bluuebunny/crossref_metadata_2025_split huggingface dataset:
“Device landing zone” calcification, assessed by MSCT, as a predictive factor for pacemaker implantation after TAVI
Authors: Latsios George , Gerckens Ulrich , Buellesfeld Lutz , Mueller Ralf , John Daniel , Yuecel Seyrani , Syring Joerg , Sauren Barthel , Grube Eberhard 
Published: March 2010

AbstractBackground: After trans‐catheter aortic valve implantation (TAVI), the need for postinterventional pacemaker (PM) implantation can occur in as many as 10–50% of cases, but it is not yet clear, how this need can be predicted. The aim of this study was to assess the possible predictive factors of post TAVI PM implantation based on Computed Tomography (CT) measured aortic valve calcification and its distribution. Methods: We prospectively analyzed 81 consecutive symptomatic patients with severe AS scheduled for TAVI using the CoreValve prosthesis (Medtronic, Minneapolis, USA). In all patients, a native and contrast‐enhanced multislice cardiac CT was performed preinterventionally, estimating calcification load of the native valve cusps and of the adjacent outflow tract (so called “device landing zone”, DLZ) by the Agatston Score (AgS). Objective, computer‐evaluated, preprocedural ECG‐analysis was performed with regards to pre‐existing conduction abnormalities. Transthoracic echocardiography was performed pre and post TAVI. Results: TAVI was successful in all cases. PM implantation was deemed necessary in altogether 32 patients, out of 67 without a PM pre‐TAVI (32/67, 47%). Various parameters were tested as predictors of post TAVI PM in a multivariate logistic regression analysis model. Female sex (P = 0,005) and depressed EF (P = 0,023) showed a significant correlation. PM implantation correlated also to the DLZ calcification, as assessed by CT (P = 0,004). This model leads to an AUC (area under the ROC—receiver operator characteristics—curve) of 0.83. Conclusion: Calcium amount in the CoreValve DLZ in combination with clinical data could predict the need for post TAVI PM implantation. © 2010 Wiley‐Liss, Inc.
A technique for hemostasis and closure after percutaneous aortic valve replacement
Authors: Badawi Ramy 
Published: March 2010

AbstractAccess closure is the key to successful retrograde percutaneous aortic valve replacement. It requires large‐bore femoral arterial access (18‐28F) which most operators manage with surgical access and closure under general anesthesia. We report a case example of how, using our center's peripheral interventional experience, we have developed a technique to achieve hemostasis percutaneously. © 2010 Wiley‐Liss, Inc.
In‐hospital and nine‐month outcomes among patients with coronary lesions involving a side branch and treated with bare metal stents
Authors: Novack Victor , Battaglia Lisa , Popma Jeffrey J. , Cutlip Donald E. 
Published: March 2010

AbstractBackground: The optimal management of coronary lesions involving side branches is not known. New devices are being developed for dedicated bifurcation stenting or improved side branch access or protection. Several of these devices are bare‐metal stent (BMS) platforms. The risk of side branch compromise and outcome after standard BMS is not known. Methods: We evaluated the frequency of side branch involvement and the rate of side branch compromise in a retrospective analysis of 1,440 patients from three pooled historical BMS clinical trials. The impact of side branch compromise on in‐hospital and nine‐month clinical outcomes was assessed. Results: Side branches >2 mm in diameter were present within the stented segment in 39% of treated lesions. Compromise of a side branch occurred in 27% of 1,440 lesions, including 22% of side branches that were not diseased prior to stenting. Compromise was associated with increased in‐hospital MI (13.5% vs. 7.6%, P = 0.001), a trend for increased nine‐month clinically driven target vessel revascularization (TVR, 17.4% vs. 13.2%, P = 0.058), and increased nine‐month target vessel failure (composite of cardiac death, target vessel MI or TVR, 29.7% vs. 20.2%, P < 0.001). Conclusion: At least moderate‐sized side branches are involved frequently in lesions enrolled in routine clinical trials. Unexpected compromise of these side branches is common and is associated with increased in‐hospital and nine‐month adverse outcomes. © 2010 Wiley‐Liss, Inc.
Visible angiographic complications predict short and long‐term outcomes in patients with post‐procedural creatine‐phosphokinase elevation
Authors: Fefer Paul , Daoulah Amin , Strauss Bradley H. , Chisholm Robert , Sparkes John D. , Segev Amit 
Published: March 2010

