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Jiang Y, Wang Y, Liu B, Zhao Y, He Q, Wu K. Hyperuricemia May Increase Risk of Achilles Tendon Rupture: A Case Control Study. J Foot Ankle Surg 2024:S1067-2516(24)00137-6. [PMID: 38972566 DOI: 10.1053/j.jfas.2024.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/29/2024] [Accepted: 06/09/2024] [Indexed: 07/09/2024]
Abstract
It has been demonstrated in a number of studies that high levels of uric acid can cause crystal deposition in the tendons of the lower extremities, which in turn can impair the Achilles tendon. This study aimed to interpret whether hyperuricemia is relevant with Achilles tendon rupture. Patients diagnosed with Achilles tendon rupture at the same institution between 2013 and 2022 were included in the case group. Healthy subjects who had physical examinations during the same period were included in the control group. Propensity score matching was used to match in a 1:1 ratio. Demographic and clinical characteristics of patients in both groups were compared. Five hundred and fourteen patients were included in the study (ATR=257; Control group=257). The proportion of individuals with hyperuricemia varied significantly between the 2 groups (Achilles tendon rupture group=43.6%; control group=27.6%; p<0.001). The Achilles tendon rupture and hyperuricemia were linked by conditional logistic regression (p<0.001; OR=2.036; 95CI%=1.400-2.961). Compared with healthy subjects, patients with hyperuricemia have a higher risk of Achilles tendon rupture. Further studies are required to verify the effects of hyperuricemia and monosodium urate crystals on Achilles tendon structure.
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Affiliation(s)
- Yi Jiang
- The First Hospital of Jiaxing and Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, China
| | - Yuchao Wang
- The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Bokai Liu
- The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Yilin Zhao
- The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Qingquan He
- The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Kanglong Wu
- The First Hospital of Jiaxing and Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, China.
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Kang N, Ji Z, Li Y, Gao J, Wu X, Zhang X, Duan Q, Zhu C, Xu Y, Wen L, Shi X, Liu W. Metabolite-derived damage-associated molecular patterns in immunological diseases. FEBS J 2024; 291:2051-2067. [PMID: 37432883 DOI: 10.1111/febs.16902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 06/05/2023] [Accepted: 07/10/2023] [Indexed: 07/13/2023]
Abstract
Damage-associated molecular patterns (DAMPs) are typically derived from the endogenous elements of necrosis cells and can trigger inflammatory responses by activating DAMPs-sensing receptors on immune cells. Failure to clear DAMPs may lead to persistent inflammation, thereby contributing to the pathogenesis of immunological diseases. This review focuses on a newly recognized class of DAMPs derived from lipid, glucose, nucleotide, and amino acid metabolic pathways, which are then termed as metabolite-derived DAMPs. This review summarizes the reported molecular mechanisms of these metabolite-derived DAMPs in exacerbating inflammation responses, which may attribute to the pathology of certain types of immunological diseases. Additionally, this review also highlights both direct and indirect clinical interventions that have been explored to mitigate the pathological effects of these DAMPs. By summarizing our current understanding of metabolite-derived DAMPs, this review aims to inspire future thoughts and endeavors on targeted medicinal interventions and the development of therapies for immunological diseases.
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Affiliation(s)
- Na Kang
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Zhenglin Ji
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - Yuxin Li
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - Ji Gao
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - Xinfeng Wu
- Department of Rheumatology and Immunology, the First Affiliated Hospital, and College of Clinical Medical of Henan University of Science and Technology, Luoyang, China
| | - Xiaoyang Zhang
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - Qinghui Duan
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Can Zhu
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - Yue Xu
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
| | - Luyao Wen
- Department of Rheumatology and Immunology, the First Affiliated Hospital, and College of Clinical Medical of Henan University of Science and Technology, Luoyang, China
| | - Xiaofei Shi
- Department of Rheumatology and Immunology, the First Affiliated Hospital, and College of Clinical Medical of Henan University of Science and Technology, Luoyang, China
| | - Wanli Liu
- State Key Laboratory of Membrane Biology, School of Life Sciences, Institute for Immunology, Beijing Advanced Innovation Center for Structural Biology, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Beijing Key Lab for Immunological Research on Chronic Diseases, Tsinghua University, Beijing, China
- Tsinghua-Peking Center for Life Sciences, Beijing, China
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Catalán L, Carceller MC, Terencio MC, Alcaraz MJ, Ferrándiz ML, Montesinos MC. Osteostatin Mitigates Gouty Arthritis through the Inhibition of Caspase-1 Activation and Upregulation of Nrf2 Expression. Int J Mol Sci 2024; 25:2752. [PMID: 38474000 DOI: 10.3390/ijms25052752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 02/16/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Gouty arthritis results from monosodium urate (MSU) crystal deposition in joints, initiating (pro)-interleukin (IL)-1β maturation, inflammatory mediator release, and neutrophil infiltration, leading to joint swelling and pain. Parathyroid hormone-related protein (107-111) C-terminal peptide (osteostatin) has shown anti-inflammatory properties in osteoblasts and collagen-induced arthritis in mice, but its impact in gouty arthritis models remains unexplored. We investigated the effect of osteostatin on pyroptosis, inflammation, and oxidation in macrophages, as well as its role in the formation of calcium pyrophosphate dihydrate crystals and MSU-induced gouty arthritis in mice models. Osteostatin ameliorated pyroptosis induced by lipopolysaccharide and adenosine 5'-triphosphate (LPS + ATP) in mice peritoneal macrophages by reducing the expression of caspase-1, lactate dehydrogenase release, and IL-1β and IL-18 secretion. Additionally, IL-6 and tumor necrosis factor-α (TNF-α) were also decreased due to the reduced activation of the NF-κB pathway. Furthermore, osteostatin displayed antioxidant properties in LPS + ATP-stimulated macrophages, resulting in reduced production of mitochondrial and extracellular reactive oxygen species and enhanced Nrf2 translocation to the nuclei. In both models of gouty arthritis, osteostatin administration resulted in reduced pro-inflammatory cytokine production, decreased leukocyte migration, and reduced caspase-1 and NF-κB activation. These results highlight the potential of osteostatin as a therapeutic option for gouty arthritis.
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Affiliation(s)
- Laura Catalán
- Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
- Department of Pharmacology, Faculty of Pharmacy and Food Sciences, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - María Carmen Carceller
- Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
- Department of Pharmacy, Pharmaceutical Technology and Parasitology, Faculty of Pharmacy and Food Sciences, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - María Carmen Terencio
- Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
- Department of Pharmacology, Faculty of Pharmacy and Food Sciences, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - María José Alcaraz
- Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
- Department of Pharmacology, Faculty of Pharmacy and Food Sciences, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - María Luisa Ferrándiz
- Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
- Department of Pharmacology, Faculty of Pharmacy and Food Sciences, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
| | - María Carmen Montesinos
- Interuniversity Research Institute for Molecular Recognition and Technological Development (IDM), University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
- Department of Pharmacology, Faculty of Pharmacy and Food Sciences, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain
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Huang Y, Tao M, Li R, Liang F, Xu T, Zhong Q, Yuan Y, Wu T, Pan S, Xu X. Identification of key phenolic compounds for alleviating gouty inflammation in edible chrysanthemums based on spectrum-effect relationship analyses. Food Chem X 2023; 20:100897. [PMID: 38144783 PMCID: PMC10739853 DOI: 10.1016/j.fochx.2023.100897] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 08/26/2023] [Accepted: 09/21/2023] [Indexed: 12/26/2023] Open
Abstract
Edible chrysanthemum is a common food resource for tea and functional foods with potential benefits for human health. Studies have indicated that chrysanthemum has the potential effect on inflammatory diseases, while the effects on gouty inflammation remain underexplored. The present study aimed to investigate the anti-gout activity and characterize the active ingredients of chrysanthemums by using metabolite profiles, in vitro experiments, and spectrum-effect analysis. Results showed that 'Boju' (BJ), 'Hangbaiju' (HBJ), and 'Huaiju' (HJ) exhibited regulatory effects on monosodium urate (MSU)-induced inflammation. At the dose of 50 µg/mL, the inhibitory rates of IL-1β secretion were 24.53 %, 14.36 %, and 38.10 %, respectively. A total of 32 phenolic compounds were identified or preliminarily assigned in UPLC-Q/TOF-MS analysis. And seven phenolics related to anti-gout activity were identified by spectrum-effect relationships. According to ADME (absorption, distribution, metabolism, excretion) evaluation and experiments verification, luteolin, acacetin-7-O-glucoside, and apigenin-7-O-glucoside were critical constituents potentially associated with the reduction of inflammation in gout. Additionally, these phenolics might be suitable as quality control indicators. This study clarified the anti-gout properties of different cultivars of chrysanthemums and active compounds, providing a theoretical basis for its scientific utilization in functional foods.
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Affiliation(s)
- Yuting Huang
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Mingfang Tao
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Hubei Key Laboratory of Nutritional Quality and Safety of Agro-Products, Institute of Agricultural Quality Standards and Detection Technology, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
| | - Rong Li
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Research Institute of Agricultural Biotechnology, Jingchu University of Technology, Jingmen 448000, China
| | - Fuqiang Liang
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing 210023, China
| | - Tingting Xu
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiang Zhong
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yanan Yuan
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ting Wu
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Siyi Pan
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaoyun Xu
- Key Laboratory of Environment Correlative Dietology (Ministry of Education), Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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Xu K, Zhang L, Wang T, Ren Z, Yu T, Zhang Y, Zhao X. Untargeted metabolomics reveals dynamic changes in metabolic profiles of rat supraspinatus tendon at three different time points after diabetes induction. Front Endocrinol (Lausanne) 2023; 14:1292103. [PMID: 38053726 PMCID: PMC10694349 DOI: 10.3389/fendo.2023.1292103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/01/2023] [Indexed: 12/07/2023] Open
Abstract
Objective To investigate the dynamic changes of metabolite composition in rat supraspinatus tendons at different stages of diabetes by untargeted metabolomics analysis. Methods A total of 80 Sprague-Dawley rats were randomly divided into normal (NG, n = 20) and type 2 diabetes mellitus groups (T2DM, n = 60) and subdivided into three groups according to the duration of diabetes: T2DM-4w, T2DM-12w, and T2DM-24w groups; the duration was calculated from the time point of T2DM rat model establishment. The three comparison groups were set up in this study, T2DM-4w group vs. NG, T2DM-12w group vs. T2DM-4w group, and T2DM-24w group vs. T2DM-12w group. The metabolite profiles of supraspinatus tendon were obtained using tandem mass spectrometry. Metabolomics multivariate statistics were used for metabolic data analysis and differential metabolite (DEM) determination. The intersection of the three comparison groups' DEMs was defined as key metabolites that changed consistently in the supraspinatus tendon after diabetes induction; then, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis was performed. Results T2DM-4w group vs. NG, T2DM-12w group vs. T2DM-4w group, and T2DM-24w group vs. T2DM-12w group detected 94 (86 up-regulated and 8 down-regulated), 36 (13 up-regulated and 23 down-regulated) and 86 (24 up-regulated and 62 down-regulated) DEMs, respectively. Seven key metabolites of sustained changes in the supraspinatus tendon following induction of diabetes include D-Lactic acid, xanthine, O-acetyl-L-carnitine, isoleucylproline, propoxycarbazone, uric acid, and cytidine, which are the first identified biomarkers of the supraspinatus tendon as it progresses through the course of diabetes. The results of KEGG pathway enrichment analysis showed that the main pathway of supraspinatus metabolism affected by diabetes (p < 0.05) was purine metabolism. The results of the KEGG metabolic pathway vs. DEMs correlation network graph revealed that uric acid and xanthine play a role in more metabolic pathways. Conclusion Untargeted metabolomics revealed the dynamic changes of metabolite composition in rat supraspinatus tendons at different stages of diabetes, and the newly discovered seven metabolites, especially uric acid and xanthine, may provide novel research to elucidate the mechanism of diabetes-induced tendinopathy.
