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https://www.readbyqxmd.com/read/28074861/deployment-of-check-in-nodes-in-complex-networks
#1
Zhong-Yuan Jiang, Jian-Feng Ma
In many real complex networks such as the city road networks and highway networks, vehicles often have to pass through some specially functioned nodes to receive check-in like services such as gas supplement at gas stations. Based on existing network structures, to guarantee every shortest path including at least a check-in node, the location selection of all check-in nodes is very essential and important to make vehicles to easily visit these check-in nodes, and it is still remains an open problem in complex network studies...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28067455/room-temperature-regioselective-catalytic-hydrodefluorination-of-fluoroarenes-with-trans-ru-nhc-4-h2-through-a-concerted-nucleophilic-ru-h-attack-pathway
#2
Mateusz K Cybulski, David McKay, Stuart A Macgregor, Mary F Mahon, Michael K Whittlesey
The efficient and highly selective room temperature hydrodefluorination (HDF) of fluoroarenes by the trans-[Ru(IMe4 )4 H2 ] catalyst, 3, is reported. Mechanistic studies show 3 acts directly in catalysis without any ligand dissociation and DFT calculations indicate a concerted nucleophilic attack mechanism. The calculations fully account for the observed selectivities which corroborate earlier predictions regarding the selectivity of HDF.
January 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28044236/vascular-adhesion-protein-1-in-hemodialysis-and-hemodiafiltration-patients-effect-of-single-hemodialysis-session-on-its-level-in-regard-to-type-of-anticoagulant
#3
Jolanta Malyszko, Ewa Koc-Zorawska, Piotr Kozminski, Jacek S Malyszko
PURPOSE: Traditional anticoagulants used in intermittent hemodialysis (HD) are unfractionated heparin (UFH) and increasingly low molecular weight heparins (LMWHs). Repeated and prolonged exposure to UFH and/or LMWHs may further disturb hemostasis in uremic patients. Vascular adhesion protein-1 (VAP-1) is secreted by vascular smooth muscle cells, adipocytes and endothelial cells with functional monoamine oxidase activity and is elevated in atherosclerosis, diabetes mellitus and obesity...
January 2, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28042265/comparative-evaluation-of-platelet-rich-fibrin-versus-beta-tri-calcium-phosphate-in-the-treatment-of-grade-ii-mandibular-furcation-defects-using-cone-beam-computed-tomography
#4
Zeba Rahman Siddiqui, Rajesh Jhingran, Vivek Kumar Bains, Ruchi Srivastava, Rohit Madan, Iram Rizvi
OBJECTIVE: The objective of the study was to evaluate clinically and radiographically the efficacy of platelet-rich fibrin (PRF) versus β-tri-calcium phosphate (β-TCP) in the treatment of Grade II mandibular furcation defects. MATERIALS AND METHODS: Forty-five Grade II furcation defect in mandibular molars which were assigned to open flap debridement (OFD) with PRF Group I (n = 15), to OFD with β-TCP Group II (n = 15), and to OFD alone Group III (n = 15) were analyzed for clinical parameters (probing pocket depth [PPD], vertical clinical attachment level [VCAL], horizontal clinical attachment level [HCAL], gingival recession, relative vertical height of furcation [r-VHF], and relative horizontal depth of furcation [r-HDF]) and radiographical parameters (horizontal depth of furcation [H-DOF], vertical height of furcation [V-HOF]) using cone-beam computed tomography (CBCT) at 6 months interval...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28033679/peritoneal-dialysis-registry-with-2013-survey-report
#5
Ikuto Masakane, Takeshi Hasegawa, Satoshi Ogata, Naoki Kimata, Shigeru Nakai, Norio Hanafusa, Takayuki Hamano, Kenji Wakai, Atsushi Wada, Kosaku Nitta
Since 2009, the peritoneal dialysis (PD) registry has been carried out as part of the annual nationwide survey conducted by the Statistical Survey Committee of the Japanese Society for Dialysis Therapy with the cooperation of the Japanese Society for Peritoneal Dialysis. In this study, the current status of PD patients is reported on the basis of the results of the survey conducted at the end of 2013. The subjects were PD patients who lived in Japan and participated in the 2013 survey. Descriptive analysis was performed for various items including the current status of the combined use of PD and another dialysis method such as hemodialysis (HD) or hemodiafiltration (HDF), the method of exchanging dialysate, the use of an automated peritoneal dialysis (APD) machine, and the incidences of peritonitis and catheter exit-site infection...