AbstractObjectives: To assess whether visible angiographic complication is related to outcome in patients with elevated creatine phosphokinase (CK‐MB) following percutaneous coronary intervention (PCI). Background: Elevated biomarkers following PCI are associated with increased incidence of adverse events but the absolute risk of such events is low. A more specific marker of risk is needed. Methods: Consecutive patients with elevated post‐PCI CK‐MB were divided into two groups according to presence (n = 115, 43%) or absence (n = 150, 57%) of an angiographic complication. A control group (n = 250) was randomly chosen from 2,403 patients undergoing PCI during the same period without CK‐MB elevation. Major adverse cardiac events (MACE) were assessed at 30 days and 1 year. Results: Patients with an identifiable angiographic complication and elevated postprocedural CK‐MB had significantly worse outcomes at 30 days and 1 year compared with biomarker positive patients without an identifiable complication and control patients (30 day MACE rate: 8% vs 0% vs 0.4%, respectively, p < 0.001; 1 year MACE rate: 26% vs 11% vs 11%, respectively, p = 0.002, all p‐values for angiographic complication vs no angiographic complication and for angiographic complication vs control). Biomarker positive patients without identifiable angiographic complication had an excellent short and long term outcome, which was no different from biomarker negative patients (1 year MACE rate: 11% vs 11%, p = 0.53). Conclusion: Post‐PCI patients without visible angiographic complications have an excellent short and long term outcome. These findings call into question the need for routine CK‐MB monitoring after PCI in the absence of clinical symptoms or angiographic complication. © 2010 Wiley‐Liss, Inc.
Disulfide Bond Cleavage: A Redox Reaction Without Electron Transfer
Authors: Hofbauer Florian , Frank Irmgard 
Published: March 2010

AbstractBy using Car–Parrinello molecular dynamics (CPMD) simulations we have simulated a mechanically induced redox reaction. Previous single‐molecule atomic force microscopy (AFM) experiments demonstrated that the reduction of disulfide bonds in proteins with the weak reducing agent dithiothreitol depends on a mechanical destabilization of the breaking bond. With reactive molecular dynamics simulations the single steps of the reaction mechanism can be elucidated and the motion of the electrons can be monitored. The simulations show that the redox reaction consists of the heterolytic cleavage of the SS bond followed by a sequence of proton transfers.
Structural Characterisation of the Li Argyrodites Li7PS6 and Li7PSe6 and their Solid Solutions: Quantification of Site Preferences by MAS‐NMR Spectroscopy
Authors: Kong Shiao Tong , Gün Özgül , Koch Barbara , Deiseroth Hans Jörg , Eckert Hellmut , Reiner Christof 
Published: March 2010

AbstractLi7PS6 and Li7PSe6 belong to a class of new solids that exhibit high Li+ mobility. A series of quaternary solid solutions Li7PS6−xSex (0≤x≤6) were characterised by X‐ray crystallography and magic‐angle spinning nuclear magnetic resonance (MAS‐NMR) spectroscopy. The high‐temperature (HT) modifications were studied by single‐crystal investigations (both F$\bar 4$3m, Z=4, Li7PS6: a=9.993(1) Å, Li7PSe6: a=10.475(1) Å) and show the typical argyrodite structures with strongly disordered Li atoms. HT‐Li7PS6 and HT‐Li7PSe6 transform reversibly into low‐temperature (LT) modifications with ordered Li atoms. X‐ray powder diagrams show the structures of LT‐Li7PS6 and LT‐Li7PSe6 to be closely related to orthorhombic LT‐α‐Cu7PSe6. Single crystals of the LT modifications are not available due to multiple twinning and formation of antiphase domains. The gradual substitution of S by Se shows characteristic site preferences closely connected to the functionalities of the different types of chalcogen atoms (S, Se). High‐resolution solid‐state 31P NMR is a powerful method to differentiate quantitatively between the distinct (PS4−nSen)3− local environments. Their population distribution differs significantly from a statistical scenario, revealing a pronounced preference for PS over PSe bonding. This preference, shown for the series of LT samples, can be quantified in terms of an equilibrium constant specifying the melt reaction SeP+S2−⇌SP+Se2−, prior to crystallisation. The 77Se MAS‐NMR spectra reveal that the chalcogen distributions in the second and third coordination sphere of the P atoms are essentially statistical. The number of crystallographically independent Li atoms in both LT modifications was analysed by means of 6Li{7Li} cross polarisation magic angle spinning (CPMAS).
Lanthanide‐Catalyst‐Mediated Tandem Double Intramolecular Hydroalkoxylation/Cyclization of Dialkynyl Dialcohols: Scope and Mechanism
Authors: Seo SungYong , Marks Tobin J. 
Published: March 2010

