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Hypocitraturia

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https://www.readbyqxmd.com/read/28882031/a-multiregional-italian-cohort-of-24-hour-urine-metabolic-evaluation-in-renal-stone-formers
#1
Francesco Esperto, Martino Marangella, Alberto Trinchieri, Michele Petrarulo, Roberto Miano
BACKGROUND: Nephrolithiasis is a common condition with several studies documenting an increased prevalence over the past four decades. EAU and AUA guidelines recommend 24-hour urine metabolic evaluation in high-risk stone formers. Aim of this study is to retrospectively evaluate the first three years of experience with Lithotest® (Biohealth Italia Srl, Turin, Italy) through the analysis of demographic, clinical and biochemical data collected from a large cohort of patients with kidney stones...
September 7, 2017: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/28865885/stone-growth-patterns-and-risk-for-surgery-among-children-presenting-with-hypercalciuria-hypocitraturia-and-cystinuria-as-underlying-metabolic-causes-of-urolithiasis
#2
F Zu'bi, M Sidler, E Harvey, R I Lopes, A Hojjat, N Naoum, M Pokarowski, A J Lorenzo, W A Farhat, F Papanikolaou, J Dos Santos
INTRODUCTION: Hypercalciuria, hypocitraturia and cystinuria are the most common underlying metabolic stone abnormalities in children. The present study compared stone growth patterns, stone burden, and the risk of stone-related surgery among these underlying metabolic conditions. METHODS: A retrospective cohort of 356 children with renal stones, followed from 2000 to 2015, was studied. Differences among metabolic groups were determined using Kruskal-Wallis test; the Scheffé-test was used for multiple comparisons to determine differences among single groups...
August 4, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28762682/-use-of-citrate-in-patients-with-nephrolithiasis
#3
REVIEW
Martino Marangella
Citrate is a tricarboxylic acid and an intermediate metabolite of Krebs cycle. It contributes to oxidative metabolism of both kidney and liver. Alkaline sodium or potassium salts have the potential to increase alkaline reserve. In the kidney citrate is completely filtered at the glomerulus, undergoing to 10-40% tubular resorption. Renal insufficiency, even early, metabolic acidosis, potassium depletion induce hypocitraturia. Its importance in nephrolithiasis stems from its ability to form soluble complexes with calcium and to interfere with crystal formation, thus exerting a dual inhibition, thermodynamic and kinetic...
August 1, 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28689648/clinical-and-genetic-characterization-of-chinese-pediatric-cystine-stone-patients
#4
Luming Shen, Xiaoming Cong, Xin Zhang, Ninghong Wang, Ping Zhou, Yan Xu, Qingyi Zhu, Xiaojian Gu
INTRODUCTION: Cystine stone is the only clinical manifestation in patients with cystinuria, which is an autosomal recessive inheritable disease. However, clinical and genetic data vary among patients in different countries. OBJECTIVE: To investigate the characteristics of Chinese pediatric cystine stone patients. PATIENTS AND METHODS: Thirteen pediatric patients with cystine stones were evaluated in our clinic between 2012 and 2015. Gene mutations in SLC3A1 and SLC7A9 were investigated...
June 24, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28653226/urinary-biomarkers-in-the-early-detection-and-follow-up-of-tubular-injury-in-childhood-urolithiasis
#5
Mehmet Taşdemir, Dilara Fuçucuoğlu, Suat Hayri Küçük, Meltem Erol, Özgül Yiğit, Ilmay Bilge
BACKGROUND: To investigate relationships among urinary biomarkers [kidney injury molecule-1 (KIM-1), N-acetyl-β-glucosaminidase (NAG)], neutrophil gelatinase-associated lipocalin (NGAL) levels and renal tubular injury in childhood urolithiasis. METHODS: Seventy children [36 girls, mean age: 7.3 ± 5.0 years (0.5-18.2)] with urolithiasis/microlithiasis and 42 controls [18 girls, mean age: 8.5 ± 3.8 years (0.9-16.2)] were included in this multicenter, controlled, prospective cohort study...
