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https://www.readbyqxmd.com/read/29028588/formation-of-struvite-urinary-stones-and-approaches-towards-the-inhibition-a-review
#1
REVIEW
Poppy Das, Gaurav Gupta, Vinodhini Velu, Rajendra Awasthi, Kamal Dua, Himaja Malipeddi
BACKGROUND: Struvite is one of the most common urinary/kidney stones, composed of magnesium ammonium phosphate (MgNHPO4·H2O). They are also termed as infection stones as these are associated with urinary tract infections. Numerous studies have been carried out to examine the growth and inhibition of struvite stones. OBJECTIVE: This review summarizes various reports on the factors responsible for inducing struvite stones in the kidney and gives a detailed account of studies on inhibition of growth of struvite crystals...
October 10, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29027695/shear-wave-elastographic-alterations-in-the-kidney-after-extracorporeal-shock-wave-lithotripsy
#2
Rustu Turkay, Ercan Inci, Derya Bas, Arda Atar
OBJECTIVES: Extracorporeal shock wave lithotripsy (ESWL) is a method used frequently for the treatment of renal stone disease. Although its safety is proven, there are still concerns about its unwanted effects on kidneys. In this prospective study, we aimed to evaluate renal tissue alterations with shear wave elastography (SWE) after ESWL. We also studied the correlation between SWE and resistive index (RI) changes. METHODS: The study included 59 patients who underwent ESWL treatment for renal stone disease...
October 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29019063/statin-prescribing-in-the-elderly-special-considerations
#3
REVIEW
M Leya, N J Stone
PURPOSE OF REVIEW: Our aim was to examine the current evidence behind prescribing statins to individuals over 65 years of age with emphasis on those older than 75. Individuals over 75 years of age may often have multiple comorbidities and take many medications. Additionally, they are often underrepresented in randomized controlled trials (RCTs) of statins in older populations. While results of RCTs demonstrate the benefit of statin therapy in both primary and secondary prevention patients, clinicians must more carefully consider adverse effects and drug-drug interactions before prescribing statin therapy as well as determining the intensity in older individuals...
October 11, 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28992566/quantification-of-xanthine-and-uric-acid-related-compounds-in-urine-using-a-dilute-and-shoot-technique-coupling-ultra-high-performance-liquid-chromatography-and-high-resolution-orbitrap-mass-spectrometry
#4
Adrian Rodriguez, Rosa Maria Gomila, Gabriel Martorell, Antonia Costa-Bauza, Felix Grases
Quantitative analysis of relevant metabolites in biofluids such as urine is often a tedious procedure, since it usually requires extraction, purification or preconcentration. For instance, in the analysis of methylxanthines in urine, a solid-phase extraction is often required. In the current work, a rapid and highly sensitive "dilute-and-shoot" method combining ultra-high-performance liquid chromatography and high-resolution mass spectrometry (UHPLC/HRMS) was validated for urinary determination of twelve analytes: uric acid, hypoxanthine, xanthine, 1-methyluric acid, 1,3-dimethyluric acid, 1-methylxanthine, 3-methylxanthine, 7-methylxanthine, theophylline, theobromine, paraxanthine and caffeine...
October 2, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28980082/accuracy-of-daily-fluid-intake-measurements-using-a-smart-water-bottle
#5
Michael S Borofsky, Casey A Dauw, Nadya York, Colin Terry, James E Lingeman
High fluid intake is an effective preventative strategy against recurrent kidney stones but is known to be challenging to achieve. Recently, a smart water bottle (Hidrate Spark™, Minneapolis, MN) was developed as a non-invasive fluid intake monitoring system. This device could help patients who form stones from low urine volume achieve sustainable improvements in hydration, but has yet to be validated in a clinical setting. Hidrate Spark™ uses capacitive touch sensing via an internal sensor. It calculates volume measurements by detecting changes in water level and sends data wirelessly to users' smartphones through an application...
