrate mixture group. Results of urine analysis showed that the incident rate of occult blood in the sodium bicarbonate group was higher than that in the citrate mixture group (38 vs 24%, P < 0.05), accompanied by a similar occurrence of kidney stones. After 12-week follow-up, the frequency of twice gout flare in the citrate mixture group was significantly lower than that in sodium bicarbonate group (4 vs 12%, P = 0.037). No treatment-emergent adverse events occurred. Conclusion The efficacy of citrate mixture on urine alkalization is comparable to sodium bicarbonate under benzbromarone treatment without significant adverse events. Citrate mixture is superior to sodium bicarbonate in lowering the incidence of urine occult blood and the frequency of gout attacks. Trial registration Registered with ChiCTR (http://www.chictr.org.cn), No. ChiCTR1800018518.
Collapse
Affiliation(s)
- Xiaomei Xue
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Zhen Liu
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Xinde Li
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Jie Lu
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Can Wang
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Xuefeng Wang
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Wei Ren
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Ruixia Sun
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Zhaotong Jia
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Xiaopeng Ji
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Ying Chen
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Yuwei He
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Aichang Ji
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| | - Wenyan Sun
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Hui Zhang
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Tony R Merriman
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China.,Department of Biochemistry, University of Otago, Dunedin, New Zealand.,Division of Clinical Immunology and Rheumatology, University of Alabama Birmingham, Birmingham, AL, USA
| | - Changgui Li
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Lingling Cui
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, Qingdao, China
| |
Collapse
|
18
|
Li Q, Cen B, Huang W, Chen J, Chen Z, Pang J, Fu W, He S, Ji A. [Development and functional validation of a nano-delivery system of miR-16/polypeptide targeting ovarian cancer cells]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:736-746. [PMID: 34134962 DOI: 10.12122/j.issn.1673-4254.2021.05.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To develop a nano-delivery system for targeted delivery of miR-16/polypeptide for enhancing cisplatin sensitivity of ovarian cancer. OBJECTIVE R9-SS-R9 and cRGD-R9-SS-R9 peptides were synthesized and self-assembled with miR-16 molecules to form a nano-delivery system. The stability, particle size, potential and morphology of the nanoparticles were determined by agarose gel electrophoresis, particle size potentiometer and transmission electron microscopy. CCK-8 assay was used to assess the toxicity of the polypeptides in ovarian cancer cells. Stem loop qRT-PCR and living cell imaging were used to verify the uptake efficiency and intracellular distribution of the nanoparticles. Flow cytometry and Western blotting were performed to verify the effect of the nanoparticles for enhancing cisplatin sensitivity of ovarian cancer cells and explore the possible mechanism. OBJECTIVE R9-SS-R9/miR-16 and cRGD-R9-SS-R9/miR-16 nanoparticles were successfully prepared. The nanoparticles, with a particle size below 150 nm, a dispersity index less than 0.1 and a potential of about 40 mV, showed a good serum stability. The polypeptide material had no obvious cytotoxicity. The miR-16/polypeptide nanoparticles could be efficiently absorbed by human ovarian cancer cells and were distributed in the cytoplasm. The nanoparticles significantly increased the intracellular expression level of miR-16 (P < 0.001) and decreased the expression of Bcl-2 and Chk-1 proteins in ovarian cancer cells, thus enabling miR-16 to promote apoptosis and enhance cisplatin sensitivity of the cells. OBJECTIVE We successfully prepared a miR-16/polypeptide nano-delivery system for targeted delivery of miR-16 to ovarian cancer cells for enhancing cisplatin sensitivity of the cancer cells.
Collapse
Affiliation(s)
- Q Li
- School of Pharmacy, Southern Medical University, Guangzhou 510515, China.,Department of Pharmacy, Nanhai Hospital Affiliated to Southern Medical University, Foshan 528200, China
| | - B Cen
- Department of Radiation Oncology, Affiliated Cancer Hospital of Guangzhou Medical University, Guangzhou 510095, China
| | - W Huang
- School of Pharmacy, Southern Medical University, Guangzhou 510515, China
| | - J Chen
- School of Pharmacy, Southern Medical University, Guangzhou 510515, China
| | - Z Chen
- School of Pharmacy, Southern Medical University, Guangzhou 510515, China
| | - J Pang
- School of Pharmacy, Southern Medical University, Guangzhou 510515, China
| | - W Fu
- School of Pharmacy, Southern Medical University, Guangzhou 510515, China
| | - S He
- Department of Pharmacy, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - A Ji
- Department of Pharmacy, Nanhai Hospital Affiliated to Southern Medical University, Foshan 528200, China
| |
Collapse
|
19
|
Ran Z, Xue X, Han L, Terkeltaub R, Merriman TR, Zhao T, He Y, Wang C, Li X, Liu Z, Cui L, Li H, Ji A, Hu S, Lu J, Li C. Decrease in Serum Urate Level Is Associated With Loss of Visceral Fat in Male Gout Patients. Front Endocrinol (Lausanne) 2021; 12:724822. [PMID: 34594303 PMCID: PMC8476917 DOI: 10.3389/fendo.2021.724822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/24/2021] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE To clarify the relationship between serum urate (SU) decrease and visceral fat area (VFA) reduction in patients with gout. METHODS We retrospectively analyzed 237 male gout patients who had two sets of body composition and metabolic measurements within 6 months. Subjects included had all been treated with urate-lowering therapy (ULT) (febuxostat 20-80 mg/day or benzbromarone 25-50 mg/day, validated by the medical record). All patients were from the specialty gout clinic of The Affiliated Hospital of Qingdao University. The multiple linear regression model evaluated the relationship between change in SU [ΔSU, (baseline SU) - (final visit SU)] and change in VFA [ΔVFA, (baseline VFA) - (final visit VFA)]. RESULTS ULT resulted in a mean (standard deviation) decrease in SU level (464.22 ± 110.21 μmol/L at baseline, 360.93 ± 91.66 μmol/L at the final visit, p <0.001) accompanied by a decrease in median (interquartile range) VFA [97.30 (81.15-118.55) at baseline, 90.90 (75.85-110.05) at the final visit, p < 0.001]. By multiple regression model, ΔSU was identified to be a significant determinant variable of decrease in VFA (beta, 0.302; p = 0.001). CONCLUSIONS The decrease in SU level is positively associated with reduced VFA. This finding provides a rationale for clinical trials to affirm whether ULT promotes loss of visceral fat in patients with gout.
