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https://www.readbyqxmd.com/read/28817806/specialized-mechanosensory-nociceptors-mediating-rapid-responses-to-hair-pull
#1
Nima Ghitani, Arnab Barik, Marcin Szczot, James H Thompson, Chia Li, Claire E Le Pichon, Michael J Krashes, Alexander T Chesler
The somatosensory system provides animals with the ability to detect, distinguish, and respond to diverse thermal, mechanical, and irritating stimuli. While there has been progress in defining classes of neurons underlying temperature sensation and gentle touch, less is known about the neurons specific for mechanical pain. Here, we use in vivo functional imaging to identify a class of cutaneous sensory neurons that are selectively activated by high-threshold mechanical stimulation (HTMRs). We show that their optogenetic excitation evokes rapid protective and avoidance behaviors...
August 16, 2017: Neuron
https://www.readbyqxmd.com/read/28817231/effect-of-once-weekly-dulaglutide-on-hba1c-and-fasting-blood-glucose-in-patient-subpopulations-by-gender-duration-of-diabetes-and-baseline-hba1c
#2
Baptist Gallwitz, Samuel Dagogo-Jack, Vivian Thieu, Luis-Emilio Garcia-Perez, Imre Pavo, Maria Yu, Kenneth E Robertson, Nan Zhang, Francesco Giorgino
To evaluate the efficacy and safety of dulaglutide 1.5 mg and 0.75 mg in type 2 diabetes patients by subgroups of gender, duration of diabetes, and baseline HbA1c in the dulaglutide clinical development program (AWARD-1 to -6 and -8 clinical trials). MATERIALS AND METHODS: Change in HbA1c was analysed by gender, duration of diabetes (<5 years, ≥5 years and <10 years, ≥10 years), and baseline HbA1c (<8.5%, ≥8.5%) in pooled and individual studies. Changes from baseline in weight, hypoglycaemia, and gastrointestinal adverse events were evaluated for individual trials...
August 17, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28816668/fast-open-world-person-re-identification
#3
Xiatian Zhu, Botong Wu, Dongcheng Huang, Wei-Shi Zheng
Existing person re-identification (re-id) methods typically assume that (1) any probe person is guaranteed to appear in the gallery target population during deployment (i.e. closed-world), and (2) the probe set contains only a limited number of people (i.e. small search scale). Both assumptions are artificial and breached in real-world applications, since the probe population in target people search can be extremely vast in practice due to the ambiguity of probe search space boundary. Therefore, it is unrealistic that any probe person is assumed as one target people, and a large-scale search in person images is inherently demanded...
August 16, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28816320/formation-of-titanium-dioxide-core-shell-microcapsules-through-a-binary-phase-spray-technique
#4
Jonatan Bergek, Björn Elgh, Anders E C Palmqvist, Lars Nordstierna
Core-shell microcapsules consisting of a titanium dioxide shell and a hydrophobic solvent core have been prepared with diameters of a few micrometers and a narrow size distribution using a simple and fast airbrush technique. These microcapsules were prepared at room temperature in a single-step process in which an oil with a dissolved titanium alkoxide precursor was forced together with an aqueous solution, containing a surface-active polymer, through a narrow spray nozzle using a nitrogen gas propellant. Several different parameters of chemical, physical, and processing origin were investigated to find an optimal recipe...
August 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28815755/large-scale-synthesis-of-freestanding-layer-structured-pbi2-and-mapbi3-nanosheets-for-high-performance-photodetection
#5
Changyong Lan, Ruoting Dong, Ziyao Zhou, Lei Shu, Dapan Li, SenPo Yip, Johnny C Ho
Recently, due to the possibility of thinning down to the atomic thickness to achieve exotic properties, layered materials have attracted extensive research attention. In particular, PbI2 , a kind of layered material, and its perovskite derivatives, CH3 NH3 PbI3 (i.e., MAPbI3 ), have demonstrated impressive photoresponsivities for efficient photodetection. Herein, the synthesis of large-scale, high-density, and freestanding PbI2 nanosheets is demonstrated by manipulating the microenvironment during physical vapor deposition...
