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https://www.readbyqxmd.com/read/29793153/effects-of-mg-2-on-recovery-of-nmda-receptors-from-inhibition-by-memantine-and-ketamine-reveal-properties-of-a-second-site
#1
Nathan G Glasgow, Madeleine R Wilcox, Jon W Johnson
Memantine and ketamine are NMDA receptor (NMDAR) open channel blockers that are thought to act via similar mechanisms at NMDARs, but exhibit divergent clinical effects. Both drugs act by entering open NMDARs and binding at a site deep within the ion channel (the deep site) at which the endogenous NMDAR channel blocker Mg2+ also binds. Under physiological conditions, Mg2+ increases the IC50 s of memantine and ketamine through competition for binding at the deep site. Memantine also can inhibit NMDARs after associating with a second site accessible in the absence of agonist, a process termed second site inhibition (SSI) that is not observed with ketamine...
May 12, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29793150/exploring-the-victimization%C3%A2-early-substance-misuse-relationship-in-search-of-moderating-and-mediating-effects
#2
Glenn D Walters, Dorothy L Espelage
This study was designed to address two research questions. The first research question asked whether physical abuse victimization at the hands of parents/guardians, bullying victimization at the hands of peers, and the abuse x bullying interaction encouraged early involvement in substance misuse. The second research question inquired as to whether the victimization‒substance misuse relationship was mediated by variables proposed by various theories and research studies-specifically, cognitive impulsivity, negative affect, and low self-esteem...
May 21, 2018: Child Abuse & Neglect
https://www.readbyqxmd.com/read/29793114/soil-types-influence-the-fate-of-antibiotic-resistant-bacteria-and-antibiotic-resistance-genes-following-the-land-application-of-sludge-composts
#3
Junya Zhang, Qianwen Sui, Juan Tong, Hui Zhong, Yawei Wang, Meixue Chen, Yuansong Wei
Sewage sludge was generally considered a significant reservoir of antibiotic resistance genes (ARGs) and could enter agricultural systems as fertilizer after composting. Soil types and the discrepancy of sludge composts could have influenced the fate of antibiotic-resistant bacteria (ARB) following the land application of sludge composts, which deserved to be clarified. Thus, the fate of ARB and ARGs following the land application of three types of sludge composts (A, B, and C) to three different soils (red soil, loess, and black soil) was investigated...
May 21, 2018: Environment International
https://www.readbyqxmd.com/read/29793108/manganese-contamination-affects-the-motor-performance-of-wild-northern-quolls-dasyurus-hallucatus
#4
Ami Fadhillah Amir Abdul Nasir, Skye F Cameron, Amanda C Niehaus, Christofer J Clemente, Frank A von Hippel, Robbie S Wilson
Neuromotor deficits are an important sign of manganese (Mn) toxicity in humans and laboratory animals. However, the impacts of Mn exposure on the motor function of wild animals remains largely unknown. Here, we assessed the impact of chronic exposure to Mn from active mining operations on Groote Eylandt, Australia on the motor function of the semi-arboreal northern quoll (Dasyurus hallucatus), an endangered species. The three motor tests conducted-maximum sprint speed on a straight run, manoeuvrability around a corner, and motor control on a balance beam-showed that elevated Mn body burden did not diminish performance of these traits...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793097/quantitative-assessment-of-placental-perfusion-by-three-dimensional-power-doppler-ultrasound-for-twins-with-selective-intrauterine-growth-restriction-in-one-twin
#5
Wei Sun, Jingyi Liu, Ying Zhang, Ailu Cai, Zeyu Yang, Yili Zhao, Yu Wang, Zhe Cao, Qiuju Wei
OBJECTIVE: We quantitatively assessed placental perfusion using three-dimensional (3D) power Doppler ultrasound for twins with selective intrauterine growth restriction (sIUGR) in one twin. STUDY DESIGN: A prospective cross-sectional study was performed for 104 normal monochorionic diamniotic twins and 30 twins with sIUGR. Twins with sIUGR were divided into two groups: in group I (19 twins), both fetuses had continuous forward end-diastolic blood flow in the umbilical artery; in group II (11 twins), the smaller fetus had a loss or a reverse end-diastolic blood flow in the umbilical artery, but the larger fetus had continuous forward end-diastolic blood flow...
