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https://www.readbyqxmd.com/read/28343280/relationships-between-work-related-factors-and-musculoskeletal-health-with-current-and-future-work-ability-among-male-workers
#1
J S Boschman, A Noor, R Lundström, T Nilsson, J K Sluiter, M Hagberg
PURPOSE: The purpose was to increase job-specific knowledge about individual and work-related factors and their relationship with current and future work ability (WA). We studied cross-sectional relationships between mental demands, physical exertion during work, grip strength, musculoskeletal pain in the upper extremities and WA and the relationships between these variables and WA 11 years later. METHODS: We used a dataset of a prospective cohort study (1997-2008) among employees of an engineering plant (n = 157)...
March 25, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28343017/%C3%AE-lactoglobulin-an-efficient-nanocarrier-for-advanced-delivery-systems
#2
REVIEW
Zahra Shafaei, Behafarid Ghalandari, Akbar Vaseghi, Adeleh Divsalar, Thomas Haertlé, Ali Akbar Saboury, Lindsay Sawyer
Thanks to the progress of nanotechnology there are several agent-delivery systems that can be selected to achieve rapid and specific delivery of a wide variety of biologically active agents. Consequently, the manipulation and engineering of biopolymers has become one of the most exciting subjects for those who study delivery systems on the nano-scale. In this regard, both nanoparticle formation and a carrier role have been observed in the case of the globular milk whey protein, β-lactoglobulin (β-LG), setting it apart from many other proteins...
March 22, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28342941/is-there-any-crosstalk-between-the-chemotaxis-and-virulence-induction-signaling-in-agrobacterium-tumefaciens
#3
REVIEW
Minliang Guo, Zhiwei Huang, Jing Yang
Agrobacterium tumefaciens, a soil-born phytopathogenic bacterium, is well known as a nature's engineer due to its ability to genetically transform the host by transferring a DNA fragment (called T-DNA) from its Ti plasmid to host-cell genome. To combat the harsh soil environment and seek the appropriate host, A. tumefaciens can sense and be attracted by a large number of chemical compounds released by wounded host. As a member of α-proteobacterium, A. tumefaciens has a chemotaxis system different from that found in Escherichia coli, since many chemoattractants for A...
March 23, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/28342712/therapeutic-targets-in-the-selective-killing-of-cancer-cells-by-nanomaterials
#4
REVIEW
Mohd Javed Akhtar, Maqusood Ahamed, Hisham A Alhadlaq
Cancer is the result of numerous defects in key regulatory proteins and pathways, and targeting them with anticancer agents is associated with severe systemic toxicity. Increased levels of reactive oxygen species (ROS) and compensatory antioxidant levels in cancer cells have emerged as broad spectrum targets for therapeutic interventions. The biochemical features of cancer provide multiple but overlapping opportunities that could be efficiently exploited by the optimally engineered particulate characteristics of nanomaterials (NMs)...
March 22, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28342590/a-life-cycle-assessment-of-distributed-energy-production-from-organic-waste-two-case-studies-in-europe
#5
Sara Evangelisti, Roland Clift, Carla Tagliaferri, Paola Lettieri
By means of the life cycle assessment methodology, the purpose of this study is to assess the environmental impact when biomethane from organic waste produced at residential level is used to supply energy to a group of dwellings in the distributed generation paradigm. Three different Combined Heat and Power systems, such as fuel cells, Stirling engine and micro gas turbine, installed at household level are assessed in two different settings: one in Northern Europe (UK) and one in Southern Europe (Italy). Different operating strategies are investigated for each technology...
