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Xu X, Qiu H. BRD4 promotes gouty arthritis through MDM2-mediated PPARγ degradation and pyroptosis. Mol Med 2024; 30:67. [PMID: 38773379 DOI: 10.1186/s10020-024-00831-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 05/08/2024] [Indexed: 05/23/2024] Open
Abstract
BACKGROUND Gouty arthritis (GA) is characterized by monosodium urate (MSU) crystal accumulation that instigates NLRP3-mediated pyroptosis; however, the underlying regulatory mechanisms have yet to be fully elucidated. The present research endeavors to elucidate the regulatory mechanisms underpinning this MSU-induced pyroptotic cascade in GA. METHODS J774 cells were exposed to lipopolysaccharide and MSU crystals to establish in vitro GA models, whereas C57BL/6 J male mice received MSU crystal injections to mimic in vivo GA conditions. Gene and protein expression levels were evaluated using real-time quantitative PCR, Western blotting, and immunohistochemical assays. Inflammatory markers were quantified via enzyme-linked immunosorbent assays. Pyroptosis was evaluated using immunofluorescence staining for caspase-1 and flow cytometry with caspase-1/propidium iodide staining. The interaction between MDM2 and PPARγ was analyzed through co-immunoprecipitation assays, whereas the interaction between BRD4 and the MDM2 promoter was examined using chromatin immunoprecipitation and dual-luciferase reporter assays. Mouse joint tissues were histopathologically evaluated using hematoxylin and eosin staining. RESULTS In GA, PPARγ was downregulated, whereas its overexpression mitigated NLRP3 inflammasome activation and pyroptosis. MDM2, which was upregulated in GA, destabilized PPARγ through the ubiquitin-proteasome degradation pathway, whereas its silencing attenuated NLRP3 activation by elevating PPARγ levels. Concurrently, BRD4 was elevated in GA and exacerbated NLRP3 activation and pyroptosis by transcriptionally upregulating MDM2, thereby promoting PPARγ degradation. In vivo experiments showed that BRD4 silencing ameliorated GA through this MDM2-PPARγ-pyroptosis axis. CONCLUSION BRD4 promotes inflammation and pyroptosis in GA through MDM2-mediated PPARγ degradation, underscoring the therapeutic potential of targeting this pathway in GA management.
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Affiliation(s)
- Xiaoxia Xu
- Key Laboratory of Microecology-Immune Regulatory Network and Related Diseases, School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang Province, 154000, People's Republic of China
| | - Hongbin Qiu
- Key Laboratory of Microecology-Immune Regulatory Network and Related Diseases, School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang Province, 154000, People's Republic of China.
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Alabarse PG, Oliveira P, Qin H, Yan T, Migaud M, Terkeltaub R, Liu-Bryan R. The NADase CD38 is a central regulator in gouty inflammation and a novel druggable therapeutic target. Inflamm Res 2024; 73:739-751. [PMID: 38493256 PMCID: PMC11058052 DOI: 10.1007/s00011-024-01863-y] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 01/23/2024] [Accepted: 02/13/2024] [Indexed: 03/18/2024] Open
Abstract
OBJECTIVES Cellular NAD+ declines in inflammatory states associated with increased activity of the leukocyte-expressed NADase CD38. In this study, we tested the potential role of therapeutically targeting CD38 and NAD+ in gout. METHODS We studied cultured mouse wild type and CD38 knockout (KO) murine bone marrow derived macrophages (BMDMs) stimulated by monosodium urate (MSU) crystals and used the air pouch gouty inflammation model. RESULTS MSU crystals induced CD38 in BMDMs in vitro, associated with NAD+ depletion, and IL-1β and CXCL1 release, effects reversed by pharmacologic CD38 inhibitors (apigenin, 78c). Mouse air pouch inflammatory responses to MSU crystals were blunted by CD38 KO and apigenin. Pharmacologic CD38 inhibition suppressed MSU crystal-induced NLRP3 inflammasome activation and increased anti-inflammatory SIRT3-SOD2 activity in macrophages. BMDM RNA-seq analysis of differentially expressed genes (DEGs) revealed CD38 to control multiple MSU crystal-modulated inflammation pathways. Top DEGs included the circadian rhythm modulator GRP176, and the metalloreductase STEAP4 that mediates iron homeostasis, and promotes oxidative stress and NF-κB activation when it is overexpressed. CONCLUSIONS CD38 and NAD+ depletion are druggable targets controlling the MSU crystal- induced inflammation program. Targeting CD38 and NAD+ are potentially novel selective molecular approaches to limit gouty arthritis.
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Affiliation(s)
- Paulo Gil Alabarse
- VA San Diego Healthcare System, 111K, 3350 La Jolla Village Drive, San Diego, CA, 92161, USA
| | - Patricia Oliveira
- University of California San Diego, La Jolla, San Diego, CA, USA
- The Janssen Pharmaceutical Companies of Johnson & Johnson, La Jolla, San Diego, CA, USA
| | - Huaping Qin
- University of California San Diego, La Jolla, San Diego, CA, USA
| | - Tiffany Yan
- University of California San Diego, La Jolla, San Diego, CA, USA
- Gritstone Bio, Emeryville, CA, USA
| | - Marie Migaud
- Department of Pharmacology, F. Whiddon College of Medicine, Mitchell Cancer Institute, University of South Alabama, Mobile, AL, 36604, USA
| | - Robert Terkeltaub
- VA San Diego Healthcare System, 111K, 3350 La Jolla Village Drive, San Diego, CA, 92161, USA
- University of California San Diego, La Jolla, San Diego, CA, USA
| | - Ru Liu-Bryan
- VA San Diego Healthcare System, 111K, 3350 La Jolla Village Drive, San Diego, CA, 92161, USA.
- University of California San Diego, La Jolla, San Diego, CA, USA.
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Liu L, He S, Jia L, Yao H, Zhou D, Guo X, Miao L. Correlation analysis of serum TLR4 protein levels and TLR4 gene polymorphisms in gouty arthritis patients. PLoS One 2024; 19:e0300582. [PMID: 38652726 PMCID: PMC11037531 DOI: 10.1371/journal.pone.0300582] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/29/2024] [Indexed: 04/25/2024] Open
Abstract
OBJECTIVE The Toll-like receptor (TLR) 4-mediated nuclear factor kappa B (NF-κB) signaling pathway regulates the production of inflammatory factors and plays a key role in the pathogenesis of gouty arthritis. The aim of the present study was to investigate the link among TLR4 gene polymorphisms at various loci, protein expression, and gouty arthritis susceptibility. METHODS Between 2016 and 2021, a case-control study was used to collect a total of 1207 study subjects, including 317 male patients with gouty arthritis (gout group) and 890 healthy males (control group). The association between gout susceptibility and different genetic models was analyzed by typing three loci of the TLR4 gene (rs2149356, rs2737191, and rs10759932) using a multiplex point mutation rapid assay, and the association between protein expression and gout was confirmed by measuring TLR4 protein concentrations using enzyme-linked immunosorbent assays (ELISAs). RESULTS In a codominant models AA and AG, the rs2737191 polymorphism in the gout group increased the risk of gout compared to the AA genotype (OR = 2.249, 95%CI 1.010~5.008), and the risk of gout was higher for those carrying the G allele compared to the A allele (OR = 2.227, 95%CI 1.006~4.932). TLR4 protein expression was different between the two groups with different locus genotypes. The differences in TLR4 protein expression between the gout group and control group were statistically significant between the following genotypes: the GG and GT genotypes of the rs2149356 polymorphism; the AA and AG genotypes of the rs2737191 polymorphism; and the TT and TC genotypes of the rs10759932 polymorphism(P<0.05). The TLR4 protein level in the gout group (19.19±3.09 ng/ml) was significantly higher than that in the control group (15.85±4.75 ng/ml). CONCLUSION The AG genotype of the TLR4 gene rs2737191 polymorphism may be correlated with the development of gouty arthritis. The level of TLR4 protein expression is significantly higher in patients with gouty arthritis than in controls, and there is a correlation between high TLR4 protein expression and the development of gouty arthritis.
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Affiliation(s)
- Lu Liu
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
- School of Public Health, Xinjiang Medical University, Xinjiang, China
| | - Shuang He
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou, China
| | - Lin Jia
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Hua Yao
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Dan Zhou
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Xiaobin Guo
- The First Affiliated Hospital of Xinjiang Medical University, Xinjiang, China
| | - Lei Miao
- School of Public Health, Xinjiang Medical University, Xinjiang, China
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Wang X, Yang B, Xiong T, Qiu Y, Qin Y, Liang X, Lu D, Yang X. Identification of potential biomarkers of gout through weighted gene correlation network analysis. Front Immunol 2024; 15:1367019. [PMID: 38686389 PMCID: PMC11056514 DOI: 10.3389/fimmu.2024.1367019] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/28/2024] [Indexed: 05/02/2024] Open
Abstract
Background Although hyperuricemia is not always associated with acute gouty arthritis, uric acid is a significant risk factor for gout. Therefore, we investigated the specific mechanism of uric acid activity. Methods Using the gout-associated transcriptome dataset GSE160170, we conducted differential expression analysis to identify differentially expressed genes (DEGs). Moreover, we discovered highly linked gene modules using weighted gene coexpression network analysis (WGCNA) and evaluated their intersection. Subsequently, we screened for relevant biomarkers using the cytoHubba and Mcode algorithms in the STRING database, investigated their connection to immune cells and constructed a competitive endogenous RNA (ceRNA) network to identify upstream miRNAs and lncRNAs. We also collected PBMCs from acute gouty arthritis patients and healthy individuals and constructed a THP-1 cell gout inflammatory model, RT-qPCR and western blotting (WB) were used to detect the expression of C-X-C motif ligand 8 (CXCL8), C-X-C motif ligand 2 (CXCL2), and C-X-C motif ligand 1 (CXCL1). Finally, we predicted relevant drug targets through hub genes, hoping to find better treatments. Results According to differential expression analysis, there were 76 upregulated and 28 downregulated mRNAs in GSE160170. Additionally, WGCNA showed that the turquoise module was most strongly correlated with primary gout; 86 hub genes were eventually obtained upon intersection. IL1β, IL6, CXCL8, CXCL1, and CXCL2 are the principal hub genes of the protein-protein interaction (PPI) network. Using RT-qPCR and WB, we found that there were significant differences in the expression levels of CXCL8, CXCL1, and CXCL2 between the gouty group and the healthy group, and we also predicted 10 chemicals related to these proteins. Conclusion In this study, we screened and validated essential genes using a variety of bioinformatics tools to generate novel ideas for the diagnosis and treatment of gout.
