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https://www.readbyqxmd.com/read/28342804/easy-to-use-equations-for-the-estimation-of-urine-relative-saturation-in-the-assessment-of-risk-of-recurrence-in-urinary-stones-formers
#1
Geneviève Plante, Denis Ouimet, Robert Robitaille
It is a fact that recurrence of urinary stones is a common medical problem. One of the key factors used in determining the risk of urinary stone-formation is the urine relative saturation in the major constituents of lithiasis. Nomograms were developed in the 1970's to estimate the relative saturation of urine. We present here easy-to-use mathematical equations derived from these nomograms. These equations can be integrated directly in the LIS of any laboratories, and can be used as a tool in the treatment and prevention of recurrent stone-formation...
March 22, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28338309/impact-of-personalized-three-dimensional-3d-printed-pelvicalyceal-system-models-on-patient-information-in-percutaneous-nephrolithotripsy-surgery-a-pilot-study
#2
Hasan Anil Atalay, H Lütfi Canat, Volkan Ülker, İlter Alkan, Ünsal Özkuvanci, Fatih Altunrende
OBJECTIVE: To investigate the impact of personalized three dimensional (3D) printed pelvicalyceal system models on patient information before percutaneous nephrolithotripsy surgery. MATERIAL AND METHODS: Patients with unilateral complex renal stones with indicatation of percutaneous nephrolithotripsy surgery were selected. Usable data of patients were obtained from CT scans as Digital Imaging and Communications in Medicine (DICOM) format. Mimics software version 16...
March 24, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28335594/skeletal-transformation-of-a-classical-fullerene-c88-into-a-non-classical-fullerene-chloride-c84cl30-bearing-quaternary-sequentially-fused-pentagons
#3
Fei Jin, Shangfeng Yang, Erhard Kemnitz, Sergej I Trojanov
A classical fullerene is composed of hexagons and pentagons only, and its stability is generally determined by the Isolated-Pentagon-Rule (IPR). Herein, high-temperature chlorination of a mixture containing a classical IPR-obeying fullerene C88 resulted in isolation and X-ray crystallographic characterization of non-IPR, non-classical (NC) fullerene chloride C84(NC2)Cl30 (1) containing two heptagons. The carbon cage in C84(NC2)Cl30 contains 14 pentagons, 12 of which form two pairs of fused pentagons and two groups of quaternary sequentially fused pentagons, which have never been observed in re-ported carbon cages...
March 24, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28331937/whey-protein-and-albumin-effects-upon-urinary-risk-factors-for-stone-formation
#4
Camila Mithie Hattori, Hans-Göran Tiselius, Ita Pfeferman Heilberg
Protein supplements are consumed for an expected increase in muscle mass and improved exercise performance, but as their impact on lithogenic parameters are unknown, we aimed to evaluate the effects of Whey protein (WP) and Albumin upon the risk factors for nephrolithiasis. WP or Albumin supplements (one scoop/day) were administered for 3 days to 18 healthy volunteers, with 1-week washout period between them. Serum and 24-h urine samples were collected at baseline and after completing each intervention. All participants were asked to replicate their baseline diet during the subsequent urine collection...
March 22, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28331214/antihypertensive-medications-and-the-risk-of-kidney-stones-in-older-adults-a-retrospective-cohort-study
#5
R Todd Alexander, Eric McArthur, Racquel Jandoc, Blayne Welk, Jade S Hayward, Arsh K Jain, Branko Braam, Veit Flockerzi, Amit X Garg, Robert Ross Quinn
Antihypertensives are widely prescribed and could influence kidney stone risk by altering urinary calcium excretion. However, the impact of different classes of antihypertensives on kidney stone risk is unknown. To assess this impact, we conducted a retrospective, population-based cohort study using linked health administrative databases. Individuals aged >65 years who initiated one of the four antihypertensive classes (that is, angiotensin-converting enzyme inhibitors (ACEis)/angiotensin receptor blockers (ARBs), beta-blockers, calcium channel blockers or thiazide diuretics) were included...
March 23, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28326074/diversity-and-biomineralization-potential-of-the-epilithic-bacterial-communities-inhabiting-the-oldest-public-stone-monument-of-cluj-napoca-transylvania-romania
#6
Adrian-Ştefan Andrei, Manuela R Păuşan, Tudor Tămaş, Nicolae Har, Lucian Barbu-Tudoran, Nicolae Leopold, Horia L Banciu
In this study, we investigated the biomineralization potential and diversity of the epilithic bacterial communities dwelling on the limestone statue of Saint Donatus, the oldest public monument of Cluj-Napoca city (Transylvania region, NW Romania). Their spatial distribution together with phylogenetic and metabolic diversity, as well as their capacity to precipitate calcium carbonate was evaluated by combining molecular and phenotypic fingerprinting methods with X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron-microscopy analyses...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28322899/permanent-bulbar-urethral-ligation-emerging-treatment-option-for-incontinent-men-with-end-stage-urethra
#7
Maia E VanDyke, Boyd R Viers, Travis J Pagliara, Jeremy M Scott, Nabeel Shakir, Daniel D Dugi, Billy H Cordon, Matthias D Hofer, Allen F Morey
OBJECTIVE: To report our experience with permanent urethral ligation for severe incontinence among men with end-stage urethra. METHODS: From our institutional Artificial Urethral Sphincter (AUS) database of 512 patients from 2010-2016, 10 men underwent permanent urethral ligation with concurrent suprapubic tube (SPT) diversion following recurrent AUS cuff erosion. Clinical characteristics and outcomes were evaluated. Quality of life (QOL) was assessed using the Michigan Incontinence Symptom Index (M-ISI) and the Patient Global Index of Improvement (PGI-I)...
