keyword
MENU ▼
Read by QxMD icon Read
search

stone kidney

keyword
https://www.readbyqxmd.com/read/27913855/what-can-the-microstructure-of-stones-tell-us
#1
REVIEW
James C Williams, Elaine Worcester, James E Lingeman
How stones are retained within the kidney while small in size is still not fully understood. In this paper, we show two examples of how stones are retained during early growth: one is growth on Randall's (interstitial) plaque, and the other is growth on mineral that has formed as a luminal plug in a terminal collecting duct. These two mechanisms of stone retention during early growth have distinctive morphologic features that can be seen by methods that show the microscopic structure of the stones. Stones growing on Randall's plaque display an apatite region that is typically not large in size (<0...
December 2, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27913854/the-role-of-macromolecules-in-the-formation-of-kidney-stones
#2
REVIEW
Jeffrey D Rimer, Ann M Kolbach-Mandel, Michael D Ward, Jeffrey A Wesson
The formation of crystal aggregates, one of the critical processes in kidney stone pathogenesis, involves interactions between crystals (predominantly calcium oxalate monohydrate, COM) and urinary constituents (e.g., proteins), which serve as an adhesive "glue" between crystals in stones. To develop a better understanding of the protein-crystal interactions that lead to crystal aggregation, we have measured the effect of model proteins on bulk COM crystal properties as well as their adsorption on crystal surfaces using three synthetic polyanions: poly(aspartic acid) (polyD), poly(glutamic acid) (polyE), and poly(acrylic acid) (polyAA)...
December 2, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27913853/the-role-of-intestinal-oxalate-transport-in-hyperoxaluria-and-the-formation-of-kidney-stones-in-animals-and-man
#3
REVIEW
Jonathan M Whittamore, Marguerite Hatch
The intestine exerts a considerable influence over urinary oxalate in two ways, through the absorption of dietary oxalate and by serving as an adaptive extra-renal pathway for elimination of this waste metabolite. Knowledge of the mechanisms responsible for oxalate absorption and secretion by the intestine therefore have significant implications for understanding the etiology of hyperoxaluria, as well as offering potential targets for future treatment strategies for calcium oxalate kidney stone disease. In this review, we present the recent developments and advances in this area over the past 10 years, and put to the test some of the new ideas that have emerged during this time, using human and mouse models...
December 2, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27913238/contemporary-ureteroscopic-management-of-renal-stones
#4
S Proietti, T Knoll, G Giusti
The advancements in the endourological armamentarium and the evolution of ureteroscopes with the advent of fiberoptic first and then digital technology, the introduction of holmium laser lithotripters, together with the increasing number of requests for minimally invasive procedures has ameliorated outcomes, patients' safety and comfort, making the use of flexible ureteroscopy for urinary calculi increasingly attractive and widespread among urological community. Due to its high stone-free rates and low morbidity, flexible ureteroscopy has become a viable option for the treatment of renal stones...
November 29, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27909619/the-role-of-ultra-mini-percutaneous-nephrolithotomy-in-the-treatment-of-kidney-stones
#5
Abdulkadir Tepeler, İsmail Başıbüyük, Muhammed Tosun, Abdullah Armağan
OBJECTIVE: In our study we aimed to evaluate outcomes of ultra-mini-percutaneous nephrolithotomy (UMP) performed for the treatment of kidney stones. MATERIAL AND METHODS: Between October 2014 and September 2015, a single surgeon performed UMP on a total of 49 consecutive patients with symptomatic kidney stones at our center. Pregnants, anticogulant users, patients with bleeding diathesis pyonephrosis, and partial/complete staghorn stones were excluded from the study...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27900407/do-inhibitors-of-crystallisation-play-any-role-in-the-prevention-of-kidney-stones-a-critique
#6
REVIEW
William G Robertson
A critical examination of data in the literature and in as yet unpublished laboratory records on the possible role of so-called inhibitors of crystallisation in preventing the formation of calcium-containing kidney stones leads to the following conclusions. So-called inhibitors of spontaneous "self-nucleation" are unlikely to play any role in the initiation of the crystallisation of CaOx or CaP in urine because excessive urinary supersaturation of urine with respect to these salts dominates the onset of "self-nucleation" within the normal time frame of the transit of tubular fluid through the nephron (3-4 min)...