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Affiliation(s)
- Xinyi Wang
- Department of Endocrinology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Bing Yang
- Department of Geriatric Endocrinology and Metabolism, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Tian Xiong
- Department of Geriatric Endocrinology and Metabolism, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Yu Qiu
- Department of Geriatric Endocrinology and Metabolism, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Yingfen Qin
- Department of Endocrinology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Xinghuan Liang
- Department of Endocrinology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Decheng Lu
- Department of Endocrinology, Wuming Hospital, Guangxi Medical University, Nanning, China
| | - Xi Yang
- Department of Geriatric Endocrinology and Metabolism, First Affiliated Hospital, Guangxi Medical University, Nanning, China
- Guangxi Key Laboratory of Precision Medicine in Cardio-cerebrovascular Diseases Control and Prevention, Nanning, China
- Guangxi Clinical Research Center for Cardio-cerebrovascular Diseases, Nanning, China
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Hou N, Ma X, Zhou W, Yuan M, Xu L, Sun H, Liu Y, Liu L, Shi Y, Li C, Fu Y. [miR-185-5p alleviates the inflammatory response of acute gouty arthritis by inhibiting of IL-1β]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2024; 40:51-57. [PMID: 38246177] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Objective To investigate the relationship between interleukin-1β (IL-1β) and miR-185-5p in the process of joint injury in acute gouty arthritis (AGA). Methods The serum miR-185-5p levels of 89 AGA patients and 91 healthy volunteers were detected by real-time quantitative PCR. The correlation between miR-185-5p expression level and VAS score or IL-1β expression level was evaluated by Pearson correlation coefficient method. Receiver operating characteristic (ROC) curve was used to evaluate the diagnostic value of miR-185-5p in AGA. THP-1 cells were induced by sodium urate (MSU) to construct an in vitro acute gouty inflammatory cell model. After the expression level of miR-185-5p in THP-1 cells was upregulated or downregulated by transfection of miR-185-5p mimics or inhibitors in vitro, inflammatory cytokines of THP-1 cells, such as IL-1β, IL-8 and tumor necrosis factor α (TNF-α), were detected by ELISA. The luciferase reporter gene assay was used to determine the interaction between miR-185-5p and the 3'-UTR of IL-1β. Results Compared with the healthy control group, the expression level of serum miR-185-5p in AGA patients was significantly reduced. The level of serum miR-185-5p was negatively correlated with VAS score and IL-1β expression level. The area under the curve (AUC) was 0.905, the sensitivity was 80.17% and the specificity was 83.52%. Down-regulation of miR-185-5p significantly promoted the expression of IL-1β, IL-8 and tumor necrosis factor (TNF-α), while overexpression of miR-185-5p showed the opposite results. Luciferase reporter gene assay showed that IL-1β was the target gene of miR-185-5p, and miR-185-5p negatively regulated the expression of IL-1β. Conclusion miR-185-5p alleviates the inflammatory response in AGA by inhibiting IL-1β.
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Affiliation(s)
- Nan Hou
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Xianghui Ma
- Department of Rheumatology and Immunology, Dongying People's Hospital, Dongying 257091, China
| | - Wei Zhou
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Min Yuan
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Liming Xu
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Huanxia Sun
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Yifan Liu
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Lining Liu
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Yanjun Shi
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Chunxian Li
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China
| | - Yanfa Fu
- Department of Rheumatology and Immunology, Liaocheng People's Hospital, Liaocheng 252000, China. *Corresponding author, E-mail:
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Yang L, Liu X, Yan S, Xiong S, Bai X, Yan Y. Highly expressed long non-coding RNA SNHG14 activated MSU-induced inflammatory response in acute gout arthritis through targeting miR-223-3p. Int J Rheum Dis 2023; 26:2233-2239. [PMID: 37715329 DOI: 10.1111/1756-185x.14919] [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: 05/31/2022] [Revised: 08/22/2023] [Accepted: 09/03/2023] [Indexed: 09/17/2023]
Abstract
AIM According to reports, long non-coding RNAs (lncRNAs) are involved in the regulation of many inflammatory diseases. Here, our main purpose was to ascertain the expression data of lncRNA SNHG14 in acute gouty arthritis (AGA) and to explore its possible mechanism in the regulation of AGA. METHOD Reverse transcription quantitative polymerase chain reaction technology was supplied to detect the lncRNA SNHG14 expression. A receiver operating characteristics curve was drawn to estimate the accuracy of lncRNA SNHG14 in AGA diagnosis. An in vitro AGA cell model was constructed by inducing THP-1 cells with monosodium urate (MSU). The concentrations of inflammatory factors such as interleukin-1β, interleukin-6, and tumor necrosis factor-α were measured by enzyme-linked immunosorbent assay. The luciferase reporter gene was used to verify the relationship between lncRNA SNHG14 and miR-223-3p. RESULTS In clinical analysis, the levels of serum lncRNA SNHG14 in AGA patients were significantly higher than those in the control group. Abnormally elevated lncRNA SNHG14 has high sensitivity and specificity for AGA diagnosis. In in vitro cell experiments, silencing lncRNA SNHG14 inhibited the inflammatory response of THP-1 cells stimulated by MSU, and the luciferase reporter gene proved that lncRNA SNHG14 could bind to miR-223-3p. In addition, the level of miR-223-3p declined in AGA patients and the AGA cell model. Overexpression of miR-223-3p is helpful to alleviate an MSU-induced inflammatory response. CONCLUSION In the AGA cell model, lncRNA SNHG14, as an miR-223-3p sponge, induces a cellular inflammatory response by controlling the level of miR-223-3p, so aggravating the disease progress of AGA.
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Affiliation(s)
- Lu Yang
- Clinical Research Center, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Xiaochuan Liu
- Clinical Research Center, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Shuyi Yan
- Clinical Research Center, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Shili Xiong
- Clinical Research Center, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Xiaosong Bai
- Department of Clinical Laboratory, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Ying Yan
- Shanghai Baoshan Center for Disease Control and Prevention, Shanghai, China
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7
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Liu YR, Wang JQ, Li J. Role of NLRP3 in the pathogenesis and treatment of gout arthritis. Front Immunol 2023; 14:1137822. [PMID: 37051231 PMCID: PMC10083392 DOI: 10.3389/fimmu.2023.1137822] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
Gout arthritis (GA) is a common and curable type of inflammatory arthritis that has been attributed to a combination of genetic, environmental and metabolic factors. Chronic deposition of monosodium urate (MSU) crystals in articular and periarticular spaces as well as subsequent activation of innate immune system in the condition of persistent hyperuricemia are the core mechanisms of GA. As is well known, drugs for GA therapy primarily consists of rapidly acting anti-inflammatory agents and life-long uric acid lowering agents, and their therapeutic outcomes are far from satisfactory. Although MSU crystals in articular cartilage detected by arthrosonography or in synovial fluid found by polarization microscopy are conclusive proofs for GA, the exact molecular mechanism of NLRP3 inflammasome activation in the course of GA still remains mysterious, severely restricting the early diagnosis and therapy of GA. On the one hand, the activation of Nod-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome requires nuclear factor kappa B (NF-κB)-dependent transcriptional enhancement of NLRP3, precursor (pro)-caspase-1 and pro-IL-1β, as well as the assembly of NLRP3 inflammasome complex and sustained release of inflammatory mediators and cytokines such as IL-1β, IL-18 and caspase-1. On the other hand, NLRP3 inflammasome activated by MSU crystals is particularly relevant to the initiation and progression of GA, and thus may represent a prospective diagnostic biomarker and therapeutic target. As a result, pharmacological inhibition of the assembly and activation of NLRP3 inflammasome may also be a promising avenue for GA therapy. Herein, we first introduced the functional role of NLRP3 inflammasome activation and relevant biological mechanisms in GA based on currently available evidence. Then, we systematically reviewed therapeutic strategies for targeting NLRP3 by potentially effective agents such as natural products, novel compounds and noncoding RNAs (ncRNAs) in the treatment of MSU-induced GA mouse models. In conclusion, our present review may have significant implications for the pathogenesis, diagnosis and therapy of GA.
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Affiliation(s)
- Ya-ru Liu
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- The Grade 3 Pharmaceutical Chemistry Laboratory, State Administration of Traditional Chinese Medicine, Hefei, China
- *Correspondence: Ya-ru Liu, ; Jun Li,
| | - Jie-quan Wang
- Department of Pharmacy, Affiliated Psychological Hospital of Anhui Medical University, Hefei, China
- Department of Pharmacy, Hefei Fourth People’s Hospital, Hefei, China
- Psychopharmacology Research Laboratory, Anhui Mental Health Center, Hefei, China
| | - Jun Li
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, China
- *Correspondence: Ya-ru Liu, ; Jun Li,
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8
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Abstract
Gouty arthritis (GA) is mainly caused by the precipitation of monosodium urate (MSU) crystals in the joint. Recently, different regulatory roles of microRNAs (miRNAs) in arthritis have been widely verified. Nevertheless, the specific function of microRNA-486-5p (miR-486-5p) in GA is still unclear. GA cell models in vitro were established by the treatment of 250 μg/mL MSU crystals into THP-1 cells or J774A.1 cells. Then, the accumulation of tumor necrosis factor (TNF)-α, interleukin (IL)-8, and IL-β was estimated by ELISA. The mRNA levels of TNF-α, IL-8, and IL-β were measured through RT-qPCR. The protein level of forkhead box protein O1 (FOXO1) was tested via western blot. Furthermore, the interplay of miR-486-5p and FOXO1 was evaluated via the luciferase reporter assay. In this study, MSU treatment successfully stimulated the inflammatory response in macrophage cells. MiR-486-5p downregulation was observed in THP-1 and J774A.1 cells treated with MSU, and its upregulation markedly decreased the concentration and mRNA levels of TNF-α, IL-8, and IL-β. Furthermore, FOXO1 was demonstrated to be negatively modulated by miR-486-5p. The rescue assay indicated that overexpressing FOXO1 reversed the effects of overexpressing miR-486-5p on inflammatory cytokines. Overall, this study proves that miR-486-5p inhibits GA inflammatory response via modulating FOXO1.
