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Urine Uric Acid

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161. Uric acid excretion and surgery. (PubMed)

Uric acid excretion and surgery. 5032447 1972 08 09 2018 11 13 0003-4967 31 3 1972 May Annals of the rheumatic diseases Ann. Rheum. Dis. Uric acid excretion and surgery. 162-5 Snaith M L ML Scott J T JT eng Journal Article England Ann Rheum Dis 0372355 0003-4967 268B43MJ25 Uric Acid AYI8EX34EU Creatinine IM Adult Aged Creatinine urine Female Gout etiology Humans Kidney metabolism Male Metabolic Clearance Rate Middle Aged Postoperative Complications Time Factors Uric Acid blood metabolism urine

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1972 Annals of the Rheumatic Diseases

162. Fractional excretion of uric acid in infancy and childhood: Index of tubular maturation (PubMed)

Child Child, Preschool Creatinine urine Female Glomerular Filtration Rate Humans Hydrogen-Ion Concentration Infant Infant, Newborn Kidney Tubules growth & development Male Regression Analysis Uric Acid blood urine Urine 1974 11 1 1974 11 1 0 1 1974 11 1 0 0 ppublish 4441122 PMC1649243 Arch Dis Child. 1971 Jun;46(247):356-62 5104539 N Engl J Med. 1963 Mar 28;268:712-6 contd 13987629 N Engl J Med. 1971 May 27;284(21):1193-6 4929385 Nephron. 1964;1:144-57 14246792 Pediatrics. 1968 Sep;42(3):395-404 (...) Fractional excretion of uric acid in infancy and childhood: Index of tubular maturation 4441122 1975 02 27 2018 11 13 1468-2044 49 11 1974 Nov Archives of disease in childhood Arch. Dis. Child. Fractional excretion of uric acid in infancy and childhood. Index of tubular maturation. 878-82 Passwell J H JH Modan M M Brish M M Orda S S Boichis H H eng Journal Article England Arch Dis Child 0372434 0003-9888 268B43MJ25 Uric Acid AYI8EX34EU Creatinine IM Age Factors Birth Weight Body Surface Area

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1974 Archives of Disease in Childhood

163. A relationship between plasma uric acid concentration and the apparent response to frusemide in normal subjects. (PubMed)

7LXU5N7ZO5 Furosemide 9NEZ333N27 Sodium RWP5GA015D Potassium IM Adult Diuresis drug effects Furosemide pharmacology Humans Male Potassium urine Sodium urine Time Factors Uric Acid blood 1975 8 1 1975 8 1 0 1 1975 8 1 0 0 ppublish 1233997 PMC1402605 Clin Chem. 1967 Jan;13(1):12-8 6016591 Br J Clin Pharmacol. 1975 Jun;2(3):271-6 1234508 (...) A relationship between plasma uric acid concentration and the apparent response to frusemide in normal subjects. 1233997 1976 12 30 2018 11 13 0306-5251 2 4 1975 Aug British journal of clinical pharmacology Br J Clin Pharmacol A relationship between plasma uric acid concentration and the apparent response to frusemide in normal subjects. 361-2 Ramsay L E LE Tidd M J MJ Auty R M RM Levine D D Branch R A RA eng Journal Article England Br J Clin Pharmacol 7503323 0306-5251 268B43MJ25 Uric Acid

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1975 British journal of clinical pharmacology

164. Porous extraction paddle: a solid phase extraction technique for studying the urine metabolome (PubMed)

from uric acid to peptides.The PEP allows the user to extract a large liquid sample in a jar simply by turning on a motor. The technique will be helpful in conducting metabolomics and xenobiotic exposome studies of urine, encouraging the extraction of large volumes to set up a convenient repository sample (e.g. 2 g of exposed adsorbent in a cryovial) for shipment and re-analysis in various ways in the future, including scaled-up isolation of unknown chemicals for identification. Copyright © 2016 (...) Porous extraction paddle: a solid phase extraction technique for studying the urine metabolome A method was needed to accomplish solid-phase extraction of a large urine volume in a convenient way where resources are limited, towards a goal of metabolome and xenobiotic exposome analysis at another, distant location.A porous extraction paddle (PEP) was set up, comprising a porous nylon bag containing extraction particles that is flattened and immobilized between two stainless steel meshes

