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Hyperuricemia

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https://www.readbyqxmd.com/read/27922586/hyperuricemia-as-a-risk-factor-for-cardiovascular-disease-clinical-review
#1
REVIEW
Álvaro Gudiño Gomezjurado
Cardiovascular diseases are one of the most important causes of morbidity and mortality worldwide. Several risk factors have been associated with the development of these pathologies. However, there is controversy about whether hyperuricemia is an independent risk factor for developing cardiovascular disease. To answer this question, we performed a recent literature review of relevant published material to assess the association of hyperuricemia with four major cardiovascular diseases: hypertension, coronary heart disease, heart failure and atrial fibrillation...
November 15, 2016: Medwave
https://www.readbyqxmd.com/read/27922051/catalysis-and-structure-of-zebrafish-urate-oxidase-provide-insights-into-the-origin-of-hyperuricemia-in-hominoids
#2
Marialaura Marchetti, Anastasia Liuzzi, Beatrice Fermi, Romina Corsini, Claudia Folli, Valentina Speranzini, Francesco Gandolfi, Stefano Bettati, Luca Ronda, Laura Cendron, Rodolfo Berni, Giuseppe Zanotti, Riccardo Percudani
Urate oxidase (Uox) catalyses the first reaction of oxidative uricolysis, a three-step enzymatic pathway that allows some animals to eliminate purine nitrogen through a water-soluble compound. Inactivation of the pathway in hominoids leads to elevated levels of sparingly soluble urate and puts humans at risk of hyperuricemia and gout. The uricolytic activities lost during evolution can be replaced by enzyme therapy. Here we report on the functional and structural characterization of Uox from zebrafish and the effects on the enzyme of the missense mutation (F216S) that preceded Uox pseudogenization in hominoids...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920866/tophaceous-gout-with-rare-involvement-of-the-patella
#3
Spencer Clark, James Markham Evans, Nicholas Armstrong, William Schnitz
Gout arthritis is an inflammatory arthritis caused by hyperuricemia from various etiologies. It is typically a polyarticular arthritis with the most common joint involved being the first metatarsophalangeal joint. We present a case of gout of the knee with characteristic magnetic resonance imaging findings and rare involvement of the patella. Radiographic findings of gout are diagnostic; however, they manifest many years after the onset of the disease process. Control of symptoms and progression of the disease is possible with correct treatment made possible by early diagnosis...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27917897/blood-borne-phagocytes-internalize-urate-microaggregates-and-prevent-intravascular-netosis-by-urate-crystals
#4
Elmar Pieterse, Ivica Jeremic, Christine Czegley, Daniela Weidner, Mona H C Biermann, Susan Veissi, Christian Maueröder, Christine Schauer, Rostyslav Bilyy, Tetiana Dumych, Markus Hoffmann, Luis E Munoz, Anders A Bengtsson, Georg Schett, Johan van der Vlag, Martin Herrmann
Hyperuricemia is strongly linked to cardiovascular complications including atherosclerosis and thrombosis. In individuals with hyperuricemia, needle-shaped monosodium urate crystals (nsMSU) frequently form within joints or urine, giving rise to gouty arthritis or renal calculi, respectively. These nsMSU are potent instigators of neutrophil extracellular trap (NET) formation. Little is known on the mechanism(s) that prevent nsMSU formation within hyperuricemic blood, which would potentially cause detrimental consequences for the host...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27916816/blueberry-consumption-affects-serum-uric-acid-concentrations-in-older-adults-in-a-sex-specific-manner
#5
Carol L Cheatham, Itzel Vazquez-Vidal, Amanda Medlin, V Saroja Voruganti
Blueberries are rich in antioxidants and may protect against disease. Uric acid accounts for about 50% of the antioxidant properties in humans. Elevated levels of serum uric acid (SUA) or hyperuricemia is a risk factor for cardiovascular disease (CVD). The aim was to determine the effect of blueberries on SUA in older adults. Participants (n = 133, 65-80 years) experiencing mild cognitive impairment (MCI) were randomized in a double-blind 6-month clinical trial to either blueberry or placebo. A reference group with no MCI received no treatment...
