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Mayra C Vidal, Sebastián F Sendoya, Lydia F Yamaguchi, Massuo J Kato, Rafael S Oliveira, Paulo S Oliveira
Sit-and-wait predators use different strategies to encounter potential prey. Rhinoleucophenga myrmecophaga Vidal et (Vidal et Vilela; Diptera: Drosophilidae) larvae build sticky shelters on top of extrafloral nectaries (EFNs) of Qualea grandiflora Mart (Vochysiaceae), a common plant in the Brazilian cerrado savanna. Although larval shelters block the EFNs, nectar production is not obstructed and is used by the larvae to attract and trap nectar-gathering ants that are eventually eaten by the dipteran. Here we describe the natural history of R...
July 11, 2018: Environmental Entomology
Kevin D Chase, Lloyd D Stringer, Ruth C Butler, Andrew M Liebhold, Daniel R Miller, Peter W Shearer, Eckehard G Brockerhoff
Invasions by insects introduced via international trade continue to cause worldwide impacts. Surveillance programs using traps baited with host volatiles and pheromones can detect incursions of nonnative species. We report on two experiments executed to determine if attractants for several insect species can be combined without compromising trap catches and detection ability of target species. In the first experiment, we tested the effect of bark beetle pheromones (plus α-pinene) and trap contact with foliage on trap catches of the brown marmorated stink bug Halyomorpha halys Stål (Hemiptera: Pentatomidae) in traps baited with a mixture of bisabolenes and methyl (E,E,Z)-2,4,6-decatrienoate...
July 11, 2018: Journal of Economic Entomology
Soheila Asadzadeh-Khaneghah, Aziz Habibi-Yangjeh, Kazuya Nakata
The aim of this work is the fabrication of very efficient visible-light-driven photocatalysts through anchoring carbon dots and BiOBr over nanosheets of graphitic carbon nitride. Hence, a series of g-C3 N4 nanosheets/Carbon dots/BiOBr (denoted as CNNS/CDs/BiOBr) nanocomposites with different amounts of BiOBr were synthesized by refluxing route. The resultant photocatalysts were characterized by XRD, EDX, SEM, TEM, HRTEM, AFM, XPS, FT-IR, UV-vis DRS, TGA, BET, and PL instruments. Among the photocatalysts, the CNNS/CDs/BiOBr (20%) nanocomposite exhibited the highest photocatalytic performance for degradations of RhB, MB, and MO under visible light, which is about 129, 29...
July 9, 2018: Journal of Colloid and Interface Science
Donglin He, Xiaojuan Wu, Yanfeng Chen, Yue Situ, Li Zhong, Hong Huang
γ-FeOOH was grown in situ on the surface of rod Bi2 O3 to construct a perfect cycle coupling photocatalysis and heterogeneous Fenton-like process. The degradation efficiency of this system was detected under the irradiation of visible light. γ-FeOOH/Bi2 O3 showed better degradation efficiency than pure Bi2 O3 and γ-FeOOH, and the amount of TOC was decreased to 4.3, suggesting that the system exhibits outstanding oxidation ability that MO and phenol could be degraded to CO2 and H2 O totally. PL spectra, trapping experiments and ESR test were also carried out to confirm the mechanism of photocatalysis with heterogeneous Fenton-like process, and the suitable conduction band (CB) of Bi2 O3 matches the electric potential of iron ions was proved to be the key to keep the perfect cycle...
June 26, 2018: Chemosphere
Marcel Sauvalle, Andrés Alvo
BACKGROUND: The respiratory epithelium is mainly constituted by caliciform (produces mucus, responsible of keeping moisture and trapping particles) and ciliated cells (transports mucus into the pharynx, by the movement of multiple cilia). For centuries, nasal lavages have been used for different rhinosinusal conditions. Some studies suggest not only a direct effect on the mobilisation of secretions, but also an improvement in mucociliary clearance rates. To our knowledge, the impact of temperature in nasal lavages has been scarcely studied...
July 13, 2018: European Archives of Oto-rhino-laryngology
Akira Ozawa, Josue Davila-Rodriguez, Theodor W Hänsch, Thomas Udem
The quantum Zeno effect (QZE) is not only interesting as a manifestation of the counterintuitive behavior of quantum mechanics, but may also have practical applications. When a spectroscopy laser is applied to target atoms or ions prepared in an initial state, the Rabi flopping of an auxiliary transition sharing one common level can be inhibited. This effect is found to be strongly dependent on the detuning of the spectroscopy laser and offers a sensitive spectroscopy signal which allows for high precision spectroscopy of transitions with a small excitation rate...
July 13, 2018: Scientific Reports
Tanja Vajen, Rory R Koenen, Isabella Werner, Mareike Staudt, Delia Projahn, Adelina Curaj, Tolga Taha Sönmez, Sakine Simsekyilmaz, David Schumacher, Julia Möllmann, Tilman M Hackeng, Philipp von Hundelshausen, Christian Weber, Elisa A Liehn
Myocardial infarction (MI) is a major cause of death in Western countries and finding new strategies for its prevention and treatment is thus of high priority. In a previous study, we have demonstrated a pathophysiologic relevance for the heterophilic interaction of CCL5 and CXCL4 in the progression of atherosclerosis. A specifically designed compound (MKEY) to block this CCL5-CXCR4 interaction is investigated as a potential therapeutic in a model of myocardial ischemia/reperfusion (I/R) damage. 8 week-old male C57BL/6 mice were intravenously treated with MKEY or scrambled control (sMKEY) from 1 day before, until up to 7 days after I/R...
