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https://www.readbyqxmd.com/read/28088690/electrochemical-studies-of-dna-interaction-and-antimicrobial-activities-of-mn-ii-fe-iii-co-ii-and-ni-ii-schiff-base-tetraazamacrocyclic-complexes
#1
Anuj Kumar, Vinod Kumar Vashistha, Prashant Tevatia, Randhir Singh
Tetraazamacrocyclic complexes of Mn(II), Fe(III), Co(II) and Ni(II) have been synthesized by template method. These tetraazamacrocycles have been analyzed with various techniques like molar conductance, IR, UV-vis, mass spectral and cyclic voltammetric studies. On the basis of all these studies, octahedral geometry has been assigned to these tetraazamacrocyclic complexes. The DNA binding properties of these macrocyclic complexes have been investigated by electronic absorption spectra, fluorescence spectra, cyclic voltammetric and differential pulse voltammetric studies...
January 6, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28088562/the-effect-of-high-temperature-sol-gel-polymerization-parameters-on-the-microstructure-and-properties-of-hydrophobic-phenol-formaldehyde-silica-hybrid-aerogels
#2
Mohamad Mehdi Seraji, Ghasem Sameri, Jamal Davarpanah, Ahmad Reza Bahramian
Phenol-formaldehyde/silica hybrid aerogels with different degree of hydrophobicity were successfully synthesized via high temperature sol-gel polymerization. Tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) were used as precursor and co-precursor of the hydrophobic silica-based phase, respectively. The hydrolysis step of silica based sols were conducted by acid catalyzed reactions and HCl was used as hydrolysis catalyst. The chemical structure of prepared hybrid aerogels was characterized by Fourier Transform Infrared spectroscopy (FT-IR)...
January 6, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28088459/strain-development-in-bulk-filled-cavities-of-different-depths-characterized-using-a-non-destructive-acoustic-emission-approach
#3
Annelies Van Ende, Diogo Pedrollo Lise, Jan De Munck, Johan Vanhulst, Martine Wevers, Bart Van Meerbeek
OBJECTIVES: (1) To evaluate the effect of cavity depth and composite type on the interfacial debonding in bulk-filled cavities. (2) To correlate the theoretical shrinkage stress and the level of interfacial debonding determined by acoustic emission (AE). METHODS: 80 sound molars were divided in two groups to receive a Class-I cavity (3.5×3.5mm) with 2.5- or 4.0-mm depth. The cavities were restored with either a conventional paste-like (Filtek Z100, 3M ESPE), a conventional flowable (G-ænial Universal Flo, GC), a bulk-fill paste-like (Tetric EvoCeram Bulk Fill, Ivoclar Vivadent) or a bulk-fill flowable (SDR, Dentsply) composite (n=10)...
January 11, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28088448/fast-formation-of-low-defect-density-tethered-bilayers-by-fusion-of-multilamellar-vesicles
#4
Tadas Ragaliauskas, Mindaugas Mickevicius, Bozena Rakovska, Tadas Penkauskas, David J Vanderah, Frank Heinrich, Gintaras Valincius
A facile and reproducible preparation of surface-supported lipid bilayers is essential for fundamental membrane research and biotechnological applications. We demonstrate that multilamellar vesicles fuse to molecular-anchor-grafted surfaces yielding low-defect-density, tethered bilayer membranes. Continuous bilayers are formed within 10min, while the electrically insulating bilayers with <0.1μm(-2) defect density can be accomplished within 60min. Surface plasmon resonance spectroscopy indicates that an amount of lipid material transferred from vesicles to a surface is inversely proportional to the density of an anchor, while the total amount of lipid that includes tethered and transferred lipid remains constant within 5% standard error...
January 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28088395/lactate-and-lactate-pyruvate-ratio-in-the-diagnosis-and-outcomes-of-pediatric-acute-liver-failure
#5
Amy G Feldman, Ronald J Sokol, Regina M Hardison, Estella M Alonso, Robert H Squires, Michael R Narkewicz
OBJECTIVES: To assess the accuracy of blood lactate and lactate: pyruvate molar ratio (L:P) as a screen for mitochondrial, respiratory chain, or fatty acid oxidation disorders in children with pediatric acute liver failure (PALF); to determine whether serum lactate ≥ 2.5 mmol/L or L:P  ≥ 25 correlated with biochemical variables of clinical severity; and to determine whether lactate or L:P is associated with clinical outcome at 21 days. STUDY DESIGN: Retrospective review of demographic, clinical, laboratory, and outcome data for PALF study group participants who had lactate and pyruvate levels collected on the same day...
