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https://www.readbyqxmd.com/read/28213233/silver-nanoclusters-catalyzed-luminol-chemiluminescence-for-hydrogen-peroxide-and-uric-acid-detection
#1
Yingying Sheng, Hongli Yang, Ying Wang, Lu Han, Yanjun Zhao, Aiping Fan
In the present study, four kinds of bovine serum albumin (BSA) caped silver nanoclusters (Ag NCs) were prepared using different amount of BSA as template, respectively. The diameters of the four prepared BSA-Ag NCs were all less than 4nm which were obtained using high-resolution transmission electron microscopy (HRTEM). All of the BSA-Ag NCs showed catalytic activity in luminol-H2O2 chemiluminescent (CL) reaction. It was interesting that different CL kinetic curves were obtained in different BSA-Ag NCs catalyzed CL reaction...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28205336/achieving-serum-urate-targets-in-gout-an-audit-in-a-gout-oriented-rheumatology-practice
#2
Elizabeth J M Corbett, Peta Pentony, Neil W McGill
AIM: To assess the proportion of patients with gout who achieve target serum urate levels, the drug regime required and the reasons for failing to do so. METHODS: We reviewed the files of all patients with gout who presented to a gout-oriented rheumatology practice between January 2010 and September 2014. RESULTS: Two hundred and thirty patients agreed to commence urate lowering therapy (ULT); 73% achieved their urate target, including 74% with non-tophaceous gout (target ≤ 0...
February 16, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28203093/prevention-and-treatment-of-tumor-lysis-syndrome-and-the-efficacy-and-role-of-rasburicase
#3
REVIEW
Nael Alakel, Jan Moritz Middeke, Johannes Schetelig, Martin Bornhäuser
Tumor lysis syndrome (TLS) is a potentially life-threatening condition that occurs in oncologic and hematologic patients with large tumor burden, either due to cytotoxic therapy or, less commonly, spontaneously because of massive tumor cell lysis. TLS is clinically characterized by acute renal failure, hyperuricemia, hyperkalemia, hyperphosphatemia, and hypocalcemia. While limited options are available for treating TLS, identifying patients at high risk for developing TLS and prevention in high-risk patients remain an important aspect in the treatment of cancer patients...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28197935/anti-inflammatory-effect-of-total-saponin-fraction-from-dioscorea-nipponica-makino-on-gouty-arthritis-and-its-influence-on-nalp3-inflammasome
#4
Qi Zhou, Dong-Hua Yu, Ning Zhang, Shu-Min Liu
OBJECTIVE: To investigate the mechanism of Chinese herbal medicine Dioscorea nipponica for the treatment of monosodium urate crystals-induced gouty arthritis (GA) in rats. METHODS: Sixty male Wistar rats were divided into 6 groups: normal, model, indomethacin and three total saponin (900, 300 and 100 mg/kg) groups. The liver, kidney and serum levels of lysosomal enzymes, antioxidant capacities, and inflammatory factors were measured. In addition, the mRNA and protein levels of the NALP3 inflammasome components in the mononuclear cells of rats' peripheral blood were analyzed using real-time polymerase chain reaction and Western blotting methods, respectively...
February 15, 2017: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/28194937/encapsulating-therapeutic-proteins-with-polyzwitterions-for-lower-macrophage-non-specific-uptake-and-longer-circulation-time
#5
Xiaopei Zhang, Wei Chen, Xinyuan Zhu, Yunfeng Lu
Numerous efforts have been made to promote the efficiency of protein delivery through tuning the protein surface properties such as grafting polymers on protein surface, but limited successes have been achieved and their great clinical expectation has not yet been realized. The main reason is that proteins are readily recognized as foreign materials under physiological conditions due to the genetic distance between species, leading to rapid decrease in activity and clearance by mononuclear phagocyte system (MPS)...
