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https://www.readbyqxmd.com/read/29352770/concentration-dependent-effect-of-bleaching-agents-on-the-immunolabeling-of-interleukin-6-interleukin-17-and-cd5-positive-cells-in-the-dental-pulp
#1
F Benetti, J E Gomes-Filho, L L Ferreira, G Sivieri-Araújo, E Ervolino, A L F Briso, L T A Cintra
AIM: To evaluate lymphocyte-like cell activation (CD5-positive cells) and the expression of interleukin (IL)-6 and IL-17 in the pulp after dental bleaching with two concentrations of hydrogen peroxide (H2 O2 ). METHODOLOGY: The right and left maxillary molars from 40 rats were treated randomly with bleaching gel with 20% H2 O2 (BLUE group, 1 application of 50 min), 35% H2 O2 (MAXX group, 3 applications of 15 min), or placebo gel (Control). After 2 and 30 days, the rats were killed (n=10), and the jaws were processed for histological and immunohistochemistry analysis of the pulp tissue...
January 20, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29352638/the-evaluation-of-the-hydrophilic-hydrophobic-interactions-and-their-effect-in-water-methanol-solutions-a-study-in-terms-of-the-thermodynamic-state-functions-in-the-frame-of-the-transition-state-theory
#2
Francesco Mallamace, Carmelo Corsaro, Sveva Longo, Sow-Hsin Chen, Domenico Mallamace
Aqueous solutions of amphiphilic molecules are characterized by the competition between hydrophilic and hydrophobic interactions. These interactions have a different energetic dependence with the temperature. Whereas hydrophilic interactions have been well characterized, a complete theory for the hydrophobic ones is still lacking as well as the comprehension of the effect that the solvent exerts on the solute and vice versa. In this paper from the measured relaxation time, we evaluated the thermodynamic state functions of water-methanol solutions in the frame of the transition state theory...
January 11, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29352193/degree-of-severity-of-molar-incisor-hypomineralization-and-its-relation-to-dental-caries
#3
A Negre-Barber, J M Montiel-Company, M Catalá-Pizarro, J M Almerich-Silla
Molar incisor hypomineralization is a developmental defect of dental enamel associated with rapid caries progression. In order to discover whether molar incisor hypomineralization predisposes to dental caries, a cross-sectional cohort study was conducted in a sample of 414 children aged between eight and nine years. It was found that 24.2% of the children presented molar incisor hypomineralization. Of these, 72% had a mild form and 28% a severe form. Caries prevalence was greater among the children with severe form (60...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351022/a-survey-of-orthodontic-treatment-in-team-care-for-patients-with-syndromic-craniosynostosis-in-japan
#4
Takafumi Susami, Toshihiko Fukawa, Haruyo Miyazaki, Teruo Sakamoto, Tadashi Morishita, Yoshiaki Sato, Yoshiaki Kinno, Kazuyuki Kurata, Keiichiro Watanabe, Toshikazu Asahito, Isao Saito
OBJECTIVE: To understand the actual condition of orthodontic treatment in team care for patients with syndromic craniosynostosis (SCS) in Japan. DESIGN: A nationwide collaborative survey. SETTING: Twenty-four orthodontic clinics in Japan. PATIENTS: A total of 246 patients with SCS. MAIN OUTCOME MEASURE: Treatment history was examined based on orthodontic records using common survey sheets. RESULTS: Most patients first visited the orthodontic clinic in the deciduous or mixed dentition phase...
January 1, 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29350530/structural-variation-and-microrheological-properties-of-a-homogeneous-polysaccharide-from-wheat-germ
#5
Liyuan Yun, Tao Wu, Rui Liu, Kun Li, Min Zhang
A novel water-soluble polysaccharide (WGP) was purified from the crude wheat germ polysaccharide by Sephacryl S-500HRgel filtration. The molecular weight of WGP was determined as 4.89×106 Da and composed of arabinose, xylose, glucose, and galactose, with a molar ratio of 29.3%:42.7%:14.7%:13.3%, respectively. WGP was subjected for structural characterization by methylation analysis and 1D/2D nuclear magnetic resonance. WGP was mainly a backbone consisting of (1→4)-linked--D-Xylp (19.01%), (1→3, 4)-linked--D-Xylp (26...
