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https://www.readbyqxmd.com/read/28736872/global-change-and-the-distributional-dynamics-of-migratory-bird-populations-wintering-in-central-america
#1
Frank A La Sorte, Daniel Fink, Peter J Blancher, Amanda D Rodewald, Viviana Ruiz-Gutierrez, Kenneth V Rosenberg, Wesley M Hochachka, Peter H Verburg, Steve Kelling
Understanding the susceptibility of highly mobile taxa such as migratory birds to global change requires information on geographic patterns of occurrence across the annual cycle. Neotropical migrants that breed in North America and winter in Central America occur in high concentrations on their non-breeding grounds where they spend the majority of the year and where habitat loss has been associated with population declines. Here, we use eBird data to model weekly patterns of abundance and occurrence for 21 forest passerine species that winter in Central America...
July 24, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28735826/affron-%C3%A2-a-novel-saffron-extract-crocus-sativus-l-improves-mood-in-healthy-adults-over-4-weeks-in-a-double-blind-parallel-randomized-placebo-controlled-clinical-trial
#2
Graham Kell, Amanda Rao, Gavin Beccaria, Paul Clayton, Antonio Manuel Inarejos-García, Marin Prodanov
BACKGROUND: In recent years phytotherapy has been explored as a source for alternative treatments for mood disorders. One potential candidate is saffron (Crocus sativus L.), whose main bioactive components are crocins and safranal. OBJECTIVES: The aim of this study was to investigate the efficacy of affron(®), a standardised stigmas extract from Crocus sativus L. for improving mood, stress, anxiety and sleep quality in healthy adults. METHODS: In this 3 arm study, 128 participants self-reporting low mood but not diagnosed with depression, were given affron(®) at 28mg/day, 22mg/day, or a placebo treatment in a randomized, double-blind, placebo-controlled trial for 4 weeks...
August 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28726390/glycolipid-biosurfactants-activate-dimerize-and-stabilize-t-lanuginosus-lipase-in-a-ph-dependent-fashion
#3
Jens Kvist Madsen, Jorn Dovling Kaspersen, Camilla Bertel Andersen, Jannik Nedergaard Pedersen, Kell Kleiner Andersen, Jan Skov Pedersen, Daniel Erik Otzen
We present a study of the interactions between the lipase from Thermomyces lanuginosus (TlL) and the two microbially produced biosurfactants (BS), rhamnolipid (RL) and sophorolipid (SL). Both RL and SL are glycolipids, but RL is anionic while SL is a mixture of anionic and non-ionic species. We investigate the interactions of RL and SL with TlL at pH 6 and 8 and observe different effects at the two pH values. At pH 8, neither RL nor SL had any major effect on TlL stability and activity. At pH 6, in contrast, both surfactants increase TlL's thermal stability and fluorescence and activity measurements indicate interfacial activation of TlL, resulting in 3- and 6-fold improved activity in SL and RL, respectively...
July 20, 2017: Biochemistry
https://www.readbyqxmd.com/read/28709754/nondestructive-mechanical-characterization-of-developing-biological-tissues-using-inflation-testing
#4
P J A Oomen, M A J van Kelle, C W J Oomens, C V C Bouten, S Loerakker
One of the hallmarks of biological soft tissues is their capacity to grow and remodel in response to changes in their environment. Although it is well-accepted that these processes occur at least partly to maintain a mechanical homeostasis, it remains unclear which mechanical constituent(s) determine(s) mechanical homeostasis. In the current study a nondestructive mechanical test and a two-step inverse analysis method were developed and validated to nondestructively estimate the mechanical properties of biological tissue during tissue culture...
July 5, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28708831/biochem4j-integrated-and-extensible-biochemical-knowledge-through-graph-databases
#5
Neil Swainston, Riza Batista-Navarro, Pablo Carbonell, Paul D Dobson, Mark Dunstan, Adrian J Jervis, Maria Vinaixa, Alan R Williams, Sophia Ananiadou, Jean-Loup Faulon, Pedro Mendes, Douglas B Kell, Nigel S Scrutton, Rainer Breitling
Biologists and biochemists have at their disposal a number of excellent, publicly available data resources such as UniProt, KEGG, and NCBI Taxonomy, which catalogue biological entities. Despite the usefulness of these resources, they remain fundamentally unconnected. While links may appear between entries across these databases, users are typically only able to follow such links by manual browsing or through specialised workflows. Although many of the resources provide web-service interfaces for computational access, performing federated queries across databases remains a non-trivial but essential activity in interdisciplinary systems and synthetic biology programmes...