May 17, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29792697/association-of-type-2-diabetes-with-submicron-titanium-dioxide-crystals-in-the-pancreas
#6
Adam Heller, Karalee Jarvis, Sheryl S Coffman
Pigment-grade titanium dioxide (TiO2) of 200-300 nm particle diameter is one of the most widely used submicron-sized particle materials. Inhaled and ingested TiO2 particles are known to enter the bloodstream, to be phagocytized by macrophages and neutrophils, to be inflammatory, and to activate the NLRP3 inflammasome. In this pilot study of 11 pancreatic specimens, 8 of the type 2 diabetic pancreas and 3 of the non-diabetic pancreas, we show that 110±70 nm average diameter TiO2 crystals abound in the type 2 diabetic pancreas, but not in the non-diabetic pancreas...
May 24, 2018: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/29792572/galnac-sirna-conjugates-leading-the-way-for-delivery-of-rnai-therapeutics
#7
Aaron D Springer, Steven F Dowdy
Short-interfering RNA (siRNA)-induced RNAi responses have great potential to treat a wide variety of human diseases from cancer to pandemic viral outbreaks to Parkinson's Disease. However, before siRNAs can become drugs, they must overcome a billion years of evolutionary defenses designed to keep invading RNAs on the outside cells from getting to the inside of cells. Not surprisingly, significant effort has been placed in developing a wide array of delivery technologies. Foremost of these has been the development of N-acetylgalactosamine (GalNAc) siRNA conjugates for delivery to liver...
May 24, 2018: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/29792527/enteric-neural-stem-cells-expressing-insulin-like-growth-factor-1-a-novel-cellular-therapy-for-hirschsprung-s-disease-in-mouse-model
#8
Wei Liu, Lijuan Zhang, Rongde Wu
Transplanting enteric neural stem cells (ENSCs) is an innovative approach for replacing enteric neurons in Hirschsprung's disease (HSCR). However, posttransplantation cell survival and differentiation limit efficacy. We aimed to investigate whether transplantation of ENSCs engineered with insulin-like growth factor 1 (IGF-1) could improve survival and differentiation of the engrafted cells and promote functional recovery of the aganglionic colon. ENSCs were isolated from the intestine of neonatal mice and genetically modified to express IGF-1...
May 24, 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29792421/high-temperature-structural-evolution-in-the-ba-3-mo-1-x-w-x-nbo-8-5-system-and-correlation-with-ionic-transport-properties
#9
Andrea Bernasconi, Cristina Tealdi, Lorenzo Malavasi
The evolution of the hybrid structure between 9R hexagonal perovskite and palmierite in the entire Ba3 Mo(1- x) W x NbO8.5 solid solution (where x = 0, 0.25, 0.5, 0.75, and 1) was probed in the 100-900 K range by synchrotron high-resolution powder diffraction. Each sample exhibits a chemical-dependent structural model in the low-temperature regime (from 100 to 500 K) in which 9R and palmierite structures compete each other, the former being progressively favored as tungsten replaces molybdenum. Above 500 K, unit cell parameters and metal site occupancies start to converge toward a similar structural arrangement that is completely reached at 900 K...
May 24, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29792372/sativex%C3%A2-as-add-on-therapy-vs-further-optimized-first-line-antispastics-savant-in-resistant-multiple-sclerosis-spasticity-a-double-blind-placebo-controlled-randomised-clinical-trial
#10
Jolana Markovà, Ute Essner, Bülent Akmaz, Marcella Marinelli, Christiane Trompke, Arnd Lentschat, Carlos Vila Silván
Purpose/aim: To evaluate the efficacy of tetrahydrocannabinol [THC]:cannabidiol [CBD] oromucosal spray (Sativex®) as add-on therapy to optimized standard antispasticity treatment in patients with moderate to severe multiple sclerosis (MS) spasticity. METHODS: Sativex as Add-on therapy Vs. further optimized first-line ANTispastics (SAVANT) was a two-phase trial. In Phase A, eligible patients received add-on THC:CBD spray for 4 weeks to identify initial responders (≥ 20% improvement from baseline in spasticity 0-10 numerical rating scale [NRS] score)...
