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calcium urolithiasis

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https://www.readbyqxmd.com/read/29901287/-characteristic-features-of-urinary-calcium-excretion-and-osteoporosis-risk-factors-in-patients-with-urolithiasis
#1
L S Demidko, V I Rudenko, V A Grigoryan, Yu L Demidko, M E Enikeev, Zh Sh Inoyatov, M V Amosova
RELEVANCE: The prevalence of urolithiasis and osteoporosis (OP) indicates that these diseases may be found concurrently in the same patient. The detection of risk factors for OP and disorders of calcium metabolism in patients with urolithiasis is of interest in the context of primary stone formation and metaphylaxis. AIM: To identify risk factors for osteoporosis and disorders of calcium metabolism in patients with urolithiasis. MATERIALS AND METHODS: Osteoporosis risk factors were studied in 45 urolithiasis patients undergoing surgical treatment...
May 2018: Urologii︠a︡
https://www.readbyqxmd.com/read/29846891/diagnosis-and-management-of-non-calcium-containing-stones-in-the-pediatric-population
#2
REVIEW
Saritha Ranabothu, Ari P Bernstein, Beth A Drzewiecki
Compared to adults, urolithiasis is less common in children, with a definite rise in incidence, especially among young adults (Tasian et al. in Clin J Am Soc Nephrol 11:488, 2016). In the last 25 years, the incidence in children has increased by approximately 6-10% annually, for reasons still unknown, with an associated significant increase in related health care-related expenditures (Hyams and Matlaga in Transl Androl Urol 3(3):278-83, 2014). It has been shown that there is twice as high a risk of chronic kidney disease (CKD) or end stage renal disease (ESRD) in stone formers compared to non-stone formers (Tasian et al...
May 30, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29808727/calcium-oxalate-urolithiasis-a-case-of-missing-microbes
#3
Carlos Alfredo Batagello, Manoj Monga, Aaron W Miller
INTRODUCTION: Urinary stone disease (USD) has known associations with the gut microbiota. Approximately 80% of kidney stones contain oxalate as a primary constituent and diverse oxalate-degrading bacteria exist within the human gut that may protect against USD. While bacteriotherapy represents a promising strategy to eliminate oxalate and reduce the risk of USD, oxalate-degrading probiotics have had limited success. To identify limitations of oxalate-degrading probiotics and refine development of bacteriotherapies to prevent USD, we review the literature associated with the gut microbiota and USD...
May 29, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29806749/the-effects-of-diuretics-on-mineral-and-bone-metabolism
#4
Uri S Alon
The effects of diuretics on water and electrolyte metabolism are well-established, but less known to the clinician are their effects on bone and mineral metabolism, and in particular on that of calcium homeostasis. In general, and clinically most relevant, diuretics acting at the thick ascending limb of the loop of Henle cause loss of calcium into the urine, thus making them a useful tool in treating hypercalcemia. However the hypercalciuria caused by loop diuretics may lead to the development of urolithiasis and nephrocalcinosis, as well as secondary hyperparathyroidism and bone disease...
March 2018: Pediatric Endocrinology Reviews: PER
https://www.readbyqxmd.com/read/29803667/relationships-between-enteral-nutrition-facts-and-urinary-stones-in-a-cohort-of-pediatric-patients-in-rehabilitation-from-severe-acquired-brain-injury
#5
Marco Pozzi, Federica Locatelli, Sara Galbiati, Elena Beretta, Carla Carnovale, Emilio Clementi, Sandra Strazzer
BACKGROUND & AIMS: Urolithiasis affects pediatric patients with severe acquired brain injury, in whom the role of several clinical variables and of the presence and composition of enteral nutrition has not been investigated. METHODS: Retrospective chart review on 371 pediatric patients with severe acquired brain injury. We used an essential electronic database to check the association between stones and enteral feeding. We then picked at random paper clinical records until we collected 20 and 20 complete records for patients with/without stones, not matched...