February 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28190989/candidate-serum-metabolite-biomarkers-for-differentiating-gastroesophageal-reflux-disease-barrett-s-esophagus-and-high-grade-dysplasia-esophageal-adenocarcinoma
#6
Matthew F Buas, Haiwei Gu, Danijel Djukovic, Jiangjiang Zhu, Lynn Onstad, Brian J Reid, Daniel Raftery, Thomas L Vaughan
INTRODUCTION/OBJECTIVES: Incidence of esophageal adenocarcinoma (EA), an often fatal cancer, has increased sharply over recent decades. Several important risk factors (reflux, obesity, smoking) have been identified for EA and its precursor, Barrett's esophagus (BE), but a key challenge remains identifying individuals at highest risk, since most with reflux do not develop BE, and most with BE do not progress to cancer. Metabolomics represents an emerging approach for identifying novel biomarkers associated with cancer development...
March 2017: Metabolomics: Official Journal of the Metabolomic Society
https://www.readbyqxmd.com/read/28190873/the-role-of-uric-acid-in-hypertension-of-adolescents-prehypertension-and-salt-sensitivity-of-blood-pressure
#7
Yang Wang, Jia-Wen Hu, Yong-Bo Lv, Chao Chu, Ke-Ke Wang, Wen-Ling Zheng, Yu-Meng Cao, Zu-Yi Yuan, Jian-Jun Mu
Uric acid is the end product of purine metabolism. Metabolic disorders of uric acid are associated with many disease states. Substantial evidence suggests the possible role of uric acid as a mediator of high blood pressure. Elevated uric acid is closely associated with new onset essential hypertension in adolescents and prehypertension; and urate-lowering agents can significantly improve these early stages of hypertension. Uric acid also influences salt sensitivity of blood pressure through two phases. Local renin-angiotensin-aldosterone system activation initiates renal damage, arteriolopathy, and endothelium dysfunction, which is followed by the dysregulation of sodium homeostasis, thereby leading to increased salt sensitivity...
February 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28178975/evaluation-of-dogs-with-genetic-hyperuricosuria-and-urate-urolithiasis-consuming-a-purine-restricted-diet-a-pilot-study
#8
Jodi L Westropp, Jennifer A Larsen, Eric G Johnson, Dannika Bannasch, Andrea J Fascetti, Vincent Biourge, Yann Queau
BACKGROUND: Urate urolithiasis is a common problem in breed homozygous for the mutation that results in hyperuricosuria. Low purine diets have been recommended to reduce purine intake in these dogs. METHODS: A higher protein, purine restricted diet with water added was evaluated in dogs with genetic hyperuricosuria and a history of clinical urate urolithiasis over a one year time period. Dogs were evaluated at baseline and 2, 6, and 12 months after initiating the test diet...
February 8, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28167912/c5a-regulates-il-1%C3%AE-production-and-leukocyte-recruitment-in-a-murine-model-of-monosodium-urate-crystal-induced-peritonitis
#9
Hanif J Khameneh, Adrian W S Ho, Federica Laudisi, Heidi Derks, Matheswaran Kandasamy, Baalasubramanian Sivasankar, Gim Gee Teng, Alessandra Mortellaro
Gouty arthritis results from the generation of monosodium urate (MSU) crystals within joints. These MSU crystals elicit acute inflammation characterized by massive infiltration of neutrophils and monocytes that are mobilized by the pro-inflammatory cytokine IL-1β. MSU crystals also activate the complement system, which regulates the inflammatory response; however, it is unclear whether or how MSU-mediated complement activation is linked to IL-1β release in vivo, and the various roles that might be played by individual components of the complement cascade...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28163535/lesinurad-a-significant-advancement-or-just-another-addition-to-existing-therapies-of-gout
#10
REVIEW
Ajay Gupta, Pramod Kumar Sharma, Arup Kumar Misra, Surjit Singh
Gout is a metabolic disorder that usually presents as recurrent episodes of acute arthritis due to deposition of crystals in joints and cartilages. Despite the availability of several drugs for gout, its management is still less than adequate. There is always a search for newer, safer, and more potent urate-lowering therapies for treating patients inadequately controlled with available drugs. Lesinurad in combination with a xanthine oxidase inhibitor provides an effective mode of therapy in the management of hyperuricemia associated with gout...
