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https://www.readbyqxmd.com/read/28738623/analysis-of-illegal-peptide-drugs-via-hilic-dad-ms
#1
Steven Janvier, Evelien De Sutter, Evelien Wynendaele, Bart De Spiegeleer, Celine Vanhee, Eric Deconinck
Biopharmaceuticals have established themselves as highly efficient medicines, and are still one of the fastest growing parts of the health-product industry. Unfortunately, the introduction of these promising new drugs went hand in hand with the creation of a black market for illegal and counterfeit biotechnology drugs. Particularly popular are the lyophilised peptides with a molecular weight of less than 5kDa. Most of them are meant for subcutaneous injection and are easily accessible via the internet. In recent years, different methods based on reversed phase liquid chromatography have been developed to detect and quantify these peptides...
November 1, 2017: Talanta
https://www.readbyqxmd.com/read/28738330/the-brain-gut-axis-contributes-to-neuroprogression-in-stress-related-disorders
#2
Kieran Rea, Timothy G Dinan, John F Cryan
There is a growing emphasis on the relationship between the complexity and diversity of the microorganisms that inhabit our gut (human gastrointestinal microbiota) and brain health. The microbiota-gut-brain axis is a dynamic matrix of tissues and organs including the brain, glands, gut, immune cells, and gastrointestinal microbiota that communicate in a complex multidirectional manner to maintain homeostasis. Changes in this environment may contribute to the neuroprogression of stress-related disorders by altering physiological processes including hypothalamic-pituitary-adrenal axis activation, neurotransmitter systems, immune function, and inflammatory responses...
July 24, 2017: Modern Trends in Pharmacopsychiatry
https://www.readbyqxmd.com/read/28738303/bio-accumulation-of-lanthanum-from-lanthanum-modified-bentonite-treatments-in-lake-restoration
#3
G Waajen, F van Oosterhout, M Lürling
Lanthanum (La) modified bentonite (LMB) is one of the available mitigating agents used for the reduction of the phosphorus (P) recycling in eutrophic lakes. The potential toxicity of the La from LMB to aquatic organisms is a matter of concern. In this study the accumulation of La was investigated in the macrophyte Elodea nuttallii, in chironomid larvae and in several fish species during periods up to five years following in situ LMB applications. The application of LMB increased the La concentration of exposed plants and animals...
July 21, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28738203/early-detection-monitoring-for-aquatic-non-indigenous-species-optimizing-surveillance-incorporating-advanced-technologies-and%C3%A2-identifying-research-needs
#4
REVIEW
Anett S Trebitz, Joel C Hoffman, John A Darling, Erik M Pilgrim, John R Kelly, Emily A Brown, W Lindsay Chadderton, Scott P Egan, Erin K Grey, Syed A Hashsham, Katy E Klymus, Andrew R Mahon, Jeffrey L Ram, Martin T Schultz, Carol A Stepien, James C Schardt
Following decades of ecologic and economic impacts from a growing list of nonindigenous and invasive species, government and management entities are committing to systematic early- detection monitoring (EDM). This has reinvigorated investment in the science underpinning such monitoring, as well as the need to convey that science in practical terms to those tasked with EDM implementation. Using the context of nonindigenous species in the North American Great Lakes, this article summarizes the current scientific tools and knowledge - including limitations, research needs, and likely future developments - relevant to various aspects of planning and conducting comprehensive EDM...
July 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28738201/interbasin-water-transfer-for-the-rehabilitation-of-a-transboundary-mediterranean-stream-an-economic-analysis
#5
Ariel Akron, Andrea Ghermandi, Tamar Dayan, Yaron Hershkovitz
Global demand for freshwater is increasing as human population grows, climate changes and water resources are being overexploited. Consequently, many freshwater ecosystems, particularly in water-stressed regions, are severely degraded. Here we present a unique case of an Interbasin Water Transfer (IWT) project aiming at ecosystem rehabilitation and recreation enhancement of an intermittent transboundary stream (Ayun, Israel). For the past century, water diversion at the Lebanese side had led to flow secession in the Israeli Ayun Nature Reserve during the dry season (May-November)...
