bluuebunny/crossref_metadata_2025_split huggingface dataset:
Acquisition of Antigen-Presenting Functions by Neutrophils Isolated from Mice with Chronic Colitis
Authors: Ostanin Dmitry V. , Kurmaeva Elvira , Furr Katie , Bao Richard , Hoffman Jason , Berney Seth , Grisham Matthew B. 
Published: January 2012

Abstract
Active episodes of the inflammatory bowel diseases are associated with the infiltration of large numbers of myeloid cells including neutrophils, monocytes, and macrophages. The objective of this study was to systematically characterize and define the different populations of myeloid cells generated in a mouse model of chronic gut inflammation. Using the T cell transfer model of chronic colitis, we found that induction of disease was associated with enhanced production of myelopoietic cytokines (IL-17 and G-CSF), increased production of neutrophils and monocytes, and infiltration of large numbers of myeloid cells into the mesenteric lymph nodes (MLNs) and colon. Detailed characterization of these myeloid cells revealed three major populations including Mac-1+Ly6ChighGr-1low/neg cells (monocytes), Mac-1+Ly6CintGr-1+ cells (neutrophils), and Mac-1+Ly6Clow/negGr-1low/neg leukocytes (macrophages, dendritic cells, and eosinophils). In addition, we observed enhanced surface expression of MHC class II and CD86 on neutrophils isolated from the inflamed colon when compared with neutrophils obtained from the blood, the MLNs, and the spleen of colitic mice. Furthermore, we found that colonic neutrophils had acquired APC function that enabled these granulocytes to induce proliferation of OVA-specific CD4+ T cells in an Ag- and MHC class II-dependent manner. Finally, we observed a synergistic increase in proinflammatory cytokine and chemokine production following coculture of T cells with neutrophils in vitro. Taken together, our data suggest that extravasated neutrophils acquire APC function within the inflamed bowel where they may perpetuate chronic gut inflammation by inducing T cell activation and proliferation as well as by enhancing production of proinflammatory mediators.
Prevalence of Chewing Side Preference in the Deciduous, Mixed and Permanent Dentitions
Authors: Barcellos Daphne Câmara , Borges Alessandra Buhler , Pucci Cesar Rogério , Torres Carlos Rocha Gomes , de Paiva Gonçalves Sergio Eduardo , da Silva Melissa Aline , Batista Graziela Ribeiro , Pleffken Patricia Rondon 
Published: January 2012

ABSTRACT

Aim
This study evaluated the prevalence of the chewing side preference (CSP) in the deciduous, mixed and permanent dentitions.

Materials and methods
Three-hundred subjects were divided in three groups (n = 100): Group 1 – children with deciduous dentition; group 2—children with mixed dentition; group 3 – subjects with permanent dentition. The CSP was determined using a direct method (visual observation) developed by McDonnell et al. (2004). Descriptive statistic was used to observe the prevalence of CSP. The Pearson's Chi-square was used to investigate signicant associations between gender, presence of CSP and preferred side (right/left).

Results and conclusion
Eighty-seven percent of group 1 had a CSP. Eighty-two percent of group 2 had a CSP. Seventy-six percent of group 3 had a CSP. There was no statistically significant association between presence of CSP and gender in all groups. There was no statistically significant association between preferred side (right/left) and gender in all groups.

Clinical significance
There is a higher prevalence of subjects in deciduous, mixed and permanent dentition that presented chewing side preference. The early diagnosis of the presence of chewing side preference can prevent the unilateral chewing pattern with prophylactic therapy applied to the first teeth (deciduous).

How to cite this article
Barcellos DC, de Paiva Gonçalves SE, da Silva MA, Batista GR, Pleffken PR, Pucci CR, Borges AB, Torres CRG. Prevalence of Chewing Side Preference in the Deciduous, Mixed and Permanent Dentitions. J Contemp Dent Pract 2011; 12(5):339-342.
Prosthetic Rehabilitation of a Maxillofacial Defect in a Chondrosarcoma Patient
Authors: Katyayan Preeti Agarwal , Katyayan Manish , Kalavathy N 
Published: January 2012

ABSTRACT
Chondrosarcoma is a malignant tumor in which the tumor cells produce cartilage but not bone. The recommended management is wide local or radical excision, followed by surgical and prosthetic reconstruction. This article explains postsurgical prosthetic rehabilitation of a chondrosarcoma patient by means of intraoral acrylic, and extraoral silicone prosthesis for restoration of normal orofacial function and appearance.

