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https://www.readbyqxmd.com/read/28647365/conjugated-linoleic-acid-prevents-age-induced-bone-loss-in-mice-by-regulating-both-osteoblastogenesis-and-adipogenesis
#1
Guanlin Lin, Huan Wang, Jun Dai, Xiao Li, Ming Guan, Shutao Gao, Qing Ding, Huaixi Wang, Huang Fang
Osteoporosis (OP) can increase the risk of bone fracture and other complications, which is a major clinical problem. Previous researches have revealed that conjugated linoleic acid (CLA) can promote the bone formation. But the mechanisms are not clear. Thus, we tested the hypothesis that CLA acts on bone formation might be via mTOR Complex1 (mTORC 1) pathway by in vitro and vivo assays. We studied the effect of CLA mix on MC3T3-E1 pre-osteoblasts differentiation into osteoblasts, and bone formation under osteoporotic conditions...
June 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28646312/silicon-and-rhizophagus-irregularis-potential-candidates-for-ameliorating-negative-impacts-of-arsenate-and-arsenite-stress-on-growth-nutrient-acquisition-and-productivity-in-cajanus-cajan-l-millsp-genotypes
#2
Neera Garg, Lakita Kashyap
Arsenic (As) gets accumulated in plants via phosphorous transporters and water channels and interferes with nutrient and water uptake, adversely affecting growth and productivity. Although, Si and AM have been reported to combat arsenic stress, their comparative and interactive roles in ameliorating As V and As III toxicities have not been reported. Study evaluated effects of Si and Rhizophagus irregularis on growth, As uptake and yield under arsenate and arsenite stress in two pigeonpea genotypes (metal tolerant-Pusa 2002 and metal sensitive-Pusa 991)...
June 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28646167/effectively-infinite-optical-path-length-created-using-a-simple-cubic-photonic-crystal-for-extreme-light-trapping
#3
Brian J Frey, Ping Kuang, Mei-Li Hsieh, Jian-Hua Jiang, Sajeev John, Shawn-Yu Lin
A 900 nm thick TiO2 simple cubic photonic crystal with lattice constant 450 nm was fabricated and used to experimentally validate a newly-discovered mechanism for extreme light-bending. Absorption enhancement was observed extending 1-2 orders of magnitude over that of a reference TiO2 film. Several enhancement peaks in the region from 600-950 nm were identified, which far exceed both the ergodic fundamental limit and the limit based on surface-gratings, with some peaks exceeding 100 times enhancement...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28644497/novel-tunable-green-red-emitting-oxynitride-phosphors-co-activated-with-ce-3-tb-3-and-eu-3-photoluminescence-and-energy-transfer
#4
Jiansheng Huo, Langping Dong, Wei Lü, Baiqi Shao, Hongpeng You
A series of novel Ce(3+), Tb(3+) and Eu(3+) ion doped Y4SiAlO8N-based oxynitride phosphors were synthesized by the solid-state method and characterized by X-ray powder diffraction, scanning electron microscopy, photoluminescence, lifetimes and thermo-luminescence. The excitation of the Ce(3+)/Tb(3+) co-doped and Ce(3+)/Tb(3+)/Eu(3+) tri-doped phosphor with near-UV radiation results in strong linear Tb(3+) green and Eu(3+) red emission. The occurrence of Ce(3+)-Tb(3+) and Ce(3+)-Tb(3+)-Eu(3+) energy transfer processes is responsible for the bright green or red luminescence...
June 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28644411/on-the-reaction-of-carbonyl-diphosphonic-acid-with-hydroxylamine-and-o-alkylhydroxylamines-unexpected-degradation-of-p-c-p-bridge
#5
Olga A Khomich, Dmitry V Yanvarev, Roman A Novikov, Alexey B Kornev, Elina Puljulla, Jouko Vepsäläinen, Alex R Khomutov, Sergey N Kochetkov
Derivatives of methylenediphosphonic acid possess wide spectra of biological activities and are used in enzymology as research tools as well as in practical medicine. Carbonyl diphosphonic acid is a promising starting building block for synthesis of functionally substituted methylenediphosphonates. Investigation of the interaction of carbonyl diphosphonic acid with hydroxylamine clearly demonstrates that it is impossible to isolate oxime within the pH range 2-12, while only cyanophosphonic and phosphoric acids are the products of the fast proceeding Beckmann-like fragmentation...