March 22, 2017: Waste Management
https://www.readbyqxmd.com/read/28340002/overexpression-of-the-rice-sumo-e3-ligase-gene-ossiz1-in-cotton-enhances-drought-and-heat-tolerance-and-substantially-improves-fiber-yields-in-the-field-under-reduced-irrigation-and-rainfed-conditions
#6
Neelam Mishra, Li Sun, Xunlu Zhu, Jennifer Smith, Anurag Prakash Srivastava, Xiaojie Yang, Necla Pehlivan, Nardana Esmaeili, Hong Luo, Guoxin Shen, Don Jones, Dick Auld, John Burke, Paxton Payton, Hong Zhang
The Arabidopsis SUMO E3 ligase gene AtSIZ1 plays important roles in plant response to abiotic stresses as loss of function in AtSIZ1 leads to increased sensitivity to drought, heat and salt stresses. Overexpression of the AtSIZ1 rice homolog, OsSIZ1, leads to increased heat and drought tolerance in bentgrass, suggesting that the function of the E3 ligase SIZ1 is highly conserved in plants and it plays a critical role in abiotic stress responses. To test the possibility that the SUMO E3 ligase could be used to engineer drought- and heat-tolerant crops, the rice gene OsSIZ1 was overexpressed in cotton...
March 1, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28339747/deep-learning-for-pharmacovigilance-recurrent-neural-network-architectures-for-labeling-adverse-drug-reactions-in-twitter-posts
#7
Anne Cocos, Alexander G Fiks, Aaron J Masino
Objective: Social media is an important pharmacovigilance data source for adverse drug reaction (ADR) identification. Human review of social media data is infeasible due to data quantity, thus natural language processing techniques are necessary. Social media includes informal vocabulary and irregular grammar, which challenge natural language processing methods. Our objective is to develop a scalable, deep-learning approach that exceeds state-of-the-art ADR detection performance in social media...
February 22, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28339690/automated-classification-of-eligibility-criteria-in-clinical-trials-to-facilitate-patient-trial-matching-for-specific-patient-populations
#8
Kevin Zhang, Dina Demner-Fushman
Objective: To develop automated classification methods for eligibility criteria in ClinicalTrials.gov to facilitate patient-trial matching for specific populations such as persons living with HIV or pregnant women. Materials and Methods: We annotated 891 interventional cancer trials from ClinicalTrials.gov based on their eligibility for human immunodeficiency virus (HIV)-positive patients using their eligibility criteria. These annotations were used to develop classifiers based on regular expressions and machine learning (ML)...
February 19, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28339228/universal-work-fluctuations-during-shortcuts-to-adiabaticity-by-counterdiabatic-driving
#9
Ken Funo, Jing-Ning Zhang, Cyril Chatou, Kihwan Kim, Masahito Ueda, Adolfo Del Campo
Counterdiabatic driving (CD) exploits auxiliary control fields to tailor the nonequilibrium dynamics of a quantum system, making possible the suppression of dissipated work in finite-time thermodynamics and the engineering of optimal thermal machines with no friction. We show that while the mean work done by the auxiliary controls vanishes, CD leads to a broadening of the work distribution. We derive a fundamental inequality that relates nonequilibrium work fluctuations to the operation time and quantifies the thermodynamic cost of CD in both critical and noncritical systems...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28339192/a-novel-exposure-system-termed-navetta-for-in-vitro-laminar-flow-electrodeposition-of-nanoaerosol-and-evaluation-of-immune-effects-in-human-lung-reporter-cells
#10
Evelien Frijns, Sandra Verstraelen, Linda Corinna Stoehr, Jo van Laer, An Jacobs, Jan Peters, Kristof Tirez, Matthew Boyles, Mark Geppert, Pierre Madl, Inge Nelissen, Albert Duschl, Martin Himly
A new prototype air-liquid interface (ALI) exposure system, a flatbed aerosol exposure chamber termed NAVETTA, was developed to investigate deposition of engineered nanoparticles (NPs) on cultured human lung A549 cells directly from the gas phase. This device mimics human lung cell exposure to NPs due to a low horizontal gas flow combined with cells exposed at the ALI. Electrostatic field assistance is applied to improve NP deposition efficiency. As proof-of-principle, cell viability and immune responses after short-term exposure to nano-copper oxide (CuO)-aerosol were determined...