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Affiliation(s)
- Jianguo Hu
- Department of Rheumatology and Immunology, Xinyu People's Hospital, Xinyu, Jiangxi, China
| | - Cheng Jin
- Department of Orthopedics, Zhoushan Hospital of Zhejiang Province, Zhoushan, Zhejiang, China
| | - Li Fang
- Department of Rheumatology and Immunology, Zhoushan Hospital of Zhejiang Province, Zhoushan, Zhejiang, China
| | - Yao Lu
- Department of Rheumatology and Immunology, Zhoushan Hospital of Zhejiang Province, Zhoushan, Zhejiang, China
| | - Yanying Wu
- Department of Rheumatology and Immunology, Zhoushan Hospital of Zhejiang Province, Zhoushan, Zhejiang, China
| | - Xiangfeng Xu
- Department of Rheumatology and Immunology, Zhoushan Hospital of Zhejiang Province, Zhoushan, Zhejiang, China
| | - Simei Sun
- Department of Rheumatology and Immunology, Zhoushan Hospital of Zhejiang Province, Zhoushan, Zhejiang, China
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9
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Abstract
Erianin (Eri) is the extract of Dendrobium chrysotoxum Lindl. The NLRP3 inflammasome is a multiprotein complex that plays key roles in a wide variety of chronic inflammation-driven human diseases. Nevertheless, little is known about the protection of Eri against NLRP3 inflammasome-related diseases. In this study, we demonstrated that Eri inhibited NLRP3 inflammasome activation in vitro and in vivo. Mechanistically, Eri directly interacted with NLRP3, leading to inhibition of NLRP3 inflammasome assembly. Eri associated with the Walker A motif in the NACHT domain and suppressed NLRP3 ATPase activity. In mouse models, Eri had therapeutic effects on peritonitis, gouty arthritis and type 2 diabetes, via NLRP3. More importantly, Eri was active ex vivo for synovial fluid cells and monocytes from patients with IAV infection and gout. Eri may serve as a potential novel therapeutic compound against NLRP3-driven diseases.
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MESH Headings
- Animals
- Anti-Inflammatory Agents/pharmacology
- Arthritis, Gouty/drug therapy
- Arthritis, Gouty/genetics
- Arthritis, Gouty/metabolism
- Bibenzyls/pharmacology
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Disease Models, Animal
- Dogs
- HEK293 Cells
- Humans
- Inflammasomes/antagonists & inhibitors
- Inflammasomes/genetics
- Inflammasomes/metabolism
- Madin Darby Canine Kidney Cells
- Mice, Inbred C57BL
- Mice, Knockout
- NLR Family, Pyrin Domain-Containing 3 Protein/antagonists & inhibitors
- NLR Family, Pyrin Domain-Containing 3 Protein/genetics
- NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
- Peritonitis/drug therapy
- Peritonitis/genetics
- Peritonitis/metabolism
- Phenol/pharmacology
- Protein Interaction Domains and Motifs
- THP-1 Cells
- Mice
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Affiliation(s)
- Xinyong Zhang
- Department of Neurology, Huaian Hospital Affiliated to Xuzhou Medical University, Huaian, China
- The Key Laboratory of Targeted Intervention of Clinical Disease, Collaborative Innovation Center of Translational Medicine for Clinical Disease, Nanjing Medical University, Nanjing, China
| | - Lei Hu
- Guiyang Women and Children’s Hospital, Guizhou Medical University, Guiyang, China
| | - Shilei Xu
- Department of General Surgery, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Chao Ye
- The Key Laboratory of Targeted Intervention of Clinical Disease, Collaborative Innovation Center of Translational Medicine for Clinical Disease, Nanjing Medical University, Nanjing, China
| | - Aidong Chen
- The Key Laboratory of Targeted Intervention of Clinical Disease, Collaborative Innovation Center of Translational Medicine for Clinical Disease, Nanjing Medical University, Nanjing, China
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10
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Xiao WZ, Zhao L, Cao L, Zhu XX, Zou HJ. Melatonin Alleviates Acute Gouty Inflammation In Vivo and In Vitro. Curr Med Sci 2021; 41:757-763. [PMID: 34047943 DOI: 10.1007/s11596-021-2362-x] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 02/02/2021] [Indexed: 12/17/2022]
Abstract
The aim of this study was to identify the effects of melatonin on acute gouty inflammation and to investigate the underlying mechanisms. We found significantly lower serum melatonin levels in gout patients in the acute phase than in those in the remission phase or in normal individuals. The mRNA expression of melatonin receptor 2 (MT2) was also lower in gout patients than in normal individuals. To verify the in-vivo role of melatonin, a gouty arthritis model was established by intraarticular injection of monosodium urate (MSU, 1 mg) crystals into the paws of C57BL/6 mice. Joint inflammation in the mouse model was evaluated by measuring the thickness of the right paw/left paw, and the inflammation index was determined by examining infiltrating neutrophils with haematoxylin and eosin (H&E) staining. Melatonin was found to reduce both paw thickness and the inflammation index in the mouse model, and melatonin also reduced the mRNA levels of interleukin-1 beta (IL-1β), IL-6 and NLR family pyrin domain containing 3 (NLRP3) inflammasome. To mimic gouty inflammation in vitro, mouse peritoneal macrophages were stimulated with lipopolysaccharides (LPS) plus MSU. Melatonin was revealed to reduce IL-1β secretion by stimulated macrophages. The mRNA expression levels of IL-1β and IL-6 were also inhibited by melatonin. Western blot analysis showed that the expression of NLRP3, caspase-1 and pro-IL-1β was also inhibited by melatonin. In conclusion, our study demonstrated that melatonin alleviated gouty inflammation in vivo and in vitro, and the underlying mechanism may involve inhibiting the assembly of the NLRP3 inflammasome.
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Affiliation(s)
- Wen-Ze Xiao
- Department of Rheumatology and Immunology, Huashan Hospital Affiliated to Fudan University, Shanghai, 200040, China
- Department of Rheumatology and Immunology, Fudan University Pudong Medical Center, Shanghai, 201300, China
| | - Li Zhao
- Department of Rheumatology and Immunology, Huashan Hospital Affiliated to Fudan University, Shanghai, 200040, China
| | - Lin Cao
- Department of Rheumatology and Immunology, Huashan Hospital Affiliated to Fudan University, Shanghai, 200040, China
| | - Xiao-Xia Zhu
- Department of Rheumatology and Immunology, Huashan Hospital Affiliated to Fudan University, Shanghai, 200040, China
| | - He-Jian Zou
- Department of Rheumatology and Immunology, Huashan Hospital Affiliated to Fudan University, Shanghai, 200040, China.
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11
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Qiao TX, Tang CL, Qiu L, Zhao DD, Wu MJ, An HY, Ma X, Wan XF. [Cathepsin-B involved in effect of electroacupuncture by inhibiting the activation of NLRP3 inflammasome in rats with acute gouty arthritis]. Zhen Ci Yan Jiu 2021; 46:295-300. [PMID: 33931994 DOI: 10.13702/j.1000-0607.200240] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To observe the effect of electroacupuncture (EA) on Cathepsin-B in the synovium of the knee joint of acute gouty arthritis(AGA) rats, so as to explore the mechanism of EA in the treatment of AGA. METHODS A total of 60 male Wistar rats were randomly divided into normal control,model, medication and EA groups, with 15 rats in each group. Rat model of AGA was established by injection of 0.2 mL sodium urate crystal suspension into the left knee joint cavity. The rats in the medication group were treated with colchicine by gavage(0.3 mg·kg-1·d-1), and the rats in the EA group were treated with EA at the left "Sanyinjiao" (SP6) and "Zusanli"(ST36) for 10 min each time, once a day for a week. The Coderre gait grading standard was used to score the gait of rats. The pathological morphology of synovial tissue of the left knee joint was observed by H.E. staining. The expression levels of Cathepsin-B protein and Nod-like receptor pyrin domain 3(NLRP3), apoptosis-associated speck-like protein containing CARD (ASC),Caspase-1, interleukin-1β(IL-1β) and IL-18 mRNAs were detected by Western blot and real-time fluorescence quantitative PCR, respectively. RESULTS Compared with the normal control group, the degree of synovitis infiltration in the model group was more serious. And the gait score,the protein expression level of Cathepsin-B and the mRNA expression levels of NLRP3,ASC,Caspase-1, IL-1β,IL-18 were significantly increased (P<0.01).After the interventions, the degree of inflammatory infiltration was mild, The gait score, the protein expression level of Cathepsin-B and the mRNA expression levels of NLRP3 and ASC,Caspase-1,IL-1β,IL-18 were significantly decreased in both medication and EA groups in contrast to the model group (P<0.01, P<0.05). Compared with medication group, the mRNA expression levels of Caspase-1 and IL-18 in the EA group were increased (P<0.05). CONCLUSION EA may inhibit the activation of NLRP3 inflammasome by reducing the activity of Cathepsin-B in the synovium of the knee joint, so as to treat AGA.
