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https://www.readbyqxmd.com/read/29146777/comment-on-the-extent-of-forest-in-dryland-biomes
#1
Daniel M Griffith, Caroline E R Lehmann, Caroline A E Strömberg, Catherine L Parr, R Toby Pennington, Mahesh Sankaran, Jayashree Ratnam, Christopher J Still, Rebecca L Powell, Niall P Hanan, Jesse B Nippert, Colin P Osborne, Stephen P Good, T Michael Anderson, Ricardo M Holdo, Joseph W Veldman, Giselda Durigan, Kyle W Tomlinson, William A Hoffmann, Sally Archibald, William J Bond
Bastin et al (Reports, 12 May 2017, p. 635) infer forest as more globally extensive than previously estimated using tree cover data. However, their forest definition does not reflect ecosystem function or biotic composition. These structural and climatic definitions inflate forest estimates across the tropics and undermine conservation goals, leading to inappropriate management policies and practices in tropical grassy ecosystems.
November 17, 2017: Science
https://www.readbyqxmd.com/read/29141559/new-histopathological-genetic-features-to-improve-active-surveillance-selection-for-low-risk-prostate-cancer
#2
Lih-Ming Wong, Kevin Chu, Niall Corcoran, Sam Norden
BACKGROUND: A recent surge in biomarkers to aid management of men with prostate cancer has occurred. Their applications are varied and not all tests are applicable to the active surveillance setting. OBJECTIVE: To review primary evidence on genetic and immunohistochemical biomarkers, and their role on patient selection and risk stratification for men on active surveillance for prostate cancer. EVIDENCE ACQUISITION: A PubMed electronic search using the terms (biomarker or genetic or histopathological) AND ("prostate cancer" AND "active surveillance") was performed from inception to April 2015...
November 13, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/29136131/characteristic-increases-in-eeg-connectivity-correlate-with-changes-of-structural-mri-in-amyotrophic-lateral-sclerosis
#3
Bahman Nasseroleslami, Stefan Dukic, Michael Broderick, Kieran Mohr, Christina Schuster, Brighid Gavin, Russell McLaughlin, Mark Heverin, Alice Vajda, Parameswaran M Iyer, Niall Pender, Peter Bede, Edmund C Lalor, Orla Hardiman
Amyotrophic lateral sclerosis (ALS) is a terminal progressive adult-onset neurodegeneration of the motor system. Although originally considered a pure motor degeneration, there is increasing evidence of disease heterogeneity with varying degrees of extra-motor involvement. How the combined motor and nonmotor degeneration occurs in the context of broader disruption in neural communication across brain networks has not been well characterized. Here, we have performed high-density crossectional and longitudinal resting-state electroencephalography (EEG) recordings on 100 ALS patients and 34 matched controls, and have identified characteristic patterns of altered EEG connectivity that have persisted in longitudinal analyses...
November 9, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29135268/chemoselective-one-pot-synthesis-of-functionalized-amino-azaheterocycles-enabled-by-coware
#4
Thomas A Clohessy, Alastair Roberts, Eric S Manas, Vipulkumar K Patel, Niall A Anderson, Allan J B Watson
Functionalized bicyclic amino-azaheterocycles are rapidly accessed in a one-pot cross-coupling/reduction sequence enabled by the use of COware. Incompatible reagents are physically separated in a single reaction vessel to effect two chemoselective transformations-Suzuki-Miyaura cross-coupling and heteroarene reduction. The developed method allows access to novel heterocyclic templates, including semisaturated Hedgehog and dual PI3K/mTOR inhibitors, which show enhanced physicochemical properties compared to their unsaturated counterparts...
