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Metabolic and kidney stone

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https://www.readbyqxmd.com/read/29124877/sporadic-primary-hyperparathyroidism-and-stone-disease-a-comprehensive-metabolic-evaluation-before-and-after-parathyroidectomy
#1
Giovanni S Marchini, Kauy V M Faria, Fábio C M Torricelli, Manoj Monga, Miguel Srougi, William C Nahas, Eduardo Mazzucchi
OBJECTIVES: to characterize the stone risk and the impact of parathyroidectomy on the metabolic profile of patients with primary hyperparathyroidism (PHPT) and urolithiasis. SUBJECTS AND METHODS: We analyzed the prospectively collected charts of patients treated at our stone clinic from Jan/2001-Jan/2016 searching for patients with PHPT and urolithiasis. Imaging evaluation of the kidneys, bones and parathyroid glands were assessed. We analyzed the demographic data, serum and urinary parameters before and after parathyroidectomy...
November 10, 2017: BJU International
https://www.readbyqxmd.com/read/29090382/determinants-of-calcium-and-oxalate-excretion-in-subjects-with-calcium-nephrolithiasis-the-role-of-metabolic-syndrome-traits
#2
Andrea Ticinesi, Angela Guerra, Franca Allegri, Antonio Nouvenne, Gianfranco Cervellin, Marcello Maggio, Fulvio Lauretani, Loris Borghi, Tiziana Meschi
BACKGROUND: The association of metabolic syndrome (MetS) traits with urinary calcium (UCE) or oxalate excretion (UOE) is uncertain in calcium stone formers (CSFs). Our aim was to investigate this association in a large group of Caucasian CSFs. METHODS: We retrospectively reviewed data of CSFs evaluated at our Kidney Stone Clinic from 1984 to 2015. Data on body mass index (BMI), MetS traits defined according to international consensus, family history of urolithiasis, anti-hypertensive treatments, calcemia, renal function, and 24-h urinary profile of lithogenic risk were collected...
October 31, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/29061541/personalized-intervention-in-monogenic-stone-formers
#3
REVIEW
Lucas J Policastro, Subodh J Saggi, David S Goldfarb, Jeffrey P Weiss
PURPOSE: The treatment of a first-time renal stone episode consists of acute management followed by medical efforts to prevent stone recurrence. Though nephrolithiasis is roughly 50% heritable, the presence of a family history usually does not affect treatment, as most stone disease is regarded as polygenic, i.e. not attributable to a single gene. Recently, new evidence has suggested that single mutations could be responsible for a larger proportion of renal stones than expected. This intriguing possibility holds the potential to change the management paradigm in stone prevention from metabolically-directed therapy to more specific approaches informed by genetic screening and testing...
October 20, 2017: Journal of Urology
https://www.readbyqxmd.com/read/29058024/management-of-renal-transplant-urolithiasis-a-multicentre-study-by-the-french-urology-association-transplantation-committee
#4
J Branchereau, M O Timsit, Y Neuzillet, T Bessède, R Thuret, M Gigante, X Tillou, R Codas, J Boutin, A Doerfler, F Sallusto, T Culty, V Delaporte, N Brichart, B Barrou, L Salomon, G Karam, J Rigaud, L Badet, F Kleinklauss
PURPOSE: Urolithiasis is rare among renal transplant recipients and its management has not been clearly defined. METHODS: This multicentre retrospective study was organised by the Comité de Transplantation de l'Association Française d'Urologie (French Urology Association transplantation committee). Statistical analysis was performed with SPSS 19 software. RESULTS: Ninety-five patients were included in this study. Renal transplant urolithiasis was an incidental finding in 55% of cases, mostly on a routine follow-up ultrasound examination...