Collapse
Affiliation(s)
- Zijing Ran
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaomei Xue
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lin Han
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Robert Terkeltaub
- San Diego VA Healthcare System, San Diego, CA, United States
- Department of Medicine, University of California San Diego, La Jolla, CA, United States
| | - Tony R. Merriman
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Division of Clinical Immunology and Rheumatology, University of Alabama Birmingham, Birmingham, AL, United States
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Ting Zhao
- Department of Nutrition, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinde Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hailong Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shuhui Hu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jie Lu
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- *Correspondence: Changgui Li, ; Jie Lu,
| | - Changgui Li
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
- Shandong Provincial Clinical Research Center for Immune Diseases and Gout, Qingdao, China
- *Correspondence: Changgui Li, ; Jie Lu,
| |
Collapse
|
20
|
Lu J, He Y, Cui L, Xing X, Liu Z, Li X, Zhang H, Li H, Sun W, Ji A, Wang Y, Yin H, Li C. Hyperuricemia Predisposes to the Onset of Diabetes via Promoting Pancreatic β-Cell Death in Uricase-Deficient Male Mice. Diabetes 2020; 69:1149-1163. [PMID: 32312870 PMCID: PMC7243290 DOI: 10.2337/db19-0704] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 03/23/2020] [Indexed: 12/16/2022]
Abstract
Clinical studies have shown a link between hyperuricemia (HU) and diabetes, while the exact effect of soluble serum urate on glucose metabolism remains elusive. This study aims to characterize the glucose metabolic phenotypes and investigate the underlying molecular mechanisms using a novel spontaneous HU mouse model in which the uricase (Uox) gene is absent. In an attempt to study the role of HU in glycometabolism, we implemented external stimulation on Uox knockout (KO) and wild-type (WT) males with a high-fat diet (HFD) and/or injections of multiple low-dose streptozotocin (MLD-STZ) to provoke the potential role of urate. Notably, while Uox-KO mice developed glucose intolerance in the basal condition, no mice spontaneously developed diabetes, even with aging. HFD-fed Uox-KO mice manifested similar insulin sensitivity compared with WT controls. HU augmented the existing glycometabolism abnormality induced by MLD-STZ and eventually led to diabetes, as evidenced by the increased random glucose. Reduced β-cell masses and increased terminal deoxynucleotidyl TUNEL-positive β-cells suggested that HU-mediated diabetes was cell death dependent. However, urate-lowering therapy (ULT) cannot ameliorate the diabetes incidence or reverse β-cell apoptosis with significance. ULT displayed a significant therapeutic effect of HU-crystal-associated kidney injury and tubulointerstitial damage in diabetes. Moreover, we present transcriptomic analysis of isolated islets, using Uox-KO versus WT mice and streptozotocin-induced diabetic WT (STZ-WT) versus diabetic Uox-KO (STZ-KO) mice. Shared differentially expressed genes of HU primacy revealed Stk17β is a possible target gene in HU-related β-cell death. Together, this study suggests that HU accelerates but does not cause diabetes by inhibiting islet β-cell survival.