June 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28644016/color-tunable-and-white-light-luminescence-in-lanthanide-dicyanoaurate-coordination-polymers
#6
Ryan J Roberts, Debbie Le, Daniel B Leznoff
The new lanthanide-dicyanoaurate coordination polymers [(n)Bu4N]2[Ln(NO3)4Au(CN)2] (Ln = Sm, Dy) and Sm[Au(CN)2]3·3H2O were prepared and structurally characterized and their luminescence spectra described. The emissions of solid-solutions of [(n)Bu4N]2[Ln(NO3)4Au(CN)2] (Ln = Ce, Sm, Eu, Tb, and Dy) were explored with an emphasis on their capacity for luminescent color tuning and white-light emission via the selection of composition, excitation wavelength, and temperature. Specifically, the binary solid-solutions [(n)Bu4N]2[Ce0...
June 23, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28642929/influence-of-dentin-pretreatment-on-bond-strength-of-universal-adhesives
#7
Claudio Poggio, Riccardo Beltrami, Marco Colombo, Marco Chiesa, Andrea Scribante
Objective: The purpose of the present study was to compare bond strength of different universal adhesives under three different testing conditions: when no pretreatment was applied, after 37% phosphoric acid etching and after glycine application. Materials and methods: One hundred and fifty bovine permanent mandibular incisors were used as a substitute for human teeth. Five different universal adhesives were tested: Futurabond M+, Scotchbond Universal, Clearfil Universal Bond, G-Premio BOND, Peak Universal Bond...
January 2017: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28639789/anti-inflammatory-effect-of-anti-tnf-%C3%AE-cationic-phosphorous-dendrimers-nanocomplexes-administered-intranasally-in-a-murine-acute-lung-injury-model
#8
Adam Bohr, Nicolas Tsapis, Ilaria Andreana, Anais Chamarat, Camilla Foged, Claudine Delomenie, Magali Noiray, Nabil El Brahmi, Jean Pierre Majoral, Serge Mignani, Elias Fattal
Inflammation is an essential component of many lung diseases, including asthma, chronic obstructive pulmonary disease (COPD) or acute lung injury. Our purpose was to design efficient carriers for lung delivery of small interfering RNA (siRNA) targeting tumor necrosis factor (TNF-α) in an acute lung injury model. To achieve this goal, two different types of phosphorus-based dendrimers with either pyrrolidinium or morpholinium as terminal protonated amino groups were selected for their better biocompatibility compared to other dendrimers...
June 22, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28638864/protective-effect-of-vanillic-acid-on-ovariectomy-induced-osteoporosis-in-rats
#9
Yong Gui Wang, Liang Bo Jiang, Bo Gou
BACKGROUND: The need for an anti-osteoporotic agent is in high demand since osteoporosis contributes to high rates of disability or impairment (high osteoporotic fracture), morbidity and mortality. Hence, the present study is designed to evaluate the protective effects of vanillic acid (VA) against bilateral ovariectomy-induced osteoporosis in female Sprague-Dawley (SD) rats. MATERIALS AND METHODS: Forty healthy female adult SD rats were separated in to four groups with sham-operated control with bilateral laprotomy (Sham; n = 10), bilateral overiectomy (OVX; n = 10) group, OVX rats were orallay administrated with 50 mg/kg b...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28636985/changes-in-programmed-death-ligand-1-expression-during-cisplatin-treatment-in-patients-with-head-and-neck-squamous-cell-carcinoma
#10
Chan-Young Ock, Sehui Kim, Bhumsuk Keam, Soyeon Kim, Yong-Oon Ahn, Eun-Jae Chung, Jin-Ho Kim, Tae Min Kim, Seong Keun Kwon, Yoon Kyung Jeon, Kyeong Chun Jung, Dong-Wan Kim, Hong-Gyun Wu, Myung-Whun Sung, Dae Seog Heo
Programmed death-ligand 1 (PD-L1) expression is regarded as a predictive marker for anti-PD-1/PD-L1 therapy. The purpose of study was to explore the changes in PD-L1 expression in head and neck squamous cell carcinoma (HNSCC) during treatment. Paired HNSCC tissues prior to and after cisplatin-based treatment were evaluated to determine PD-L1 protein expression by immunohistochemistry. Among the 35 HNSCC patient samples, PD-L1 expression status changed after treatment in 37.1% (13/35) of samples. Among the 13 patients whose baseline PD-L1 was negative, PD-L1 expression was increased in 9 cases (69...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28635288/color-control-of-pr-3-luminescence-by-electron-hole-recombination-energy-transfer-in-catio3-and-cazro3
#11
Zoila Barandiarán, Marco Bettinelli, Luis Seijo
Controlling luminescence in phosphors able to produce several emissions from different stable excited states determines their use in optical devices. We investigate the color control mechanism that quenches the greenish-blue emission in favor of the red one in the archetype phosphor CaTiO3:Pr(3+). State-of-the-art ab initio calculations indicate that direct host-to-dopant energy transfer (released by electron-hole recombination following the interband excitation and structural reorganization) selectively populates the (1)D2 red luminescent state of Pr(3+) and bypasses the (3)P0 greenish-blue emitter...
