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https://www.readbyqxmd.com/read/28647576/robotic-assisted-excision-of-a-urachal-diverticulum
#1
Pamela Frazzini Padilla, Soo Kwon
OBJECTIVE: To demonstrate a combined robotic assisted laparoscopic technique with concomitant cystoscopy use for excision of a urachal diverticulum, to ensure complete resection of diverticulum and bladder cuff. DESIGN: Step-by-step demonstration and explanation of the procedure using video illustration. IRB/Ethics Committee ruled that approval was not required for this case report, however patient consent was obtained. SETTING: Vesicourachal diverticula account for approximately 3-5% of congenital urachal anomalies...
June 21, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28640607/primary-and-photochemically-aged-aerosol-emissions-from-biomass-cookstoves-chemical-and-physical-characterization
#2
Stephen M Reece, Aditya Sinha, Andrew P Grieshop
Secondary organic aerosol (SOA) formation during photo-oxidation of primary emissions from cookstoves used in developing countries may make important contributions to their climate and air quality impacts. We present results from laboratory experiments with a field portable oxidation flow reactor (F-OFR) to study the evolution of emissions over hours to weeks of equivalent atmospheric aging. Lab tests, using dry red oak, measured fresh and aged emissions from a 3 stone fire (TSF), a "rocket" natural draft stove (NDS) and a forced draft gasifier stove (FDGS), in order of increasing modified combustion efficiency (MCE) and decreasing particulate matter emission factors (EF)...
June 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28636615/family-living-sets-the-stage-for-cooperative-breeding-and-ecological-resilience-in-birds
#3
Michael Griesser, Szymon M Drobniak, Shinichi Nakagawa, Carlos A Botero
Cooperative breeding is an extreme form of cooperation that evolved in a range of lineages, including arthropods, fish, birds, and mammals. Although cooperative breeding in birds is widespread and well-studied, the conditions that favored its evolution are still unclear. Based on phylogenetic comparative analyses on 3,005 bird species, we demonstrate here that family living acted as an essential stepping stone in the evolution of cooperative breeding in the vast majority of species. First, families formed by prolonging parent-offspring associations beyond nutritional independency, and second, retained offspring began helping at the nest...
June 2017: PLoS Biology
https://www.readbyqxmd.com/read/28633199/diffuse-type-caroli-disease-with-characteristic-central-dot-sign-complicated-by-multiple-intrahepatic-and-common-bile-duct-stones
#4
Moon Joo Hwang, Tae Nyeun Kim
Caroli disease (CD) is a rare congenital malformation of the liver characterized by non-obstructive, segmental, cystic dilatation of the intrahepatic bile ducts (IHDs). The clinical course is usually asymptomatic for the first 5-20 years, and symptoms may seldom occur throughout the patient's life. Bile stagnation leads to recurrent episodes of cholangitis, stone formation, or liver abscesses, and biliary cirrhosis usually occurs years later. Here we report on a 42-year-old man diagnosed with diffuse-type CD with a characteristic central dot sign, who had multiple intrahepatic and common bile duct (CBD) stones...