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2016 Rapid communications in mass spectrometry : RCM

165. Understanding the Urine Electrolyte Profile of the Individual Renal Unit

, oxalate, potassium, magnesium, phosphate, uric acid, and urate. When an abnormality is detected on a 24-hour urine collection the assumption is that this is due to a global metabolic defect present in both kidneys. However, this may not be the case. It is possible there could be a relative imbalance with both kidneys having a defect, but to different degrees (or different defects in one or multiple electrolytes). It is also possible that one kidney has a dominant defect, but the contralateral kidney (...) Understanding the Urine Electrolyte Profile of the Individual Renal Unit Understanding the Urine Electrolyte Profile of the Individual Renal Unit - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before adding more

2016 Clinical Trials

166. Idiopathic calcium nephrolithiasis. 1. Differences in urine crystalloids, urine saturation with brushite and urine inhibitors of calcification between persons with and persons without recurrent kidney stone formation. (PubMed)

), the ability of the urine to calcify collagen in vitro, and the concentration of urine inhibitors of collagen calcification were measured. The patients had a reduced urine citrate excretion rate in addition to an increased urine calcium excretion rate, while the rates for urine magnesium, phosphate, uric acid and oxalate were not significantly different in the two groups of subjects. The urine concentration of magnesium, phosphate and uric acid was decreased in the patients because of the higher urine (...) volume. The urine creatinine excretion rate correlated with the rates of excretion of urine calcium, magnesium, phosphate, uric acid and oxalate in both groups, which suggested that increased lean body mass, possibly associated with greater food intake, may be an important determinant of crystalloid excretion. The urine of the patients was significantly more saturated with brushite than the urine of the control subjects and resulted in greater collagen calcification when incubated in vitro. The urine

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1979 Canadian Medical Association Journal

167. Treatment response in stone patients with low urine pH and hypocitraturia stratified by body mass index. (PubMed)

in these parameters from baseline. Similarly, we compared the rates of potassium citrate treatment failure.A total of 125 patients with hypocitraturia and low urinary pH were included in this study. Median patient age was 61 years, 80 patients were male and median body mass index was 30.4 kg/m(2). Patients with a higher body mass index tended to be younger (p=0.010), and had a lower urinary citrate but higher sodium, oxalate and uric acid levels. Urinary pH was similar across body mass index groups. pH values (...) Treatment response in stone patients with low urine pH and hypocitraturia stratified by body mass index. Obesity has been shown to be a risk factor for kidney stone formation. Obesity leads to insulin resistance which subsequently leads to low urinary pH. Low urinary pH is typically treated with potassium citrate. We determined if the response to potassium citrate for the treatment of low urinary pH and hypocitraturia varied when patients were stratified by body mass index.We retrospectively

2015 Journal of Urology

168. The Characteristics of the Stone and Urine Stone Composition in Chinese Stone Formers: Primary Report of a Single-center Results. (PubMed)

product risk indices were also calculated.The major stone constituents in the 507 analyzed stones were as follows: calcium oxalate (78.3%), infection stone components (14.6%), uric acid (3.6%), and calcium phosphate (3.4%). Only 1 stone was composed of cystine (0.2%). Of all patients, 504 (99.4%) had 1 or several urinary metabolic abnormalities. Hypocitraturia was recorded in 93.9%, high sodium excretion in 58.6%, small urine volume in 45.6%, hyperoxaluria in 31.0%, hypercalciuria in 26.0 (...) The Characteristics of the Stone and Urine Stone Composition in Chinese Stone Formers: Primary Report of a Single-center Results. To assess urine composition in Chinese patients with urolithiasis.Five hundred seven Chinese patients with urolithiasis from our center in southern China were included in this study. Analysis of stone composition was performed using infrared spectrometry. From all patients, 24-hour urine samples were collected for analysis of urinary variables. Some ion activity