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Affiliation(s)
- Kuishuai Xu
- Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Liang Zhang
- Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Tianrui Wang
- Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zhongkai Ren
- Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Tengbo Yu
- Department of Sports Medicine, Qingdao Municipal Hospital, Qingdao, Shandong, China
| | - Yingze Zhang
- Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xia Zhao
- Department of Sports Medicine, Affiliated Hospital of Qingdao University, Qingdao, China
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Hoss IM, Pradal LDA, Leal TSDS, Bertolini GRF, Costa RM, Ribeiro LDFC. Articular mobilization promotes improvement in functional and inflammatory parameters in a gouty arthritis model. EINSTEIN-SAO PAULO 2023; 21:eAO0465. [PMID: 37909651 PMCID: PMC10586854 DOI: 10.31744/einstein_journal/2023ao0465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 06/12/2023] [Indexed: 11/03/2023] Open
Abstract
OBJECTIVE Gouty arthritis is characterized by painful inflammation due to the deposition of monosodium urate crystals in joint tissues. Despite available treatments, many patients experience ineffective management and adverse effects. This study evaluated a manual therapy protocol involving passive joint mobilization at the peak of inflammation in a gouty arthritis model using functional and inflammatory parameters. METHODS Twenty male Wistar rats, 12 weeks old, were divided into two groups (n=10 each): Gouty Arthritis and Control Groups, which were further subdivided into treated and untreated groups (n=5 each). The Gouty Arthritis Group received intraarticular knee injection of 50µL of monosodium urate crystals, while the Control Group received 50µL of phosphate buffered saline. The treatment involved a 9-minutes session of grade III joint mobilization (according to Maitland). Nociception, grip strength, and edema were evaluated before induction (EV0), 7 hours after assessment (EV1), immediately after treatment (EV2), and 1 hour after treatment (EV3). The animals were euthanized, and synovial fluid was collected to analyze leukocyte migration. RESULTS The model mimicked the signs of the Gouty Arthritis Group, with a decrease in the threshold of nociception and strength and an increase in edema and leukocyte count. The mobilization protocol significantly increased the nociceptive threshold and grip strength and reduced edema; however, it did not reverse the increase in leukocyte count. CONCLUSION Our results suggest that mobilization promotes analgesia and may modulate the inflammatory process owing to reduced edema and subtle attenuation of cell migration, which contributes to strength gain.
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Affiliation(s)
- Iranilda Moha Hoss
- Universidade Estadual do Oeste do ParanáCascavelPRBrazil Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | - Lilian de Araujo Pradal
- Universidade Estadual do Oeste do ParanáCascavelPRBrazil Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | - Taciane Stein da Silva Leal
- Universidade Estadual do Oeste do ParanáCascavelPRBrazil Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | - Gladson Ricardo Flor Bertolini
- Universidade Estadual do Oeste do ParanáCascavelPRBrazil Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
| | - Rose Meire Costa
- Universidade Estadual do Oeste do ParanáCascavelPRBrazil Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brazil.
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Linani A, Serseg T, Benarous K, Bou-Salah L, Yousfi M, Alama MN, Ashraf GM. Cupressus sempervirens L. flavonoids as potent inhibitors to xanthine oxidase: in vitro, molecular docking, ADMET and PASS studies. J Biomol Struct Dyn 2023; 41:7055-7068. [PMID: 36001586 DOI: 10.1080/07391102.2022.2114943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 08/14/2022] [Indexed: 10/15/2022]
Abstract
Excessive intake of purine-rich foods such as seafood and red meat leads to excess xanthine oxidase activity and provokes gout attacks. The aim of this paper is to evaluate in vitro and in silico, the inhibition effect of Cupressus sempervirens plant extracts (flavonoids (Cae) and alkaloids (CaK)) and its six derivative compounds on bovine xanthine oxidase (BXO). The in silico study consists of molecular docking with GOLD v4.0 based on the best PLPchem score (PLP) and prediction of biological activity with the PASS server tool. The inhibitors used were lignan (cp1), Amentoflavone (cp2), Cupressuflavone (cp3), Isocryptomerin (cp4), Hinokiflavone (cp5), and Neolignan (cp6). The in vitro results showed that CaK gives an IC50 of 3.52 ± 0.04 μg/ml. Similarly, Cae saved an IC50 of 8.46 ± 1.98 μg/ml compared with the control (2.82 ± 0.10 μg/ml). The in silico results show that cp1 was the best inhibitor model (PLP of 88.09) with approved pharmacokinetics. These findings suggest that cp1 and cp2 may offer good alternatives for the treatment of hyperuricemia; cp3 was moderate, while the others (cp4 to cp6) were considered weak inhibitors according to their PLP.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Abderahmane Linani
- Fundamental sciences laboratory, Amar Telidji University, Laghouat, Algeria
| | - Talia Serseg
- Fundamental sciences laboratory, Amar Telidji University, Laghouat, Algeria
| | - Khedidja Benarous
- Fundamental sciences laboratory, Amar Telidji University, Laghouat, Algeria
- Biology department, Amar Telidji University, Laghouat, Algeria
| | - Leila Bou-Salah
- Fundamental sciences laboratory, Amar Telidji University, Laghouat, Algeria
| | - Mohamed Yousfi
- Fundamental sciences laboratory, Amar Telidji University, Laghouat, Algeria
| | - Mohammed Nabil Alama
- Department of Cardiology, Faculty of Medicine, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Ghulam Md Ashraf
- Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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8
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Houshmandfar S, Khodadadi A, Mahmoudian-Sani MR, Nashibi R, Rashno M. Comparing the expression of MiR-223-NLRP3-IL-1β axis and serum IL-1β levels in patients with severe COVID-19 and healthy individuals. Immunobiology 2023; 228:152710. [PMID: 37478686 DOI: 10.1016/j.imbio.2023.152710] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/22/2023] [Accepted: 07/15/2023] [Indexed: 07/23/2023]
Abstract
BACKGROUND AND AIM The hyperactive nucleotide-binding domain, leucine-rich-containing family, pyrin domain-containing-3 (NLRP3) inflammasome in the course of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a key factor for cytokine storm, chronic inflammation, and mortality in infected patients. On the subject of the regulation of the NLRP3-inflammasome activation, micro-ribonucleic acid (RNA)-223 (miR-223), among the major RNA molecules, has been thus far investigated in some inflammatory diseases along with interleukin-1 beta (IL-1β) and NLRP3. Against this background, the present study aimed to compare healthy individuals and patients with severe COVID-19 with reference to the alterations in the expression of the miR-223, NLRP3, and IL-1β axis and the serum IL-1β levels. METHODS In total, 40 patients with severe COVID-19, admitted to the Infectious Ward of Razi Hospital, Ahvaz, Iran, who were homogenous in terms of age (40 years old) and gender, were selected based on the inclusion and exclusion criteria. The real-time polymerase chain reaction (RT-PCR) technique was then applied to assess the expression of the miR-223, NLRP3, and IL-1β genes, and enzyme-linked immunosorbent assay (ELISA) was then utilized to evaluate the serum IL-1β levels, using patients' blood samples. Moreover, inflammatory biochemical markers of the participants were collected and recorded RESULTS: According to the study results, the IL-1β expression was 3.9 times higher in the patients with COVID-19, compared with the control group (p = 0.0005). The NLRP3 expression was also 6.04 times greater in the infected patients, compared with the healthy individuals (p < 0.0001). On the other hand, the miR-223 expression was 5.37 times lower in the case group, compared with the controls (p = 0.04). CONCLUSION The study findings indicated the potential role of miR-223 and the dysregulation of NLRP3 inflammasome followed by IL-1β, as a regulatory factor in the pathogenesis of COVID-19, like that in other inflammatory diseases.
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Affiliation(s)
- Sheyda Houshmandfar
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ali Khodadadi
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Cancer Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad-Reza Mahmoudian-Sani
- Thalassemia and Hemoglobinopathy Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Roohangiz Nashibi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Rashno
- Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Chen YH, Chen WY, Yu CL, Tsai CY, Hsieh SC. Gouty arthritis involves impairment of autophagic degradation via cathepsin D inactivation-mediated lysosomal dysfunction that promotes apoptosis in macrophages. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166703. [PMID: 37001704 DOI: 10.1016/j.bbadis.2023.166703] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 03/03/2023] [Accepted: 03/22/2023] [Indexed: 03/31/2023]
Abstract
This study examined autophagy-lysosome pathway (ALP) perturbations in synovial monocytes/macrophages from patients with gouty arthritis (GA) and the associations of ALP perturbations with cell death. Synovial fluid mononuclear cells (SFMCs) and synovial tissues (STs) from patients with GA, as well as monosodium urate (MSU) crystal-exposed macrophages, underwent immunoblotting, quantitative polymerase chain reaction, and immunofluorescence analyses of markers linked to the ALP (microtubule-associated protein 1 light chain 3B [LC3B], p62, cathepsin D [CTSD], and lysosome-associated membrane protein 2 [LAMP2]) and cell death (caspase-3). GA STs underwent immunohistochemistry and immunofluorescence analyses to determine the distributions of LC3B-positive autophagosomes and macrophages. GA SFMCs and STs exhibited impaired autophagic degradation, indicated by elevated levels of LC3B and p62, along with CTSD upregulation and caspase-3 activation. Macrophages from GA STs exhibited significant accumulation of LC3B-positive autophagosomes. The temporal effects of MSU crystals on the ALP and the associations of these effects with cell death were investigated using a macrophage model of GA. MSU crystal-exposed macrophages exhibited early (2 h) autophagosome formation but later (6-24 h) autophagic flux impairment, demonstrated by p62 accumulation, lysosomal inhibitor failure to increase LC3B accumulation, and LC3B colocalization with p62. These macrophages exhibited autophagic flux impairment because of CTSD inactivation-mediated lysosomal dysfunction, which caused immature CTSD to accumulate within damaged LAMP2-positive lysosomes. This accumulation coincided with caspase-3-dependent cell death (24 h) that was unaffected by CTSD inhibition. These findings indicate that GA involves MSU crystal-induced impairment of autophagic degradation via CTSD inactivation-mediated lysosomal dysfunction, which promotes apoptosis in macrophages.