June 20, 2017: Clinical Endoscopy
https://www.readbyqxmd.com/read/28631911/-the-study-of-mineral-composition-and-structure-of-uroliths-in-the-residents-of-tomsk-district-tomsk
#5
O A Sevostyanova, V S Boshchenko, V K Osadchii, V P Parnachev, A K Polienko
AIM: To successfully treat and prevent urolithiasis, the composition and structure of uroliths should be examined using modern analytical techniques. For a long time, studies of the biomineral formation in the human body have been conducted exclusively in the field of medicine. The main attention has been paid to the diagnosis and treatment of diseases leading to the occurrence of pathogenic formations. At the same time, it is quite obvious that it is important to have a clear idea about the causes of pathogenic formations, the mechanisms for their further formation, composition and structure...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28629039/time-dependent-subcellular-structure-injuries-induced-by-nano-micron-sized-calcium-oxalate-monohydrate-and-dihydrate-crystals
#6
Xin-Yuan Sun, Kai Yu, Jian-Ming Ouyang
Comparative studies were conducted to investigate the time effect of cell injury induced by nano-sized (50nm) and micron-sized (10μm) calcium oxalate monohydrate (COM) and dihydrate (COD) crystals in African green monkey renal epithelial (Vero) cells. The effects of nano-/micron-sized COM and COD exposure on Vero cells were investigated by detecting the cell viability, cell morphology, LDH release, reactive oxygen species, mitochondrial membrane potential, cell cycle, and cell apoptosis, as well as the intracellular and extracellular crystal distribution...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28627398/stones-first-a-gas-pyelo-nephroscopy-strategy-for-laparoscopic-pyeloplasty-and-renal-stone-extraction
#7
C Kouriefs, F Georgiades, P Grange
OBJECTIVE: To report our experience on gas endoscopy as the first step of pelvi-ureteric junction (PUJ) obstruction repair when complicated by nephrolithiasis. MATERIALS AND METHODS: Stone formation due to urine stasis is a known complication PUJ obstruction and an indication for its surgical repair. The undisputed results of the Anderson-Hynes dismembered pyeloplasty make it a quasi-gold standard; however, the identification and extraction of calyceal stones through the laparoscopic route can be challenging...
June 13, 2017: Urology
https://www.readbyqxmd.com/read/28625681/variation-of-calcium-copper-and-iron-levels-in-serum-bile-and-stone-samples-of-patients-having-different-types-of-gallstone-a-comparative-study
#8
Mustafa Khan, Tasneem Gul Kazi, Hassan Imran Afridi, Sirajuddin, Muhammad Bilal, Asma Akhtar, Sabir Khan, Salma Kadar
BACKGROUND: Epidemiological data among the human population has shown a significantly increased incidence of gallstone (GS) disease worldwide. It was studied that some essential (calcium) and transition elements (iron and copper) in bile play an important role in the development of GS. METHOD: The estimation of calcium, copper and iron were carried out in the serum, gall bladder bile and different types of GS (cholesterol, mixed and pigmented) of 172 patients, age ranged 20-55years...
June 15, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28625406/ductal-stones-recurrence-after-extracorporeal-shock-wave-lithotripsy-for-difficult-common-bile-duct-stones-predictive-factors
#9
Rosangela Muratori, Daniele Mandolesi, Chiara Pierantoni, Davide Festi, Antonio Colecchia, Giuseppe Mazzella, Franco Bazzoli, Francesco Azzaroli
BACKGROUND & PURPOSE: Extra-corporeal shock wave lithotripsy (ESWL) can be considered in difficult common bile duct stones (DCBDS), with a success rate greater than 90% but data on stone recurrence after ESWL are limited. We performed a retrospective analysis to evaluate long-term outcomes in patients who underwent ESWL for DCBDS. METHODS: From May 1992 to October 2012, patients who underwent ESWL treatment for DCBDS, not amenable to endoscopic extraction, were included...
May 23, 2017: Digestive and Liver Disease
https://www.readbyqxmd.com/read/28624518/role-of-gut-microbiota-against-calcium-oxalate
#10
REVIEW
Humaira Sadaf, Syed Irfan Raza, Syed Waqas Hassan
Nephrolithiasis is a condition marked by the presence or formation of stones in kidneys. Several factors contribute to kidney stones development such as environmental conditions, type of dietary intake, gender and gastrointestinal flora. Most of the kidney stones are composed of calcium phosphate and calcium oxalate, which enter in to the body through diet. Both sources of oxalates become dangerous when normal flora of gastrointestinal tract is disturbed. Oxalobacter and Lactobacillus species exist symbiotically in the human gut and prevent stone formation by altering some biochemical pathways through production of specific enzymes which help in the degradation of oxalate salts...
