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https://www.readbyqxmd.com/read/28813791/codification-mechanisms-of-wrist-position-sense
#1
Francesca Marini, Sara Contu, Pietro Morasso, Lorenzo Masia, Jacopo Zenzeri
Proprioceptive signals from cutaneous, joint, tendon and muscle receptors create the basis for bodily perception and are known to be essential for motor control. However, which are the mechanisms underlying the proprioceptive signals and which are the variables that affect them is still a matter of debate. In particular, what is worth to investigate is, namely, the codification of proprioceptive information related to pointing movements of the wrist towards kinesthetic targets. In this work we asked 10 healthy adults to perform with their wrist a robot-aided proprioceptive matching task, in which the starting position of the matching movements was shifted forward or backward, in order to ascertain to which extent such shifts cause target over/under estimation and how important is movement's length on task performance...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813634/hand-assisted-laparoscopic-surgery-versus-conventional-laparoscopic-surgery-for-colorectal-cancer-a-systematic-review-and-meta-analysis
#2
Xubing Zhang, Qingbin Wu, Tao Hu, Chaoyang Gu, Liang Bi, Ziqiang Wang
AIM: This meta-analysis aims to compare hand-assisted laparoscopic surgery (HALS) with conventional laparoscopic surgery (LAS) for colorectal cancer (CRC) in terms of intraoperative, postoperative, and survival outcomes. MATERIALS AND METHODS: A systematic literature search with no limits was performed in PubMed, Embase, and Medline. The last search was performed on March 31, 2017. The outcomes of interests included intraoperative outcomes (operative time, blood loss, length of incision, transfusion, conversion, and lymph nodes harvested), postoperative outcomes (length of hospital stay, time to first flatus, time to first bowel movement, postoperative complications, mortality, reoperation, ileus, anastomotic leakage, postoperative bleeding, wound infection, intra-abdominal abscess, urinary complication, cardiopulmonary complication, and readmission), and 5-year survival outcomes...
August 16, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28813538/genome-wide-association-analysis-reveals-genetic-loci-and-candidate-genes-for-feeding-behavior-and-eating-efficiency-in-duroc-boars
#3
Rongrong Ding, Jianping Quan, Ming Yang, Xingwang Wang, Enqin Zheng, Huaqiang Yang, Disheng Fu, Yang Yang, Linxue Yang, Zicong Li, Dewu Liu, Gengyuan Cai, Zhenfang Wu, Jie Yang
Efficient use of feed resources is a challenge in the pork industry because the largest variability in expenditure is attributed to the cost of fodder. Efficiency of feeding is directly related to feeding behavior. In order to identify genomic regions controlling feeding behavior and eating efficiency traits, 338 Duroc boars were used in this study. The Illumina Porcine SNP60K BeadChip was used for genotyping. Data pertaining to individual daily feed intake (DFI), total daily time spent in feeder (TPD), number of daily visits to feeder (NVD), average duration of each visit (TPV), mean feed intake per visit (FPV), mean feed intake rate (FR), and feed conversion ratio (FCR) were collected for these pigs...
2017: PloS One
https://www.readbyqxmd.com/read/28813499/staphylococcus-aureus-biofilm-elicits-the-expansion-activation-and-polarization-of-myeloid-derived-suppressor-cells-in-vivo-and-in-vitro
#4
Kuo-Ti Peng, Ching-Chuan Hsieh, Tsung-Yu Huang, Pei-Chun Chen, Hsin-Nung Shih, Mel S Lee, Pey-Jium Chang
Staphylococcus aureus (S. aureus) is one of the most common causes of biofilm infections in periprosthetic joint infections (PJIs). Accumulating evidence has shown that the immunosuppressive environment established by S. aureus biofilm infection in PJIs involves the presence of myeloid-derived suppressor cells (MDSCs) and M2-macrophages. Due to the diversity of MDSCs, little is known about whether S. aureus biofilm preferentially expands specific MDSC subsets or whether MDSCs can further differentiate into M2-macrophages during S...
