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https://www.readbyqxmd.com/read/28351054/drug-delivery-to-the-posterior-segment-of-the-eye
#1
Elad Moisseiev, Anat Loewenstein
Drug delivery into the posterior segment of the eye is complicated by the existence of the blood-ocular barrier. Strategies for delivering drugs to the posterior segment include systemic administration, modification of the barrier, and local drug delivery (including transcorneal, transscleral, and intravitreal). The most commonly used method for drug delivery into the posterior segment is by intravitreal injection. Other routes that can be used to achieve therapeutic drug levels in the posterior segment include topical, iontophoretic, and juxtascleral delivery...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28351015/optimization-for-zeolite-regeneration-and-nitrogen-removal-performance-of-a-hypochlorite-chloride-regenerant
#2
Wei Zhang, Zhen Zhou, Ying An, Silu Du, Danian Ruan, Chengyue Zhao, Ning Ren, Xiaoce Tian
Simultaneous zeolites regeneration and nitrogen removal were investigated by using a mixed solution of NaClO and NaCl (NaClO-NaCl solution), and effects of the regenerant on ammonium removal performance and textural properties of zeolites were analyzed by long-term adsorption and regeneration operations. Mixed NaClO-NaCl solution removed more NH4(+) exchanged on zeolites and converted more of them to nitrogen than using NaClO or NaCl solution alone. Response surface methodological analysis indicated that molar ratio of hypochlorite and nitrogen (ClO(-)/N), NaCl concentration and pH value all had significant effects on zeolites regeneration and NH4(+) conversion to nitrogen, and the optimum condition was obtained at ClO(-)/N of 1...
March 22, 2017: Chemosphere
https://www.readbyqxmd.com/read/28351012/a-comprehensive-overview-on-electro-active-biofilms-role-of-exo-electrogens-and-their-microbial-niches-in-microbial-fuel-cells-mfcs
#3
Ganesh Dattatraya Saratale, Rijuta Ganesh Saratale, Muhammad Kashif Shahid, Guangyin Zhen, Gopalakrishnan Kumar, Han-Seung Shin, Young-Gyun Choi, Sang-Hyoun Kim
Microbial fuel cells (MFCs) are biocatalyzed systems which can drive electrical energy by directly converting chemical energy using microbial biocatalyst and are considered as one of the important propitious technologies for sustainable energy production. Much research on MFCs experiments is under way with great potential to become an alternative to produce clean energy from renewable waste. MFCs have been one of the most promising technologies for generating clean energy industry in the future. This article summarizes the important findings in electro-active biofilm formation and the role of exo-electrogens in electron transfer in MFCs...
March 25, 2017: Chemosphere
https://www.readbyqxmd.com/read/28350964/promoting-vaginal-distribution-of-e7-and-mcl-1-sirna-silencing-nanoparticles-for-cervical-cancer-treatment
#4
Anna Lechanteur, Tania Furst, Brigitte Evrard, Philippe Delvenne, Geraldine Piel, Pascale Hubert
There is an urgent need to develop a less aggressive and more effective treatment against cervical lesions induced by different high-risk human papillomavirus (HR-HPV). We investigated the potential of a cocktail of small interfering RNA (siRNA) directed against the oncoprotein E6 (E6), the oncoprotein E7 (E7) and/or the anti-apoptotic protein MCL-1 (MCL-1). The combination of siRNA anti-E7 and anti-MCL-1 demonstrated high efficacy on multiple HPV16 and HPV18 cell lines and no effects on healthy keratinocytes...
March 28, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28350897/transforming-concepts-into-clinical-trials-and-creating-a-multisite-network-the-leadership-and-operations-center-of-the-antibacterial-resistance-leadership-group
#5
Heather R Cross, Anthony Harris, Rebekka M Arias, Henry F Chip Chambers, Vance G Fowler
The Leadership and Operations Center (LOC) is responsible for facilitating, coordinating, and implementing the Antibacterial Resistance Leadership Group (ARLG) scientific agenda by engaging thought leaders; soliciting research proposals; and developing the processes, tools, and infrastructure required to operationalize studies and create and sustain the ARLG network. These efforts are ongoing as new projects are developed and the network expands and grows to address the ever-changing priorities in antibacterial resistance...
