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Kiran Imran, Mirza Naqi Zafar, Uzma Ozair, Sadia Khan, Syed Adibul Hasan Rizvi
The goal of this study was to investigate metabolic risk factors in pediatric stone formers in an emerging economy. A prospective, data collection enrolled 250 children age <1-15 years at our center. Risk factors were evaluated by gender and in age groups <1-5, 6-10 and 11-15 years. Patients were evaluated for demographics, blood and 24 h urine for calcium, magnesium, phosphate, uric acid, electrolytes and additional protein, citrate, ammonia and oxalate in urine. All reported values were two sided and statistical significance was considered at p value ≤0...
October 15, 2016: Urolithiasis
Elisa Cicerello, Mario Mangano, Gian Davide Cova, Franco Merlo, Luigi Maccatrozzo
Fifty-four patients with infected renal lithiasis underwent complete metabolic evaluation searching for underlying factors contributing to stone formation including urine analysis and culture. Metabolic abnormalities were significantly more present in patients with mixed infected stones (struvite+/-apatite and calcium oxalate) than in patients with pure infected stones (struvite+/-carbonate apatite): hypercalciuria in 40%, hyperoxaluria in 34% and hyperuricosuria in 28% (p < 0.05). Urinary excretion of citrate was low in both groups without statistically significant difference (238+/-117 mg/24 h vs 214+/-104 mg/24/h, t = 0...
October 5, 2016: Archivio Italiano di Urologia, Andrologia
Jonas Donner, Maria Kaukonen, Heidi Anderson, Fredrik Möller, Kaisa Kyöstilä, Satu Sankari, Marjo Hytönen, Urs Giger, Hannes Lohi
BACKGROUND: The growing number of identified genetic disease risk variants across dog breeds challenges the current state-of-the-art of population screening, veterinary molecular diagnostics, and genetic counseling. Multiplex screening of such variants is now technologically feasible, but its practical potential as a supportive tool for canine breeding, disease diagnostics, pet care, and genetics research is still unexplored. RESULTS: To demonstrate the utility of comprehensive genetic panel screening, we tested nearly 7000 dogs representing around 230 breeds for 93 disease-associated variants using a custom-designed genotyping microarray (the MyDogDNA® panel test)...
2016: PloS One
Dong Yang, Hans-Göran Tiselius, Chuangxin Lan, Dong Chen, Kang Chen, Lili Ou, Yang Liu, Shaohong Xu, Guohua Zeng, Ming Lei, Wenqi Wu
Urinary stones and urine composition are the first steps in the process of recurrence prevention, but data concerning the association between the two compositions are scarce in Chinese children with urolithiasis. We retrospectively analyzed the records of children (age range 0-18 years) with urolithiasis in our center between March 2004 and December 2013. Stone analysis was carried out in 382 children and 24-hour urine analysis in 80 children. Analysis of both stone and 24-hour urine composition was completed in 56 children...
August 10, 2016: Urolithiasis
Kamal Kant Sahu, Arjun Datt Law, Nidhi Jain, Alka Khadwal, Vikas Suri, Pankaj Malhotra, Subhash Chander Varma
A-14-year old boy, presented with a short history of excessive thirst and increased urine output. Clinical examination showed pallor, generalized lymphadenopathy and hepatosplenomegaly. For evaluation of his polyuric state he underwent routine laboratory investigations, including renal function test, acid-base studies, urine analysis. Blood tests suggested hypokalemia, hypouricemia, hypocalcemia and hyperchloremia with normal liver and kidney function tests. The arterial blood gas analysis was suggestive of normal anion gap metabolic acidosis...
June 2016: Indian Journal of Hematology & Blood Transfusion
Ural Oguz, Zennure Takci, Isil Deniz Oguz, Berkan Resorlu, Ilknur Balta, Ali Unsal
PURPOSE: to investigate whether patients with lichen planus (LP) are really prone to urolithiasis or not. PATIENTS AND METHODS: We performed a prospective analysis of 40 patients diagnosed with lichen planus (LP) (group I), and 40 volunteers did not have LP before (group II). Participants were all checked for urolithiasis by radiological investigations. Blood samples were analyzed for biochemistry parameters including calcium and uric acid. 24-h urine samples were analyzed to investigate oxalate, citrate calcium, uric acid, magnesium, sodium and creatinine...
May 2016: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Sang Taek Lee, Heeyeon Cho
AIM: The incidence of pediatric urolithiasis has increased over the last century because of dietary changes, metabolic abnormalities, climate change, and genitourinary abnormalities. Data on pediatric urolithiasis in non-endemic countries are limited. The aim of this study was to evaluate the clinical findings and metabolic etiology of urolithiasis in Korean children. MATERIAL AND METHODS: The medical records of 73 Korean children who were newly diagnosed with urolithiasis from January 2010 to December 2013 were retrospectively analyzed...