November 29, 2016: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/27914592/hyperuricemia-in-systemic-lupus-erythematosus-is-it-associated-with-the-neuropsychiatric-manifestations-of-the-disease
#6
Mahdi Sheikh, Shafieh Movassaghi, Mohammad Khaledi, Maryam Moghaddassi
OBJECTIVES: To assess the association between hyperuricemia and different neuropsychiatric manifestations and stroke risk factors in systematic lupus erythematosus (SLE) patients. METHODS: This study was conducted on 204 SLE patients who were admitted to a tertiary referral center. A standardized questionnaire was completed for all the participants and the medical records were reviewed regarding the occurrence of arterial or venous thrombotic events, stroke, seizure, depression, headache, psychosis, and peripheral neuropathy...
November 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/27913188/fructose-suppresses-uric-acid-excretion-to-the-intestinal-lumen-as-a-result-of-the-induction-of-oxidative-stress-by-nadph-oxidase-activation
#7
Chihiro Kaneko, Jiro Ogura, Shunichi Sasaki, Keisuke Okamoto, Masaki Kobayashi, Kaori Kuwayama, Katsuya Narumi, Ken Iseki
BACKGROUND: A high intake of fructose increases the risk for hyperuricemia. It has been reported that long-term fructose consumption suppressed renal uric acid excretion and increased serum uric acid level. However, the effect of single administration of fructose on excretion of uric acid has not been clarified. METHODS: We used male Wistar rats, which were orally administered fructose (5g/kg). Those rats were used in each experiment at 12h after administration...
November 29, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27906639/ultrasonography-in-the-diagnosis-of-asymptomatic-hyperuricemia-and-gout
#8
J G Puig, L M Beltrán, C Mejía-Chew, D Tevar, R J Torres
Sonography has detected urate deposits in 34%-42% of the patients with asymptomatic hyperuricemia. This may prompt reclassification of asymptomatic hyperuricemia into "asymptomatic gout" and consideration of urate lowering therapy (ULT) to resolve urate deposits. In patients with gout and no visible tophi, sonography has detected urate deposits in half of the patients. This may allow diagnosing "tophaceous gout" and influencing the serum urate target level, prophylaxis to avoid acute gout flares during ULT, and clinical follow-up...
December 2016: Nucleosides, Nucleotides & Nucleic Acids
https://www.readbyqxmd.com/read/27906630/evaluation-of-purine-utilization-by-lactobacillus-gasseri-strains-with-potential-to-decrease-the-absorption-of-food-derived-purines-in-the-human-intestine
#9
N Yamada, C Iwamoto, H Kano, N Yamaoka, T Fukuuchi, K Kaneko, Y Asami
It is well accepted that frequent and heavy intake of purine-rich foods causes elevation of serum uric acid levels, which is a risk factor of hyperuricemia. Reducing intestinal absorption of dietary purines may attenuate the elevation of serum uric acid levels and exacerbation of hyperuricemia. This reduction may be achieved by the ingestion of lactic acid bacteria that take up purines in the intestine. In this study, we investigated the degree of uptake and utilization of purines of three lactobacilli strains...
December 2016: Nucleosides, Nucleotides & Nucleic Acids
https://www.readbyqxmd.com/read/27900959/effect-of-vitamin-c-supplementation-on-lipid-profile-serum-uric-acid-and-ascorbic-acid-in-children-on-hemodialysis
#10
Ghada Mohamed El Mashad, Hanan M ElSayed, Nahla A Nosair
Children with end-stage renal disease (ESRD) suffer from dyslipidemia and hyperuricemia that might play a causal role in the progression of cardiovascular disease (CVD). The aim of the study is to assess the effects of Vitamin C supplementation on uric acid, ascorbic acid, and serum lipid levels among children on hemodialysis (HD). This prospective study was conducted in the pediatric nephrology unit at Menoufia University Hospital. The study included a total of 60 children with ESRD on maintenance HD therapy...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27891768/hyperuricemia-and-risk-of-nonalcoholic-fatty-liver-disease-a-meta-analysis
#11
Karn Wijarnpreecha, Panadeekarn Panjawatanan, Natasorn Lekuthai, Charat Thongprayoon, Wisit Cheungpasitporn, Patompong Ungprasert
BACKGROUND/OBJECTIVES: The association between hyperuricemia and nonalcoholic fatty liver disease (NAFLD), one of the leading causes of cirrhosis worldwide, has been demonstrated in recent epidemiologic studies. This meta-analysis was conducted to summarize all available data and to estimate the risk of NAFLD among subjects with hyperuricemia. METHODS: Comprehensive literature review was conducted using MEDLINE and EMBASE database through August 2016 to identify studies that compared the risk of NAFLD among subjects with hyperuricemia versus those with normal uric acid level...