May 24, 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29792369/gene-delivery-in-the-cornea-in-vitro-ex-vivo-evaluation-of-solid-lipid-nanoparticle-based-vectors
#11
Mónica Vicente-Pascual, Andrea Albano, María Á Solinís, Loredana Serpe, Alicia Rodríguez-Gascón, Federica Foglietta, Elisabetta Muntoni, Josune Torrecilla, Ana Del Pozo-Rodríguez, Luigi Battaglia
AIM: Inflammation is a process that underlies sight-threatening ocular surface diseases, and gene supplementation with the plasmid that encodes for p-IL10 will allow the sustained de novo synthesis of the cytokine to occur in corneal cells, and provide a long-term anti-inflammatory effect. This work describes the development of solid lipid nanoparticle systems for the delivery of p-IL10 to transfect the cornea. RESULTS: In vitro, vectors showed suitable features as nonviral vectors (size, ζ-potential, DNA binding, protection and release), and they were able to enter and transfect human corneal epithelial cells...
May 24, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29792245/the-over-35s-early-intervention-in-psychosis-services-entering-uncharted-territory
#12
Felix Clay, Sophie Allan, Serena Lai, Siona Laverty, Grace Jagger, Cate Treise, Jesus Perez
Aims and methodFollowing the introduction of new standards for early intervention in psychosis (EIP) in England, EIP services are accepting referrals for people aged 35-65. The Cambridgeshire and Peterborough EIP service (CAMEO) aimed to explore the immediate implications for the service, especially with regards to referral numbers and sources. Data were collected from April 2016 to June 2017. RESULTS: Referrals for over-35s represented 25.7% of all new referrals. Fifty per cent of referrals for over-35s were accepted onto caseload (40...
May 24, 2018: BJPsych Bulletin
https://www.readbyqxmd.com/read/29792230/community-health-worker-support-to-improve-hiv-treatment-outcomes-for-older-children-and-adolescents-in-zimbabwe-a-process-evaluation-of-the-zenith-trial
#13
Chido Dziva Chikwari, Victoria Simms, Joanna Busza, Ethel Dauya, Tsitsi Bandason, Prosper Chonzi, Shungu Munyati, Hilda Mujuru, Rashida A Ferrand
BACKGROUND: Community health worker (CHW)-delivered support visits to children living with HIV and their caregivers significantly reduced odds of virological failure among the children in the ZENITH trial conducted in Zimbabwe. We conducted a process evaluation to assess fidelity, acceptability, and feasibility of this intervention to identify lessons that could inform replication and scale-up of this approach. METHODS: Field manuals kept by each CHW, records from monthly supervisory meetings, and participant data collected throughout the trial were used to assess the intervention's implementation...
May 23, 2018: Implementation Science: IS
https://www.readbyqxmd.com/read/29792142/collaboration-of-the-joint-research-centre-and-the-european-customs-laboratories-for-identification-of-new-psychoactive-substances
#14
Claude Guillou, Fabiano Reniero, Joana Lobo Pereira Vicente, Margaret Holland, Kamil Kolar, Hubert Chassaigne, Salvatore Tirendi, Herve Schepers
The emergence of designer drugs as substances of abuse has seen a dramatic increase over the last few years. Customs officials are responsible for the control of products entering the European Union (EU) market. This control applies to chemicals in general, pharmaceutical products and medicines. Numerous products imported from non-EU countries, often -declared as 'bath salts' or 'fertilizers', may in fact contain new psychoactive substance (NPS). These are not necessarily controlled under international law, but are subject to monitoring in agreement with EU legislation...
May 23, 2018: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/29791895/effect-of-postprandial-administration-of-esomeprazole-on-reflux-symptoms-in-gastroesophageal-reflux-disease-a-randomized-controlled-trial
#15
Doron Boltin, Ibrahim Zvidi, Maria Raskin, Hen Kayless, Hemda Schmilovitz-Weiss, Rachel Gingold-Belfer, Yaron Niv, Ram Dickman
BACKGROUND: Esomeprazole is commonly administered with food; however, clinical data to support this practice are lacking. We aimed to determine the effect of postprandial ingestion of esomeprazole on reflux symptoms among patients with gastroesophageal reflux disease (GERD). METHODS: Consecutive patients with GERD adequately controlled with esomeprazole 40 mg daily, entered a 2-week lead-in period during which esomeprazole was administered 30 min before breakfast...