2017: PloS One
https://www.readbyqxmd.com/read/28704160/assessment-of-tribal-bison-worker-hazards-using-trusted-research-facilitators
#6
Ellen Duysen, Kelsey Irvine, Aaron Yoder, Christina Topliff, Clayton Kelling, Shireen Rajaram
OBJECTIVES: Agriculture is one of the most hazardous industries in the United States. Within agriculture, livestock handling is particularly dangerous. While injury and fatality rates for bison handlers have not been reported, workers in many of the newly established tribal bison herds have limited safety training and animal handling experience, making this a vulnerable workforce. Veterinarians and herd managers, working with tribal bison herds, recognized the need for improvement in the working environment and for worker safety training...
July 13, 2017: Journal of Agromedicine
https://www.readbyqxmd.com/read/28700818/fetal-mca-doppler-to-time-intrauterine-transfusions-in-red-cell-alloimmunisation-a-randomised-trial
#7
Jodie M Dodd, Chad Andersen, Jan E Dickinson, Jennie Louise, Andrea Deussen, Rosalie M Grivell, Liliana Voto, Mark D Kilby, Rory Windrim, Greg Ryan
OBJECTIVES: Red cell alloimmunisation affects up to 0.6% of all live births, and can be successfully treated with intrauterine fetal blood transfusion. Fetal middle cerebral artery (MCA) Doppler peak systolic velocity (PSV) is a non-invasive test, to identify fetal anaemia and requiring intrauterine transfusion (IUT). Traditionally, timing of subsequent IUTs has involved estimating a fall in fetal haematocrit of 1% per day, or a fall in fetal haemoglobin of 0.3 g/dL per day. The aim of this pragmatic multi-centre randomised trial was to evaluate whether Doppler MCA-PSV in the fetus that has undergone one IUT for anaemia secondary to red cell alloimmunisation was non-inferior to timing IUT by timing based on predicting the fall in fetal haematocrit or fetal haemoglobin, without compromising infant haemoglobin at birth...
July 12, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28698360/five-minutes-with-steve-kell
#8
Abi Rimmer
No abstract text is available yet for this article.
July 11, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28695424/flt-pet-for-early-response-evaluation-of-colorectal-cancer-patients-with-liver-metastases-a-prospective-study
#9
Marie Benzon Mogensen, Annika Loft, Marianne Aznar, Thomas Axelsen, Ben Vainer, Kell Osterlind, Andreas Kjaer
BACKGROUND: Fluoro-L-thymidine (FLT) is a positron emission tomography/computed tomography (PET/CT) tracer which reflects proliferative activity in a cancer lesion. The main objective of this prospective explorative study was to evaluate whether FLT-PET can be used for the early evaluation of treatment response in colorectal cancer patients (CRC) with liver metastases. Patients with metastatic CRC having at least one measurable (>1 cm) liver metastasis receiving first-line chemotherapy were included...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28678534/confirmatory-factor-analysis-and-structural-equation-modeling-of-socio-cultural-constructs-among-chamorro-and-non-chamorro-micronesian-betel-nut-chewers
#10
Kelle L Murphy, Min Liu, Thaddeus A Herzog
OBJECTIVES: Betel nut chewing is embedded within the cultures of South Asia, and Southeast Asia, and the Western Pacific. The determinants of betel nut consumption are complex. Ongoing consumption of betel nut is affected by cultural, social, and drug-specific effects (i.e. dependence). This study's first objective was to assess the psychometric properties (i.e. reliability and validity) of the socio-cultural constructs in a survey developed for betel nut chewers. The study's second objective was to investigate the influence of socio-cultural variables on betel nut chewing behaviors among Chamorro and non-Chamorro Micronesians in Guam...