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Allegrini S, Garcia-Gil M, Pesi R, Camici M, Tozzi MG. The Good, the Bad and the New about Uric Acid in Cancer. Cancers (Basel) 2022; 14:cancers14194959. [PMID: 36230882 PMCID: PMC9561999 DOI: 10.3390/cancers14194959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/30/2022] [Accepted: 10/06/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The concentration of uric acid in blood is sex-, age- and diet-dependent and is maintained close to its maximal solubility, indicating that it plays some important role. Indeed, it has been demonstrated that, at physiological concentrations, uric acid is a powerful antioxidant and is a scavenger of singlet oxygen and radicals. At high intracellular concentration, uric acid has been demonstrated to act as a pro-oxidant molecule. Recently, uric acid has been reported to affect the properties of several proteins involved in metabolic regulation and signaling, and the relationship between uric acid and cancer has been extensively investigated. In this review, we present the most recent results on the positive and negative effects played by uric acid in cancer and some new findings and hypotheses about the implication of this metabolite in the pathogenesis of several diseases such as metabolic syndrome, diabetes, and inflammation, thus favoring the development of cancer. Abstract Uric acid is the final product of purine catabolism in man and apes. The serum concentration of uric acid is sex-, age- and diet-dependent and is maintained close to its maximal solubility, indicating that it plays some important role. Indeed, it has been demonstrated that, at physiological concentrations, uric acid is a powerful antioxidant, while at high intracellular concentrations, it is a pro-oxidant molecule. In this review, we describe the possible causes of uric acid accumulation or depletion and some of the metabolic and regulatory pathways it may impact. Particular attention has been given to fructose, which, because of the complex correlation between carbohydrate and nucleotide metabolism, causes uric acid accumulation. We also present recent results on the positive and negative effects played by uric acid in cancer and some new findings and hypotheses about the implication of this metabolite in a variety of signaling pathways, which can play a role in the pathogenesis of diseases such as metabolic syndrome, diabetes, and inflammation, thus favoring the development of cancer. The loss of uricase in Homo sapiens and great apes, although exposing these species to the potentially adverse effects of uric acid, appears to be associated with evolutionary advantages.
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Affiliation(s)
- Simone Allegrini
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health”, Università di Pisa, 56126 Pisa, Italy
- CISUP, Centro per L’Integrazione della Strumentazione dell’Università di Pisa, 56127 Pisa, Italy
- Correspondence:
| | - Mercedes Garcia-Gil
- Interdepartmental Research Center Nutrafood “Nutraceuticals and Food for Health”, Università di Pisa, 56126 Pisa, Italy
- CISUP, Centro per L’Integrazione della Strumentazione dell’Università di Pisa, 56127 Pisa, Italy
- Unità di Fisiologia Generale, Dipartimento di Biologia, Università di Pisa, Via San Zeno 31, 56127 Pisa, Italy
| | - Rossana Pesi
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy
| | - Marcella Camici
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy
| | - Maria Grazia Tozzi
- Unità di Biochimica, Dipartimento di Biologia, Università di Pisa, Via San Zeno 51, 56127 Pisa, Italy
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11
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Zhou Y, Li W, Huang Y. A low serum uric acid concentration predicts a poor prognosis in adult patients with candidemia. Open Med (Wars) 2022; 17:1077-1083. [PMID: 35794998 PMCID: PMC9186511 DOI: 10.1515/med-2022-0511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/12/2022] [Accepted: 05/25/2022] [Indexed: 11/18/2022] Open
Abstract
This study aimed to determine the relation of serum uric acid (UA) level with outcomes in adults with candidemia. Medical records of patients with candidemia treated from 2014 to 2017 were retrospectively reviewed. Patients were age- and sex-matched with healthy control subjects. The associations of UA and cystatin C (CysC) levels with diagnosis and prognosis of candidemia were determined. Sixty-four patients with candidemia (13 females and 51 males; mean age 48.5 years) and 64 matched control subjects were included. The median UA level of patients with candidemia was 255 μmol/L (range, 158–395 μmol/L), and of healthy controls was 398 μmol/L (range, 345–450 μmol/L) (P < 0.001). The median CysC level of patients with candidemia was 1.07 mg/L (range, 0.89–1.59 mg/L), and of the healthy controls was 0.82 mg/L (range, 0.74–0.95 mg/L) (P < 0.001). Patients with a favorable prognosis had significantly higher serum UA levels than those with a poor prognosis (181 μmol/L vs 344 μmol/L; P = 0.001). It was indicated that the estimated OR for UA was significantly > 1 (P = 0.009), and the AUC was 0.734. In summary, a lower serum UA level is associated with a diagnosis of candidemia, and a poor outcome.
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Affiliation(s)
- Yuqi Zhou
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, P.R. China
| | - Wenjuan Li
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, P.R. China
| | - Yubo Huang
- Department of Pulmonary and Critical Care Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, 600 Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, P.R. China
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12
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Wang CC, Li YL, Chiu PY, Chen C, Chen HC, Chen FA. Protective effects of corni fructus extract in mice with potassium oxonate-induced hyperuricemia. J Vet Med Sci 2022; 84:1134-1141. [PMID: 35781421 PMCID: PMC9412062 DOI: 10.1292/jvms.21-0671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Corni fructus is consumed as food and herbal medicine in Chinese culture. Studies have
revealed that corni fructus exhibits potent antioxidant activity; however, few studies
have investigated the ability of corni fructus to lower uric acid concentrations. In this
study, the xanthine oxidase (XO) inhibition and uric acid–lowering effect of corni fructus
extract (CFE) were evaluated in mice with potassium oxonate–induced hyperuricemia.
Hyperuricemia is a chronic disease prevalent worldwide and is associated with high
recurrence rates. In addition, drugs used to treat hyperuricemia induce side effects that
discourage patient compliance. Hyperuricemia induces metabolic imbalances resulting in
accumulative uric acid deposition in the joints and soft tissues. Hyperuricemia not only
induces gout but also interrupts hepatic and renal function, thereby trigging severe
inflammation and various complications, including obesity, nonalcoholic fatty liver
disease, diabetes, and metabolic diseases. In this study, the ethyl acetate fraction (EAF)
of CFE resulted in yields of antioxidant photochemical components significantly higher
than those of CFEs formed using other substances. The EAF of CFE exhibited high free
radical scavenging activity and XO inhibition and effectively lowered uric acid
concentrations in the animal model of chemically induced hyperuricemia. The results of
this study can serve as a reference for the prevention of preclinical gout as well as for
functional food research.
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Affiliation(s)
| | - You-Liang Li
- Department of Pharmacy and Master Program, Tajen University
| | - Po-Yen Chiu
- Department of Pharmacy and Master Program, Tajen University
| | - Chun Chen
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University
| | - Hung-Che Chen
- Department of Pharmacy and Master Program, Tajen University
| | - Fu-An Chen
- Department of Pharmacy and Master Program, Tajen University
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13
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Yang K, Cao F, Xue Y, Tao L, Zhu Y. Three Classes of Antioxidant Defense Systems and the Development of Postmenopausal Osteoporosis. Front Physiol 2022; 13:840293. [PMID: 35309045 PMCID: PMC8927967 DOI: 10.3389/fphys.2022.840293] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/25/2022] [Indexed: 01/04/2023] Open
Abstract
Osteoporosis is a common bone imbalance disease that threatens the health of postmenopausal women. Estrogen deficiency accelerates the aging of women. Oxidative stress damage is regarded as the main pathogenesis of postmenopausal osteoporosis. The accumulation of reactive oxygen species in the bone microenvironment plays a role in osteoblast and osteoclast apoptosis. Improving the oxidative state is essential for the prevention and treatment of postmenopausal osteoporosis. There are three classes of antioxidant defense systems in the body to eliminate free radicals and peroxides including antioxidant substances, antioxidant enzymes, and repair enzymes. In our review, we demonstrated the mechanism of antioxidants and their effect on bone metabolism in detail. We concluded that glutathione/oxidized glutathione (GSH/GSSG) conversion involved the PI3K/Akt-Nrf2/HO-1 signaling pathway and that the antioxidant enzyme-mediated mitochondrial apoptosis pathway of osteoblasts was necessary for the development of postmenopausal osteoporosis. Since the current therapeutic effects of targeting bone cells are not significant, improving the systemic peroxidation state and then regulating bone homeostasis will be a new method for the treatment of postmenopausal osteoporosis.
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Affiliation(s)
- Keda Yang
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
| | - Fangming Cao
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
| | - Yuchuan Xue
- The First Department of Clinical Medicine, China Medical University, Shenyang, China
| | - Lin Tao
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
- *Correspondence: Lin Tao,
| | - Yue Zhu
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
- Yue Zhu,
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14
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Jan RL, Ho CH, Wang JJ, Tseng SH, Chang YS. Associations between Sjögren Syndrome, Sociodemographic Factors, Comorbid Conditions, and Scleritis in a Taiwanese Population-Based Study. J Pers Med 2022; 12:jpm12010105. [PMID: 35055420 PMCID: PMC8778815 DOI: 10.3390/jpm12010105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/24/2021] [Accepted: 01/11/2022] [Indexed: 01/19/2023] Open
Abstract
This nationwide, population-based, retrospective, matched case–control study included 111,960 newly diagnosed patients with scleritis who were identified by the International Classification of Diseases, Ninth Revision, Clinical Modification code 379.0, selected from the Taiwan National Health Insurance Research Database. Demographic characteristics, Sjögren syndrome, and comorbid conditions within 1 year before the scleritis diagnosis were examined using univariate logistic regression analyses, and a paired t-test was used for continuous variables. Adjusted logistic regression was used to compare the prognosis odds ratio (OR) of the patients with scleritis with the controls. After adjustment for confounders, patients with Sjögren syndrome were remarkably more likely to have scleritis than the controls (OR = 33.53, 95% confidence interval (CI) = 27.43–40.97, p < 0.001). Other conditions found to have increased odds of scleritis included post ocular pterygium, glaucoma, and scleral surgery (OR = 4.01, 95% CI = 3.64–4.43; OR = 3.16, 95% CI = 2.24–4.47; OR = 6.83, 95% CI = 5.34–8.74, respectively); systemic infections, such as syphilis, tuberculosis, and a human herpes viral infection (OR = 4.01, 95% CI = 2.93–5.50; OR = 2.24, 95% CI = 1.94–2.58; OR = 8.54, 95% CI = 8.07–9.03, respectively); and systemic diseases, such as rheumatoid arthritis, granulomatous vasculitis, systemic lupus erythematosus, ankylosing spondylitis, and gout (OR = 2.93, 95% CI = 2.66–3.23; OR = 7.37, 95% CI = 3.91–13.88; OR = 3.18, 95% CI = 2.63–3.85; OR = 5.57, 95% CI = 4.99–6.22; OR = 2.84, 95% CI = 2.72–2.96, respectively). The results strongly support an association between Sjögren syndrome, post ocular surgery, systemic infection disease, systemic autoimmune disease, and scleritis.