2017: PloS One
https://www.readbyqxmd.com/read/28813465/long-term-persistent-infection-of-hpv-16-e6-up-regulate-sp1-and-htert-by-inhibiting-lkb1-in-lung-cancer-cells
#5
Jing-Hua Yang, Xiao-Yan Li, Xin Wang, Wei-Jian Hou, Xue-Shan Qiu, En-Hua Wang, Guang-Ping Wu
HPV 16 E6 upregulates hTERT expression in lung cancer cells. However, the underlying molecular mechanism is unclear. In this paper, E6, LKB1, SP1, and hTERT mRNA expression levels were detected in brushing cells of patients with lung cancer (n = 106) and with benign lung disease (n = 68) by qRT-PCR. The mRNA expression levels of E6, SP1, and hTERT were significantly increased in the malignant group compared with the benign group (P < 0.01). Conversely, the mRNA expression level of LKB1 was significantly decreased in the malignant group (P < 0...
2017: PloS One
https://www.readbyqxmd.com/read/28813430/reprogramming-human-gallbladder-cells-into-insulin-producing-%C3%AE-like-cells
#6
Feorillo Galivo, Eric Benedetti, Yuhan Wang, Carl Pelz, Jonathan Schug, Klaus H Kaestner, Markus Grompe
The gallbladder and cystic duct (GBCs) are parts of the extrahepatic biliary tree and share a common developmental origin with the ventral pancreas. Here, we report on the very first genetic reprogramming of patient-derived human GBCs to β-like cells for potential autologous cell replacement therapy for type 1 diabetes. We developed a robust method for large-scale expansion of human GBCs ex vivo. GBCs were reprogrammed into insulin-producing pancreatic β-like cells by a combined adenoviral-mediated expression of hallmark pancreatic endocrine transcription factors PDX1, MAFA, NEUROG3, and PAX6 and differentiation culture in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28813154/on-the-roles-of-free-electrons-and-h2o2-in-the-optical-breakdown-induced-photochemical-reduction-of-aqueous-aucl4
#7
Victoria Kathryn Meader, Mallory G John, Collin J Rodrigues, Katharine Moore Tibbetts
Free electrons and H2O2 formed in an optical breakdown plasma are found to di- rectly control the kinetics of [AuCl4]- reduction to form Au nanoparticles (AuNPs) during femtosecond laser-assisted synthesis of AuNPs. The formation rates of both free electrons and H2O2 strongly depend on the energy and duration of the 800 nm laser pulses over the ranges of 10 - 2400 μJ and 30 - 1500 fs. By monitoring the conversion of [AuCl4]- to AuNPs using in situ UV-vis spectroscopy during laser irradiation, the first- and second-order rate constants in the autocatalytic rate law, k1 and k2, were extracted and compared to the computed free electron densities and experimentally measured H2O2 formation rates...
August 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28813140/robust-pitaya-structured-pyrite-as-high-energy-density-cathode-for-high-rate-lithium-batteries
#8
Xijun Xu, Jun Liu, Zhengbo Liu, Jiadong Shen, Renzong Hu, Jiangwen Liu, Liuzhang Ouyang, Lei Zhang, Min Zhu
To solve the serious problems (the agglomeration of nano-Fe0, dissolution of polysulfide and low electronic conductivity of Li2S) of earth-abundant pyrite (FeS2) cathode for lithium batteries, a simple in-situ encapsulation and transformation route has been successfully developed to synthesis pitaya-structured porous carbon embedded with FeS2 nanoparticles. Due to such hierarchical architecture design, this cathode of pitaya-structured FeS2@C can effectively avoid the serious agglomeration and coarsening of small Fe nanoparticles, reduce the dissolution of polysulfide and provide superior kinetics toward lithium storage, resulting in enhanced reversibility and rate capability...
August 16, 2017: ACS Nano
https://www.readbyqxmd.com/read/28813063/tuning-mass-transport-in-magnetic-nanoparticle-filled-viscoelastic-hydrogels-using-low-frequency-rotating-magnetic-fields
#9
Shahab Boroun, Faïçal Larachi
This study investigates the response of magnetic nanoparticles (MNPs), dispersed in a viscoelastic hydrogel, to an external rotating magnetic field (RMF) for the purpose of developing a new class of magneto-responsive materials with tunable mass transport properties. Ferrogels were prepared by chemical cross-linking and polymerization of acrylamide in colloidal dispersions of thermally blocked MNPs of cobalt ferrite. Magnetization measurements of ferrogels in a swollen state revealed a transitional state from ferromagnetism to superparamagnetism through the shrinkage of hysteresis loops and the reduction of remanent magnetization...