December 2016: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28025382/mortality-reduction-by-post-dilution-online-haemodiafiltration-a-cause-specific-analysis
#6
Menso J Nubé, Sanne A E Peters, Peter J Blankestijn, Bernard Canaud, Andrew Davenport, Muriel P C Grooteman, Gulay Asci, Francesco Locatelli, Francisco Maduell, Marion Morena, Ercan Ok, Ferran Torres, Michiel L Bots
BACKGROUND: From an individual participant data (IPD) meta-analysis from four randomized controlled trials comparing haemodialysis (HD) with post-dilution online-haemodiafiltration (ol-HDF), previously it appeared that HDF decreases all-cause mortality by 14% (95% confidence interval 25; 1) and fatal cardiovascular disease (CVD) by 23% (39; 3). Significant differences were not found for fatal infections and sudden death. So far, it is unclear, however, whether the reduced mortality risk of HDF is only due to a decrease in CVD events and if so, which CVD in particular is prevented, if compared with HD...
December 26, 2016: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28024931/a-randomized-single-blind-crossover-trial-of-recovery-time-in-high-flux-hemodialysis-and-hemodiafiltration
#7
James R Smith, Norica Zimmer, Elizabeth Bell, Bernard G Francq, Alex McConnachie, Robert Mactier
BACKGROUND: The choice between hemodiafiltration (HDF) or high-flux hemodialysis (HD) to treat end-stage kidney disease remains a matter of debate. The duration of recovery time after treatment has been associated with mortality, affects quality of life, and may therefore be important in informing patient choice. We aimed to establish whether recovery time is influenced by treatment with HDF or HD. STUDY DESIGN: Randomized patient-blinded crossover trial. SETTINGS & PARTICIPANTS: 100 patients with end-stage kidney disease were enrolled from 2 satellite dialysis units in Glasgow, United Kingdom...
December 23, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27995744/online-hemodiafiltration-reduces-bisphenol-a-levels
#8
Borja Quiroga, Ricardo J Bosch, Ruth A Fiallos, Marta Sánchez-Heras, Nuria Olea-Herrero, Pilar López-Aparicio, Carmen Muñóz-Moreno, Miguel Angel Pérez-Alvarsan, Gabriel De Arriba
Several uremic toxins have been identified and related to higher rates of morbidity and mortality in dialysis patients. Bisphenol A (BPA) accumulates in patients with chronic kidney disease. The aim of this study is to demonstrate the usefulness of online hemodiafiltration (OL-HDF) in reducing BPA levels. Thirty stable hemodialysis patients were selected to participate in this paired study. During three periods of 3 weeks each, patients were switched from high-flux hemodialysis (HF-HD) to OL-HDF, and back to HF-HD...
December 20, 2016: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/27987825/a-composite-chitosan-gelatin-bi-layered-biomimetic-macroporous-scaffold-for-blood-vessel-tissue-engineering
#9
Ravindra V Badhe, Divya Bijukumar, Dharmesh R Chejara, Mostafa Mabrouk, Yahya E Choonara, Pradeep Kumar, Lisa C du Toit, Pierre P D Kondiah, Viness Pillay
A composite chitosan-gelatin macroporous hydrogel-based scaffold with bi-layered tubular architecture was engineered by solvent casting-co-particulate leaching. The scaffold constituted an inner macroporous layer concealed by a non-porous outer layer mimicking the 3D matrix of blood vessels with cellular adhesion and proliferation. The scaffold was evaluated for its morphological, physicochemical, physicomechanical and biodurability properties employing SEM, FTIR, DSC, XRD, porositometry, rheology and texture analysis...
February 10, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/27980383/using-the-cytokinesis-block-micronucleus-cytome-assay-to-evaluate-chromosomal-dna-damage-in-chronic-renal-patients-undergoing-bicarbonate-haemodialysis-and-haemodiafiltration
#10
REVIEW
M Guido, A Zizza, M R Tumolo, G Stefanelli, M D'Alba, A Idolo, F Bagordo, F Serio, T Grassi, A DE Donno
INTRODUCTION: Chronic Renal Failure (CRF) patients are considered to show genomic instability and are associated with a high risk of both cardiovascular diseases and cancer. We explored DNA damage due to two dialysis treatments in 20 patients undergoing bicarbonate haemodialysis (BD), 20 undergoing haemodiafiltration (HDF) and 40 healthy subjects. METHODS: The cytokinesis-block micronucleus (MN) assay was performed on peripheral blood lymphocytes to evaluate genetic damage...