January 12, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28087893/brompheniramine-as-a-novel-probe-for-indirect-uv-detection-and-its-application-for-the-capillary-electrophoresis-of-adamantane-drugs
#6
Pornpan Prapatpong, Brompoj Prutthiwanasan, Nantana Nuchtavorn, Sawanya Buranaphalin, Leena Suntornsuk
Brompheniramine, an antihistamine drug, was employed as a novel UV probe for capillary electrophoresis with indirect UV detection of adamantane drugs (memantine, amantadine, and rimantadine). The probe possesses high molar absorptivity of 24 × 10(3) L/mol cm at 6 mM, which enables the measurement of these non-chromophore analytes without derivatization. The simple background electrolyte (10 mM sodium dihydrogen phosphate (pH 5.0) containing 5 mM brompheniramine and 6 mM β-cyclodextrin) provided the separation of the analytes in a short time (7...
January 14, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28087282/short-term-perioperative-teriparatide-therapy-for-the-prevention-of-medication-related-osteonecrosis-of-the-jaw-a-randomized-controlled-preclinical-study-in-rats
#7
Mohammad Zandi, Arash Dehghan, Amirhossein Mohammadi-Mofrad, Payam Amini, Farshid Vahdatinia
OBJECTIVE: Dentoalveolar procedures in patients receiving bisphosphonates and other antiresorptive agents are associated with an increased risk of medication-related osteonecrosis of the jaw (MRONJ). The aim of present study was to evaluate the effects of perioperative teriparatide (TPD) therapy in prevention of MRONJ. SUBJECTS AND METHODS: Two protocols of TPD therapy were studied. For protocol A, 25 TPD-treated (AT) and 25 control (AC) rats received 5 weekly injection of 0...
December 19, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28081300/deep-caries-due-to-pre-eruptive-intracoronal-resorption-in-a-newly-erupted-primary-molar
#8
Yair Schwimmer, Rephael Zeltser, Moti Moskovitz
CASE REPORT: This report describes a rare case of a 19-month-old girl with pre-eruptive intracoronal resorption in the lower left first primary molar which had erupted a few weeks earlier and had deep caries. The treatment is described. CONCLUSION: Dentists who treat children must take into consideration the possibility of pre-eruptive lesions in the primary dentition that may cause involvement of the pulp, either before or shortly post-eruption.
January 12, 2017: International Journal of Paediatric Dentistry
https://www.readbyqxmd.com/read/28081008/elastic-properties-of-amorphous-t-0-75y0-75b14-t%C3%A2-%C3%A2-%C3%A2-%C3%A2-sc-ti-v-y-zr-nb-and-the-effect-of-o-incorporation-on-bonding-density-and-elasticity-t-%C3%A2-%C3%A2-%C3%A2-%C3%A2-ti-zr
#9
Oliver Hunold, Philipp Keuter, Pascal Bliem, Denis Music, Friederike Wittmers, Anna L Ravensburg, Daniel Primetzhofer, Jochen M Schneider
We have systematically studied the effect of transition metal valence electron concentration (VEC) of amorphous T 0.75Y0.75B14 (a-T 0.75Y0.75B14, T  =  Sc, Ti, V, Y, Zr, Nb) on the elastic properties, bonding, density and electronic structure using ab initio molecular dynamics. As the transition metal VEC is increased in both periods, the bulk modulus increases linearly with molar- and mass density. This trend can be understood by a concomitant decrease in cohesive energy. T'  =  Ti and Zr were selected to validate the predicted data experimentally...
January 12, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28080293/proximal-contact-repair-of-complex-amalgam-restorations
#10
M N Zguri, J A Casey, J P Jessup, K S Vandewalle
The carving of a complex amalgam restoration may occasionally result in light proximal contact with the adjacent tooth. The purpose of this study was to investigate the strength of complex amalgam restorations repaired with a proximal slot amalgam preparation. Extracted human third molars of similar coronal size were sectioned 1 mm apical to the height of the contour using a saw and were randomly distributed into 9 groups of 10 teeth each. One pin was placed at each line angle of the flattened dentinal tooth surface...