June 26, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28623397/different-effects-of-%C3%AE-linolenic-acid-gla-supplementation-on-plasma-and-red-blood-cell-phospholipid-fatty-acid-composition-and-calcium-oxalate-kidney-stone-risk-factors-in-healthy-subjects-from-two-race-groups-with-different-risk-profiles-pose-questions-about
#6
Allen L Rodgers, Dalielah Jappie-Mahomed, Paul J van Jaarsveld
Fatty acid (FA) composition of phospholipids in plasma and red blood cells (RBC) can influence calciuria, oxaluria and renal stone formation. In this regard, the ratio of arachidonic acid (AA) and its precursor linoleic acid (LA) appears to be important. Administration of γ-linolenic acid (GLA) has been shown to increase the concentration of dihomo-gamma linoleic acid (DGLA) relative to AA indicating that it may attenuate biosynthesis of the latter. Such effects have not been investigated in race groups having difference stone occurrence rates...
June 16, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28605936/vascular-disease-and-kidney-stones-abdominal-aortic-calcifications-are-associated-with-low-urine-ph-and-hypocitraturia
#7
Nishant D Patel, Ryan D Ward, Juan Calle, Erick M Remer, Manoj Monga
OBJECTIVE: Vascular calcifications are associated with nephrolithiasis. Although studies have demonstrated correlations with vascular disease and calcium stones in kidney stone formers (KSF), an etiologic link has remained elusive. As a noncontrast CT (NCCT) scan is typically part of a stone evaluation, our objective was to evaluate the association of NCCT-based assessment of abdominal aortic calcifications (AACs) with 24-hour urine parameters and stone composition. MATERIALS AND METHODS: Ninety-seven KSF were included with CT imaging and 24-hour urine studies...
July 7, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28575881/fourier-transform-infrared-analysis-of-urinary-calculi-and-metabolic-studies-in-a-group-of-sicilian-children
#8
Maria Michela D'Alessandro, Giuseppe Gennaro, Pietro Tralongo, Silvio Maringhini
INTRODUCTION: Prevalence of urinary calculi in children has been increasing in the past years. We performed an analysis of the chemical composition of stones formers of the pediatric population in our geographical area over the years 2005 to 2013. MATERIALS AND METHODS: Fourier transform infrared spectroscopy was employed for the determination of the calculus composition of a group of Sicilian children, and metabolic studies were performed to formulate the correct diagnosis and establish therapy...
May 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28542241/signification-of-distal-urinary-acidification-defects-in-hypocitraturic-patients
#9
Valentina Forni Ogna, Anne Blanchard, Rosa Vargas-Poussou, Adam Ogna, Stéphanie Baron, Jean-Philippe Bertocchio, Caroline Prot-Bertoye, Jérôme Nevoux, Julie Dubourg, Gérard Maruani, Margarida Mendes, Alejandro Garcia-Castaño, Cyrielle Treard, Nelly Lepottier, Pascal Houillier, Marie Courbebaisse
BACKGROUND AND OBJECTIVES: Hypocitraturia has been associated with metabolic acidosis and mineral disorders. The aim of this study was to investigate the occurrence of urinary acidification defects underlying hypocitraturia. MATERIALS AND METHODS: This retrospective observational study included 67 patients (32 men), aged 40.7±15.1 years with hypocitraturia (<1.67 mmol/24-h) and nephrolithiasis, nephrocalcinosis, and/or bone demineralization, referred to our center from 2000 to 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28457074/nephrolithiasis-in-israel-epidemiological-characteristics-of-return-patients-in-a-tertiary-care-center
#10
Yasmin Abu-Ghanem, Nir Kleinmann, Harry Z Winkler, Dorit E Zilberman
BACKGROUND: The prevalence and etiology of nephrolithiasis vary, depending on geography, gender and ethnicity. OBJECTIVES: To analyze the demographic data of return nephrolithiasis patients in a tertiary care center. METHODS: We retrospectively reviewed our prospective registry database of return patients seen at our outpatient clinic for nephrolithiasis. Data included gender, age at first visit, age at first stone event, body mass index (BMI), self-reported hypertension, diabetes mellitus (DM), and hyperlipidemia...