November 29, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27900406/what-does-the-crystallography-of-stones-tell-us-about-their-formation
#7
REVIEW
Peter Rez
The mineral phase makes up most of the mass of a kidney stone. Minerals all come in the form of crystals that are regular arrangements of atoms or molecular groupings at the atomic scale, bounded macroscopically by well-defined crystal faces. Pathologic nephroliths are a polycrystalline aggregate of submicron crystals. Organic macromolecules clearly have an important role in either promoting or preventing aggregation and in altering the morphology of individual submicron crystals by influencing the surface energies of different faces...
November 29, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27896392/tubular-and-genetic-disorders-associated-with-kidney-stones
#8
REVIEW
Nilufar Mohebbi, Pietro Manuel Ferraro, Giovanni Gambaro, Robert Unwin
This concise review summarizes our current understanding and the recent developments in genetics and related renal tubular disorders that have been linked with, or have been shown to be causal in, renal stone disease. The aim is to provide a readily accessible quick and easy update for urologists, nephrologists and endocrine or metabolic physicians whose practice involves the diagnosis and management of nephrolithiasis. An important message is to always consider a seemingly rare, and usually genetic, cause of kidney stones, since some of these are emerging as more common than originally thought, especially in adult clinical practice in which a family history of stones is a common finding...
November 28, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27896391/histological-aspects-of-the-fixed-particle-model-of-stone-formation-animal-studies
#9
REVIEW
Saeed R Khan
Crystallization by itself is not harmful as long as the crystals are not retained in the kidneys and are allowed to pass freely down the renal tubules to be excreted in the urine. A number of theories have been proposed, and studies performed, to determine the mechanisms involved in crystal retention within the kidneys. It has been suggested that urinary transit through the nephron is too fast for crystals to grow large enough to be retained. Thus, free particle mechanism alone cannot lead to stone formation, and there must be a mechanism for crystal fixation within the kidneys...
November 28, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27889982/external-validation-and-evaluation-of-reliability-and-validity-of-the-triple-d-score-to-predict-stone-free-status-after-shock-wave-lithotripsy
#10
Faruk Ozgor, Muhammed Tosun, Yunus Kayali, Metin Savun, Murat Binbay, Abdulkadir Tepeler
OBJECTIVE: The Triple D scoring system is defined as novel and simple nomogram using the main parameters (skin-to-stone distance, stone density, and volume) in order to indicate most appropriate patients for shock-wave lithotripsy (SWL). We aimed to evaluate the accuracy of the Triple D scoring system in predicting SWL success rates. PATIENTS AND METHODS: In two tertiary academic centers, charts were retrospectively analyzed of patients who had, between January 2014 and May 2016, been treated by SWL for radiopaque kidney stones...
November 27, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27889419/validation-and-reliability-of-the-wisconsin-stone-quality-of-life-questionnaire
#11
Kristina L Penniston, Jodi A Antonelli, Davis P Viprakasit, Timothy D Averch, Sri Sivalingam, Roger L Sur, Vernon M Pais, Ben H Chew, Vincent G Bird, Stephen Y Nakada
INTRODUCTION: The Wisconsin Stone Quality of Life questionnaire (WISQOL) is a disease-specific, health-related quality of life (HRQOL) measure designed for patients who form kidney stones. The purpose of this study was to demonstrate the external and convergent validity of the WISQOL questionnaire and assess its psychometric properties. METHODS: The WISQOL creation site (development sample) and 8 geographically diverse centers in the United States and Canada (consortium sample) recruited patients with a history of kidney stones...