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Affiliation(s)
- Ren-Long Jan
- Department of Pediatrics, Chi Mei Medical Center, Liouying, Tainan 736, Taiwan;
- Graduate Institute of Medical Sciences, College of Health Sciences, Chang Jung Christian University, Tainan 711, Taiwan
| | - Chung-Han Ho
- Department of Medical Research, Chi Mei Medical Center, Tainan 710, Taiwan; (C.-H.H.); (J.-J.W.)
- Department of Hospital and Health Care Administration, Chia Nan University of Pharmacy and Science, Tainan 717, Taiwan
| | - Jhi-Joung Wang
- Department of Medical Research, Chi Mei Medical Center, Tainan 710, Taiwan; (C.-H.H.); (J.-J.W.)
- Department of Anesthesiology, Chi Mei Medical Center, Tainan 710, Taiwan
| | - Sung-Huei Tseng
- Department of Ophthalmology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan;
- Department of Ophthalmology, Chi Mei Medical Center, Tainan 710, Taiwan
| | - Yuh-Shin Chang
- Graduate Institute of Medical Sciences, College of Health Sciences, Chang Jung Christian University, Tainan 711, Taiwan
- Department of Ophthalmology, Chi Mei Medical Center, Tainan 710, Taiwan
- Correspondence: ; Tel.: +886-6-281-2811 (ext. 55075)
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15
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Tripolino C, Ciaffi J, Ruscitti P, Giacomelli R, Meliconi R, Ursini F. Hyperuricemia in Psoriatic Arthritis: Epidemiology, Pathophysiology, and Clinical Implications. Front Med (Lausanne) 2021; 8:737573. [PMID: 34631755 PMCID: PMC8492931 DOI: 10.3389/fmed.2021.737573] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/27/2021] [Indexed: 01/02/2023] Open
Abstract
Psoriatic arthritis (PsA) represents the articular component of the systemic psoriatic disease and the extra-cutaneous disorder most frequently found in patients with psoriasis. Besides the articular involvement, PsA is associated with several metabolic abnormalities such as insulin resistance, hypertension, diabetes and hyperuricemia. Uric acid is the final product of purine metabolism and the etiological substrate of gout. Accumulating evidence highlights the emerging role of hyperuricemia as a major cardiovascular risk factor. Moreover, different studies evaluated the interplay between hyperuricemia and psoriatic disease, suggesting that individuals affected by psoriasis or PsA might present higher serum levels of uric acid and that hyperuricemia might affect severity of clinical manifestations and degree of inflammation in PsA patients. In this review, we focus on the bidirectional relationship between uric acid and PsA, analyzing how uric acid may be involved in the pathogenesis of psoriasis/PsA and how clinical manifestations of PsA and inflammatory mediators are affected by uric acid concentrations. Finally, the effects of anti-rheumatic drugs on uric acid levels and the potential benefit of urate-lowering therapies on psoriasis and PsA were summarized.
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Affiliation(s)
- Cesare Tripolino
- Geriatric Medicine Unit, Department of Medical Functional Area, "San Giovanni di Dio" Hospital, Crotone, Italy
| | - Jacopo Ciaffi
- Medicine and Rheumatology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli (IOR), Bologna, Italy
| | - Piero Ruscitti
- Rheumatology Unit, Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Roberto Giacomelli
- Unit of Allergology, Immunology, Rheumatology, Department of Medicine, Università Campus Bio-Medico Di Roma, Rome, Italy
| | - Riccardo Meliconi
- Medicine and Rheumatology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli (IOR), Bologna, Italy.,Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Francesco Ursini
- Medicine and Rheumatology Unit, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Ortopedico Rizzoli (IOR), Bologna, Italy.,Department of Biomedical and Neuromotor Sciences (DIBINEM), Alma Mater Studiorum University of Bologna, Bologna, Italy
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16
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Abstract
PURPOSE OF REVIEW Neutrophils are the most numerous and the first responder cells of the innate immune system. Evidence suggests that neutrophils may play an essential role in the pathogenesis of multiple systemic diseases. A novel mechanism of neutrophil extracellular traps (NETs) leading to breaking of self-tolerance and generation of autoimmune responses in predisposed individuals has been described in various autoimmune conditions. The purpose of the review is to identify these important mechanisms of NETs leading to autoimmunity in various rheumatic diseases. RECENT FINDINGS NETs contain histone and chromatin, which contain important autoantigens. Many autoimmune conditions are associated with increased NET-generating capacity, unique low-density granulocyte population, and impaired NET degradation leading to persistent inflammation and tissue damage. NETs can also activate other immune cells, and their components may amplify the inflammatory response by activation of complement pathways and inflammasomes. NETs can also contribute to autoantibody formation in disorders such as rheumatoid arthritis, ANCA-associated vasculitis, and systemic lupus erythematosus by providing a constant source of autoantigens. NETs can also serve as biomarkers providing insights into disease diagnosis and therapeutics. NETs seem to play a primary role in inflammatory disease pathogenesis. Identification of different NET pathogenic pathways in various rheumatic conditions could provide new insights into disease pathogenesis and therapeutic targets could be developed towards the future treatment of inflammatory autoimmune diseases.
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17
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Biasizzo M, Kopitar-Jerala N. Interplay Between NLRP3 Inflammasome and Autophagy. Front Immunol 2020; 11:591803. [PMID: 33163006 PMCID: PMC7583715 DOI: 10.3389/fimmu.2020.591803] [Citation(s) in RCA: 279] [Impact Index Per Article: 69.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022] Open
Abstract
The NLRP3 inflammasome is cytosolic multi-protein complex that induces inflammation and pyroptotic cell death in response to both pathogen (PAMPs) and endogenous activators (DAMPs). Recognition of PAMPs or DAMPs leads to formation of the inflammasome complex, which results in activation of caspase-1, followed by cleavage and release of pro-inflammatory cytokines. Excessive activation of NLRP3 inflammasome can contribute to development of inflammatory diseases and cancer. Autophagy is vital intracellular process for recycling and removal of damaged proteins and organelles, as well as destruction of intracellular pathogens. Cytosolic components are sequestered in a double-membrane vesicle-autophagosome, which then fuses with lysosome resulting in degradation of the cargo. The autophagy dysfunction can lead to diseases with hyperinflammation and excessive activation of NLRP3 inflammasome and thus acts as a major regulator of inflammasomes. Autophagic removal of NLRP3 inflammasome activators, such as intracellular DAMPs, NLRP3 inflammasome components, and cytokines can reduce inflammasome activation and inflammatory response. Likewise, inflammasome signaling pathways can regulate autophagic process necessary for balance between required host defense inflammatory response and prevention of excessive and detrimental inflammation. Autophagy has a protective role in some inflammatory diseases associated with NLRP3 inflammasome, including gouty arthritis, familial Mediterranean fever (FMF), and sepsis. Understanding the interregulation between these two essential biological processes is necessary to comprehend the biological mechanisms and designing possible treatments for multiple inflammatory diseases.
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Affiliation(s)
- Monika Biasizzo
- Department of Biochemistry, Molecular and Structural Biology, JoŽef Stefan Institute, Ljubljana, Slovenia.,Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Nataša Kopitar-Jerala
- Department of Biochemistry, Molecular and Structural Biology, JoŽef Stefan Institute, Ljubljana, Slovenia
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18
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Nayab A, Moududee SA, Shi Y, Jiang Y, Gong Q. Crystal Structure of Urate Oxidase from Bacillus Subtilis 168. CRYSTALLOGR REP+ 2020. [DOI: 10.1134/s1063774519070149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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The Paradoxical Role of Uric Acid in Osteoporosis. Nutrients 2019; 11:nu11092111. [PMID: 31491937 PMCID: PMC6769742 DOI: 10.3390/nu11092111] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 09/01/2019] [Accepted: 09/03/2019] [Indexed: 12/16/2022] Open
Abstract
Because of its high prevalence worldwide, osteoporosis is considered a serious public health concern. Many known risk factors for developing osteoporosis have been identified and are crucial if planning health care needs. Recently, an association between uric acid (UA) and bone fractures had been explored. Extracellular UA exhibits antioxidant properties by effectively scavenging free radicals in human plasma, but this benefit might be disturbed by the hydrophobic lipid layer of the cell membrane. In contrast, intracellular free oxygen radicals are produced during UA degradation, and superoxide is further enhanced by interacting with NADPH oxidase. This intracellular oxidative stress, together with inflammatory cytokines induced by UA, stimulates osteoclast bone resorption and inhibits osteoblast bone formation. UA also inhibits vitamin D production and thereby results in hyper-parathyroidism, which causes less UA excretion in the intestines and renal proximal tubules by inhibiting the urate transporter ATP-binding cassette subfamily G member 2 (ABCG2). At normal or high levels, UA is associated with a reduction in bone mineral density and protects against bone fracture. However, in hyperuricemia or gout arthritis, UA increases bone fracture risk because oxidative stress and inflammatory cytokines can increase bone resorption and decrease bone formation. Vitamin D deficiency, and consequent secondary hyperparathyroidism, can further increase bone resorption and aggravated bone loss in UA-induced osteoporosis.
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20
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Huang L, Liao J, Chen Y, Mo Z. Association between rs2188380 and the risk of breast cancer in southwest Chinese population. J Clin Lab Anal 2019; 33:e22889. [PMID: 30924556 PMCID: PMC6595373 DOI: 10.1002/jcla.22889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 12/17/2018] [Accepted: 12/29/2018] [Indexed: 01/04/2023] Open
Abstract
Background Previous studies have revealed that the single nucleotide polymorphism (SNP) rs2188380 was identified as a novel locus of gout. Interestingly, gout resulting from high serum uric acid (SUA) was also identified to be associated with the risk of breast cancer (BC). We hypothesized that maybe there was a relationship between rs2188380 and the risk of BC. Therefore, our study was conducted to investigate whether this novel gout‐related SNP (rs2188380) was associated with BC risk as well as the clinical and pathological characteristics in the southwest Chinese population. Materials and methods We performed a case‐control study including 104 breast cancer patients and 112 healthy controls to investigate whether rs2188380 is associated with BC risk in the southwest Chinese population. The genotyping was performed by the SNP scan method. General characteristics and clinicopathological characteristics of tumors were also included in the analysis. The statistical evaluations were performed using the Student t test, the chi‐square test or Fisher's exact test, and unconditional logistic regression analysis. Results The C/C genotype of rs2188380 might be related to BC risk to some extent compared with G/G genotype (OR = 9.241, 95% CI = 1.122‐76.101, P = 0.039). Furthermore, after adjusting the age, the association still existed (OR = 8.788, 95% CI = 1.063‐72.636, P = 0.044). However, no significant association was observed between rs2188380 and the clinicopathological characteristics of BC. Conclusions Our study primarily indicated that rs2188380 might have a potential association with BC risk to some extent. With a limited sample size and statistical power, further studies based on larger populations are needed to confirm the association.
