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https://www.readbyqxmd.com/read/28633903/internal-validation-of-a-scoring-system-to-evaluate-the-probability-of-ureteral-stones-the-chokai-score
#1
Hiroki Fukuhara, Osamu Ichiyanagi, Shinichi Midorikawa, Hiroshi Kakizaki, Hisashi Kaneko, Norihiko Tsuchiya
OBJECTIVE: The CHOKAI and STONE scores are prediction models for ureteral stones. The aims of the present study were to evaluate the diagnostic performance, to examine the optimal cut-off value, and to compare the diagnostic performance of each model. METHODS: Patients who presented to our emergency department with renal colic were considered for this prospective study. We analyzed the predictive performance of both STONE and CHOKAI scores at their optimal cut-off values, using receiver operating characteristic (ROC) curve and area under the curve (AUC), as well as sensitivity, specificity, positive likelihood ratio (LR+), and negative likelihood ratio (LR-) at the optimal cut-off value...
June 13, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28631906/-technical-features-of-intestinal-ureteroplasty-part-7-forming-ureterointestinal-anastomoses
#2
B K Komyakov, V A Ochelenko, M V Onoshko, T Kh Al-Attar, A Kh Gaziev
AIM: To present the results and technical features of forming the ureterointestinal anastomoses in intestinal ureteral substitution. MATERIAL AND METHODS: From 1998 to December 2016, 168 patients (mean age 51 +/- 8.7 years) underwent ureteral substitution using intestinal segments at the Urology Clinic of the I.I. Mechnikov NWSMU. Of them, 76 (45.2%) were males. In 119 (70.8%) patients, intestinal segments were used to replace various parts of the ureters (iliac in 92, colonic in 4, appendix in 23), and in 49 (29...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28627412/macrophages-regulate-unilateral-ureteral-obstruction-induced-renal-lymphangiogenesis-through-c-c-motif-chemokine-receptor-2-dependent-phosphatidylinositol-3-kinase-akt-mechanistic-target-of%C3%A2-rapamycin-signaling-and-hypoxia-inducible-factor-1%C3%AE-vascular-endothelial
#3
Yan-Chao Guo, Meng Zhang, Fa-Xi Wang, Guang-Chang Pei, Fei Sun, Ying Zhang, Xiaoyu He, Yi Wang, Jia Song, Feng-Ming Zhu, Nuruliarizki S Pandupuspitasari, Jing Liu, Kun Huang, Ping Yang, Fei Xiong, Shu Zhang, Qilin Yu, Ying Yao, Cong-Yi Wang
Lymphangiogenesis occurs during renal fibrosis in patients with chronic kidney diseases and vascular endothelial growth factor (VEGF)-C is required for the formation of lymphatic vessels; however, the underlying mechanisms remain unclear. We demonstrate that macrophages can regulate unilateral ureteral obstruction (UUO)-induced renal lymphangiogenesis by expressing high levels of VEGF-C by C-C motif chemokine receptor 2 (CCR2)-mediated signaling. Mice deficient in Ccr2 manifested repressed lymphangiogenesis along with attenuated renal injury and fibrosis after UUO induction...
June 13, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28627398/stones-first-a-gas-pyelo-nephroscopy-strategy-for-laparoscopic-pyeloplasty-and-renal-stone-extraction
#4
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/28626377/kidney-injury-due-to-ureteral-obstruction-caused-by-compression-from-infected-simple-hepatic-cyst
#5
Naoya Sawada, Tetsu Endo, Kenichiro Mikami, Go Igarashi, Juichi Sakamoto, Hiroshi Tono, Shinsaku Fukuda
Simple hepatic cysts are common and most often asymptomatic. In symptomatic cases, hemorrhage, rupture, and infection are major complications. However, urinary tract obstruction caused by a simple hepatic cyst is rare. We treated an 82-year-old Japanese man with an infected giant hepatic cyst causing right hydronephrosis who had a past history of left nephrectomy for renal cell carcinoma. The patient underwent ultrasound-guided percutaneous drainage and sclerotherapy with minocycline hydrochloride for the infected hepatic cyst...
