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https://www.readbyqxmd.com/read/28342714/higher-uric-acid-serum-levels-are-associated-with-better-muscle-function-in-the-oldest-old-results-from-the-mugello-study
#1
R Molino-Lova, F Sofi, G Pasquini, F Vannetti, S Del Ry, C Vassalle, M Clerici, S Sorbi, C Macchi
BACKGROUND: Sarcopenia is the progressive loss of muscle mass and strength that occurs with advancing age and plays a pivotal role in the causal pathway leading to frailty, disability and, eventually, to death among older persons. As oxidative damage of muscle proteins has been shown to be a relevant contributory factor, in this study we hypothesized that uric acid (UA), a powerful endogenous antioxidant, might exert a protective effect on muscle function in the oldest old and we tested our hypothesis in a group of nonagenarians who participated in the Mugello Study...
March 22, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28340071/variable-potassium-concentrations-which-is-right-and-which-is-wrong
#2
Talent Theparee, Robert C Benirschke, Hong-Kee Lee
Reverse pseudohyperkalemia is a term used to describe in vitro, falsely elevated potassium concentrations in plasma specimens that occur in association with extreme leukocytosis and are commonly associated with hematologic malignant neoplasms. Tumor lysis syndrome is an in vivo lysis of tumor cells that leads to elevated levels of potassium, uric acid, phosphate, and lactate dehydrogenase, as well as decreased calcium concentrations. Herein, we report a case of a 66-year-old Caucasian man with stage IV mantle-cell lymphoma who has elevated levels of potassium, uric acid, and phosphorus, as well as a white blood cell (WBC) count greater than 100,000 cells per mm3...
March 6, 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/28338917/association-between-serum-levels-of-uric-acid-and-blood-pressure-tracking-in-childhood
#3
Bohyun Park, Hye Ah Lee, Sung Hee Lee, Bo Mi Park, Eun Ae Park, Hae Soon Kim, Su Jin Cho, Hyesook Park
BACKGROUND: Recent studies suggest that high levels of serum uric acid of very early life are a result of the in-utero environment and may lead to elevated blood pressure (BP) in adulthood. However, serum uric acid levels can change throughout life. We investigated the effect of serum uric acid levels in childhood on the BP tracking and analysed BP according to changes in serum uric acid levels in early life. METHODS: A total of 449 children from the Ewha Birth and Growth Cohort study underwent at least 2 follow-up examinations...
March 14, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28337704/analysis-of-traditional-and-emerging-risk-factors-in-premenopausal-women-with-coronary-artery-disease-a-pilot-scale-study-from-north-india
#4
Rajesh Vijayvergiya, Divya Kapoor, Ajay Aggarwal, Sonal Sangwan, Vanita Suri, Veena Dhawan
Premenopausal women are known to have less heart disease than their menopausal counterparts and men. However, there is a rising prevalence of coronary artery disease (CAD) in premenopausal females, which necessitates determination of risk factors that negate the effects of hormonal protection. There are few studies describing the prevalence of traditional and emerging risk factors in premenopausal women with CAD. Thus, our objective was to explore the prevalence of traditional and emerging risk factors and features of coronary lesions in premenopausal women with CAD in an Indian population...
March 23, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28337250/podocyte-injury-and-albuminuria-in-experimental-hyperuricemic-model-rats
#5
Shinichiro Asakawa, Shigeru Shibata, Chikayuki Morimoto, Takeshi Shiraishi, Takashi Nakamura, Yoshifuru Tamura, Takanori Kumagai, Makoto Hosoyamada, Shunya Uchida
Although hyperuricemia is shown to accelerate chronic kidney disease, the mechanisms remain unclear. Accumulating studies also indicate that uric acid has both pro- and antioxidant properties. We postulated that hyperuricemia impairs the function of glomerular podocytes, resulting in albuminuria. Hyperuricemic model was induced by oral administration of 2% oxonic acid, a uricase inhibitor. Oxonic acid caused a twofold increase in serum uric acid levels at 8 weeks when compared to control animals. Hyperuricemia in this model was associated with the increase in blood pressure and the wall-thickening of afferent arterioles as well as arcuate arteries...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28336174/the-exposure-to-formaldehyde-causes-renal-dysfunction-inflammation-and-redox-imbalance-in-rats
#6
Camila de Oliveira Ramos, Clarissa Rodrigues Nardeli, Keila Karine Duarte Campos, Karina Braga Pena, Dafne Fernandes Machado, Ana Carla Balthar Bandeira, Guilherme de Paula Costa, André Talvani, Frank Silva Bezerra
Twenty-eight Fischer male rats were divided into four groups: control group (CG), exposed to the ambient air, and groups exposed to formaldehyde (FA) at concentrations of 1% (FA1%), 5% (FA5%) and 10% (FA10%). Kidney function was assessed by dosage of uric acid, creatinine and urea. Morphometry was performed on the thickness of the lumen of Bowman's capsule and diameter of the lumen of the renal tubules. We evaluated the redox imbalance through the catalase and superoxide dismutase activity as well as oxidative damage by lipid peroxidation...