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Affiliation(s)
- Lin Huang
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jinling Liao
- Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yang Chen
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zengnan Mo
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Institute of Urology and Nephrology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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21
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Rossaneis AC, Longhi-Balbinot DT, Bertozzi MM, Fattori V, Segato-Vendrameto CZ, Badaro-Garcia S, Zaninelli TH, Staurengo-Ferrari L, Borghi SM, Carvalho TT, Bussmann AJC, Gouveia FS, Lopes LGF, Casagrande R, Verri WA. [Ru(bpy) 2(NO)SO 3](PF 6), a Nitric Oxide Donating Ruthenium Complex, Reduces Gout Arthritis in Mice. Front Pharmacol 2019; 10:229. [PMID: 30914954 PMCID: PMC6423075 DOI: 10.3389/fphar.2019.00229] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 02/22/2019] [Indexed: 12/15/2022] Open
Abstract
Monosodium urate crystals (MSU) deposition induces articular inflammation known as gout. This disease is characterized by intense articular inflammation and pain by mechanisms involving the activation of the transcription factor NFκB and inflammasome resulting in the production of cytokines and oxidative stress. Despite evidence that MSU induces iNOS expression, there is no evidence on the effect of nitric oxide (NO) donors in gout. Thus, the present study evaluated the effect of the ruthenium complex donor of NO {[Ru(bpy)2(NO)SO3](PF6)} (complex I) in gout arthritis. Complex I inhibited in a dose-dependent manner MSU-induced hypersensitivity to mechanical stimulation, edema and leukocyte recruitment. These effects were corroborated by a decrease of histological inflammation score and recruitment of Lysm-eGFP+ cells. Mechanistically, complex I inhibited MSU-induced mechanical hypersensitivity and joint edema by triggering the cGMP/PKG/ATP-sensitive K (+) channels signaling pathway. Complex I inhibited MSU-induced oxidative stress and pro-inflammatory cytokine production in the knee joint. These data were supported by the observation that complex I inhibited MSU-induced NFκB activation, and IL-1β expression and production. Complex I also inhibited MSU-induced activation of pro-IL-1β processing. Concluding, the present data, to our knowledge, is the first evidence that a NO donating ruthenium complex inhibits MSU-induced articular inflammation and pain. Further, complex I targets the main physiopathological mechanisms of gout arthritis. Therefore, it is envisaged that complex I and other NO donors have therapeutic potential that deserves further investigation.
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Affiliation(s)
- Ana C Rossaneis
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Daniela T Longhi-Balbinot
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Mariana M Bertozzi
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Victor Fattori
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Carina Z Segato-Vendrameto
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Stephanie Badaro-Garcia
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Tiago H Zaninelli
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Larissa Staurengo-Ferrari
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Sergio M Borghi
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Thacyana T Carvalho
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Allan J C Bussmann
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
| | - Florêncio S Gouveia
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, Brazil
| | - Luiz G F Lopes
- Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza, Brazil
| | - Rubia Casagrande
- Department of Pharmaceutical Sciences, University Hospital (Health Science Centre), Londrina State University, Londrina, Brazil
| | - Waldiceu A Verri
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Brazil
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Chen Q, Huang K, Li L, Lin X, Ding C, Zhang J, Chen Q. Serum uric acid on admission cannot predict long-term outcome of critically ill patients: a retrospective cohort study. Ther Clin Risk Manag 2018; 14:1347-1359. [PMID: 30122934 PMCID: PMC6080869 DOI: 10.2147/tcrm.s170647] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Purpose We aimed to evaluate the association of serum uric acid on admission with long-term outcome of critically ill patients. Materials and methods We conducted a retrospective cohort study using data extracted from the Medical Information Mart for Intensive Care III database. The primary endpoint was 90-day mortality. Propensity score matching (PSM) was performed, and multivariate Cox regression analysis was used to adjust for potential confounders. Receiver operating characteristic (ROC) curves were also used to assess the mortality predictions. Results A total of 2,123 patients were included finally with a PSM cohort consisting of 556 90-day non-survivors matched 1:1 with 556 90-day survivors. No statistically significant difference of median admission uric acid was observed between the two groups (survivors 5.50 mg/dL vs non-survivors 5.60 mg/dL, p=0.536). ROC area under the curve was 0.511 (95% confidence interval [CI] 0.477-0.545), suggesting that uric acid had poor discriminative powers for predicting 90-day mortality. No significant association between uric acid and 90-day mortality was found (hazard ratio 1.00, 95% CI 0.98-1.03, p=0.6835). Conclusion Serum uric acid on intensive care unit admission failed to predict 90-day mortality of critically ill patients.
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Affiliation(s)
- Qinchang Chen
- Department of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China,
| | - Kai Huang
- Division of Vascular and Thyroid Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lingling Li
- Division of Vascular and Thyroid Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xixia Lin
- Division of Vascular and Thyroid Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Cong Ding
- Division of Vascular and Thyroid Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Junrui Zhang
- Guangzhou Institute of Standardization, Guangzhou, China
| | - Qingui Chen
- Department of Medical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China,
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Dovell F, Boffetta P. Serum uric acid and cancer mortality and incidence: a systematic review and meta-analysis. Eur J Cancer Prev 2018; 27:399-405. [DOI: 10.1097/cej.0000000000000440] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Jing W, Zhong J, Ping LJ, Yan LH. Relationship between oxidative stress and inflammation in peripheral and cerebral system of oxonate-induced hyperuricemic rats. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902017000400229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Wu Jing
- Gansu Agricultural University, China; Pulmonary Hospital of Lanzhou, China
| | - Jia Zhong
- Gansu Agricultural University, China; Pulmonary Hospital of Lanzhou, China
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Bipolar Disorder and Immune Dysfunction: Epidemiological Findings, Proposed Pathophysiology and Clinical Implications. Brain Sci 2017; 7:brainsci7110144. [PMID: 29084144 PMCID: PMC5704151 DOI: 10.3390/brainsci7110144] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 10/25/2017] [Accepted: 10/27/2017] [Indexed: 12/22/2022] Open
Abstract
Bipolar disorder (BD) is strongly associated with immune dysfunction. Replicated epidemiological studies have demonstrated that BD has high rates of inflammatory medical comorbidities, including autoimmune disorders, chronic infections, cardiovascular disease and metabolic disorders. Cytokine studies have demonstrated that BD is associated with chronic low-grade inflammation with further increases in pro-inflammatory cytokine levels during mood episodes. Several mechanisms have been identified to explain the bidirectional relationship between BD and immune dysfunction. Key mechanisms include cytokine-induced monoamine changes, increased oxidative stress, pathological microglial over-activation, hypothalamic-pituitary-adrenal (HPA) axis over-activation, alterations of the microbiome-gut-brain axis and sleep-related immune changes. The inflammatory-mood pathway presents several potential novel targets in the treatment of BD. Several proof-of-concept clinical trials have shown a positive effect of anti-inflammatory agents in the treatment of BD; however, further research is needed to determine the clinical utility of these treatments. Immune dysfunction is likely to only play a role in a subset of BD patients and as such, future clinical trials should also strive to identify which specific group(s) of BD patients may benefit from anti-inflammatory treatments.
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Gender Disparity in the Relationship between Prevalence of Thyroid Nodules and Metabolic Syndrome Components: The SHDC-CDPC Community-Based Study. Mediators Inflamm 2017; 2017:8481049. [PMID: 28607535 PMCID: PMC5457761 DOI: 10.1155/2017/8481049] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 02/20/2017] [Indexed: 12/31/2022] Open
Abstract
The study is aimed to investigate the pathogenesis underlying the increased prevalence of thyroid nodule (TN) in different levels of metabolic syndrome (MetS) components and analyze the relationships between TN and MetS components. A total of 6,798 subjects, including 2201 patients with TN, were enrolled in this study. Anthropometric, biochemical, thyroid ultrasonographic, and other metabolic parameters were all measured. There was obviously sexual difference in the prevalence of TN (males 26.0%, females 38.5%, resp.). The prevalence of TN in hyperuricemia (45.7% versus 37.4%, P = 0.001), NAFLD (41.2% versus 36.4%, P < 0.05), and MetS (41.4% versus 35.4%, P < 0.001) groups was significantly increased only in females. Insulin resistance [OR = 1.31 (1.15, 1.49)], MetS [OR = 1.18 (1.03, 1.35)], and diabetes [OR = 1.25 (1.06, 1.48)] were all independent risk factors for TN in total subjects, whereas, after stratified analysis of gender, MetS [OR = 1.29, (1.09, 1.53)] and diabetes [OR = 1.47, (1.17, 1.84)] are still strongly and independently associated with the higher risks of TN in female subjects, but not in males. Our results suggest that the components of MetS might associate with the higher risks of TN in women than in men, but further cohort study of this gender disparity in the association between TN and MetS is required.
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Ter Horst R, Jaeger M, Smeekens SP, Oosting M, Swertz MA, Li Y, Kumar V, Diavatopoulos DA, Jansen AFM, Lemmers H, Toenhake-Dijkstra H, van Herwaarden AE, Janssen M, van der Molen RG, Joosten I, Sweep FCGJ, Smit JW, Netea-Maier RT, Koenders MMJF, Xavier RJ, van der Meer JWM, Dinarello CA, Pavelka N, Wijmenga C, Notebaart RA, Joosten LAB, Netea MG. Host and Environmental Factors Influencing Individual Human Cytokine Responses. Cell 2017; 167:1111-1124.e13. [PMID: 27814508 DOI: 10.1016/j.cell.2016.10.018] [Citation(s) in RCA: 307] [Impact Index Per Article: 43.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 08/03/2016] [Accepted: 10/11/2016] [Indexed: 02/08/2023]
Abstract
Differences in susceptibility to immune-mediated diseases are determined by variability in immune responses. In three studies within the Human Functional Genomics Project, we assessed the effect of environmental and non-genetic host factors of the genetic make-up of the host and of the intestinal microbiome on the cytokine responses in humans. We analyzed the association of these factors with circulating mediators and with six cytokines after stimulation with 19 bacterial, fungal, viral, and non-microbial metabolic stimuli in 534 healthy subjects. In this first study, we show a strong impact of non-genetic host factors (e.g., age and gender) on cytokine production and circulating mediators. Additionally, annual seasonality is found to be an important environmental factor influencing cytokine production. Alpha-1-antitrypsin concentrations partially mediate the seasonality of cytokine responses, whereas the effect of vitamin D levels is limited. The complete dataset has been made publicly available as a comprehensive resource for future studies. PAPERCLIP.