November 23, 2016: Journal of Urology
https://www.readbyqxmd.com/read/27889417/dietary-zinc-and-incident-calcium-kidney-stones-in-adolescence
#12
Gregory E Tasian, Michelle E Ross, Lihai Song, Robert W Grundmeier, James Massey, Michelle R Denburg, Lawrence Copelovitch, Steven Warner, Thomas Chi, David W Killilea, Marshall L Stoller, Susan L Furth
PURPOSE: To determine the association between dietary zinc intake and incident calcium kidney stones and examine the relationship between dietary zinc intake and urinary zinc excretion among adolescents. MATERIAL AND METHODS: This study was a nested case-control study conducted within a large pediatric healthcare system. Three 24-hour dietary recalls and spot urine chemistries were obtained for 30 participants aged 12-18 years with a first idiopathic calcium-based kidney stone and 30 healthy controls, matched on age, sex, race, and month of enrollment...
November 23, 2016: Journal of Urology
https://www.readbyqxmd.com/read/27885825/multiphase-fluid-solid-coupled-analysis-of-shock-bubble-stone-interaction-in-shockwave-lithotripsy
#13
K G Wang
A novel multiphase fluid-solid coupled computational framework is applied to investigate the interaction of a kidney stone immersed in liquid with a lithotripsy shock wave (LSW) and a gas bubble near the stone. The main objective is to elucidate the effects of a bubble in the shock path to the elastic and fracture behaviors of the stone. The computational framework couples a finite volume two-phase computational fluid dynamics (CFD) solver with a finite element (FE) computational solid dynamics (CSD) solver...
November 24, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27878116/minijfil%C3%A2-a-new-safe-and-effective-stent-for-well-tolerated-repeated-extracorporeal-shockwave-lithotripsy-or-ureteroscopy-for-medium-to-large-kidney-stones
#14
Benoit Vogt, Francois-Noel Desfemmes, Arnaud Desgrippes, Yves Ponsot
BACKGROUND: Percutaneous nephrolithotomy (PCNL) is recommended for treating staghorn stones or stones measuring > 20 mm. Extracorporeal shockwave lithotripsy (ESWL) or flexible ureteroscopy (URS) may be used as a complement. However, PCNL can cause trauma to the kidney parenchyma, and patients may find a noninvasive procedure, such as ESWL, to be more attractive. OBJECTIVES: The aim of this study was to evaluate the clinical efficiency of MiniJFil® stenting associated with ESWL or second-line URS for the treatment of medium-to-large kidney stones...
September 2016: Nephro-urology Monthly
https://www.readbyqxmd.com/read/27868099/endourologic-and-open-ureterolithotomy-and-common-sheath-reimplant-for-large-bladder-and-distal-ureteral-calculi
#15
Madeline Cancian, Joseph Brito, Joseph Renzulli, Gyan Pareek
A twenty-eight-year-old female with a history of suprapubic pain and recurrent urinary tract infections presents for urology referral with a kidney, ureter, and bladder radiograph showing a 4.4 cm bladder calculus and 6.5 cm distal left ureteral stone. She underwent effective cystolitholapaxy of the bladder stone. Endourologic attempt (left ureteroscopy) was unsuccessful because of ureteral stone burden. Findings at ureteroscopy revealed a duplicated system on the left with the lower pole moiety joining just proximal to the ureteral orifice...
2016: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/27868097/percutaneous-nephrolithotomy-in-rare-bleeding-disorders-a-case-report-and-review-of-the-literature
#16
Ali Ersin Zumrutbas, Cihan Toktas, Aykut Baser, Omer Levent Tuncay
Surgery in patients with congenital or acquired coagulation defects has always been challenging and requires special care with a multidisciplinary approach. Percutaneous nephrolithotomy (PCNL) is a standard procedure performed in patients with kidney stones. Although prone to bleeding more than most of the widely performed surgical procedures, there are not much data regarding PCNL in patients with bleeding disorders or coagulation defects. There are only case reports or series with a small number of patients for the patients with common coagulation defects, including hemophilias...
