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Maruška Budič, Blaž Cigić, Maja Šoštarič, Jerica Sabotič, Vladimir Meglič, Janko Kos, Marjetka Kidrič
Aminopeptidases, together with other proteases, execute and regulate the total and specifically limited protein breakdown involved in plant physiology, raising the possibility of their involvement in response to drought. We have identified, in leaves of Phaseolus vulgaris L., five aminopeptidases (E.C.3.4.11) whose levels of activity changed when three week old plants were subjected to drought. First, second and third trifoliate leaves were investigated separately. The aminopeptidases were first identified then isolated using ion exchange chromatography of leaf extracts...
October 13, 2016: Plant Physiology and Biochemistry: PPB
Ling Fu, Tao Huang, Shuo Wang, Xiaohong Wang, Limin Su, Chao Li, Yuanhui Zhao
Although modes of action (MOAs) play a key role in the understanding of the toxic mechanism of chemicals, the MOAs have not been investigated for antibiotics to green algae. This paper is to discriminate excess toxicity from baseline level and investigate the MOAs of 13 different antibiotics to algae by using the determined toxicity values. Comparison of the toxicities shows that the inhibitors of protein synthesis to bacteria, such as azithromycin, doxycycline, florfenicol and oxytetracycline, exhibit significantly toxic effects to algae...
October 23, 2016: Chemosphere
S Rossini-Oliva, M D Mingorance, A Peña
The effect of the addition (0-10%) of two types of sewage sludge composts (composted sewage sludge [CS] and sewage sludge co-composted with olive prune wastes [CSO]) on a polymetallic acidic soil from the Riotinto mining area was evaluated by i) a soil incubation experiment and ii) a greenhouse pot experiment using tomato (Solanum lycopersicum Mill.), ryegrass (Lolium perenne L.) and ahipa (Pachyrhizus ahipa (Wedd.) Parodi). Compost addition improved the soil organic carbon content, increased the pH and the electrical conductivity and enhanced enzyme activities and soil respiration, more for CSO than for CS...
October 23, 2016: Chemosphere
F Pelin Kinik, Cigdem Altintas, Volkan Balci, Burak Koyuturk, Alper Uzun, Seda Keskin
Experiments were combined with atomically-detailed simulations and density functional theory (DFT) calculations to understand the effect of incorporation of an ionic liquid (IL), 1-n-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]), into a metal organic framework (MOF with a zeolitic imidazolate framework), ZIF-8, on the CO2 separation performance. The interactions between [BMIM][PF6] and ZIF-8 were examined in deep detail and their consequences on CO2/CH4, CO2/N2, and CH4/N2 separation have been elucidated by using experimental measurements complemented by DFT calculations and atomically-detailed simulations...
October 26, 2016: ACS Applied Materials & Interfaces
Deborah Carvalho Malta, Sheila Rizzato Stopa, Rogerio Canuto, Nayara Lopes Gomes, Vera Lúcia Ferreira Mendes, Bárbara Niegia Garcia de Goulart, Lenildo de Moura
Objective: To describe the self-reported prevalence of intellectual disability, physical, hearing and visual, according to sociodemographic variables, degree of limitation and frequency of rehabilitation service use. Methods: Data from the National Health Survey, a population survey. the self-reported prevalence of physical, mental, visual and hearing were calculated and their 95% confidence intervals, stratified by sex, age, race / color, for Brazil, place of residence and Major Regions...
October 2016: Ciência & Saúde Coletiva
Xanthi D Andrianou, Stephanie Gängler, Andra Piciu, Pantelis Charisiadis, Christina Zira, Kyriacos Aristidou, Doina Piciu, Russ Hauser, Konstantinos C Makris
Although the increasing prevalence of thyroid nodular disease (TND) has been partially attributed to the more frequent usage of improved diagnostics, environmental factors, such as exposures to thyroid-disrupting chemicals may contribute to TND and altered thyroid function. We investigated the association between exposures to bisphenol A (BPA), its chlorinated derivatives (ClxBPA), and bisphenol F (BPF) with TND and thyroid measures in adult women. A case-control study in Cyprus and Romania (n = 212) was conducted, where cases were those with thyroid nodules (diameter >3mm), and controls without nodules...
2016: PloS One
Douglas Matsunaga, Parameswaran G Sreekumar, Keijiro Ishikawa, Hiroto Terasaki, Ernesto Barron, Pinchas Cohen, Ram Kannan, David R Hinton
Humanin (HN) is a small mitochondrial-encoded peptide with neuroprotective properties. We have recently shown protection of retinal pigmented epithelium (RPE) cells by HN in oxidative stress; however, the effect of HN on endoplasmic reticulum (ER) stress has not been evaluated in any cell type. Our aim here was to study the effect of HN on ER stress-induced apoptosis in RPE cells with a specific focus on ER-mitochondrial cross-talk. Dose dependent effects of ER stressors (tunicamycin (TM), brefeldin A, and thapsigargin) were studied after 12 hr of treatment in confluent primary human RPE cells with or without 12 hr of HN pretreatment (1-20 μg/mL)...