May 2017: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/28624664/surgical-outcomes-of-urinary-tract-deep-infiltrating-endometriosis
#6
Basma Darwish, Emanuela Stochino-Loi, Geoffroy Pasquier, Fabrice Dugardin, Guillaume Defortescu, Carole Abo, Horace Roman
OBJECTIVE: To report the outcomes of surgical management of urinary tract endometriosis. DESIGN: Retrospective study based on prospectively recorded data (NCT02294825). DESIGN: Classification: II-3 SETTING: University Tertiary referral center. PATIENTS: 81 women treated for urinary tract endometriosis from July 2009 to December 2015 were included of whom 39 had bladder endometriosis, 31 ureteral endometriosis and 11 both ureteral and bladder endometriosis...
June 14, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28623649/allium-stent-for-the-treatment-of-a-malignant-ureteral-stenosis-a-paradigmatic-case
#7
Marco Oderda, Sergio Lacquaniti, Giuseppe Fasolis
OBJECTIVE: The aim of this study was to present a paradigmatic case where the new-generation Allium URS stent was the optimal choice to treat a malignant ureteral stenosis. METHODS: We describe in detail all the steps of our surgery, performed on a 69-year-old patient with left hydronephrosis caused by lumbo-aortic nodal metastases compressing the ureter. The patient was intolerant to double-J stent due to strong irritative urinary symptoms. Allium URS stent was positioned under fluoroscopy in replacement of pre-existing double-J stent...
June 14, 2017: Urologia
https://www.readbyqxmd.com/read/28621638/urologic-complications-after-renal-transplant-a-single-center-experience
#8
Hakan Sözen, Metin Onaran, Onur Özen, Aydın Dalgıç
OBJECTIVES: Urologic complications after kidney transplant are associated with significant morbidity, mortality, and prolonged hospital stay. An intervention or second surgical procedure is frequently required. Here, we report urologic complications in adult kidney recipients. MATERIALS AND METHODS: Since 2006, 171 adult kidney transplant procedures have been performed at the Gazi University Transplantation Center (Ankara, Turkey). Among these patients, there were 65 adult female (38%) and 106 adult male (62%) recipients...
June 16, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28621156/pilot-study-use-of-contrast-enhanced-ultrasonography-in-feline-renal-transplant-recipients
#9
Esther H Greenbarg, David A Jiménez, Lucas A Nell, Chad W Schmiedt
Objectives The study aims were to evaluate the feasibility of contrast-enhanced ultrasonography in feline renal transplant recipients in the post-transplantation period and to report findings in a case with presumptive delayed allograft ischemia. Methods Cats were imaged postoperatively using contrast harmonic ultrasonography after a bolus injection of a microbubble contrast medium. Time/mean pixel intensity curves were generated for cortical and medullary regions of interest in the renal allograft in each cat...
June 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28619091/the-usefulness-of-flexible-cystoscopy-for-preventing-double-j-stent-malposition-after-laparoscopic-ureterolithotomy
#10
Jae-Yoon Kim, Seok-Ho Kang, Jun Cheon, Jeong-Gu Lee, Je-Jong Kim, Sung-Gu Kang
BACKGROUND: The aim of this study was to evaluate the role of flexible cystoscopy in preventing malpositioning of the ureteral stent after laparoscopic ureterolithotomy in male patients. METHODS: From April 2009 to June 2015, 97 male patients with stones >1.8 cm in the upper ureter underwent intracorporeal double-J stenting of the ureter after laparoscopic ureterolithotomy performed by four different surgeons. In the last 50 patients who underwent laparoscopic ureterolithotomy flexible cystoscopy was performed through the urethral route to confirm the position of the double-J stent, while in the first 47 correct positioning of the stent was confirmed through postoperative KUB...
