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calcium urolithiasis

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https://www.readbyqxmd.com/read/29680902/contamination-of-soil-and-the-medicinal-plant-phyllanthus-niruri-linn-with-cadmium-in-ceramic-industrial-areas
#1
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
#2
Jiawei Luo, Aierken Tuerxun, Abuduwupuer Shataer, Abudukahaer Batuer, Chonghe Jiang, Yizhou Zhou, Zhilin Li, Donglong Cheng, 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, 0-18 and group B, >18 years old. The distributions of various stone compositions were analysed and correlated to the gender and age. RESULTS The mean age of group A was 3...
April 13, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29569213/prevalence-pathophysiological-mechanisms-and-factors-affecting-urolithiasis
#3
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...
March 22, 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
#4
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
#5
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
#6
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
#7
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
#8
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...
February 14, 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
#9
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
#10
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
#11
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
#12
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
#13
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...
February 5, 2018: Endocrine Research
https://www.readbyqxmd.com/read/29368300/hyperuricosuric-calcium-urolithiasis
#14
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...
January 24, 2018: Journal of Nephrology
https://www.readbyqxmd.com/read/29364405/-antiurolithic-activity-of-the-ethanolic-extract-of-ayacuchano-propolis-in-rats
#15
Rita López-Cabanillas, Ronal Huayanay-Conde, Cinthya Gonzales, Mahli Maguiña, Italo Granados, Mila Ccasani, Astrid Laguna, Ernesto León, Nuria Romero-Caballero, Jessenia Chacón
OBJECTIVES: To determine the antiurolytic activity of the ethanolic extract of Ayacuchan propolis in a preventive model of urolithiasis in rats. MATERIALS AND METHODS: A total of 45 male Sprague-Dawley albino rats were studied. The antiurolithic effect was analyzed in five groups of six animals each: blank, control (treated with 1 mL of 5% ethylene glycol and 1 mL of 5% ammonium chloride), and three experimental groups (treated with the ethanol extract of propolis at a daily dose of 250, 350, and 500 mg/kg, respectively)...
October 2017: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/29330993/chemical-composition-of-stones-in-paediatric-urolithiasis
#16
Kiran Imran, Mirza Naqi Zafar, Naureen Fatima, Uzma Ozair, Sajid Sultan, Syed Adibul Hasan Rizvi
BACKGROUND: Chemical composition of stones is one of the important diagnostic criteria for aetiology of stone formation and treatment to prevent recurrence. This paper reports composition of stones in children at a tertiary hospital by Fourier Transformation Infrared Spectroscopy (FTIR). METHODS: Between January-June 2015, 412 urinary stones from children were analysed by FTIR. Chi-square tests were used for the comparison of categorical measurements between groups...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29249235/kidney-stone-composition-in-the-kingdom-of-saudi-arabia
#17
Abdulrazack Amir, Brian R Matlaga, Justin B Ziemba, Salwa Sheikh
INTRODUCTION: Urolithiasis is a globally-distributed disease; however, its prevalence varies across countries and regions. Countries in the Middle East have been reported to have particularly high nephrolithiasis prevalence rates. To date, however, we have an incomplete understanding of the composition of stones seen in this region. Therefore, we performed a study to characterize stone composition over a 14-year period in the Eastern Province of the Kingdom of Saudi Arabia (KSA). MATERIALS AND METHODS: A retrospective review of all adult patients who had the composition of their upper urinary tract calculi analyzed at Johns Hopkins Aramco Healthcare (JHAH) between 1999 and 2013 was performed...
December 18, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/29227142/perineal-urethrostomy-to-treat-obstructive-urolithiasis-in-a-captive-hand-raised-steenbok-i-raphicerus-campestris-i
#18
Luke A Poore, Ross Hendry, Johan Steyl, Silke Pfitzer
The steenbok (Raphicerus campestris) is a small antelope of the family Bovidae native to the African continent. Urolithiasis, the formation of urinary calculi in the urinary tract, can be caused by a variety of factors such as diet, dehydration, infection and anatomical predisposition. Urolithiasis, with uroliths identified as magnesium calcium phosphate carbonate in composition, was diagnosed in a hand-reared 5-month-old steenbok. Perineal urethrostomy was performed as a component of the broad treatment regime that included fluid therapy, antibiotic and anti-inflammatory treatment...
December 8, 2017: Journal of the South African Veterinary Association
https://www.readbyqxmd.com/read/29197934/effects-of-statin-treatment-with-atorvastatin-on-urolithiasis-associated-urinary-metabolic-risk-factors-an-experimental-study
#19
Mustafa Zafer Temiz, Emrah Yuruk, Kasim Ertas, Oguzhan Zengi, Atilla Semercioz
PURPOSE: To investigate whether atorvastatin has favorable effects on urinary metabolic risk factors associated with urolithiasis. METHODS: Sixteen male Sprague-Dawley rats were randomly divided into two groups, and baseline spot and 24-h urine samples were collected. Distilled water and atorvastatin were administered to rats during 4 weeks in the control and atorvastatin groups, respectively. At the end of the experimental procedure, spot and 24-h urine samples were collected again...
February 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29189886/antiurolithiatic-effect-of-the-taraxasterol-on-ethylene-glycol-induced-kidney-calculi-in-male-rats
#20
Mahboubeh Yousefi Ghale-Salimi, Maryam Eidi, Nasser Ghaemi, Ramezan Ali Khavari-Nejad
Taraxasterol is one of the important constituents of Taraxacum officinale L. (Compositae) with antioxidant potential. The present study was designed to evaluate and compare the antiurolithiatic effects of taraxasterol and potassium citrate in the ethylene glycol induced urolithiatic rat. Urolithiasis was induced by ammonium chloride and ethylene glycol in adult male rats. Taraxasterol (2, 4 and 8 mg/kg) and potassium citrate (2.5 g/kg) were treated for 33 days by gavage. Then, the animals were anesthetized and weighted and blood, urine, liver and kidney sampling were done...
November 30, 2017: Urolithiasis
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