January 19, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29349741/degradation-behavior-of-triclosan-by-co-exposure-to-chlorine-dioxide-and-uv-irradiation-influencing-factors-and-toxicity-changes
#6
Qing-Song Li, Hui-Wen Cai, Guo-Xin Li, Guo-Yuan Chen, Xiao-Yan Ma, Wen-Long He
This study investigated the transformation of triclosan (TCS) following co-exposure to UV irradiation and ClO2. Special attention was given to understand the influencing of water quality parameters and toxicity changes during the co-exposure process. The results show that the co-exposure process prompted TCS elimination quickly and effectively, with more than 99% of TCS degraded under the experimental conditions. The molar yield ratios of 2,4-dichlorophenol/TCS (2,4-DCP/TCS) were calculated to be 35.81-74.49%; however, the by-product of 2,8-dichlorodibenzop-dioxin (2,8-Cl2DD) was not detected...
January 18, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29349668/serum-mmp-9-diagnostics-prognostics-and-activation-in-acute-coronary-syndrome-and-its-recurrence
#7
Laura Lahdentausta, Jaakko Leskelä, Alina Winkelmann, Taina Tervahartiala, Timo Sorsa, Erkki Pesonen, Pirkko J Pussinen
Matrix metalloproteinase (MMP)-9 is crucial in atherosclerotic plaque rupture and tissue remodeling after a cardiac event. The balance between MMP-9 and endogenous inhibitor, tissue inhibitors of matrix metalloproteinase 1 (TIMP-1), is important in acute coronary syndrome (ACS). This is an age- and gender-matched case-control study of ACS (N = 669). Patients (45.7%) were resampled after recovery, and all were followed up for 6 years. The molecular forms of MMP-9 were investigated by gelatin zymography...
January 18, 2018: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/29349469/dopant-dependent-crystallization-and-photothermal-effect-of-sb-doped-sno2-nanoparticles-as-stable-theranostic-nanoagents-for-tumor-ablation
#8
Nuo Yu, Chen Peng, Zhaojie Wang, Zixiao Liu, Bo Zhu, Zhigao Yi, Meifang Zhu, Xiaogang Liu, Zhigang Chen
Ideal theranostic nanoagents should be "all-in-one" type nanocrystals that have a single-semiconductor component and all-required properties (such as imaging and photothermal effects), but most semiconductor nanocrystals do not have these required properties. With SnO2 as a model of a typical wide-band semiconductor, we report the tuning from UV-responsive SnO2 to blue SnO2 nanocrystals with imaging ability and a Sb-doping-dependent photothermal effect. Sb-Doped SnO2 nanocrystals were prepared by heating SbCl3 and SnCl4 in benzyl alcohol solution through a facile solvothermal route...
January 19, 2018: Nanoscale
https://www.readbyqxmd.com/read/29349467/lysine-derived-ph-sensitive-and-biodegradable-poly-beta-aminoester-urethane-networks-and-their-local-drug-delivery-behaviour
#9
Yasemin Tamer, Biqiong Chen
In this study, a series of covalently crosslinked, l-lysine based poly(beta-aminoester urethane) (LPBAEU) networks with good biodegradability and pH sensitivity was reported. The effect of hydrophilic/hydrophobic characteristics and diacrylate/amine molar ratio on the structure, swelling and degradation behaviour of the networks was investigated. The water transport mechanism and dynamic swelling behavior of the LPBAEU networks were strongly affected by medium pH, and swelling amounts up to 252.2% and 148.7% were observed at pH 5...
