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Christie Mitchell-Mata, Brittany Thomas, Brianna Peterson, Fiona Couper
3- and 4-methoxyphencyclidine (3-MeO-PCP, 4-MeO-PCP), structural analogs of phencyclidine (PCP), were among the first legal PCP alternatives to show up on the novel psychoactive substances (NPS) market in Europe in the 2000s. Their structural similarities to PCP and ketamine likely contribute to their demonstrated dissociative anesthetic effects. Limited information exists in the literature about toxic and lethal concentrations of these drugs in biological samples. This case report presents the first two death cases in Washington State in which 3-MeO-PCP was identified...
July 1, 2017: Journal of Analytical Toxicology
Yunbi Xu, Ping Li, Cheng Zou, Yanli Lu, Chuanxiao Xie, Xuecai Zhang, Boddupalli M Prasanna, Michael S Olsen
As one of the important concepts in conventional quantitative genetics and breeding, genetic gain can be defined as the amount of increase in performance that is achieved annually through artificial selection. To develop pro ducts that meet the increasing demand of mankind, especially for food and feed, in addition to various industrial uses, breeders are challenged to enhance the potential of genetic gain continuously, at ever higher rates, while they close the gaps that remain between the yield potential in breeders' demonstration trials and the actual yield in farmers' fields...
May 17, 2017: Journal of Experimental Botany
Vitaly Smelov, Pierre Thomas, Sander Ouburg, Servaas A Morré
A reliable overview of data on the prevalence of Chlamydia trachomatis (CT) in Russia is lacking and needed. All the available data on CT prevalence were analyzed in a systematic literature review on CT prevalence in Russia, strengthened with data from the multicenter study among 1263 people in the second-largest Russian megalopolis, St. Petersburg, testing for CT DNA in urethral, anal, cervical and prostate samples. A total of 10 articles met the inclusion criteria. The overall average prevalence of genital CT infections in Russian populations ranged from 2...
September 29, 2017: Pathogens and Disease
Kun Dai, Qingni Yu, Zhou Zhang, Yuan Wang, Xinming Wang
Indoor air quality is vital to the health and comfort of people who live inside a controlled ecological life support system (CELSS) built for long-term space explorations. Here we measured aromatic hydrocarbons to assess their sources and health risks during a 4-person-180-day integrated experiment inside a CELSS with four cabins for growing crops, vegetables and fruits and other two cabins for working, accommodations and resources management. During the experiment, the average concentrations of benzene, ethylbenzene, m,p-xylenes and o-xylene were found to decrease exponentially from 7...
August 19, 2017: Science of the Total Environment
Tommaso Stefano Carzaniga, Martin Auger, Saverio Braccini, Maruta Bunka, Antonio Ereditato, Konrad Pawel Nesteruk, Paola Scampoli, Andreas Türler, Nicholas van der Meulen
(43)Sc and (44)Sc are positron emitter radionuclides that, in conjunction with the β(-) emitter (47)Sc, represent one of the most promising possibilities for theranostics in nuclear medicine. Their availability in suitable quantity and quality for medical applications is an open issue and their production with medical cyclotrons represents a scientific and technological challenge. For this purpose, an accurate knowledge of the production cross sections is mandatory. In this paper, we report on the cross section measurement of the reactions (43)Ca(p,n)(43)Sc, (44)Ca(p,2n) (43)Sc, (46)Ti(p,α)(43)Sc, and (44)Ca(p,n)(44)Sc at the Bern University Hospital cyclotron...
August 10, 2017: Applied Radiation and Isotopes
Zhenyang Chen, Bo Niu, Lingen Zhang, Zhenming Xu
Recycling rare metal tantalum from waste tantalum capacitors (WTCs) is significant to alleviate the shortage of tantalum resource. However, environmental problems will be caused if the organic materials from WTCs are improperly disposed. This study presented a promising vacuum pyrolysis technology to recycle the organic materials from WTCs. The organics removal rate could reach 94.32wt% according to TG results. The optimal parameters were determined as 425°C, 50Pa and 30min on the basis of response surface methodology (RSM)...
August 12, 2017: Journal of Hazardous Materials
Jo Hee Yoon, Kyung Hoon Kim, Nam Ho Bae, Gap Seop Sim, Yong-Jun Oh, Seok Jae Lee, Tae Jae Lee, Kyoung G Lee, Bong Gill Choi
Paper-based materials have attracted a great deal of attention in sensor applications because they are readily available, biodegradable, inexpensive, and mechanically flexible. Although paper-based sensors have been developed, but important obstacles remian, which include the retention of chemical and mechanical stabilities when paper is wetted. Herein, we develop a simple and scalable process for fabrication of newspaper-based platforms by coating of parylene C and patterning of metal layers. As-prepared parylene C-coated newspaper (PC-paper) provides low-cost, disposable, and mechanically and chemically stable electrochemical platforms for the development of potentiometric ion sensors for the detection of electrolyte cations, such as, H(+) and K(+)...