June 22, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28634869/discharge-permit-market-and-farm-management-nexus-an-approach-for-eutrophication-control-in-small-basins-with-low-income-farmers
#12
Somaye Imani, Mohammad Hossein Niksokhan, Shervin Jamshidi, Karim C Abbaspour
The economic concerns of low-income farmers are barriers to nutrient abatement policies for eutrophication control in surface waters. This study brings up a perspective that focuses on integrating multiple-pollutant discharge permit markets with farm management practices. This aims to identify a more economically motivated waste load allocation (WLA) for non-point sources (NPS). For this purpose, we chose the small basin of Zrebar Lake in western Iran and used the soil and water assessment tool (SWAT) for modeling...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28633133/optically-stimulated-luminescence-study-in-rare-earth-doped-srbpo5
#13
Sonali Gaikwad, R R Patil, M S Kulkarni, S V Moharil
Optically stimulated luminescence (OSL) was studied in rare earth doped SrBPO5 for the possible applications in radiation dosimetry using optically stimulated luminescence. The study shows that the sensitivity of the Eu doped SrBPO5 shows good OSL and the sensitivity is comparable to that of Al2O3:C. It is observed that annealing has a profound effect on the OSL sensitivity. Slowly cooled Eu doped sample shows highest sensitivity and is 77% compared to that Al2O3:C whereas lowest sensitivity is observed in the quenched sample...
June 9, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28633093/fracture-resistance-of-ceramic-and-polymer-based-occlusal-veneer-restorations
#14
Majed Al-Akhali, Mohamed Sad Chaar, Adham Elsayed, Abdulaziz Samran, Matthias Kern
OBJECTIVES: The purpose of this in vitro study was to evaluate the influence of thermodynamic loading on the durability and fracture resistance behavior of occlusal veneers fabricated from different biomedical dental CAD/CAM materials. METHODS: The occlusal surfaces of 64 extracted premolars were prepared in the enamel layer and restored with occlusal veneers with a fissure/cusp thickness of 0.5/0.8mm made from four different dental CAD/CAM materials: group LD lithium disilicate (e...
June 13, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28633077/simplified-empirical-model-for-phosphorous-removal-in-a-facultative-wastewater-lagoon
#15
Saloni Vijay, Qiuyan Yuan
Nutrient removal in a facultative lagoon in Manitoba, Canada, was monitored from May 2015 to April 2016. According to the 12-month data, phosphorous concentration in the effluent did not meet the regulatory requirement. Various models have been developed to predict nitrogen removal from lagoon through the years; however, not much effort has been deployed to model phosphorous removal from lagoons. Therefore, this research aims to relate the lagoon phosphate removal to the volatile suspended solids (VSS), metal concentration, and detention time...