August 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28813537/metabolite-patterns-predicting-sex-and-age-in-participants-of-the-karlsruhe-metabolomics-and-nutrition-karmen-study
#6
Manuela J Rist, Alexander Roth, Lara Frommherz, Christoph H Weinert, Ralf Krüger, Benedikt Merz, Diana Bunzel, Carina Mack, Björn Egert, Achim Bub, Benjamin Görling, Pavleta Tzvetkova, Burkhard Luy, Ingrid Hoffmann, Sabine E Kulling, Bernhard Watzl
Physiological and functional parameters, such as body composition, or physical fitness are known to differ between men and women and to change with age. The goal of this study was to investigate how sex and age-related physiological conditions are reflected in the metabolome of healthy humans and whether sex and age can be predicted based on the plasma and urine metabolite profiles. In the cross-sectional KarMeN (Karlsruhe Metabolomics and Nutrition) study 301 healthy men and women aged 18-80 years were recruited...
2017: PloS One
https://www.readbyqxmd.com/read/28813307/the-innate-alarm-system-in-ptsd-conscious-and-subconscious-processing-of-threat
#7
REVIEW
Ruth A Lanius, Daniela Rabellino, Jenna E Boyd, Sherain Harricharan, Paul A Frewen, Margaret C McKinnon
The innate alarm system (IAS), comprised of functionally connected brain regions including the brainstem, amygdala, pulvinar, and frontotemporal cortex, is a fast subcortical brain network facilitating rapid responses to threat. Post-traumatic stress disorder (PTSD) features subconscious and conscious threat detection, together contributing to hyperarousal symptoms. Emerging literature identifies aberrant threat-related neurocircuitry involved in subconscious and conscious threat processing in PTSD. We review this literature, focusing on subconscious threat processing and its relation to the IAS...
April 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28813028/detection-methodologies-for-pathogen-and-toxins-a-review
#8
REVIEW
Md Eshrat E Alahi, Subhas Chandra Mukhopadhyay
Pathogen and toxin-contaminated foods and beverages are a major source of illnesses, even death, and have a significant economic impact worldwide. Human health is always under a potential threat, including from biological warfare, due to these dangerous pathogens. The agricultural and food production chain consists of many steps such as harvesting, handling, processing, packaging, storage, distribution, preparation, and consumption. Each step is susceptible to threats of environmental contamination or failure to safeguard the processes...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28812723/the-unconstrained-evolution-of-fast-and-efficient-antibiotic-resistant-bacterial-genomes
#9
Carlos Reding-Roman, Mark Hewlett, Sarah Duxbury, Fabio Gori, Ivana Gudelj, Robert Beardmore
Evolutionary trajectories are constrained by trade-offs when mutations that benefit one life history trait incur fitness costs in other traits. As resistance to tetracycline antibiotics by increased efflux can be associated with an increase in length of the Escherichia coli chromosome of 10% or more, we sought costs of resistance associated with doxycycline. However, it was difficult to identify any because the growth rate (r), carrying capacity (K) and drug efflux rate of E. coli increased during evolutionary experiments where the species was exposed to doxycycline...
January 30, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28811656/phageterm-a-tool-for-fast-and-accurate-determination-of-phage-termini-and-packaging-mechanism-using-next-generation-sequencing-data
#10
Julian R Garneau, Florence Depardieu, Louis-Charles Fortier, David Bikard, Marc Monot
The worrying rise of antibiotic resistance in pathogenic bacteria is leading to a renewed interest in bacteriophages as a treatment option. Novel sequencing technologies enable description of an increasing number of phage genomes, a critical piece of information to understand their life cycle, phage-host interactions, and evolution. In this work, we demonstrate how it is possible to recover more information from sequencing data than just the phage genome. We developed a theoretical and statistical framework to determine DNA termini and phage packaging mechanisms using NGS data...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811392/role-of-sympathetic-cotransmitter-galanin-on-autonomic-balance-in-heart-failure-an-active-player-or-a-bystander
#11
Demet Özkaramanlı Gür, Miray Sağbaş, Aydın Akyüz, Savaş Güzel, Şeref Alpsoy, Niyazi Güler
OBJECTIVE: Galanin, a cotransmitter similar to neuropeptide Y (NPY), aggravates autonomic imbalance in systolic heart failure (HF) by attenuating vagal tonus after burst sympathetic activity. In animal HF models, galanin antagonists have improved cardiac function. To determine whether galanin is a promising therapeutic target in HF, we studied its concentrations in HF patients and evaluated its correlation with NPY, markers of humoral activity such as pro-BNP and copeptin, and echocardiographic parameters of HF severity...