October 2016: Journal of Pharmacology & Pharmacotherapeutics
https://www.readbyqxmd.com/read/28155600/green-tea-camellia-sinensis-protects-against-arsenic-neurotoxicity-via-antioxidative-mechanism-and-activation-of-superoxide-dismutase-activity
#11
Smarajit Maiti, Nirmallya Acharyya, Tamal K Ghosh, Sk Sajed Ali, Emili Manna, Aarifa Nazmeen, Nirmalya K Sinha
BACKGROUND: Chronic arsenic-exposure even at a low-dose results in the neural impairment and motor/cognitive dysfunction. However, several preventive approaches are made mainly against hepatic/gastrointestinal damages. Only a few investigations postulate therapeutic strategies for neural anomalies. Here, the protective role of Green tea (Camellia sinensis or CS; 10mg/ml aqueous) has been evaluated against arsenic-induced (0.6ppm/100g bw/28 days) cerebral/cerebellar tissue degeneration, oxidative-threats and neurotransmitter deregulation in female rats...
February 1, 2017: Central Nervous System Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28148699/serum-uric-acid-and-the-risk-of-incident-and-recurrent-gout-a-systematic-review
#12
Aki Shiozawa, Shelagh M Szabo, Anna Bolzani, Antoinette Cheung, Hyon K Choi
OBJECTIVE: Lowering serum uric acid (SUA) levels can essentially cure gout; however, this is not widely practiced. To summarize epidemiologic evidence related to this causal link, we conducted a systematic review of the published literature reporting the association between SUA level and incident and recurrent gout (i.e., gout flares). METHODS: We systematically searched Medline, EMBASE, and the Cochrane Database of Systematic Reviews using separate search strategies for incident gout and recurrent gout...
February 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28148582/gout-a-guide-for-the-general-and-acute-physicians
#13
Abhishek Abhishek, Edward Roddy, Michael Doherty
Gout is the most prevalent inflammatory arthritis and affects 2.5% of the general population in the UK. It is also the only arthritis that has the potential to be cured with safe, inexpensive and well tolerated urate-lowering treatments, which reduce serum uric acid by either inhibiting xanthine oxidase - eg allopurinol, febuxostat - or by increasing the renal excretion of uric acid. Of these, xanthine oxidase inhibitors are used first line and are effective in 'curing' gout in the vast majority of patients...
February 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28147282/sr-b1-is-a-silica-receptor-that-mediates-canonical-inflammasome-activation
#14
Misato Tsugita, Nobuyuki Morimoto, Manabu Tashiro, Kengo Kinoshita, Masafumi Nakayama
The inhalation of silica dust is associated with fibrosis and lung cancer, which are triggered by macrophage inflammatory responses; however, how macrophages recognize silica remains largely unknown. Here, we identify by functional expression cloning the class B scavenger receptor SR-B1 as a silica receptor. Through an extracellular α-helix, both mouse and human SR-B1 specifically recognized amorphous and crystalline silica, but not titanium dioxide nanoparticles, latex nanoparticles, or monosodium urate crystals, although all particles exhibited negative surface potentials...
January 31, 2017: Cell Reports
https://www.readbyqxmd.com/read/28137404/relevant-aspects-of-imaging-in-the-diagnosis-and-management-of-gout
#15
Eloy De Avila Fernandes, Samuel Brighenti Bergamaschi, Tatiane Cantarelli Rodrigues, Gustavo Coelho Dias, Ralff Malmann, Germano Martins Ramos, Soraya Silveira Monteiro
Gout is an inflammatory arthritis characterized by the deposition of monosodium urate crystals in the synovial membrane, articular cartilage and periarticular tissues leading to inflammation. Men are more commonly affected, mainly after the 5th decade of life. Its incidence has been growing with the population aging. In the majority of the cases, the diagnosis is made by clinical criteria and synovial fluid analysis, in search for monosodium urate crystals. Nonetheless, gout may sometimes have atypical presentations, complicating the diagnosis...