July 21, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28738195/proteomic-and-genetics-insights-on-the-response-of-the-bacteriocinogenic-lactobacillus-sakei-crl1862-during-biofilm-formation-on-stainless-steel-surface-at-10%C3%A2-c
#6
Mariana Pérez-Ibarreche, Lucía M Mendoza, Graciela Vignolo, Silvina Fadda
Some lactic acid bacteria have the ability to form biofilms on food-industry surfaces and this property could be used to control food pathogens colonization. Lactobacillus sakei CR1862 was selected considering its bacteriocinogenic nature and ability to adhere to abiotic surfaces at low temperatures. In this study, the proteome of L. sakei CRL1862 grown either under biofilm on stainless steel surface and planktonic modes of growth at 10°C, was investigated. Using two-dimensional gel electrophoresis, 29 out of 43 statistically significant spots were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry...
July 4, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28738143/sustained-high-nutrient-supply-as-an-allelopathic-trigger-between-periphytic-biofilm-and-microcystis-aeruginosa
#7
Yonghong Wu, Jun Tang, Junzhuo Liu, Bruce Graham, Philip G Kerr, Hong Chen
Allelopathy among aquatic organisms, especially microorganisms, has received growing attention in recent years for its role in shaping interactions with bloom-forming algae. Many studies have shown that allelopathy occurs and increases under nutrient limiting conditons. However, to date there is no reported direct evidence to indicate allelopathy occurs under the condition of constant high nutrient supply. Here we report the allelopathic action of periphytic biofilm on bloom-forming cyanobacteria (Microcystis aeruginosa), which was triggered by the stress of high nutrient conditions, and continues while nutrients are sustained at high levels (trophic state index at 159 and 171)...
July 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28738074/adversity-emotion-recognition-and-empathic-concern-in-high-risk-youth
#8
Jodi A Quas, Kelli L Dickerson, Richard Matthew, Connor Harron, Catherine M Quas
Little is known about how emotion recognition and empathy jointly operate in youth growing up in contexts defined by persistent adversity. We investigated whether adversity exposure in two groups of youth was associated with reduced empathy and whether deficits in emotion recognition mediated this association. Foster, rural poor, and comparison youth from Swaziland, Africa identified emotional expressions and rated their empathic concern for characters depicted in images showing positive, ambiguous, and negative scenes...
2017: PloS One
https://www.readbyqxmd.com/read/28738065/impact-of-controlled-release-urea-on-maize-yield-and-nitrogen-use-efficiency-under-different-water-conditions
#9
Guanghao Li, Bin Zhao, Shuting Dong, Jiwang Zhang, Peng Liu, Tony J Vyn
Controlled release urea (CRU) has been widely adopted to increase nitrogen (N) use efficiency and maize production, but the impacts can range widely depending on water availability in the soil. In an experiment using Zhengdan 958 (a popular summer maize hybrid), three levels of water treatments (adequate water condition [W3], which maintained soil moisture at about 75% ± 5% of the soil's field capacity; mild water stress [W2], which maintained moisture content at 55% ± 5% of field capacity; and severe water stress [W1], which had a moisture content of 35% ± 5% of field capacity) and four levels of controlled release urea fertilizer (N0, N1, N2 and N3 were 0, 105, 210 and 315 kg N ha-1, respectively) were compared in a rainout shelter system with soil...
2017: PloS One
https://www.readbyqxmd.com/read/28738038/nurse-education-and-survivorship-building-the-specialty-through-training-and-program-development%C3%A2
#10
Marcia Grant, Mary McCabe, Denice Economou
BACKGROUND: As the number of cancer survivors in the United States continues to grow, the need to educate healthcare providers in the components of survivorship care remains a challenge in the current healthcare system. Survivors have unique concerns and follow-up requirements that are key to minimizing their risks for recurrence and supporting quality of life.