How to cite this article
Katyayan PA, Katyayan M, Kalavathy N. Prosthetic Rehabilitation of a Maxillofacial Defect in a Chondrosarcoma Patient. J Contemp Dent Pract 2011;12(5): 398-403.
Microbial Natural Products: Chemical Diversity
Authors: Sanchez Sergio , Guzmán‐Trampe Silvia , Ávalos Mariana , Ruiz Beatriz , Rodríguez‐Sanoja Romina , Jiménez‐Estrada Manuel 
Published: January 2012

AbstractMicroorganisms produce numerous natural products that, although they may not participate directly in their growth and development, do play an important role in the organism's ecological interactions with other organisms (secondary metabolites). Many of these products have therapeutic and agricultural applications and have been crucial to the health and well‐being of humans. Approximately one third of the top‐selling drugs in the world that are recognized in the pharmaceutical industry as having broad structural diversity and a wide range of pharmacological activity are natural products or their derivatives. The structural diversity of these products makes them valuable as novel lead compounds against newly discovered therapeutic targets. Similar biological effects are often displayed by different chemical species. Likely, many undiscovered microbes exist that are capable of producing natural compounds exhibiting biological activities with potential commercial application. Here, we discuss several important microbial natural products, with a special emphasis on their chemical diversity.
Synthesis and Properties of Konjac Glucomannan‐graft‐poly(acrylic acid‐co‐trimethylallyl ammonium chloride) as a Novel Polyampholytic Superabsorbent
Authors: Tian Da‐Ting , Li Shi‐Rong , Liu Xin‐Ping , Wang Jing‐Shou , Liu Cheng‐Mei 
Published: January 2012

AbstractA novel polyampholyte superabsorbent, konjac glucomannan‐graft‐poly(acrylic acid‐co‐trimethylallyl ammonium chloride), was prepared by the free‐radical grafting solution polymerization of acrylic acid (AA) and trimethylallyl ammonium chloride (TMAAC) monomers onto konjac glucomannan (KGM), an important polysaccharide, in the presence of N, N′‐methylenebisacrylamide as a cross‐linker with potassium persulfate as an initiator. The structure of the graft copolymers was confirmed with Fourier transform infrared spectroscopy. The effect of reaction variables, including the amount of cross‐linking agent and initiator, the weight ratio of both (AA + TMAAC) to KGM and AA to (AA + TMAAC), neutralization degree of AA, bath temperature, as well as reaction time, on the water absorbency of the superabsorbent polymer was investigated. The maximum water absorbency of the optimized product was 550 g/g for distilled water and 60 g/g at a 0.9 wt% aqueous NaCl solution. Moreover, the effect of the pH of the solution on the water absorbency of the copolymers was studied. The results showed that water absorbency was maximum at the acidic and alkaline conditions. The water absorbency at the isoelectric point was relatively low. These results suggest that KGM‐g‐(PAA‐co‐PTMAAC) hydrogels showed unique pH‐dependent swelling properties in contrast to those of conventional acrylic acid based superabsorbents. © 2011 Wiley Periodicals, Inc. Adv Polym Techn 32: E131–E140, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/adv.20277
Preparation, characterization, and antibacterial activities of para‐biguanidinyl benzoyl chitosan hydrochloride
Authors: Zhao‐Sheng Cai , Yue‐Ming Sun , Chun‐Sheng Yang , Xue‐Mei Zhu 
Published: January 2012

