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https://www.readbyqxmd.com/read/29334651/effects-of-perinatal-fluoride-exposure-on-the-expressions-of-mir-124-and-mir-132-in-hippocampus-of-mouse-pups
#1
Jixiang Wang, Yuliang Zhang, Zhenzhen Guo, Rui Li, Xingchen Xue, Zilong Sun, Ruiyan Niu
To investigate the effects of perinatal fluoride exposure on learning and memory ability of mouse offspring, ICR female mice were received different doses of sodium fluoride (0, 25, 50, 100 mg/L NaF) from pregnant day 7 to lactational day 21. Pups were exposed to fluoride through the cord blood and breast milk. Open field test showed that compared to the control group, perinatal fluoride exposure significantly decreased the number of entries into the center zone in 100 mg/L NaF group. In the eight-arm maze test, the number of working memory errors, reference memory errors, and the total arm entries were significantly increased in fluoride treatment groups, compared to the control group...
January 8, 2018: Chemosphere
https://www.readbyqxmd.com/read/29334458/direct-electrochemical-vibrio-dna-sensing-adopting-highly-stable-graphene-flavin-mononucleotide-aqueous-dispersion-modified-interface
#2
Tao Yang, Huaiyin Chen, Zhiwei Qiu, Renzhong Yu, Shizhong Luo, Weihua Li, Kui Jiao
A bio-functionalized graphene nanohybrid was prepared by simultaneously sonicating graphene and riboflavin 5'-monophosphate sodium salt (FMNS). FMNS, as a bio-dispersant, shows an efficient stabilization for obtaining highly dispersed graphene nanosheets in an aqueous solution. Due to the superior dispersion of graphene and the excellent electrochemical redox activity of FMNS, a direct electrochemical DNA sensor was fabricated adopting the inherent electrochemical redox activity of Gr-FMNS. The comparison between using traditional electrochemical indicator ([Fe(CN)6]3-/4-) and using the self-signal of Gr-FMNS was fully conducted to study the DNA sensing performance...
January 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29334437/a-randomized-clinical-trial-to-measure-the-erosion-protection-benefits-of-a-novel-stabilized-stannous-fluoride-dentifrice-versus-a-control-dentifrice
#3
Xinyi Zhao, Tao He, Yanyan He, Cathy Cheng, Haijing Chen
OBJECTIVES: The aim of this investigation was to assess the erosion protection ability of a novel stabilized stannous fluoride (SnF2) dentifrice and a control sodium fluoride dentifrice (NaF) using a well-credentialed human in situ model. METHODS: A novel smooth texture 0.454% stabilized SnF2 dentifrice (Crest® Pro-Health™ smooth formula) and a 0.23% NaF marketed control dentifrice with 5% potassium nitrate (Sensodyne® Pronamel®) were compared in a 10-day, single center, randomized, controlled, double-blind, two-treatment, three-period crossover in situ clinical trial...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334435/comparative-antiplaque-effect-of-two-antimicrobial-dentifrices-laboratory-and-clinical-evaluations
#4
Lynn R Friesen, C R Goyal, Jimmy G Qaqish, Tao He, Rachelle Eusebio, Marianne Zsiska, Teresa Farmer, Eva Schneiderman
OBJECTIVES: To compare the effect of a stannous fluoride dentifrice versus a triclosan-containing dentifrice on the reduction of plaque using in vitro and clinical models. METHODS: Both investigations evaluated a novel 0.454% stabilized stannous fluoride dentifrice (Crest® Pro-Health™ smooth formula) versus a sodium fluoride/triclosan positive control dentifrice (Colgate® Total®). The in vitro evaluation utilized the Plaque Glycolysis and Regrowth Model (PGRM), wherein the metabolic effects (acid production/glycolysis inhibition) of the dentifrices were assessed on plaque biofilms grown on glass rods after three days growth and a single dentifrice treatment...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334434/the-case-for-stabilized-stannous-fluoride-dentifrice-an-advanced-formulation-designed-for-patient-preference
#5
Tao He, Svetlana Farrell
Oral diseases, particularly caries and gingivitis, continue to be widespread. Incorporating a stabilized stannous fluoride dentifrice into patients' daily oral hygiene routine is a convenient, cost effective approach to improve and protect their oral health and the appearance of their smile. Unlike other common fluorides that only provide anti-caries benefits (e.g., sodium fluoride and sodium monofluorophosphate), stabilized stannous fluoride formulations have demonstrated broader and significantly greater protection, also reducing plaque, gingivitis, erosion, sensitivity, and halitosis...