June 15, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28623397/different-effects-of-%C3%AE-linolenic-acid-gla-supplementation-on-plasma-and-red-blood-cell-phospholipid-fatty-acid-composition-and-calcium-oxalate-kidney-stone-risk-factors-in-healthy-subjects-from-two-race-groups-with-different-risk-profiles-pose-questions-about
#11
Allen L Rodgers, Dalielah Jappie-Mahomed, Paul J van Jaarsveld
Fatty acid (FA) composition of phospholipids in plasma and red blood cells (RBC) can influence calciuria, oxaluria and renal stone formation. In this regard, the ratio of arachidonic acid (AA) and its precursor linoleic acid (LA) appears to be important. Administration of γ-linolenic acid (GLA) has been shown to increase the concentration of dihomo-gamma linoleic acid (DGLA) relative to AA indicating that it may attenuate biosynthesis of the latter. Such effects have not been investigated in race groups having difference stone occurrence rates...
June 16, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28621639/outcome-of-the-double-j-stent-placement-in-pediatric-kidney-transplant-a-single-center-experience
#12
Hakan Sözen, Onur Özen, Kibriya Fidan, Oğuz Söylemezoğlu, Aydın Dalgıç
OBJECTIVES: Double J stent placement at kidney transplant may reduce stenosis or leakage complication rates. However, placement may also increase risk for early urinary tract infection (ie, < 3 mo after transplant). In children, the usefulness of double J stent placement is not well defined. MATERIALS AND METHODS: We analyzed retrospective data from children who received transplants at the Gazi University Transplantation Center and Pediatric Nephrology (Ankara, Turkey) for outcomes related to double J stents...
June 16, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28616648/protective-effect-of-dietary-polyphenol-caffeic-acid-on-ethylene-glycol-induced-kidney-stones-in-rats
#13
Fauzia Yasir, Atia-Tul- Wahab, M Iqbal Choudhary
Dietary polyphenol caffeic acid (1) has been reported for various pharmacological activities. The aim of the current study was to investigate the effect of caffeic acid (1) on ethylene glycol-induced renal stones in rats. For the study, male Wistar rats were divided into seven groups; normal, pathological, and standard drug controls, and preventive and curative groups. Normal control group received drinking water for 8 weeks. Pathological, standard drug, preventive, and curative groups received 0.75% ethylene glycol in drinking water for the induction of calcium oxalate stone formation, along with the regular diet...
June 14, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28611560/gallstone-ileus-caused-by-cholecystocolonic-fistula-and-gallstone-impaction-in-the-sigmoid-colon-review-of-the-literature-and-novel-surgical-treatment-with-trephine-loop-colostomy
#14
James W O'Brien, Lucy-Anne Webb, Luke Evans, Chris Speakman, Irshad Shaikh
Gallstone ileus is an uncommon cause of intestinal obstruction and occurs following the formation of a cholecystoenteric fistula, permitting passage of gallstones into the gastrointestinal tract. Impaction of a gallstone in the sigmoid colon is rare and is usually at sites of previous colonic disease. Definitive management can be challenging due to the advanced age and co-morbidity usually seen in this group of patients. We describe a patient successfully managed with on-table endoscopy and, under local anaesthetic, the formation of a left iliac fossa trephine loop colostomy, permitting an enterolithotomy to deliver the stone whilst accommodating for severe pre-existing distal sigmoid diverticular disease...
January 2017: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/28605936/vascular-disease-and-kidney-stones-abdominal-aortic-calcifications-are-associated-with-low-urine-ph-and-hypocitraturia
#15
Nishant D Patel, Ryan D Ward, Juan Camilo Calle, Eric Remer, Manoj Monga
OBJECTIVE: Vascular calcifications are associated with nephrolithiasis. While studies have demonstrated correlations with vascular disease and calcium stones in kidney stone formers (KSF), an etiologic link has remained elusive. As a non-contrast CT scan (NCCT) is typically part of a stone evaluation, our objective was to evaluate the association of NCCT-based assessment of abdominal aortic calcifications (AAC) with 24-hour urine parameters and stone composition. MATERIALS AND METHODS: 97 KSF were included with CT imaging and 24-hour urine studies...