Collapse
Affiliation(s)
- Jie Lu
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoming Xing
- Department of Pathology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhen Liu
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xinde Li
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hui Zhang
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Hailong Li
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Wenyan Sun
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yao Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Huiyong Yin
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), Shanghai, China
| | - Changgui Li
- Shandong Provincial Key Laboratory of Metabolic Diseases, Qingdao Key Laboratory of Gout, and Department of Endocrinology and Metabolism, the Affiliated Hospital of Qingdao University, Qingdao, China
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| |
Collapse
|
21
|
Liang N, Sun M, Sun R, Xu T, Cui L, Wang C, Ma L, Cheng X, Xue X, Sun W, Yuan X, Zhang H, Li H, He Y, Ji A, Wu X, Li C. Baseline urate level and renal function predict outcomes of urate-lowering therapy using low doses of febuxostat and benzbromarone: a prospective, randomized controlled study in a Chinese primary gout cohort. Arthritis Res Ther 2019; 21:200. [PMID: 31477161 PMCID: PMC6719374 DOI: 10.1186/s13075-019-1976-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Accepted: 08/16/2019] [Indexed: 02/07/2023] Open
Abstract
Background Low doses of febuxostat or benzbromarone are widely used in Asian countries, but lacking studies to compare the efficacy and safety of the two urate-lowering drugs. Methods To compare the efficacy and safety of low-dose febuxostat with low-dose benzbromarone in patients with primary gout, a randomized controlled, open-label trial was performed among male patients with primary gout for urate-lowering therapy (ULT) in a dedicated gout clinic in China. Randomization was carried out by a third-party institution according to random number table. Patients were randomly assigned 1:1 to febuxostat group (Feb group) (20 mg daily) or benzbromarone group (Ben group) (25 mg daily) and treated for 12 weeks. General information and biochemical data were collected at baseline and at every visit monthly. Clinical characteristics before and after the ULT were analyzed in the two groups by SPSS and EmpowerStats software. Results Two hundred forty patients were enrolled and randomized in the two groups, with 214 patients completing 12 weeks’ ULT (105 in the Feb group and 109 in the Ben group). After 12 weeks, substantial percentages of patients in both Feb and Ben group achieved the target serum uric acid (sUA) (< 360 μmol/L) and serum urate levels were reduced significantly for both groups (Feb 39.5% and 156.83 μmol/L vs. Ben 35.7% and 163.99 μmol/L). Multivariate analysis suggests baseline sUA level and renal function were associated with the outcome of the rate of achieving target sUA (RAT). Sub-group analysis suggests low doses of febuxostat and benzbromarone rendered better RAT for patients with sUA < 540 μmol/L and creatinine clearance rate (Ccr) ≤ 110 mL min−1 1.73 m−2 at baseline. The drugs were well tolerated, and the incidence of gout flares in Feb group was similar with that in Ben group (22.85% vs. 33.94%). Conclusion Overall, febuxostat 20 mg daily and benzbromarone 25 mg daily reduced sUA, and gout patients with sUA level < 540 μmol/L or Ccr ≤ 110 mL min−1 1.73 m−2 at baseline had better chance to achieve target uric acid levels. The current study suggests sUA level and renal function are key factors to consider when recommending low doses of febuxostat and benzbromarone to gout patients. Trial registration Registered with ChiCTR, No. ChiCTR1800019352 (retrospectively registered).
Collapse
Affiliation(s)
- Nan Liang
- The Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China.,Qingdao University, Qingdao, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mingshu Sun
- Department of Rheumatology and Clinical Immunology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ruixia Sun
- The Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ting Xu
- Department of Geratology, the 971th Hospital of PLA, Qingdao, China
| | - Lingling Cui
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Can Wang
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lidan Ma
- The Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaoyu Cheng
- The Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaomei Xue
- The Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China.,Qingdao University, Qingdao, China.,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenyan Sun
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Xuan Yuan
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Hui Zhang
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Hailong Li
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Yuwei He
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Aichang Ji
- Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China.,Institute of Metabolic Diseases, Qingdao University, Qingdao, China
| | - Xinjiang Wu
- Institute of Metabolic Diseases, Qingdao University, Qingdao, China.
| | - Changgui Li
- The Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, China. .,Shandong Provincial Key Laboratory of Metabolic Diseases and Qingdao Key Laboratory of Gout, the Affiliated Hospital of Qingdao University, Qingdao, China. .,Institute of Metabolic Diseases, Qingdao University, Qingdao, China.
| |
Collapse
|
22
|
Ji A, Rubin A, Hollmig S, Aasi S, Khavari P. 182 Single-cell RNA-sequencing reveals SCC intratumoral heterogeneity. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
23
|
Ji A, Li X, Fang S, Qin Z, Bai C, Wang C, Zhang Z. Primary culture of Zhikong scallop Chlamys farreri hemocytes as an in vitro model for studying host-pathogen interactions. Dis Aquat Organ 2017; 125:217-226. [PMID: 28792420 DOI: 10.3354/dao03145] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Primary cultured cells can be a useful tool in studies on physiology, virology, and toxicology. Hemocytes play an important role in animal rapid response to pathogen invasion. In this study, an appropriate medium for primary culture of hemocytes of the bivalve Chlamys farreri was developed by adding 5% fetal bovine serum and 1% C. farreri serum to Leibovitz L-15 medium. These primary cultured hemocytes were maintained for more than 40 d in vitro and were classified into 3 types: (1) granulocytes containing numerous granules in the cytoplasm, (2) hyalinocytes with no or few granules, (3) a small percentage of macrophage-like cells. Furthermore, the primary cultured hemocytes were observed to be sensitive to bacterial and viral challenges. These hemocytes could phagocytose the bacterium Vibrio anguillarum, and presented cytopathic effects on the extracellular products (ECPs) of V. anguillarum; the mRNA level of QM, which plays an important role in immune response, also significantly increased 12 h after infection. When these hemocytes were challenged with ostreid herpesvirus 1 (OsHV-1), virus particles and empty capsids in the cells infected for 48 h were observed by transmission electron microscopy, and the QM mRNA level increased significantly at 12 h and 24 h following OsHV-1 challenge. This primary culture system is available for C. farreri hemocytes which can be used in the future to study host-pathogen interactions.