October 4, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28975110/nephrolithiasis-as-a-common-urinary-system-manifestation-of-inflammatory-bowel-diseases-a-clinical-review-and-meta-analysis
#6
REVIEW
Mahboube Ganji-Arjenaki, Hamid Nasri, Mahmoud Rafieian-Kopaei
CONTEXT: The extra-intestinal manifestations of inflammatory bowel disease (IBD) are common and involve other organs or systems for example; urinary system. EVIDENCE ACQUISITIONS: For this review, we used a variety of sources by searching through Web of Science, PubMed, EMBASE, Scopus and directory of open access journals (DOAJ). RESULTS: Urinary complications may occur in up to 22% of patients and nephrolithiasis or renal/kidney stones have been suggested to be a common manifestation of disease in forms of uric acid, calcium phosphate or calcium oxalate...
July 2017: Journal of Nephropathology
https://www.readbyqxmd.com/read/28974672/a-non-classical-view-on-calcium-oxalate-precipitation-and-the-role-of-citrate
#7
Encarnación Ruiz-Agudo, Alejandro Burgos-Cara, Cristina Ruiz-Agudo, Aurelia Ibañez-Velasco, Helmut Cölfen, Carlos Rodriguez-Navarro
Although calcium oxalates are relevant biominerals, their formation mechanisms remain largely unresolved. Here, we investigate the early stages of calcium oxalate formation in pure and citrate-bearing solutions. Citrate is used as a well-known oxalate precipitation inhibitor; moreover, it resembles the functional domains of the biomolecules that modulate biomineralization. Our data suggest that calcium oxalate forms after Ca(2+) and C2O4(2-) association into polynuclear stable complexes that aggregate into larger assemblies, from which amorphous calcium oxalate nucleates...
October 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28970593/occupations-and-the-risk-of-bladder-cancer-in-yazd-province-a-case-control-study
#8
Fatemeh Farzaneh, Amir Houshang Mehrparvar, Mohammad Hassan Lotfi
BACKGROUND: Bladder cancer is the most common cancer of the urinary tract, with known occupational causes. The most effective way to prevent occupational cancers of the urinary tract is to prevent exposure to known carcinogens. OBJECTIVE: To examine the relationship between occupation and the risk of bladder cancer. METHODS: This case-control study was performed on 200 patients with bladder cancer and 200 healthy individuals in Yazd. Data were collected using a researcher-made questionnaire and based on interviews with patients and controls...
October 2017: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28954637/-dual-energy-ct-new-diagnostic-possibilities
#9
S M Bollen, M J C M Rutten
Dual-energy CT (DECT) provides more information than a conventional CT scan. This new technique does not only provide morphological information, but also provides information about the chemical composition of tissues and substances, e.g. uric acid or calcium, based on material-specific differences in X-ray attenuation, leading to diagnostic improvement. Other benefits include reduced radiation dose, reduced use of contrast fluids due to better iodine detection and improved image quality. DECT fulfils a need in patients with a hypersensitivity to contrast agents, leads to less kidney damage, and avoids the necessity of more invasive diagnostic methods such as lumbar punctures...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28952688/-antimicrobial-resistance-of-uropathogens-in-patients-with-acute-obstructive-pyelonephritis
#10
Yu L Naboka, I A Gudima, E V Mitusova, S K Bedzhanyan, P P Morgun, M I Kogan, K T Dzhalagoniya, M A Akimenko
RELEVANCE: Acute pyelonephritis is known to be the most complicated and severe urinary tract infection occurring in all age groups and accounting for 14% of all kidney diseases. The generally recognized standard antibiotic therapy cannot completely prevent the progression of the disease to its chronic form after relief of its acute manifestations thus leading to a high incidence of relapses. The aim of our study was to investigate the spectrum of uropathogens and their antibiotic sensitivity in acute obstructive pyelonephritis...