June 12, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28597677/endoscopic-management-of-afferent-loop-syndrome-caused-by-enteroliths-and-anastomotic-stricture-a-case-report
#16
Ana Rita Alves, Nuno Almeida, Margarida Ferreira, Luís Tomé
Afferent loop syndrome (ALS) is a rare complication of Billroth-II gastrojejunostomy. Causes of afferent loop obstruction include adhesions, internal hernias, intestinal strictures or malignancy. Obstruction caused by enteroliths is rare and usually requires surgery. We present the case of a 90-year-old man with a Billroth-II performed 50 years earlier and three acute pancreatitis. He presented with acute abdominal pain, without signs of pancreatitis. Upper digestive endoscopy revealed a punctiform anastomotic stricture of the afferent loop...
June 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28592876/elongation-factor-tu-on-escherichia-coli-isolated-from-urine-of-kidney-stone-patients-promotes-calcium-oxalate-crystal-growth-and-aggregation
#17
Piyawan Amimanan, Ratree Tavichakorntrakool, Kedsarin Fong-Ngern, Pipat Sribenjalux, Aroonlug Lulitanond, Vitoon Prasongwatana, Chaisiri Wongkham, Patcharee Boonsiri, Jariya Umka Welbat, Visith Thongboonkerd
Escherichia coli is the most common bacterium isolated from urine and stone matrix of calcium oxalate (CaOx) stone formers. Whether it has pathogenic role(s) in kidney stone formation or is only entrapped inside the stone remains unclear. We thus evaluated differences between E. coli isolated from urine of patients with kidney stone (EUK) and that from patients with urinary tract infection (UTI) without stone (EUU). From 100 stone formers and 200 UTI patients, only four pairs of EUK/EUU isolates had identical antimicrobial susceptibility patterns...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28587918/ct-based-diagnosis-of-visceral-obesity-and-hepatic-steatosis-is-associated-with-low-urine-ph
#18
Nishant D Patel, Ryan D Ward, Juan Calle, Erick M Remer, Manoj Monga
PURPOSE: Uric acid nephrolithiasis is associated with elevated visceral fat area (VFA) in kidney stone formers (KSF). Hepatic steatosis has also been linked to visceral obesity and nephrolithiasis. We evaluated the association of NCCT-based diagnosis of visceral obesity and hepatic steatosis with 24-hour urine parameters and stone composition in KSF. MATERIAL AND METHODS: 98 KSF were included who had CT imaging and 24-hour urine studies. For each patient, a single CT axial area measurement was obtained for visceral fat area (VFA)...
June 3, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28587067/diet-induced-low-grade-metabolic-acidosis-and-clinical-outcomes-a-review
#19
Renata Alves Carnauba, Ana Beatriz Baptistella, Valéria Paschoal, Gilberti Helena Hübscher
Low-grade metabolic acidosis is a condition characterized by a slight decrease in blood pH, within the range considered normal, and feeding is one of the main factors that may influence the occurrence of such a condition. The excessive consumption of acid precursor foods (sources of phosphorus and proteins), to the detriment of those precursors of bases (sources of potassium, calcium, and magnesium), leads to acid-base balance volubility. If this condition occurs in a prolonged, chronic way, low-grade metabolic acidosis can become significant and predispose to metabolic imbalances such as kidney stone formation, increased bone resorption, reduced bone mineral density, and the loss of muscle mass, as well as the increased risk of chronic diseases such as type 2 diabetes mellitus, hypertension, and non-alcoholic hepatic steatosis...
May 25, 2017: Nutrients
https://www.readbyqxmd.com/read/28585833/energetic-basis-for-inhibition-of-calcium-phosphate-biomineralization-by-osteopontin
#20
Meng Li, Lijun Wang, Christine V Putnis
Calcium oxalate kidney stones form attached to Randall's plaques (RP), calcium phosphate (Ca-P) deposits on the renal papillary surface. Osteopontin (OPN) suppresses crystal growth in the complex process of urinary stone formation, but the inhibitory role of active domains of OPN involved in the initial formation of the RPs attached to epithelial cells has yet to be clarified. Here we demonstrate the thermodynamic basis for how OPN sequences regulate the onset of Ca-P mineral formation on lipid rafts as a model membrane...
June 12, 2017: Journal of Physical Chemistry. B
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