AbstractLanthanide‐organic complexes of the general type [Ln{N(SiMe3)2}3] (Ln=La, Sm, Y, Lu) serve as effective precatalysts for the rapid, exo‐selective, and highly regioselective tandem double intramolecular hydroalkoxylation/cyclization of primary and secondary dialkynyl dialcohols to yield the corresponding bi‐exocyclic enol ethers. Conversions are highly selective with products distinctly different from those generally produced by conventional transition metal or other catalysts, and the turnover frequencies with some substrates are too large to determine accurately. The rates of terminal alkynl alcohol hydroalkoxylation/cyclization are significantly more rapid than those of internal alkynyl alcohols, arguing that steric demands dominate the cyclization transition state. The hydroalkoxylation/cyclizations of internal dialkynyl dialcohols afford excellent E selectivity. The rate law for dialkynyl dialcohol hydroalkoxylation/cyclization is first‐order in [catalyst] and zero‐order in [alkynyl alcohol], as is observed for the organolanthanide‐catalyzed hydroamination/cyclization of aminoalkenes, aminoalkynes, and aminoallenes, and the intramolecular single‐step hydroalkoxylation/cyclization of alkynyl alcohols. An ROH/ROD kinetic isotope effect of 0.82(0.02) is observed for the tandem double hydroalkoxylation/cyclization. These mechanistic data implicate turnover‐limiting insertion of CC unsaturation into the LnO bond, involving a highly organized transition state, with subsequent, rapid Ln–C protonolysis.
ChemInform Abstract: Trends in the Frequencies of ν(AsOxHx‐1) [x = 2—4] in Selected As(V)‐Containing Compounds Investigated Using Quantum Chemical Calculations.
Authors: Adamescu Adrian , Gray Holly , Stewart Katherine M. E. , Hamilton I. P. , Al‐Abadleh Hind A. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ab initio Study of the Structural, Linear and Nonlinear Optical Properties of CdAl2Se4 Defect‐Chalcopyrite.
Authors: Ouahrani T. , Reshak Ali H. , Khenata R. , Amrani B. , Mebrouki M. , Otero‐de‐la‐Roza A. , Luana V. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: First‐Principle Studies of Ca—X (X: Si, Ge, Sn, Pb) Intermetallic Compounds.
Authors: Yang Zhiwen , Shi Dongmin , Wen Bin , Melnik Roderick , Yao Shan , Li Tingju 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Neutron Powder Diffraction and First‐Principles Computational Studies of CuLixMg2‐x (x ≅ 0.08), CuMg2, and Cu2Mg.
Authors: Braga M. H. , Fereira J. J. A. , Siewenie J. , Proffen Th. , Vogel S. C. , Daemen L. L. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Magnetic Properties of Quadruple Perovskites Ba4LnRu3O12 (Ln: La, Nd, Sm—Gd, Dy—Lu).
Authors: Shimoda Yuki , Doi Yoshihiro , Wakeshima Makoto , Hinatsu Yukio 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Sn‐0.4BPO4 Composite as a Promising Negative Electrode for Rechargeable Lithium Batteries.
Authors: Aboulaich Abdelmaula , Womes Manfred , Olivier‐Fourcade Josette , Willmann Patrick , Jumas Jean‐Claude 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: The Protonation of HSO3F: Preparation and Characterization of Fluorodihydroxyoxosulfonium Hexafluoroantimonate [H2SO3F]+[SbF6]‐.
Authors: Seelbinder Raphael , Goetz Nadine R. , Weber Johannes , Minkwitz Rolf , Kornath Andreas J. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: CdZn2KB2O6F, a New Fluoride Borate Crystal.
Authors: Zhang Fan , Jiao Zhi‐Wei , Shen De‐Zhong , Shen Guang‐Qiu , Wang Xiao‐Qing 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Generation of Gas‐Phase Nanosized Vanadium Oxide Clusters from a Mononuclear Precursor by Solution Nucleation and Electrospray Ionization.