August 12, 2017: Journal of Colloid and Interface Science
Muneeb Mohideen, Elias Quijano, Eric Song, Yang Deng, Gauri Panse, Wei Zhang, Meredith R Clark, W Mark Saltzman
New methods for long-lasting protection against sexually transmitted disease, such as the human immunodeficiency virus (HIV), are needed to help reduce the severity of STD epidemics, especially in developing countries. Intravaginal delivery of therapeutics has emerged as a promising strategy to provide women with local protection, but residence times of such agents are greatly reduced by the protective mucus layer, fluctuating hormone cycle, and complex anatomical structure of the reproductive tract. Polymeric nanoparticles (NPs) capable of encapsulating the desired cargo, penetrating through the mucosal surfaces, and delivering agents to the site of action have been explored...
August 15, 2017: Biomaterials
Daniel J Dickinson, Francoise Schwager, Lionel Pintard, Monica Gotta, Bob Goldstein
Regulated protein-protein interactions are critical for cell signaling, differentiation, and development. For the study of dynamic regulation of protein interactions in vivo, there is a need for techniques that can yield time-resolved information and probe multiple protein binding partners simultaneously, using small amounts of starting material. Here we describe a single-cell protein interaction assay. Single-cell lysates are generated at defined time points and analyzed using single-molecule pull-down, yielding information about dynamic protein complex regulation in vivo...
August 21, 2017: Developmental Cell
V A Pellizzari, A C Michels, S T Luiz, E M de Souza, Cpm Tabchoury, R N Rached
OBJECTIVE: This study evaluated in situ the potential of a glass ionomer and self-adhesive resin cements to inhibit enamel and dentin demineralization around indirect restorations exposed to cariogenic challenge. The cumulative fluoride release (CFR) of materials was measured in water and acid. METHODS: Seventy blocks cut from human molars received two indirect composite restorations (one in enamel and another in dentin) luted with Ketac Cem EasyMix (GIC, positive control), SeT (SeT), Maxcem Elite (Max), Smart Cem2 (Smart), and RelyX Unicem 2 (Unicem2)...
September 2017: Operative Dentistry
V F Wandscher, C Prochnow, M P Rippe, L S Dorneles, G L Callegari, P Baldissara, R Scotti, L F Valandro
OBJECTIVE: To evaluate the effect of different methods of silica deposition on the intaglio surface of yttrium oxide stabilized zirconia polycrystal (Y-TZP) crowns on the retentive strength of the crowns. METHODS: One hundred simplified full-crown preparations produced from fiber-reinforced polymer material were scanned, and 100 Y-TZP crowns with occlusal retentions were milled. Crown/preparation assemblies were randomly allocated into five groups (n=20) according to the treatment of the intaglio surfaces: TBS = tribochemical silica coating via air-abrasion with 30-μm silica-coated alumina particles; GHF1 = application of thin glaze layer + hydrofluoric acid (HF) etching for 1 minute; GHF5 = glaze application + HF for 5 minutes; GHF15 = glaze application + HF for 15 minutes; NANO = silica nanofilm deposition (5 nm) via magnetron sputtering...
September 2017: Operative Dentistry
A Tsujimoto, W W Barkmeier, T Takamizawa, M A Latta, M Miayazaki
OBJECTIVE: The relationship between the simulated gap wear and generalized wear of resin luting cements was investigated. METHODS: Five resin luting cements, G-Cem LinkForce (GL), Multilink Automix (MA), NX3 Nexus, Panavia V5 (PV), and RelyX Ultimate were evaluated and subsequently subjected to a wear challenge in a Leinfelder-Suzuki (Alabama) wear simulation device. Half of the specimens from each resin luting cement were photo-cured for 40 seconds and the other half were not photo-cured...
September 2017: Operative Dentistry
Eirik O Jåstad, Turid Torheim, Kathleen M Villeneuve, Knut Kvaal, Eli Olaug Hole, Einar Sagstuen, Eirik Malinen, Cecilia M Futsaether
The amino acid l-α-alanine is the most commonly used material for solid-state Electron Paramagnetic Resonance (EPR) dosimetry, due to the formation of highly stable radicals upon irradiation, with yields proportional to the radiation dose. Two major alanine radical components designated R1 and R2 have previously been uniquely characterized from EPR and electron-nuclear double resonance (ENDOR) studies as well as from quantum chemical calculations. There is also convincing experimental evidence of a third minor radical component R3 and a tentative radical structure has been suggested, even though no well-defined spectral signature has been observed experimentally...
