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Pd solutions

Klaus Kratochwill, Michael Boehm, Rebecca Herzog, Katharina Gruber, Anton Michael Lichtenauer, Lilian Kuster, Dagmar Csaicsich, Andreas Gleiss, Seth L Alper, Christoph Aufricht, Andreas Vychytil
BACKGROUND: Peritonitis and ultrafiltration failure remain serious complications of chronic peritoneal dialysis (PD). Dysfunctional cellular stress responses aggravate peritoneal injury associated with PD fluid exposure, potentially due to peritoneal glutamine depletion. In this randomized cross-over phase I/II trial we investigated cytoprotective effects of alanyl-glutamine (AlaGln) addition to glucose-based PDF. METHODS: In a prospective randomized cross-over design, 20 stable PD outpatients underwent paired peritoneal equilibration tests 4 weeks apart, using conventional acidic, single chamber 3...
2016: PloS One
Zebin Wang, Yueqiang Wen, Jianbo Liang, Xinling Liang, Wei Shi
Left ventricular (LV) diastolic function was found to be a significant predictor of cardiovascular events and general mortality in dialysis. Studies have indicated that dialysate calcium concentrations were significantly associated with cardiac function. However, the relationship between low calcium dialysate and LV diastolic function has not been clear. The aim of this study was to investigate the influence of low calcium dialysate on cardiac function in peritoneal dialysis (PD) patients. A total of 60 PD patients were enrolled in this study, with a calcium content of the PD solution of 1...
October 19, 2016: Renal Failure
Orjan Skogar, Johan Lokk
This review focuses on the diagnosis and management of Parkinson-related pain which is one of the more frequently reported nonmotor symptoms in Parkinson's disease (PD), which is the second most common neurodegenerative disease after Alzheimer's disease. Pain is ranked high by patients as a troublesome symptom in all stages of the disease. In early-stage PD, pain is rated as the most bothersome symptom. Knowledge of the correct diagnosis of pain origin and possible methods of treatments for pain relief in PD is of great importance...
2016: Journal of Multidisciplinary Healthcare
Sadudee Peerapornratana, Pajaree Chariyavilaskul, Talerngsak Kanjanabuch, Kearkiat Praditpornsilpa, Somchai Eiam-Ong, Pisut Katavetin
♦ Background: Current guidelines suggest that intraperitoneal (IP) antibiotics should be administered only in a long peritoneal dialysis (PD) dwell (≥ 6 hours). The long dwell might result in low ultrafiltration and volume overload. We aim to examine plasma and dialysate concentration of cefazolin and ceftazidime after IP administration in a short-dwell (≤ 2 hours) automated cyclingexchange. ♦ Methods: Stable PD patients without peritonitis were invited to participate in the present study. Patients underwent 5 2-liter exchanges of PD fluid over 10 hours by the PD cycling machine without last fill or additional dwell...
October 13, 2016: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
D Espa, L Pilia, L Marchiò, F Artizzu, G Di Carlo, D Marinotto, A Serpe, F Tessore, P Deplano
A film of [Pd(R2pipdt)(dmit)] (1), where R2pipdt = 1,4-didodecyl-piperazine-2,3-dithione (acceptor) and dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate (donor) incorporated into a polymethylmethacrylate (PMMA) matrix, showing a good second-harmonic generation, has been prepared for the first time in the class of dithione-dithiolate 2nd order NLO-chromophores. Moreover full characterization of 1, including molecular second-order NLO properties in solution, is reported.
October 13, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Katrina Brendle, Ulrike Schwarz, Patrick Jäger, Patrick Weis, Manfred M Kappes
We have combined ion mobility mass spectrometry with quantum chemical calculations to investigate the gas phase structures of multiply negatively charged oligomers of meso-tetra(4-sulfonatophenyl)metalloporphyrins comprising the divalent metal centers Zn(II), Cu(II) and Pd(II). Sets of candidate structures were obtained by geometry optimizations based on calculations at both the semiempirical PM7and DFT levels. The corresponding theoretical cross sections were calculated with the projection approximation and also with the trajectory method...
October 11, 2016: Journal of Physical Chemistry. A
Lara Massai, Alessandro Pratesi, Jovana Bogojeski, Marco Banchini, Serena Pillozzi, Luigi Messori, Živadin D Bugarčić
Three Pd(II) and Pt(II) complexes with chelating mono(imidazolin-2-imine) and bis(imidazolin-2-imine) ligands i.e. [Pd(DMEAIm(iPr))Cl2] (1) (DMEAIm(iPr), 2-(1,3-diisopropyl-4,5-dimethylimidazolin-2-imine)ethan-1-dimethylamine), [Pd(DACH(Im(iPr))2)Cl2] (2) (DACH(Im(iPr))2, N,N'-(cyclohexane-1,2-diyl)bis(1,3-diisopropyl-4,5-dimethylimidazolin-2-imine)) and [Pt(DMEAIm(iPr))Cl2] (3), are evaluated here as potential cytotoxic and anticancer agents. An acceptable solution behaviour was found for the three study compounds in terms of solubility and stability...