July 13, 2018: Scientific Reports
Daniel A Sanchez, Zhaohe Dai, Peng Wang, Arturo Cantu-Chavez, Christopher J Brennan, Rui Huang, Nanshu Lu
Layered systems of 2D crystals and heterostructures are widely explored for new physics and devices. In many cases, monolayer or few-layer 2D crystals are transferred to a target substrate including other 2D crystals, and nanometer-scale blisters form spontaneously between the 2D crystal and its substrate. Such nanoblisters are often recognized as an indicator of good adhesion, but there is no consensus on the contents inside the blisters. While gas-filled blisters have been modeled and measured by bulge tests, applying such models to spontaneously formed nanoblisters yielded unrealistically low adhesion energy values between the 2D crystal and its substrate...
July 13, 2018: Proceedings of the National Academy of Sciences of the United States of America
(no author information available yet)
Mutations in RNASEH2B impair ribonucleotide excision repair to confer PARP inhibitor sensitivity.
July 13, 2018: Cancer Discovery
María C Maldifassi, Carolina Martín-Sánchez, Gema Atienza, José L Cedillo, Francisco Arnalich, Anna Bordas, Francisco Zafra, Cecilio Giménez, María Extremera, Jaime Renart, Carmen Montiel
The α7 nicotinic receptor subunit and its partially duplicated human-specific dupα7 isoform are co-expressed in neuronal and non-neuronal cells. In these cells, α7 subunits form homopentameric α7 nicotinic acetylcholine receptors (α7-nAChRs) implicated in numerous pathologies. In immune cells, α7-nAChRs are essential for vagal control of inflammatory response in sepsis. Recent studies show that the dupα7 subunit is a dominant-negative regulator of α7-nAChR activity in Xenopus oocytes. However, its biological significance in mammalian cells, particularly immune cells, remains unexplored, as the duplicated form is indistinguishable from the original subunit in standard tests...
July 13, 2018: Journal of Biological Chemistry
E Chepkorir, M Venter, J Lutomiah, F Mulwa, S Arum, D P Tchouassi, R Sang
INTRODUCTION: Yellow fever (YF) and dengue (DEN) viruses are important re-emerging mosquito-borne viruses sharing similar vectors and reservoirs. The last documented YF outbreak in Kenya occurred in 1992-95. However, YF virus is re-emerging in bordering countries including Uganda, Ethiopia and South Sudan with the potential for spread to the neighboring regions in Kenya. Dengue is endemic in Kenya with outbreaks being detected in various towns in the north and the coast. This study reports on the Aedes (Stegomyia) mosquito species occurrence, diversity, and blood feeding patterns, as means of measuring the risk of transmission of YF and DEN in Kacheliba sub-county, West Pokot County, which borders previous YF outbreak areas in eastern Uganda...
July 10, 2018: Acta Tropica
Augusto Vaglio, Peter C Grayson, Paride Fenaroli, Davide Gianfreda, Valeria Boccaletti, Gian Marco Ghiggeri, Gabriella Moroni
Drug-induced lupus (DIL) includes a spectrum of drug-induced reactions often characterised by a clinical phenotype similar to that of idiopathic systemic lupus eruthematosus (SLE) but usually lacking major SLE complications. Different drugs may be associated with distinct clinical and serological profiles, and early recognition is crucial. Drugs traditionally associated with DIL include procainamide, hydralazine, quinidine and others, but strong associations with newer agents, such as TNF α (TNFα) inhibitors, are increasingly recognised...
July 10, 2018: Autoimmunity Reviews
Narin Sontigun, Kabkaew L Sukontason, Tunwadee Klong-Klaew, Sangob Sanit, Chutharat Samerjai, Pradya Somboon, Sa-Nguansak Thanapornpoonpong, Jens Amendt, Kom Sukontason
BACKGROUND: Chrysomya megacephala is a blow fly species of medical and forensic importance worldwide. Understanding its bionomics is essential for both designing effective fly control programs and its use in forensic investigations. METHODS: The daily flight activity, seasonal abundance related to abiotic factors (temperature, relative humidity and rainfall) and reproductive potential of this species was investigated. Adult flies were sampled twice a month for one year from July 2013 to June 2014 in three different ecotypes (forest area, longan orchard and palm plantation) of Chiang Mai Province, northern Thailand, using semi-automatic funnel traps...