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Affiliation(s)
- Rob Ter Horst
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Martin Jaeger
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Sanne P Smeekens
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Marije Oosting
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Morris A Swertz
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, Groningen 9700RB, the Netherlands
| | - Yang Li
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, Groningen 9700RB, the Netherlands
| | - Vinod Kumar
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, Groningen 9700RB, the Netherlands
| | - Dimitri A Diavatopoulos
- Laboratory of Pediatric Infectious Diseases and Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Anne F M Jansen
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Heidi Lemmers
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Helga Toenhake-Dijkstra
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Antonius E van Herwaarden
- Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Matthijs Janssen
- Department of Rheumatology, Rijnstate Hospital, Arnhem, Gelderland 6815AD, the Netherlands
| | - Renate G van der Molen
- Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Irma Joosten
- Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Fred C G J Sweep
- Department of Laboratory Medicine, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Johannes W Smit
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands; Division of Endocrinology, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Romana T Netea-Maier
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands; Division of Endocrinology, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Mieke M J F Koenders
- Elkerliek Hospital, Clinical Chemistry, Helmond, Noord-Brabant 5700AB, the Netherlands
| | - Ramnik J Xavier
- Broad Institute of Massachusetts Institute of Technology (MIT), Cambridge, MA 02142, USA; Harvard University, Cambridge, MA 02142, USA; Center for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02139, USA
| | - Jos W M van der Meer
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Charles A Dinarello
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands; Division of Medicine, University of Colorado Denver, Aurora, CO 80045, USA
| | - Norman Pavelka
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands; Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A(∗)STAR), Singapore 138648, Singapore
| | - Cisca Wijmenga
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, Groningen 9700RB, the Netherlands; Centre for Immune Regulation and Department of Immunology, University of Oslo, Oslo University Hospital, Oslo, Oslo 0027, Norway
| | - Richard A Notebaart
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands
| | - Leo A B Joosten
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands.
| | - Mihai G Netea
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Gelderland 6500HB, the Netherlands.
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El Ridi R, Tallima H. Physiological functions and pathogenic potential of uric acid: A review. J Adv Res 2017; 8:487-493. [PMID: 28748115 PMCID: PMC5512149 DOI: 10.1016/j.jare.2017.03.003] [Citation(s) in RCA: 240] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 03/11/2017] [Accepted: 03/11/2017] [Indexed: 12/13/2022] Open
Abstract
Uric acid is synthesized mainly in the liver, intestines and the vascular endothelium as the end product of an exogenous pool of purines, and endogenously from damaged, dying and dead cells, whereby nucleic acids, adenine and guanine, are degraded into uric acid. Mentioning uric acid generates dread because it is the established etiological agent of the severe, acute and chronic inflammatory arthritis, gout and is implicated in the initiation and progress of the metabolic syndrome. Yet, uric acid is the predominant anti-oxidant molecule in plasma and is necessary and sufficient for induction of type 2 immune responses. These properties may explain its protective potential in neurological and infectious diseases, mainly schistosomiasis. The pivotal protective potential of uric acid against blood-borne pathogens and neurological and autoimmune diseases is yet to be established.
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Affiliation(s)
- Rashika El Ridi
- Zoology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Hatem Tallima
- Zoology Department, Faculty of Science, Cairo University, Giza 12613, Egypt.,Department of Chemistry, School of Science and Engineering, American University in Cairo, New Cairo 11835, Cairo, Egypt
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Neutrophil Extracellular Traps and Microcrystals. J Immunol Res 2017; 2017:2896380. [PMID: 28373994 PMCID: PMC5361057 DOI: 10.1155/2017/2896380] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 02/15/2017] [Indexed: 12/11/2022] Open
Abstract
Neutrophil extracellular traps represent a fascinating mechanism by which PMNs entrap extracellular microbes. The primary purpose of this innate immune mechanism is thought to localize the infection at an early stage. Interestingly, the ability of different microcrystals to induce NET formation has been recently described. Microcrystals are insoluble crystals with a size of 1-100 micrometers that have different composition and shape. Microcrystals have it in common that they irritate phagocytes including PMNs and typically trigger an inflammatory response. This review is the first to summarize observations with regard to PMN activation and NET release induced by microcrystals. Gout-causing monosodium urate crystals, pseudogout-causing calcium pyrophosphate dehydrate crystals, cholesterol crystals associated with atherosclerosis, silicosis-causing silica crystals, and adjuvant alum crystals are discussed.
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Liu X, Chia E, Shaw O, Martin WJ, Harper J. Rapid CCL2 Release by Membrane Stromal Cells Initiates Monosodium Urate Crystal-Induced Monocyte Recruitment in a Peritoneal Model of Gouty Inflammation. EUR J INFLAMM 2017. [DOI: 10.1177/1721727x1201000201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- X. Liu
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - E. Chia
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - O.M. Shaw
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - W-J. Martin
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - J.L. Harper
- Malaghan Institute of Medical Research, Wellington, New Zealand
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Monosodium urate crystal-induced pro-interleukin-1β production is post-transcriptionally regulated via the p38 signaling pathway in human monocytes. Sci Rep 2016; 6:34533. [PMID: 27694988 PMCID: PMC5046103 DOI: 10.1038/srep34533] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 09/15/2016] [Indexed: 12/23/2022] Open
Abstract
IL-1β is a key mediator of sterile inflammation in response to endogenous particulates, a type of damage-associated molecular pattern (DAMPs) molecule derived from damaged cells. Despite the well-known role of sterile particulates such as monosodium urate (MSU) crystals as inflammasome inducers in monocytes/macrophages, little is known regarding how pro-IL-1β synthesis is induced under sterile inflammatory conditions. We provide evidence that MSU crystals post-transcriptionally induce the rapid production of pro-IL-1β in human primary monocytes. Metabolic labeling and pull-down assays for newly-synthesized proteins clearly showed that MSU crystals rapidly, within 30 min, induce the synthesis of pro-IL-1β as well as global proteins. Notably, MSU crystal-induced pro-IL-1β synthesis is selectively dependent on the p38 MAPK pathway, whereas global protein synthesis is mediated via the mTOR, ERK1/2, and p38 pathways. Furthermore, inhibition of Mnk1, a substrate of p38, blocked MSU crystal-induced pro-IL-1β synthesis downstream of eIF4E phosphorylation. In addition, the p38 MAPK pathway leading to phosphorylation of MK2 was also critical for stabilization of pro-IL-1β mRNA following MSU stimulation. Our findings demonstrate that post-transcriptional regulation via p38 MAPK plays a central role in the rapid synthesis of pro-IL-1β in response to MSU crystals, which is an essential step for IL-1β production in human monocytes.
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Krishnan S, Paredes JA, Zhou X, Kuiper RV, Hultenby K, Curbo S, Karlsson A. Long term expression of Drosophila melanogaster nucleoside kinase in thymidine kinase 2-deficient mice with no lethal effects caused by nucleotide pool imbalances. J Biol Chem 2014; 289:32835-44. [PMID: 25296759 DOI: 10.1074/jbc.m114.588921] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mitochondrial DNA depletion caused by thymidine kinase 2 (TK2) deficiency can be compensated by a nucleoside kinase from Drosophila melanogaster (Dm-dNK) in mice. We show that transgene expression of Dm-dNK in Tk2 knock-out (Tk2(-/-)) mice extended the life span of Tk2(-/-) mice from 3 weeks to at least 20 months. The Dm-dNK(+/-)Tk2(-/-) mice maintained normal mitochondrial DNA levels throughout the observation time. A significant difference in total body weight due to the reduction of subcutaneous and visceral fat in the Dm-dNK(+/-)Tk2(-/-) mice was the only visible difference compared with control mice. This indicates an effect on fat metabolism mediated through residual Tk2 deficiency because Dm-dNK expression was low in both liver and fat tissues. Dm-dNK expression led to increased dNTP pools and an increase in the catabolism of purine and pyrimidine nucleotides but these alterations did not apparently affect the mice during the 20 months of observation. In conclusion, Dm-dNK expression in the cell nucleus expanded the total dNTP pools to levels required for efficient mitochondrial DNA synthesis, thereby compensated the Tk2 deficiency, during a normal life span of the mice. The Dm-dNK(+/-) mouse serves as a model for nucleoside gene or enzyme substitutions, nucleotide imbalances, and dNTP alterations in different tissues.
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Affiliation(s)
- Shuba Krishnan
- From the Department of Laboratory Medicine, Division of Clinical Microbiology, F68, and
| | - João A Paredes
- From the Department of Laboratory Medicine, Division of Clinical Microbiology, F68, and
| | - Xiaoshan Zhou
- From the Department of Laboratory Medicine, Division of Clinical Microbiology, F68, and
| | - Raoul V Kuiper
- the Department of Laboratory Medicine, Division of Clinical Research Centre, Karolinska Institute, Karolinska University Hospital, SE-14186 Huddinge, Sweden
| | - Kjell Hultenby
- the Department of Laboratory Medicine, Division of Clinical Research Centre, Karolinska Institute, Karolinska University Hospital, SE-14186 Huddinge, Sweden
| | - Sophie Curbo
- From the Department of Laboratory Medicine, Division of Clinical Microbiology, F68, and
| | - Anna Karlsson
- From the Department of Laboratory Medicine, Division of Clinical Microbiology, F68, and
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Hyperuricemic PRP in tendon cells. BIOMED RESEARCH INTERNATIONAL 2014; 2014:926481. [PMID: 25276832 PMCID: PMC4170825 DOI: 10.1155/2014/926481] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/31/2014] [Accepted: 08/04/2014] [Indexed: 01/03/2023]
Abstract
Platelet-rich plasma (PRP) is injected within tendons to stimulate healing. Metabolic alterations such as the metabolic syndrome, diabetes, or hyperuricemia could hinder the therapeutic effect of PRP. We hypothesise that tendon cells sense high levels of uric acid and this could modify their response to PRP. Tendon cells were treated with allogeneic PRPs for 96 hours. Hyperuricemic PRP did not hinder the proliferative actions of PRP. The gene expression pattern of inflammatory molecules in response to PRP showed absence of IL-1b and COX1 and modest expression of IL6, IL8, COX2, and TGF-b1. IL8 and IL6 proteins were secreted by tendon cells treated with PRP. The synthesis of IL6 and IL8 proteins induced by PRP is decreased significantly in the presence of hyperuricemia (P = 0.017 and P = 0.012, resp.). Concerning extracellular matrix, PRP-treated tendon cells displayed high type-1 collagen, moderate type-3 collagen, decorin, and hyaluronan synthase-2 expression and modest expression of scleraxis. Hyperuricemia modified the expression pattern of extracellular matrix proteins, upregulating COL1 (P = 0.036) and COMP (P = 0.012) and downregulating HAS2 (P = 0.012). Positive correlations between TGF-b1 and type-1 collagen (R = 0.905, P = 0.002) and aggrecan (R = 0.833, P = 0.010) and negative correlations between TGF-b1 and IL6 synthesis (R = -0.857, P = 0.007) and COX2 (R = -0.810, P = 0.015) were found.