August 16, 2017: Soft Matter
https://www.readbyqxmd.com/read/28813049/unprecedented-solvent-induced-inter-conversion-between-monomeric-and-dimeric-silylene-zinc-iodide-adducts
#10
Sandeep Yadav, Ekta Sangtani, Diksha Dhawan, Rajesh G Gonnade, Debashree Ghosh, Sakya S Sen
Usually, when a silylene reacts with a transition metal Lewis acid, it forms an adduct which could be either monomeric or dimeric. However, we present here that a silylene, [PhC(NtBu)2SiN(SiMe3)2] can form both monomeric [PhC(NtBu)2Si{N(SiMe3)2} → ZnI2]·THF (1) and dimeric [{PhC(NtBu)2}(N(SiMe3)2)SiZnI,(μ-I)]2 (2) adducts upon reaction with ZnI2. The formation of 1 and 2 relies upon the solvent used for the reaction or crystallization. When the crystallization is carried out in THF complex 1 is formed, however, when the reaction and crystallization are performed in acetonitrile complex 2 is obtained...
August 16, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28813013/recent-advances-in-electrospun-nanofiber-interfaces-for-biosensing-devices
#11
REVIEW
Eleni Sapountzi, Mohamed Braiek, Jean-François Chateaux, Nicole Jaffrezic-Renault, Florence Lagarde
Electrospinning has emerged as a very powerful method combining efficiency, versatility and low cost to elaborate scalable ordered and complex nanofibrous assemblies from a rich variety of polymers. Electrospun nanofibers have demonstrated high potential for a wide spectrum of applications, including drug delivery, tissue engineering, energy conversion and storage, or physical and chemical sensors. The number of works related to biosensing devices integrating electrospun nanofibers has also increased substantially over the last decade...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28813002/application-of-surfactant-micelle-entrapped-eugenol-for-prevention-of-growth-of-the-shiga-toxin-producing-escherichia-coli-in-ground-beef
#12
Tamra N Tolen, Songsirin Ruengvisesh, Thomas M Taylor
Beef safety may be compromised by O157 and non-O157 Shiga toxin-producing Escherichia coli (STEC) contamination. The capacity of surfactant micelles loaded with the plant-derived antimicrobial eugenol to reduce STEC on beef trimmings that were later ground and refrigerated for five days at 5 ± 1 °C was tested to determine their utility for beef safety protection. STEC-inoculated trimmings were treated with free eugenol, micelle-encapsulated eugenol, 2% lactic acid (55 °C), sterile distilled water (25 °C), or left untreated (control)...
August 16, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28812661/human-population-growth-offsets-climate-driven-increase-in-woody-vegetation-in-sub-saharan-africa
#13
Martin Brandt, Kjeld Rasmussen, Josep Peñuelas, Feng Tian, Guy Schurgers, Aleixandre Verger, Ole Mertz, John R B Palmer, Rasmus Fensholt
The rapidly growing human population in sub-Saharan Africa generates increasing demand for agricultural land and forest products, which presumably leads to deforestation. Conversely, a greening of African drylands has been reported, but this has been difficult to associate with changes in woody vegetation. There is thus an incomplete understanding of how woody vegetation responds to socio-economic and environmental change. Here we used a passive microwave Earth observation data set to document two different trends in land area with woody cover for 1992-2011: 36% of the land area (6,870,000 km(2)) had an increase in woody cover largely in drylands, and 11% had a decrease (2,150,000 km(2)), mostly in humid zones...
March 6, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812581/nfia-co-localizes-with-ppar%C3%AE-and-transcriptionally-controls-the-brown-fat-gene-program
#14
Yuta Hiraike, Hironori Waki, Jing Yu, Masahiro Nakamura, Kana Miyake, Gaku Nagano, Ryo Nakaki, Ken Suzuki, Hirofumi Kobayashi, Shogo Yamamoto, Wei Sun, Tomohisa Aoyama, Yusuke Hirota, Haruya Ohno, Kenji Oki, Masayasu Yoneda, Andrew P White, Yu-Hua Tseng, Aaron M Cypess, Therese J Larsen, Naja Z Jespersen, Camilla Scheele, Shuichi Tsutsumi, Hiroyuki Aburatani, Toshimasa Yamauchi, Takashi Kadowaki
Brown fat dissipates energy as heat and protects against obesity. Here, we identified nuclear factor I-A (NFIA) as a transcriptional regulator of brown fat by a genome-wide open chromatin analysis of murine brown and white fat followed by motif analysis of brown-fat-specific open chromatin regions. NFIA and the master transcriptional regulator of adipogenesis, PPARγ, co-localize at the brown-fat-specific enhancers. Moreover, the binding of NFIA precedes and facilitates the binding of PPARγ, leading to increased chromatin accessibility and active transcription...