November 28, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/27889764/high-uric-acid-activates-the-ros-ampk-pathway-impairs-cd68-expression-and-inhibits-oxldl-induced-foam-cell-formation-in-a-human-monocytic-cell-line-thp-1
#12
Chaohuan Luo, Xueke Lian, Liangli Hong, Jingfang Zou, Zhi Li, Yuzhang Zhu, Tianliang Huang, Yongneng Zhang, Yaqiu Hu, Huier Yuan, Tengfei Wen, Wanling Zhuang, Bozhi Cai, Xin Zhang, Ichiro Hisatome, Tetsuya Yamamoto, Jiexiong Huang, Jidong Cheng
BACKGROUND/AIMS: Hyperuricemia is part of the metabolic-syndrome cluster of abdominal obesity, impaired glucose tolerance, insulin resistance, dyslipidemia, and hypertension. Monocytes/macrophages are critical in the development of metabolic syndrome, including gout, obesity and atherosclerosis. However, how high uric acid (HUA) exposure affects monocyte/macrophage function remains unclear. In this study, we investigated the molecular mechanism of HUA exposure in monocytes/macrophages and its impact on oxidized low-density lipoprotein (oxLDL)-induced foam-cell formation in a human monocytic cell line, THP-1...
November 25, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27882234/dysgerminoma-developing-from-an-ectopic-ovary-in-a-patient-with-wagr-syndrome-a-case-report
#13
Rie Miura, Yoshihito Yokoyama, Tatsuhiko Shigeto, Masayuki Futagami, Hideki Mizunuma, Akira Kurose, Kazushi Tsuruga, Shinya Sasaki, Kiminori Terui, Etsuro Ito
WAGR syndrome is caused by an 11p13 deletion and includes Wilms' tumor, aniridia, genitourinary anomalies and mental retardation. We encountered a case of a dysgerminoma originating in an ectopic ovary in a woman with WAGR syndrome. Our patient was a 24-year-old nulliparous woman who was diagnosed with WAGR syndrome. The patient had undergone left nephrectomy for a Wilms' tumor and postoperative chemotherapy at the age of 7 months. She also had a history of glaucoma surgery in both eyes, and was followed up at the Department of Pediatrics for diabetes mellitus, hypertension, liver dysfunction and hyperuricemia...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27871785/hyperuricemia-is-an-independent-competing-risk-factor-for-atrial-fibrillation
#14
Masanari Kuwabara, Koichiro Niwa, Shuzo Nishihara, Yutaro Nishi, Osamu Takahashi, Kazuomi Kario, Kazuhiro Yamamoto, Takeshi Yamashita, Ichiro Hisatome
BACKGROUNDS: The relationship between serum uric acid (SUA) and atrial fibrillation (AF) remains unclear because many parameters and diseases influence AF. This study was conducted to clarify the role of hyperuricemia as an independent competing risk factor for AF in an apparently healthy general population. METHODS: We retrospectively analyzed the medical records of 90,143 Japanese subjects who underwent annual regular health check-up in St. Luke's International Hospital, Tokyo, between January 2004 and June 2010...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27863909/low-frequency-of-toothbrushing-practices-is-an-independent-risk-factor-for-diabetes-mellitus-in-male-and-dyslipidemia-in-female-a-large-scale-5-year-cohort-study-in-japan
#15
Masanari Kuwabara, Yoko Motoki, Hiroki Sato, Mizue Fujii, Kayoko Ichiura, Kazumichi Kuwabara, Yosikazu Nakamura
BACKGROUND: We previously reported the association between toothbrushing practices and diabetes mellitus (DM) and dyslipidemia (DL) in a cross-sectional study. This study was conducted to clarify whether low frequency of toothbrushing practices is an independent risk factor for DM and DL using a follow-up design. METHODS: This study was a 5-year retrospective cohort study at St. Luke's International Hospital, Tokyo, Japan. We analyzed study subjects between 30 and 85 years old in 2004, who underwent annual medical examination both in 2004 and 2009...