September 30, 2016: Journal of Inorganic Biochemistry
Práxedes Sánchez, Martín Hernández-Juárez, Eleuterio Álvarez, Margarita Paneque, Nuria Rendón, Andrés Suárez
Coordination studies of new lutidine-derived hybrid NHC/phosphine ligands (CNP) to Pd and Ir have been performed. Treatment of the square-planar [Pd(CNP)Cl](AgCl2) complex 2a with KHMDS produces the selective deprotonation at the CH2P arm of the pincer to yield the pyridine-dearomatised complex 3a. A series of cationic [Ir(CNP)(cod)](+) complexes 4 has been prepared by reaction of the imidazolium salts 1 with Ir(acac)(cod). These derivatives exhibit in the solid state, and in solution, a distorted trigonal bipyramidal structure in which the CNP ligands adopt an unusual C(axial)-N(equatorial)-P(equatorial) coordination mode...
October 4, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Marlene Kolter, Konrad Koszinowski
The reduction of Pd(II) precatalysts to catalytically active Pd(0) species is a key step in many palladium-mediated cross-coupling reactions. Besides phosphines, the stoichiometrically used organometallic reagents can afford this reduction, but do so in a poorly understood way. To elucidate the mechanism of this reaction, we have treated solutions of Pd(OAc)2 and a phosphine ligand L in tetrahydrofuran with RMgCl (R=Ph, Bn, Bu) as well as other organometallic reagents. Analysis of these model systems by electrospray- ionization mass spectrometry found palladate(II) complexes [Ln PdR3 ](-) (n=0 and 1), thus pointing to the occurrence of transmetallation reactions...
September 22, 2016: Chemistry: a European Journal
Zahra Hemmatian, Scott Keene, Erik Josberger, Takeo Miyake, Carina Arboleda, Jessica Soto-Rodríguez, François Baneyx, Marco Rolandi
In biological systems, intercellular communication is mediated by membrane proteins and ion channels that regulate traffic of ions and small molecules across cell membranes. A bioelectronic device with ion channels that control ionic flow across a supported lipid bilayer (SLB) should therefore be ideal for interfacing with biological systems. Here, we demonstrate a biotic-abiotic bioprotonic device with Pd contacts that regulates proton (H(+)) flow across an SLB incorporating the ion channels Gramicidin A (gA) and Alamethicin (ALM)...
October 7, 2016: Nature Communications
Helene Strauch, Jörn Engelmann, Klaus Scheffler, Hermann A Mayer
A fast and simple route was developed to synthesize a new T8-silsesquioxane based contrast agent for potential application in Magnetic Resonance Imaging. For this purpose the novel C2-thiol-functionalized T8-silsesquioxane (3) was constructed as a carrier molecule as well as the DOTA based gadolinium(iii) complex (11) equipped with allyl terminated linkers was prepared. The linkage of the complexes to the T8-silsesquioxane was performed via an UV-light catalyzed thiol-ene click reaction within one hour which affords the desired product 13 in a yield of 80%...
September 27, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Lenka Svecova, Nicolas Papaiconomou, Isabelle Billard
The extraction of Pd(ii) and Rh(iii) from acidic solutions containing between 1 and 8 M HCl towards three ionic liquids, namely [P66614][Cl], [P66614][Br] and [P66614][DCA], based on the trihexyltetradecylphosphonium cation ([P66614]) and chloride, bromide or dicyanamide (DCA) anions, respectively, is reported. Extraction of Pd(ii) is quantitative up to 6 M HCl (D > 3000). A value of 258 for the distribution coefficient of Rh(iii) extracted from 1 M HCl towards [P66614][Br] is also reported. [P66614][Cl] and [P66614][Br] were found to be very efficient at separating these two metals from aqueous solutions containing at least 6 mol L(-1) HCl...
September 27, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Teresa F Vaughan, John L Spencer
The synthesis and coordination behaviour of the pyridylphosphine ligand o-C6H4(CH2PPy2)2 (Py = 2-pyridyl) are reported. The phosphine selenide was synthesised and the (1)JPSe value of 738 Hz indicates the phosphorus atoms have a similar basicity to PPh3. The ligand reacts with platinum(ii) and palladium(ii) complexes to give simple diphosphine complexes of the type [MX2(PP)] (M = Pt, X = Cl, I, Me, Et; M = Pd, X = Cl, Me). When the ligand is reacted with chloromethyl(hexa-1,5-diene)platinum the [PtClMe(PP)] complex results, from which a series of unsymmetrical platinum complexes of the type [PtMeL(PP)](+) (L = PPh3, PTA, SEt2 and pyridine) can be made...
September 28, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Xiaochen Cai, Subhojit Majumdar, George C Fortman, Anjaneyulu Koppaka, Leonardo Serafim, Burjor Captain, Manuel Temprado, Carl D Hoff
The kinetics of the reaction of Ph3SnH with excess •Cr(CO)3C5Me5 = •Cr, producing HCr and Ph3Sn-Cr, was studied in toluene solution under 2-3 atm CO pressure in the temperature range of 17-43.5 °C. It was found to obey the rate equation d[Ph3Sn-Cr]/dt = k[Ph3SnH][•Cr] and exhibit a normal kinetic isotope effect (kH/kD = 1.12 ± 0.04). Variable-temperature studies yielded ΔH(‡) = 15.7 ± 1.5 kcal/mol and ΔS(‡) = -11 ± 5 cal/(mol·K) for the reaction. These data are interpreted in terms of a two-step mechanism involving a thermodynamically uphill hydrogen atom transfer (HAT) producing Ph3Sn• and HCr, followed by rapid trapping of Ph3Sn• by excess •Cr to produce Ph3Sn-Cr...