August 11, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28811258/category-selective-human-brain-processes-elicited-in-fast-periodic-visual-stimulation-streams-are-immune-to-temporal-predictability
#12
Genevieve L Quek, Bruno Rossion
Recording direct neural activity when periodically inserting exemplars of a particular category in a rapid visual stream of other objects offers an objective and efficient way to quantify perceptual categorization and characterize its spatiotemporal dynamics. However, since periodicity entails predictability, perceptual categorization processes identified within this framework may be partly generated or modulated by temporal expectations. Here we present a stringent test of the hypothesis that temporal predictability generates or modulates category-selective neural processes as measured in a rapid periodic visual stimulation stream...
August 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28811100/is-supercritical-fluid-chromatography-hyphenated-to-mass-spectrometry-suitable-for-the-quality-control-of-vitamin-d3-oily-formulations
#13
B Andri, A Dispas, R Klinkenberg, B Streel, R D Marini, E Ziémons, Ph Hubert
Nowadays, many efforts are devoted to improve analytical methods regarding efficiency, analysis time and greenness. In this context, Supercritical Fluid Chromatography (SFC) is often regarded as a good alternative over Normal Phase Liquid Chromatography (NPLC). Indeed, modern SFC separations are fast, efficient with suitable quantitative performances. Moreover, the hyphenation of SFC to mass spectrometry (MS) provides additional gains in specificity and sensitivity. The present work aims at the determination of vitamin D3 by SFC-MS for routine Quality Control (QC) of medicines specifically...
July 27, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28811038/fast-and-robust-online-adaptive-planning-in-stereotactic-mr-guided-adaptive-radiation-therapy-smart-for-pancreatic-cancer
#14
O Bohoudi, A M E Bruynzeel, S Senan, J P Cuijpers, B J Slotman, F J Lagerwaard, M A Palacios
BACKGROUND AND PURPOSE: To implement a robust and fast stereotactic MR-guided adaptive radiation therapy (SMART) online strategy in locally advanced pancreatic cancer (LAPC). MATERIAL AND METHODS: SMART strategy for plan adaptation was implemented with the MRIdian system (ViewRay Inc.). At each fraction, OAR (re-)contouring is done within a distance of 3cm from the PTV surface. Online plan re-optimization is based on robust prediction of OAR dose and optimization objectives, obtained by building an artificial neural network (ANN)...
August 12, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28810948/development-and-validation-of-a-robust-and-efficient-hplc-method-for-the-simultaneous-quantification-of-levodopa-carbidopa-benserazide-and-entacapone-in-complex-matrices
#15
Erik Wollmer, Sandra Klein
PURPOSE: A variety of fixed-dose combination products is used in the therapy of Parkinson Disease. However, to date a proper analytical method applicable for comparative screening of different antiparkinson products was not available. The objective of the present work was thus to develop and validate an analytical method for the simultaneous quantification of levodopa, carbidopa, benserazide and entacapone. The method should be applicable for quantifying samples from drug release experiments with marketed products and prototype formulations performed under compendial and biorelevant test conditions...
2017: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28810226/rapid-removal-of-organic-pollutants-by-activation-sulfite-with-ferrate
#16
Jing Zhang, Liang Zhu, Zhenyu Shi, Ying Gao
With the addition of sulfite, almost complete removal of seven out of eight tested contaminants, i.e. benzotriazole, phenol, ciprofloxacin, methyl blue, rhodamine B, methyl orange and sulfamethoxazole, was observed in 30 s except for sulfamethoxazole at pH 9.0, while Fe(VI) alone only resulted in less than 6% removal. In this study, the mechanism of sulfite/Fe(VI) process was explored for the first time. Firstly, sulfite attacks Fe(VI) via a 1-e(-) transfer forming the primary sulfite radical (SO3(-)), then SO3(-) reacts rapidly with oxygen in a diffusion controlled rate to form a much more reactive peroxyl radical SO5(-), which further reacts with HSO3(-) and produces SO4(-)...