Collapse
Affiliation(s)
- Aichang Ji
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Qingdao 266003, PR China
| | | | | | | | | | | | | |
Collapse
|
24
|
Ma X, Ji A, Zhang Z, Yang D, Liang S, Wang Y, Qin Z. Piwi1 is essential for gametogenesis in mollusk Chlamys farreri. PeerJ 2017; 5:e3412. [PMID: 28652931 PMCID: PMC5483327 DOI: 10.7717/peerj.3412] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 05/14/2017] [Indexed: 11/23/2022] Open
Abstract
Piwi (P-element induced wimpy testis) is an important gene involved in stem cell maintenance and gametogenesis in vertebrates. However, in most invertebrates, especially mollusks, the function of Piwi during gametogenesis remains largely unclear. To further understand the function of Piwi during gametogenesis, full-length cDNA of Piwi1 from scallop Chlamys farreri (Cf-Piwi1) was characterized, which consisted of a 2,637 bp open reading frame encoding an 878-amino acid protein. Cf-Piwi1 mRNA was mainly localized in the spermatogonia, spermatocytes, oogonia, oocytes of early development and intra-gonadal somatic cells. Additionally, the knockdown of Cf-Piwi1 by injection of Cf-Piwi1-dsRNA (double-stranded RNA) into scallop adductor led to a loss of germ cells in C. farreri gonads. Apoptosis was observed mainly in spermatocytes and oocytes of early development, as well as in a small number of spermatogonia and oogonia. Our findings indicate that Cf-Piwi1 is essential for gametogenesis in the scallop C. farreri.
Collapse
Affiliation(s)
- Xiaoshi Ma
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, China
| | - Aichang Ji
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, China
| | - Zhifeng Zhang
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, China
| | - Dandan Yang
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, China
| | - Shaoshuai Liang
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, China
| | - Yuhan Wang
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, China
| | - Zhenkui Qin
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, Ocean University of China, Qingdao, China
| |
Collapse
|
25
|
Ji A, Chang Y, Fu Y, Lee O, Ho J. Niche-dependent Regulations of Metabolic Balance in High-fat Diet Induced Diabetic Mice by Mesenchymal Stromal Cells. Cytotherapy 2016. [DOI: 10.1016/j.jcyt.2016.03.240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
26
|
Hsiao C, Ji A, Chang C, Cheng C, Lee L, Ho J. Local Injection of Mesenchymal Stem Cells Protects Testicular Torsion-induced Germ Cell Injury. Cytotherapy 2016. [DOI: 10.1016/j.jcyt.2016.03.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
27
|
Xie G, Ji A, Yuan Q, Jin Z, Yuan Y, Ren C, Guo Z, Yao Q, Yang K, Lin X, Chen L. Tumour-initiating capacity is independent of epithelial-mesenchymal transition status in breast cancer cell lines. Br J Cancer 2014; 110:2514-23. [PMID: 24755887 PMCID: PMC4021510 DOI: 10.1038/bjc.2014.153] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 02/24/2014] [Accepted: 02/26/2014] [Indexed: 12/18/2022] Open
Abstract
Background: Epithelial–mesenchymal transition (EMT) and cancer stem cells (CSCs) are considered to be crucial for cancer biology. The purpose of this study was to determine whether EMT directly led to the acquisition of tumour-initiating capacity in breast cancer cell lines. Methods: Epithelial–mesenchymal transition was induced in five breast cancer cell lines and one normal breast cell line by EMT-related cytokine stimulation. Mesenchymal–epithelial transition (MET) was induced by stably overexpressing miR-200c in three mesenchymal-like breast cancer cell lines. Molecular expression and cell function analysis were performed to evaluate the effect of EMT or MET on tumour-initiating capacity and other biological characteristics. Results: The induction of EMT did not enhance tumour-initiating capacity but, instead, conferred a CD44+/CD24−/low phenotype as well as cell proliferation, migration, and resistance to doxorubicin and radiation on breast cancer cell lines. Furthermore, MET did not lead to inhibition or loss of the tumour-initiating capacity in mesenchymal-like breast cancer cell lines, but it markedly attenuated other malignant properties, including proliferation, invasion, and resistance to therapy. Conclusions: Epithelial–mesenchymal transition does not alter tumour-initiating capacity of breast cancer cells but some other biological characteristics. Therefore, EMT and tumour-initiating capacity may not be directly linked in breast cancer cell lines.
Collapse
Affiliation(s)
- G Xie
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - A Ji
- Department of Pharmaceutical Science, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, PR China
| | - Q Yuan
- Jules Stein Eye Institute, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Z Jin
- Department of Pharmacy, Jining First People's Hospital, Jining, Shandong 272111, PR China
| | - Y Yuan
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - C Ren
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Z Guo
- Breast Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - Q Yao
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - K Yang
- Department of Neurosurgery, Institute of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - X Lin
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| | - L Chen
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, PR China
| |
Collapse
|
28
|
Wei W, Ji A, Wang J, Wei Z, Lian C, Yang J, Ma L, Ma L, Qin X, Wang LD. Functional single nucleotide polymorphism in C20orf54 modifies susceptibility to esophageal squamous cell carcinoma. Dis Esophagus 2013; 26:97-103. [PMID: 22533825 DOI: 10.1111/j.1442-2050.2012.01339.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The aim of this study was to explore the association of C20orf54 functional single nucleotide polymorphism (SNP) with the susceptibility to esophageal squamous cell carcinoma (ESCC) in a northern China population. The C20orf54 SNP was genotyped by direct sequencing in 240 cancer patients and 198 controls in northern China. The results showed that drinking status, family history of ESCC, and body mass index have great influence on the risk of developing ESCC. The overall genotype frequencies of C20orf54 in ESCC patients have a significant difference with healthy controls (χ(2) = 8.06, P = 0.018). By using C/C genotype as the reference, the C/T genotype showed a significantly decreased risk to the development of ESCC. Thus, compared with the C/C genotype, smokers, drinkers with C/T genotype significantly decreased the risk of developing ESCC. A positive family history of ESCC with C/T and T/T genotype both increased the risk of developing ESCC. Body mass index between 18.5 and 24 with C/T genotype significantly decreased the risk of developing ESCC. The present study suggests that the C20orf54 functional SNP might be associated with a risk of development in ESCC.