AbstractPara‐biguanidinyl benzoyl chitosan hydrochloride (p‐BGBC) is prepared with chitosan (CTS) and para‐biguanidinyl benzoyl chloride, which is synthesized by acidchloride reaction of para‐biguanidinyl benzonic acid hydrochloride (p‐BGBA), as starting material in the medium consisted of MeSO3H and dimethyl sulfoxide (DMSO). Structure of p‐BGBC is characterized by FT‐IR, 1H NMR and gel permeation chromatography (GPC), and its antimicrobial activities are evaluated against a Gram‐negative bacterium Escherichia coli (E. coli) and a Gram‐positive bacterium Staphylococcus aureus (S. aureus). Compared with CTS hydrochloride, p‐BGBC has much stronger antimicrobial activities, which increase with the increase of its degree of substitution (DS) of guanidinylation. When the DS of p‐BGBC achieves or exceeds 36.8%, its antibacterial activities against the tested bacteria are higher than that of Bromo‐Geramium. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
The effects of temperature, radiation, and illumination on current–voltage characteristics of Au/PVA(Co, Zn‐doped)/n‐Si Schottky diodes
Authors: Dökme İlbilge , Altindal Şemsettin , Uslu İbrahim 
Published: January 2012

AbstractPolyvinyl alcohol (PVA)/(Co‐Ni) nanofiber film was fabricated on silicon wafer using electrospinning technique. The topography of the produced PVA/(Co‐Ni) nanofiber film was examined by scanning electron microscopy (SEM). The Au/Poly (vinyl alcohol) (Co, Ni‐doped)/n‐Si Schottky diode (SD) was thermally formed in evaporating system after the spinning process. At first, the current–voltage (I–V) characteristics of Au/PVA (Co, Zn‐doped)/n‐Si SD was measured at the room temperature (300 K). For the investigating the effect of temperature, illumination and radiation on Au/PVA (Co, Zn‐doped)/n‐Si SD comparatively, the measurement was performed under the illumination intensity of 200 W, at 380K, and finally the radiation dose of 22 kGy respectively. The diode characteristics such as the zero‐bias barrier height (ϕBo), ideality factor (n) and series resistance (Rs) were calculated at room temperature and under the condition of high temperature, illumination, and radiation. It was found that these characteristics were affected by the illumination and radiation as well as the temperature. The density of interface states (Nss) distribution profiles as a function of (Ec ‐ Ess) extracted from the forward I–V measurements were also affected by illumination and radiation even if just a bit. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
TiCl4 immobilized on a composite support SiO2/MgCl2·x(1,4‐butanediol)/poly[styrene‐co‐(acrylic acid)] for ethylene polymerization: The barrier effect of poly[styrene‐co‐(acrylic acid)]
Authors: Jiang Binbo , Du Lijun , Wang Fang , Ye Jian , Wang Jingdai , Yang Yongrong 
Published: January 2012

AbstractBy immobilizing titanium‐based Ziegler–Natta catalyst on composite support, SiO2/MgCl2·x(1,4‐butanediol)/poly[styrene‐co‐(acrylic acid)] (SiO2/MgCl2·xBD/PSA) and SiO2/MgCl2·xBD/PSA/TiCl4 (SMPT) were synthesized for ethylene polymerization. SiO2/MgCl2·xBD/TiCl4 without PSA was also prepared for comparison. The results of energy‐dispersive X‐ray analysis, SEM, and thermogravimetric analysis demonstrated that SMPT had a unique core‐mantle‐shell structure. The PSA layer can be considered as a barrier for the mass‐transfer of reactants based on the results of self‐diffusion measurement by pulsed field gradient NMR and ethylene polymerization. The polyethylene produced by SMPT showed high molecular weight (MW) and broad molecular weight distribution (MWD). The influences of PSA content, hydrogen, and comonomer on the ethylene polymerization behavior were also investigated. The results further demonstrated that the PSA layer in the composite support had different diffusion capabilities to the reactants. The physical properties of the produced polyethylene implied the possibility to control the MW and MWD of polyethylene by the manipulation of PSA layer. The catalyst fragmentation during ethylene polymerization was also affected by the PSA shell due to its barrier effect. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
A New Concept for Glycosyltransferase Inhibitors: Nonionic Mimics of the Nucleotide Donor of the Human Blood Group B Galactosyltransferase
Authors: Schaefer Katrin , Albers Joachim , Sindhuwinata Nora , Peters Thomas , Meyer Bernd 
Published: January 2012