September 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28951890/the-induction-of-oxalate-metabolism-in-vivo-is-more-effective-with-functional-microbial-communities-than-with-functional-microbial-species
#11
Aaron W Miller, Colin Dale, M Denise Dearing
For mammals, oxalate enters the body through the diet or is endogenously produced by the liver; it is removed by microbial oxalate metabolism in the gut and/or excretion in feces or urine. Deficiencies in any one of the these pathways can lead to complications, such as calcium oxalate urinary stones. While considerable research has been conducted on individual oxalate-degrading bacterial isolates, interactions between oxalate and the gut microbiota as a whole are unknown. We examined the reduction in oxalate excretion in a rat model following oral administration of fecal microbes from a mammalian herbivore adapted to a high oxalate diet or to fecal transplants consisting of two different formulations of mixed oxalate-degrading isolates...
September 2017: MSystems
https://www.readbyqxmd.com/read/28943803/primary-hyperoxaluria-detected-by-bone-marrow-biopsy-case-report
#12
F Nachite, M Dref, A Fakhri, H Rais
BACKGROUND: Primary hyperoxaluria is a rare disease with an estimated prevalence of 1 to 3 cases per million. It is due to a hepatic enzyme deficiency responsible for an endogenous overproduction of oxalate. Oxalate crystals commonly deposit in the kidney and more rarely in bone marrow. The literature has reported, to the best of our knowledge, only two cases of hyperoxaluria diagnosed by bone marrow biopsy and our case is the only one that does not show radiological bone lesions. CASE PRESENTATION: A young 22 year old chronic hemodialysis patient with nephrocalcinosis...
2017: BMC Clinical Pathology
https://www.readbyqxmd.com/read/28937059/the-effect-of-an-educational-program-for-vascular-access-care-on-nurses-knowledge-at-dialysis-centers-in-khartoum-state-sudan
#13
Kalthoum Ibrahim Yousif, Hasan Abu-Aisha, Omar Ibrahim Abboud
End-stage renal disease is a worldwide problem that requires highly skilled nursing care. Hemodialysis (HD) is a corner-stone procedure in the management of most patients who require renal replacement therapy. Adequate vascular access is essential for the successful use of HD. Appropriate knowledge in taking care of vascular access is essential for minimizing complications and accurately recognizing vascular access-related problems. This study was to evaluate the effect of an educational program for vascular access care on nurses' knowledge at nine dialysis centers in Khartoum State...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28900827/lifetime-radiation-exposure-in-patients-with-recurrent-nephrolithiasis
#14
REVIEW
Mohamed A Elkoushy, Sero Andonian
Patients presenting with nephrolithiasis often undergo repeated imaging studies before, during, and after management. Considering the significant risk of stone recurrence in primary stone-formers, repeated imaging studies are not uncommon. Cumulative effects of ionizing radiation exposure from various imaging studies could potentially increase the risk for developing cataracts and solid malignancies in urolithiasis patients. Therefore, practitioners planning or performing imaging studies with ionizing radiation are compelled to keep radiation exposure to humans and the environment as low as possible, thus strictly adhering to the ALARA (As Low as Reasonably Achievable) principles...
September 12, 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28900379/postmenopausal-hormone-and-the-risk-of-nephrolithiasis-a-meta-analysis
#15
Juan Yu, Binyan Yin
Menopause is reported to be associated with increased urinary calcium excretion, which may enhance the risk for the development of calcium kidney stones. However, it remains controversial about whether high level of postmenopausal hormone (PMH) is a risk factor for formation of nephrolithiasis. Several observational studies have shown that PMH is protective based on 24-hour urinary parameters. Recent clinical trials provided evidence to conclude that estrogen therapy increases the risk of nephrolithiasis in healthy postmenopausal women...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28882781/ureteroscopic-urinary-stone-treatment-among-patients-with-renal-anomalies-patient-characteristics-and-treatment-outcomes
#16
Jaap D Legemate, Barbaros Baseskioglu, Jakub Dobruch, Jorge Gutierrez-Aceves, Oscar Negrete, Carlos Rioja Sanz, Muharrem Murat Yildiz, Jean Jmch de la Rosette
OBJECTIVES: To evaluate patients' characteristics, surgical procedure data, and outcomes of URS stone treatment in patients with a horseshoe kidney (HSK), ectopic kidney (EK), and malrotated kidney (MK). METHODS: This study is a sub-analysis of the CROES URS Global Study, which was a prospective multicenter observational study, collecting data on URS stone treatment from consecutive patients over a 1-year period. 114 Centers participated in 32 countries. This analysis acuminated on URS stone treatment in the specified renal anomalies: HSK, EK and MK...