October 22, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29054721/characterizing-the-association-between-toll-like-receptor-subtypes-and-nephrolithiasis-with-renal-inflammation-in-an-animal-model
#5
Mahmut Taha Olcucu, Kerem Teke, Serdar Yalcin, Erkan Olcucuoglu, Vildan Caner, Nilay Sen Turk, Omer Levent Tuncay
OBJECTIVES: To show experimentally induced renal stone disease and evaluate secondary inflammatory responses in vivo, and to characterize changes in expression of Toll-like receptor (TLR) subtypes in this model. To evaluate the associations of hyperoxaluria-induced renal stone formation and Toll-like receptors (TLRs) expression in a rat inflammation model. METHODS: Twenty 5-6-week-old male Wistar rats were divided into control and hyperoxaluria groups (n=10/group) and supplied with normal water or 1% ethylene glycol, respectively, for 16 weeks...
October 17, 2017: Urology
https://www.readbyqxmd.com/read/29054323/human-kidney-stone-matrix-latent-potential-to-restrain-com-induced-cytotoxicity-and-inflammatory-response
#6
Shifa Narula, Simran Tandon, Prakash Baligar, Shrawan Kumar Singh, Chanderdeep Tandon
Kidney stone disease is a multi-factorial disorder resulting from the interplay of various risk factors including lifestyle, environment and genetics along with metabolic activities inside the body. However, it is difficult to determine how these factors converge to promote stone disease. Extensive investigations of kidney stone composition at the molecular level have been carried out however; its impact on the complex mechanism of stone formation is still obscure. Hence, an in vitro study was designed to investigate the attenuation of calcium oxalate toxicity by human kidney stone matrix proteins on NRK-52E cells using flowcytometry, Western blotting, RT-PCR and immunofluorescence assays...
October 18, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28994037/pathophysiology-diagnosis-and-treatment-of-inherited-distal-renal-tubular-acidosis
#7
REVIEW
Nilufar Mohebbi, Carsten A Wagner
Distal renal tubular acidosis (dRTA) is a tubular disorder with a primary defect of urinary acidification and acid excretion in the collecting duct system. Consequently, patients develop hyperchloremic metabolic acidosis with an inappropriately alkaline urine. Inherited forms of dRTA are due to mutations in at least three distinct genes: SLC4A1, ATP6V1B1, ATP6V0A4. Mutations in SLC4A1-(AE1) are inherited either in an autosomal dominant manner or in a recessive one. ATP6V1B and ATP6V0A4 mutations affect two different subunits of the vacuolar H(+)-ATPase proton-pump, the B1 and a4 subunits, and are inherited in an autosomal recessive manner...
October 9, 2017: Journal of Nephrology
https://www.readbyqxmd.com/read/28992566/quantification-of-xanthine-and-uric-acid-related-compounds-in-urine-using-a-dilute-and-shoot-technique-coupling-ultra-high-performance-liquid-chromatography-and-high-resolution-orbitrap-mass-spectrometry
#8
Adrian Rodriguez, Rosa Maria Gomila, Gabriel Martorell, Antonia Costa-Bauza, Felix Grases
Quantitative analysis of relevant metabolites in biofluids such as urine is often a tedious procedure, since it usually requires extraction, purification or preconcentration. For instance, in the analysis of methylxanthines in urine, a solid-phase extraction is often required. In the current work, a rapid and highly sensitive "dilute-and-shoot" method combining ultra-high-performance liquid chromatography and high-resolution mass spectrometry (UHPLC/HRMS) was validated for urinary determination of twelve analytes: uric acid, hypoxanthine, xanthine, 1-methyluric acid, 1,3-dimethyluric acid, 1-methylxanthine, 3-methylxanthine, 7-methylxanthine, theophylline, theobromine, paraxanthine and caffeine...
November 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28981230/-diagnosis-and-treatment-of-nephrolithiasis-and-prevention-of-recurrences
#9
I Simon, F Legrand, J M Des Grottes, F Cotton, J Nortier, T Roumeguère
despite fluctuations, the prevalence of nephrolithiasis has significantly increased during the last decades in industrialized nations worldwide (1 to 15 %), which has a significant impact on the cost of healthcare. This increased prevalence is mainly explained by diet modifications. Environmental, metabolic and genetic factors may also influence the formation of kidney stones. As a consequence, the medical management of this disease is preferentially multidisciplinary and involves urologists, nephrologists, radiologists, biologists and dietitians...