2016: PloS One
Séverine Deguen, Wahida Kihal, Maxime Jeanjean, Cindy Padilla, Denis Zmirou-Navier
BACKGROUND: We conducted this systematic review and meta-analysis to address the open question of a possible association between the socioeconomic level of the neighborhoods in which pregnant women live and the risk of Congenital Heart Defects (CHDs), Neural Tube Defects (NTDs) and OroFacial Clefts (OFCs). METHODS: We searched MEDLINE from its inception to December 20th, 2015 for case-control, cohort and ecological studies assessing the association between neighborhood socioeconomic level and the risk of CHDs, NTDs and the specific phenotypes Cleft Lip with or without Cleft Palate (CLP) and Cleft Palate (CP)...
2016: PloS One
Zhida Zheng, Xiaocha Wang, Wenbo Mi
The strain and electric-field effects on the electronic structure of MoTe2/WTe2 van der Waals heterostructures are investigated by first-principles calculations. The MoTe2/WTe2 heterostructures are indirect band gap semiconductors under different strains except for 2%. At a strain from  -6% to 6% under a zero electric field, the band gap is 0.56, 0.62, 0.69, 0.62, 0.46, 0.37 and 0.29 eV, respectively. Meanwhile, spin splitting at the conduction band minimum (CBM) decreases monotonically from 76-1 meV, and that at the valance band maximum (VBM) is 232, 266, 292, 307, 319, 302 and 283 meV...
October 26, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Tejas A Shastry, Itamar Balla, Hadallia Bergeron, Samuel H Amsterdam, Tobin J Marks, Mark C Hersam
Two-dimensional transition metal dichalcogenides (TMDCs) have recently attracted attention due to their superlative optical and electronic properties. In particular, their extraordinary optical absorption and semiconducting bandgap have enabled demonstrations of photovoltaic response from heterostructures comprised of TMDCs and other organic or inorganic materials. However, these early studies were limited to devices at the micron-scale and/or failed to exploit the unique optical absorption properties of single-layer TMDCs...
October 26, 2016: ACS Nano
Eileen K Jaffe
Porphobilinogen synthase (PBGS), also known as 5-aminolevulinate dehydratase, is an essential enzyme in the biosynthesis of all tetrapyrroles, which function in respiration, photosynthesis, and methanogenesis. Throughout evolution, PBGS adapted to a diversity of cellular niches and evolved to use an unusual variety of metal ions both for catalytic function and to control protein multimerization. With regard to the active site, some PBGSs require Zn(2+); a subset of those, including human PBGS, contain a constellation of cysteine residues that acts as a sink for the environmental toxin Pb(2+)...
October 26, 2016: Accounts of Chemical Research
Morten Beck Trelle, Shona H Pedersen, Eva Christina Østerlund, Jeppe Buur Madsen, Søren Risom Kristensen, Thomas J D Jørgensen
Antithrombin deficiency is associated with increased risk of venous thrombosis. In certain families this condition is caused by pathogenic polymerization of mutated antithrombin in the blood. To facilitate future development of pharmaceuticals against antithrombin polymerization an improved understanding of the polymerogenic intermediates is crucial. However, X-ray crystallography of these intermediates is severely hampered by the difficulty in obtaining well-diffracting crystals of transient and heterogeneous noncovalent protein assemblies...
October 26, 2016: Analytical Chemistry
Janosch Häberli, Philipp Henle, Yves P Acklin, Ivan Zderic, Boyko Gueorguiev
BACKGROUND: Dynamic augmentation of anterior cruciate ligament tears seems to reduce anteroposterior knee translation close to the pre-injury level. The aim of the present study is to biomechanically investigate the course of translation during a simulated early post-operative phase. It is hypothesized that anteroposterior translation is maintained at the immediate post-operative level over a simulated rehabilitation period of 50'000 gait cycles. METHODS: Eight fresh-frozen human cadaveric knee joints from donors with a mean age of 35...