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Affiliation(s)
- Tong-Xi Qiao
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
| | - Cheng-Lin Tang
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
| | - Li Qiu
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
| | - Dan-Dan Zhao
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
| | - Meng-Jia Wu
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
| | - Hui-Yu An
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
| | - Xiang Ma
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
| | - Xiao-Feng Wan
- College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016,China
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Du X, Zhao L, Yang Y, Zhang Z, Hu J, Ren H, Chen Z, Li Y. Investigation of the mechanism of action of Porana sinensis Hemsl. against gout arthritis using network pharmacology and experimental validation. J Ethnopharmacol 2020; 252:112606. [PMID: 31988013 DOI: 10.1016/j.jep.2020.112606] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/20/2020] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Porana sinensis Hemsl. has been widely used to treat joint pain and rheumatoid arthritis in traditional Chinese medicine (TCM). Although evidence exists to support a pharmacological action of P. sinensis for the treatment of gout arthritis (GA), the underlying mechanism of action remains unknown due to it being a multi-component and multi-target agent. AIM OF THE STUDY To clarify the active compounds and mechanism of P. sinensis against GA. MATERIALS AND METHODS The present study combined network pharmacology with experiments to clarify the mechanism of P. sinensis against GA. A protein-protein interaction network for gout was constructed to identify the potential drug targets, and molecular docking was subsequently performed to determine whether the protein was a target for the compounds of P. sinensis. KEGG pathway analysis was then conducted to elucidate the pathway involved in the P. sinensis-mediated treatment of gout. A rat model of GA was used to further investigate the mechanism of P. sinensis against GA. RESULTS The network pharmacology study indicates that coumarins and chlorogenic acids of P. sinensis may serve as additives to GA treatment. P. sinensis played a role in the treatment of GA by regulating the PI3K-Akt, MAPK, NF-kappa B and toll-like receptor pathways and so on. Moreover, experimental validation suggests that P. sinensis extract significantly suppressed the expression of TLR2 and MyD88 mRNA, regulating the release of cytokines (IL-1β, IL-4 and TGF-β), lowering lipid peroxidation (MDA) and increasing antioxidant status (SOD). CONCLUSION The present study clarifies the mechanism of P. sinensis against GA, and provides evidence to support its clinical use.
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Affiliation(s)
- Xia Du
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, 710003, China
| | - Lintao Zhao
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, 710003, China
| | - Yuanyuan Yang
- Xi'an Institute for Food and Drug Control, Xi'an, Shaanxi, 710054, China
| | - Zijia Zhang
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201210, China
| | - Jing Hu
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, 710003, China
| | - Hui Ren
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, 710003, China
| | - Zhiyong Chen
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, 710003, China.
| | - Ye Li
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi, 710003, China.
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Gupta A, Elfiky A. Novel findings from determination of common expressed plasma exosomal microRNAs in patients with psoriatic arthritis, psoriasis vulgaris, rheumatoid arthritis, and gouty arthritis. Discov Med 2019; 28:113-122. [PMID: 31926583] [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: 06/10/2023]
Abstract
Adrenocortical carcinoma (ACC) is a rare but aggressive malignancy. Localized tumors can be treated successfully with surgical excision, but the presence of micrometastases, recurrence, and advanced disease are associated with high mortality rates, despite the use of chemotherapy with etoposide, doxorubicin, cisplatin (EDP), and mitotane. During the past decade, the characterization of ACC using genomic profiling and next-generation sequencing (NGS) has resulted in the proposed new targeted therapies for patients with advanced ACC. In 2018, the European Society of Endocrinology in collaboration with the European Network for the Study of Adrenal Tumors (ENSAT) published clinical practice guidelines for the management of ACC. However, the authors of these new guidelines concluded that the evidence to support clinical management recommendations remains weak, as there remains a requirement for large-scale controlled clinical trials to support new targeted therapies. This review discusses the recent developments in the diagnosis, staging, and management of ACC, and the molecular changes that may be the basis for future personalized or targeted therapy, if supported by data from clinical trials.
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MESH Headings
- Adult
- Arthritis, Gouty/diagnosis
- Arthritis, Gouty/genetics
- Arthritis, Gouty/immunology
- Arthritis, Psoriatic/diagnosis
- Arthritis, Psoriatic/genetics
- Arthritis, Psoriatic/immunology
- Arthritis, Rheumatoid/diagnosis
- Arthritis, Rheumatoid/genetics
- Arthritis, Rheumatoid/immunology
- Biomarkers/blood
- Circulating MicroRNA/blood
- Circulating MicroRNA/immunology
- Circulating MicroRNA/metabolism
- Diagnosis, Differential
- Exosomes/genetics
- Female
- Gene Regulatory Networks/immunology
- Humans
- Male
- Middle Aged
- RNA-Seq
- Young Adult
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Affiliation(s)
- Ashish Gupta
- Department of Medicine, The Brooklyn Hospital Center-Mount Sinai Health System, Brooklyn, NY 11201, USA
| | - Aymen Elfiky
- Department of Medicine, The Brooklyn Hospital Center-Mount Sinai Health System, Brooklyn, NY 11201, USA
- Division of Oncology and Hematology, The Brooklyn Hospital Center-Mount Sinai Health System, Brooklyn, NY 11201, USA
- Corresponding author
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Chen XM, Zhao Y, Wu XD, Wang MJ, Yu H, Lu JJ, Hu YJ, Huang QC, Huang RY, Lu CJ. Novel findings from determination of common expressed plasma exosomal microRNAs in patients with psoriatic arthritis, psoriasis vulgaris, rheumatoid arthritis, and gouty arthritis. Discov Med 2019; 28:47-68. [PMID: 31465725] [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: 06/10/2023]
Abstract
BACKGROUND Circulating exosomal microRNAs modulate not only cancer cell metabolism but also the immune response, and therefore plasma exosomal microRNAs might have the potential to be the biomarkers for a number of immune disorders. OBJECTIVE This study was conducted to identify the common mechanisms among psoriatic arthritis (PsA), psoriasis vulgaris (PV), rheumatoid arthritis (RA), and gouty arthritis (GA). The common expressed plasma exosomal microRNAs in these diseases were determined. METHODS The expression of microRNAs derived from plasma exosome of patients with PsA (n=30), PV (n=15), RA (n=15), GA (n=15), and healthy controls (n=15) was evaluated via sequencing. Function analysis of common expressed microRNAs was conducted by the Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analyses. Coexpression analysis was conducted to identify novel and significant genes and proteins by using the Search Tool for the Retrieval of Interacting Genes (STRING). A systematic literature review was conducted to uncover the role of the common microRNAs in the pathogenesis of PsA, PV, RA, and GA. RESULTS A total of 36 common expressed microRNAs were detected in patients with PsA, PV, RA, and GA. The most significantly enriched biological processes, cellular components, and molecular functions were "homophilic cell adhesion via plasma membrane adhesion molecules," "CCR4-NOT complex," and "calcium ion binding," respectively. "Antigen processing and presentation" was the most significantly enriched pathway. A total of 91 validated coexpressed gene pairs were identified and 16 common expressed microRNAs and 85 potential target genes were screened based on Cytoscape. Of 36 common expressed microRNAs, 5 microRNAs, including hsa-miR-151a-3p, hsa-miR-199a-5p, hsa-miR-370-3p, hsa-miR-589-5p, and hsa-miR-769-5p, were considered to be connected with the common pathogenesis of PsA, PV, RA, and GA. Systemic review revealed that the roles of these 5 microRNAs are related to immune disorder and bone injury, which matches the conclusion from GO and KEGG analyses. CONCLUSION (1) Both immune disorder and bone metabolic dysregulation could be the shared mechanism in the development of PsA, PV, RA, and GA. (2) Immune dysfunction is involved in GA. Our study may shed new light on the diagnosis and treatment strategy of these autoimmune diseases and GA, which warrants further studies.
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Affiliation(s)
- Xiu-Min Chen
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong 510120, China
- Guangdong Provincial Key laboratory of Chinese Medicine for Prevention and Treatment of Refractory Chronic Diseases, Guangzhou, Guangdong 510120, China
| | - Yue Zhao
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong 510120, China
| | - Xiao-Dong Wu
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong 510120, China
| | - Mao-Jie Wang
- Division of Nephrology, Huashan Hospital, Fudan University, Shanghai 200040, China.The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong 510120, China
- University Medical Center Utrecht, Utrecht, the Netherlands
| | - Hua Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Yuan-Jia Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, China
| | - Qing-Chun Huang
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong 510120, China
- Guangdong Provincial Key laboratory of Chinese Medicine for Prevention and Treatment of Refractory Chronic Diseases, Guangzhou, Guangdong 510120, China
| | - Run-Yue Huang
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong 510120, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, Guangdong 510120, China
- Corresponding author
| | - Chuan-Jian Lu
- The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong 510120, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, Guangdong 510120, China
- Corresponding author
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Ren D, Fan M, Sun C, Zhou C, Li Y. Capillary Electrophoresis with Laser Induced Fluorescence Detection for Study of the Association of HSP60 Gene Polymorphism with Gouty Arthritis. J AOAC Int 2019; 102:810-814. [PMID: 30340651 DOI: 10.5740/jaoacint.18-0242] [Citation(s) in RCA: 1] [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: 11/17/2022]
Abstract
Background: Gout arthritis is a common inflammatory arthritis and it poses a major threat to human health. Objective: A method of capillary electrophoresis with laser-induced fluorescence detection (CE-LIF) for the detection of HSP60 gene polymorphism has been developed and applied to the exploration of correlation between gouty arthritis and HSP60 gene polymorphism. Methods: The genomic deoxyribonucleic acid from 59 patients with gouty arthritis and 64 control subjects was extracted and the conservative fragment of HSP60 was amplified. The products were digested with restriction endonuclease NlaIII and then separated and detected by the proposed method. Results: In the case group, there were 7 cases of TT genotype, 29 cases of CC genotype, and 23 cases of CT genotype. In the control group, there were 4 cases of TT genotype, 6 cases of CC genotype, and 54 cases of CT genotype. The detection results of the samples were statistically analyzed by binary logistic regression and Spearman correlation analysis. After adjusting gender, age, and other compounding factors, the TT genotype and CT genotype of the HSP60 gene were found to affect gouty arthritis. Conclusions: When used for gene polymorphism research, the proposed CE-LIF method has the advantages of high efficiency, rapidity, sensitivity, and low sample consumption. A moderate correlation between gouty arthritis and HSP60 genotype distribution was discovered for the first time. Highlights: A new method using CE-LIF for the detection of HSP60 gene polymorphism of 59 patients with gouty arthritis and 64 control subjects in China. The correlation between gouty arthritis and HSP60 gene polymorphism was explored for the first time.