March 20, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28335305/simultaneous-detection-of-dopamine-and-uric-acid-using-a-poly-l-lysine-graphene-oxide-modified-electrode
#7
Yuehua Zhang, Wu Lei, Yujuan Xu, Xifeng Xia, Qingli Hao
A novel, simple and selective electrochemical method was investigated for the simultaneous detection of dopamine (DA) and uric acid (UA) on a poly(l-lysine)/graphene oxide (GO) modified glassy carbon electrode (PLL/GO/GCE) by differential pulse voltammetry (DPV). The electrochemically prepared PLL/GO sensory platform toward the oxidation of UA and DA exhibited several advantages, including high effective surface area, more active sites and enhanced electrochemical activity. Compared to the PLL-modified GCE (PLL/GCE), GO-modified GCE and bare GCE, the PLL/GO/GCE exhibited an increase in the anodic potential difference and a remarkable enhancement in the current responses for both UA and DA...
September 28, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334637/on-the-non-linear-association-between-serum-uric-acid-levels-and-all-cause-mortality-rate-in-patients-with-type-2-diabetes-mellitus
#8
Olga Lamacchia, Andrea Fontana, Antonio Pacilli, Massimiliano Copetti, Stefania Fariello, Monia Garofolo, Giuseppe Penno, Vincenzo Trischitta, Salvatore De Cosmo, Mauro Cignarelli
BACKGROUND AND AIMS: High levels of serum uric acid (SUA) are associated with increased mortality risk in the general population. Contrasting results are available in people with diabetes. The aim of our study was to investigate the association and its functional form between SUA and all cause-mortality in patients with type 2 diabetes mellitus (T2DM). METHODS: We studied three cohorts of patients with T2DM: Gargano Mortality Study, Foggia Mortality Study, Pisa Mortality Study...
March 9, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28334624/simultaneous-monitoring-of-glucose-and-uric-acid-on-a-single-test-strip-with-dual-channels
#9
Jinhong Guo, Xing Ma
The conventional test strip has usually only one electrochemical reaction channel, which requires two times figure punctures for the self-management of patients suffering from both diabetes and gout. Considering the large number of such patients and for the sake of reducing their pains, we report an enzymatic test strip which can simultaneously monitor glucose and uric acid (UA) with only one fingertip blood droplet. The proposed test strip is composed of dual channels. The glucose in blood is detected in the 1st channel above on the substrate and the UA is characterized in the 2nd channel located at the bottom of the substrate...
March 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28332856/association-between-serum-gamma-glutamyl-transferase-and-serum-uric-acid-levels-in-chinese-females-a-cross-sectional-study
#10
Zhao Ya, Liu Fei, Zeng Yue, Liu Dan, Lin Neng-Bo, Luo Yi, Miao Ying, Wan Qin
OBJECTIVE: To investigate the association between serum gamma-glutamyl transferase (GGT) levels and serum uric acid levels in middle-aged and elderly Chinese females. METHODS: A cross-sectional population survey was performed in Luzhou, China (2014). Questionnaires, physical examinations and biochemical tests were conducted. Finally, we included 2486 females who were > 40 years old as participants. Multiple linear regression analysis was used to estimate the association of serum acid levels and other variables...