Collapse
Affiliation(s)
- W Wei
- Central Laboratory, Heping Hospital-Changzhi Medical College, 161 Jie Fang Dong Street, Changzhi, Shanxi Province, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Souayah N, Chen H, Abukwaik W, Tishuk P, Ji A, Patel T, Khan H, Maybodi L. 61. A novel marker for neuroinflammation in diabetic neuropathy. Clin Neurophysiol 2012. [DOI: 10.1016/j.clinph.2011.11.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
30
|
Abukwaik W, Khan H, Sheikh Z, Ji A, Islam S, Kheradia T, Saxene A, Souayah N. Trends in Outcome and Cost of Hospitalization of Pediatric Myasthenia Gravis Patients Treated with Intravenous Immunoglobulin from 1992 to 2009 (P04.177). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p04.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
31
|
Abstract
In a previous study, we showed that ultrasound can dramatically reduce the time required for tissue fixation in formalin. It generally is believed that ultrasound increases the speed of tissue fixation in two possible ways: 1) increasing the speed of penetration of fixative molecules into tissue samples and 2) increasing the speed of cross-linking reactions. We addressed here the second possible way by using protein solutions and cultured cells, which minimized the effects of the penetration factor. Proteins or cultured cells in solution were fixed with formalin with or without ultrasound irradiation. Fixed proteins and cell lysates then were separated by SDS-poly acrylamide gel electrophoresis and subjected to Western blotting to examine cross-linking formation in certain proteins. Unexpectedly, irradiation with ultrasound did not produce an observable difference in the rate of cross-linking in protein solutions. In similar experiments using cultured cells, however, we observed a significant reduction in recovery of certain proteins from cells fixed by formalin under the influence of ultrasound, which indicated that the ultrasound fixation procedure accelerated cross-linking formation within cells. Studies on protein and cell fixation without ultrasound showed that cross-linking formation was closely related to incubation temperature, which indicates that the heating function, which is inherently associated with ultrasound is another major factor in the ability of ultrasound to accelerate cross-linking.
Collapse
Affiliation(s)
- N Zou
- Department of Scientific Laboratories, American Registry of Pathology, Washington, DC, USA
| | | | | | | | | | | | | |
Collapse
|
32
|
Jahangiri A, de Beer M, Wroblewski J, Noffsinger V, Ji A, de Beer F. Abstract: P1157 CETP LIBERATES LIPID-POOR APOA-I FROM ACUTE PHASE HDL AND REDUCES HDL LEVELS DURING INFLAMMATION IN VIVO. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71150-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
33
|
Ji A, Shu S, Li M, Bao X, Zou H, Zhang Z. Expression of recombinant rat Neurotrophin-3 in Chinese hamster ovary cells. Sci China C Life Sci 2008; 42:655-62. [PMID: 18726489 DOI: 10.1007/bf02881584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/1999] [Indexed: 11/29/2022]
Abstract
The CHO cell line stably producing recombinant rat NT-3 was established. The insertion of rNT-3 cDNA into transferred cell gonome was analyzed with Southern blot. The expressed protein was identified by Dot ELISA (enzyme-linked immunosorbent assay) and Western blot. Western blot showed a clear specific band of about 14 ku for NT-3. The mean level of rNT-3 in four NT-3cDNA/CHO cell lines was about 2 100 ng/10(6) cells/48 h determined by EIA. The conditioned-medium (CM) of NT-3cDNA/CHO cells could promote the fiber outgrowth of the dissociated dorsal root ganglion of 8-day-old chick embryos, which shows a dose-response relationship. A half-maximal concentration of the biological activity (EC50) of the recombinant protein was approximately 16.7 ng/mL. The MoAb 3W3 of NT-3 could neutralize the biological activity of the rNT-3.