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Affiliation(s)
- Dongxia Ren
- Sichuan University, West China School of Public Health, Chengdu, China 610044
| | - Min Fan
- Sichuan University, West China School of Public Health, Chengdu, China 610044
| | - Chengjun Sun
- Sichuan University, West China School of Public Health, Chengdu, China 610044
| | - Chen Zhou
- Sichuan University, West China School of Public Health, Chengdu, China 610044
| | - Yongxin Li
- Sichuan University, West China School of Public Health, Chengdu, China 610044
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16
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Ruiz-Miyazawa KW, Pinho-Ribeiro FA, Borghi SM, Staurengo-Ferrari L, Fattori V, Amaral FA, Teixeira MM, Alves-Filho JC, Cunha TM, Cunha FQ, Casagrande R, Verri WA. Hesperidin Methylchalcone Suppresses Experimental Gout Arthritis in Mice by Inhibiting NF-κB Activation. J Agric Food Chem 2018; 66:6269-6280. [PMID: 29852732 DOI: 10.1021/acs.jafc.8b00959] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [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: 05/15/2023]
Abstract
Gout arthritis is a painful inflammatory disease induced by monosodium urate (MSU) crystals. We evaluate the therapeutic potential of the flavonoid hesperidin methylchalcone (HMC) in a mouse model of gout arthritis induced by intra-articular injection of MSU (100 μg/10 μL). Orally given HMC (3-30 mg/kg, 100 μL) reduced in a dose-dependent manner the MSU-induced hyperalgesia (44%, p < 0.05), edema (54%, p < 0.05), and leukocyte infiltration (70%, p < 0.05). HMC (30 mg/kg) inhibited MSU-induced infiltration of LysM-eGFP+ cells (81%, p < 0.05), synovitis (76%, p < 0.05), and oxidative stress (increased GSH, FRAP, and ABTS by 62, 78, and 73%, respectively; reduced O2- and NO by 89 and 48%, p < 0.05) and modulated cytokine production (reduced IL-1β, TNF-α, IL-6, and IL-10 by 35, 72, 37, and 46%, respectively, and increased TGF-β by 90%, p < 0.05). HMC also inhibited MSU-induced NF-κB activation (41%, p < 0.05), gp91phox (66%, p < 0.05) and NLRP3 inflammasome components mRNA expression in vivo (72, 77, 71, and 73% for NLRP3, ASC, pro-caspase-1, and pro-IL-1 β, respectively, p < 0.05), and induced Nrf2/HO-1 mRNA expression (3.9- and 5.1-fold increase, respectively, p < 0.05). HMC (30, 100, and 300 μM) did not inhibit IL-1β secretion by macrophages primed by LPS and challenged with MSU (450 μg/mL), demonstrating that the anti-inflammatory effect of HMC in gout arthritis depends on inhibiting NF-κB but not on direct inhibition of inflammasome. The pharmacological effects of HMC indicate its therapeutic potential for the treatment of gout.
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Affiliation(s)
- Kenji W Ruiz-Miyazawa
- Departamento de Ciências Patológicas , Universidade Estadual de Londrina-UEL , Rod. Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011 , 86057-970 Londrina , Paraná , Brazil
| | - Felipe A Pinho-Ribeiro
- Departamento de Ciências Patológicas , Universidade Estadual de Londrina-UEL , Rod. Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011 , 86057-970 Londrina , Paraná , Brazil
| | - Sergio M Borghi
- Departamento de Ciências Patológicas , Universidade Estadual de Londrina-UEL , Rod. Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011 , 86057-970 Londrina , Paraná , Brazil
| | - Larissa Staurengo-Ferrari
- Departamento de Ciências Patológicas , Universidade Estadual de Londrina-UEL , Rod. Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011 , 86057-970 Londrina , Paraná , Brazil
| | - Victor Fattori
- Departamento de Ciências Patológicas , Universidade Estadual de Londrina-UEL , Rod. Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011 , 86057-970 Londrina , Paraná , Brazil
| | - Flavio A Amaral
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Laboratório de Imunofarmacologia , Universidade Federal de Minas Gerais , 31270-567 Belo Horizonte , Minas Gerais , Brazil
| | - Mauro M Teixeira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Laboratório de Imunofarmacologia , Universidade Federal de Minas Gerais , 31270-567 Belo Horizonte , Minas Gerais , Brazil
| | - Jose C Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School , University of São Paulo , Avenida Bandeirantes s/n , 14050-490 Ribeirão Preto , São Paulo , Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School , University of São Paulo , Avenida Bandeirantes s/n , 14050-490 Ribeirão Preto , São Paulo , Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School , University of São Paulo , Avenida Bandeirantes s/n , 14050-490 Ribeirão Preto , São Paulo , Brazil
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas , Universidade Estadual de Londrina-UEL , Avenida Robert Koch, 60, Hospital Universitário , 86038-350 Londrina , Paraná , Brazil
| | - Waldiceu A Verri
- Departamento de Ciências Patológicas , Universidade Estadual de Londrina-UEL , Rod. Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011 , 86057-970 Londrina , Paraná , Brazil
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Huang J, Zhang C, Guo Q, Zhang X, Ma L, Zhan Y, Chen Y. Lesch-Nyhan Syndrome in a Chinese Family with Mutation in the Hypoxanthine-Guanine Phosphoribosyltransferase Gene. Clin Lab 2018; 64:197-200. [PMID: 29479880 DOI: 10.7754/clin.lab.2017.170813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Lesch-Nyhan syndrome (LNS) is a congenital X-linked recessive neurogenetic disorder caused by mutations in the hypoxanthine-guanine phosphoribosyltransferase (HPRT) gene. The main clinical manifestation includes hyperuricemia, juvenile-onset gouty arthritis, and neurological developmental disorders. Studies have reported more than 400 HPRT gene mutation sites, but the incidence of LNS in the Chinese population is extremely low. METHODS Here we report a 16-year-old male patient who suffered neurological dysfunction at an early age and gouty arthritis in his youth. RESULTS No activity of the HPRT enzyme was detected in the erythrocytes. Furthermore, we found a mutation on exon 3 of the HPRT gene in the patient and his mother (exon 3: c.143G>A), which resulted in arginine to histidine (p.R48H) substitution in the encoded protein. The same mutation was reported in several European families, but was found for the first time in a Chinese family. CONCLUSIONS Clinicians in China have poor experience in diagnosing LNS cases due to the low incidence in China. Therefore, LNS screening for infants or adolescents with hyperuricemia, gouty arthritis, and neurological dysfunction should be performed.
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Chu YL, Jiang YQ, Sun SL, Zheng BL, Xiong WS, Li WJ, Chen XM, Wang MJ, Huang QC, Huang RY. The differential profiles of long non-coding RNAs between rheumatoid arthritis and gouty arthritis. Discov Med 2017; 24:133-146. [PMID: 29272690] [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: 06/07/2023]
Abstract
OBJECTIVE This study was designed to determine the differential profiles of long non-coding RNAs (lncRNAs) between rheumatoid arthritis (RA) and gouty arthritis (GA), which may lead to the discovery of specific biomarkers for RA diagnosis and treatment in the future. METHODS The profiles of lncRNAs were determined by Agilent microarray. Bioinformatics analyses, including Gene Ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses, of the large dataset obtained from microarray experiments were performed. RESULTS A total of 765 lncRNAs and 2,808 mRNAs were significantly and differentially expressed in RA samples as compared to GA samples. Moreover, of 2,808 differentially expressed mRNAs, 178 upregulated mRNAs and 21 downregulated mRNAs were identified to be strongly correlated with lncRNAs examined in this study. Bioinformatics analyses revealed the tumor-like phenotype of synovial cells in RA and the involvement of immune system process in GA. In addition, this study demonstrated the significantly different molecular origins of two Chinese Medicine syndrome patterns of RA patients -- blood stasis and non-blood stasis. CONCLUSIONS Our study showed for the first time the differentially expressed lncRNA profiles in synovial tissues between RA and GA and between two clinical phenotypes of RA patients differentiated by Chinese Medicine. This study helps achieving personalized medicine in RA. Larger-scale studies are required to validate the data presented.
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Affiliation(s)
- Yong-Liang Chu
- Department of Rheumatology, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong, China
- These authors contributed equally to this article
| | - Yi-Qi Jiang
- Beijing Genomics Institute-Shenzhen, Shenzhen, Guangdong, China
- These authors contributed equally to this article
| | - Si-Long Sun
- Beijing Genomics Institute-Shenzhen, Shenzhen, Guangdong, China
- These authors contributed equally to this article
| | - Bao-Lin Zheng
- Department of Rheumatology, Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong, China
| | - Wan-Sheng Xiong
- Department of Rheumatology, Beijing University of Chinese Medicine Shenzhen Hospital, Shenzhen, Guangdong, China
| | - Wen-Jie Li
- Department of Rheumatology, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong, China
| | - Xiu-Min Chen
- Department of Rheumatology, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong, China
| | - Mao-Jie Wang
- Department of Rheumatology, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong, China
| | - Qing-Chun Huang
- Department of Rheumatology, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong, China
| | - Run-Yue Huang
- Department of Rheumatology, The Second Affiliated Hospital, Guangzhou University of Chinese Medicine (Guangdong Provincial Hospital of Chinese Medicine), Guangzhou, Guangdong, China
- Beijing Genomics Institute-Shenzhen, Shenzhen, Guangdong, China
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou, Guangdong, China
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Papanagnou P, Stivarou T, Tsironi M. The Role of miRNAs in Common Inflammatory Arthropathies: Osteoarthritis and Gouty Arthritis. Biomolecules 2016; 6:biom6040044. [PMID: 27845712 PMCID: PMC5197954 DOI: 10.3390/biom6040044] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 10/29/2016] [Accepted: 11/02/2016] [Indexed: 01/15/2023] Open
Abstract
MicroRNAs (miRNAs) are small, non-coding RNA species that are highly evolutionarily conserved, from higher invertebrates to man. Up to 1000 miRNAs have been identified in human cells thus far, where they are key regulators of the expression of numerous targets at the post-transcriptional level. They are implicated in various processes, including cell differentiation, metabolism, and inflammation. An expanding list of miRNAs is known to be involved in the pathogenesis of common, non-autoimmune inflammatory diseases. Interestingly, osteoarthritis (OA) is now being conceptualized as a metabolic disease, as there is a correlation among hyperuricemia and metabolic syndrome (MetS). Experimental evidence suggests that metabolic deregulation is a commonality between these different pathological entities, and that miRNAs are key players in the modulation of metabolic routes. In light of these findings, this review discusses the role of miRNAs in OA and gouty arthritis, as well as the possible therapeutic targetability of miRNAs in these diseases.