January 19, 2018: Soft Matter
https://www.readbyqxmd.com/read/29348590/the-theoretical-molecular-weight-of-nayf-4-re-upconversion-nanoparticles
#10
Lewis E Mackenzie, Jack A Goode, Alexandre Vakurov, Padmaja P Nampi, Sikha Saha, Gin Jose, Paul A Millner
Upconversion nanoparticles (UCNPs) are utilized extensively for biomedical imaging, sensing, and therapeutic applications, yet the molecular weight of UCNPs has not previously been reported. Herein, we present a theory based upon the crystal structure of UCNPs to estimate the molecular weight of UCNPs: enabling insight into UCNP molecular weight for the first time. We estimate the theoretical molecular weight of various UCNPs reported in the literature, predicting that spherical NaYF4 UCNPs ~ 10 nm in diameter will be ~1 MDa (i...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348199/origins-of-low-symmetry-phases-in-asymmetric-diblock-copolymer-melts
#11
Kyungtae Kim, Akash Arora, Ronald M Lewis, Meijiao Liu, Weihua Li, An-Chang Shi, Kevin D Dorfman, Frank S Bates
Cooling disordered compositionally asymmetric diblock copolymers leads to the formation of nearly spherical particles, each containing hundreds of molecules, which crystallize upon cooling below the order-disorder transition temperature (TODT). Self-consistent field theory (SCFT) reveals that dispersity in the block degrees of polymerization stabilizes various Frank-Kasper phases, including the C14 and C15 Laves phases, which have been accessed experimentally in low-molar-mass poly(isoprene)-b-poly(lactide) (PI-PLA) diblock copolymers using thermal processing strategies...
January 18, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29347489/entropy-of-level-cut-random-gaussian-structures-at-different-volume-fractions
#12
Stjepan Marčelja
Cutting random Gaussian fields at a given level can create a variety of morphologically different two- or several-phase structures that have often been used to describe physical systems. The entropy of such structures depends on the covariance function of the generating Gaussian random field, which in turn depends on its spectral density. But the entropy of level-cut structures also depends on the volume fractions of different phases, which is determined by the selection of the cutting level. This dependence has been neglected in earlier work...
October 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346317/liposomal-tricurin-a-synergistic-combination-of-curcumin-epicatechin-gallate-and-resveratrol-repolarizes-tumor-associated-microglia-macrophages-and-eliminates-glioblastoma-gbm-and-gbm-stem-cells
#13
Sumit Mukherjee, Juliet N E Baidoo, Samay Sampat, Andrew Mancuso, Lovena David, Leah S Cohen, Shuiqin Zhou, Probal Banerjee
Glioblastoma (GBM) is a deadly brain tumor with a current mean survival of 12-15 months. Despite being a potent anti-cancer agent, the turmeric ingredient curcumin (C) has limited anti-tumor efficacy in vivo due to its low bioavailability. We have reported earlier a strategy involving the use two other polyphenols, epicatechin gallate (E) from green tea and resveratrol (R) from red grapes at a unique, synergistic molar ratio with C (C:E:R: 4:1:12.5, termed TriCurin) to achieve superior potency against HPV+ tumors than C alone at C:E:R (μM): 32:8:100 (termed 32 μM+ TriCurin)...
January 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29345423/deep-eutectic-solvent-aqueous-solutions-as-efficient-media-for-the-solubilization-of-hardwood-xylans
#14
Eduarda S Morais, Patrícia V Mendonça, Jorge F J Coelho, Mara G Freire, Carmen S R Freire, João A P Coutinho, Armando J D Silvestre
This work contributes to the development of integrated lignocellulosic-based biorefineries by the pioneering exploitation of hardwood xylans by solubilization and extraction in deep eutectic solvents (DES). DES formed by choline chloride and urea or acetic acid were initially evaluated as solvents for commercial xylan as a model compound. The effects of temperature, molar ratio, and concentration of the DES aqueous solutions were evaluated and optimized by using a response surface methodology. The results obtained demonstrated the potential of these solvents, with 328...
January 18, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29345396/performance-rumen-fermentation-and-blood-metabolites-of-dairy-calves-fed-starter-mixtures-supplemented-with-herbal-plants-essential-oils-or-monensin
#15
M Akbarian-Tefaghi, E Ghasemi, M Khorvash
This study evaluated the supplementation effects of three herbal plants (thyme [THY], eucalyptus [EUC] and celery [CEL]), a commercial phytogenic additive ‎containing essential oils (PFA-EO, Digestarom® P.E.P.) and monensin (MON) in calf starter on performance, rumen fermentation and blood metabolites during pre- (days 3-55) and post-weaning (days 56-70). Sixty-six Holstein dairy calves (3 days of age, 41.2 ± 3 kg of BW) were allocated to one of six starters supplemented with: (i) no additives (CON), (ii) MON (30 mg/kg), (iii) THY (23 g/kg), (iv) CEL (23 g/kg), (v) EUC (23 g/kg) and (vi) PFA-EO (3 g/kg)...