2016: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/27864113/chenopodium-album-linn-leaves-prevent-ethylene-glycol-induced-urolithiasis-in-rats
#17
Indu Sikarwar, Yadu Nandan Dey, Manish M Wanjari, Ajay Sharma, Sudesh N Gaidhani, Ankush D Jadhav
ETHNOPHARMACOLOGICAL RELEVANCE: The leaves of Chenopodium album Linn. are traditionally used for correction of kidney diseases and urinary stones. The present work investigated the effect of methanolic and aqueous extracts of leaves of Chenopodium album on experimentally induced urolithiasis in rats to substantiate its traditional use as antilithiatic agent. MATERIALS AND METHODS: The leaf extract was standardized by HPLC. Urolithiasis was induced in rats by administration 0...
November 15, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27863777/concentration-of-serum-calcium-is-not-correlated-with-symptoms-or-severity-of-primary-hyperparathyroidism-an-examination-of-20-081-consecutive-adults
#18
Deva Boone, Douglas Politz, Jose Lopez, Jamie Mitchell, Kevin Parrack, James Norman
BACKGROUND: Guidelines for operative treatment of primary hyperparathyroidism include calcium levels >1 mg/dL above normal. We sought to determine whether greater calcium concentrations were associated with increased symptoms or disease severity. METHODS: A retrospective review of a prospectively maintained database of adults undergoing parathyroidectomy for primary hyperparathyroidism, grouped according to greatest preoperative calcium level: those patients with calcium concentrations between 10...
November 15, 2016: Surgery
https://www.readbyqxmd.com/read/27863458/bench-top-and-initial-clinical-evaluation-of-the-shockpulse-stone-eliminator%C3%A2-in-percutaneous-nephrolithotomy
#19
Andre Alessandro Matteliano, Thomas de Los Reyes, Ryan F Paterson, Dirk Lange, Michael Eric Lipkin, Ben Hall Chew
PURPOSE: Standardized bench testing of the new ShockPulseTM intracorporeal lithotripter was performed against three commercially available lithotripsy systems to determine differences and nuances in performance. MATERIALS & METHODS: The ShockPulse intracorporeal lithotripter was tested against the LUS-2TM, CyberWandTM and EMS LithoClastTM in a standardized bench setting using hard (Ultracal-30) and soft (Plaster of Paris) stone phantoms. An in vitro kidney model was used to record the time needed to fragment stone samples into retrievable sized pieces...
November 18, 2016: Journal of Endourology
https://www.readbyqxmd.com/read/27862806/a-prospective-and-randomised-trial-comparing-fluoroscopic-total-ultrasonographic-and-combined-guidance-for-renal-access-in-mini-percutaneous-nephrolithotomy
#20
Wei Zhu, Jiasheng Li, Jian Yuan, Yongda Liu, Shaw P Wan, Guanzhao Liu, Wenzhong Chen, Wenqi Wu, Jintai Luo, Dongliang Zhong, Defeng Qi, Ming Lei, Wen Zhong, Ze Zhang, Zhaohui He, Zhijian Zhao, Suilin Lu, Yuji Wu, Guohua Zeng
OBJECTIVE: To compare the safety and efficacy of fluoroscopic guidance (FG), total ultrasonographic guidance (USG), and combined ultrasonographic and fluoroscopic guidance (CG) for percutaneous renal access in mini-percutaneous nephrolithotomy (mini-PCNL). PATIENTS AND METHODS: The present study was conducted between July 2014 and May 2015 as a prospective randomised trial at the First Affiliated Hospital of Guangzhou Medical University. In all, 450 consecutive patients with renal stones of >2 cm were randomised to undergo FG, USG, or CG mini-PCNL (150 patients for each group)...
November 8, 2016: BJU International
keyword
keyword
56562
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"