December 2017: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29334386/organic-inorganic-hybrids-having-a-talc-like-structure-as-suitable-hosts-to-guest-a-wide-range-of-species
#6
J Brendlé
The sol-gel process involving hydrolysis and condensation reactions is an attractive way to form siloxane based hybrid materials since it is a one-step method performed under mild conditions. Organic-inorganic hybrids having a talc-like structure (TLH) can be obtained using this procedure starting from organotrialkoxysilanes having the formula R-Si(OR')3 (where R stands for an organic moiety and R' for a methyl or ethyl group) with different functionalities, an aqueous or ethanolic solution of a magnesium salt, and in some cases, an aqueous solution of sodium hydroxide...
January 15, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29334299/mucoadhesive-buccal-film-containing-ornidazole-and-dexamethasone-for-oral-ulcers-in-vitro-and-in-vivo-studies
#7
Chengliang Zhang, Yanan Liu, Wei Li, Ping Gao, Dong Xiang, Xiuhua Ren, Dong Liu
A bilayered mucoadhesive buccal film containing a combination of ornidazole (OD) and dexamethasone sodium phosphate (DEX) was prepared using solvent casting to treat oral ulcers. Films were systematically evaluated in vitro to obtain the optimum formulation. The therapeutic effects of these films were investigated in the rabbit oral ulcer model and the in vivo release of OD and DEX in the human oral cavity was also evaluated. The backing layer contained ethyl cellulose and an optimal mucoadhesive layer containing both OD and DEX was produced...
January 15, 2018: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/29334278/a-comparative-safety-review-between-glp-1-receptor-agonists-and-sglt2-inhibitors-for-diabetes-treatment
#8
Agostino Consoli, Gloria Formoso, Maria Pompea Antonia Baldassarre, Fabrizio Febo
Glucagon-like peptide-1 receptor agonists (GLP-1RA) and sodium glucose cotransporter 2 inhibitors (SGLT2i) are of particular interest in type 2 diabetes treatment strategies, due to their efficacy in reducing HbA1c with a low risk of hypoglycaemia, to their positive effects on body weight and blood pressure and in light of their effects on cardiovascular risk and on nephroprotection emerged from the most recent cardiovascular outcome trials. Since it is therefore very likely that GLP-1RA and SGLT2i use will become more and more common, it is more and more important to gather and discuss information about their safety profile...
January 15, 2018: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/29334186/natural-humic-acid-based-phototheranostic-agent
#9
Zhao-Hua Miao, Kai Li, Pei-Ying Liu, Zhenglin Li, Huanjie Yang, Qingliang Zhao, Manli Chang, Qingzhu Yang, Liang Zhen, Cheng-Yan Xu
Humic acids, a major constituent of natural organic carbon resources, are naturally formed through the microbial biodegradation of animal and plant residues. Due to numerous physiologically active groups (phenol, carboxyl, and quinone), the biomedical applications of humic acid have been already investigated across different cultures for several centuries or even longer. In this work, sodium humate, the sodium salt of humic acid, is explored as phototheranostic agent for light-induced photoacoustic imaging and photothermal therapy based on intrinsic absorption in the near-infrared region...
