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https://www.readbyqxmd.com/read/28350959/mapping-of-drug-like-chemical-universe-with-reduced-complexity-molecular-frameworks
#1
Aleksejs Kontijevskis
The emergence of DNA-encoded chemical libraries (DEL) field in past decade has attracted attention of pharmaceutical industry as a powerful mechanism for the discovery of novel drug-like hits for various biological targets. Nuevolution Chemetics technology enables DNA encoded synthesis of billions of chemically diverse drug-like small molecule compounds, and the efficient screening and optimization of these, facilitating effective identification of drug candidates at an unprecedented speed and scale. Although many approaches have been developed by the cheminformatics community for the analysis and visualization of drug-like chemical space, most of them are restricted to the analysis of maximum few millions of compounds and cannot handle collections of 10(8)-10(12) compounds typical for DELs...
March 28, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28346100/robotic-mammosphere-assay-for-high-throughput-screening-in-triple-negative-breast-cancer
#2
P A Fitzpatrick, N Akrap, E M V Söderberg, H Harrison, G J Thomson, G Landberg
In order to identify novel treatment principles specifically affecting cancer stem cells in triple-negative breast cancer, we have developed a high-throughput screening method based on the mammosphere and anoikis resistance assays allowing us to screen compounds using a functional readout. The assay was validated against manual protocols and through the use of positive controls, such as the response to hypoxia and treatment with the known cancer stem cell-targeting compound salinomycin. Manual and robotic procedures were compared and produced similar results in cell handling, cell cultures, and counting techniques, with no statistically significant difference produced from either method...
February 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28346083/logistic-regression-likelihood-ratio-test-analysis-for-detecting-signals-of-adverse-events-in-post-market-safety-surveillance
#3
Kijoeng Nam, Nicholas C Henderson, Patricia Rohan, Emily Jane Woo, Estelle Russek-Cohen
The Vaccine Adverse Event Reporting System (VAERS) and other product surveillance systems compile reports of product-associated adverse events (AEs), and these reports may include a wide range of information including age, gender, and concomitant vaccines. Controlling for possible confounding variables such as these is an important task when utilizing surveillance systems to monitor post-market product safety. A common method for handling possible confounders is to compare observed product-AE combinations with adjusted baseline frequencies where the adjustments are made by stratifying on observable characteristics...
March 2, 2017: Journal of Biopharmaceutical Statistics
https://www.readbyqxmd.com/read/28346014/intestinal-absorption-and-renal-reabsorption-of-calcium-throughout-postnatal-development
#4
Megan R Beggs, R Todd Alexander
Calcium is vital for many physiological functions including bone mineralization. Postnatal deposition of calcium into bone is greatest in infancy and continues through childhood and adolescence until peek mineral density is reached in early adulthood. Thereafter, bone mineral density remains static until it eventually declines in later life. A positive calcium balance, i.e. more calcium absorbed than excreted, is crucial to bone deposition during growth and thus to peek bone mineral density. Dietary calcium is absorbed from the intestine into the blood...
April 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28345570/appraising-the-spectrum-of-firework-trauma-and-the-related-laws-during-diwali-in-north-india
#5
Ramesh Venkatesh, Prachi Gurav, Shailja Tibrewal, Manisha Agarwal, Suneeta Dubey, Umang Mathur, Suma Ganesh, Sima Das
PURPOSE: To evaluate the epidemiological characteristics and outcomes of ocular injuries resulting from the use of firecrackers during the Diwali festival in all age groups. MATERIALS AND METHODS: A single-center, retrospective, hospital-based case series presenting with ocular trauma consequent to fireworks usage in a tertiary eye care center in North India during the 5 days of Diwali festival from 2011 to 2015 was conducted. RESULTS: A total of 53 eyes of 45 patients were included in the study, out of which the vast majority (39/87%) were males...
February 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28345385/activation-of-5-ht1a-receptors-in-the-rat-dorsomedial-hypothalamus-inhibits-stress-induced-activation-of-the-hypothalamic-pituitary-adrenal-axis
#6
Christopher E Stamper, James E Hassell, Adam J Kapitz, Kenneth J Renner, Miles Orchinik, Christopher A Lowry
Acute activation of the hypothalamic-pituitary-adrenal (HPA) axis, leading to the release of corticosteroid hormones into the circulation, is an adaptive response to perceived threats. Persistent activation of the HPA axis can lead to impaired physiological or behavioral function with maladaptive consequences. Thus, efficient control and termination of stress responses is essential for well-being. However, inhibitory control mechanisms governing the HPA axis are poorly understood. Previous studies suggest that serotonergic systems, acting within the medial hypothalamus, play an important role in inhibitory control of stress-induced HPA axis activity...
March 27, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28345192/respirometry-increases-cortisol-levels-in-rainbow-trout-oncorhynchus-mykiss-implications-for-measurements-of-metabolic-rate
#7
L Murray, M D Rennie, J C Svendsen, E C Enders
This study aimed to assess the extent to which chasing, handling and confining Oncorhynchus mykiss to a small respirometer chamber during respirometric experiments is stressful and affects metabolic measurements. The study observed increased cortisol levels in animals tested using a chase protocol and subsequent intermittent-flow respirometry, suggesting that this procedural treatment may stress animals.
March 27, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28344853/snap-a-general-purpose-network-analysis-and-graph-mining-library
#8
Jure Leskovec, Rok Sosič
Large networks are becoming a widely used abstraction for studying complex systems in a broad set of disciplines, ranging from social network analysis to molecular biology and neuroscience. Despite an increasing need to analyze and manipulate large networks, only a limited number of tools are available for this task. Here, we describe Stanford Network Analysis Platform (SNAP), a general-purpose, high-performance system that provides easy to use, high-level operations for analysis and manipulation of large networks...