July 2016: Renal Failure
M A Arrabal-Polo, M C Cano-García, G Hidalgo-Agullo, L Roletto-Salmo
OBJECTIVE: The aim of this study is to analyze urine concentrations (mg/dl) of different lithogenic factors in a sample of 24 h as a predictor of these changes rather than absolute values depend on the volume of diuresis. METHODS: A total of 131 patients from the North Almeria Health Management Area (Spain) with urinary calstone disease in whom a metabolic study was indicated were included from June 2014 to May 2015. The concentrations of calcium, oxalate, uric acid, citrate and magnesium were measured in the urine, and the calcium/citrate ratio was calculated...
March 2016: Archivos Españoles de Urología
Francisco Rodolfo Spivacow, Elisa Elena Del Valle, Paula Gabriela Rey
BACKGROUND: Idiopathic or benign hematuria is diagnosed in children after all other possible causes have been ruled out and test results for renal or urologic pathologies are negative. METHODS: To identify possible urinary risk factors for hematuria in children, we retrospectively evaluated clinical onset, family history, and metabolic risk factors of 60 children with idiopathic hematuria but without renal stones or other pathologic conditions that could explain the hematuria...
July 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
Abolfazl Mahyar, Reza Dalirani, Parviz Ayazi, Samaneh Hamzehloo, Seyed Alireza Moshiri, Negin Khoshbakht Ahmadi, Sara Talebi Pour Nikoo, Zohreh Yazdi, Shiva Esmaeily
OBJECTIVES: One of the important complications of vesicoureteral reflux (VUR) is the development of urolithiasis. Identifying factors involved in development of urolithiasis in children with VUR is immensely important. This study was conducted to determine the association between hypercalciuria and hyperuricosuria with VUR in children. METHODS: One-hundred children with VUR (case group) were compared to 100 healthy children (control group) in terms of hypercalciuria and hyperuricosuria...
January 28, 2016: Clinical and Experimental Nephrology
John Michael DiBianco, T W Jarrett, Patrick Mufarrij
This article reviews the relationship between metabolic syndrome (MetS) and nephrolithiasis, as well as the clinical implications for patients with this dual diagnosis. MetS, estimated to affect 25% of adults in the United States, is associated with a fivefold increase in the risk of developing diabetes, a doubling of the risk of acquiring cardiovascular disease, and an increase in overall mortality. Defined as a syndrome, MetS is recognized clinically by numerous constitutive traits, including abdominal obesity, hypertension, dyslipidemia (elevated triglycerides, low high-density lipoprotein cholesterol), and hyperglycemia...
2015: Reviews in Urology
Martha Medina-Escobedo, Rogelio Alcocer-Dzul, José López-López, Jorge Salha-Villanueva
BACKGROUND: Yucatán ranks first in the prevalence of urinary calculi (UL), and above the national average of obesity (OB). The aim of the study was to determine whether there is an association between obesity and metabolic disorders (MD) in patients with UL. METHODS: In a case-control design, 197 patients were studied with and without UL. Weight and height were measured; urine calcium, phosphate, magnesium, uric acid, oxalates, citrates and sodium were quantified...
November 2015: Revista Médica del Instituto Mexicano del Seguro Social
Mitra Naseri
INTRODUCTION: There is limited data about urolithiasis in young infants. We reviewed clinical, imaging, and biochemical data of urolithiasis in the first 2 months of life. MATERIALS AND METHODS: In an 11-year period, 77 of the 1172 children diagnosed with urolithiasis (6.8%) were 60 days old and younger (64.9% boys and 35.1% girls). Routine diagnostic assessments included urinalysis and urine culture; measurement of calcium, uric acid, oxalate, and creatinine in nonfasting random urine; measurement of blood urea nitrogen and serum creatinine, sodium, potassium, calcium, and phosphorus levels; and venous blood gasometry...
September 2015: Iranian Journal of Kidney Diseases
Domenico Prezioso, Pasquale Strazzullo, Tullio Lotti, Giampaolo Bianchi, Loris Borghi, Paolo Caione, Marco Carini, Renata Caudarella, Manuel Ferraro, Giovanni Gambaro, Marco Gelosa, Andrea Guttilla, Ester Illiano, Marangella Martino, Tiziana Meschi, Piergiorgio Messa, Roberto Miano, Giorgio Napodano, Antonio Nouvenne, Domenico Rendina, Francesco Rocco, Marco Rosa, Roberto Sanseverino, Annamaria Salerno, Sebastiano Spatafora, Andrea Tasca, Andrea Ticinesi, Fabrizio Travaglini, Alberto Trinchieri, Giuseppe Vespasiani, Filiberto Zattoni
OBJECTIVE: Diet interventions may reduce the risk of urinary stone formation and its recurrence, but there is no conclusive consensus in the literature regarding the effectiveness of dietary interventions and recommendations about specific diets for patients with urinary calculi. The aim of this study was to review the studies reporting the effects of different dietary interventions for the modification of urinary risk factors in patients with urinary stone disease. MATERIALS AND METHODS: A systematic search of the Pubmed database literature up to July 1, 2014 for studies on dietary treatment of urinary risk factors for urinary stone formation was conducted according to a methodology developed a priori...