November 14, 2017: Organic Letters
https://www.readbyqxmd.com/read/29133846/large-scale-matching-of-function-to-the-genetic-identity-of-retinal-ganglion-cells
#5
Filippo Pisano, Erin Zampaglione, Niall McAlinden, Jennifer Roebber, Martin D Dawson, Keith Mathieson, Alexander Sher
Understanding the role of neurons in encoding and transmitting information is a major goal in neuroscience. This requires insight on the data-rich neuronal spiking patterns combined, ideally, with morphology and genetic identity. Electrophysiologists have long experienced the trade-offs between anatomically-accurate single-cell recording techniques and high-density multi-cellular recording methods with poor anatomical correlations. In this study, we present a novel technique that combines large-scale micro-electrode array recordings with genetic identification and the anatomical location of the retinal ganglion cell soma...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29125120/canal-to-diaphysis-ratio-as-a-risk-factor-for-hip-fractures-and-hip-fracture-pattern
#6
Prasad Ellanti, Kunal Mohan, Andrew Moriarity, Niall Hogan, Tom McCarthy
INTRODUCTION: Osteoporosis and related fractures constitute a significant burden on modern healthcare. The standard method of diagnosing osteoporosis with a dual-energy X-ray absorptiometry (DXA) scan is limited by accessibility and expense. The thickness of the cortex of the proximal femur on plain radiographs has been suggested to be a method for indicating osteoporosis and as a risk factor of hip fractures in the elderly. METHODS: A retrospective study was undertaken to assess the usefulness of the canal-diaphysis ratio (CDR) as a risk factor for developing a hip fracture, excluding patients presenting under 50 years old, following high-energy trauma or pathological fractures...
2017: SICOT-J
https://www.readbyqxmd.com/read/29121824/interpersonal-processes-of-couples-daily-support-for-goal-pursuit-the-example-of-physical-activity
#7
Corina Berli, Niall Bolger, Patrick E Shrout, Gertraud Stadler, Urte Scholz
Little is known about how couples' social support facilitates the pursuit of important goals in daily life. Using an interpersonal perspective, we examined the effects of support provision and receipt on same-day physical activity, and studied the role of partners' joint engagement in activities. One hundred nineteen heterosexual couples reported on target persons' received and partners' provided support across 28 diary days, yielding 2,854 valid days. A dyadic report on couples' joint engagement was obtained from a subset of 88 couples...
November 1, 2017: Personality & Social Psychology Bulletin
https://www.readbyqxmd.com/read/29118385/enhanced-physicochemical-properties-of-polydimethylsiloxane-based-microfluidic-devices-and-thin-films-by-incorporating-synthetic-micro-diamond
#8
Sidra Waheed, Joan M Cabot, Niall P Macdonald, Umme Kalsoom, Syamak Farajikhah, Peter C Innis, Pavel N Nesterenko, Trevor W Lewis, Michael C Breadmore, Brett Paull
Synthetic micro-diamond-polydimethylsiloxane (PDMS) composite microfluidic chips and thin films were produced using indirect 3D printing and spin coating fabrication techniques. Microfluidic chips containing up to 60 wt% micro-diamond were successfully cast and bonded. Physicochemical properties, including the dispersion pattern, hydrophobicity, chemical structure, elasticity and thermal characteristics of both chip and films were investigated. Scanning electron microscopy indicated that the micro-diamond particles were embedded and interconnected within the bulk material of the cast microfluidic chip, whereas in the case of thin films their increased presence at the polymer surface resulted in a reduced hydrophobicity of the composite...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29100324/modulation-of-the-fanconi-anemia-pathway-via-chemically-induced-changes-in-chromatin-structure
#9
David A Vierra, Jada L Garzon, Meghan A Rego, Morganne M Adroved, Maurizio Mauro, Niall G Howlett
Fanconi anemia (FA) is a rare disease characterized by congenital defects, bone marrow failure, and atypically early-onset cancers. The FA proteins function cooperatively to repair DNA interstrand crosslinks. A major step in the activation of the pathway is the monoubiquitination of the FANCD2 and FANCI proteins, and their recruitment to chromatin-associated nuclear foci. The regulation and function of FANCD2 and FANCI, however, is poorly understood. In addition, how chromatin state impacts pathway activation is also unknown...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29090945/reply-to-might-high-frequency-oscillatory-ventilation-improve-prognosis-of-more-severe-acute-respiratory-distress-syndrome-not-so-sure
#10
Maureen O Meade, Duncan Young, Niall D Ferguson
No abstract text is available yet for this article.