January 18, 2018: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29344821/resistance-of-four-fixation-techniques-used-to-treat-subcondylar-fractures
#16
Lucas Cavalieri-Pereira, Guilherme Spagnol, Cássio Edvard Sverzut, Márcio de Moraes, Alexandre Elias Trivellato
OBJECTIVE: This study aimed to evaluate the resistance of four fixation techniques used to treat subcondylar fractures. The following techniques were evaluated: fixation with one 4-hole single straight plate; fixation with one 2-mm 4-hole system plate and one 1.5-mm 3-hole system plate; fixation with two 2-mm plates with a 3-hole anterior plate; and fixation with two 2-mm plates with four holes each. STUDY DESIGN: Each fixation technique was subjected to a resistance test...
January 17, 2018: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29344172/potential-factors-influencing-the-development-of-oral-tongue-squamous-cell-carcinoma-in-young-mature-patients-lingual-position-of-the-mandibular-second-molar-and-narrow-tongue-space
#17
Yusoon Kim, Kohei Okuyama, Yasuyuki Michi, Yoshio Ohyama, Narikazu Uzawa, Satoshi Yamaguchi
The lingual position of the mandibular second molar and narrow tongue space are associated with oral tongue squamous cell carcinoma (OTSCC) development in young mature patients. The present study aimed to assess the role of the mandibular second molar position and tongue space in young mature patients with OTSCC. The medical records of 21 patients with OTSCC aged <50 years, who had an intact mandibular second molar and had undergone computed tomography (CT) imaging between April 2009 and December 2015 at the Section of Maxillofacial Surgery in Tokyo Medical and Dental University, were retrospectively examined...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29342936/structure-characterization-of-honey-processed-astragalus-polysaccharides-and-its-anti-inflammatory-activity-in-vitro
#18
Jingzhu Liao, Chanyi Li, Jing Huang, Wuping Liu, Hongce Chen, Shuangye Liao, Hongyuan Chen, Wen Rui
Honey-processed Astragalus is a dosage form of Radix Astragalus mixed with honey by a traditional Chinese medicine processing method which strengthens the tonic effect. Astragalus polysaccharide (APS), perform its immunomodulatory effects by relying on the tonic effect of Radix Astragalus, therefore, the improved pharmacological activity of honey-processed Astragalus polysaccharide (HAPS) might be due to structural changes during processing. The molecular weights of HAPS and APS were 1,695,788 Da, 2,047,756 Da, respectively, as determined by high performance gel filtration chromatography combined with evaporative light scattering detection (HPGFC-ELSD)...
January 15, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29342901/omega-3-polyunsaturated-fatty-acids-time-dependently-reduce-cell-viability-and-oncogenic-microrna-21-expression-in-estrogen-receptor-positive-breast-cancer-cells-mcf-7
#19
Lauren LeMay-Nedjelski, Julie K Mason-Ennis, Amel Taibi, Elena M Comelli, Lilian U Thompson
The omega-3 polyunsaturated fatty acid (n-3 PUFA), α-linolenic acid (ALA), and its metabolites, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), independently reduce the growth of breast cancer cells in vitro, but the mechanisms, which may involve microRNA (miRNA), are still unclear. The expression of the oncomiR, miR-21, is reduced by DHA treatment, but the effects of ALA on miR-21, alone or combined with EPA and DHA under physiologically relevant concentrations, have not been investigated. The effects of ALA alone and +/-EPA and DHA at the blood molar ratios seen in either humans (1...
January 14, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29341595/self-healing-hydrogels-of-low-molecular-weight-poly-vinyl-alcohol-assembled-by-host-guest-recognition
#20
Yong-Guang Jia, Jiahong Jin, Sa Liu, Li Ren, Juntao Luo, X X Zhu
Poly(vinyl alcohol) (PVA) is a cytocompatible synthetic polymer and has been commonly used to prepare hydrogels. Bile acids and β-cyclodextrin are both natural compounds and they form stable host-guest inclusion complexes. They are attached covalently onto a low molecular weight PVA separately. Self-healing hydrogels can be easily formed by mixing the aqueous solutions of these PVA based polymers. The mechanical properties of the hydrogels can be tuned by varying the molar fractions of bile acid units on PVA...
January 17, 2018: Biomacromolecules
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