January 12, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28080032/heteroprotein-complex-formation-of-bovine-lactoferrin-and-pea-protein-isolate-a-multiscale-structural-analysis
#11
Eda Adal, Amin Sadeghpour, Simon D A Connell, Michael Rappolt, Esra Ibanoglu, Anwesha Sarkar
Associative electrostatic interactions between two oppositely charged globular proteins, lactoferrin (LF) and pea protein isolate (PPI), the latter being a mixture of vicilin, legumin and convicilin, was studied with a specific PPI/ LF molar ratio at room temperature. Structural aspects of the electrostatic complexes probed at different length scales were investigated as a function of pH by means of different complementary techniques, namely with dynamic light scattering, small angle X-ray scattering (SAXS), turbidity measurements and atomic force microscopy (AFM)...
January 12, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28079944/an-isolable-silicon-dicarbonate-complex-from-carbon-dioxide-activation-with-a-silylone
#12
Alexander Burchert, Shenglai Yao, Robert Müller, Caspar Schattenberg, Yun Xiong, Martin Kaupp, Matthias Driess
The first isolable molecular silicon dicarbonate complex (bis-NHC)Si(CO3 )2 2 (bis-NHC=H2 C[{NC(H)=C(H)N(Dipp)}C:]2 , Dipp=2,6-iPr2 C6 H3 ) was synthesized by facile reaction of the bis-N-heterocyclic carbene stabilized silylone (bis-NHC)Si 1, bearing a zero-valent silicon atom, with carbon dioxide. The monomeric silicon dioxide complex (bis-NHC)SiO2 3 supported by the bis-NHC ligand was proposed as a key intermediate resulting from double oxygenation of the zero-valent silicon atom in 1 by two molar equivalents of CO2 under liberation of CO; its subsequent Lewis acid-base reaction with CO2 leads to 2 which has been fully characterized including an single-crystal X-ray diffraction analysis...
January 12, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28078531/yeast-mixture-of-liquid-beer-and-cassava-pulp-with-rice-straw-for-the-growth-of-dairy-heifers
#13
Sukanya Kamphayae, Hajime Kumagai, Patima Butcha, Viroj Ritruechai, Supachai Udchachon
This study was conducted to determine the effects of mixtures of liquid brewer's yeast (LBY) and cassava pulp (CVP) with rice straw (RS) on feed intake, digestibility, rumen fermentation, and growth of dairy heifers. Sixteen Holstein crossbred heifers (13.8 ± 1.6 months old, 210 ± 23 kg body weight (BW)) were randomly allocated to four feeding treatments with four replications, which were 0:0:100 (RS), 0:70:30 (0%LBY), 20:50:30 (20%LBY), and 50:20:30 (50%LBY), respectively, for LBY/CVP/RS on a fresh matter basis...
January 11, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28076787/impdh2-is-an-intracellular-target-of-the-cyclophilin-a-and-sanglifehrin-a-complex
#14
Khian Hong Pua, Dylan T Stiles, Mathew E Sowa, Gregory L Verdine
Natural products have demonstrated utility in the clinic and can also act as probes to understand complex cellular pathways. Sanglifehrin A (SFA) is a mixed polyketide and non-ribosomal peptide synthase natural product with sub-nano-molar affinity for its receptor cyclophilin A (PPIA). It has been shown to behave in vitro as an immune suppressant. Here, we identify inosine-5'-monophosphate dehydrogenase 2 (IMPDH2) as an intracellular target of the PPIA-SFA binary complex. The formation of this ternary complex does not inhibit the enzymatic activity of IMPDH2...