March 24, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28338936/establishment-of-a-human-hepatocellular-cell-line-capable-of-maintaining-long-term-replication-of-hepatitis-b-virus
#11
Wan-Ling Yao, Sotaro Ikeda, Yuta Tsukamoto, Keiko Shindo, Yukie Otakaki, Main Qin, Yoshikazu Iwasawa, Fumihiko Takeuchi, Yuki Kaname, Yu-Chi Chou, Chungming Chang, Koichi Watashi, Takaji Wakita, Takeshi Noda, Hiroki Kato, Takashi Fujita
Hepatitis B virus is a virus whose replication cycle cannot be completely reproduced using cultured cell lines. Here, we report an engineered cell line capable of supporting the complete HBV life cycle. We generated HepG2 cells overexpressing HBV entry receptor human NTCP, and defective in RIG-I-like receptor signaling, by knocking down the IPS-1 adaptor molecule. The resultant NtG20.i7 cells were susceptible to HBV, and its replication was detectable at 14 days post-infection and persisted for at least 35 days with a gradual increase of HBc expression...
March 11, 2017: International Immunology
https://www.readbyqxmd.com/read/28338924/a-nonsynonymous-snp-catalog-of-mycobacterium-tuberculosis-virulence-genes-and-its-use-for-detecting-new-potentially-virulent-sublineages
#12
N E Mikheecheva, M V Zaychikova, A V Melerzanov, V N Danilenko
Mycobacterium tuberculosis is divided into several distinct lineages, and various genetic markers such as IS-elements, VNTR, and SNPs are used for lineage identification. We propose an M. tuberculosis classification approach based on functional polymorphisms in virulence genes. An M. tuberculosis virulence genes catalog has been established, including 319 genes from various protein groups, such as proteases, cell wall proteins, fatty acid and lipid metabolism proteins, sigma factors, toxin-antitoxin systems...
March 11, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28338782/source-sink-interaction-a-century-old-concept-under-the-light-of-modern-molecular-systems-biology
#13
Tian-Gen Chang, Xin-Guang Zhu
Many approaches to engineer source strength have been proposed to enhance crop yield potential. However, a well-co-ordinated source-sink relationship is required finally to realize the promised increase in crop yield potential in the farmer's field. Source-sink interaction has been intensively studied for decades, and a vast amount of knowledge about the interaction in different crops and under different environments has been accumulated. In this review, we first introduce the basic concepts of source, sink and their interactions, then summarize current understanding of how source and sink can be manipulated through both environmental control and genetic manipulations...
February 17, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28338413/human-tissue-engineered-skeletal-muscle-myobundles-to-measure-oxygen-uptake-and-assess-mitochondrial-toxicity
#14
Brittany N J Davis, Jeffrey W Santoso, Michaela J Walker, Cindy S Cheng, Timothy R Koves, William E Kraus, George A Truskey
Mitochondrial dysfunction is responsible for the toxicity of a number of drugs. Current isolated mitochondria or cellular monoculture mitochondrial respiration measurement systems lack physiological relevance. Using a tissue engineering rather than cell- or mitochondria-based approach enables a more physiologically relevant detection of drug-induced mitochondrial impairment. To probe oxygen consumption and mitochondrial health, we assayed the bioenergetic profile of engineered three-dimensional human skeletal muscle myobundles derived from primary myoblasts...
March 24, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28338143/mastering-the-non-equilibrium-assembly-and-operation-of-molecular-machines
#15
Cristian Pezzato, Chuyang Cheng, J Fraser Stoddart, R Dean Astumian
In mechanically interlocked compounds, such as rotaxanes and catenanes, the molecules are held together by mechanical rather than chemical bonds. These compounds can be engineered to have several well-defined mechanical states by incorporating recognition sites between the different components. The rates of the transitions between the recognition sites can be controlled by introducing steric "speed bumps" or electrostatically switchable gates. A mechanism for the absorption of energy can also be included by adding photoactive, catalytically active, or redox-active recognition sites, or even charges and dipoles...