AbstractGlycosyltransferases play an important role in the formation of oligosaccharides and glycoconjugates. To find suitable and selective inhibitors for this class of enzymes is still challenging. Here, we describe a novel concept that allows the design of inhibitors based on the structure of the donor substrate binding pocket. As a first step we describe the design, synthesis and analysis of inhibitors of the human blood group B galactosyltransferase (GTB). This enzyme served as a model system to study the concept, which can be used for easy access of glycosyltransferase inhibitors in general. In silico docking of bicyclic heteroaromatic ligands to GTB and experimental verification of binding affinities by saturation transfer difference NMR (STD NMR) spectroscopy gave 9‐N‐pentityl uric acid derivatives as non‐ionic mimics of UDP. Two derivatives were synthesized and showed inhibitory activity for GTB as determined by competitive STD NMR experiments and by a radiolabeled enzyme assay.
Application of Central Composite Rotatable Design for Mixing Time Analysis in Mechanically Agitated Vessels
Authors: Fakheri F. , Moghaddas J. , Zadghaffari R. , Moghaddas Y. 
Published: January 2012

AbstractCentral composite rotatable design (CCRD) was applied for analyzing and optimizing the effects of impeller rotational speed, gas flow rate, probe location, and tracer injection point on the gas‐liquid two‐phase mixing time in an agitated vessel with a dual six‐blade Rushton turbine. Knowledge of the effects of independent factors on the mixing time is necessary in order to optimize the mixing process. The mathematical relationship between mixing time and four significant independent variables can be approximated by a nonlinear polynomial model. The obtained results demonstrate that CCRD could efficiently be applied for modeling mixing time. It requires fewer experimental runs and provides sufficient information as compared to a factorial design.
Formation of Melamium Adducts by Pyrolysis of Thiourea or Melamine/NH4Cl Mixtures
Authors: Braml Nicole E. , Sattler Andreas , Schnick Wolfgang 
Published: January 2012

AbstractPyrolysis of prominent precursor compounds for the synthesis of carbon nitride type materials (e.g., melamine, thiourea) have been studied in detail. Molecular adducts containing monoprotonated melamium C6N11H10+ and melaminium HC3N3(NH2)3+ ions, respectively, have been identified as intermediates. The adduct C6N11H10Cl⋅0.5NH4Cl was obtained by the reaction of melamine C3N3(NH2)3 with NH4Cl at 450 °C. During the pyrolysis of thiourea, guanidinium thiocyanate was initially formed and subsequently the melamium thiocyanate melamine adduct C6N11H10SCN⋅2C3N3(NH2)3 was isolated at 300 °C. A second melaminium thiocyanate melamine adduct with the formula HC3N3(NH2)3SCN⋅2C3N3(NH2)3 represents an intermediary reaction product that is best accessible at low pressures. The crystal structures of the compounds were solved by single‐crystal XRD. Unequivocal proton localization at the C6N11H10+ ion was established. A typical intramolecular and interannular hydrogen bridge and other characteristic hydrogen‐bonding motifs were identified. Additionally, the adducts were investigated by solid‐state NMR spectroscopy. Our study provides detailed insight into the thermal condensation of thiourea by identifying and characterizing key intermediates involved in the condensation process leading to carbon nitride type materials. Furthermore, factors promoting the formation of melamium adduct phases over melem are discussed.
Synthesis and Photophysical Properties of Self‐Assembled Metallogels of Platinum(II) Acetylide Complexes with Elaborate Long‐Chain Pyridine‐2,6‐Dicarboxamides
Authors: Chang Kai‐Chi , Lin Ju‐Ling , Shen Yuan‐Ting , Hung Chen‐Yen , Chen Chan‐Yu , Sun Shih‐Sheng 
Published: January 2012

AbstractA series of platinum(II) acetylide complexes with elaborate long‐chain pyridine‐2,6‐dicarboxamides was synthesized. These metal complexes are capable of immobilizing organic solvents to form luminescent metallogels through a combination of intermolecular hydrogen bonding, aromatic π–π, and van der Waals interactions. Fibrillar morphologies were identified by TEM for these metallogels. Unique photophysical properties associated with the sol‐to‐gel transition have been disclosed with luminescence enhancement at elevated temperatures, which is in sharp contrast to typical thermotropic organogels or metallogels reported in the literature. Such unusual luminescence enhancement is attributed to the increased degree of freedom at higher temperatures that results in the formation of favorable molecular aggregates in the excited state through enhanced aromatic π–π and metallophilic PtII⋅⋅⋅PtII interactions. Structurally similar Pt‐bp3 is not able to gel any common organic solvents. The inability of Pt‐bp3 to form gels illustrates the importance of gelation to the macroscopic photophysical properties; Pt‐bp3 does not show emission enhancement at elevated temperatures due to its low tendency to form strong aggregates in the ground state.
ChemInform Abstract: A Tetragonal Form of Dysprosium Orthomolybdate at Room Temperature.
Authors: Dorzhieva Sesegma , Chumak Ihor , Sarapulova Angelina Sarapulova Angelina , Mikhailova Daria , Bazarova Jibzema , Ehrenberg Helmut 
Published: January 2012