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Affiliation(s)
- Panagiota Papanagnou
- Department of Nursing, Faculty of Human Movement and Quality of Life Sciences, University of Peloponnese, Orthias Artemidos and Plateon St, GR-23100 Sparti, Greece.
| | - Theodora Stivarou
- Department of Nursing, Faculty of Human Movement and Quality of Life Sciences, University of Peloponnese, Orthias Artemidos and Plateon St, GR-23100 Sparti, Greece.
- Immunology Laboratory, Immunology Department, Hellenic Pasteur Institute, P.O Box 115 21, Athens, Greece.
| | - Maria Tsironi
- Department of Nursing, Faculty of Human Movement and Quality of Life Sciences, University of Peloponnese, Orthias Artemidos and Plateon St, GR-23100 Sparti, Greece.
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Zhang N, Gong X, Lu M, Chen X, Qin X, Ge H. Crystal structures of Apo and GMP bound hypoxanthine-guanine phosphoribosyltransferase from Legionella pneumophila and the implications in gouty arthritis. J Struct Biol 2016; 194:311-6. [PMID: 26968365 DOI: 10.1016/j.jsb.2016.03.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 03/07/2016] [Accepted: 03/08/2016] [Indexed: 01/10/2023]
Abstract
Hypoxanthine-guanine phosphoribosyltransferase (HGPRT) (EC 2.4.2.8) reversibly catalyzes the transfer of the 5-phophoribosyl group from 5-phosphoribosyl-alpha-1-pyrophosphate (PRPP) to hypoxanthine or guanine to form inosine monophosphate (IMP) or guanosine monophosphate (GMP) in the purine salvage pathway. To investigate the catalytic mechanism of this enzyme in the intracellular pathogen Legionella pneumophila, we determined the crystal structures of the L. pneumophila HGPRT (LpHGPRT) both in its apo-form and in complex with GMP. The structures reveal that LpHGPRT comprises a core domain and a hood domain which are packed together to create a cavity for GMP-binding and the enzymatic catalysis. The binding of GMP induces conformational changes of the stable loop II. This new binding site is closely related to the Gout arthritis-linked human HGPRT mutation site (Ser103Arg). Finally, these structures of LpHGPRT provide insights into the catalytic mechanism of HGPRT.
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Affiliation(s)
- Nannan Zhang
- Institute of Health Sciences and School of Life Science, Anhui University, Hefei, Anhui 230601, China
| | - Xiaojian Gong
- Institute of Health Sciences and School of Life Science, Anhui University, Hefei, Anhui 230601, China
| | - Min Lu
- Institute of Health Sciences and School of Life Science, Anhui University, Hefei, Anhui 230601, China
| | - Xiaofang Chen
- Institute of Health Sciences and School of Life Science, Anhui University, Hefei, Anhui 230601, China
| | - Ximing Qin
- Institute of Health Sciences and School of Life Science, Anhui University, Hefei, Anhui 230601, China
| | - Honghua Ge
- Institute of Health Sciences and School of Life Science, Anhui University, Hefei, Anhui 230601, China; Modern Experiment Technology Center, Anhui University, Hefei, Anhui 230601, China.
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Alves C, Pruijma M, Rotman S, Bonny O. [Chronic kidney diseases do not always pass unnoticed]. Rev Med Suisse 2016; 12:382-386. [PMID: 27039602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Kidney diseases are frequent, but most of the time, they develop unnoticed. This paucity of symptoms may lead to delayed diagnosis with important consequences on their outcome. Nevertheless, specific systemic signs such as skin lesions, joint pain or electrolytes disturbances may sometimes alert the clinician and direct the diagnosis to an underlying nephropathy. A high awareness of clinicians is warranted to recognize these red flags and diagnose these diseases early, as illustrated by two clinical cases discussed in this article.
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Kim YS, Kim Y, Park G, Kim SK, Choe JY, Park BL, Kim HS. Genetic analysis of ABCG2 and SLC2A9 gene polymorphisms in gouty arthritis in a Korean population. Korean J Intern Med 2015; 30:913-20. [PMID: 26552468 PMCID: PMC4642022 DOI: 10.3904/kjim.2015.30.6.913] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 03/16/2015] [Accepted: 04/30/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND/AIMS Gout is a common inf lammatory arthritis triggered by the crystallization of uric acid in the joints. Serum uric acid levels are highly heritable, suggesting a strong genetic component. Independent studies to confirm the genetic associations with gout in various ethnic populations are warranted. We investigated the association of polymorphisms in the ABCG2 and SLC2A9 genes with gout in Korean patients and healthy individuals. METHODS We consecutively enrolled 109 patients with gout and 102 healthy controls. The diagnosis of gout was based on the preliminary criteria of the America College of Rheumatology. Genomic DNA was extracted from whole blood samples. We identified single nucleotide polymorphism (SNP) changes in the ABCG2 and SLC2A9 genes using a direct sequencing technique. rs2231142 in ABCG2 and rs6449213 and rs16890979 in SLC2A9 and nearby regions were amplified by polymerase chain reaction. RESULTS Patients with gout had significantly higher A/A genotype (29.3% vs. 4.9%, respectively) and A allele (52.8% vs. 26.5%, respectively) frequencies of rs2231142 in ABCG2 than did controls (χ(2) = 29.42, p < 0.001; odds ratio, 3.32; 95% confidence interval, 2.11 to 5.20). We found novel polymorphisms (c.881A>G and c.1002+78G>A) in the SLC2A9 gene. The univariate logistic regression analysis revealed that the c.881A>G and c.1002+78G>A SNPs were significantly higher in patients than in controls. CONCLUSIONS We demonstrated a significant association between rs2231142 in the ABCG2 gene and gout and identified novel SNPs, c.881A>G and c.1002+78G>A, in the SLC2A9 gene that may be associated with gout in a Korean population.
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Affiliation(s)
- Yun Sung Kim
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju, Korea
| | - Yunsuek Kim
- Department of Internal Medicine, Soonchunhyang University Hospital, Seoul, Korea
| | - Geon Park
- Department of Clinical Pathology, Chosun University School of Medicine, Gwangju, Korea
| | - Seong-Kyu Kim
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Jung-Yoon Choe
- Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Byung Lae Park
- Department of Genetic Epidemiology, SNP Genetics Inc., Seoul, Korea
| | - Hyun Sook Kim
- Department of Internal Medicine, Soonchunhyang University Hospital, Seoul, Korea
- Correspondence to Hyun-Sook Kim, M.D. Division of Rheumatology, Department of Internal Medicine, Soonchunhyang University Hospital, 59 Daesagwan-ro, Yongsan-gu, Seoul 04401, Korea Tel: +82-2-710-3214 Fax: +82-2-709-9554 E-mail:
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Nonaka F, Migita K, Haramura T, Sumiyoshi R, Kawakami A, Eguchi K. Colchicine-responsive protracted gouty arthritis with systemic inflammatory reactions. Mod Rheumatol 2014; 24:540-3. [PMID: 24533551 DOI: 10.3109/14397595.2013.874732] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Fumiaki Nonaka
- Department of Rheumatology, Sasebo City General Hospital , Sasebo , Japan
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Qing YF, Zhou JG, Zhang QB, Wang DS, Li M, Yang QB, Huang CP, Yin L, Pan SY, Xie WG, Zhang MY, Pu MJ, Zeng M. Association of TLR4 Gene rs2149356 polymorphism with primary gouty arthritis in a case-control study. PLoS One 2013; 8:e64845. [PMID: 23738004 PMCID: PMC3667827 DOI: 10.1371/journal.pone.0064845] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 04/19/2013] [Indexed: 02/04/2023] Open
Abstract
Background The toll-like receptor (TLR)4-interleukin1β (IL1β) signaling pathway is involved in the monosodium urate (MSU)-mediated inflammation. The aim of this present study was to determine whether the TLR4 gene rs2149356 SNP is associated with gouty arthritis (GA) susceptibility and whether rs2149356 SNP impacts the TLR4-IL1β signaling pathway molecules expression. Methods and Findings The rs2149356 SNP was detected in 459 GA patients and 669 control subjects (containing 459 healthy and 210 hyperuricemic subjects). Peripheral blood mononuclear cells (PBMCs) TLR4 mRNA and serum IL1β were measured in different genotype carriers, and correlations between TLR4 gene SNP and TLR4 mRNA, IL1β were investigated. The frequencies of the genotype and allele were significantly different between the GA and control groups (P<0.01, respectively). The TT genotype was associated with a significantly increased risk of GA (OR = 1.88); this finding was not influenced by making adjustments for the components of possible confounders (adjusted OR = 1.96). TLR4 mRNA and IL1β were significantly increased in the TT genotype from acute GA patients (P<0.05, respectively), and lipids were significantly different among three genotypes in the GA patients (P<0.05, respectively). Conclusions The TLR4 gene rs2149356 SNP might be associated with GA susceptibility, and might participate in regulating immune, inflammation and lipid metabolism. Further studies are required to confirm these findings.