Collapse
Affiliation(s)
- A Ji
- Zhujiang Hospital, The First Military Medical University, Guangzhou, China
| | | | | | | | | | | |
Collapse
|
34
|
Cai L, Ji A, Li Y, deBeer F, Tannock L, vander westhuyzen D. THE HDL RECEPTOR SR-BI PLAYS AN IMPORTANT ROLE IN INFLAMMATION AND PROTECTS AGAINST ENDOTOXEMIA IN MICE. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70165-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
35
|
|
36
|
De Beer M, Cai L, Ji A, De Beer F, Vander Westhuyzen D. PO4-105 SAA BLOCKS MODIFIED LDL UPTAKE AND PROMOTES CELLULAR CHOLESTEROL EFFLUX IN A CD36-SPECIFIC MANNER. ATHEROSCLEROSIS SUPP 2007. [DOI: 10.1016/s1567-5688(07)71115-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
37
|
Ji A, Wiggers H, Walzel P. Charakterisierung der Tropfenverteilung und -geschwindigkeit von Dispersionen mit Fasersensoren. CHEM-ING-TECH 2006. [DOI: 10.1002/cite.200600049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
38
|
Hennan J, Morgan G, Swillo R, Ji A, Guan L, Crandall D. ID: 190 Efficacy of PAI-749, an orally active PAI-1 inhibitor, in dog and rat models of arterial and venous thrombosis. J Thromb Haemost 2006. [DOI: 10.1111/j.1538-7836.2006.00190.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
39
|
Jin E, Ma D, Liang Y, Ji A, Gan S. MRI findings of eosinophilic myelomeningoencephalitis due to Angiostrongylus cantonensis. Clin Radiol 2005; 60:242-50. [PMID: 15664579 DOI: 10.1016/j.crad.2004.05.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2004] [Revised: 04/26/2004] [Accepted: 05/04/2004] [Indexed: 10/25/2022]
Abstract
AIM To study the imaging characteristics of eosinophilic myelomeningoencephalitis due to Angiostrongylus cantonensis using magnetic resonance imaging (MRI). MATERIALS AND METHODS Seventeen MRI examinations of the brain and spinal cord in five patients with angiostrongyliasis cantonensis of the central nervous system were performed. The final diagnosis was based on typical clinical symptoms, results of blood and cerebrospinal fluid (CSF) tests, and the presence of nematode larvae in the CSF. The sequential MRI follow-up examinations were carried out at a different stage for every patient from 1 to 28 weeks after the onset of symptoms. The features of the lesions in the brain, spinal cord, meninges and nerve roots on MRI were studied, moreover, the development of the lesions was analysed on follow-up MRI. RESULTS Abnormalities were demonstrated on MRI in all five cases. They included three cases of meningoencephalitis, one case of encephalitis and one myelomeningitis. The locations and appearances of the lesions were as follows: (1) brain involvement in four cases (including cerebrum in four, cerebellum in two and brain stem in three), and spinal cord involvement in one case. These lesions were diffuse or scattered and appeared as similar or slightly reduced signal intensity on T1-weighted images (T1WI), high signal intensity on T2-weighted images (T2WI) and turbo fluid attenuated inversion recovery pulse sequence (FLAIR) images. After administration of gadolinium chelate (Gd-DTPA), multiple round or oval enhancing nodules, with diameters ranging from 3 to 10 mm, were seen on T1WI, a few lesions appeared as stick-shaped enhancement whose longest measurement was 14 mm. Diffuse or local oedema around the lesion could be seen. (2) Meningeal involvement in four cases, a case of ependymal involvement and a case of nerve root involvement were among them. These lesions appeared as linear or nodular enhancement of the leptomeninges and ependyma, as well as nerve root enhancement. (3) There was a mild ventricular enlargement in two cases. On follow-up MRI lesions were most severe from the 5th week to the 8th week and it took at least 4-8 weeks (1-2 months) for a lesion to resolve completely, the resolution of larger lesion needed more than 22 weeks. CONCLUSION Multiple enhancing nodules in the brain and linear enhancement in the leptomeninges were the main features; stick-shaped enhancement was the characteristic sign of the disease on Gd-DTPA enhanced-T1 weighted images.
Collapse
Affiliation(s)
- E Jin
- Department of Radiology, Beijing Friendship Hospital affiliate of Capital University of Medical Sciences, 95 Yong-An Road, Beijing 100050, China.
| | | | | | | | | |
Collapse
|
40
|
|
41
|
Boado RJ, Ji A, Pardridge WM. Cloning and expression in Pichia pastoris of a genetically engineered single chain antibody against the rat transferrin receptor. J Drug Target 2001; 8:403-12. [PMID: 11328666 DOI: 10.3109/10611860008997916] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The present investigation describes the construction of a genetically engineered single chain antibody (scFv) against the rat transferrin receptor (OX26), and demonstrates that this scFv antibody can be fully processed and expressed as a soluble secreted molecule in the methylotrophic yeast Pichia pastoris. Restriction endonuclease sites located at both 5'- and 3'-flanking regions of OX26 coding region in the prokaryote pOPE-OX26 vector were engineered to incorporate yeast compatible restriction endonuclease sites (i.e. EcoRI and SmaI or AvrII). The modified OX26 cDNA was subcloned into the Pichia expression vectors pPIC9 and pHIL-S1. An OX26 scFv high producer clone [GS115 His+ Mut+ (pPIC-OX26 SacI)] was isolated and used for large-scale production and characterization. Because the engineered scFv contains both a c-myc tag and a (His)5 tail, the OX26 scFv was purified to homogeneity by immobilized metal affinity chromatography. The identity of the OX26 scFv was confirmed by Western blot analyses with both anti c-myc and anti poly-His antibodies. Minor immunoreactive bands corresponding to hyperglycosylated and partially processed alpha-factor leader prosequence were also detected in the purified OX26 scFv, and these contaminants were markedly reduced when the expression of the OX26 scFv was performed in minimal methanol medium buffered with phosphate at pH = 7. The present investigation suggests that this expression system may be useful for the production of anti-receptor single chain antibodies that can be used as brain drug delivery vectors.
