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calcium urolithiasis

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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...
December 2, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29189886/antiurolithiatic-effect-of-the-taraxasterol-on-ethylene-glycol-induced-kidney-calculi-in-male-rats
#13
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
https://www.readbyqxmd.com/read/29181438/parsley-mechanism-as-antiurolithiasis-remedy
#14
Fayed Al-Yousofy, Hussein Gumaih, Hassan Ibrahim, Afrah Alasbahy
Parsley is a medicinal plant used widely in urolithiasis. The present study aimed to evaluate the antiurolithiatic effect of parsley and its mechanism. 24 rats divided into four groups: group A (negative control), group B (positive control), group C (cystone® group) and group D (parsley group). Group B were treated with EG and Ammonium chloride (AC). Group C were treated as B plus cystone® and group D was treated as B plus parsley. The period of experiment was 15 days. Urine samples were analysis on days 0 and 15 days...
2017: American Journal of Clinical and Experimental Urology
https://www.readbyqxmd.com/read/29169771/antiurolithiatic-activity-of-natural-constituents-isolated-from-aerva-lanata
#15
Basavaraj M Dinnimath, Sunil S Jalalpure, Umesh K Patil
BACKGROUND: Pashanabheda is used as antiurolithiatic in Ayurveda. In the present study, Aerva lanata (L) Juss. ex. Schult (Amaranthaceae) from Western Ghats of India was selected for isolation of active constituents and screening for antiurolithiatic potentials. OBJECTIVE: Screening of compounds isolated from A. lanata for antiurolithiatic potentials. MATERIALS AND METHODS: Ethylene glycol (0.75% v/v) induced urolithiasis model was used to study the antiurolithiatic activity in male Wistar albino rats...
October 2017: Journal of Ayurveda and Integrative Medicine
https://www.readbyqxmd.com/read/29169584/calcium-in-the-prevention-of-postmenopausal-osteoporosis-emas-clinical-guide
#16
Antonio Cano, Peter Chedraui, Dimitrios G Goulis, Patrice Lopes, Gita Mishra, Alfred Mueck, Levent M Senturk, Tommaso Simoncini, John C Stevenson, Petra Stute, Pauliina Tuomikoski, Margaret Rees, Irene Lambrinoudaki
INTRODUCTION: Postmenopausal osteoporosis is a highly prevalent disease. Prevention through lifestyle measures includes an adequate calcium intake. Despite the guidance provided by scientific societies and governmental bodies worldwide, many issues remain unresolved. AIMS: To provide evidence regarding the impact of calcium intake on the prevention of postmenopausal osteoporosis and critically appraise current guidelines. MATERIALS AND METHODS: Literature review and consensus of expert opinion...
January 2018: Maturitas
https://www.readbyqxmd.com/read/29162379/-epidemiology-of-urolithiasis-in-french-west-indies-a-retrospective-study
#17
K Kaulanjan, A Cerruti, V Galantine, C Laine, J Rose Dite Modestine, G Gourtaud, C Senechal, V Roux, R Eyraud, P Blanchet, L Brureau
INTRODUCTION: The incidence of urolithiasis is increasing with dietary changes especially in developed countries. Guadeloupe is a French department overseas where western diet meets traditional local food. The objective was to describe and analyze the epidemiology of urolithiasis in Guadeloupe. MATERIAL AND METHODS: We conducted a retrospective single-center study throughout the year 2015 on patients hospitalized for urolithiasis at University Hospital of Pointe-à-Pitre...
November 18, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/29154708/urethral-diverticulum-and-urolithiasis-in-a-female-guinea-pig-cavia-porcellus
#18
Lily A B Parkinson, Jennifer C Hausmann, Robert J Hardie, Megan A Mickelson, Kurt K Sladky
CASE DESCRIPTION A 5-year-old sexually intact female guinea pig was evaluated because of mild dysuria and a subcutaneous mass located cranioventral to the urogenital openings. CLINICAL FINDINGS Non-contrast-enhanced CT and surgical exploration of the distal aspect of the urethra revealed a urethral diverticulum with an intraluminal urolith. Analysis revealed that the urolith was composed of calcium carbonate and struvite. TREATMENT AND OUTCOME The urolith was surgically removed and ablation of the urethral diverticulum was attempted...
December 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29145836/clinical-utility-of-computed-tomography-hounsfield-characterization-for-percutaneous-nephrolithotomy-a-cross-sectional-study
#19
Andrea Gallioli, Elisa De Lorenzis, Luca Boeri, Maurizio Delor, Stefano Paolo Zanetti, Fabrizio Longo, Alberto Trinchieri, Emanuele Montanari
BACKGROUND: Computed Tomography (CT) is considered the gold-standard for the pre-operative evaluation of urolithiasis. However, no Hounsfield (HU) variable capable of differentiating stone types has been clearly identified. The aim of this study is to assess the predictive value of HU parameters on CT for determining stone composition and outcomes in percutaneous nephrolithotomy (PCNL). METHODS: Seventy seven consecutive cases of PCNL between 2011 and 2016 were divided into 4 groups: 40 (52%) calcium, 26 (34%) uric acid, 5 (6%) struvite and 6 (8%) cystine stones...
November 16, 2017: BMC Urology
https://www.readbyqxmd.com/read/29145146/evaluation-of-anti-urolithiatic-and-diuretic-activities-of-watermelon-citrullus-lanatus-using-in-vivo-and-in-vitro-experiments
#20
Waqar Ahmed Siddiqui, Muhammad Shahzad, Arham Shabbir, Ali Ahmad
Traditionally, Citrullus lanatus is known to have protective properties in kidney diseases and for having the ability to clear urine. Current study aims to validate the traditional uses of C. lanatus by evaluation of anti-urolithiatic and diuretic activities using in vivo and in vitro experiments. Male Wistar rats were used for in vivo anti-urolithiatic and diuretic activities. Supersaturated solution of calcium and oxalate was used for in vitro crystallization study. Hematoxylin & eosin staining was used for histopathological evaluation of kidney...
November 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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