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Affiliation(s)
- Yu-Feng Qing
- Department of Rheumatology and Immunology of the Affiliated Hospital, North Sichuan Medical College, China
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Unger S, Tausche AK, Kopprasch S, Bornstein SR, Aringer M, Grässler J. [Molecular basis of primary renal hyperuricemia : role of the human urate transporter hURAT1]. Z Rheumatol 2008; 66:556, 58-61. [PMID: 17891408 DOI: 10.1007/s00393-007-0208-y] [Citation(s) in RCA: 5] [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] [Indexed: 02/04/2023]
Abstract
In highly industrialized countries hyperuricemia is one of the most common metabolic disorders. High uric acid blood levels may lead to the manifestation of gout owing to the precipitation of urate crystals in connective tissue, the skeletal system and kidneys. A primary reduction of renal uric acid excretion can be detected in more than 90% of all cases of hyperuricemia. Despite the identification of several uric acid transporting proteins their pathogenetic role for the induction of primary reduced renal uric acid excretion has not yet been verified. As a result of a case-control study on individuals with normal and reduced renal uric acid excretion, an association of polymorphisms in the human urate transporter 1 gene (hURAT1) with primary reduced urate excretion has been demonstrated for the first time. The hURAT1 gene is an organic anion transporter (SLC22A12), which is preferentially expressed in the apical membrane of proximal renal tubule cells. Functioning as an antiporter, hURAT1 mediates the uptake of urate from the lumen into proximal tubule cells in exchange for organic and inorganic anions. Loss-of-function mutations in the hURAT1 gene are a cause of hereditary renal hypouricemia. The precisely regulated hURAT1 is a candidate gene for hyperuricemia and an important target for the development and optimization of new diagnostic approaches and pharmacological interventions of primary reduced renal uric acid excretion.
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Affiliation(s)
- S Unger
- Bereich Pathologische Biochemie, Medizinische Klinik und Poliklinik III, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Dresden, Deutschland
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Abstract
Gout cannot be regarded a benign disease, as it is unfortunately often misunderstood. In view of the lack of recent evidence-based recommendations for the diagnosis and management of gout, the European League Against Rheumatism (EULAR) decided to commission a task force to develop such recommendations. A literature search was performed to comprehensively assess the clinical and epidemiological aspects, diagnostic tools, as well as effectiveness of therapeutic measures and the overall management. Subsequently, consensus among the participating experts should be achieved by applying a Delphi process. As a result of this project 10 recommendations for diagnosis of gout as well as 12 recommendations with respect to the management of the disease could be elaborated. Gout can be regarded as a disease with excellent prognosis in the light of the diagnostic and therapeutic possibilities available. However, this only holds true if all these possibilities are applied in the appropriate manner in daily routine. It constituted the primary goal of the EULAR project to deliver a substantial contribution to improve routine care of affected patients.
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Affiliation(s)
- B Grusch
- Medizinische Abteilung, NO Zentrum für Rheumatologie, Landesklinikum Weinviertel Stockerau, Karl Landsteiner Institut für Klinische Rheumatologie, Landstrasse 18, 2000, Stockerau, Osterreich
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Vázquez-Mellado J, Alvarado-Romano V, Burgos-Vargas R, Jiménez-Vaca AL, Pozo-Molina G, Cuevas-Covarrubias SA. Homozygous frameshift mutation in the SLC22A12 gene in a patient with primary gout and high levels of serum uric acid. J Clin Pathol 2007; 60:947-8. [PMID: 17660342 PMCID: PMC1994487 DOI: 10.1136/jcp.2006.037473] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- J Vázquez-Mellado
- Rheumatology Service, Hospital General de México, Facultad de Medicina, Universidad Nacional Autónoma de México, México DF, Mexico
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Lam CW, Ng KF, Chan HM, Lee KP, Siu TS, Tam S. A novel mutation at a ligand-binding site of hypoxanthine–guanine phosphoribosyl transferase, p.Y105C (HPRTHongKong), in a Chinese teenager with recurrent gouty arthritis. Clin Chim Acta 2007; 380:252-3. [PMID: 17368601 DOI: 10.1016/j.cca.2007.02.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Revised: 02/14/2007] [Accepted: 02/14/2007] [Indexed: 11/24/2022]
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Abstract
PURPOSE OF REVIEW We examine the major genes in mice and humans involved in the pathogenesis of monosodium urate, calcium pyrophosphate dihydrate and hydroxyapatite crystal-induced arthritis. RECENT FINDINGS Several genetic causes of renal disease associated with hyperuricemia and gout provide insight into genes involved in renal urate handling. Mutations or polymorphisms in exons 4 and 5 and intron 4 of urate transporter 1 may be independent genetic markers of hyperuricemia and gout. Genetic analysis supports the role of ANKH mutations in calcium pyrophosphate dihydrate-induced arthritis. ANKH gain-of-function mutations were confirmed by functional studies; however, the crystals formed in ATD5 cells were basic calcium phosphate, not calcium pyrophosphate dihydrate, underlying the significance of chondrocyte differentiation state and the factors regulating normal and pathological mineralization. Animal models have implicated a general model of crystal-induced inflammation involving innate immunity through the NALP3 (Natch domain, leucine-rich repeat, and PYD-containing protein 3) inflammasome signaling through the interleukin-1 receptor and its signaling protein myeloid differentiation primary response protein 88. SUMMARY Genetic analysis has elucidated genes responsible for crystal formation and animal models have unveiled mechanisms in the development of crystal-induced arthritis. Future studies will hasten understanding of the pathology of crystal-induced arthritis and provide new therapies.
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Affiliation(s)
- Anthony M Reginato
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts, USA.
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Liu-Bryan R, Scott P, Sydlaske A, Rose DM, Terkeltaub R. Innate immunity conferred by Toll-like receptors 2 and 4 and myeloid differentiation factor 88 expression is pivotal to monosodium urate monohydrate crystal-induced inflammation. ACTA ACUST UNITED AC 2005; 52:2936-46. [PMID: 16142712 DOI: 10.1002/art.21238] [Citation(s) in RCA: 274] [Impact Index Per Article: 14.4] [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
OBJECTIVE In gout, incompletely defined molecular factors alter recognition of dormant articular and bursal monosodium urate monohydrate (MSU) crystal deposits, thereby inducing self-limiting bouts of characteristically severe neutrophilic inflammation. To define primary determinants of cellular recognition, uptake, and inflammatory responses to MSU crystals, we conducted a study to test the role of Toll-like receptor 2 (TLR-2), TLR-4, and the cytosolic TLR adapter protein myeloid differentiation factor 88 (MyD88), which are centrally involved in innate immune recognition of microbial pathogens. METHODS We isolated bone marrow-derived macrophages (BMDMs) in TLR-2-/-, TLR-4-/-, MyD88-/-, and congenic wild-type mice, and assessed phagocytosis and cytokine expression in response to endotoxin-free MSU crystals under serum-free conditions. MSU crystals also were injected into mouse synovium-like subcutaneous air pouches. RESULTS TLR-2-/-, TLR-4-/-, and MyD88-/- BMDMs demonstrated impaired uptake of MSU crystals in vitro. MSU crystal-induced production of interleukin-1beta (IL-1beta), tumor necrosis factor alpha, keratinocyte-derived cytokine/growth-related oncogene alpha, and transforming growth factor beta1 also were significantly suppressed in TLR-2-/- and TLR-4-/- BMDMs and were blunted in MyD88-/- BMDMs in vitro. Neutrophil influx and local induction of IL-1beta in subcutaneous air pouches were suppressed 6 hours after injection of MSU crystals in TLR-2-/- and TLR-4-/- mice and were attenuated in MyD88-/- mice. CONCLUSION The murine host requires TLR-2, TLR-4, and MyD88 for macrophage activation and development of full-blown neutrophilic, air pouch inflammation in response to MSU crystals. Our findings implicate innate immune cellular recognition of naked MSU crystals by specific TLRs as a major factor in determining the inflammatory potential of MSU crystal deposits and the course of gouty arthritis.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Animals
- Antigens, Differentiation/genetics
- Antigens, Differentiation/metabolism
- Arthritis, Gouty/genetics
- Arthritis, Gouty/immunology
- Arthritis, Gouty/metabolism
- Bone Marrow Cells/drug effects
- Bone Marrow Cells/metabolism
- Cytokines/metabolism
- Disease Models, Animal
- Immunity, Innate/immunology
- Macrophages/drug effects
- Macrophages/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Myeloid Differentiation Factor 88
- Phagocytosis/drug effects
- Receptors, Immunologic/genetics
- Receptors, Immunologic/metabolism
- Specific Pathogen-Free Organisms
- Toll-Like Receptor 2
- Toll-Like Receptor 4
- Uric Acid/immunology
- Uric Acid/toxicity
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Affiliation(s)
- Ru Liu-Bryan
- VA Medical Center, University of California, San Diego 92161, USA.