July 5, 2017: Ethnicity & Health
https://www.readbyqxmd.com/read/28669524/from-genetic-variability-to-phenotypic-expression-of-blood-group-systems
#11
L Raud, C Férec, Y Fichou
More than 300 red blood cell (RBC) antigens belonging to 36 blood group systems have been officially reported in humans by the International Society of Blood Transfusion (ISBT). Phenotypic variability is directly linked to the expression of the 41 blood group genes. The Rh blood group system, which is composed of 54 antigens, is the most complex and polymorphic system. Many rare genetic variants within the RH (RHD and RHCE) genes, involving various mutational mechanisms (single-nucleotide substitutions, short insertions/deletions, rearrangements, large deletions), have been reported in the literature and reference databases...
June 29, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28655690/metformin-hcl-has-curative-effect-on-rebuilding-of-ventricular-diastolic-functions-in-high-fat-diet-fed-rats
#12
Askin Ender Topal, Ilker Kelle, Hasan Akkoc, Sedat Yilmaz, Sedat Yilmaz, Murat Akkus
Myocardial lipid accumulation due to diabetes and/or obesity plays a role in the progression of left ventricular diastolic dysfunction. Our aims were to exhibit the correlation between histopathologic stage of the liver and cardiac functions, and to evaluate the effects of metformin HCl and rosiglitazone on myocardial functions. Thirty-two male Sprague-Dawley rats were divided into four groups to exhibit the correlation between histopathologic stage of the liver and cardiac functions and to determine whether metformin HCl and rosiglitazone have effects on cardiac functions...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28620752/fatty-metaplasia-quantification-and-impact-on-regional-myocardial-function-as-assessed-by-advanced-cardiac-mr-imaging
#13
Tomas Lapinskas, Bernhard Schnackenburg, Marc Kouwenhoven, Rolf Gebker, Alexander Berger, Remigijus Zaliunas, Burkert Pieske, Sebastian Kelle
OBJECTIVE: This study aimed to investigate the advantages of recently developed cardiac imaging techniques of fat-water separation and feature tracking to characterize better individuals with chronic myocardial infarction (MI). MATERIALS AND METHODS: Twenty patients who had a previous MI underwent CMR imaging. The study protocol included routine cine and late gadolinium enhancement (LGE) technique. In addition, mDixon LGE imaging was performed in every patient. Left ventricular (LV) circumferential (EccLV) and radial (ErrLV) strain were calculated using dedicated software (CMR(42), Circle, Calgary, Canada)...
June 15, 2017: Magma
https://www.readbyqxmd.com/read/28606531/all-natural-bio-plastics-using-starch-betaglucan-composites
#14
Domenico Sagnelli, Jacob J K Kirkensgaard, Concetta Valeria L Giosafatto, Natalia Ogrodowicz, Krzysztof Kruczała, Mette S Mikkelsen, Jean-Eudes Maigret, Denis Lourdin, Kell Mortensen, Andreas Blennow
Grain polysaccharides represent potential valuable raw materials for next-generation advanced and environmentally friendly plastics. Thermoplastic starch (TPS) is processed using conventional plastic technology, such as casting, extrusion, and molding. However, to adapt the starch to specific functionalities chemical modifications or blending with synthetic polymers, such as polycaprolactone are required (e.g. Mater-Bi). As an alternative, all-natural and compostable bio-plastics can be produced by blending starch with other polysaccharides...
September 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28605695/bimanual-tapping-of-a-syncopated-rhythm-reveals-hemispheric-preferences-for-relative-movement-frequencies
#15
Anja Pflug, Florian Gompf, Christian Alexander Kell
In bimanual multifrequency tapping, right-handers commonly use the right hand to tap the relatively higher rate and the left hand to tap the relatively lower rate. This could be due to hemispheric specializations for the processing of relative frequencies. An extension of the double-filtering-by-frequency theory to motor control proposes a left hemispheric specialization for the control of relatively high and a right hemispheric specialization for the control of relatively low tapping rates. We investigated timing variability and rhythmic accentuation in right handers tapping mono- and multifrequent bimanual rhythms to test the predictions of the double-filtering-by-frequency theory...