March 23, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28332473/correlation-analysis-of-renal-ultrasound-elastography-and-clinical-and-pathological-changes-in-patients-with-chronic-kidney-disease%C3%A2
#11
Lingyan Peng, Tingting Zhong, Qiuling Fan, Yanjun Liu, Xuemei Wang, Lining Wang
OBJECTIVE: To analyze the correlations of renal tissue elastography with clinical biochemical indicators and pathological changes in patients with chronic kidney disease (CKD) as well as to explore the potential for renal tissue elastography as a new, noninvasive method for the dynamic monitoring of renal disease progression, efficacy assessment, and prognosis evaluation. METHODS: Patients admitted to the Department of Nephrology of the First Affiliated Hospital of China Medical University from August 2014 to January 2015 who had undergone renal biopsies were selected...
March 23, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28331937/whey-protein-and-albumin-effects-upon-urinary-risk-factors-for-stone-formation
#12
Camila Mithie Hattori, Hans-Göran Tiselius, Ita Pfeferman Heilberg
Protein supplements are consumed for an expected increase in muscle mass and improved exercise performance, but as their impact on lithogenic parameters are unknown, we aimed to evaluate the effects of Whey protein (WP) and Albumin upon the risk factors for nephrolithiasis. WP or Albumin supplements (one scoop/day) were administered for 3 days to 18 healthy volunteers, with 1-week washout period between them. Serum and 24-h urine samples were collected at baseline and after completing each intervention. All participants were asked to replicate their baseline diet during the subsequent urine collection...
March 22, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28330320/xanthine-oxidase-inhibitory-and-antioxidant-potential-of-indian-muscodor-species
#13
Neha Kapoor, Sanjai Saxena
Xanthine oxidase is a key enzyme responsible for hyperuricemia, a pre-disposing factor for Gout and oxidative stress-related diseases. Only two clinically approved xanthine oxidase inhibitors Allopurinol and Febuxostat are currently used for treatment of hyperuricemia. However, owing to their side effects there is a need for new non-purine-based selective inhibitors of xanthine oxidase. In the process of exploring novel xanthine oxidase inhibitors and anti-oxidants, we screened the culture filtrate of 07 novel species of Muscodor, a sterile endophytic fungi isolated from Cinnamomum and Aegle marmelos...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328867/astragaloside-iv-alleviates-lipopolysaccharide-induced-acute-kidney-injury-through-down-regulating-cytokines-ccr5-and-p-erk-and-elevating-anti-oxidative-ability
#14
Wei Zhou, Yi Chen, Xingyu Zhang
BACKGROUND Astragaloside IV (AS-IV) has been shown to prevent ischemia-induced acute kidney injury (AKI) in rat models of ischemia and reperfusion. However, the effects of AS-IV on AKI during sepsis and endotoxinemia is unclear. The current study aimed to investigate the effects and molecular mechanisms of AS-IV on lipopolysaccharide (LPS)-induced AKI. MATERIAL AND METHODS Adult male CD-1 mice were randomly assigned into 6 groups (n=8/group): control group: mice were intraperitoneally (i.p.) injected with normal saline; LPS group (10 mg/kg, i...
March 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28328829/combined-effect-of-obesity-and-uric-acid-on-nonalcoholic-fatty-liver-disease-and-hypertriglyceridemia
#15
Shujun Zhang, Tingting Du, Mengni Li, Huiming Lu, Xuan Lin, Xuefeng Yu
Hyperuricemia is associated with metabolic syndrome (MetS), but the association is often confounded by the shared background of obesity. We sought to explore the modifying effects of obesity on the association between uric acid (UA), MetS components, and nonalcoholic fatty liver disease (NAFLD).We conducted a cross-sectional study in a Chinese population of 10,069 participants aged ≥20 years. Multiplicative interaction between obesity (BMI ≥25 kg/m) and elevated UA was assessed using an interaction term in a logistic regression analysis...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28325753/mouse-model-for-inherited-renal-fibrosis-associated-with-endoplasmic-reticulum-stress
#16
Sian E Piret, Eric Olinger, Anita A C Reed, M Andrew Nesbit, Tertius A Hough, Liz Bentley, Olivier Devuyst, Roger Cox, Rajesh V Thakker
Renal fibrosis is a common feature of renal failure resulting from multiple aetiologies, including diabetic nephropathy, hypertension and inherited renal disorders. However, the mechanisms of renal fibrosis are incompletely understood and we therefore explored these by establishing a mouse model for a renal tubular disorder, referred to as autosomal dominant tubulointerstitial kidney disease (ADTKD) due to missense uromodulin (UMOD) mutations (ADTKD-UMOD). ADTKD-UMOD, which is associated with retention of mutant uromodulin in the endoplasmic reticulum (ER) of renal thick ascending limb cells, is characterized by hyperuricemia, interstitial fibrosis, inflammation, and renal failure, and we used targeted homologous recombination to generate a knock-in mouse model with an ADTKD-causing missense cysteine to arginine uromodulin mutation (C125R)...