October 5, 2016: Inorganic Chemistry
L Giancardo, A Sánchez-Ferro, T Arroyo-Gallego, I Butterworth, C S Mendoza, P Montero, M Matarazzo, J A Obeso, M L Gray, R San José Estépar
Parkinson's disease (PD) is a slowly progressing neurodegenerative disease with early manifestation of motor signs. Objective measurements of motor signs are of vital importance for diagnosing, monitoring and developing disease modifying therapies, particularly for the early stages of the disease when putative neuroprotective treatments could stop neurodegeneration. Current medical practice has limited tools to routinely monitor PD motor signs with enough frequency and without undue burden for patients and the healthcare system...
October 5, 2016: Scientific Reports
Alexander S Mikherdov, Mikhail A Kinzhalov, Alexander S Novikov, Vadim P Boyarskiy, Irina A Boyarskaya, Dmitry V Dar'in, Galina L Starova, Vadim Yu Kukushkin
The reaction of cis-[PdCl2(CNXyl)2] (Xyl = 2,6-Me2C6H3) with various 1,3-thiazol- and 1,3,4-thiadiazol-2-amines in chloroform gives a mixture of two regioisomeric binuclear diaminocarbene complexes. For 1,3-thiazol-2-amines the isomeric ratio depends on the reaction conditions and kinetically (KRs) or thermodynamically (TRs) controlled regioisomers were obtained at room temperature and on heating, respectively. In CHCl3 solutions, the isomers are subject to reversible isomerization accompanied with the cleavage of Pd-N and С-N bonds in the carbene fragment XylNCN(R)Xyl...
October 4, 2016: Journal of the American Chemical Society
Himadri Saikia, Biraj Jyoti Borah, Yusuke Yamada, Pankaj Bharali
The present work reports a surfactant-free, economically feasible chemical route to synthesize bimetallic CuPd alloy nanoparticles under hydrothermal condition. The structural and morphological characterizations of the nanoparticles are carried out by XRD, SEM/EDX, TEM, XPS and BET surface area analyses. The synthetic strategy comprises of 9:1 molar composition of Cu(2+) and Pd(2+) salt in the aqueous solution. The size of the nanoparticles isca. 3-4nmwith very notable specific surface area of 298m(2)g(-1)...
September 26, 2016: Journal of Colloid and Interface Science
Srinu Nagireddi, Vimal Katiyar, Ramgopal Uppaluri
Deliberating upon the role of solution chemistry in influencing the Pd(II) adsorption and desorption characteristics using chitosan based resins, this work addresses the competence of glutaraldehyde cross-linked chitosan (GCC) co-polymer resin for the removal and recovery of Pd(II) from synthetic electroless plating solutions. GCC copolymer adsorbent was prepared by grafting of fixed weight ratio (1/17) of medium molecular weight chitosan and glutaraldehyde (25% in H2O). Within the adsorption parametric range of 2-10pH, 60-300min contact time, 10-50mg adsorbent dosage and 50-500mg/L initial Pd(II) concentration, the solution chemistry associated to synthetic ELP solution has been evaluated to strongly reduce the adsorption capacity of the GCC resin...
September 27, 2016: International Journal of Biological Macromolecules
Zhifang Wang, Jing Chang, Yuchen Hu, Yifu Yu, Yamei Guo, Bin Zhang
Microporous organic networks (MONs) have been considered as an ideal substrate to stabilize active metal nanoparticles. However, the development of highly water-dispersible hollow MONs nanostructures which can serve as both the reducing agent and stabilizer is highly desirable but still challenging. Here we report a template-assisted method to synthesize hollow microporous organic network (H-MON) spheres using silica spheres as hard template and 1,3,5-triethynylbenzene as the building blocks through a Glaser coupling reaction...
September 29, 2016: Chemistry, An Asian Journal
Manuel Kussmann, Linda Schuster, Sarah Wrenger, Petra Pichler, Gottfried Reznicek, Heinz Burgmann, Wolfgang Poeppl, Markus Zeitlinger, Martin Wiesholzer
♦ Background: Peritonitis is a major problem among patients on peritoneal dialysis (PD). The influence of diverse PD fluids on the activity of frequently used antibiotics has been insufficiently investigated. Thus, the present study set out to investigate the impact of different PD fluids on the activity of cefepime, ciprofloxacin, ertapenem, meropenem, and tobramycin against Escherichia coli. ♦ Methods: Time-kill curves in 4 different PD fluids (Dianeal PDG4, Extraneal, Nutrineal PD4 and Physioneal 40, all Baxter Healthcare Corp...
September 28, 2016: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
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