January 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28122760/the-unclosing-premature-mortality-gap-in-gout-a-general-population-based-study
#16
Mark C Fisher, Sharan K Rai, Na Lu, Yuqing Zhang, Hyon K Choi
OBJECTIVE: Gout, the most common inflammatory arthritis, is associated with premature mortality. Whether this mortality gap has improved over time, as observed in rheumatoid arthritis (RA), is unknown. METHODS: Using an electronic medical record database representative of the UK general population, we identified incident gout cases and controls between 1999 and 2014. The gout cohort was divided based on year of diagnosis into early (1999-2006) and late (2007-2014) cohorts...
January 25, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28118526/gout-self-management-in-african-american-veterans-a-qualitative-exploration-of-challenges-and-solutions-from-patients-perspectives
#17
Jasvinder A Singh, Ivan Herbey, Aseem Bharat, Janet E Dinnella, Sally Pullman-Mooar, Seth Eisen, Nataliya Ivankova
OBJECTIVE: To explore gout self-management and associated challenges and solutions in African-Americans. METHODS: We conducted semi-structured interviews with 35 African-Americans veterans with gout, who received healthcare at Birmingham or Philadelphia Veterans Affairs (VA) medical centers, had filled urate-lowering therapy (ULT; most commonly allopurinol) for at least 6 months and had ULT a medication possession ratio ≥80%. The interview protocol was constructed to explore key concepts related to gout self-management, including: initial diagnosis of gout, beginning medical care for gout, the course of the gout, ULT medication adherence, dietary strategies, comorbidity and side effects, and social support...
January 24, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28117388/identification-of-key-residues-for-urate-specific-transport-in-human-glucose-transporter-9-hslc2a9
#18
Wentong Long, Rashmi Panigrahi, Pankaj Panwar, Kenneth Wong, Debbie O Neill, Xing-Zhen Chen, M Joanne Lemieux, Chris I Cheeseman
Human glucose transporter 9 (hSLC2A9) is critical in human urate homeostasis, for which very small deviations can lead to chronic or acute metabolic disorders. Human SLC2A9 is unique in that it transports hexoses as well as the organic anion, urate. This ability is in contrast to other homologous sugar transporters such as glucose transporters 1 and 5 (SLC2A1 &SLC2A5) and the xylose transporter (XylE), despite the fact that these transporters have similar protein structures. Our in silico substrate docking study has revealed that urate and fructose bind within the same binding pocket in hSLC2A9, yet with distinct orientations, and allowed us to identify novel residues for urate binding...
January 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28107415/serum-uric-acid-and-progression-of-kidney-disease-a-longitudinal-analysis-and-mini-review
#19
Ching-Wei Tsai, Shih-Yi Lin, Chin-Chi Kuo, Chiu-Ching Huang
BACKGROUND: Increasing evidence supports the association between hyperuricemia and incident chronic kidney disease (CKD); however, there are conflicting data regarding the role of hyperuricemia in the progression of CKD. This study retrospectively assessed the longitudinal association between uric acid (UA) level and CKD progression in a Chinese population lived in Taiwan. METHODS: Patients with physician diagnosis of hyperuricemia or receiving urate-lowering therapy between 2003 and 2005 were identified in the electronic medical records (EMR) of a tertiary medical center and were followed up until December 31, 2011...
2017: PloS One
https://www.readbyqxmd.com/read/28104163/hyperuricemia-and-acute-renal-failure-in-renal-transplant-recipients-treated-with-high-dose-mizoribine
#20
K Akioka, T Ishikawa, M Osaka, Y Kadotani, K Okugawa, K Nakano, Y Osaka, K Tsuchiya, H Sako
BACKGROUND: Hyperuricemia is a common adverse event frequently found in renal transplant recipients with mizoribine (MZ). Hyperuricemia itself will be a cause of renal dysfunction, and renal dysfunction also will be a cause of hyperuricemia simultaneously. This study investigates frequency of hyperuricemia and renal failure in renal transplant recipients treated with high-dose MZ. PATIENTS AND METHODS: From December 2007 to October 2015, there was a total of 32 living related renal transplant recipients treated with high-dose MZ...
January 2017: Transplantation Proceedings
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