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Hiroki Ito, Omar Aboumarzouk, Faris Abushamma, Francis Keeley
PURPOSE: We performed a systematic review of the literature regarding the diagnosis and treatment of calyceal diverticulum (CD). METHODS: The search strategy was conducted according to the Cochrane reviews guidelines for systematic reviews and Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) checklist. RESULTS: In total 1189 titles and abstracts were reviewed, of which 101 were selected for manuscript evaluation...
June 15, 2018: Journal of Endourology
Arif Demirbas, Veli Mert Yazar, Erim Ersoy, Demirhan Orsan Demir, Serkan Ozcan, Tolga Karakan, Omer Gokhan Doluoglu, Berkan Resorlu, Ahmet Metin Hascicek, Kadir Omur Gunseren
PURPOSE: Comparison of efficiency and reliability of percutaneous nephrolithotomy (PNL) and retrograde intrarenal surgery (RIRS) in treatment of multicalyceal and multiple renal stones in the same renal unit. MATERIALS AND METHODS: Between 2011 and 2015, records of patients who underwent surgery for renal stone were retrospectively reviewed. Patients who had multiple stones located in different calices in the same renal unit were included. The patients that underwent PNL and RIRS were defined as Group I and Group II, respectively...
June 14, 2018: Urology Journal
Selcuk Sarikaya, Ali Unsal, Turgay Ebiloglu, Ridvan Ozbek, G Guvenir, C Senocak, Omer F Bozkurt
OBJECTIVE: Urolithiasis prevalence is 2-20% according to different geographic characteristics in different populations. In this study, we aimed to present the distribution of operation numbers for both percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) in terms of age and stone size in order to reveal the changes over the years. METHOD: Between January 2010 and March 2016, 1814 patients were operated for the treatment of renal stones. Patients were directed to the two different operations according to the surgeons' choices: RIRS or PCNL...
June 2018: Archivos Españoles de Urología
Guohua Zeng, Tao Zhang, Madhu Agrawal, Xiang He, Wei Zhang, Kefeng Xiao, Hulin Li, Xuedong Li, Changbao Xu, Sixing Yang, J J de la Rosette, Junhong Fan, Wei Zhu, Kemal Sarica
OBJECTIVES: To compare the safety and efficacy of super-mini-percutaneous nephrolithotomy (SMP) and retrograde intrarenal surgery (RIRS) for the treatment of 1-2 cm lower-pole renal calculi (LPC). PATIENTS AND METHODS: An international multicenter, prospective, randomized, non-blinded controlled study was conducted at 10 academic medical centers in China, India, and Turkey between August 2015 and June 2017. A total of 160 consecutive patients with 1-2 cm LPC were randomized to receive SMP or RIRS...
June 6, 2018: BJU International
Susanne Deininger, Luis Haberstock, Stephan Kruck, Eva Neumann, Ines Anselmo da Costa, Tilman Todenhöfer, Jens Bedke, Arnulf Stenzl, Steffen Rausch
INTRODUCTION: Retrograde intrarenal surgery (RIRS) represents a standard option for kidney stone removal. However, RIRS is considered a cost-intensive procedure. Single-use flexible ureterorenoscopes have been introduced to improve budget predictability in RIRS. We assessed differences in physical and optical properties of single-use devices compared to standard reusable endoscopes. METHODS: In two single-use (LithoVue™, Boston Scientific; Pusen Uscope UE3011™), and one reusable ureterorenoscope (Flex-Xc™, Karl Storz), we investigated flow rates, deflection, illuminance, and intrapelvic pressure in a porcine kidney model...
June 5, 2018: World Journal of Urology
Bum Sik Tae, Seok Cho, Byung Jo Jeon, Hoon Choi, Jae Young Park, Sung Yong Cho, Keon-Cheol Lee, Jae Hyun Bae
OBJECTIVES: To evaluate the effects of 50 mg once daily mirabegron for ureteral stent-related discomfort after ureteroscopic procedures through a multicenter randomized study. PATIENTS AND METHODS: One hundred patients with indwelling ureteral stents following ureteroscopic stone removal or retrograde intrarenal surgery (RIRS) were randomized 1:1 to receive either no treatment or mirabegron during the stenting period. At the time of stent removal, the validated Ureteral Stent System Questionnaire (USSQ), International Prostate Symptom Score (IPSS), total amount of analgesics administered, and post voiding residual urine volume were reported for each patient...
May 26, 2018: BJU International
Z Rahimi, A A Zinatizadeh, S Zinadini
Polymeric ultrafiltration (UF) membranes often used in membrane bioreactor (MBR) prone to be fouled by fouling agents. Therefore, in this paper, the antifouling characteristics of polyvinilydene fluoride (PVDF) UF membranes for wastewater treatment are improved through modifying membranes by O-carboxymethyl chitosan (OCMCS) functionalized Fe3 O4 nanoparticles (OCMCS-Fe3 O4 ). The modifier agent was manufactured by the adsorption of OCMCS on Fe3 O4 nanoparticles, which were synthesized via co-precipitating method...