March 16, 2017: Urology
https://www.readbyqxmd.com/read/28322898/biliary-stent-migration-a-rare-cause-of-a-bladder-stone
#8
Neha R Malhotra, Carlos Amir Esparza Monzavi, Jean-Sebastien Trepanier, Johan Nordenstam, Michael R Abern
Our patient presented with dysuria and pneumaturia without any prior urologic instrumentation. History included choledocolithiasis requiring ERCP and biliary stenting. Imaging showed a large bladder stone. She was taken to surgery and found to have diverticulitis. The sigmoid was resected and the bladder found to have a small fistula tract. The bladder was opened and a large calculus was identified and extracted. The stone was opened and found to contain a biliary stent. While biliary stenting is generally considered safe, migration can occur...
March 17, 2017: Urology
https://www.readbyqxmd.com/read/28322876/predator-prey-subsidy-population-dynamics-on-stepping-stone-domains
#9
Lulan Shen, Robert A Van Gorder
Predator-prey-subsidy dynamics on stepping-stone domains are examined using a variety of network configurations. Our problem is motivated by the interactions between arctic foxes (predator) and lemmings (prey) in the presence of seal carrion (subsidy) provided by polar bears. We use the n-Patch Model, which considers space explicitly as a "Stepping Stone" system. We consider the role that the carrying capacity, predator migration rate, input subsidy rate, predator mortality rate, and proportion of predators surviving migration play in the predator-prey-subsidy population dynamics...
March 16, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28316393/chronic-bovine-fasciolosis-associated-cholangiolithiasis-a-case-report
#10
Ananda K Javaregowda, Kavitha B Rani
Cholangiolithiasis is a rare condition in animals wherein the choleliths are formed in the biliary tracts causing chronic inflammation. In the current study, choleliths which were firm and friable concretions of approximately 3-4 cm in diameter were found in the bile ducts of the liver of an adult cattle infected with Fasciola gigantica. Two such irregularly shaped concretions were encountered in the two biliary tracts leading to common bile duct in the liver. There were localized irregular saccular dilatation and numerous liver flukes in the bile ducts...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28316328/reoperation-after-cyst-excision-with-hepaticojejunostomy-for-choledochal-cysts-our-experience-in-18-cases
#11
Qingfeng Sheng, Zhibao Lv, Weijue Xu, Xianmin Xiao, Jiangbin Liu, Yibo Wu
BACKGROUND Complete cyst excision with biliary reconstruction is the treatment of choice for choledochal cyst (CC). The aim of this article is to review our experience in patients who underwent reoperation between January 1995 and December 2014. MATERIAL AND METHODS The records of 18 patients (female/male, 15/3) were retrospectively analyzed including age, sex, cyst type, initial procedure, lab and imaging findings, indications for reoperation, intraoperative findings, and results of reoperation. The median follow-up period was 6 years...
March 20, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28315816/longest-gallbladder-a-case-report
#12
Rahul Yadav, Jeevan Kankaria
INTRODUCTION: A gallbladder mucocele is the distention of the gallbladder by an inappropriate accumulation of mucus. Decreased bile flow, decreased gallbladder motility, and altered absorption of water from the gallbladder lumen are predisposing factors to biliary sludge. However, it is more likely to be a small part of a complex disease process involving inflammation of the gallbladder wall and changes to the lining of the gallbladder changing the consistency of its secretions. We would like to present a case of mucocele gallbladder operated successfully by laparoscopic cholecystectomy...
February 28, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28314883/stone-former-urine-proteome-demonstrates-a-cationic-shift-in-protein-distribution-compared-to-normal
#13
Ann M Kolbach-Mandel, Neil S Mandel, Brian R Hoffmann, Jack G Kleinman, Jeffrey A Wesson
Many urine proteins are found in calcium oxalate stones, yet decades of research have failed to define the role of urine proteins in stone formation. This urine proteomic study compares the relative amounts of abundant urine proteins between idiopathic calcium oxalate stone forming and non-stone forming (normal) cohorts to identify differences that might correlate with disease. Random mid-morning urine samples were collected following informed consent from 25 stone formers and 14 normal individuals. Proteins were isolated from urine using ultrafiltration...
March 17, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28302252/bilateral-ureteral-duplication-of-complete-left-and-incomplete-right-side-with-lower-pole-kidney-stone
#14
Selahattin Caliskan
Bilateral ureteral duplication is a very rare anomaly, a result of two separate ureteric buds arising from a mesonephric duct. Most of the patients are asymptomatic and diagnosed incidentally. Recurrent urinary tract infections, incontinence, haematuria, stone formation and flank pain are common clinical symptoms. Intravenous urography, computed tomography urography, and magnetic resonance imaging are the diagnostic modalities. In this report, a case of bilateral ureteral duplication with stone formation in the lower pole of the right kidney is presented along with its management...