January 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29334133/hierarchical-porous-nanosheets-constructed-by-graphene-coated-interconnected-tio2-nanoparticles-for-ultrafast-sodium-storage
#10
Baosong Li, Baojuan Xi, Zhenyu Feng, Yue Lin, Jincheng Liu, Jinkui Feng, Yitai Qian, Shenglin Xiong
Sodium-ion batteries (SIBs) are considered promising next-generation energy storage devices. However, a lack of appropriate high-performance anode materials has prevented further improvements. Here, a hierarchical porous hybrid nanosheet composed of interconnected uniform TiO2 nanoparticles and nitrogen-doped graphene layer networks (TiO2 @NFG HPHNSs) that are synthesized using dual-functional C3 N4 nanosheets as both the self-sacrificing template and hybrid carbon source is reported. These HPHNSs deliver high reversible capacities of 146 mA h g-1 at 5 C for 8000 cycles, 129 mA h g-1 at 10 C for 20 000 cycles, and 116 mA h g-1 at 20 C for 10 000 cycles, as well as an ultrahigh rate capability up to 60 C with a capacity of 101 mA h g-1 ...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29334109/a-multifunctional-supramolecular-hydrogel-preparation-properties-and-molecular-assembly
#11
Lin Wang, Xuefeng Shi, Yaqian Wu, Jian Zhang, Yuejun Zhu, Jinben Wang
A novel supramolecular hydrogel was designed and constructed by molecular self-assembly of a cationic gemini surfactant, 1,3-bis(N,N-dimethyl-N-cetylammonium)-2-propylacrylate dibromide (AGC16), and an anionic aromatic compound, trisodium 1,3,6-naphthalenetrisulfonate (NTS). Owing to its unique structure, the hydrogel (abbreviated as AGC16/NTS) has the potential to be used as a multifunctional drug delivery system. The structure and properties of AGC16/NTS were characterized by rheological measurements, differential scanning calorimetry, variable-temperature 1H nuclear magnetic resonance, ultraviolet-visible spectroscopy, variable-temperature fluorescence emission spectroscopy, cryogenic scanning electron microscopy, transmission electron microscopy and X-ray diffraction methods...
January 15, 2018: Soft Matter
https://www.readbyqxmd.com/read/29334034/improved-exogenous-dna-uptake-in-bovine-spermatozoa-and-gene-expression-in-embryos-using-membrane-destabilizing-agents-in-icsi-smgt
#12
Esther Sánchez-Villalba, María Elena Arias, Fabiola Zambrano, Pía Loren, Ricardo Felmer
Sperm-mediated gene transfer (SMGT) is a simple, fast, and economical biotechnological tool for producing transgenic animals. However, transgene expression with this technique in bovine embryos is still inefficient due to low uptake and binding of exogenous DNA in spermatozoa. The present study evaluated the effects of sperm membrane destabilization on the binding capacity, location and quantity of bound exogenous DNA in cryopreserved bovine spermatozoa using Triton X-100 (TX-100), lysolecithin (LL) and sodium hydroxide (NaOH)...
January 15, 2018: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29333707/impact-of-gastric-acid-induced-surface-changes-on-mechanical-behavior-and-optical-characteristics-of-dental-ceramics
#13
Aditi Kulkarni, James Rothrock, Jeffery Thompson
PURPOSE: To test the impact of exposure to artificial gastric acid combined with toothbrush abrasion on the properties of dental ceramics. Earlier research has indicated that immersion in artificial gastric acid has caused increased surface roughness of dental ceramics; however, the combined effects of acid immersion and toothbrush abrasion and the impact of increased surface roughness on mechanical strength and optical properties have not been studied. MATERIALS AND METHODS: Three commercially available ceramics were chosen for this study: feldspathic porcelain, lithium disilicate glass-ceramic, and monolithic zirconium oxide...
January 14, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29333698/design-of-enzyme-micelles-with-controllable-concavo-convex-micromorphologies-for-highly-enhanced-stability-and-catalytical-activity
#14
Tao Chen, Yuanhong Xu, Wenrong Yang, Aihua Li, Yao Wang, Jing Sun, Jingquan Liu
Concavo-convex micelles with controllable sizes and nanostructures are prepared via self-assembling polymer-enzyme (e.g., shellac enzyme) conjugates with heterogeneous polymer chains, which exhibit higher enzyme stability (300%) and bioactivity (760%) comparing with the well-defined ones. The applied amphiphilic and negatively charged copolymer, poly (methyl methacrylate)-block-poly (sodium p-styrene sulfonate), is synthesized via reversible addition-fragmentation chain transfer polymerization to modify shellac enzyme and immobilize the enzyme bioactivity inducer by covalent conjugation and electrostatic attraction, respectively...
January 15, 2018: Macromolecular Bioscience
https://www.readbyqxmd.com/read/29332593/facile-synthesis-crystal-structure-dft-calculation-and-biological-activities-of-4-2-fluorophenyl-3-3-methoxybenzyl-1h-1-2-4-triazol-5-4h-one-5
#15
Muhammad Saleem, Muhammad Rafiq, Yeon Ki Jeong, Dae Won Cho, Chong-Hyeak Kim, Sung-Yum Seo, Chang-Shik Choi, Seong-Karp Hong, Ki-Hwan Lee
BACKGROUND: In the past few decades, the design, synthesis and characterization of novel heterocyclic compounds with auspicious biological profile received the considerable attention of scientific community. Among them, the small and simple organic molecular backbone like triazole moiety have broad spectrum of applications in the medicinal as well as diagnostic areas. OBJECTIVE: The objective of present study was the synthesis, characterization and exploration of biological profile of 4-(2-fluorophenyl)-3-(3-methoxybenzyl)-1H-1,2,4-triazol-5(4H)-one (5)...