March 21, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28324150/stress-stones-stress-recurrent-stones-a-self-propagating-cycle-difficulties-in-solving-this-dichotomy
#17
Montserrat Arzoz-Fabregas, Josep Roca-Antonio, Luis Ibarz-Servio, Dalielah Jappie-Mahomed, Allen Rodgers
Numerous studies have reported an association between stress and urolithiasis. Although urinary risk factors have been measured in several of these, compelling evidence of a causal relationship has not been established. A shortcoming is that alterations in single urinary parameters rather than ratios and quotients, which provide a more synergistic risk evaluation, have been measured. Recently, we speculated about a possible association between chronic stress and stone recurrence. This presents an intriguing dichotomy of whether stress causes stones or vice versa, or whether they are linked in a self-propagating stress-stones-stress-recurrence cycle...
March 21, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28322069/increasing-maneb-doses-induces-reactive-oxygen-species-overproduction-and-nephrotoxicity-in-adult-mice
#18
Imen Jaballi, Hajer Ben Saad, Intidhar Bkhairia, Intissar Kammoun, Michael Droguet, Christian Magné, Tahia Boudawara, Choumous Kallel, Monsef Nasri, Ahmed Hakim, Ibtissem Ben Amara
BACKGROUND AND PURPOSE: The aim of this study was to elucidate the biochemical, molecular and histopathological aspects of the kidney injuries as well as the hematological perturbations induced after adult mice exposure to increasing doses of maneb (MB). MATERIAL AND METHOD: Adult mice were intraperitoneally treated for seven days with four graded doses of MB, corresponding to 1/8, 1/6, 1/4 and 1/2 of its lethal dose (LD50=1500 mg/kg body weight). RESULTS: Hematological analysis revealed a significant disruption in total white blood cells and platelets and a significant decrease in the plasmatic levels of ferrozine in mice treated with 1/8, 1/6 and 1/4 of MB LD50...
March 21, 2017: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/28321056/sodium-glucose-co-transporter-2-inhibitors-reduce-the-abdominal-visceral-fat-area-and-may-influence-the-renal-function-in-patients-with-type-2-diabetes
#19
Takahiro Tosaki, Hideki Kamiya, Tatsuhito Himeno, Yoshiro Kato, Masaki Kondo, Kaori Toyota, Tomoyo Nishida, Megumi Shiroma, Kaori Tsubonaka, Hitomi Asai, Miho Moribe, Yuki Nakaya, Jiro Nakamura
Objective and Methods An SGLT2 inhibitor (ipragliflozin, dapagliflozin, luseogliflozin, tofogliflozin, or canagliflozin) was administered to 132 outpatients with type 2 diabetes mellitus with or without other antidiabetic drugs for 6 months to evaluate its efficacy, the incidence of adverse events, and its influence on the renal function. Results The patient's mean glycated hemoglobin level significantly improved from 7.52±1.16% to 6.95±0.98% (p<0.001). The body weight of the patients was significantly reduced from 78...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28320765/effect-of-uric-acid-lowering-on-renin-angiotensin-system-activation-and-ambulatory-bp-a-randomized-controlled-trial
#20
Ciaran J McMullan, Lea Borgi, Naomi Fisher, Gary Curhan, John Forman
BACKGROUND AND OBJECTIVES: Higher serum uric acid levels, even within the reference range, are strongly associated with increased activity of the renin-angiotensin system (RAS) and risk of incident hypertension. However, the effect of lowering serum uric acid on RAS activity in humans is unknown, although the data that lowering serum uric acid can reduce BP are conflicting. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: In a double-blind placebo-controlled trial conducted from 2011 to 2015, we randomly assigned 149 overweight or obese adults with serum uric acid ≥5...
March 20, 2017: Clinical Journal of the American Society of Nephrology: CJASN
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