March 24, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28338055/fully-printable-strain-engineered-electronic-wrap-for-customizable-soft-electronics
#16
Junghwan Byun, Byeongmoon Lee, Eunho Oh, Hyunjong Kim, Sangwoo Kim, Seunghwan Lee, Yongtaek Hong
Rapid growth of stretchable electronics stimulates broad uses in multidisciplinary fields as well as industrial applications. However, existing technologies are unsuitable for implementing versatile applications involving adaptable system design and functions in a cost/time-effective way because of vacuum-conditioned, lithographically-predefined processes. Here, we present a methodology for a fully printable, strain-engineered electronic wrap as a universal strategy which makes it more feasible to implement various stretchable electronic systems with customizable layouts and functions...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28338003/directional-phonon-suppression-function-as-a-tool-for-the-identification-of-ultralow-thermal-conductivity-materials
#17
Giuseppe Romano, Alexie M Kolpak
Boundary-engineering in nanostructures has the potential to dramatically impact the development of materials for high- efficiency conversion of thermal energy directly into electricity. In particular, nanostructuring of semiconductors can lead to strong suppression of heat transport with little degradation of electrical conductivity. Although this combination of material properties is promising for thermoelectric materials, it remains largely unexplored. In this work, we introduce a novel concept, the directional phonon suppression function, to unravel boundary-dominated heat transport in unprecedented detail...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28338000/cavity-filling-mutations-at-the-thyroxine-binding-site-dramatically-increase-transthyretin-stability-and-prevent-its-aggregation
#18
Ricardo Sant'Anna, Maria Rosário Almeida, Nathalia Varejāo, Pablo Gallego, Sebastian Esperante, Priscila Ferreira, Alda Pereira-Henriques, Fernando L Palhano, Mamede de Carvalho, Debora Foguel, David Reverter, Maria João Saraiva, Salvador Ventura
More than a hundred different Transthyretin (TTR) mutations are associated with fatal systemic amyloidoses. They destabilize the protein tetrameric structure and promote the extracellular deposition of TTR as pathological amyloid fibrils. So far, only mutations R104H and T119M have been shown to stabilize significantly TTR, acting as disease suppressors. We describe a novel A108V non-pathogenic mutation found in a Portuguese subject. This variant is more stable than wild type TTR both in vitro and in human plasma, a feature that prevents its aggregation...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337710/high-efficient-n-butanol-production-by-co-culturing-clostridium-acetobutylicum-and-saccharomyces-cerevisiae-integrated-with-butyrate-fermentative-supernatant-addition
#19
Hongzhen Luo, Qingwei Zeng, Shuo Han, Zhaoyu Wang, Qing Dong, Yanhong Bi, Yuping Zhao
Butanol is not only an important chemical intermediate and solvent in pharmaceutical and cosmetics industries, but also considered as an advanced biofuel. Although species of the natural host Clostridium have been engineered, butanol titers in the anaerobe seem to be limited by its intolerance to butanol less than 13 g/L. Here we aimed to develop a technology for enhancing butanol production by a co-culture system with butyrate fermentative supernatant addition. First, when adding 4.0 g/L butyrate into the acetone-butanol-ethanol (ABE) fermentation broth with single-shot at 24 h, the "acid crash" phenomenon occurred and the ABE fermentation performance deteriorated...
April 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28337675/an-ontology-based-search-engine-for-digital-reconstructions-of-neuronal-morphology
#20
Sridevi Polavaram, Giorgio A Ascoli
Neuronal morphology is extremely diverse across and within animal species, developmental stages, brain regions, and cell types. This diversity is functionally important because neuronal structure strongly affects synaptic integration, spiking dynamics, and network connectivity. Digital reconstructions of axonal and dendritic arbors are thus essential to quantify and model information processing in the nervous system. NeuroMorpho.Org is an established repository containing tens of thousands of digitally reconstructed neurons shared by several hundred laboratories worldwide...
March 23, 2017: Brain Informatics
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