March 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28282135/silver-nanoparticles-and-metallic-silver-interfere-with-the-griess-reaction-reduction-of-azo-dye-formation-via-a-competing-sandmeyer-like-reaction
#15
Angela Kämpfer, Rita La Spina, Douglas Gilliland, Sandro Valzacchi, David Asturiol, Vicki Stone, Agnieszka Kinsner-Ovaskainen
Silver (Ag) is the most common nanomaterial (NM) in consumer products. Much research has been focused on elucidating the potential impact of Ag-containing NMs on human health, e.g., cytotoxicity, genotoxicity, or proinflammatory responses. In the case of proinflammatory responses, a frequently used end point is the induction of nitric oxide (NO), which is indirectly quantified as nitrite (NO2(-)) with the Griess reaction. After preliminary studies in a macrophage-like cell culture system showed anomalous false negative results in the presence of silver nanoparticles (Ag NPs), we studied the influence of Ag on the detection of NO2(-) in a cell-free environment...
March 24, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28277438/endoscopic-sphincterotomy-for-gallbladder-muddy-stones-or-sludge-in-patients-with-papillary-disease-a-retrospective-study
#16
Cheng Zhang, Yu-Long Yang, Yue-Feng Ma, Hong-Wei Zhang, Li-Jun Shi, Jing-Yi Li, Mei-Ju Lin, Chun-Chun Qi
BACKGROUND: The formation of gallbladder stones is associated with dysfunctional contraction and duodenal papilla diseases. However, endoscopic sphincterotomy can improve the contraction of the gallbladder and resolve duodenal papilla disease. AIM: The aim of the study was to assess the feasibility and effectiveness of endoscopic sphincterotomy in the treatment of muddy stones or sludge in the gallbladder during papillary disease. METHODS: The clinical data of 53 patients with gallbladder muddy stones or sludge undergoing endoscopic sphincterotomy were retrospectively analyzed...
March 8, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28270646/a-novel-mutation-in-slc7a9-gene-in-cystinuria
#17
Saeedeh Fazaeli, Saeideh Ashouri, Majid Kheirollahi, Mehrdad Mohammadi, Mohammad Fazilati
INTRODUCTION: Cystinuria is an inherited disorder affecting luminal transport of cystine and dibasic amino acids. Because of the poor solubility of cystine in urine, stone formation in the kidney occurs frequently. Cystinuria is associated with mutations in the SLC3A1 and SLC7A9 genes. Despite the population-specific distribution of mutations in the SLC7A9 genes, there are few genetic data reported for cystinuric patients from the Middle East. MATERIALS AND METHODS: Exon 4 of the SLC7A9 gene was sequenced in 21 patients with cystinuria, using the polymerase chain reaction and sequencing methods...
March 2017: Iranian Journal of Kidney Diseases
https://www.readbyqxmd.com/read/28258472/prevalence-of-renal-uric-acid-stones-in-the-adult
#18
Alberto Trinchieri, Emanuele Montanari
The aim of this study was to estimate uric acid renal stone prevalence rates of adults in different countries of the world. PubMed was searched for papers dealing with "urinary calculi and prevalence or composition" for the period from January 1996 to June 2016. Alternative searches were made to collect further information on specific topics. The prevalence rate of uric acid stones was computed by the general renal stone prevalence rate and the frequency of uric acid stones in each country. After the initial search, 2180 papers were extracted...
March 3, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28257913/gallstone-related-abdominal-cystic-mass-presenting-6-years-after-laparoscopic-cholecystectomy-a-case-report
#19
Rama Faour, Dana Sultan, Rand Houry, Mhamad Faour, Ahmad Ghazal
INTRODUCTION: Although gallbladder perforation and gallstones spillage are common complications during laparoscopic cholecystectomy (LC), clinically significant complications resulting from stones left in the peritoneum are extremely uncommon. We report a rare case of spilled gallstones complication with a late and uncharacteristic presentation. PRESENTATION OF THE CASE: A 44-year-old Caucasian female presented with a complaint of a mass in the right upper quadrant associated with a cramping pain for the last 6 months...
February 11, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28254292/rapid-sensing-of-melamine-in-milk-by-interference-green-synthesis-of-silver-nanoparticles
#20
S Varun, S C G Kiruba Daniel, Sai Siva Gorthi
A highly sensitive, selective, and rapid interference green synthesis based determination of potential milk adulterant melamine has been reported here. Melamine is a nitrogenous compound added to milk for mimicking proteins, consumption of which leads to kidney stones and renal failures. Melamine interacts with ascorbic acid (AA) through strong hydrogen-bonding interactions, thus resulting in an interference/interruption in the formation of silver (Ag) nanoparticles which was confirmed by UV-Vis spectroscopy and Transmission Electron Microscopy (TEM)...
May 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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