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Chen L, Hsieh MS, Ho HC, Liu YH, Chou DT, Tsai SH. Stimulation of inducible nitric oxide synthase by monosodium urate crystals in macrophages and expression of iNOS in gouty arthritis. Nitric Oxide 2005; 11:228-36. [PMID: 15566969 DOI: 10.1016/j.niox.2004.09.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [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: 07/07/2004] [Revised: 08/25/2004] [Indexed: 11/15/2022]
Abstract
From the studies on the involvement of iNOS in arthritis, it is clear that attention has focused primarily on rheumatoid arthritis (RA) and osteoarthritis (OA). To date, little is known about the role of iNOS in the pathophysiology of gouty arthritis (GA). Here, we investigated the significance of iNOS expression in cell culture system as well as in GA patients. Gouty crystals monosodium urate (MSU) appeared to up-regulate inducible nitric oxide synthase (iNOS) mRNA and protein expression in a concentration- and time-dependent manner in RAW264.7 macrophages. This increase of iNOS expression is attributable to the activation of multiple signaling pathways. Evidence for this was initially established by inhibitor treatment of cells in the presence of MSU. While the JAK inhibitor AG490, the PI3K inhibitor LY294002, and the NFkappaB inhibitor PDTC abrogated almost completely the expression of iNOS induced by MSU, the ERK1/2 inhibitor PD98059 was only partially effective. Furthermore, the effect of MSU on the activation of PI3K/Akt, JAK/STAT, ERK1/2, and NFkappaB signaling molecules was carefully examined. Moreover, it was shown that GAS and NFkappaB motifs are required for iNOS expression mediated by MSU. In addition, synovial tissues obtained from GA patients displayed enhanced expression of iNOS when compared with normal synovium. Taken together, these findings provide the first evidence for the potential importance of iNOS in the pathogenesis of GA as well as RA and OA, and in turn raise the possibility that iNOS may be an ideal target for preventive therapy in human arthritis.
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Affiliation(s)
- Linda Chen
- Department of Orthopaedics and Traumatology, School of Medicine, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan, ROC
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Abstract
In most cases gout is the clinical manifestation of familial hyperuricemia. Pathogenesis of hyperuricemia, clinical manifestations, diagnosis and differential diagnosis of hyperuricemia and gout are described. Treatment of hyperuricemia consists of dietary measurements and administration of uric acid lowering drugs, such as allopurinol or uricosuric agents. Nonsteroidal antiinflammatory drugs, colchicine and glucocorticosteroids are the treatment of choice for the acute gout attack. Prophylaxis of acute uric acid nephropathy consists of hydration, urine alkalinization and administration of allopurinol or rasburicase. For treatment of acute uric acid nephropathy rasburicase is the drug of choice.
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Affiliation(s)
- W Gröbner
- Kreisklinik Balingen, Akademisches Lehrkrankenhaus der Universität Tübingen, Tübinger Str. 30, 72336, Balingen, Germany
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Yoshii M, Yoshimatsu T, Miyata A, Murata A, Nutahara K, Higashihara E. [A case of familial juvenile gouty nephropathy associated with a right renal tumor]. Nihon Jinzo Gakkai Shi 2000; 42:608-13. [PMID: 11155706] [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: 02/18/2023]
Abstract
We present a case of familial juvenile gouty nephropathy which was associated with a right renal tumor that was found incidentally. The patient was a 27-year-old woman who initially presented with acute gouty arthritis at the age of twenty years. Her mother and her sister had been attacked with acute gouty arthritis in their early twenties. Progressive deterioration in the renal function was noted in the three family members who had experienced gouty attack. Her mother was maintained on hemodialysis. As image diagnoses could not rule out malignancy in her right renal tumor, in situ non-ischemic enucleation of the right renal tumor using a microwave tissue coagulator(Microtaze) and a renal biopsy were performed. The pathological diagnosis of the renal tumor was tubulopapillary adenoma, and the renal biopsy showed minimal change in the glomeruli and tubules. The post-operative course was uneventful. The serum creatinine and creatinine clearance before and three months after the operation were 2.4 mg/dl and 2.6 mg/dl, 36.7 ml/min and 32.5 ml/min, respectively. The renal biopsy findings that glomerular and tubular changes were minimal and there was no tissue precipitation of uric acid or sodium urate, and the fact that her renal function decreased progressively despite the treatment of hyperuricemia suggested strongly that renal function might have deteriorated due to unknown factors other than hyperuricemia.
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Affiliation(s)
- M Yoshii
- Department of Urology, Kyorin University School of Medicine, Tokyo, Japan
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Pavelka K, Sebesta I, Blovská J, Malý J, Chadimová M. [Familial juvenile gouty nephropathy]. Cas Lek Cesk 1996; 135:668-71. [PMID: 8998814] [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: 02/03/2023]
Abstract
The authors present the description of a family comprising father (his mother had died middle-aged from renal failure) and his two children aged 15 and 17 years who developed is young age (already in the second decade) gouty arthritis and primary interstitial nephritis. Based on the laboratory finding of hyperuricaemia with disproportionately low urate excretion and excretion of excessive uric acid formation, an enzyme defect and other renal disease the authors diagnosed familial gouty juvenile nephropathy. This diagnosis was confirmed also by histological examination of renal biopsy in the youngest member of the family. It is a disease which belongs into the group of hereditary types of nephritis. In the literature worldwide some nine families were described, in the Czech Republic it is the first description of this condition.
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Affiliation(s)
- K Pavelka
- Centrum dĕdicných metabolických poruch, Praha
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Abstract
The hypoxanthine phosphoribosyltransferase (HPRT) locus is a constitutively expressed housekeeping gene characterized by a notably higher level of expression in the mammalian brain. The enzyme it encodes is key to purine salvage in humans and is the basis for the X-linked recessive disorder, Lesch-Nyhan syndrome (LNS). Methylation in the promoter plays a critical, if not fully understood, role in transcriptional silencing of the locus on the inactive chromosome, possibly by conferring structural stability. In vivo footprinting assays of the promoter region have shown protein interaction with multiple Spl-binding sites, a possible AP2 site, and a potentially novel binding site. In vitro studies of HPRT promoter deletion constructs have identified a minimal promoter element necessary for maximal transcription and a position-dependent, orientation-independent repressor element (HPRT-NE) that functions on heterologous promoters. Regulatory intron elements have also been observed. Studies on transgenic mice bearing HPRT promoter constructs have shown that the minimal promoter element is insufficient for in vivo expression and that HPRT-NE is responsible for conferring neuronal specificity. HPRT-mice possess metabolic defects similar to LNS patients, but fail to develop human behavioral abnormalities, perhaps because of species differences in purine metabolism. A neuronal-specific protein complex appears to be necessary for activator function of HPRT-NE, while a ubiquitously expressed complex may be responsible for repression. Sequence analysis Indicates that the latter complex may depend on the multifunctional transcription factor YY1 for binding. A fuller understanding of HPRT gene regulation will hopefully provide insight into the transcriptional mechanisms controlling the expression of housekeeping and brain-specific genes.
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Affiliation(s)
- S Jiralerspong
- Department of Neurology, Baylor College of Medicine, Houston, Texas 77030-3411, USA
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Abstract
We have identified a mutation in the gene coding for the enzyme hypoxanthine phosphoribosyltransferase in a pediatric patient with hyperuricemia and nephrolithiasis. The mutation is a nucleotide substitution causing an amino acid substitution in the hypoxanthine phosphoribosyltransferase protein. In this patient, fibroblasts but not lymphocytes showed resistance to 6-thioguanine, and reduced enzyme activity was detected in lymphocytes. These results are consistent with the intermediary phenotype associated with partial hypoxanthine phosphoribosyltransferase enzyme deficiency. Altogether, six males in this family suffered from hyperuricemic symptoms, and small differences in phenotype were seen.
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Affiliation(s)
- S Marcus
- Environmental Medicine Unit, Karolinska Institute, CNT/Novum, Hudding, Sweden
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Yokota N, Yamanaka H, Yamamoto Y, Fujimoto S, Eto T, Tanaka K. Autosomal dominant transmission of gouty arthritis with renal disease in a large Japanese family. Ann Rheum Dis 1991; 50:108-11. [PMID: 1847794 PMCID: PMC1004348 DOI: 10.1136/ard.50.2.108] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [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: 12/29/2022]
Abstract
Six generations of a Japanese family had gouty arthritis and progressive nephropathy. Data on nine of 51 women (18%) and 15 of 66 men (23%) with either asymptomatic hyperuricaemia, gouty arthritis, or renal insufficiency were obtained. Renal function in four men and one woman with hyperuricaemia or gouty arthritis was also examined. Urinary excretion of uric acid was decreased in all subjects examined, including the young. Erythrocyte phosphoribosylpyrophosphate synthetase and hypoxanthine-guanine phosphoribosyltransferase activities determined in 10 patients were normal. Some patients had been treated with allopurinol to reduce serum uric acid concentrations, but the treatment did not prevent progression of renal impairment. Transmission of the disease in this large family is considered to be autosomal dominant. The data suggest that the disease in this family is the same entity as that described by other workers--that is, familial urate nephropathy. As far as is known this is the largest family with this disease so far reported.
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Affiliation(s)
- N Yokota
- First Department of Internal Medicine, Miyazaki Medical College, Japan
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Rossi AM, Thijssen JC, Tates AD, Vrieling H, Natarajan AT, Lohman PH, van Zeeland AA. Mutations affecting RNA splicing in man are detected more frequently in somatic than in germ cells. Mutat Res 1990; 244:353-7. [PMID: 2385250 DOI: 10.1016/0165-7992(90)90084-w] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.5] [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: 12/31/2022]
Abstract
The spectrum of DNA sequence alterations in the hypoxanthine-guanine phosphoribosyltransferase (hprt) gene of HPRTase-deficient T-lymphocytes isolated from the blood of healthy male donors was determined and compared with the spectrum found in patients suffering from genetic diseases (Lesch-Nyhan syndrome or gouty arthritis) associated with a mutation in the same gene. Most of the T-cell mutants still produced hprt mRNA which was converted into cDNA and used for DNA sequence analysis after amplification using the polymerase chain reaction (PCR). In 39% of the 31 analyzed T-cell mutants of normal donors 1 or 2 exons were completely or partially deleted from hprt mRNA, probably because of a mutation in a splice acceptor site. Among patients suffering from the Lesch-Nyhan syndrome or gouty arthritis, the class of splice mutations amounts only to 7%. These data suggest that carriers of splice mutations often do not show the characteristics of HPRTase deficiency associated with these genetic diseases, because correctly spliced hprt mRNA is still produced at a low level.
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Affiliation(s)
- A M Rossi
- MGC-Department of Radiation Genetics and Chemical Mutagenesis, Leiden University, The Netherlands
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