July 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28810061/single-dose-pharmacokinetics-of-co-crystal-of-tramadol-celecoxib-results-of-a-4-way-randomized-open-label-phase-i-clinical-trial-in-healthy-subjects
#17
Sebastián Videla, Mounia Lahjou, Anna Vaqué, Mariano Sust, Mercedes Encabo, Lluis Soler, Artur Sans, Eric Sicard, Neus Gascón, Gregorio Encina, Carlos Plata-Salamán
AIM: Co-Crystal of Tramadol-Celecoxib (CTC) is a novel co-crystal molecule containing two active pharmaceutical ingredients (APIs) under development by Esteve (E-58425) and Mundipharma Research (MR308). This Phase I study compared single-dose pharmacokinetics (PK) of CTC with those of the individual reference products (immediate-release [IR] tramadol and celecoxib) alone and in open combination. METHODS: Healthy adults aged 18-55 years were orally administered four treatments under fasted conditions (separated by 7-day wash-out period): 200 mg IR CTC (equivalent to 88 mg tramadol and 112 mg celecoxib; Treatment-1); 100 mg IR tramadol (Treatment-2); 100 mg celecoxib (Treatment-3); and 100 mg IR tramadol and 100 mg celecoxib (Treatment-4)...
August 15, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28809605/age-modifies-the-effect-of-2-mev-fast-neutrons-on-rat-mammary-carcinogenesis
#18
Tatsuhiko Imaoka, Mayumi Nishimura, Kazuhiro Daino, Ayaka Hosoki, Masaru Takabatake, Toshiaki Kokubo, Kazutaka Doi, Kaye Showler, Yukiko Nishimura, Hitomi Moriyama, Takamitsu Morioka, Yoshiya Shimada, Shizuko Kakinuma
The relative biological effectiveness (RBE) of neutrons depends on their physical nature (e.g., energy) and the biological context (e.g., end points, materials). From the perspective of radiological protection, age is an important biological context that influences radiation-related cancer risk, but very few studies have addressed its potential impact on neutron effects. We therefore investigated the influence of age on the effect of accelerator-generated fast neutrons (mean energy, ∼2 MeV) in an animal model of breast carcinogenesis...
August 15, 2017: Radiation Research
https://www.readbyqxmd.com/read/28809537/confined-water-structure-dynamics-and-thermodynamics
#19
Sudip Chakraborty, Hemant Kumar, Chandan Dasgupta, Prabal K Maiti
Understanding the properties of strongly confined water is important for a variety of applications such as fast flow and desalination devices, voltage generation, flow sensing, and nanofluidics. Confined water also plays an important role in many biological processes such as flow through ion channels. Water in the bulk exhibits many unusual properties that arise primarily from the presence of a network of hydrogen bonds. Strong confinement in structures such as carbon nanotubes (CNTs) substantially modifies the structural, thermodynamic, and dynamic (both translational and orientational) properties of water by changing the structure of the hydrogen bond network...
August 15, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28809005/resazurin-live-cell-assay-setup-and-fine-tuning-for-reliable-cytotoxicity-results
#20
José Á Rodríguez-Corrales, Jatinder S Josan
In vitro cytotoxicity tests allow for fast and inexpensive screening of drug efficacy prior to in vivo studies. The resazurin assay (commercialized as Alamar Blue(®)) has been extensively utilized for this purpose in 2D and 3D cell cultures, and high-throughput screening. However, improper or lack of assay validation can generate unreliable results and limit reproducibility. Herein, we report a detailed protocol for the optimization of the resazurin assay to determine relevant analytical (limits of detection, quantification, and linear range) and biological (growth kinetics) parameters, and, thus, provide accurate cytotoxicity results...
2017: Methods in Molecular Biology
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