January 12, 2018: Medicinal Chemistry
https://www.readbyqxmd.com/read/29332430/effect-of-creatine-phosphate-sodium-on-bispectral-index-and-recovery-quality-during-the-general-anaesthesia-emergence-period-in-elderly-patients-a-randomized-double-blind-placebo-controlled-trial
#16
Wei Wang, Wan-You Yu, Jie Lv, Lian-Hua Chen, Zhong Li
Objective To evaluate the effect of creatine phosphate sodium on bispectral index (BIS) and recovery quality during the general anaesthesia emergence period in elderly patients. Methods This randomized, double-blind, placebo-controlled study enrolled patients undergoing transabdominal cholecystectomy under general anaesthesia. Patients were randomly assigned to receive either creatine phosphate sodium (1.0 g/100 ml 0.9% saline; group P) or 100 ml 0.9% saline (group C) over 30 minutes during surgical incision...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29332388/immersion-and-contact-efflorescence-induced-by-mineral-dust-particles
#17
Shuichi B Ushijima, Ryan D Davis, Margaret A Tolbert
The phase state of inorganic salt aerosols impacts their properties including the ability to undergo hygroscopic growth, catalyze heterogeneous reactions, and act as cloud condensation nuclei. Here, we report the first observation of contact efflorescence by mineral dust aerosol. The efflorescence of aqueous ammonium sulfate ((NH4)2SO4) and sodium chloride (NaCl) droplets by contact with three types of mineral dust particles (illite, montmorillonite, and NX Illite), were examined using an optical levitation chamber...
January 13, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/29332180/cd39-adenosinergic-axis-in-renal-pathophysiology-and-therapeutics
#18
REVIEW
Bellamkonda K Kishore, Simon C Robson, Karen M Dwyer
Extracellular ATP interacts with purinergic type 2 (P2) receptors and elicits many crucial biological functions. Extracellular ATP is sequentially hydrolyzed to ADP and AMP by the actions of defined nucleotidases, such as CD39, and AMP is converted to adenosine, largely by CD73, an ecto-5'-nucleotidase. Extracellular adenosine interacts with P1 receptors and often opposes the effects of P2 receptor activation. The balance between extracellular ATP and adenosine in the blood and extracellular fluid is regulated chiefly by the activities of CD39 and CD73, which constitute the CD39-adenosinergic axis...
January 13, 2018: Purinergic Signalling
https://www.readbyqxmd.com/read/29331859/development-of-a-method-to-determine-axitinib-lapatinib-and-afatinib-in-plasma-by-micellar-liquid-chromatography-and-validation-by-the-european-medicines-agency-guidelines
#19
Jaume Albiol-Chiva, Josep Esteve-Romero, Juan Peris-Vicente
A method based on micellar liquid chromatography to quantify the tyrosine kinase inhibitors axitinib, lapatinib and afatinib in plasma is reported. The sample pretreatment was a simple 1/5-dilution in a pure micellar solution, filtration and direct injection, without requiring extraction or purification steps. The three drugs were resolved from the matrix in 17min, using an aqueous solution of 0.07M sodium dodecyl sulfate - 6.0% 1-pentanol, buffered at pH7 with 0.01M phosphate salt as mobile phase, running under isocratic mode at 1mL/min through a C18 column...
January 2, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29331840/post-mortem-vitreous-magnesium-in-adult-population
#20
R Tse, J Garland, K Kesha, P Morrow, L Lam, H Elstub, A D Cala, C Palmiere, S Stables
BACKGROUND: The study of post mortem vitreous magnesium (Mg) is less common than sodium (Na), chloride (Cl) and potassium (K) in the forensic literature. There is no accepted normal range for post mortem vitreous Mg and the relationship between post mortem vitreous Mg levels and post mortem interval (PMI), other electrolyte levels, disease conditions, age and sex have not been fully established. AIM: To investigate the relationship of post mortem vitreous Mg with age, sex, PMI, vitreous electrolyte levels and diabetic status...
December 30, 2017: Forensic Science International
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