May 14, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29692509/spectrum-of-urinary-stone-composition-in-northwestern-rajasthan-using-fourier-transform-infrared-spectroscopy
#6
Amilal Bhat, Vikash Singh, Mahakshit Bhat, Vinay Kumar, Akshita Bhat
Introduction: The aim of this study was to evaluate the chemical composition of urinary stones and pattern of changes according to the patient's age in Northwestern Rajasthan using Fourier transform infrared (FTIR) spectroscopy. Materials and Methods: A prospective study of 1005 urolithiasis patients was carried out in two tertiary care centers from September 2012 to September 2016. Chemical composition of urinary stones was analyzed using FTIR spectroscopy, and a subgroup study based on the patient's age was done (8-12 years - Group A, 13-18 years - Group B, and >18 years - Group C)...
April 2018: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/29680902/contamination-of-soil-and-the-medicinal-plant-phyllanthus-niruri-linn-with-cadmium-in-ceramic-industrial-areas
#7
Vanessa Santana Vieira Santos, Karen Magalhães Arantes, Ester Luiza Gonçalves, Carlos Fernando Campos, Edimar Olegário de Campos Júnior, Antônio Marcos Machado de Oliveira, Boscolli Barbosa Pereira
Phyllanthus niruri is a plant that is used to prevent calcium oxalate crystallisation and to block the stone formation in urolithiasis. Contaminants in the environment can be readily taken up by medicinal plants due to their ability to absorb chemicals into their tissues. If contaminated plants are ingested, they have the potential to negatively affect human and environmental health. The aim of this study was to assess contamination in the soil and the medicinal plant P. niruri by cadmium (Cd) in ceramic industrial areas of Monte Carmelo, Brazil...
April 22, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29649901/kidney-stone-composition-in-third-world-areas-what-kashgar-tells-us
#8
Jiawei Luo, Aierken Tuerxun, Abuduwupuer Shataer, Abudukahaer Batuer, Chonghe Jiang, Yizhou Zhou, Zhilin Li, Donglong Chen, Yongda Liu
OBJECTIVE: To analyze urinary stone compositions in patients from Kashgar, China. MATERIALS AND METHODS: We analyzed the components of urinary stones in 732 consecutive patients with urolithiasis admitted to the First and Second People's Hospital of Kashgar Prefecture, Xinjiang, from July 2014 to November 2016. The patients were divided into two groups by ages: group A, 0 to 18 years and group B, >18 years old. The distributions of various stone compositions were analyzed and correlated with the gender and age...
May 14, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29569213/prevalence-pathophysiological-mechanisms-and-factors-affecting-urolithiasis
#9
REVIEW
Aslam Khan
The formation of urinary stone, urolithiasis, is one the oldest known disease affecting human throughout different civilizations and times. The exact pathophysiological mechanism of urolithiasis is not yet clear, as these calculi are of various types and too complex for simple understanding. A single theory cannot explain its formation; therefore, different theories are presented in various times for its explanation like free particle, fixed particle, Randall's plaque theory. In addition, various factors and components are identified that play an important role in the formation of these urinary calculi...
May 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29524975/urine-kidney-injury-markers-do-not-increase-following-gastric-bypass-a-multi-center-cross-sectional-study
#10
Bryan D Hinck, Ricardo Miyaoka, James E Lingeman, Dean G Assimos, Brian R Matlaga, Rocky Pramanik, John Asplin, Benjamin Cohen, Manoj Monga
INTRODUCTION: To determine if markers of kidney injury correlate with urinary oxalate excretion. If so, such biomarkers might be early predictors of oxalate nephropathy. Gastric bypass surgery for obesity is known to be associated with postoperative hyperoxaluria, which can lead to urolithiasis and kidney damage. MATERIALS AND METHODS: Patients were recruited from four large academic centers > 6 months following completion of gastric bypass surgery. Patients provided a spot urine sample for analysis of three markers of kidney injury: 8-iso-Prostaglandin F2 α, N-acetyl- β -D-Glucosaminidase, and Neutrophil gelatinase-associated lipocalin...