September 4, 2017: Urology
https://www.readbyqxmd.com/read/28858562/evaluation-of-kidney-stones-with-reduced-radiation-dose-ct-progress-from-2011-2012-to-2015-2016-not-there-yet
#17
Karrin Weisenthal, Priyadarshini Karthik, Melissa Shaw, Debapriya Sengupta, Mythreyi Bhargavan-Chatfield, Judy Burleson, Adel Mustafa, Mannudeep Kalra, Christopher Moore
Purpose To determine if the use of reduced-dose computed tomography (CT) for evaluation of kidney stones increased in 2015-2016 compared with that in 2011-2012, to determine variability in radiation exposure according to facility for this indication, and to establish a current average radiation dose for CT evaluation for kidney stones by querying a national dose registry. Materials and Methods This cross-sectional study was exempt from institutional review board approval. Data were obtained from the American College of Radiology dose registry for CT examinations submitted from July 2015 to June 2016...
August 31, 2017: Radiology
https://www.readbyqxmd.com/read/28857066/hypoparathyroidism
#18
REVIEW
Michael Mannstadt, John P Bilezikian, Rajesh V Thakker, Fadil M Hannan, Bart L Clarke, Lars Rejnmark, Deborah M Mitchell, Tamara J Vokes, Karen K Winer, Dolores M Shoback
Hypoparathyroidism is a disease characterized by inadequately low circulating concentrations of parathyroid hormone (PTH) resulting in low calcium levels and increased phosphate levels in the blood. Symptoms of the disease result from increased neuromuscular irritability caused by hypocalcaemia and include tingling, muscle cramps and seizures. The most common cause of the disease is inadvertent removal of, or injury to, the parathyroid glands during neck surgery, followed by genetic, idiopathic and autoimmune aetiologies...
August 31, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28845937/-laparoscopic-pyelolithotomy-for-staghorn-kidney-stones-multi-center-study
#19
A D Kochkin, E A Gallyamov, V L Medvedev, R G Biktimirov, A G Martov, F A Sevryukov, A B Novikov, A E Sanzharov, V P Sergeev
AIM: To analyze the effectiveness and safety of laparoscopic pyelolithotomy (LP) in treating staghorn stones. MATERIALS AND METHODS: A multicentre retrospective analysis of the results of LP performed from January 2004 to December 2016 was conducted. INCLUSION CRITERIA: patients with staghorn calculi K3-K4, who underwent LP as an alternative to percutaneous nephrolithotripsy. The analysis included the incidence and structure of intra- and postoperative complications, the causes of access conversion, operating time, duration of postoperative hospital stay and stone clearance...
July 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28845934/-troyakov-experience-in-using-hytolysin-in-the-integrated-management-of-urinary-tract-infections-and-methapylactics-of-nephrolithiasis
#20
V S Saenko, F P Kapsargin, S V Pesegov, V M
RELEVANCE: Urinary tract infection (UTI) are a risk factor for diseases leading to impairment of renal function and kidney stone disease (KSD). Growing resistance of uropathogens to antibacterial agents is a challenging issue in most countries of the world. Urolithiasis is the second most prevalent urologic condition following urinary tract infections and has a pronounced tendency to recur. Rational stone metaphylaxis leads to a significant reduction in the incidence of recurrent stones...
July 2017: Urologii︠a︡
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