AbstractSingle crystals of Dy2(MoO4)3 with the high‐temperature β‐form are prepared from a mixture of Dy2O3, ZrO2, and MoO3 in evacuated sealed silica tubes at 1273 K.
ChemInform Abstract: Preparation, Crystal Structure and Photoluminescence of Lithium Magnesium Manganese Borate Solid Solutions, LiMg1‐xMnxBO3.
Authors: Yamane Hisanori , Kawano Tetsuya , Fukuda Kentaro , Suehiro Takayuki , Sato Tsugio 
Published: January 2012

AbstractThe title compounds are prepared by solid state reaction of Li2CO3, MgO, MnO, and H3BO3 (Ar, 800 °C, 12 h).
ChemInform Abstract: Solid State Synthesis of Calcium Borohydroxyapatite.
Authors: Gueler H. , Guendogmaz G. , Kurtulus F. , Celik G. , Gacanoglu S. S. 
Published: January 2012

AbstractCalcium borohydroxyapatite is obtained using colemanite as a primary source of both calcium and boron.
ChemInform Abstract: Nanoporous Titanium Borophosphates with Rigid Gainesite‐Type Framework Structure.
Authors: Kniep Ruediger , et al. et al. 
Published: January 2012

AbstractNanoporous titanium borophosphates M{TiIV2 [B(PO4)4]}·xH2O (M: Li, Na, K, Rb, Cs, NH4, H3O; 0 ≤ x ≤ 1) are hydrothermally synthesized by reaction of Ti in HCl solution with boric acid and the respective alkali metal phosphate (autoclave, 453 K, 3 d).
ChemInform Abstract: Synthesis, Crystal Structure and Optical Properties of the New Lead Fluoride Borate — Pb2BO3F.
Authors: Zhao Wenwu , Pan Shilie , Han Jian , Yao Jiyong , Yang Yun , Li Junjie , Zhang Min , Zhang Lian Han , Hang Yin 
Published: January 2012

AbstractSingle crystals of the new title compound are prepared by melting a mixture of PbO, PbF2, and H3BO3 in the molar ratio 3:2:2 (Pt crucible, 15 h, controlled cooling).
ChemInform Abstract: Carbon—Carbon Bond Formation Between Secondary Alcohols and Aldehydes under Ruthenium‐Catalyzed Redox Shuttle.
Authors: Cho Chan Sik , Kim Bok Tae , Yoon Nam Sik 
Published: January 2012

AbstractSecondary alcohols react with various (hetero)aromatic aldehydes in the presence of a ruthenium catalyst along with KOH to give coupled ketones or coupled secondary alcohols according to reaction conditions.
ChemInform Abstract: Application of Chloroaluminate Ionic Liquid as Catalyst and Medium for the Dealkylation of Esters.
Authors: Wei Ben‐Mei , Zhang Zhi‐Yong , Dai Zhi‐Qun , Zhang Kai‐Cheng 
Published: January 2012

AbstractThe ionic liquid Py·HBr/AlCl3, the best among four chloroaluminate ionic liquids testet, can be reused six times without any loss of its activity.
ChemInform Abstract: Facile and Effective Synthesis of Spirocycloalkanones.
Authors: Zoidis Grigoris , Kolocouris Nicolas 
Published: January 2012