February 2018: Canadian Journal of Urology
https://www.readbyqxmd.com/read/29524246/an-experimental-model-for-calcium-carbonate-urolithiasis-in-goats
#11
Meredyth L Jones, Brandon J Dominguez, Michael A Deveau
BACKGROUND: Calcium carbonate is a common urolith type in small ruminants with no high-yield experimental model to evaluate animal susceptibility or preventative measure response. HYPOTHESIS: That novel plastic winged implants would allow accumulation and quantification of calcium carbonate calculus formation in goats on a high-calcium diet and identify individual variation between goats in the mass of calculi produced. ANIMALS: Eight nonpregnant 3- and 4-year-old Boer-cross does, weighing 22...
March 10, 2018: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29515627/kidney-stone-disease-an-update-on-current-concepts
#12
REVIEW
Tilahun Alelign, Beyene Petros
Kidney stone disease is a crystal concretion formed usually within the kidneys. It is an increasing urological disorder of human health, affecting about 12% of the world population. It has been associated with an increased risk of end-stage renal failure. The etiology of kidney stone is multifactorial. The most common type of kidney stone is calcium oxalate formed at Randall's plaque on the renal papillary surfaces. The mechanism of stone formation is a complex process which results from several physicochemical events including supersaturation, nucleation, growth, aggregation, and retention of urinary stone constituents within tubular cells...
2018: Advances in Urology
https://www.readbyqxmd.com/read/29488068/heavy-metal-components-in-blood-and-urinary-stones-of-urolithiasis-patients
#13
Yunhe Yen, Borshuh Cheng, Changchung Chan, Chiwei Lin, Hsiuling Chen
Lifestyle, food intake, and exposure to chemicals are potential risk factors for the development of calcium urolithiasis. Pb, Cd, and Hg have been proved to cause renal illness, and urinary tract stones might be caused by exposure to metals. Therefore, this study aimed to measure the concentration of metals in urinary tract stones and blood simultaneously in urolithiasis patients. Moreover, we intended to determine whether urinary tract stones can be regarded as a biomarker of exposure or an effect marker in a population with environmental exposure to metals...
February 27, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29454539/quantification-of-the-risk-of-urinary-calcium-stone-formation-in-the-urine-collected-at-2-times-of-the-day-in-a-group-of-children-studied-to-rule-out-prelithiasis
#14
Víctor M García Nieto, Xochitl Illian Pérez Bastida, María Salvador Cañibano, Victoria E García Rodríguez, Margarita Monge Zamorano, María Isabel Luis Yanes
BACKGROUND: Various genetic and environmental factors are involved in urolithiasis. The 2 most common metabolic abnormalities are the increase in urinary calcium and low urinary citrate excretion. The ratio calculated between the concentrations of both substances is a good risk marker for the formation of calcium stones. OBJECTIVES: To determine whether the risk of urinary calcium stone formation changes throughout the day in the same patient. METHODS: We studied 56 children (23V, 33M) to check if they had prelithiasis...
May 2018: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/29432040/protective-roles-of-flavonoids-and-flavonoid-rich-plant-extracts-against-urolithiasis-a-review
#15
Xiangquan Zeng, Yu Xi, Weibo Jiang
In the urinary system, urolithiasis is the third prevalent disorder which causes severe pain in individuals. Urinary stones are composed of calcium oxalate (CaOx) and calcium phosphate in approximately 80% of patients. Although various drugs and surgery operations are used to treat the disease, side effects of drugs and the high recurrence after therapy in patients cannot be ignored. Flavonoids are a large group of plant polyphenols with presumed beneficial effects on several common diseases. Whereas, a very few have reached clinical use...