June 2015: Archivio Italiano di Urologia, Andrologia
Miguel Angel Ochoa-Hortal Rull, María Del Carmen Cano-García, Miguel Arrabal-Martín, Miguel Angel Arrabal-Polo
INTRODUCTION: Calcium stones are associated with osteoporosis and manifested mainly by elevated fasting urinary calcium/creatinine ratio. The objective of this study is to demonstrate the presence of abnormal metabolism of calcium and calciuria in women with osteoporotic fracture with no previously known renal lithiasis compared to women without osteoporosis and without renal lithiasis. METHODS: In total, 87 women were included in the study. They were divided into two groups: Group 1 with 55 postmenopausal women with osteoporotic fracture and without renal lithiasis; and Group 2 with 32 postmenopausal women without osteoporosis and without history of renal lithiasis...
March 2015: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Inês Aires, Ana Rita Santos, Jorge Pratas, Fernando Nolasco, Joaquim Calado
Familial renal glucosuria is a rare co-dominantly inherited benign phenotype characterized by the presence of glucose in the urine. It is caused by mutations in the SLC5A2 gene that encodes SGLT2, the Na(+)-glucose cotransporter responsible for the reabsorption of the bulk of glucose in the proximal tubule. We report a case of FRG displaying both severe glucosuria and renal hypouricaemia. We hypothesize that glucosuria can disrupt urate reabsorption in the proximal tubule, directly causing hyperuricosuria.
October 2013: Clinical Kidney Journal
Abdulkadir Tepeler, Brian C Sninsky, Stephen Y Nakada
The objective of this study is to present the outcomes of flexible ureteroscopic laser lithotripsy (URS) for upper urinary tract stone disease in spinal cord injury (SCI) patients performed by a single surgeon. A retrospective analysis was performed for SCI patients treated with flexible URS for proximal ureter and kidney stone disease by a single surgeon between 2003 and 2013. Patient characteristics, operative outcomes, metabolic evaluation, and stone analyses were assessed in detail. A total of 27 URS procedures were performed for urolithiasis in 21 renal units of 19 patients...
November 2015: Urolithiasis
Francisco Rodolfo Spivacow, Elisa Elena del Valle, Armando Luis Negri, Erich Fradinger, Anabella Abib, Paula Rey
Nephrolithiasis is a frequent condition in urology that has an important recurrence and high impact in health economy. Knowing the biochemical abnormalities implicated in its pathogenesis is mandatory to establish therapeutic aims. Our objectives are to present the results in 3040 kidney stone formers in Argentina. All patients were selected after completing an ambulatory metabolic protocol with diagnostic purposes. There were 1717 men, (56.48%), with a mean age of 45±12 years, and 1323 women, (43.52%), mean age 44±12 years...
August 2015: Urolithiasis
Sarah Tarplin, Vishnu Ganesan, Manoj Monga
Obesity is a significant health concern and is associated with an increased risk of nephrolithiasis, particularly in women. The underlying pathophysiology of stone formation in obese patients is thought to be related to insulin resistance, dietary factors, and a lithogenic urinary profile. Uric acid stones and calcium oxalate stones are common in these patients. Use of surgical procedures for obesity (bariatric surgery) has risen over the past two decades. Although such procedures effectively manage obesity-dependent comorbidities, several large, controlled studies have revealed that modern bariatric surgeries increase the risk of nephrolithiasis by approximately twofold...
May 2015: Nature Reviews. Urology
Mehmet Halil Celiksoy, Alev Yilmaz, Gonul Aydogan, Aysel Kiyak, Erdem Topal, Serdar Sander
OBJECTIVE: To review metabolic disorders in Turkish children with urinary tract stone disease. MATERIALS AND METHODS: The medical records of 308 pediatric patients with the diagnosis of urolithiasis between 1996 and 2008, whose disease progression was followed in a single tertiary-care center, were reviewed retrospectively. Two hundred forty-eight patients whose metabolic analyses were performed were included in the study. RESULTS: Of the 248 patients participating in the study, 142 (57%) were men and 106 (43%) were women...
April 2015: Urology
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