2014 Urology

169. Metabolomic Analysis of Biochemical Changes in the Plasma and Urine of collagen-induced arthritis in rats after Treatment with Huang-Lian-Jie-Du-Tang. (PubMed)

of HLJDT group was able to restore to normal the disturbed urinary levels of citric acid, creatine, pantothenic acid, carnitine, pantothenic acid, phenylacetylglycine and plasma levels of uric acid, L-histidine, and l-phenylalanine in model rats.Our study indicates that HLJDT and its constituents combination treatment can ameliorate CIA through partially regulating the perturbed energy metabolism. Our work demonstrated that metabonomics-based approach is a promising new tool to evaluate the therapeutic (...) Metabolomic Analysis of Biochemical Changes in the Plasma and Urine of collagen-induced arthritis in rats after Treatment with Huang-Lian-Jie-Du-Tang. Huang-Lian-Jie-Du-Tang (HLJDT oren-gedoku-to in Japanese), a classical traditional Chinese medicine (TCM) formula, is well known for the treatment of inflammatory-related diseases such as gastritis, dermatitis, and ulcerative colitis. Our previous studies have indicated that HLJDT has therapeutic potential in rheumatoid arthritis treatment

2014 Journal of Ethnopharmacology

170. Differences in 24-h urine composition between nephrolithiasis patients with and without diabetes mellitus. (PubMed)

and multivariable linear regression models were performed, comparing patients with and without DM. A subanalysis of patients with stone analysis data available was performed, comparing the stone composition of patients with and without DM.Of the 1117 patients who comprised the study population, 181 (16%) had DM and 936 (84%) did not have DM at the time of urine analysis. Univariable analysis showed significantly higher total urine volume, citrate, uric acid (UA), sodium, potassium, sulphate, oxalate, chloride (...) Differences in 24-h urine composition between nephrolithiasis patients with and without diabetes mellitus. To examine the differences in 24-h urine composition between nephrolithiasis patients with and without diabetes mellitus (DM) in a large cohort of stone-formers and to examine differences in stone composition between patients with and without DM.A retrospective review of 1117 patients with nephrolithiasis and a 24-h urine analysis was completed. Univariable analysis of 24-h urine profiles

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2015 BJU international

171. Safety and Efficacy of Omega-3 Free Fatty Acids in Adolescents With Obesity and Hypertriglyceridemia.

of study treatment Fasting HDL-C [ Time Frame: 12 weeks ] Fasting HDL-C from baseline to week 12 of study treatment Percent Change from baseline in glucose [ Time Frame: 12 weeks ] Percent Change in glucose from baseline to week 12 of study treatment Fasting glucose [ Time Frame: 12 weeks ] Fasting glucose from baseline to week 12 of study treatment Percent Change from baseline in Uric Acid [ Time Frame: 12 weeks ] Percent Change in Uric Acid from baseline to week 12 of study treatment Fasting Uric (...) Acid [ Time Frame: 12 weeks ] Fasting Uric Acid from baseline to week 12 of study treatment Eligibility Criteria Go to Information from the National Library of Medicine Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Layout table for eligibility

2017 Clinical Trials

172. Differences in 24-Hour Urine Composition Between Apatite and Brushite Stone Formers. (PubMed)

models, adjusting for clinical and demographic factors.A total of 97 patients (88%) had predominantly apatite stones and 13 patients (12%) had predominantly brushite stones. In univariable analysis, brushite stone formers had significantly higher mean 24-hour urinary calcium excretion (apatite = 204.8 ± 103.5 mg vs brushite = 329.7 ± 136.6 mg, P = .007), higher mean super saturation (SS) CaP (apatite = 1.423 ± 0.867 vs brushite = 2.576 ± 0.171, P = .004) and lower mean SS uric acid (apatite = 0.688 (...) ± 0.796 vs brushite = 0.345 ± 0.190, P <.001). Similarly in multivariable analysis, brushite stone formers had significantly higher mean 24-hour urinary calcium excretion (mean difference = 135.1 mg, P <.001) and higher mean SS CaP (mean difference = 1.14, P <.001) but similar mean SS uric acid (mean difference = -0.37, P = .103). All other factors analyzed including body-mass index, urinary pH, volume, oxalate, citrate, sodium, potassium, magnesium, phosphate, chloride, ammonium, sulfate, uric acid