November 1, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29079093/silver-engineered-nanoparticles-in-freshwater-systems-likely-fate-and-behaviour-through-natural-attenuation-processes
#11
REVIEW
David Shevlin, Niall O'Brien, Enda Cummins
Growth in the nanotechnology sector is likely introducing unnatural formations of materials on the nanoscale (10(-9)m) to the environment. Disposal and degradation of products incorporating engineered nanomaterials (ENMs) are likely being released into natural aquatic systems un-intentionally primarily via waste water effluents. The fate and behaviour of metallic based nanoparticles (NPs) such as silver (Ag) in aquatic waters is complex with high levels of variability and uncertainty. In-situ physical, biological and chemical (natural attenuation) processes are likely to influence ENM fate and behaviour in freshwater systems...
October 24, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29068800/the-impact-of-positive-resection-margins-on-survival-and-recurrence-following-resection-and-adjuvant-chemotherapy-for-pancreatic-ductal-adenocarcinoma
#12
Paula Ghaneh, Jorg Kleeff, Christopher M Halloran, Michael Raraty, Richard Jackson, James Melling, Owain Jones, Daniel H Palmer, Trevor F Cox, Chloe J Smith, Derek A O'Reilly, Jakob R Izbicki, Andrew G Scarfe, Juan W Valle, Alexander C McDonald, Ross Carter, Niall C Tebbutt, David Goldstein, Robert Padbury, Jennifer Shannon, Christos Dervenis, Bengt Glimelius, Mark Deakin, Alan Anthoney, Markus M Lerch, Julia Mayerle, Attila Oláh, Charlotte L Rawcliffe, Fiona Campbell, Oliver Strobel, Markus W Büchler, John P Neoptolemos
OBJECTIVE AND BACKGROUND: Local and distant disease recurrence are frequently observed following pancreatic cancer resection, but an improved understanding of resection margin assessment is required to aid tailored therapies. METHODS: Analyses were carried out to assess the association between clinical characteristics and margin involvement as well as the effects of individual margin involvement on site of recurrence and overall and recurrence-free survival using individual patient data from the European Study Group for Pancreatic Cancer (ESPAC)-3 randomized controlled trial...
October 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29064319/short-versus-long-term-stenting-in-children-with-subglottic-stenosis-undergoing-laryngotracheal-reconstruction
#13
David F Smith, Alessandro de Alarcon, Niall D Jefferson, Meredith E Tabangin, Michael J Rutter, Robin T Cotton, Catherine K Hart
Objectives Suprastomal stents are routinely used in laryngotracheal reconstruction (LTR) to stabilize grafts and provide framework to sites of repair. However, the duration of stenting varies according to patient history and physician preference. We examined outcomes of short- versus long-term stenting in children with subglottic stenosis (SGS) undergoing LTR. Study Design Case series with chart review. Setting Tertiary care pediatric hospital. Subjects and Methods Thirty-six children <18 years old who underwent double-stage LTR for SGS from January 2012 to January 2015 were included...
October 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29050526/long-term-quality-of-life-after-extracorporeal-membrane-oxygenation-in-ards-survivors-systematic-review-and-meta-analysis
#14
M Elizabeth Wilcox, Valente Jaramillo-Rocha, Carol Hodgson, Michael S Taglione, Niall D Ferguson, Eddy Fan
PURPOSE: Extracorporeal membrane oxygenation (ECMO) is an increasingly prevalent treatment for acute respiratory failure (ARF). To evaluate the impact of ECMO support on long-term outcomes for critically ill adults with ARF. METHODS: We searched electronic databases 1948 through to November 30 2016; selected controlled trials or observational studies of critically ill adults with acute respiratory distress syndrome, examining long-term morbidity specifically health-related quality of life (HRQL); 2 authors independently selected studies, extracted data, and assessed methodological quality...
January 1, 2017: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/29050365/mitochondrial-genome-variation-and-prostate-cancer-a-review-of-the-mutational-landscape-and-application-to-clinical-management
#15
REVIEW
Anton M F Kalsbeek, Eva K F Chan, Niall M Corcoran, Christopher M Hovens, Vanessa M Hayes
Prostate cancer is a genetic disease. While next generation sequencing has allowed for the emergence of molecular taxonomy, classification is restricted to the nuclear genome. Mutations within the maternally inherited mitochondrial genome are known to impact cancer pathogenesis, as a result of disturbances in energy metabolism and apoptosis. With a higher mutation rate, limited repair and increased copy number compared to the nuclear genome, the clinical relevance of mitochondrial DNA (mtDNA) variation requires deeper exploration...