March 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28350861/efficacy-and-effects-on-cardiac-function-of-radiofrequency-catheter-ablation-vs-direct-current-cardioversion-of-persistent-atrial-fibrillation-with-left-ventricular-systolic-dysfunction
#6
Maojing Wang, Shanglang Cai, Wei Ding, Yujie Deng, Qing Zhao
OBJECTIVE: To evaluate the effect of catheter ablation vs. direct current synchronized cardioversion (DCC) in patients with persistent atrial fibrillation (AF) and left ventricular systolic dysfunction, and to define baseline features of patients that will get more benefit from ablation. METHODS: From July 2013 to October 2014, 97 consecutive single-center patients with persistent AF and symptomatic heart failure (left ventricular ejection fraction (LVEF) <50%) underwent DCC followed by amiodarone (n = 40) or circumferential pulmonary vein isolation (PVI; n = 57) according to patient's preference were recruited in the study...
2017: PloS One
https://www.readbyqxmd.com/read/28350806/pharmacokinetics-of-a-single-1g-dose-of-azithromycin-in-rectal-tissue-in-men
#7
Fabian Y S Kong, Thusitha W Rupasinghe, Julie A Simpson, Lenka A Vodstrcil, Christopher K Fairley, Malcolm J McConville, Jane S Hocking
Chlamydia is the most common bacterial sexually transmitted infection among men who have sex with men. Repeat infection following treatment with 1g azithromycin is common and treatment failure of up to 22% has been reported. This study measured the pharmacokinetics of azithromycin in rectal tissue in men following a single 1g dose to assess whether azithromycin reaches the rectal site in adequate concentrations to kill chlamydia. Ten healthy men took a single oral dose of 1g azithromycin and provided nine self-collected swabs and one blood sample over 14 days...
2017: PloS One
https://www.readbyqxmd.com/read/28350799/optimization-and-evaluation-of-astragalus-polysaccharide-injectable-thermoresponsive-in-situ-gels
#8
Zugong Yu, Fanxi Guo, Yangyang Guo, Zhenrui Zhang, Feng Wu, Xiaoqing Luo
The objective of this study was to develop an injectable in situ forming gel system based on Poloxamer for sustained release of Astragalus polysaccharide (APS), thus achieved once or twice administration instead of frequent dosing during long-term treatment. The optimal formulation is 10 g APS, 18 g poloxamer 407, 2 g poloxamer 188, 0.15 g CMC-Na, 0.85 g sodium chloride in 100 ml gel in situ which had a preferable sol-gel transition temperature(T sol-gel) (34.1 ± 0.4°C), and good stability. In vitro release studies, all formulations containing polymer additives had prolonged release time and decreased initial burst to some extent...
2017: PloS One
https://www.readbyqxmd.com/read/28350798/research-priorities-for-harnessing-plant-microbiomes-in-sustainable-agriculture
#9
Posy E Busby, Chinmay Soman, Maggie R Wagner, Maren L Friesen, James Kremer, Alison Bennett, Mustafa Morsy, Jonathan A Eisen, Jan E Leach, Jeffery L Dangl
Feeding a growing world population amidst climate change requires optimizing the reliability, resource use, and environmental impacts of food production. One way to assist in achieving these goals is to integrate beneficial plant microbiomes-i.e., those enhancing plant growth, nutrient use efficiency, abiotic stress tolerance, and disease resistance-into agricultural production. This integration will require a large-scale effort among academic researchers, industry researchers, and farmers to understand and manage plant-microbiome interactions in the context of modern agricultural systems...
March 2017: PLoS Biology
https://www.readbyqxmd.com/read/28350738/development-of-the-united-kingdom-physician-associate-profession
#10
Matthew Aiello, Karen A Roberts
The world of healthcare is changing, and patient needs are changing with it. Traditional doctor-driven models of workforce planning are no longer sustainable in the United Kingdom (UK) healthcare economy, and newer models are needed. In the multiprofessional, multiskilled clinical workforce of the future, the physician associate (PA) has a fundamental role to play as an integrated, frontline, generalist clinician. As of 2016, about 350 PAs were practicing in the UK, with 550 PAs in training and plans to expand rapidly...