May 25, 2018: Environmental Technology
Vasileios Kourmpetis, Snir Dekalo, Tomer Nir, Nadav Levy, Yuval Bar-Yosef, Avi Beri, Ofer Yossepowitch, Mario Sofer
INTRODUCTION: We set out to investigate whether general anesthesia with low ventilation (LV, respiratory rate ≤8/min and tidal volume <500 ml) could reduce renal mobility and thereby facilitate improved retrograde intrarenal surgery (RIRS) compared to general anesthesia with standard ventilation (SV). MATERIALS AND METHODS: All 60 consecutive patients who presented for RIRS in our department from September 1, 2017 to December 31, 2017 were prospectively randomized 1:1 into one group that was selected to receive SV and another that received LV...
May 23, 2018: Journal of Endourology
Mahdi Akbari, Mojtaba Shariaty-Niassar, Takeshi Matsuura, Ahmad Fauzi Ismail
Although polymeric membranes find important role in water and waste water treatment in recent years, their fouling is still an important problem. Application of hydrophilic nanoparticles (NPs) is one of the proposed methods for reducing fouling of membranes but their dispersion and stability in hydrophobic polymer matrix is challenging. In this study Janus functionalization of the NPs was introduced as a promising technique toward achieving this goal. Polysulfone (PSf) membranes containing various concentrations of graphene oxide (GO) nanosheets and Janus graphene oxide (Janus GO) nanosheets (as additives) were fabricated via phase inversion...
May 15, 2018: Journal of Colloid and Interface Science
Volkan Caglayan, Sedat Oner, Efe Onen, Sinan Avci, Murat Aydos, Metin Kilic, Murat Demirbas
BACKGROUND: To evaluate success and complication rates of endourological stone treatments and to evaluate effects of percutaneous nephrolithotomy (PCNL) on renal functions, in patients with solitary kidneys. METHODS: In our center, 3150 patients underwent PCNL between 2003 and 2017 and 142 patients underwent retrograd intrarenal surgery (RIRS) between 2013 and 2017. We retrospectively analysed the data of 82 patients with solitary kidney who underwent PCNL and of 8 patients with solitary kidney who underwent RIRS...
May 14, 2018: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
Zhaohui Liu, Min Qu, Lili Yu, Panpan Song, Yulin Chang
The molecular mechanisms of acute lung injury (ALI) are closely associated with nucleotide-binding domains and leucine-rich repeat (NLR) pyrin domains containing 3 (NLRP3) inflammasome, in which alveolar macrophages (AMs) exert an essential function. Our study has been proved that artesunate (AS) inhibits ALI. Nevertheless, the inhibition actions of AS on activation of NLRP3 in renal ischemia-reperfusion (RIR)-mediated ALI remain to be further discussed. Male Sprague-Dawley rats were randomly assigned into four groups: sham + NS, sham + AS, RIR + NS, and RIR + AS...
May 5, 2018: Inflammation
Zhaofeng Tan, Keding Lu, Meiqing Jiang, Rong Su, Huabin Dong, Limin Zeng, Shaodong Xie, Qinwen Tan, Yuanhang Zhang
We present the in-situ measurements in Chengdu, a major city in south west of China, in September 2016. The concentrations of ozone and its precursor were measured at four sites. Although the campaign was conducted in early autumn, up to 100 ppbv (parts per billion by volume) daily maximum ozone was often observed at all sites. The observed ozone concentrations showed good agreement at all sites, which implied that ozone pollution is a regional issue in Chengdu. To better understand the ozone formation in Chengdu, an observation based model is used in this study to calculate the ROx radical concentrations (ROx  = OH + HO2  + RO2 ) and ozone production rate (P(O3 ))...
May 1, 2018: Science of the Total Environment
Sunil Mhaske, Mehul Singh, Abhirudra Mulay, Sharadkumar Kankalia, Vikram Satav, Vilas Sabale
Aim: The aim of this study is to compare the outcomes of miniaturized percutaneous nephrolithotomy (mini-perc) and retrograde intrarenal surgery (RIRS) in management of renal stones with a diameter <15 mm. Materials and Methods: This was an open-label prospective study that included a total of 80 cases underwent mini-perc ( n = 40) and RIRS ( n = 40) between July 2014 and August 2017. The primary outcome objective was stone-free rate, retreatment rate, complications, hospital stay, operative time, and reduction in hemoglobin level...
April 2018: Urology Annals
Vito Mancini, Luigi Cormio, Nicola d'Altilia, Giuseppe Benedetto, Paolo Ferrarese, Matteo Balzarro, Lorenzo Defidio, Giuseppe Carrieri
INTRODUCTION: To report the long-term multicenter experience with retrograde intrarenal holmium-laser incision (RIR-HoLI) in the management of symptomatic renal sinus cysts (RSCs). In the literature, RIR-HoLI has been shown to be a safe and effective treatment, but there are only a few reports regarding long-term results and reproducibility of this procedure. MATERIAL AND METHODS: From June 2010 to June 2015, 14 patients with symptomatic RSCs underwent RIR-HoLI...