November 15, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27863839/antihyperuricemic-effect-of-liquiritigenin-in-potassium-oxonate-induced-hyperuricemic-rats
#16
Long Hongyan, Wu Suling, Zhu Weina, Zhang Yajie, Ruan Jie
The aim is to investigate the anti-hyperuricemic and renal protective effects of liquiritigenin in potassium oxonate-induced hyperuricemic rats. Hyperuricemia in rats was induced were induced with potassium oxonate (250mg/kg) intragastrically for 7 days, and liquiritigenin (20, 40mg/kg) and allopurinol (5mg/kg) were daily administrated to the rats orally 1h after the potassium oxonate exposure. Liquiritigenin significantly reversed the elevated productions of uric acid in serum and urine and pro-inflammation cytokines in serum and kidney, which shown that liquiritigenin has renal protective effects...
November 15, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27861714/factors-influencing-transitions-between-frailty-states-in-elderly-adults-the-progetto-veneto-anziani-longitudinal-study
#17
Caterina Trevisan, Nicola Veronese, Stefania Maggi, Giovannella Baggio, Elena Debora Toffanello, Sabina Zambon, Leonardo Sartori, Estella Musacchio, Egle Perissinotto, Gaetano Crepaldi, Enzo Manzato, Giuseppe Sergi
OBJECTIVES: To investigate frailty state transitions in a cohort of older Italian adults to identify factors exacerbating or improving frailty conditions. DESIGN: Population-based longitudinal study with mean follow-up of 4.4 years. SETTING: Community. PARTICIPANTS: Individuals enrolled in the Progetto Veneto Anziani (Pro.V.A.) (N = 2,925; n = 1,179 male, n = 1,746 female; mean age 74.4 ± 7.3). MEASUREMENTS: Frailty was identified at baseline and follow-up based on the presence of at least three Fried criteria; prefrailty was defined as the presence of one or two Fried criteria...
November 14, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27853065/comparison-of-the-renoprotective-effect-of-febuxostat-for-the-treatment-of-hyperuricemia-between-patients-with-and-without-type-2-diabetes-mellitus-a-retrospective-observational-study
#18
Hiroyuki Ito, Shinichi Antoku, Mariko Abe, Takashi Omoto, Masahiro Shinozaki, Shinya Nishio, Mizuo Mifune, Michiko Togane, Masaya Nakata, Tatsuya Yamashita
Objective The effects of febuxostat therapy on hyperuricemia in patients with and without type 2 diabetes were compared in this retrospective observational study after pair-matching using the propensity scores. Methods In total, 160 patients with hyperuricemia were studied as the treated set, and the 155 subjects in whom the administration of febuxostat was not discontinued during the observation period were investigated in the full analysis. The study subjects were divided into two groups based on the style of initiation of febuxostat: initial and switching therapy from allopurinol administration...
2016: Internal Medicine
https://www.readbyqxmd.com/read/27852903/effects-of-teriparatide-compared-with-risedronate-on-recovery-after-pertrochanteric-hip-fracture-results-of-a-randomized-active-controlled-double-blind-clinical-trial-at-26-weeks
#19
Per Aspenberg, Jorge Malouf, Umberto Tarantino, Pedro A García-Hernández, Costantino Corradini, Søren Overgaard, Jan J Stepan, Lars Borris, Eric Lespessailles, Frede Frihagen, Kyriakos Papavasiliou, Helmut Petto, José Ramón Caeiro, Fernando Marin
BACKGROUND: Osteoporosis drugs might affect fracture-healing. We therefore studied the effects of teriparatide in comparison with risedronate on recovery after pertrochanteric hip fractures. METHODS: The study was a randomized, multicenter, active-controlled, 78-week trial comparing teriparatide (20 μg/day) with risedronate (35 mg/week) initiated within 2 weeks after fixation of a low-trauma pertrochanteric hip fracture (AO/OTA 31-A1 or 31-A2). The main inclusion criteria were a bone mineral density T-score of ≤-2...
November 16, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27852432/febuxostat-hypersensitivity-another-cause-of-dress-syndrome-in-chronic-kidney-disease
#20
E Paschou, E Gavriilaki, G Papaioannou, A Tsompanakou, A Kalaitzoglou, N Sabanis
Febuxostat is a xanthine oxidase inhibitor that during the last years has successfully replaced allopurinol treatment in patients with chronic kidney disease (CKD) and hyperuricemia. Several adverse events have been observed during therapy with febuxostat. DRESS (Drug Reaction with Eosinophilia and Systemic Symptoms) syndrome induced by febuxostat has been poorly described, mainly in patient with CKD who previously developed allopurinol hypersensitivity syndrome. DRESS syndrome is characterized by manifold cutaneous reactions and systemic disorders with potential devastating consequences...
November 2016: European Annals of Allergy and Clinical Immunology
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