December 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28365270/calcium-to-citrate-ratio-distinguishes-solitary-and-recurrent-urinary-stone-forming-children
#11
William DeFoor, Elizabeth Jackson, Marion Schulte, Zaheer Alam, John Asplin
PURPOSE: The prevalence of urinary stone disease is increasing in children. We previously reported a high rate of urinary metabolic abnormalities, including hypercalciuria and hypocitraturia, in stone forming children. In this study we determined whether calcium-to-citrate ratio could help predict those at risk for recurrent stone formation. MATERIALS AND METHODS: We conducted a retrospective cohort study to assess calcium-to-citrate ratios in children with urolithiasis...
March 30, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28332779/intrafamilial-phenotypic-variability-in-a-polish-family-with-sensenbrenner-syndrome-and-biallelic-wdr35-mutations
#12
Joanna Walczak-Sztulpa, Anna Wawrocka, Agata Sobierajewicz, Lukasz Kuszel, Jan Zawadzki, Ryszard Grenda, Anna Swiader-Lesniak, Beata Kocyla-Karczmarewicz, Anna Wnuk, Anna Latos-Bielenska, Krystyna H Chrzanowska
Sensenbrenner syndrome (cranioectodermal dysplasia, CED) is a very rare autosomal recessive ciliopathy. Cranioectodermal dysplasia is characterized by craniofacial, skeletal, and ectodermal abnormalities. About 50 patients have been described to date. Sensenbrenner syndrome belongs to a group of ciliary chondrodysplasias and is a genetically heterogeneous disorder. Mutations in five genes: IFT122, WDR35, IFT43, WDR19, and IFT52 have been associated with CED. All known genes encode proteins that are part of the intraflagellar transport complex, which plays an important role in the assembly and maintenance of cilia...
May 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28220601/multiple-sclerosis-and-nephrolithiasis-a-matched-case-comparative-study
#13
Vishnu Ganesan, Wen Min Chen, Rajat Jain, Shubha De, Manoj Monga
OBJECTIVE: To compare stone composition and serum/urine biochemistries in stone formers with multiple sclerosis (MS) against stone formers without MS and to examine the association between mobility, methods of bladder emptying, and stone formation. PATIENTS AND METHODS: In this retrospective case-control study, we identified patients diagnosed with MS and kidney stone disease who were seen at our institution between 2001 and 2016. For the first part of the study, up to two controls (stone formers without a history of MS) were identified for each case and matched on age, body mass index, and sex...
June 2017: BJU International
https://www.readbyqxmd.com/read/28188435/marked-increase-in-urinary-excretion-of-apolipoproteins-in-children-with-nephrolithiasis-associated-with-hypercalciuria
#14
Larisa Kovacevic, Hong Lu, Joseph A Caruso, Tuhina Govil-Dalela, Ronald Thomas, Yegappan Lakshmanan
BACKGROUND: Using a proteomic approach, we aimed to identify and compare the urinary excretion of proteins involved in lipid transport and metabolism in children with kidney stones and hypercalciuria (CAL), hypocitraturia (CIT), and normal metabolic work-up (NM), and in healthy controls (HCs). Additionally, we aimed to confirm these results using ELISA, and to examine the relationship between the urinary excretion of selected proteins with demographic, dietary, blood, and urinary parameters...
June 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/27994868/outcomes-of-living-kidney-donors-with-medullary-sponge-kidney
#15
Wisit Cheungpasitporn, Charat Thongprayoon, Brady A Brabec, Wonngarm Kittanamongkolchai, Stephen B Erickson
BACKGROUND: Patients with medullary sponge kidney (MSK) commonly encounter recurrent nephrolithiasis. The existing knowledge on safety of donors with MSK has not been studied. METHODS: We conducted a retrospective cohort study at a tertiary referral hospital to assess the outcomes of living kidney donors with MSK. All adults with MSK (N = 26) who underwent nephrectomy as living kidney donors between January 2000 and September 2014 were included. Non-donors with MSK (N = 78) were randomly selected by matching the year of birth and the comorbidity score with a ratio of 1:3 for comparison...