May 23, 2018: Digestive Diseases
https://www.readbyqxmd.com/read/29791883/relationship-between-modification-of-activated-sludge-wastewater-treatment-and-changes-in-antibiotic-resistance-of-bacteria
#16
Ewa Korzeniewska, Monika Harnisz
Biological treatment processes at wastewater treatment plants (WWTPs), which are the most common methods of sewage treatment, could cause selective elimination and/or changes in the proportions of phenotypes/genotypes within bacterial populations in effluent. Therefore, WWTPs based on activated sludge used in sewage treatment constitute an important reservoir of enteric bacteria which harbour potentially transferable resistance genes. Together with treated wastewater, these microorganisms can penetrate the soil, surface water, rural groundwater supplies and drinking water...
May 20, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29791735/practical-considerations-for-transitioning-early-childhood-interventions-to-scale-lessons-from-the-saving-brains-portfolio
#17
James M Radner, Marvin J S Ferrer, Dominique McMahon, Anuraj H Shankar, Karlee L Silver
Small pilot studies of young children have frequently shown promise, but very few have been successfully scaled to the regional or national levels. How can we ensure that these promising approaches move from a suite of pilots to full-scale implementation that can deliver sustainable impact for hundreds of millions of children? To elucidate concrete lessons learned and suggestions on accelerating the transition to impact at scale, we reviewed the Saving Brains portfolio to better understand three points: (1) the extent to which useful signals of impact could be extracted from data at the seed phase, (2) the ways in which innovators (project leaders) were approaching human resource challenges critical for scaling, and (3) the multisector diversity of the portfolio and the way innovators entered partnerships...
May 2018: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/29791584/risk-factors-for-early-onset-ventilator-associated-pneumonia-in-aneurysmal-subarachnoid-hemorrhage-patients
#18
J B Cui, Q Q Chen, T T Liu, S J Li
This study aimed to investigate the risk factors related to ventilator-acquired pneumonia (VAP) in aneurysmal subarachnoid hemorrhage (SAH) patients. From January 2011 to December 2015, a single-center retrospective study including 200 SAH patients requiring mechanical ventilation (MV) ≥48 h was performed. The clinical data of these patients were collected and analyzed. The age range of the patients were 41-63 and 72 (36%) were male. The Glasgow coma scale score range was 5-15 and the Simplified Acute Physiology Score II range was 31-52...
2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/29791507/a-novel-mouse-model-of-campylobacter-jejuni-enteropathy-and-diarrhea
#19
Natasa Giallourou, Gregory L Medlock, David T Bolick, Pedro Hqs Medeiros, Solanka E Ledwaba, Glynis L Kolling, Kenneth Tung, Patricia Guerry, Jonathan R Swann, Richard L Guerrant
Campylobacter infections are among the leading bacterial causes of diarrhea and of 'environmental enteropathy' (EE) and growth failure worldwide. However, the lack of an inexpensive small animal model of enteric disease with Campylobacter has been a major limitation for understanding its pathogenesis, interventions or vaccine development. We describe a robust standard mouse model that can exhibit reproducible bloody diarrhea or growth failure, depending on the zinc or protein deficient diet and on antibiotic alteration of normal microbiota prior to infection...
May 23, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29791433/the-belfast-youth-development-study-byds-a-prospective-cohort-study-of-the-initiation-persistence-and-desistance-of-substance-use-from-adolescence-to-adulthood-in-northern-ireland
#20
Kathryn Higgins, Aisling McLaughlin, Oliver Perra, Claire McCartan, Mark McCann, Andrew Percy, Julie-Ann Jordan
BACKGROUND: Substance misuse persists as a major public health issue worldwide with significant costs for society. The development of interventions requires methodologically sound studies to explore substance misuse causes and consequences. This Cohort description paper outlines the design of the Belfast Youth Development (BYDS), one of the largest cohort studies of its kind in the UK. The study was established to address the need for a long-term prospective cohort study to investigate the initiation, persistence and desistance of substance use, alongside life course processes in adolescence and adulthood...
2018: PloS One
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