September 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29049464/clustering-of-neuropsychiatric-disease-in-first-degree-and-second-degree-relatives-of-patients-with-amyotrophic-lateral-sclerosis
#16
Margaret O'Brien, Tom Burke, Mark Heverin, Alice Vajda, Russell McLaughlin, John Gibbons, Susan Byrne, Marta Pinto-Grau, Marwa Elamin, Niall Pender, Orla Hardiman
Importance: Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative condition primarily involving the motor system. There is increasing epidemiologic evidence of an association between ALS and a wider spectrum of neurodegenerative and neuropsychiatric disorders among family members, including schizophrenia and psychotic illness and suicidal behavior. Objective: To examine the frequency and range of neuropsychiatric conditions that occur within individual first-degree and second-degree relatives of patients with ALS...
October 16, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29048159/using-printing-orientation-for-tuning-fluidic-behavior-in-microfluidic-chips-made-by-fused-deposition-modeling-3d-printing
#17
Feng Li, Niall P Macdonald, Rosanne M Guijt, Michael C Breadmore
Fluidic behavior in microfluidic devices is dictated by low Reynolds numbers, complicating mixing. Here, the effect of the orientation of the extruded filament on the fluidic behavior is investigated in fused deposition modeling (FDM) printed fluidic devices. Devices were printed with filament orientations at 0°, 30°, 60°, and 90° to the direction of the flow. The extent of mixing was observed when pumping yellow and blue solutions into the inlets of a Y-shaped device, and measuring the extent of mixing of two colored solutions under different angles and at flow rates of 25, 50, and 100 μL/min...
November 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29043837/lung-recruitment-maneuvers-for-adult-patients-with-acute-respiratory-distress-syndrome-a-systematic-review-and-meta-analysis
#18
Ewan Goligher, Carol Hodgson, Neill Kj Adhikari, Maureen O Meade, Hannah Wunsch, Elizabeth Uleryk, Ognjen Gajic, Marcelo Amato, Niall D Ferguson, Gordon D Rubenfeld, Eddy Fan
RATIONALE: In patients with acute respiratory distress syndrome (ARDS), lung recruitment maneuvers (LRMs) may prevent ventilator-induced lung injury and improve survival. OBJECTIVES: To summarize the current evidence in support of the use of LRMs in adult patients with ARDS. METHODS: We conducted a systematic review and meta-analysis of randomized trials comparing mechanical ventilation strategies with and without LRMs. Eligible trials were identified from previously published systematic reviews and an updated literature search...
October 18, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29043832/high-frequency-oscillation-for-adult-patients-with-acute-respiratory-distress-syndrome-a-systematic-review-and-meta-analysis
#19
Ewan Goligher, Laveena Munshi, Neill Kj Adhikari, Maureen O Meade, Carol Hodgson, Hannah Wunsch, Elizabeth Uleryk, Ognjen Gajic, Marcelo Amato, Niall D Ferguson, Gordon D Rubenfeld, Eddy Fan
RATIONALE: By minimizing tidal lung strain and maintaining alveolar recruitment, high frequency oscillatory ventilation (HFOV) may protect against ventilator-induced lung injury. OBJECTIVES: To summarize the current evidence in support of the use of HFOV in adult patients with ARDS. METHODS: We conducted a systematic review and meta-analysis of randomized trials comparing mortality rates with the use of HFOV vs. conventional mechanical ventilation for adult patients with acute respiratory distress syndrome...
October 18, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29043786/measuring-nanoparticle-attachment-efficiency-in-complex-systems
#20
Nicholas K Geitner, Niall Joseph O'Brien, Amalia Turner, Enda Cummins, Mark R Wiesner
As process-based environmental fate and transport models for engineered nanoparticles are developed, there is a need for relevant and reliable measures of nanoparticle behaviour. The affinity of nanoparticles for various surfaces (α) is one such measure. Measurements of the affinity of nanoparticles obtained by flowing particles through a porous medium are constrained by the types of materials or exposure scenarios that can be configured into such column studies. Utilizing glass beads and kaolinite as model collector surfaces, we evaluate a previously developed mixing method for measuring nanoparticle attachment to environmental surfaces, and validate this method with an equivalent static column system over a range of organic matter concentrations and ionic strengths...
October 18, 2017: Environmental Science & Technology
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