December 2016: Clinical Kidney Journal
https://www.readbyqxmd.com/read/27936931/characterization-of-urolithiasis-in-patients-following-lower-urinary-tract-reconstruction-with-intestinal-segments
#16
Tracy Marien, Jennifer Robles, Trisha M Kammann, Mustafa Kadihasanoglu, Davis P Viprakasit, S Duke Herrell, Nicole L Miller
PURPOSE: Urinary diversion and augmentation cystoplasty are associated with long-term complications, including metabolic derangements, infectious complications, and urolithiasis. The aim of this series was to characterize upper and lower urinary tract (LUT) calculi in this population. METHODS: A retrospective chart review was performed on all patients with a history of urinary diversion or augmentation cystoplasty who subsequently underwent treatment for urolithiasis between January 1998 and May 2015...
March 2017: Journal of Endourology
https://www.readbyqxmd.com/read/27905491/changes-in-urinary-metabolomic-profile-during-relapsing-renal-vasculitis
#17
Bahjat Al-Ani, Martin Fitzpatrick, Hamad Al-Nuaimi, Alice M Coughlan, Fionnuala B Hickey, Charles D Pusey, Caroline Savage, Christopher M Benton, Eóin C O'Brien, Declan O'Toole, Ken H Mok, Stephen P Young, Mark A Little
Current biomarkers of renal disease in systemic vasculitis lack predictive value and are insensitive to early damage. To identify novel biomarkers of renal vasculitis flare, we analysed the longitudinal urinary metabolomic profile of a rat model of anti-neutrophil cytoplasmic antibody (ANCA) vasculitis. Wistar-Kyoto (WKY) rats were immunised with human myeloperoxidase (MPO). Urine was obtained at regular intervals for 181 days, after which relapse was induced by re-challenge with MPO. Urinary metabolites were assessed in an unbiased fashion using nuclear magnetic resonance (NMR) spectroscopy, and analysed using partial least squares discriminant analysis (PLS-DA) and partial least squares regression (PLS-R)...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27872836/urolithiasis-in-inflammatory-bowel-disease-and-bariatric-surgery
#18
Agapios Gkentzis, Michael Kimuli, Jon Cartledge, Olivier Traxer, Chandra Shekhar Biyani
AIM: To analyse current literature focusing on pathogenesis and therapeutic aspects of urolithiasis with inflammatory bowel disease (IBD) and following bariatric surgery. METHODS: A systematic literature search was performed using PubMed, supplemented with additional references. Studies assessing the association of IBD or bariatric surgery with renal stones in both paediatric and adulthood were included. RESULTS: Certain types of stones are seen more frequently with IBD...
November 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27865972/paediatric-urolithiasis-in-emerging-economies
#19
REVIEW
S Adibul Hasan Rizvi, Sajid Sultan, Mirza Naqi Zafar, Bashir Ahmed, Sadaf Aba Umer, S A Anwar Naqvi
BACKGROUND: Paediatric urolithiasis remains endemic in low resource countries. This review highlights the epidemiology, causation and management of urolithiasis in an Asian country in the context of emerging economies. METHODS: A literature review of recent articles with key words paediatric urolithiasis, developing countries, endemic stone disease, stone composition, metabolic risk factors, management of paediatric urolithiasis was undertaken and 51 relevant articles were selected with the main focus on experience of this center in managing stone disease in the last two decades...
December 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27847289/nephrolithiasis-after-bariatric-surgery-a-review-of-pathophysiologic-mechanisms-and-procedural-risk
#20
REVIEW
Umer Hasan Bhatti, Andrew J Duffy, Kurt Eric Roberts, Amir Hafeez Shariff
Obesity alone is a known risk factor for nephrolithiasis, and bariatric surgery has been linked to a higher incidence of post-operative new-onset nephrolithiasis. The mean interval from bariatric surgery to diagnosis of nephrolithiasis, ranges from 1.5 to 3.6 years. The stone risk is greatest for purely malabsorptive procedures, intermediate for Roux-en-Y gastric bypass and lowest for purely restrictive procedures (laparoscopic adjustable gastric banding, laparoscopic sleeve gastrectomy) where it approaches or is reduced below that of non-operative obese controls...
December 2016: International Journal of Surgery
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