2017: Revue Médicale de Bruxelles
https://www.readbyqxmd.com/read/28966756/preventive-kidney-stones-continue-medical-education
#10
REVIEW
Farahnak Assadi, Mastaneh Moghtaderi
Nephrolithiasis is a common health problem across the globe with a prevalence of 15%-20%. Idiopathic hypercalciuria is the most common cause of nephrolithiasis, and calcium oxalate stones are the most common type of stones in idiopathic hypercalciuric patients. Calcium phosphate stones are frequently associated with other diseases such as renal tubular acidosis type 1, urinary tract infections, and hyperparathyroidism. Compared with flat abdominal film and renal sonography, a noncontrast helical computed tomography scan of the abdomen is the diagnostic procedure of choice for detection of small and radiolucent kidney stones with sensitivity and specificity of nearly 100%...
2017: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28951890/the-induction-of-oxalate-metabolism-in-vivo-is-more-effective-with-functional-microbial-communities-than-with-functional-microbial-species
#11
Aaron W Miller, Colin Dale, M Denise Dearing
For mammals, oxalate enters the body through the diet or is endogenously produced by the liver; it is removed by microbial oxalate metabolism in the gut and/or excretion in feces or urine. Deficiencies in any one of the these pathways can lead to complications, such as calcium oxalate urinary stones. While considerable research has been conducted on individual oxalate-degrading bacterial isolates, interactions between oxalate and the gut microbiota as a whole are unknown. We examined the reduction in oxalate excretion in a rat model following oral administration of fecal microbes from a mammalian herbivore adapted to a high oxalate diet or to fecal transplants consisting of two different formulations of mixed oxalate-degrading isolates...
September 2017: MSystems
https://www.readbyqxmd.com/read/28923463/hyperparathyroidism
#12
REVIEW
John P Bilezikian, Leonardo Bandeira, Aliya Khan, Natalie E Cusano
Primary hyperparathyroidism is a common endocrine disorder of calcium metabolism characterised by hypercalcaemia and elevated or inappropriately normal concentrations of parathyroid hormone. Almost always, primary hyperparathyroidism is due to a benign overgrowth of parathyroid tissue either as a single gland (80% of cases) or as a multiple gland disorder (15-20% of cases). Primary hyperparathyroidism is generally discovered when asymptomatic but the disease always has the potential to become symptomatic, resulting in bone loss and kidney stones...
September 15, 2017: Lancet
https://www.readbyqxmd.com/read/28883679/the-relationship-between-nephrolithiasis-risk-with-body-fat-measured-by-body-composition-analyzer-in-obese-people
#13
Zohreh Bartani, Behzad Heydarpour, Ahmad Alijani, Masoud Sadeghi
BACKGROUND: Nephrolithiasis (kidney stones) continues to be a major cause of morbidity and healthcare spending that visceral and subcutaneous adipose tissue may associate with kidney stone formation. This study aimed to investigate the relationship between nephrolithiasis with visceral fat scale in obese people in Western Iran for the first time. MATERIALS AND METHODS: In 2017, 103 participants with BMI≥30 kg/m(2) were selected for the present study. The participants were divided into two groups, 52 as case group (having the kidney stone) and 58 as healthy control group (no kidney stone or history of the kidney stone or any other disease)...
June 2017: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28882031/a-multiregional-italian-cohort-of-24-hour-urine-metabolic-evaluation-in-renal-stone-formers
#14
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/28875258/molecular-analysis-of-oxalate-induced-endoplasmic-reticulum-stress-mediated-apoptosis-in-the-pathogenesis-of-kidney-stone-disease
#15
Albert Abhishek, Shaly Benita, Monika Kumari, Divya Ganesan, Eldho Paul, Ponnusamy Sasikumar, Ayyavu Mahesh, Subramani Yuvaraj, Tharmarajan Ramprasath, Govindan Sadasivam Selvam
Oxalate, a non-essential end product of metabolism, causes hyperoxaluria and eventually calcium oxalate (CaOx) stone disease. Kidney cells exposed to oxalate stress results in generation of reactive oxygen species (ROS) and progression of stone formation. Perturbations in endoplasmic reticulum (ER) result in accumulation of misfolded proteins and Ca(2+) ions homeostasis imbalance and serve as a common pathway for various diseases, including kidney disorders. ER stress induces up-regulation of pro-survival protein glucose-regulated protein 78 (GRP78) and pro-apoptotic signaling protein C/EBP homologous protein (CHOP)...