AbstractA facile and experimentally convenient protocol for the construction of spirocarbocyclic adamantane derivatives (VIII) is developed involving intramolecular Thorpe—Ziegler cyclization of dinitriles (VI) as the key step.
ChemInform Abstract: Asymmetric Synthesis of Diverse α,α‐Diarylmethylamines via Aryl Grignard Additions to Chiral N‐2,4,6‐Triisopropylbenzenesulfinylimines.
Authors: Han Zhengxu , Busch Robert , Fandrick Keith R. , Meyer Angelica , Xu Yibo , Krishnamurthy Dhileep K. , Senanayake Chris H. 
Published: January 2012

AbstractWith the use of the sterically hindered auxiliary, the reactions conducted at room temperature proceed with higher conversions, reaction rates, and stereoselectivities compared to those at ‐40 °C.
ChemInform Abstract: Regio‐ and Enantioselective Pd‐Catalyzed Allylic Amination of Monosubstituted Allylic Substrates with BocNHOMe.
Authors: Zheng Bao‐Hui , Ding Chang‐Hua , Hou Xue‐Long 
Published: January 2012

AbstractIn the presence of SCP, hydroxylamine (II) is developed as novel N‐nucleophile to produce the desired amines (III) and (IX).
ChemInform Abstract: CuI‐Catalyzed Hydroxylation of Aryl Bromides under the Assistance of 5‐Bromo‐2‐(1H‐imidazol‐2‐yl)pyridine and Related Ligands.
Authors: Jia Jianhuan , Jiang Chengling , Zhang Xiaojing , Jiang Yongwen , Ma Dawei 
Published: January 2012

AbstractAfter screening different types of imidazole derivatives, BIP is found to be an effective ligand for the title reaction.
ChemInform Abstract: Proline‐Based Dipeptides as Efficient Organocatalysts for Asymmetric Aldol Reactions in Brine.
Authors: Tian Hua , Gao Jun‐Long , Xu Hao , Zheng Liang‐Yu , Huang Wen‐Bo , Liu Qing‐Wen , Zhang Suo‐Qin 
Published: January 2012

AbstractSimple N‐proline‐based dipeptides (I) in combination with 2,4‐dinitrophenol produce the aldol products in high yields and with high diastereo‐ and enantioselectivities.
ChemInform Abstract: Gold(III)‐Catalyzed Direct Acetoxylation of Arenes with Iodobenzene Diacetate.
Authors: Qiu Di , Zheng Zhitong , Mo Fanyang , Xiao Qing , Tian Yu , Zhang Yan , Wang Jianbo 
Published: January 2012

AbstractThe reaction requires an excess of aromatic substrate to avoid an over‐acetoxylation.
ChemInform Abstract: Iodine‐Mediated Neighboring Group Assisted Synthesis of Unsymmetrical 1,2‐Diketone/Benzil Derivatives from o‐(Alkynyl)benzamides.
Authors: Majumdar K. C. , Ansary Inul , De Rajendra Narayan , Roy B. 
Published: January 2012

Abstractoptimized conditions render possible the preparation of various diones as structural motifs.
ChemInform Abstract: Highly Efficient Amide Synthesis from Alcohols and Amines by Virtue of a Water‐Soluble Gold/DNA Catalyst.
Authors: Wang Ye , Zhu Dapeng , Tang Lin , Wang Sujing , Wang Zhiyong 
Published: January 2012

AbstractThe direct synthesis of amides from alcohols and amines is achieved using gold nanoparticles immobilized on DNA as a heterogeneous catalyst.
ChemInform Abstract: Base‐Promoted Reaction of Methyl 4,6‐O‐Benzylidene‐3‐deoxy‐hexopyranosid‐2‐ulose and Various Arylamines.
Authors: Sun Jun , Zhang Xuefeng , Li Fulong , Ding Chunyong , Wu Wenjuan , Zhang Ao 
Published: January 2012

AbstractTreatment of the ulose derivative (I) with p‐anisidine in NaOH/CHCl3 does not produce the expected cyclic amino acid structure but enaminoketone (IIIa).
ChemInform Abstract: Facile One‐Pot Synthesis of Inden‐1‐ol Derivatives.
Authors: Nagarajan Subbiah , Muthuvel Paneerselvam , Das Thangamuthu Mohan 
Published: January 2012

AbstractA new methodology for the synthesis of title structures bearing different substituents at the 2‐position is based on the condensation of phthaldialdehyde with methyl ketones.