May 2, 2018: Urologia Internationalis
F M Sánchez-Martín, E Emiliani, E Pueyo-Morer, O Angerri-Feu, F Sanguedolce, F Millán, H Villavicencio
INTRODUCTION: There are currently 3holmium laser, YAG (Ho:YAG) endolithotripsy procedures that are considered basic (fragmentation, pulverisation, "pop-corn" technique). We present the technique of fragmentation targeted at preferred discontinuities (FTPD), a new concept of endolithotripsy by Ho:YAG laser. MATERIAL AND METHODS: The FTPD technique is based on the selective application of energy (targeting a specific preselected point) to an area that is visually prone to the formation of a fracture line or preferred discontinuity (conditioned by the anisotropy of the urolithiasis)...
April 17, 2018: Actas Urologicas Españolas
Kai Li, Qi Feng, Guangle Niu, Weijie Zhang, Yuanyuan Li, Miaomiao Kang, Kui Xu, Juan He, Hongwei Hou, Ben Zhong Tang
In this work, a benzothiazole-based aggregation-induced emission luminogen (AIEgen) of 2-(5-(4-carboxyphenyl)-2-hydroxyphenyl)benzothiazole (3) was designed and synthesized, which exhibited multifluorescence emissions in different dispersed or aggregated states based on tunable excited-state intramolecular proton transfer (ESIPT) and restricted intramolecular rotation (RIR) processes. 3 was successfully used as a ratiometric fluorescent chemosensor for the detection of pH, which exhibited reversible acid/base-switched yellow/cyan emission transition...
May 25, 2018: ACS Sensors
Lewei Zeng, Xiaopu Lyu, Hai Guo, Shichun Zou, Zhenhao Ling
Alkyl nitrates (RONO2 ) are important reservoirs of atmospheric nitrogen, regulating nitrogen cycling and ozone (O3 ) formation. In this study, we found that propane and n-butane were significantly lower at the offshore site (WSI) in Hong Kong ( p < 0.05), whereas C3 -C4 RONO2 were comparable to the suburban site (TC) ( p > 0.05). Stronger oxidative capacity at WSI led to more efficient RONO2 formation. Relative incremental reactivity (RIR) was for the first time used to evaluate RONO2 -precursor relationships...
May 15, 2018: Environmental Science & Technology
Cuma Mertoglu, Aliseydi Bozkurt, Ercüment Keskin, Murat Gunay
Objective: To investigate the effect of retrograde intra-renal surgery (RIRS) on kidneys using the myo-inositol oxygenase (MIOX) enzyme. MIOX is a renal tubular-specific novel marker for the early diagnosis of acute kidney injury. Methods: A total of twenty seven individuals that had undergone RIRS to treat kidney stones were included in the study. Biochemical tests were performed on serum samples collected immediately before RIRS (hour 0) and at the 6th and 24th hours after the surgery...
January 2018: Pakistan Journal of Medical Sciences Quarterly
Hsiang-Ruei Liao, Ih-Sheng Chen, Fu-Chao Liu, Shinn-Zhi Lin, Ching-Ping Tseng
This study investigates the effect and the underlying mechanism of 2',3-dihydroxy-5-methoxybiphenyl (RIR-2), a lignan extracted from the roots of Rhaphiolepis indica (L.) Lindl. ex Ker var. tashiroi Hayata ex Matsum. & Hayata (Rosaceae), on N-formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLP)-induced respiratory burst and cathepsin G in human neutrophils. Signaling pathways regulated by RIR-2 which modulated fMLP-induced respiratory burst were evaluated by an interaction between β subunit of G-protein (Gβ) with downstream signaling induced by fMLP and by immunoblotting analysis of the downstream targets of Gβ-protein...
June 15, 2018: European Journal of Pharmacology
Andrea Bosio, Ettore Dalmasso, Eugenio Alessandria, Simone Agosti, Giuseppe Pizzuto, Dario Peretti, Anna Palazzetti, Alessandro Bisconti, Paolo Destefanis, Fabrizio Fop, Paolo Gontero
BACKGROUND: Retrograde intra-renal surgery (RIRS) has become increasingly common and is mainly performed under general anesthesia (GA). There are no specific papers about RIRS performed under spinal anesthesia (SA). Our objective was to evaluate feasibility and results of RIRS performed under spinal anesthesia (SA). METHODS: We analysed all consecutive RIRS performed for stones in day surgery from March 2008 to September 2012. Single procedures outcomes of RIRS performed under SA were evaluated with US and KUB X-ray at 2 weeks...
March 28, 2018: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
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