January 10, 2017: Cell Reports
https://www.readbyqxmd.com/read/28076458/risk-of-developing-palatally-displaced-canines-in-patients-with-early-detectable-dental-anomalies-a-retrospective-cohort-study
#15
Daniela Gamba Garib, Melissa Lancia, Renata Mayumi Kato, Thais Marchini Oliveira, Lucimara Teixeira das Neves
Objective: To estimate the risk of PDC occurrence in children with dental anomalies identified early during mixed dentition. Material and Methods: The sample comprised 730 longitudinal orthodontic records from children (448 females and 282 males) with an initial mean age of 8.3 years (SD=1.36). The dental anomaly group (DA) included 263 records of patients with at least one dental anomaly identified in the initial or middle mixed dentition. The non-dental anomaly group (NDA) was composed of 467 records of patients with no dental anomalies...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28076457/removal-of-calcium-hydroxide-from-weine-type-ii-systems-using-photon-induced-photoacoustic-streaming-passive-ultrasonic-and-needle-irrigation-a-microcomputed-tomography-study
#16
Adam Lloyd, Geraldine Navarrete, Melissa Andreia Marchesan, David Clement
Objective: This study compared the effectiveness of Er:YAG laser-activated irrigation (PIPS), passive ultrasonic irrigation (PUI) with EndoUltra and standard needle irrigation (SNI) in the removal of calcium hydroxide [Ca(OH)2] from the mesial roots of Weine Type II mandibular molars. Material and Methods: Thirty mandibular molars were screened by µCT for the presence of mesial roots with complex intra-canal anatomy and a common apical foramen. The teeth were enlarged to a standardized 25/...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28076292/445-nm-diode-laser-assisted-debonding-of-self-ligating-ceramic-brackets
#17
Steffen Stein, Alexander Kleye, Michael Schauseil, Andreas Hellak, Heike Korbmacher-Steiner, Andreas Braun
OBJECTIVES: This study determined the influence of irradiation on aesthetic ceramic brackets with a novel 445-nm diode laser prior to debonding on the bracket failure mode. MATERIALS AND METHODS: Thirty ceramic brackets (In-Ovation® C, GAC) were standard-bonded to the oral and buccal planed and polished enamel surfaces of 15 caries-free human 3rd molars. Prior to study-blinded debonding, the brackets in the laser group were irradiated with the diode laser (SIROLaser Blue®, Sirona), while the irradiation was simulated within the conventional group...
January 11, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28075026/updating-histological-data-on-crown-initiation-and-crown-completion-ages-in-southern-africans
#18
Donald J Reid, Debbie Guatelli-Steinberg
OBJECTIVES: To update histological data on crown initiation and completion ages in southern Africans. To evaluate implications of these data for studies that: (a) rely on these data to time linear enamel hypoplasias (LEHs), or, (b) use these data for comparison to fossil hominins. MATERIALS AND METHODS: Initiation ages were calculated on 67 histological sections from southern Africans, with sample sizes ranging from one to 11 per tooth type. Crown completion ages for southern Africans were calculated in two ways...
January 11, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28074904/gd-iii-induced-supramolecular-hydrogelation-with-enhanced-magnetic-resonance-performance-for-enzyme-detection
#19
Yongquan Hua, Guojuan Pu, Caiwen Ou, Xiaoli Zhang, Ling Wang, Jiangtao Sun, Zhimou Yang, Minsheng Chen
Here we report a supramolecular hydrogel based on Gd(III)-peptide complexes with dramatically enhanced magnetic resonance (MR) performance. The hydrogelations were formed by adding Gd(III) ion to the nanofiber dispersion of self-assembling peptides naphthalene-Gly-Phe-Phe-Tyr-Gly-Arg-Gly-Asp (Nap-GFFYGRGD) or naphthalene-Gly-Phe-Phe-Tyr-Gly-Arg-Gly-Glu (Nap-GFFYGRGE). We further showed that, by adjusting the molar ratio between Gd(III) and the corresponding peptide, the mechanical property of resulting gels could be fine-tuned...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28073052/deciduous-neonatal-line-width-is-associated-with-duration-of-delivery
#20
Jaana Hurnanen, Vivian Visnapuu, Matti Sillanpää, Eliisa Löyttyniemi, Jaana Rautava
The delivery-related neonatal line (NNL) appears into the enamel of primary teeth and first permanent molars at birth and is a marker of live birth process. It varies in width and its location, is different in each deciduous tooth type, and is indicative of gestation time. It is unclear which triggers determine NNL at birth. Our objective was to investigate the effect of the duration and mode of delivery on NNL width. NNL of 129 teeth, a collection derived from a long-term, prospectively followed population cohort, was measured under light microscope...
December 21, 2016: Forensic Science International
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