. OBJECTIVES: This article describes the impact of the curriculum, faculty, and teaching methods for an educational program to prepare nurses to provide cancer survivorship care...
August 1, 2017: Clinical Journal of Oncology Nursing
https://www.readbyqxmd.com/read/28737982/knocking-on-prison-s-door-a-10-fold-rise-in-the-number-of-psychotic-prisoners-in-finland-during-the-years-2005-2016
#11
Alo Jüriloo, Lauri Pesonen, Hannu Lauerma
BACKGROUND: As in many European countries, Finnish psychiatric services experienced a rapid process of deinstitutionalization in the 1990s. In recent decades, the decrease in numbers of psychiatric hospital beds has in several countries been found to be linked with increasing criminality among severely mentally ill individuals. It has been concluded that deinstitutionalization could be the main reason for this development. AIM: To investigate whether the prevalence of severely mentally ill persons to prison is a growing trend also in Finland...
July 24, 2017: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/28737963/2017-asco-quality-care-symposium-nurturing-a-new-and-growing-community-of-practitioners
#12
Michael Neuss, Joseph Jacobson, Monika Krzyzanowska
No abstract text is available yet for this article.
July 24, 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/28737929/enhanced-degradation-of-tce-on-a-superfund-site-using-endophyte-assisted-poplar-tree-phytoremediation
#13
Sharon Lafferty Doty, John Leonard Freeman, Christopher M Cohu, Joel Gerard Burken, Andrea Firrincieli, Andrew Simon, Zareen Khan, Jud G Isebrands, Joseph Lukas, Michael J Blaylock
Trichloroethylene (TCE) is a widespread environmental pollutant common in groundwater plumes associated with industrial manufacturing areas. We had previously isolated and characterized a natural bacterial endophyte, Enterobacter sp. strain PDN3, of poplar trees, that rapidly metabolizes TCE, releasing chloride ion. We now report findings from a successful three-year field trial of endophyte-assisted phytoremediation on the Middlefield-Ellis-Whisman Superfund Study Area TCE plume in the Silicon Valley of California...
July 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28737915/extended-study-on-crystal-growth-and-viscosity-in-ge-sb-se-bulk-glasses-and-thin-films
#14
Simona Martinkova, Jaroslav Barták, Petr Koštál, Jiri Malek, Hiroyo Segawa
Crystal growth rates in Ge18Sb28Se54 bulk glass and thin film were measured using optical and scanning electron microscopy under isothermal conditions. The studied temperature region was 255 - 346 °C and 254 - 286 °C for bulk glass and thin film, respectively. The compact crystalline layer growing from the surface into the amorphous core was formed in bulk glasses and no bulk crystallization was observed. In the case of thin films, needle-shape crystals were formed. The crystalline layer and needle-shape crystals grew linearly with time that corresponds to crystal growth controlled by the crystal-liquid interface kinetics...
July 24, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28737788/a-multiscale-agent-based-framework-integrated-with-a-constraint-based-metabolic-network-model-of-cancer-for-simulating-avascular-tumor-growth
#15
Mehrdad Ghadiri, Mahshid Heidari, Sayed-Amir Marashi, Seyed Hasan Mousavi
In recent years, many efforts have been made in the field of computational modeling of cancerous tumors, in order to obtain a better understanding and predictions of their growth patterns. Furthermore, constraint-based modeling of metabolic networks has become increasingly popular, which is appropriate for the systems-level reconstruction of cell physiology. The goal of the current study is to integrate a multiscale agent-based modeling framework with a constraint-based metabolic network model of cancer cells in order to simulate the three dimensional early growth of avascular tumors...