2013 Urology

173. TEMPORARY REMOVAL: The Effect of Dietary Sodium and Fructose Intake on Urine and Serum Parameters of Stone Formation in a Pediatric Mouse Model: A Pilot Study. (PubMed)

Western diet. Body weight was measured twice weekly. Urine was periodically collected and mice were sacrificed on day 30. Samples were pooled to analyze serum and urine electrolyte factors.There was no significant difference in body weights among the groups at any time or in kidney weight at sacrifice (each p >0.15). There was no observable increase in urine stone forming analytes across the arms except uric acid, which tended to be higher in the Western diet and high fructose, high sodium Western (...) TEMPORARY REMOVAL: The Effect of Dietary Sodium and Fructose Intake on Urine and Serum Parameters of Stone Formation in a Pediatric Mouse Model: A Pilot Study. Dietary factors have a role in stone disease in adults but little is known about the relationship in children. We tested whether diet could alter urine and serum parameters in a pediatric mouse model.We randomized 30 female BALB/c mice at age 3 weeks to mouse chow, a complex carbohydrate Western diet or a high fructose, high sodium

2013 Journal of Urology

174. Changes in Urine Parameters After Desert Exposure: Assessment of Stone Risk in United States Marines Transiently Exposed to a Desert Environment. (PubMed)

to a desert environment.A total of 50 Marines completed a questionnaire and performed 3, 24-hour urine collections before mobilization to the desert, after 30 days in the desert and 2 weeks after returning from the desert.Daily urine output decreased 68% to 0.52 L despite marked increased fluid intake (17 L per day). Total daily urinary excretion of calcium, uric acid, sodium, magnesium and potassium in the desert decreased by 70%, 41%, 53%, 22% and 36%, respectively. Urinary pH decreased from 6.1 to 5.6 (...) while in the desert, and citrate and oxalate had minimal changes. After their return from the desert, apart from a decrease of 22% in oxalate, there were no statistically significant differences from baseline. While in the desert, relative supersaturation risks of uric acid and sodium urate were increased 153% and 56%, respectively. Brushite relative supersaturation decreased 24%. After their return there was no statistical difference from baseline.Our findings suggest that the kidneys preserved

2012 Journal of Urology

175. A Study Of Pregabalin (Lyrica) Drug Levels In Urine, Plasma And Breast Milk Of Healthy Lactating Women

], mean corpuscular hemoglobin [MCH], mean corpuscular hemoglobin concentration [MCHC], platelets, white blood cell count, lymphocytes, total neutrophils, basophils, eosinophils, monocytes); liver function (bilirubin, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, total protein, albumin); renal function (blood urea nitrogen, creatinine, uric acid); electrolytes (sodium, potassium, chloride, calcium, bicarbonate); clinical chemistry (glucose); urinalysis (urine pH, glucose (...) A Study Of Pregabalin (Lyrica) Drug Levels In Urine, Plasma And Breast Milk Of Healthy Lactating Women A Study Of Pregabalin (Lyrica) Drug Levels In Urine, Plasma And Breast Milk Of Healthy Lactating Women - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please

2012 Clinical Trials

176. Variations between two 24-hour urine collections in patients presenting to a tertiary stone clinic (PubMed)

upon presentation between January 2010 and December 2010. Samples were collected on consecutive days and examined for the following 11 urinary parameters: volume, creatinine, sodium, calcium, uric acid, citrate, oxalate, potassium, phosphorous, magnesium and urea nitrogen. For each parameter, the absolute value of the difference between the two samples rather than the direct difference was compared with zero. Similarly, the percent difference between samples was calculated for each parameter.The (...) Variations between two 24-hour urine collections in patients presenting to a tertiary stone clinic The current Canadian Urological Association (CUA) guideline recommends two 24-hour urine collections in the metabolic evaluation for patients with urolithiasis. The aim of the present study was to compare two consecutive 24-hour urine collections in patients with a history of urolithiasis presenting to a tertiary stone clinic.We retrospectively reviewed 188 patients who had two 24-hour collections

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2012 Canadian Urological Association Journal