June 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28632911/polymer-functionalized-gold-nanoparticles-as-non-viral-gene-delivery-reagents
#16
M Mar Encabo-Berzosa, Maria Sancho-Albero, Victor Sebastian, Silvia Irusta, Manuel Arruebo, Jesus Santamaria, Pilar Martín Duque
BACKGROUND: In this study we investigated the ability of PEG functionalized gold nanoparticles as non-viral vectors in the transfection of different cell lines, comparing them with commercial lipoplexes. METHODS: Positively charged gold nanoparticles were synthesized using PEI as reducing and stabilizer agent and its cytotoxicity reduced by its functionalization with PEG. We bound the nanoparticles to three plasmids with different sizes (4-40 kpb). The vector internalization was evaluated by confocal and electronic microscopy...
June 20, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/28629707/theoretical-investigation-of-the-selective-dehydration-and-dehydrogenation-of-ethanol-catalyzed-by-small-molecules
#17
Yanqun Wang, Yizhen Tang, Youxiang Shao
Catalytic dehydration and dehydrogenation reactions of ethanol have been investigated systematically using the ab initio quantum chemistry methods The catalysts include water, hydrogen peroxide, formic acid, phosphoric acid, hydrogen fluoride, ammonia, and ethanol itself. Moreover, a few clusters of water and ethanol were considered to simulate the catalytic mechanisms in supercritical water and supercritical ethanol. The barriers for both dehydration and dehydrogenation can be reduced significantly in the presence of the catalysts...
May 17, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28629031/near-infrared-persistent-luminescence-phosphors-znga-2-o-4-cr-3-as-an-accurately-tracker-to-photothermal-therapy-in-vivo-for-visual-treatment
#18
Hongbin Chen, Bin Zheng, Chao Liang, Li Zhao, Ying Zhang, Huizhuo Pan, Wanying Ji, Xiaoqun Gong, Hanjie Wang, Jin Chang
The photothermal therapy agents induced by 808 nm near infrared light laser have good potential for photothermal therapy (PTT) in vivo, with the advantages of harmless treatment, minimally invasion, high efficiency and deep tissue penetration. For the traditional photothermal therapy agents, however, it was impossible to track them in vivo because of the low signal-to-noise ratio, so we cannot conduct the extra near infrared light laser to radiate tumors sites accurately. Herein, we introduce a new complex: indocyanine green (ICG), near-infrared persistent luminescence (PL) phosphors ZnGa2O4:Cr(3+) (ZGC) and mesoporous silica nanoparticles (MSNs) (ICG@mZGC nanoparticles) were assembled for long-lasting optical imaging to guide PTT...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28628912/liver-kinase-b1-amp-activated-protein-kinase-pathway-activation-attenuated-the-progression-of-endotoxemia-in-the-diabetic-mice
#19
Yan Yang, Ruolan Dong, Danli Hu, Zhihui Chen, Menglu Fu, Dao Wen Wang, Xizhen Xu, Ling Tu
BACKGROUND/AIMS: Sepsis is a common disease that continues to increase in prevalence worldwide, and diabetes mellitus may make the situation worse. This study was designed to determine the role of Liver Kinase B1 (LKB1)/adenosine monophosphate-activated protein kinase (AMPK) signaling pathway in diabetic mice complicated with systemic endotoxemia. METHODS: The effects of LKB1/AMPK signaling pathway activation on endotoxemia were investigated in streptozotocin induced diabetic mice (STZ-mice) and db/db diabetic mice...
June 19, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28627172/regiodivergent-glycosylations-of-6-deoxy-erythronolide-b-and-oleandomycin-derived-macrolactones-enabled-by-chiral-acid-catalysis
#20
Jia-Hui Tay, Alonso J Argüelles, Matthew D DeMars, Paul M Zimmerman, David H Sherman, Pavel Nagorny
This work describes the first example of using chiral catalysts to control site-selectivity for the glycosylations of complex polyols such as 6-deoxyerythronolide B and oleandomycin-derived macrolactones. The regiodivergent introduction of sugars at the C3, C5, and C11 positions of macrolactones was achieved by selecting appropriate chiral acids as catalysts or through introduction of stoichiometric boronic acid-based additives. BINOL-based chiral phosphoric acids (CPAs) were used to catalyze highly selective glycosylations at the C5 positions of macrolactones (up to 99:1 rr), whereas the use of SPINOL-based CPAs resulted in selectivity switch and glycosylation of the C3 alcohol (up to 91:9 rr)...
June 19, 2017: Journal of the American Chemical Society
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