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Chen CJ, Yen JH, Chang SJ. Gout patients have an increased risk of developing most cancers, especially urological cancers. Scand J Rheumatol 2014; 43:385-90. [PMID: 24825466 DOI: 10.3109/03009742.2013.878387] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Inflammation and hyperuricaemia, which are the major characteristics of gout disease, are thought to be associated with carcinogenesis and anti-carcinogenesis, respectively. Therefore, we aimed to explore the causal effect on cancers from those with gout disease. METHOD New gout patients without a history of cancer were included from 1998 to 2000, and they had been followed up from 2001 to 2008 to observe the incidence of cancers from national outpatient records in Taiwan. RESULTS A total of 8408 male gout patients and 25,010 male controls were included by matching gout patients' age and year and month of first diagnosis during the including period. The mean ages at diagnosis were 51.03 ± 14.52 and 50.90 ± 14.45 years for gout patients and controls, respectively. The overall incidence of all cancers was 9.82 cases per 1000 person-years among gout patients compared to 4.35 cases per 1000 person-years among controls after 8 years of follow-up. The age-adjusted standardized incidence ratios (SIRs) were 2.26 [95% confidence interval (CI) 2.06-2.49], 3.31 (95% CI 2.55-4.31), 3.14 (95% CI 2.12-4.64), and 2.18 (95% CI 1.34-3.56) for all cancers, prostate cancer, bladder cancer, and renal cancer, respectively. The cumulative hazard ratios (HRs) were significantly higher in gout patients than in controls with regard to developing prostate, bladder, and renal cancers (all p < 0.001). CONCLUSIONS This study shows that gout patients are more likely to develop most cancers, especially the urological cancers: prostate, bladder, and renal cancers. The data also support the hypothesis of a link between metabolic syndrome (MetS) and cancer disorders.
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Affiliation(s)
- C-J Chen
- Division of Rheumatology, Allergy and Immunology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine , Kaohsiung , Taiwan
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Kishore BK, Zhang Y, Gevorgyan H, Kohan DE, Schiedel AC, Müller CE, Peti-Peterdi J. Cellular localization of adenine receptors in the rat kidney and their functional significance in the inner medullary collecting duct. Am J Physiol Renal Physiol 2013; 305:F1298-305. [PMID: 23986514 DOI: 10.1152/ajprenal.00254.2013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The Gi-coupled adenine receptor (AdeR) binds adenine with high affinity and potentially reduces cellular cAMP levels. Since cAMP is an important second messenger in the renal transport of water and solutes, we localized AdeR in the rat kidney. Real-time RT-PCR showed higher relative expression of AdeR mRNA in the cortex and outer medulla compared with the inner medulla. Immunoblots using a peptide-derived and affinity-purified rabbit polyclonal antibody specific for an 18-amino acid COOH-terminal sequence of rat AdeR, which we generated, detected two bands between ∼30 and 40 kDa (molecular mass of native protein: 37 kDa) in the cortex, outer medulla, and inner medulla. These bands were ablated by preadsorption of the antibody with the immunizing peptide. Immunofluorescence labeling showed expression of AdeR protein in all regions of the kidney. Immunoperoxidase revealed strong labeling of AdeR protein in the cortical vasculature, including the glomerular arterioles, and less intense labeling in the cells of the collecting duct system. Confocal immunofluorescence imaging colocalized AdeR with aquaporin-2 protein to the apical plasma membrane in the collecting duct. Functionally, adenine (10 μM) significantly decreased (P < 0.01) 1-deamino-8-d-arginine vasopressin (10 nM)-induced cAMP production in ex vivo preparations of inner medullary collecting ducts, which was reversed by PSB-08162 (20 μM, P < 0.01), a selective antagonist of AdeR. Thus, we demonstrated the expression of AdeR in the renal vasculature and collecting ducts and its functional relevance. This study may open a new avenue for the exploration of autocrine/paracrine regulation of renal vascular and tubular functions by the nucleobase adenine in health and disease.
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Affiliation(s)
- Bellamkonda K Kishore
- Nephrology Research (151M Veterans Affairs Salt Lake City Health Care System, 500 Foothill Drive, Salt Lake City, UT 84148.
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Fang ZH, Waizy H. Current concepts in the treatment of gouty arthritis. Orthop Surg 2013; 5:6-12. [PMID: 23420740 DOI: 10.1111/os.12024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Accepted: 12/04/2012] [Indexed: 01/03/2023] Open
Abstract
Gouty arthritis is an extremely painful condition that causes functional impairment. Gouty arthritis has become increasingly complex because of multiple comorbidities, iatrogenic factors and hyperuricemia that is refractory to treatment. In this review, we present a general overview of gouty arthritis including its pathophysiology, clinical presentations, diagnosis, predisposing factors and prophylactic therapy for preventing gouty arthritis flares.
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Affiliation(s)
- Zhen-hua Fang
- Department of Orthopaedics, Hannover Medical School, Hannover, Germany
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Abstract
Gout prevalence is increasing, yet management remains suboptimal. Fortunately, new insights into gout biology are permitting the development of novel, potentially more effective strategies for both gouty inflammation and urate lowering. Colchicine, a drug long used for gout, has been recently approved (for the first time ever) by the FDA, based on a new, safer dosing regimen. The recently appreciated centrality of IL-1β in acute gouty inflammation has prompted studies of agents blocking the IL-1β receptor or soluble IL-1β signaling (canakinumab, rilonacept, anakinra). Novel approaches to urate lowering have led to mechanism-based therapies such as urate synthesis inhibitors (febuxostat is already FDA approved and BCX4208 is in development), URAT-1 inhibitors promoting renal uric acid excretion (lesinurad), and recombinant uricase to directly catabolize urate (pegloticase). These new treatments do not obviate the need for lifestyle and dietary management, another area in which significant scientific and clinical progress has recently been made.
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Affiliation(s)
- Daria B Crittenden
- Crystal Diseases Study Group, Division of Rheumatology, Department of Medicine, NYU School of Medicine/NYU Langone Medical Center, New York, New York 10003, USA.
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Lai S, Zhou X. Inflammatory cells in tissues of gout patients and their correlations with comorbidities. Open Rheumatol J 2013; 7:26-31. [PMID: 23802027 PMCID: PMC3681035 DOI: 10.2174/1874312901307010026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 11/22/2022] Open
Abstract
Background: The major pathological finding of gout is the deposition of monosodium urate monohydrate (MSU) crystals with inflammatory infiltrate in the tissue. There have been many reports of in vitro analysis of inflammatory mechanism and comorbidities in gout. However, the associations of immune response cells and comorbidities of gout have not been well documented. Our studies aimed to examine the immune cell types and quantity in gout tissues, and to define the association of individual cell type with comorbidities. Methods: Surgically resected or biopsied tissues from 48 patients diagnosed as gout were used for this study. Cell count was performed on Hemotoxylin and Eosin stained sections for macrophages, plasma cells, neutrophils and on immunostained slides for T and B lymphocytes. Results: Hyperlipidemia, hypertension and diabetes mellitus were seen in 70.8%, 87.5% and 37.5% of patients, respectively. There were 35.6% and 37.8% of patients who admitted history of smoking and alcohol intake, respectively. Mean serum uric acid level was 8.5 mg/dl. The average body mass index was 30.1 kg/m2. H&E stained tissue sections demonstrated the crystalline deposits rimmed by palisading multinucleated giant cells, macrophages, neutrophils, plasma cells, T and B cells. Significant correlations between the clinical features and tissue inflammatory cells were observed in hyperlipidemia with number of T cells (p = 0.0363), hypertension with number of T cells and B cells (p = 0.0138 and 0.0033, respectively), diabetes mellitus with macrophages (p = 0.0016), and uric acid level with giant cells (p = 0.0088).
Conclusion: Comorbidity factors including hyperlipidemia, hypertension and diabetes are significantly associated with the inflammatory cells in the tissues.
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Affiliation(s)
- Syeling Lai
- Department of Pathology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA ; Department of Pathology, Michael E. DeBakey VA Medical Center, 2002 Holcombe Blvd, Houston, TX 77030, USA
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Hiroike M, Sakabe JI, Kobayashi M, Shimauchi T, Ito T, Hirakawa S, Inoh A, Tokura Y. Acicular, but not globular, titanium dioxide nanoparticles stimulate keratinocytes to produce pro-inflammatory cytokines. J Dermatol 2013; 40:357-62. [DOI: 10.1111/1346-8138.12132] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 01/29/2013] [Indexed: 11/30/2022]
Affiliation(s)
| | - Jun-ichi Sakabe
- Department of Dermatology; Hamamatsu University School of Medicine; Hamamatsu; Japan
| | - Miwa Kobayashi
- Department of Dermatology; University of Occupational and Environmental Health; Kitakyushu; Japan
| | - Takatoshi Shimauchi
- Department of Dermatology; Hamamatsu University School of Medicine; Hamamatsu; Japan
| | - Taisuke Ito
- Department of Dermatology; Hamamatsu University School of Medicine; Hamamatsu; Japan
| | - Satoshi Hirakawa
- Department of Dermatology; Hamamatsu University School of Medicine; Hamamatsu; Japan
| | | | - Yoshiki Tokura
- Department of Dermatology; Hamamatsu University School of Medicine; Hamamatsu; Japan
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Abstract
BACKGROUND AND AIMS Adenine is a uric acid pathway metabolite of no known function, and has recently been identified as a ligand for a rat G protein-coupled receptor. Due to the known role of other uric acid pathway metabolites in HSC biology, we tested the ability of adenine to induce HSC differentiation. METHODS RT-PCR was performed for adenine receptor expression in T-6 and primary rat HSC. T-6 and primary rats HSC were cultured with and without adenine, and stellation examined. Next, we examined inhibition of calcium signaling using caged IP(3). To test if adenine inhibits HSC chemotaxis T-6 cells and rat HSCs were cultured with or without adenine for 24 h in a transwell assay with PDGF as the chemoattractant. cDNA was prepared from T-6 and primary HSC for quantification of collagen 1 mRNA using real-time PCR. RESULTS We found that mRNA for the adenine receptor is expressed in T-6 cells and primary rat HSC. Also, adenine induces HSC stellation and adenine inhibits IP(3) mediated increase in cytosolic [Ca(2+)](i) and inhibits chemotaxis in T-6 cells and primary rat HSC. Adenine was also shown to up-regulate α-SMA and collagen 1, and this effect is lost by using specific si-RNA for the adenine receptor. Finally, adenine inhibits endothelin-1-induced gel contraction. CONCLUSIONS The adenine receptor is present in T-6 cells and primary rats HSC. Adenine, via the adenine receptor, induces morphological change, and cytosolic calcium signaling, inhibits chemotaxis, and up-regulates collagen 1 mRNA in HSCs.