April 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28350680/airway-and-feeding-outcomes-of-mandibular-distraction-tongue-lip-adhesion-and-conservative-management-in-pierre-robin-sequence-a-prospective-study
#11
Ibrahim Khansa, Courtney Hall, Lauren L Madhoun, Mark Splaingard, Adriane Baylis, Richard E Kirschner, Gregory D Pearson
BACKGROUND: Pierre Robin sequence is characterized by mandibular retrognathia and glossoptosis resulting in airway obstruction and feeding difficulties. When conservative management fails, mandibular distraction osteogenesis or tongue-lip adhesion may be required to avoid tracheostomy. The authors' goal was to prospectively evaluate the airway and feeding outcomes of their comprehensive approach to Pierre Robin sequence, which includes conservative management, mandibular distraction osteogenesis, and tongue-lip adhesion...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28350643/delayed-referral-results-in-missed-opportunities-for-organ-donation-after-circulatory-death
#12
Kristina Krmpotic, Clare Payne, Cynthia Isenor, Sonny Dhanani
OBJECTIVES: Rates of organ donation and transplantation have steadily increased in the United States and Canada over the past decade, largely attributable to a notable increase in donation after circulatory death. However, the number of patients awaiting solid organ transplantation continues to remain much higher than the number of organs transplanted each year. The objective of this study was to determine the potential to increase donation rates further by identifying gaps in the well-established donation after circulatory death process in Ontario...
March 27, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28350487/epidemiology-and-outcomes-of-lisfranc-injuries-identified-at-the-national-football-league-scouting-combine
#13
Kevin J McHale, Bryan G Vopat, Brendin R Beaulieu-Jones, George Sanchez, James M Whalen, Lucas S McDonald, Christopher W DiGiovanni, George H Theodore, Matthew T Provencher
BACKGROUND: Lisfranc injuries are challenging to treat and may have a detrimental effect on athletic performance. PURPOSE: (1) Determine the epidemiological characteristics of Lisfranc injuries at the annual National Football League (NFL) Scouting Combine, (2) define player positions at risk for these injuries, and (3) evaluate the impact that these injuries and radiographic findings have on NFL draft position and performance. STUDY DESIGN: Cohort study; Level of evidence, 3...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28350435/insight-into-a-fast-photo-tuning-azobenzene-switch-for-sustainably-tailoring-foam-stability
#14
Shaoyu Chen, Yanyan Zhang, Kunlin Chen, Yunjie Yin, Chaoxia Wang
A photo-responsive surfactant of 4-octoxy-4'-(trimethylaminoethoxy) azobenzene (OTAEAzo) has been synthesized for developing a fast photo-tuning foam switch based on its high sensitivity, reversibility and fatigue resistance of photo-isomerization capability. Ultraviolet (UV) light irradiation for 1 s enabled the conversion from trans isomer to cis configuration, while exposing to visible (Vis) light for 3 min induced cis-to-trans transformation, which maintains an excellent cycling stability for 20 cycles of photo-isomerization...
March 28, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28346992/longitudinal-assessment-of-hydropeaking-impacts-on-various-scales-for-an-improved-process-understanding-and-the-design-of-mitigation-measures
#15
C Hauer, P Holzapfel, P Leitner, W Graf
Hydropeaking is one of the main pressures on the aquatic ecology in alpine rivers. Beside studies on abiotic process and biotic response on the local scale there is a lack in process understanding on the reach scale. Especially longitudinal changes of hydropeaking impacts based on retention processes have not been studied yet. Thus, based on unsteady one-dimensional and two-dimensional depth averaged modelling it was targeted to investigate possible changes in vertical ramping velocity for the discussion of possible mitigation measures at the local scale...