December 2016: Journal of Experimental Orthopaedics
Estelle Jamard, Bertrand Volard, Audrey Emmanuelle Dugué, Angelina Legros, Alexandra Leconte, Bénédicte Clarisse, Grégoire Davy, Florence Polycarpe, Catherine Dugast, Caroline Abadie, Thierry Frebourg, Julie Tinat, Isabelle Tennevet, Valérie Layet, Florence Joly, Laurent Castéra, Pascaline Berthet, Dominique Vaur, Sophie Krieger
Germline allele specific expression (ASE), resulting in a lowered expression of one of the BRCA1 alleles, has been described as a possible predisposition marker in Hereditary Breast or Ovarian Cancer (HBOC), usable for molecular diagnosis in HBOC. The main objective of this prospective case-control study was to compare the proportion of ASE between controls without familial history of breast or ovarian cancer, and HBOC cases without BRCA1 or BRCA2 deleterious mutation. BRCA1 ASE evaluated on three SNPs among controls and HBOC patients without deleterious mutation were assessed by pyrosequencing...
October 25, 2016: Familial Cancer
Annabelle Cikankowitz, Anne Clavreul, Clément Tétaud, Laurent Lemaire, Audrey Rousseau, Nicolas Lepareur, Djamel Dabli, Francis Bouchet, Emmanuel Garcion, Philippe Menei, Olivier Couturier, François Hindré
Internal radiation strategies hold great promise for glioblastoma (GB) therapy. We previously developed a nanovectorized radiotherapy that consists of lipid nanocapsules loaded with a lipophilic complex of Rhenium-188 (LNC(188)Re-SSS). This approach resulted in an 83 % cure rate in the 9L rat glioma model, showing great promise. The efficacy of LNC(188)Re-SSS treatment was optimized through the induction of a T-cell immune response in this model, as it is highly immunogenic. However, this is not representative of the human situation where T-cell suppression is usually encountered in GB patients...
October 25, 2016: Journal of Neuro-oncology
Bingwen Qiu, Jiangping Zhong, Zhenghong Tang, Min Feng, Chongcheng Chen, Xiaoqin Wang
Plateau vegetation is considered to be highly sensitive to climate change, especially at higher altitudes. Although the Tibetan Plateau has experienced intensive warming over the past few decades, there is much contradictory evidence regarding its phenological variations and the impact of climatic change. In this study, we explored vegetation phenology through the inflexion point-based method with the weekly 0.05° EVI2 datasets from 1982 to 2010. We observed complex spatiotemporal variations in vegetation phenology on the higher Tibetan Plateau from three aspects...
October 26, 2016: International Journal of Biometeorology
Joseph A Ricci, Kayva Crawford, Olivia A Ho, Bernard T Lee, Ketan M Patel, Matthew L Iorio
BACKGROUND: Venous thromboembolism encompasses a spectrum of disease, ranging from asymptomatic deep vein thrombosis to fatal pulmonary embolism. As microsurgical techniques increase in complexity, the overriding benefit from a microsurgical versus a venous thromboembolism prophylactic regimen remains unclear. This study evaluated the current recommendations and procedure-specific strategies for venous thromboembolism prophylaxis with a focus on the utility of prophylaxis in microsurgical procedures...
November 2016: Plastic and Reconstructive Surgery
Young Bae Lee, Jaeho Han, Jeong Hyeon Cho, Hong Sub Lee
BACKGROUND/AIMS: Although surveillance endoscopy is recommended after the treatment of a benign gastric ulcer in Korea, improved survival, secondary to an endoscopic follow-up strategy, is controversial. Thus, the aim of this study was to understand the results of gastric ulcer surveillance endoscopy and to individualize surveillance endoscopy by analyzing known risk factors for gastric cancer. MATERIALS AND METHODS: In total, 599 (M:F=424:175, median age=55.4 years) patients who were diagnosed with a gastric ulcer and who underwent follow-up endoscopy between January 2003 and August 2014 were retrospectively enrolled in this study...
September 2016: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
Daniela M Santos, Laís V Lage, Eleonora K Jabur, Helena H S Kaziyama, Dan V Iosifescu, Mara Cristina S De Lucia, Renério Fráguas
OBJECTIVES: We developed this study to investigate the association of fibromyalgia with personality traits, controlling for depression and other potential confounders. METHODS: We assessed personality traits with the Cloninger's Temperament and Character Inventory (TCI) in 78 female patients with fibromyalgia and in a control group of 78 subjects without fibromyalgia. The Mini-International Neuropsychiatric Interview was used to assess depression and anxiety diagnoses...
October 20, 2016: Clinical and Experimental Rheumatology
Mélisande Albert, Yann Bouret, Magalie Fromont, Patricia Reynaud-Bouret
We investigate several distribution-free dependence detection procedures, all based on a shuffling of the trials, from a statistical point of view. The mathematical justification of such procedures lies in the bootstrap principle and its approximation properties. In particular, we show that such a shuffling has mainly to be done on centered quantities-that is, quantities with zero mean under independence-to construct correct p-values, meaning that the corresponding tests control their false positive (FP) rate...
November 2016: Neural Computation
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