June 9, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28604623/dynamic-contrast-enhanced-ultrasound-of-colorectal-liver-metastases-as-an-imaging-modality-for-early-response-prediction-to-chemotherapy
#16
Marie Benzon Mogensen, Martin Lundsgaard Hansen, Birthe Merete Henriksen, Thomas Axelsen, Ben Vainer, Kell Osterlind, Michael Bachmann Nielsen
Our aim was to investigate whether dynamic contrast-enhanced ultrasound (DCE-US) can detect early changes in perfusion of colorectal liver metastases after initiation of chemotherapy. Newly diagnosed patients with colorectal cancer with liver metastases were enrolled in this explorative prospective study. Patients were treated with capecitabine or 5-fluorouracil-based chemotherapy with or without bevacizumab. DCE-US was performed before therapy (baseline) and again 10 days after initiation of treatment. Change in contrast-enhancement in one liver metastasis (indicator lesion) was measured...
June 12, 2017: Diagnostics
https://www.readbyqxmd.com/read/28596662/rh-and-kell-phenotype-matched-blood-versus-randomly-selected-and-conventionally-cross-matched-blood-on-incidence-of-alloimmunization
#17
Raj Nath Makroo, Soma Agrawal, Mohit Chowdhry
There is paucity of literature regarding efficacy of transfusion of Rh and Kell matched blood in reducing alloimmunization risk among non-chronically transfused patients. A prospective study to compare efficacy of Rh and Kell phenotype matched blood over randomly selected and conventionally cross-matched blood on the incidence of alloimmunization in patients undergoing cardiac surgery was carried out in the Department of Transfusion Medicine at Indraprastha Apollo Hospitals, New Delhi, from 1st September, 2013 to 31st December, 2014...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28586379/lamp-2-absence-interferes-with-plasma-membrane-repair-and-decreases-t-cruzi-host-cell-invasion
#18
Natália Fernanda Couto, Dina Pedersane, Luisa Rezende, Patrícia P Dias, Tayanne L Corbani, Lívia C Bentini, Anny C S Oliveira, Ludmila F Kelles, Thiago Castro-Gomes, Luciana O Andrade
Trypanosoma cruzi enters host cells by subverting the mechanism of cell membrane repair. In this process, the parasite induces small injuries in the host cell membrane leading to calcium entry and lysosomal exocytosis, which are followed by compensatory endocytosis events that drive parasites into host cells. We have previously shown that absence of both LAMP-1 and 2, major components of lysosomal membranes, decreases invasion of T. cruzi into host cells, but the mechanism by which they interfere with parasite invasion has not been described...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28585832/polymer-chlorosome-nanocomposites-consisting-of-non-native-combinations-of-self-assembling-bacteriochlorophylls
#19
Gregory S Orf, Aaron M Collins, Dariusz M Niedzwiedzki, Marcus Tank, Vera Thiel, Adam Kell, Donald A Bryant, Gabriel A Montaño, Robert E Blankenship
Chlorosomes are one of the characteristic light-harvesting antennas from green sulfur bacteria. These complexes represent a unique paradigm: self-assembly of bacteriochlorophyll pigments within a lipid monolayer without the influence of protein. Because of their large size and reduced complexity, they have been targeted as models for the development of bioinspired light-harvesting arrays. We report the production of biohybrid light-harvesting nanocomposites mimicking chlorosomes, composed of amphiphilic diblock copolymer membrane bodies that incorporate thousands of natural self-assembling bacteriochlorophyll molecules derived from green sulfur bacteria...
June 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28571009/surgery-is-an-effective-option-after-failure-of-chemoradiation-in-cancers-of-the-anal-canal-and-anal-margin
#20
Jean-Baptiste Delhorme, François Severac, Waisse Waissi, Benoit Romain, Delphine Antoni, Kelle C Freel, Catherine Schumacher, Serge Rohr, Cécile Brigand, Georges Noël
BACKGROUND: Surgery for anal canal cancer (ACC) and anal margin cancer (AMC) is the only curative option after failure of chemoradiotherapy (CRT). This study aimed to determine the efficacy of surgery for ACC or AMC after failed CRT. METHODS: This was a single-centre, retrospective study of 161 patients initially treated with CRT. We compared the survival rates of patients successfully treated by CRT with those of patients whose CRT failed (both surgically salvaged and treated palliatively)...
June 2, 2017: Oncology
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