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Fini MA, Elias A, Johnson RJ, Wright RM. Contribution of uric acid to cancer risk, recurrence, and mortality. Clin Transl Med 2012; 1:16. [PMID: 23369448 PMCID: PMC3560981 DOI: 10.1186/2001-1326-1-16] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 07/17/2012] [Indexed: 02/07/2023] Open
Abstract
Two risk factors for the development and progression of cancers that are amenable to life style modification are chronic inflammation and the metabolic syndrome. This review proposes two new targets that may mechanistically integrate inflammation and metabolic syndrome, have been largely ignored, and are known to be druggable. Recent evidence has demonstrated that elevated serum uric acid (hyperuricemia) is associated with excess cancer risk, recurrence, and mortality. Although uric acid (UA) can function as a systemic antioxidant, its pro-inflammatory properties have been postulated to play an important role in the pathogenesis of cancer. Furthermore, obesity, Type 2 Diabetes Mellitus (T2DM), and the metabolic syndrome (MetS) are also associated with excess cancer, chronic inflammation, and with hyperuricemia, suggesting that UA may represent an important link between these disorders and the development of cancer. While pharmacological modulation of hyperuricemia could in principal augment anti-cancer therapeutic strategies, some cancer cells express low intracellular levels of the enzyme Xanthine Oxidoreductase (XOR) that are associated with increased cancer aggressiveness and poor clinical outcome. Thus, systemic pharmacological inhibition of XOR may worsen clinical outcome, and specific strategies that target serum uric acid (SUA) without inhibiting tumor cell XOR may create new therapeutic opportunities for cancer associated with hyperuricemia. This review will summarize the evidence that elevated SUA may be a true risk factor for cancer incidence and mortality, and mechanisms by which UA may contribute to cancer pathogenesis will be discussed in the hope that these will identify new opportunities for cancer management.
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Affiliation(s)
- Mehdi A Fini
- Department of Medicine, Pulmonary Division and Webb-Waring Center, University of Colorado Denver, Anschutz Medical Campus, V20, Room 3105, Mail stop C-322 12850 East Montview Boulevard, Aurora, CO, 80045-0511, USA.
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Boraschi D, Costantino L, Italiani P. Interaction of nanoparticles with immunocompetent cells: nanosafety considerations. Nanomedicine (Lond) 2012; 7:121-31. [PMID: 22191781 DOI: 10.2217/nnm.11.169] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Intentional delivery of high doses of nanoparticle-based drugs or diagnostic/imaging systems sets a new scenario in safety evaluation, compared with the environmentally borne unintentional exposure to engineered nanoparticles. Intravenously administered nanomedicines immediately interact with blood components such as serum proteins, changing their own characteristics and consequently the features of their interaction with cells and tissues. Of major importance is the interaction of nanomedicines with the immune system, which is essential in the recognition and elimination of foreign dangerous agents. Nanomedicines need to avoid immune recognition in order to reach their therapeutic target and display their effect, should not trigger defensive mechanisms that can damage the body tissues (e.g., complement activation or inflammation) and should not interfere with immunocompetent cells in order to avoid promoting immune-related diseases. This review will briefly cover these issues, and propose some knowledge-based approaches for future 'safe-by-design' nanomedicines.
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Affiliation(s)
- Diana Boraschi
- Institute of Biomedical Technologies, National Research Council, Pisa, Italy.
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Terra JK, France B, Cote CK, Jenkins A, Bozue JA, Welkos SL, Bhargava R, Ho CL, Mehrabian M, Pan C, Lusis AJ, Davis RC, LeVine SM, Bradley KA. Allelic variation on murine chromosome 11 modifies host inflammatory responses and resistance to Bacillus anthracis. PLoS Pathog 2011; 7:e1002469. [PMID: 22241984 PMCID: PMC3248472 DOI: 10.1371/journal.ppat.1002469] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 11/16/2011] [Indexed: 01/23/2023] Open
Abstract
Anthrax is a potentially fatal disease resulting from infection with Bacillus anthracis. The outcome of infection is influenced by pathogen-encoded virulence factors such as lethal toxin (LT), as well as by genetic variation within the host. To identify host genes controlling susceptibility to anthrax, a library of congenic mice consisting of strains with homozygous chromosomal segments from the LT-responsive CAST/Ei strain introgressed on a LT-resistant C57BL/6 (B6) background was screened for response to LT. Three congenic strains containing CAST/Ei regions of chromosome 11 were identified that displayed a rapid inflammatory response to LT similar to, but more severe than that driven by a LT-responsive allele of the inflammasome constituent NRLP1B. Importantly, increased response to LT in congenic mice correlated with greater resistance to infection by the Sterne strain of B. anthracis. The genomic region controlling the inflammatory response to LT was mapped to 66.36–74.67 Mb on chromosome 11, a region that encodes the LT-responsive CAST/Ei allele of Nlrp1b. However, known downstream effects of NLRP1B activation, including macrophage pyroptosis, cytokine release, and leukocyte infiltration could not fully explain the response to LT or the resistance to B. anthracis Sterne in congenic mice. Further, the exacerbated response in congenic mice is inherited in a recessive manner while the Nlrp1b-mediated response to LT is dominant. Finally, congenic mice displayed increased responsiveness in a model of sepsis compared with B6 mice. In total, these data suggest that allelic variation of one or more chromosome 11 genes in addition to Nlrp1b controls the severity of host response to multiple inflammatory stimuli and contributes to resistance to B. anthracis Sterne. Expression quantitative trait locus analysis revealed 25 genes within this region as high priority candidates for contributing to the host response to LT. We show that genetic variation within an 8.3 Mb region on mouse chromosome 11 controls host response to anthrax lethal toxin (LT) and resistance to infection by the Sterne strain of Bacillus anthracis. Specifically, congenic C57BL/6 mice in which this region of chromosome 11 is derived from a genetically divergent CAST/Ei strain presented with a rapid and strong innate immune response to LT and displayed increased survival following infection with Sterne spores. CAST/Ei chromosome 11 encodes a dominant LT-responsive allele of Nlrp1b that may partially account for the severe response to LT. However, the strength of this response was attenuated in mice with only one copy of chromosome 11 derived from CAST/Ei indicating the existence of a recessive modifier of the inflammatory response to LT. In addition, congenic mice displayed a pronounced immune response using an experimental model of sepsis, indicating that one or more genes within the chromosome 11 region control host response to multiple inflammatory stimuli. Analyzing the influence of allelic variation on gene expression identified 25 genes as candidates for controlling these responses. In summary, we report a genetic model to study inflammatory responses beneficial to the host during anthrax.
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Affiliation(s)
- Jill K Terra
- Department of Microbiology, Immunology, and Molecular Genetics, University of California at Los Angeles, Los Angeles, California, United States of America
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Abstract
High uric acid (UA) levels can cause gout, urolithiasis and acute and chronic nephropathy, all of which are due to the deposit of urate crystals. There is also increasing evidence of relationships of hyperuricemia with other important disorders, including hypertension, chronic renal disease, metabolic syndrome and cardiovascular disease, as well as an increased mortality, although a causal relationship between these conditions has not been clearly established. On the other hand, low UA levels are not known to cause any disorder or disease. However, in the last few years a higher prevalence and progression of some neurological diseases have been associated with a low UA, and it is possible that they may predispose to some other disorders, mainly due to the decrease in its antioxidant activity. In this article, the known negative effects of UA are reviewed, as well as the much less-known possible positive actions, and their therapeutic implications.
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Affiliation(s)
- B Alvarez-Lario
- Sección de Reumatología, Complejo Asistencial Universitario de Burgos, Avda. del Cid 96, 09005 Burgos, Spain.
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Sunkureddi P. Gouty arthritis: understanding the disease state and management options in primary care. Adv Ther 2011; 28:748-60. [PMID: 21894471 DOI: 10.1007/s12325-011-0058-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Indexed: 12/22/2022]
Abstract
Acute gouty arthritis is an inflammatory response triggered by the release of monosodium urate crystal deposits into the joint space. The disease is associated with debilitating clinical symptoms and functional impairments as well as adverse economic and quality-of-life burdens. Because gouty arthritis is typically diagnosed and managed in the primary care setting, clinicians require a thorough knowledge of the presenting clinical features, risk factors, differential diagnoses, and treatment options for appropriate management. Although generally effective, the use of currently available therapies to control gouty arthritis is challenging because many medications used to treat comorbidities can exacerbate gouty arthritis and because current agents are associated with a number of adverse events, contraindications, or both. Based on an understanding of the underlying inflammatory pathogenesis of gouty arthritis, several new agents are being developed that may provide improved efficacy.
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Affiliation(s)
- Prashanth Sunkureddi
- University of Texas Medical Branch (UTMB), 2060 Space Park Drive, Suite 208, Nassau Bay, TX 77058, USA.
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Alten R, Gomez-Reino J, Durez P, Beaulieu A, Sebba A, Krammer G, Preiss R, Arulmani U, Widmer A, Gitton X, Kellner H. Efficacy and safety of the human anti-IL-1β monoclonal antibody canakinumab in rheumatoid arthritis: results of a 12-week, Phase II, dose-finding study. BMC Musculoskelet Disord 2011; 12:153. [PMID: 21736751 PMCID: PMC3152943 DOI: 10.1186/1471-2474-12-153] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 07/07/2011] [Indexed: 01/31/2023] Open
Abstract
Background Canakinumab is a fully human anti-interleukin IL-1beta monoclonal antibody, being investigated for the treatment of rheumatoid arthritis (RA). This multicenter, phase II, randomized, double-blind, placebo-controlled, parallel-group, dose-finding study investigated the efficacy and safety of canakinumab in patients with active RA despite ongoing therapy at stable doses of methotrexate. Methods Patients were randomized to receive one of four regimens, in addition to methotrexate, for 12 weeks: canakinumab 150 mg subcutaneously (SC) every 4 weeks (q4wk), canakinumab 300 mg SC (2 injections of 150 mg SC) every 2 weeks, a 600 mg intravenous loading dose of canakinumab followed by 300 mg SC every 2 weeks', or placebo SC every 2 weeks. Results Among 274 patients with evaluable efficacy data, the percentage of responders according to American College of Rheumatology 50 criteria (the primary endpoint, based on a 28-joint count) was significantly higher with canakinumab 150 mg SC q4wk than with placebo (26.5% vs. 11.4%, respectively; p = 0.028). Compared to placebo, this dosage of canakinumab was also associated with significantly more favorable responses at week 12 with respect to secondary endpoints including the Disease Activity Score 28, scores on the Health Assessment Questionnaire and Functional Assessment of Chronic Illness Therapy-Fatigue, swollen 28-joint count, and patient's and physician's global assessments of disease activity. No safety concerns were raised with canakinumab therapy, particularly with regard to infections. Few injection-site reactions occurred. Conclusion The addition of canakinumab 150 mg SC q4wk improves therapeutic responses among patients who have active RA despite stable treatment with methotrexate. Trial Registration (ClinicalTrials.gov identifier: NCT00784628)
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Affiliation(s)
- Rieke Alten
- Department of Internal Medicine II, Schlosspark-Klinik Teaching Hospital of the Charité, University Medicine Berlin, Heubnerweg, Berlin 14059, Germany.
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Abstract
Inflammasome activation leads to caspase-1 activation, which causes the maturation and secretion of pro-IL-1β and pro-IL-18 among other substrates. A subgroup of the NLR (nucleotide-binding domain, leucine-rich repeat containing) proteins are key mediators of the inflammasome. Studies of gene-deficient mice and cells have implicated NLR inflammasomes in a host of responses to a wide range of microbial pathogens, inflammatory diseases, cancer, and metabolic and autoimmune disorders. Determining exactly how the inflammasome is activated in these diseases and disease models remains a challenge. This review presents and integrates recent progress in the field.
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Affiliation(s)
- Beckley K Davis
- Department of Microbiology and Immunology, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, 27599, USA.
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