Authors: Zhang Xinhao , Schwarz Helmut 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Sc2(MoO4)3 and Sc2(WO4)3: Halide Flux Growth of Single Crystals and 45Sc Solid‐State NMR.
Authors: Balamurugan Sarkarainadar , Rodewald Ute Ch. , Harmening Thomas , van Wuellen Leo van Wuellen Leo , Mohr Daniel , Eckert Hellmut , Poettgen Rainer 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Pyrolysis of a Three‐Dimensional MnII/MnIII Network to Give a Multifunctional Porous Manganese Oxide Material.
Authors: Nayak Sanjit , Malik Sharali , Indris Sylvio , Reedijk Jan , Powell Annie K. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Two New Extended Structures Built from Condensed Keggin‐Type Polyoxotungstates and Copper(II)‐Organic Units.
Authors: Du Dongying , Lan Yaqian , Wang Xinlong , Shao Kuizhan , Wang Haining , Su Zhongmin 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Asymmetric Michael Addition of Malonates to Enones Catalyzed by a Siloxy Amino Acid Lithium Salt.
Authors: Yoshida Masanori , Narita Mao , Hirama Keisuke , Hara Shoji 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Application of Walphos Ligand in the Pd(0)‐Catalyzed Asymmetric Allylic Alkylation Reaction.
Authors: Marinho Vanda R. , Burke Anthony J. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium‐Catalyzed Enantioselective Addition of Two Distinct Nucleophiles Across Alkenes Capable of Quinone Methide Formation.
Authors: Jensen Katrina H. , Pathak Tejas P. , Zhang Yang , Sigman Matthew S. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Palladium‐Catalyzed Cyclization of 1,6‐Enyne with 2‐Bromoarylaldehyde: Domino Sequence to [5‐7‐6] Tricyclic Ring Systems.
Authors: Fang Xianjie , Tong Xiaofeng 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Expedient Synthesis of 3‐Hydroxyisoquinolines and 2‐Hydroxy‐1,4‐naphthoquinones via One‐Pot Aryne Acyl‐Alkylation/Condensation.
Authors: Allan Kevin M. , Hong Boram D. , Stoltz Brian M. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Ethyl‐3,4‐diaroyl‐2‐cyanobutyrate (III): A Synthon for Novel Heterocycles.
Authors: Padmaja Adivireddy , Payani Thalari , Mahesh Konda , Padmavathi Venkatapuram 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Triple Newman‐Kwart Rearrangement at a Fully Substituted Benzene Ring.
Authors: Theil Hubert , Froehlich Rohland , Glaser Thorsten 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Photocatalytic Aerobic Epoxidation of Alkenes under Visible Light Irradiation by an Iron(III) Porphyrin with Mg—Al Hydrotalcite Anionic Clay.
Authors: Teramura Kentaro , Ogura Kentaro , Sugimoto Takashi , Tsuneoka Hideo , Shishido Tetsuya , Tanaka Tsunehiro 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Microwave‐Assisted Cadogan Reaction for the Synthesis of 2‐Aryl‐2H‐indazoles, 2‐Aryl‐1H‐benzimidazoles, 2‐Carbonylindoles, Carbazole, and Phenazine.
Authors: Cuevas Creencia Evelyn , Kosaka Masahiro , Muramatsu Toshikatsu , Kobayashi Masashi , Iizuka Tomohiro , Horaguchi Takaaki 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of O‐Ethyl Thioformate: A Useful Reagent for the Thioformylation of Amines.
Authors: Borths Christopher J. , Chan Johann , Burke Brenda J. , Larsen Robert D. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Orthogonal Cu‐ and Pd‐Based Catalyst Systems for the O‐ and N‐Arylation of Aminophenols.
Authors: Maiti Debabrata , Buchwald Stephen L. 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Microwave‐Assisted, Rapid, Solvent‐Free Aza‐Michael Reaction by Perchloric Acid Impregnated on Silica Gel.
Authors: Singh Surya Prakash , Kumar T. Vijaya , Chandrasekharam M. , Giribabu L. , Reddy P. Yella 
Published: March 2010

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.