August 14, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28812580/lactate-dehydrogenase-activity-drives-hair-follicle-stem-cell-activation
#15
Aimee Flores, John Schell, Abigail S Krall, David Jelinek, Matilde Miranda, Melina Grigorian, Daniel Braas, Andrew C White, Jessica L Zhou, Nicholas A Graham, Thomas Graeber, Pankaj Seth, Denis Evseenko, Hilary A Coller, Jared Rutter, Heather R Christofk, William E Lowry
Although normally dormant, hair follicle stem cells (HFSCs) quickly become activated to divide during a new hair cycle. The quiescence of HFSCs is known to be regulated by a number of intrinsic and extrinsic mechanisms. Here we provide several lines of evidence to demonstrate that HFSCs utilize glycolytic metabolism and produce significantly more lactate than other cells in the epidermis. Furthermore, lactate generation appears to be critical for the activation of HFSCs as deletion of lactate dehydrogenase (Ldha) prevented their activation...
August 14, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28812549/changing-the-agriculture-and-environment-conversation
#16
Elena M Bennett
No abstract text is available yet for this article.
January 4, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812515/recognising-and-responding-to-care-erosion-part-1
#17
Jan Martinus Anne de Vries, Fiona Timmins
This article is the first in a two-part series discussing declining standards of care. Many healthcare organisations, particularly hospitals, are under increased pressure to maintain standards of care while experiencing funding and staff shortages, and increasing patient numbers and demand for services. One of the main risks associated with these competing demands is a gradual decline in care standards, described as 'care erosion' in this article. Understanding the psychosocial mechanisms that can lead to care erosion is important in preventing its occurrence...
August 16, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28812427/biosynthesis-of-anthraquinone-derivatives-in-a-sesamum-indicum-hairy-root-culture
#18
Toshio Furumoto, Ryuta Sato
In order to investigate the intermediacy of 2-(4-methylpent-3-en-1-yl)anthraquinone (MPAQ), a possible intermediate for the biosynthesis of anthraquinone derivatives in sesame (Sesamum indicum), (2)H-labeled MPAQ was administered to a hairy root culture of S. indicum. Efficient conversion of fed MPAQ to 2-[(Z)-4-methylpenta-1,3-dien-1-yl]anthraquinone ((Z)-MPDEAQ) was observed. Furthermore, administration experiment with (2)H-labeled 2-geranyl-1,4-naphthohydroquinone, another possible intermediate, showed that it was converted to MPAQ and (Z)-MPDEAQ...
August 16, 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28812368/how-psychiatrists-recommend-treatment-and-its-relationship-with-patient-uptake
#19
Laura Thompson, Rose McCabe
Consultations for patients with chronic mental health conditions are conceived as meetings of experts: medical and experiential, respectively. Treatment decisions, in these terms, become a joint responsibility rather than handed down ex-cathedra. One resource for constituting decisions as 'shared' is the treatment recommendation - decisional authority can be invoked through its design. There is concern that people diagnosed with schizophrenia are infrequently involved in treatment decisions. However, the methods psychiatrists actually employ remain undefined...
August 16, 2017: Health Communication
https://www.readbyqxmd.com/read/28812341/efficient-sky-blue-perovskite-light-emitting-devices-based-on-ethylammonium-bromide-induced-layered-perovskites
#20
Qi Wang, Jie Ren, Xuefeng Peng, Xiaxia Ji, Xiaohui Yang
Low-dimensional organometallic halide perovskites are actively studied for light emitting applications due to their properties such as enlarged exciton binding energy and tunable band-gap. Introduction of large-group ammonium halides not only serves as a convenient and versatile method to obtain layered perovskites, but also allows the exploitation of energy funneling process to achieve high efficiency light emission. Herein, we investigate the influence of the ethylammonium bromide (EABr) addition on the morphology, structure and optical properties of the resultant perovskite materials and report that the phase transition from bulk to layered perovskite occurs in presence of a large amount of EABr...
August 16, 2017: ACS Applied Materials & Interfaces
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