November 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28868511/optimization-of-urinary-dipstick-ph-are-multiple-dipstick-ph-readings-reliably-comparable-to-commercial-24-hour-urinary-ph
#16
Joel E Abbott, Daniel L Miller, William Shi, David Wenzler, Fuad F Elkhoury, Nishant D Patel, Roger L Sur
PURPOSE: Accurate measurement of pH is necessary to guide medical management of nephrolithiasis. Urinary dipsticks offer a convenient method to measure pH, but prior studies have only assessed the accuracy of a single, spot dipstick. Given the known diurnal variation in pH, a single dipstick pH is unlikely to reflect the average daily urinary pH. Our goal was to determine whether multiple dipstick pH readings would be reliably comparable to pH from a 24-hour urine analysis. MATERIALS AND METHODS: Kidney stone patients undergoing a 24-hour urine collection were enrolled and took images of dipsticks from their first 3 voids concurrently with the 24-hour collection...
September 2017: Investigative and Clinical Urology
https://www.readbyqxmd.com/read/28830863/effectiveness-of-treatment-modalities-on-kidney-stone-recurrence
#17
Anna L Zisman
Nephrolithiasis is highly prevalent across all demographic groups in the Western world and beyond, and its incidence rates are rising. In addition to the morbidity of the acute event, stone disease often becomes a lifelong problem that requires preventative therapy to diminish ongoing morbidity. Across the majority of stone types, increased fluid intake and targeted dietary modifications are mainstays of therapy. Specific dietary interventions associated with reduced calcium stone risk include adequate dietary calcium intake and restriction of sodium, protein, and oxalate intake, among others...
October 6, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28827106/evaluation-of-biofilm-induced-urinary-infection-stone-formation-in-a-novel-laboratory-model-system
#18
Trace Hobbs, Logan N Schultz, Ellen G Lauchnor, Robin Gerlach, Dirk Lange
PURPOSE: Infection stones, which comprise approximately 15% of all urinary tract stones, are induced by infection with urease-positive pathogens. The bacteria in the stone matrix present significant treatment impediments compared to metabolic kidney stones. While much is known about how urinary composition regulates metabolic stone formation, there is a general lack of knowledge of which urinary factors regulate the rate of infection stone formation. Unfortunately more in-depth research into infection stones is limited by the lack of suitable models for real-time study of bacterial biofilm formation and stone formation under varying conditions...
August 19, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28774309/fungal-endophytes-associated-with-viola-odorata-linn-as-bioresource-for-pancreatic-lipase-inhibitors
#19
M Katoch, A Paul, G Singh, S N C Sridhar
BACKGROUND: As per the recent statistical reports of World Health Organisation (WHO), 13% of total global population is obese. Orlistat remains to be the only drug approved for the long term treatment of obesity. Recent findings highlighted severe adverse effects of orlistat that included hepatotoxicity, gall stones, kidney stones and acute pancreatitis. Therefore, search for new drug is required. The investigations based on endophytic natural products would prove pivotal in the global fight against this health issue...
August 3, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28770533/hyperuricemia-type-2-diabetes-mellitus-and-hypertension-an-emerging-association
#20
REVIEW
Ibrahim Mortada
Uric acid is the final oxidation product of purine metabolism in circulation and has been associated with the occurrence of gout and kidney stones. Type 2 diabetes mellitus and hypertension are two important public health challenges, and both are linked to increased risk of cardiovascular events. Hyperuricemia has recently emerged as an independent risk factor in the development of type 2 diabetes mellitus and hypertension through several proposed mechanisms. Few clinical trials investigated the use of uric acid lowering agents in the management of these two disease entities; however, their results provided encouraging evidence to a potential role for these agents in fighting disease burden...
September 2017: Current Hypertension Reports
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