September 2016: Journal of Preventive Medicine and Hygiene
https://www.readbyqxmd.com/read/27965915/mixed-fibronectin-derived-peptides-conjugated-to-a-chitosan-matrix-effectively-promotes-biological-activities-through-integrins-%C3%AE-4%C3%AE-1-%C3%AE-5%C3%AE-1-%C3%AE-v%C3%AE-3-and-syndecan
#11
Kentaro Hozumi, Kyotaro Nakamura, Haruna Hori, Mari Miyagi, Rika Nagao, Keiko Takasaki, Fumihiko Katagiri, Yamato Kikkawa, Motoyoshi Nomizu
Mimicking the biological function of the extracellular matrix is an approach to developing cell adhesive biomaterials. The RGD peptide, derived from fibronectin (Fn), mainly binds to integrin αvβ3 and has been widely used as a cell adhesive peptide on various biomaterials. However, cell adhesion to Fn is thought to be mediated by several integrin subtypes and syndecans. In this study, we synthesized an RGD-containing peptide (FIB1) and four integrin α4β1-binding-related motif-containing peptides (LDV, IDAPS, KLDAPT, and PRARI) and constructed peptide-chitosan matrices...
2016: BioResearch Open Access
https://www.readbyqxmd.com/read/27960307/-%C3%AF-hole-%C3%AF-interaction-promoted-photocatalytic-hydrodefluorination-via-inner-sphere-electron-transfer
#12
Jingzhi Lu, Navneet S Khetrapal, Jacob A Johnson, Xiao Cheng Zeng, Jian Zhang
We describe a metal-free, photocatalytic hydrodefluorination (HDF) of polyfluoroarenes (FA) using pyrene-based photocatalysts (Py). The weak "π-hole-π" interaction between Py and FA promotes the electron transfer against unfavorable energetics (ΔGET up to 0.63 eV) and initiates the subsequent HDF. The steric hindrance of Py and FA largely dictates the HDF reaction rate, pointing to an inner-sphere electron transfer pathway. This work highlights the importance of the size and shape of the photocatalyst and the substrate in controlling the electron transfer mechanism and rates as well as the overall photocatalytic processes...
December 14, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27951579/evidence-for-the-clinical-advantages-of-predilution-on-line-hemodiafiltration
#13
Ikuto Masakane, Kan Kikuchi, Hideki Kawanishi
BACKGROUND: On-line hemodiafiltration (OL-HDF) is a rapidly developing dialysis modality that is expected to ameliorate the quality of life and survival rate of chronic dialysis patients. There are generally 2 types of dilution methods in OL-HDF: postdilution and predilution. SUMMARY: Postdilution OL-HDF is widely performed worldwide, whereas predilution OL-HDF accounts for >90% of all OL-HDF sessions performed in Japan. The reasons for the preference for predilution are to increase the substitution volume at a lower blood flow rate and to remove larger low-molecular-weight proteins (LMWPs)...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951574/clinical-performance-assessment-of-cordiax-filters-in-hemodialysis-and-hemodiafiltration
#14
Jacky Potier, Sudhir Bowry, Bernard Canaud
In this study, we evaluate the in vivo clinical performances of CorDiax FX 100 and CorDiax FX 1000 filters incorporating a high-flux membrane (Helixone Plus) designed for use in high-flux hemodialysis (HD) as well as in hemodiafiltration (HDF) in 6 stable end-stage kidney disease patients. In the HDF mode, various substitution modalities (post-, pre-, and mixed) were compared. In addition to conventional markers of efficacy of dialysis dose (urea, ionic dialysance, Kt/V), several additional middle- and large-size solute (β2-microglobulin, myoglobin, serum-free light-chain kappa and lambda, α1-microglobulin, and FGF23) compounds were explored in order to cover the spectrum of uremic toxins that are involved in uremia...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951570/biocompatibility-of-hemodiafilters
#15
Tadashi Tomo
BACKGROUND: Biocompatibility and the efficiency of solute removal are important considerations in blood purification therapy. Improvement of biocompatibility is expected to lead to the prevention of dialysis-related complications (e.g. amyloidosis, arteriosclerosis, and malnutrition) and to the delay of disease progression by alleviating microinflammation. SUMMARY: The biocompatibility of dialyzers is greatly influenced by the interaction between blood and the treatment materials, in which the chemical and physical characteristics of membrane materials play important roles...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951567/evidence-for-targeting-low-molecular-weight-proteins-in-hemodialysis-and-hemodiafiltration