June 15, 2017: BMC Urology
https://www.readbyqxmd.com/read/28618759/the-effect-of-trimetazidine-on-renal-oxidative-stress-in-partial-and-complete-ureteral-obstructions-in-a-rat-model
#11
Sema Nur Ayyildiz, Ali Ayyildiz, Erdal Benli, Selma Cirrik, Rüştü Cankon Germiyanoğlu, Tevfik Noyan, Abdullah Çirakoğlu
BACKGROUND/AIM: Renal oxidative stress occurs in ureteral obstructions. The purpose of this study was to investigate the effect of the antioxidant and antiischemic agent trimetazidine (TMZ) on oxidative stress following ureteral obstruction. MATERIALS AND METHODS: Ten groups were established. Sham groups were checked as controls after 1 and 3 weeks. The other 8 groups had partial or complete ureteral obstruction while receiving or not receiving trimetazidine (TMZ) at 5 mg/kg daily and were evaluated after either 1 week or 3 weeks...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28617440/the-nf-%C3%AE%C2%BAb1-is-a-key-regulator-of-acute-but-not-chronic-renal-injury
#12
Amy Fearn, Gerhard R Situmorang, Christopher Fox, Fiona Oakley, Rachel Howarth, Caroline L Wilson, Agklinta Kiosia, Michael G Robson, Derek A Mann, Anna Moles, Neil S Sheerin
The NF-κB family of transcription factors is important for many cellular functions, in particular initiation and propagation of inflammatory and immune responses. However, recent data has suggested that different subunits of the NF-κB family can suppress the inflammatory response. NF-κB1, from the locus nfκb1, can inhibit transcription, acting as a brake to the recognised pro-inflammatory activity of other NF-κB subunits. We tested the function of NF-κB1 in an acute (nephrotoxic serum (NTS) nephritis) and a chronic (unilateral ureteric obstruction (UUO)) model of renal injury using NF-κB1 (nfκb1(-/-)) knockout mice...
June 15, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28616591/retained-double-j-stent-with-huge-renal-and-bladder-calculi-extracted-by-percutaneous-nephrolithotomy-and-percutaneous-cystolitholapaxy-in-a-single-encounter
#13
Rajendra B Nerli, Shivagouda M Patil, Prasad Magdum, Vikas Sharma, Shridhar Ghagane, Murigendra B Hiremath, Neeraj Dixit
We report a case of retained Double J ureteral stent with huge, multiple calculi at both ends in a 10-year-old female child. The renal and bladder calculi were managed by percutaneous nephrolithotomy and percutaneous cystolitholapaxy in a single sitting.
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28615647/differential-synchrotron-x-ray-imaging-markers-based-on-the-renal-microvasculature-for-tubulointerstitial-lesions-and-glomerulopathy
#14
Yu-Chuan Lin, Yeukuang Hwu, Guo-Shu Huang, Michael Hsiao, Tsung-Tse Lee, Shun-Min Yang, Ting-Kuo Lee, Nan-Yow Chen, Sung-Sen Yang, Ann Chen, Shuk-Man Ka
High resolution synchrotron microtomography capable of revealing microvessels in three dimensional (3D) establishes distinct imaging markers of mouse kidney disease strongly associated to renal tubulointerstitial (TI) lesions and glomerulopathy. Two complementary mouse models of chronic kidney disease (CKD), unilateral ureteral obstruction (UUO) and focal segmental glomerulosclerosis (FSGS), were used and five candidates of unique 3D imaging markers were identified. Our characterization to differentially reflect the altered microvasculature of renal TI lesions and/or glomerulopathy demonstrated these image features can be used to differentiate the disease status and the possible cause therefore qualified as image markers...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615144/obstructive-acute-renal-failure-by-severe-gastric-distension-after-binge
#15
Julie Dumouchel, Virginie Lvovschi, Luc-Marie Joly
Binge eating occurs in patients with eating disorders and can result in metabolic complications, leading to gastric rupture or necrosis. However, organ failure as acute renal failure is rarely observed. We report the case of an overeating episode resulting in massive gastric dilatation and acute renal failure with abdominal pressure and bilateral ureteral obstruction. The outcome was favorable with gastric aspiration and fasting.