Collapse
Affiliation(s)
- R J Boado
- Department of Medicine and Brain Research Institute, UCLA School of Medicine, Los Angeles, CA 90095-1682, USA.
| | | | | |
Collapse
|
42
|
Ji A, Gao P. Substrate selectivity of Gluconobacter oxydans for production of 2,5-diketo-D-gluconic acid and synthesis of 2-keto-L-gulonic acid in a multienzyme system. Appl Biochem Biotechnol 2001; 94:213-23. [PMID: 11563824 DOI: 10.1385/abab:94:3:213] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2000] [Revised: 11/01/2000] [Accepted: 11/01/2000] [Indexed: 11/11/2022]
Abstract
Substrate selectivity of Gluconobacter oxydans (ATCC 9937) for 2,5-diketo-D-gluconic acid (2,5-DKG) production was investigated with glucose, gluconic acid, and gluconolactone in different concentrations using a resting-cell system. The results show that gluconic acid was utilized favorably by G. oxydans as substrate to produce 2,5-DKG. The strain was coupled with glucose dehydrogenase (GDH) and 2,5-DKG reductase for synthesis of 2-keto-L-gulonic acid (2-KLG), a direct precursor of L-ascorbic acid, from glucose. NADP and NADPH were regenerated between GDH and 2,5-DKG reductase. The mole yield of 2-KLG of this multienzyme system was 16.8%. There are three advantages for using the resting cells of G. oxydans to connect GDH with 2,5-DKG reductase for production of 2-KLG: gluconate produced by GDH may immediately be transformed into 2,5-DKG so that a series of problems generally caused by the accumulation of gluconate would be avoided; 2,5-DKG is supplied directly and continuously for 2,5-DKG reductase, so it is unnecessary to take special measures to deal with this unstable substrate as it was in Sonoyama's tandem fermentation process; and NADP(H) was regenerated within the system without any other components or systems.
Collapse
Affiliation(s)
- A Ji
- Department of Pharmacy, Shandong University, Jinan, China
| | | |
Collapse
|
43
|
Zeng J, Shu SY, Bao X, Zou F, Ji A, Ye J. Properties of acetylcholine receptor ion channels in the acutely dissociated neurons of the marginal division in the rat striatum. Neurochem Res 1999; 24:1571-5. [PMID: 10591408 DOI: 10.1023/a:1021160317569] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Cell-attached mode of patch clamp technique was employed to investigate the properties of acetylcholine (ACh)-induced ion channels in acutely dissociated neurons from the marginal division (MrD) of rat striatum. Two types of conductance states (25 pS and 60 pS) were recorded. The 25 pS channel (more than 80%) was the main type in the neurons of MrD and was described here. The amplitudes of inward currents increased with hyperpolorization and the reversing potential was about 0 mV. Both single short opening and long burst openings were observed in MrD neurons. Two-time constants of these two kinds of ion channels are 0.29 ms, 1.84 ms and 1.96 ms, 18.24 ms, respectively. Average close time can be fitted with two exponential functions, the two time constants are 1.7 ms and 54 ms. Probability of channel opening is about 0.012 and no voltage-dependence was found. The properties of reversing potential, voltage-independence and the form of agonist to the ion channels indicated that the recorded channel currents flow through AChR channels. The mAChR is involved in slow synaptic transmission and Ach can not induce the opening of mAChR ion channel. The binding site of ACh to AChR and the nAChR ion channel are the same protein, ACh can only activate nAChR ion channel directly. Therefore, the recorded ion channels in the present study are nAChR ion channels. The results suggest that nAChR ion channels exist in the neurons of MrD and the MrD probably is involved in learning and memory mechanism of the brain.
Collapse
Affiliation(s)
- J Zeng
- The Institute for Neuroscience of the First Military Medical University, Zhujiang Hospital, Guangzhou, China
| | | | | | | | | | | |
Collapse
|
44
|
Ji A, Zhao W, Wang Z. [Clinical and experimental study on treatment of Helicobacter pylori infected gastritis by xialian yiyou capsule]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1999; 19:595-8. [PMID: 11783172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To observe the therapeutic effect of Xialian Yiyou Capsule (XLYYC) on helicobacter pylori (HP) infected gastritis to develop the serial Chinese classical recipe. METHODS HP infected patients were divided into two groups, 136 patients in the XLYYC group treated with XLYYC and 90 patients in the control group treated with Lizhu Dele Capsule, for 4 weeks as one therapeutic course, the clinical therapeutic effect was observed, and corresponding animal experiments were done. RESULTS Clinical effect of the XLYYC group was better than that of the control group in improving clinical symptoms, relieving inflammation of gastric mucosa and eliminating HP (P < 0.05, P < 0.01). Results of animal experiment showed that XLYYC was superior than the control significantly in anti-inflammation, analgesia, stomach emptying and curing gastric ulcer model (P < 0.05, P < 0.01). Without any adverse reaction has been found in acute toxicologic study. CONCLUSION The therapeutic effect of XLYYC in treating HP infected gastritis was definite and safe, non-toxic.