February 12, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29423725/the-impact-of-body-mass-index-on-quantitative-24-h-urine-chemistries-in-stone-forming-patients-a-systematic-review-and-meta-analysis
#16
Qing Wang, Weijie Hu, Yuchao Lu, Henglong Hu, Jiaqiao Zhang, Shaogang Wang
To study the impact of body mass index (BMI) on quantitative 24-h urine chemistries in stone forming patients and to explore how overweight and obesity contribute to urolithiasis. A systematic search of PubMed, EMBASE, Cochrane Library, and Web of Science was performed in July 2017 and updated in October 2017 to detect relevant studies. After that, we screened all the relevant articles in accordance with the predetermined inclusion and exclusion criteria. Data of eligible studies were extracted, and then, a meta-analysis was conducted via RevMan 5...
February 8, 2018: Urolithiasis
https://www.readbyqxmd.com/read/29416283/metabolic-evaluation-of-children-with-urolithiasis
#17
Vijayabhaskar Reddy Gouru, Vedamurthy Reddy Pogula, Surya Prakash Vaddi, Venu Manne, Ranadheer Byram, Lalith Sagar Kadiyala
Aim: The aim of the study is to identify the prevalence of metabolic abnormalities in children with urolithiasis. Materials and Methods: This is a prospective study; all children below 15 years who are found to have urolithiasis were prospectively evaluated with relevant history, clinical examination, and urine and serum testing. Metabolic workup includes complete urine examination, urine culture and sensitivity, and 24-h urinary analysis (lithorisk profile). Results: A total of 55 patients are included in the study...
January 2018: Urology Annals
https://www.readbyqxmd.com/read/29406057/urinary-stone-disease-diagnosis-medical-therapy-and-surgical-management
#18
REVIEW
Wesley W Ludwig, Brian R Matlaga
Clinical suspicion of urolithiasis should be evaluated with low-dose computed tomography as the first-line imaging modality for nonpregnant, adult patients. A period of observation may be appropriate for ureteral stones less than 10 mm, and medical expulsive therapy may be beneficial for facilitating passage of distal ureteral stones. Regardless of stone type, patients should adhere to a low-sodium diet and attempt to achieve a urine volume of more than 2.5 L daily. Individuals with calcium stones should maintain a normal calcium diet, and if stones persist, citrate therapy or thiazide diuretics in the setting of hypercalciuria may be indicated...
March 2018: Medical Clinics of North America
https://www.readbyqxmd.com/read/29400579/occult-urolithiasis-in-asymptomatic-primary-hyperparathyroidism
#19
Yu-Kwang Donovan Tay, Minghao Liu, Leonardo Bandeira, Mariana Bucovsky, James A Lee, Shonni J Silverberg, Marcella D Walker
OBJECTIVE: Recent international guidelines suggest renal imaging to detect occult urolithiasis in all patients with asymptomatic primary hyperparathyroidism (PHPT), but data regarding their prevalence and associated risk factors are limited. We evaluated the prevalence and risk factors for occult urolithiasis. METHODS: Cross-sectional analysis of 96 asymptomatic PHPT patients from a university hospital in the United States with and without occult nephrolithiasis...
May 2018: Endocrine Research
https://www.readbyqxmd.com/read/29368300/hyperuricosuric-calcium-urolithiasis
#20
REVIEW
Orson W Moe, Li Hao Richie Xu
Hyperuricosuric calcium urolithiasis is a condition of mixed calcium oxalate stones characterized by hyperuricosuria either in isolation or in conjunction with other risk factors for calcium oxalate stones such as hypercalciuria, hyperoxaluria, and hypocitraturia. There are three proposed physicochemical models of pathogenesis where urate in its crystalline phase via heterogeneous nucleation, in its colloidal phase via removal of crystallization inhibitors, and in solution via precipitation crystallization, can all increase propensity to calcium oxalate precipitation...
April 2018: Journal of Nephrology
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