January 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346980/ecological-intensification-to-mitigate-impacts-of-conventional-intensive-land-use-on-pollinators-and-pollination
#16
REVIEW
Anikó Kovács-Hostyánszki, Anahí Espíndola, Adam J Vanbergen, Josef Settele, Claire Kremen, Lynn V Dicks
Worldwide, human appropriation of ecosystems is disrupting plant-pollinator communities and pollination function through habitat conversion and landscape homogenisation. Conversion to agriculture is destroying and degrading semi-natural ecosystems while conventional land-use intensification (e.g. industrial management of large-scale monocultures with high chemical inputs) homogenises landscape structure and quality. Together, these anthropogenic processes reduce the connectivity of populations and erode floral and nesting resources to undermine pollinator abundance and diversity, and ultimately pollination services...
March 27, 2017: Ecology Letters
https://www.readbyqxmd.com/read/28346909/bioaugmentaton-in-technosols-created-in-abandoned-pyritic-tailings-can-contribute-to-enhance-soil-c-sequestration-and-plant-colonization
#17
Raúl Zornoza, Melisa Gómez-Garrido, Silvia Martínez-Martínez, María Dolores Gómez-López, Ángel Faz
Creation of Technosols in combination with phytostabilization may be a sustainable strategy to minimize the environmental and human health hazards derived from mine tailings. Bioaugmentation can facilitate plant establishment and growth for efficient phytostabilization. In order to assess if bioaugmentation can increase soil quality and fertility, decrease metal(loid) mobility and accelerate plant colonization, a one-year field experiment was designed with creation of Technosols in two tailings ponds with different pH (acidic (AT) and neutral (NT)), with addition of marble waste (MaW) and two organic materials (pig manure (PM) and sewage sludge (SS), without or with inoculation of effective microorganisms (EM) at three rates...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346901/boundary-work-for-implementing-adaptive-management-a-water-sector-application
#18
Blal Adem Esmail, Davide Geneletti, Christian Albert
Boundary work, defined as effort to mediate between knowledge and action, is a promising approach for facilitating knowledge co-production for sustainable development. Here, we investigate a case study of knowledge co-production, to assess the applicability of boundary work as a conceptual framework to support implementing adaptive management in the water sector. We refer to a boundary work classification recently proposed by Clark et al., (2016), based on three types of knowledge uses, i.e. enlightenment, decision-, and negotiation-support, and three types of sources, i...
March 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28346814/nicotinamide-riboside-a-form-of-vitamin-b3-and-nad-precursor-relieves-the-nociceptive-and-aversive-dimensions-of-paclitaxel-induced-peripheral-neuropathy-in-female-rats
#19
Marta V Hamity, Stephanie R White, Roxanne Y Walder, Mark S Schmidt, Charles Brenner, Donna L Hammond
Injury to sensory afferents may contribute to the peripheral neuropathies that develop after administration of chemotherapeutic agents. Manipulations that increase levels of nicotinamide adenine dinucleotide (NAD) can protect against neuronal injury. This study examined whether nicotinamide riboside (NR), a third form of vitamin B3 and precursor of NAD, diminishes tactile hypersensitivity and place escape-avoidance behaviors in a rodent model of paclitaxel-induced peripheral neuropathy. Female Sprague-Dawley rats received 3 intravenous injections of 6...
January 30, 2017: Pain
https://www.readbyqxmd.com/read/28346622/future-of-family-medicine-faculty-development-in-sub-saharan-africa
#20
Paul R Larson, Patrick Chege, Bruce Dahlman, Christine Gibson, Ann Evensen, Maria C Colon-Gonzalez, Stephanie Onguka, Roberta Lamptey, William E Cayley, Bich-May Nguyen, Brian Johnson, Sawra Getnet, Memoona Hasnain
BACKGROUND AND OBJECTIVES: High-quality family medicine education is needed in sub-Saharan Africa to facilitate the future growth of primary care health systems. Current faculty educators recognize the value of dedicated teacher training and ongoing faculty development. However, they are constrained by inadequate faculty development program availability and institutional support. METHODS: A cross-sectional study design was used to conduct a qualitative needs assessment comprised of 37 in-depth, semi-structured interviews of individual faculty trainers from postgraduate family medicine training programs in eight sub-Saharan African countries...
March 2017: Family Medicine
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