April 27, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28611901/a-comparison-of-urolithiasis-in-the-presence-and-absence-of-microscopic-hematuria-in-the-emergency-department
#16
Jason M Mefford, Robert M Tungate, Leila Amini, Dongjin Suh, Craig L Anderson, Scott E Rudkin, Megan Boysen-Osborn
INTRODUCTION: Urolithiasis is a common medical condition that accounts for a large number of emergency department (ED) visits each year and contributes significantly to annual healthcare costs. Urinalysis is an important screening test for patients presenting with symptoms suspicious for urolithiasis. At present there is a paucity of medical literature examining the characteristics of ureteral stones in patients who have microscopic hematuria on urinalysis versus those who do not. The purpose of this study was to examine mean ureteral stone size and its relationship to the incidence of clinically significant hydronephrosis in patients with and without microscopic hematuria...
June 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28611874/ultrasound-vs-computed-tomography-for-severity-of-hydronephrosis-and-its-importance-in-renal-colic
#17
Megan M Leo, Breanne K Langlois, Joseph R Pare, Patricia Mitchell, Judith Linden, Kerrie P Nelson, Cristopher Amanti, Kristin A Carmody
INTRODUCTION: Supporting an "ultrasound-first" approach to evaluating renal colic in the emergency department (ED) remains important for improving patient care and decreasing healthcare costs. Our primary objective was to compare emergency physician (EP) ultrasound to computed tomography (CT) detection of hydronephrosis severity in patients with suspected renal colic. We calculated test characteristics of hydronephrosis on EP-performed ultrasound for detecting ureteral stones or ureteral stone size >5mm...
June 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28611663/epigenetic-modifications-to-h3k9-in-renal-tubulointerstitial-cells-after-unilateral-ureteric-obstruction-and-tgf-%C3%AE-1-stimulation
#18
Timothy D Hewitson, Stephen G Holt, Sven-Jean Tan, Belinda Wigg, Chrishan S Samuel, Edward R Smith
Introduction: Epigenetic regulation of fibrogenesis through post-translational histone modifications (marks) may be a key determinant of progression in renal disease. In this study, we examined the distribution and acquisition of histone 3 Lysine 9 (H3K9) marks after injury and stimulation with the pro-fibrotic cytokine TGF-β1. Our focus was on their presence in activated fibroblasts (myofibroblasts) and epithelial cells (epithelial-mesenchymal transition). Methods and Results: Immunofluorescent microscopy was used to examine global H3K9 acetylation (H3K9Ac) and tri-methylation (H3K9Me3) after unilateral ureteric obstruction (UUO) in mice...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28611350/fgf23-is-synthesised-locally-by-renal-tubules-and-activates-injury-primed-fibroblasts
#19
Edward R Smith, Sven-Jean Tan, Stephen G Holt, Tim D Hewitson
In kidney disease, higher circulating levels of the mineral-regulating hormone fibroblast growth factor (FGF)-23 are predictive of disease progression but direct pathogenic effects on the kidney are unknown. We sought evidence of local renal synthesis in response to unilateral ureteric obstruction in the mouse, and pro-fibrotic actions of FGF23 on the fibroblast in vitro. Acute tubulointerstitial injury due to unilateral ureteric obstruction stimulated renal FGF23 synthesis by tubules, and downregulated inactivating proprotein convertases, without effects on systemic mineral metabolism...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28611171/pitfalls-of-the-duplex-system-the-mystery-of-the-missing-stone
#20
Donald Kudakwashe Nyanhongo, Satpal Antil, Syed Nasir
A duplex ureter constitutes about 1% of the renal tract anomalies.A 39-year-old man presented with a 4-week history of left loin pain and microscopic haematuria. Investigation with a non-contrast CT KUB revealed a 6 mm non-obstructing calculus in the left distal ureter.Left ureteroscopy and lithotripsy was planned. However, ureteroscopy failed to identify the calculus. A double J ureteric stent was left in situ and the procedure abandoned in favour of further assessment with a CT urogram. Imaging surprisingly showed a left duplex ureter with the calculus in the non-stented ureter...
June 13, 2017: BMJ Case Reports
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