177. Urine NGAL and KIM-1 in children and adolescents with hyperuricemia. (PubMed)

into two groups: the hyperuricemic (HU) group comprising 59 subjects with hyperuricemia (defined as serum uric acid >4.8 and >5.5 mg/dl in girls and boys, respectively) and the reference group comprising 29 patients with normouricemia. Urine NGAL and KIM-1 levels were evaluated using a commercially available kit.Concentrations of the examined biomarkers [urine NGAL, NGAL/creatinine (cr.) ratio, urine KIM-1, KIM-1/cr. ratio] were increased in the HU group compared with the reference group (p < 0.01 (...) ). There were positive correlations between the serum uric acid and urine NGAL/cr. ratio (R = 0.67, p < 0.001) and the urine KIM-1/cr. ratio (R = 0.36, p < 0.001). In the multiple regression models, serum uric acid, systolic blood pressure and cholesterol accounted for more than 49 % of the variation in the NGAL/cr. ratio (R = 0.702, p < 0.001). In the second model, serum uric acid, gender, age and systolic blood pressure accounted for more than 36 % of the variation in the KIM-1/cr. ratio (R = 0.604, p

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2013 Pediatric Nephrology

178. Uric acid

purified from milk and extracts. Uric acid is released in conditions (low oxygen saturation). Genetic and physiological diversity [ ] Primates . In and , uric acid (actually hydrogen urate ion) is the final (breakdown) product of and is excreted in urine, whereas in most other , the enzyme further oxidizes uric acid to . The loss of uricase in higher primates parallels the similar loss of the ability to synthesize , leading to the suggestion that urate may partially substitute for ascorbate (...) % of humans, impaired renal (kidney) excretion leads to . Normal excretion of uric acid in the urine is 250 to 750 mg per day (concentration of 250 to 750 mg/L if one litre of urine is produced per day — higher than the solubility of uric acid because it is in the form of dissolved acid urates). Dogs . The has a genetic defect in uric acid uptake by the and , resulting in decreased conversion to allantoin, so this breed excretes uric acid, and not allantoin, in the urine. Birds and reptiles

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2012 Wikipedia

179. Beware the low urine ph - the major cause of the increased prevalence of nephrolithiasis in the patient with type 2 diabetes. (PubMed)

Beware the low urine ph - the major cause of the increased prevalence of nephrolithiasis in the patient with type 2 diabetes. There is an increased prevalence of nephrolithiasis and an increase in the incidence of renal colic in patients with diabetes, obesity, hypertension and insulin resistance because of an increased frequency of uric acid crystallization. Uric acid crystallization occurs in the milieu of an acid urine and is not due to hyperuricosuria as with insulin resistance, urinary (...) uric acid levels are generally decreased because of increased renal tubular reabsorption. However, in the presence of insulin resistance, there is decreased renal tubular generation of ammonia and increased sodium absorption leading to acidification of the urine and uric acid crystallization. The presence of a low urine pH should alert the clinician to the increased risk of nephrolithiasis particularly in the obese, diabetic or hypertensive patient. Prevention of nephrolithiasis can be achieved

2011 obesity & metabolism

180. Idiopathic recurrent calcium urolithiasis (IRCU): pathophysiology evaluated in light of oxidative metabolism, without and with variation of several biomarkers in fasting urine and plasma - a comparison of stone-free and -bearing male patients, emphasizing (PubMed)

of markers.1) In SB vs. SF unstratified OM biomarkers were statistically unchanged, but the majority of patients was overweight; despite, in SB vs. SF urine pH, total and non-albumin protein concentration were elevated, fractional urinary uric acid excretion and blood bicarbonate decreased, whereas urine volume, sodium, supersaturation with CaOx and CaPi (as hydroxyapatite) were unchanged; 2) upon variation of OM markers (strata below and above median) numerous stone parameters differed significantly (...) , among others urine volume, total protein, Ca/Pi ratio, pH, sodium, potassium, plasma Ca/Pi ratio and parathyroid hormone, blood pressure, renal excretion of non-albumin protein and other substances; 3) a significant shift from SF to SB patients occurred with increase of urine pH, decrease of blood bicarbonate, and increase of diastolic blood pressure, whereas increase of plasma uric acid impacted only marginally; 4) in both SF and SB patients a strong curvilinear relationship links a rise of urine

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2011 European Journal Of Medical Research

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