July 13, 2018: Parasites & Vectors
Ayodeji Olayemi, Akinlabi Oyeyiola, Adeoba Obadare, Joseph Igbokwe, Adetunji Samuel Adesina, Francis Onwe, Kingsley Nnanna Ukwaja, Nnennaya Anthony Ajayi, Toni Rieger, Stephan Günther, Elisabeth Fichet-Calvet
BACKGROUND: Lassa fever, killing thousands of people annually, is the most reported viral zoonotic disease in Nigeria. Recently, different rodent species carrying diverse lineages of the Lassa virus (LASV) in addition to a novel Mobala-like genetic sequence were detected within the country. Here, screening 906 small mammal specimens from 11 localities for IgG antibodies and incorporating previous PCR detection data involving the same populations, we further describe arenavirus prevalence across Nigeria in relation to host species and geographical location...
July 13, 2018: Parasites & Vectors
Yuki Maruchi, Masanobu Tsuda, Hisatake Mori, Nobuyoshi Takenaka, Takayoshi Gocho, Muhammad A Huq, Naoshi Takeyama
BACKGROUND: Recent studies have suggested that excessive formation of neutrophil extracellular traps (NETs) plays a critical role in the pathogenesis of sepsis. Although elevation of the plasma level of cell-free DNA (cf-DNA) has been reported in sepsis patients, there has been little direct measurement of circulating free NETs such as myeloperoxidase-conjugated DNA (MPO-DNA). The objectives of this study were to detect NETs in the bloodstream of patients with septic shock, and to assess the correlations of circulating NET levels with organ dysfunction, disease severity, and mortality...
July 13, 2018: Critical Care: the Official Journal of the Critical Care Forum
Norio Tanaka, Hajime Sato, Yoshiya Igarashi, Yuya Kimiwada, Hiroyuki Torita
The effectiveness of coastal forests to mitigate a tsunami has received increased attention. However, many trees are broken, overturned, or washed out in large tsunami events like the 2011 Great East Japan tsunami (GEJT). For quantitatively estimating the advantages and disadvantages of a coastal forest, it is important to reproduce the forest breakage, especially paying attention to the production of driftwood and the trapping ability of standing trees. The objective of this study was to analyze the tree-breaking mode in detail, considering the stand structure of trees, to demonstrate an energy reduction even when trees are broken, and to utilize the information about the breaking pattern to design and manage a coastal forest properly...
July 10, 2018: Journal of Environmental Management
He Wang, Chenxi Zhou, Xiaolu Sun, Yannan Jian, Qingkun Kong, Kang Cui, Shenguang Ge, Jinghua Yu
A novel dual-mode cytosensor based on polyhedral AuPd alloy nanoparticles (PH-AuPd NPs) and three-dimentional reduced graphene oxide (3D-rGO) was constructed for highly sensitive detection of MCF-7 cells. The 3D-rGO was in situ synthesized on the paper working electrode (PWE) by a pollution-free hydrothermal method, increasing the specific surface area and further facilitating the modification of Au nanoparticles (AuNPs). After modified with AuNPs, the Au@ 3D-rGO/PWE was then functionalized by aptamer H1 to trap MCF-7 cells...
July 4, 2018: Biosensors & Bioelectronics
A Ramzi, T R Gireeshkumar, K Habeeb Rahman, Mohan Manu, K K Balachandran, Jacob Chacko, N Chandramohanakumar
Phthalic acid esters (PAEs) are a group of endocrine-disrupting chemicals listed as priority pollutants by United States Environmental Protection Agency (USEPA, 2009). This study provides baseline information on seasonal distribution and contamination status of six phthalic acid esters (∑6 PAEs) in sediments of a tropical estuary (Cochin-India). In general, the sediments accumulated more PAEs during the post monsoon (mean 2325 ngg-1 ; between 1402 and 3121 ngg-1 ) and monsoon (mean 1372 ngg-1 ; between 331 and 4015 ngg-1 ) periods indicating land run off as the major transport pathway...
July 2, 2018: Chemosphere
Attila J Trájer
Mosquitoes can be of importance in forensic context as a source of the perpretator's DNA. The aim of this study was to find how can we optimize the selection of appropriate mosquito individuals. The study was based on the data of 177833 trapped female mosquitoes and 105236 individuals which were collected directly from human skin. The mean human-specific biting willingness value of Aedes species was the highest (mean: 0.8). Significant differences were found between the human-specific biting willingness value variances of Aedes and Culex (p=0...
July 7, 2018: Journal of Forensic and Legal Medicine
Li-Fang Hsu, Meng-Huan Tsai, Bei-En Chang, Yi-Jane Chen, Chung-Chen Jane Yao
OBJECTIVE: During orthodontic tooth movement (OTM), the speed of movement depends on the rate of bone turnover. In this study, we used a rat model to investigate the effect of 970 nm low-level laser therapy (LLLT) on OTM under different dose and frequency protocols. METHODS: We first compared the OTM rates between the OTM only control and the OTM + LLLT group (1250 J/cm2 ) in Experiment 1 and showed that LLLT significantly increased OTM. In Experiment 2, we employed 3 different LLLT protocols: the low-dose group and the high-dose group receiving 5 doses of 750 J/cm2 and 15,000 J/cm2 of LLLT every 3 days, respectively, and the early high-dose group which received 5 daily doses at 15,000 J/cm2 at the beginning of the experiments...
July 10, 2018: Journal of Photochemistry and Photobiology. B, Biology
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