August 22, 2017: Journal of Physical Chemistry. A
Brendon T Sargent, Erik J Alexanian
Despite advances in organometallic cross coupling of alkyl electrophiles, there are few stereoselective reactions of chiral, non-racemic substrates. Herein, we report a stereospecific carbonylative coupling of alkyl tosylates and dienes producing enantioenriched dienones. This catalytic process proceeds under low pressure and mild conditions using a simple cobalt catalyst and extends to diverse tosylate and diene coupling partners. The transformation constitutes a unique, convergent approach to the asymmetric synthesis of valuable carbonyl compounds from easily accessed starting materials...
August 22, 2017: Journal of the American Chemical Society
M H Lagares, K S F Silva, A M Barbosa, D A Rodrigues, I R Costa, J V M Martins, M P Morais, F L Campedelli, K K V O Moura
Atherosclerosis is a multifactorial pathological disease that alters the morphology and function of arterial walls. The atheroma growth leads to vessel hardening and lumen narrowing, limiting the blood flow. The atheroma plaque can eventually break, expose highly thrombogenic material and lead to platelet activation and subsequent formation of a thrombus that may block blood flow in loco, or even leading to obstruction of other vessels with a smaller diameter. This process is one of the main determinants of the clinical manifestations of atherosclerosis, such as coronary artery disease, ischemic stroke, and peripheral arterial disease...
August 17, 2017: Genetics and Molecular Research: GMR
H N Heim, E S N Vieira, L R T Polo, N K Lima, G J Silva, G A Linde, N B Colauto, I Schuster
One of the limiting factors in using dominant markers is the unique amplification of the target fragment. Therefore, failures in polymerase chain reaction (PCR) or non-amplifications can be interpreted as an absence of the allele. The possibility of false negatives implies in reduced efficiency in the selection process in genetic breeding programs besides the loss of valuable genetic material. Thus, this study aimed to evaluate the viability of a microsatellite marker as an internal amplification control with a dominant marker for the wheat Glu1-Dx5 gene...
August 17, 2017: Genetics and Molecular Research: GMR
Zahid Ahmad Butt, Nabin Shrestha, Stanley Wong, Margot Kuo, Dionne Gesink, Mark Gilbert, Jason Wong, Amanda Yu, Maria Alvarez, Hasina Samji, Jane A Buxton, James C Johnston, Victoria J Cook, David Roth, Theodora Consolacion, Michelle Murti, Travis S Hottes, Gina Ogilvie, Robert Balshaw, Mark W Tyndall, Mel Krajden, Naveed Z Janjua
BACKGROUND: Co-occurrence of social conditions and infections may affect HIV/HCV disease risk and progression. We examined the changes in relationship of these social conditions and infections on HIV and hepatitis C virus (HCV) infections over time in British Columbia during 1990-2013. METHODS: The BC Hepatitis Testers Cohort (BC-HTC) includes ~1.5 million individuals tested for HIV or HCV, or reported as a case of HCV, HIV, HBV, or tuberculosis linked to administrative healthcare databases...
2017: PloS One
Priyanka Mishra, Amit Kumar, Akshitha Nagireddy, Ashutosh K Shukla, Velusamy Sundaresan
DNA barcoding is used as a universal tool for delimiting species boundaries in taxonomically challenging groups, with different plastid and nuclear regions (rbcL, matK, ITS and psbA-trnH) being recommended as primary DNA barcodes for plants. We evaluated the feasibility of using these regions in the species-rich genus Terminalia, which exhibits various overlapping morphotypes with pantropical distribution, owing to its complex taxonomy. Terminalia bellerica and T. chebula are ingredients of the famous Ayurvedic Rasayana formulation Triphala, used for detoxification and rejuvenation...
2017: PloS One
Erik Dosedla, Pavel Calda
BACKGROUND The aim of this study was to evaluate the outcomes of laparoscopic treatment of women with severe defect of a Cesarean section (CS) scar and Cesarean scar syndrome. MATERIAL AND METHODS A prospective longitudinal study was conducted in 11 women who were treated for Cesarean scar syndrome. Ultrasound examinations were performed transvaginally 1 day before surgery and 6 months after laparoscopy in all women. Clinical data were registered 1 day before laparoscopy and 6 months after laparoscopy. RESULTS Of these 11 women, total dehiscence of the CS scar was present in 72...
August 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Layla Al-Awadi
Indoor air quality (IAQ) in schools is a matter of concern because children are most vulnerable and sensitive to pollutant exposure. Conservation of energy at the expense of ventilation in heating, ventilation, and air conditioning (HVAC) systems adversely affects IAQ. Extensive use of new materials in building, fitting, and refurbishing emit various pollutants such that the indoor environment creates its own discomfort and health risks. Various schools in Kuwait were selected to assess their IAQ. Comprehensive measurements of volatile organic compounds (VOCs) consisting of 72 organic compounds consisting of aliphatic (C3-C6), aromatic (C6-C9), halogenated (C1-C6), and oxygenated (C2-C9) functional groups in indoor air were made for the first time in schools in Kuwait...
August 22, 2017: Journal of the Air & Waste Management Association
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