Collapse
Affiliation(s)
- A Ji
- First Affiliated Hospital of Henan College of TCM, Zhengzhou (450000)
| | | | | |
Collapse
|
45
|
Luo L, Guo C, Ma G, Ji A. [Neural cluster structure with single component prediction in multiple variable systems for X-ray fluorescence spectrometry]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:426-429. [PMID: 15819081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A neural cluster structure with single component prediction (NCSCP) was proposed for X-ray fluorescence spectrometry in a multivariable system. The neural cluster structure is built by the collection of a group of neurons which have close relationships among one another. In X-ray fluorescence analysis, the structure is constructed by choosing the elements in which there exist serious matrix effects, and deleting the components containing large noise. The predictability of the neural cluster structure was compared with that of the classical backward error propagation algorithm with single component prediction. The results show that the neural cluster structure is significantly superior to the classical algorithm in prediction accuracy, antidisturbance and the predictabilty to outliers.
Collapse
Affiliation(s)
- L Luo
- National Research Center of Geoanalysis, 100037 Beijing
| | | | | | | |
Collapse
|
46
|
Ji A, Gao C, Ikuemon K. [Changes of surface roughness and glossiness of the composite resins during polishing]. Zhonghua Kou Qiang Yi Xue Za Zhi 1999; 34:181-3. [PMID: 11776936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To investigate the changes of surface roughness and glossiness of the composite resins during polishing. METHODS Nine conventional composite resins were evaluated. Composite specimens were polymerized on celluloid strip, so, smooth surfaces were obtained for each specimen, then the smooth surface of the specimens were sequentially polished with diamond polishing papers grits #240, #320, #400, #600, #800 and #1200. The roughness and glossiness of the central surface at 60 degrees reflex angle were measured. RESULTS The results showed that the values of roughness decreased steadily when specimens were polished with sequential polishing paper from coarse to fine one. A further polishing with grit #800, the values of roughness resumed to the pre-polishing values in all the composite specimen. The change of values of glossiness is very small within polishing with #240-#600. A further polishing with grit #800 and #1200, the values of glossiness increased jumpily. The values of glossiness of five composite resins reached or surpassed the level of pre-polishing. CONCLUSION This study indicates that fine surface would not be gained until the composite resins were polished with grit #800 and #1200 polishing paper.
Collapse
Affiliation(s)
- A Ji
- School of Stomatology, Beijing Medical University, Beijing 100081
| | | | | |
Collapse
|
47
|
Tao G, Ji A, Zhuo S. [FPMULTI--a software for multi-layer composition and thickness analysis and its applications]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:215-218. [PMID: 15819013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Main features of FPMULTI, a software for analyzing composition and thickness of multi-layer samples simultaneously using XRF, are briefly described in this paper. Based on fundamental parameter method, the software has the capability of determining multi-layer samples containing up to 10 layers and 25 elements. Calibration standards can be bulk or multi-layer of pure element or multi-element standards. Application examples for tin-plates, hot dip galvanized zinc-plates and 'fingerprint-resistant' plates were given. FPMULTI is used to predict the relationship between intensities of different X-ray lines and the thickness first and then to analyze those samples. When using only few calibration standards, the results from FPMULTI are much better than those from linear regression method, and this reflects the advantages of the fundamental parameter approach.
Collapse
Affiliation(s)
- G Tao
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050 Shanghai
| | | | | |
Collapse
|
48
|
Xie H, Huang S, Deng H, Wu Z, Ji A. [Study on chemical components of Momordica charantia]. Zhong Yao Cai 1998; 21:458-9. [PMID: 12569838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
The paper deals with the study of chemical constituents of the unmatured fruits of Chinese traditional medicine Momordica charantia L. which is usually used as green-stuff. There are two parts of the extracts obtained by ethanol precipitation, and four compounds obtained from the further isolation. They are identified as Vincine, Mycose, Momordicoside A and Momordicoside B.
Collapse
Affiliation(s)
- H Xie
- Shenzhen Women and Children's Hospital, Shenzhen 518028
| | | | | | | | | |
Collapse
|
49
|
Zhang X, Ji A, Lee C. THE EFFECTS OF BUPIVACAINE AND ROPIVACAINE ON CARDIOMYOCYTE CONTRACTILITY AND EXCITABILITY IN RATS. Anesthesiology 1998. [DOI: 10.1097/00000542-199809150-00006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
50
|
Ji A, Lin H, Wang J. [Clinical evaluation for wear of composite resin in filling of molars]. Zhonghua Kou Qiang Yi Xue Za Zhi 1997; 32:335-7. [PMID: 11189303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
To study the best evaluation method for wear of composite resins, 93 occlusal cavities of molars were restored with four kinds of light-cured composite resins, and three-year clinical research of wear analyses was performed using either direct evaluation method (USPHS) or indirect cast comparison (Leinfelder) method. The results suggested that the direct evaluation method for early wear of restorations would be less sensitive, but it remains the preferred system for the evaluation otherwise; the indirect method would be more reliable and sensitive, and numerical estimates of wear are more readily suitable for statistical analysis. The combination of direct and indirect methods will evaluate composite resin wear objectively and comprehensively.
Collapse
Affiliation(s)
- A Ji
- School of Stomatology, Beijing Medical University, Beijing 100081
| | | | | |
Collapse
|