July 24, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28737752/mechanical-strain-sensing-implicated-in-cell-shape-recovery-in-escherichia-coli
#16
Felix Wong, Lars D Renner, Gizem Özbaykal, Jayson Paulose, Douglas B Weibel, Sven van Teeffelen, Ariel Amir
The shapes of most bacteria are imparted by the structures of their peptidoglycan cell walls, which are determined by many dynamic processes that can be described on various length scales ranging from short-range glycan insertions to cellular-scale elasticity(1-11). Understanding the mechanisms that maintain stable, rod-like morphologies in certain bacteria has proved to be challenging due to an incomplete understanding of the feedback between growth and the elastic and geometric properties of the cell wall(3,4,12-14)...
July 24, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28737685/microcystin-prevalence-throughout-lentic-waterbodies-in-coastal-southern-california
#17
Meredith D A Howard, Carey Nagoda, Raphael M Kudela, Kendra Hayashi, Avery Tatters, David A Caron, Lilian Busse, Jeff Brown, Martha Sutula, Eric D Stein
Toxin producing cyanobacterial blooms have increased globally in recent decades in both frequency and intensity. Despite the recognition of this growing risk, the extent and magnitude of cyanobacterial blooms and cyanotoxin prevalence is poorly characterized in the heavily populated region of southern California. Recent assessments of lentic waterbodies (depressional wetlands, lakes, reservoirs and coastal lagoons) determined the prevalence of microcystins and, in some cases, additional cyanotoxins. Microcystins were present in all waterbody types surveyed although toxin concentrations were generally low across most habitats, as only a small number of sites exceeded California's recreational health thresholds for acute toxicity...
July 22, 2017: Toxins
https://www.readbyqxmd.com/read/28737667/prenatal-vitamin-d-intake-cord-blood-25-hydroxyvitamin-d-and-offspring-body-composition-the-healthy-start-study
#18
Katherine A Sauder, Hallie J Koeppen, Allison L B Shapiro, Kathryn E Kalata, Alexandra V Stamatoiu, Brandy M Ringham, Deborah H Glueck, Jill M Norris, Dana Dabelea
Vitamin D deficiency in pregnancy may be associated with increased offspring adiposity, but evidence from human studies is inconclusive. We examined associations between prenatal vitamin D intake, 25-hydroxyvitamin D (25(OH)D) in cord blood, and offspring size and body composition at birth and 5 months. Participants included 605 mother-offspring dyads from the Healthy Start study, an ongoing, pre-birth prospective cohort study in Denver, Colorado, USA. Prenatal vitamin D intake was assessed with diet recalls and questionnaires, and offspring body composition was measured via air displacement plethysmography at birth and 5 months...
July 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28737553/complications-after-body-contouring-surgery-in-postbariatric-patients
#19
Alejandra García Botero, Miguel García Wenninger, Dario Fernández Loaiza
INTRODUCTION: Over recent years, body contouring procedures in postbariatric patients have been in exponentially growing demand resulting in high complication rates rendering a variety of ciphers in the literature. OBJECTIVE: The purpose of this study is to determine the complication rate in patients who have undergone body contouring surgery after bariatric surgery between June 2012 and March 2015 at Hospital de San José. METHODS: A cohort study including 153 individuals who underwent a total of 198 body contouring procedures after massive weight loss following bariatric surgery was conducted...
July 22, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28737499/tunable-indirect-direct-transition-of-few-layer-snse-via-interface-engineering
#20
Hansika Iroshini Sirikumara, Thushari Jayasekera
Tin Selenide (SnSe) is one of the best thermoelectric materials reported to date. The possibility of growing few-layer SnSe helped boost the interest in this long-known, earth abundant material. Pristine SnSe in bulk, mono- and few-layer forms are reported to have indirect electronic bandgaps. Possible indirect-direct transition in SnSe is attractive for its optoelectronic-related applications. Based on the results from first principles Density Functional Theory (DFT) calculations, we carefully analyzed electronic band structures of bulk, and bilayer SnSe with various interlayer stackings...
July 24, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
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