#16
Kenji Tsuchida, Kojiro Nagai, Narushi Yokota, Satoru Yamada, Hiroyuki Michiwaki, Jun Minakuchi
BACKGROUND: With the identification of β2-microglobulin (β2MG) as an active participant in dialysis-related amyloid fibril formation, low-molecular-weight proteins (LMWPs) are now recognized as a distinct class of uremic toxins, and numerous compounds in this category have been identified. The class of LMWPs, although not precisely defined, has a molecular weight range of approximately 1,000-50,000 Da. With this in mind, dialysis prescriptions have been modified to increase the efficiency of uremic solute removal...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951547/are-there-any-downsides-barriers-or-challenges-in-delivering-hemodiafiltration-in-everyday-clinical-practice
#17
Peter J Blankestijn, Muriel Grooteman, Menso Nube
There is considerable evidence to suggest that on-line hemodiafiltration (HDF) is superior to standard hemodialysis when comparing effects on clinical end points, especially when a certain minimum convection volume can be achieved. In this chapter we address the question of whether there are any downsides, challenges, or barriers in delivering on-line HDF in everyday clinical practice. We discuss the subject from a medical/practical point of view and briefly from a financial/economic perspective.
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951546/clinical-effectiveness-of-intermittent-infusion-hemodiafiltration-using-backfiltration-of-ultrapure-dialysis-fluid-compared-with-predilution-on-line-hemodiafiltration
#18
Michio Mineshima, Kei Eguchi, Kanji Shishido, Susumu Takahashi, Tsukasa Kubo, Hiroshi Kawaguchi, Kouzo Shitomi, Keigo Shibagaki, Kiichi Suga, Hirotomo Nagao, Mikihiko Takada, Masahiro Taoka, Takashi Sato
BACKGROUND: In conventional hemodialysis (HD) treatment, excessive water removal sometimes induces a rapid drop in blood pressure. Intermittent infusion hemodiafiltration (I-HDF) has been developed to improve patients' peripheral circulation by repeated intermittent infusion during HD treatment. SUMMARY: A prospective, multicenter, parallel group comparative trial examined the clinical effectiveness of I-HDF compared with predilution on-line HDF (pre-HDF), the most popular on-line HDF therapy in Japan...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951545/what-is-the-optimal-target-convective-volume-in-on-line-hemodiafiltration-therapy
#19
Bernard Canaud, Katrin Koehler, Sudhir Bowry, Stefano Stuard
Conventional diffusion-based dialysis modalities including high-flux hemodialysis are limited in their capacity to effectively remove large uremic toxins and to improve outcomes for end-stage chronic kidney disease (ESKD) patients. By increasing convective solute transport, hemodiafiltration (HDF) enhances solute removal capacity over a broad range of middle- and large-size uremic toxins implicated in the pathophysiology of chronic kidney disease. Furthermore, by offering flexible convection volume, on-line HDF permits customizing the treatment dose to the patient's needs...
2017: Contributions to Nephrology
https://www.readbyqxmd.com/read/27951544/haemodiafiltration-at-higher-volumes-and-patient-survival
#20
Francesco Locatelli, Lucia Del Vecchio, Vincenzo La Milia
Patient morbidity and mortality rates are still very high in standard low-flux haemodialysis (lf-HD). On-line haemodiafiltration (OL-HDF) is considered the most efficient dialysis technique, as clearances of small solutes, like urea, may be even higher than in lf-HD and clearances of middle solutes, like β2-microglobulin, are much higher than in lf-HD. OL-HDF has been suggested to reduce mortality compared to HD, possibly due to more effective removal of larger uraemic retention solutes and/or better fluid removal...
2017: Contributions to Nephrology
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