October 2016: ACM Transactions on Intelligent Systems and Technology
https://www.readbyqxmd.com/read/28344849/developing-asbestos-job-exposure-matrix-using-occupation-and-industry-specific-exposure-data-1984-2008-in-republic-of-korea
#9
Sangjun Choi, Dongmug Kang, Donguk Park, Hyunhee Lee, Bongkyoo Choi
BACKGROUND: The goal of this study is to develop a general population job-exposure matrix (GPJEM) on asbestos to estimate occupational asbestos exposure levels in the Republic of Korea. METHODS: Three Korean domestic quantitative exposure datasets collected from 1984 to 2008 were used to build the GPJEM. Exposure groups in collected data were reclassified based on the current Korean Standard Industrial Classification (9(th) edition) and the Korean Standard Classification of Occupations code (6(th) edition) that is in accordance to international standards...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28344840/simulation-and-damage-analysis-of-an-accidental-jet-fire-in-a-high-pressure-compressed-pump-shelter
#10
Chang Bong Jang, Sang-Won Choi
BACKGROUND: As one of the most frequently occurring accidents in a chemical plant, a fire accident may occur at any place where transfer or handling of combustible materials is routinely performed. METHODS: In particular, a jet fire incident in a chemical plant operated under high pressure may bring severe damage. To review this event numerically, Computational Fluid Dynamics methodology was used to simulate a jet fire at a pipe of a compressor under high pressure...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28344836/human-body-mechanics-of-pushing-and-pulling-analyzing-the-factors-of-task-related-strain-on-the-musculoskeletal-system
#11
REVIEW
Andreas Argubi-Wollesen, Bettina Wollesen, Martin Leitner, Klaus Mattes
The purpose of this review is to name and describe the important factors of musculoskeletal strain originating from pushing and pulling tasks such as cart handling that are commonly found in industrial contexts. A literature database search was performed using the research platform Web of Science. For a study to be included in this review differences in measured or calculated strain had to be investigated with regard to: (1) cart weight/ load; (2) handle position and design; (3) exerted forces; (4) handling task (push and pull); or (5) task experience...
March 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28344505/neutron-skin-effect-in-direct-photon-and-charged-hadron-production-in-pb-pb-collisions-at-the-lhc
#12
Ilkka Helenius, Hannu Paukkunen, Kari J Eskola
A well-established observation in nuclear physics is that in neutron-rich spherical nuclei the distribution of neutrons extends farther than the distribution of protons. In this work, we scrutinize the influence of this so called neutron-skin effect on the centrality dependence of high-[Formula: see text] direct-photon and charged-hadron production. We find that due to the estimated spatial dependence of the nuclear parton distribution functions, it will be demanding to unambiguously expose the neutron-skin effect with direct photons...
2017: European Physical Journal. C, Particles and Fields
https://www.readbyqxmd.com/read/28344467/temperature-excursion-management-a-novel-approach-of-quality-system-in-pharmaceutical-industry
#13
REVIEW
Nirmal Kumar, Ajeya Jha
Quality of pharmaceutical product largely depends upon the environment controls during its storage and handling. Each pharmaceutical product should be handled and stored under specified storage condition labelled on product information data sheet or product pack. Hence the temperature excursions during receipt of raw materials, manufacturing of pharmaceutical products and distribution should be managed during entire product life cycle with holistic approach. The research is based on primary data and exploratory study through literature review...
February 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28344190/an-artificial-intelligence-approach-fit-for-trna-gene-studies-in-the-era-of-big-sequence-data
#14
Yuki Iwasaki, Takashi Abe, Kennosuke Wada, Yoshiko Wada, Toshimichi Ikemura
Unsupervised data mining capable of extracting a wide range of knowledge from big data without prior knowledge or particular models is a timely application in the era of big sequence data accumulation in genome research. By handling oligonucleotide compositions as high-dimensional data, we have previously modified the conventional self-organizing map (SOM) for genome informatics and established BLSOM, which can analyze more than ten million sequences simultaneously. Here, we develop BLSOM specialized for tRNA genes (tDNAs) that can cluster (self-organize) more than one million microbial tDNAs according to their cognate amino acid solely depending on tetra- and pentanucleotide compositions...
March 24, 2017: Genes & Genetic Systems
https://www.readbyqxmd.com/read/28343668/clinician-generated-torque-on-abutment-screws-using-different-hand-screwdrivers
#15
Marzieh Alikhasi, Mahmoud Kazemi, Hamid Jalali, Shervin Hashemzadeh, Hamide Dodangeh, Burak Yilmaz
STATEMENT OF PROBLEM: Many clinicians use hand screwdrivers to tighten prosthetic and abutment screws. The impact of the screwdriver type, the location of the implant, and the sex of the practitioner on the generated torque is not well understood. PURPOSE: The purpose of this in vitro study was to compare the torque generated by different hand screwdrivers when used in the anterior and posterior regions and to evaluate the correlation between the applied torque and the sex and body mass index (BMI) of the practitioner...
March 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28343005/development-of-a-uv-crosslinked-biodegradable-hydrogel-containing-adipose-derived-stem-cells-to-promote-vascularization-for-skin-wounds-and-tissue-engineering
#16
Gozde Eke, Naside Mangir, Nesrin Hasirci, Sheila MacNeil, Vasif Hasirci
The aim of this study was to design a dermal substitute containing adipose derived stem cells (ADSC) that can be used to improve the regeneration of skin on difficult wound beds by stimulating rapid neovascularization. This was achieved by first synthesizing methacrylated gelatin (GelMA) and methacrylated hyaluronic acid (HAMA) precursors which could be stored at -80 (o)C after lyophilisation. Polymer precursors were then dissolved in media (in 15:1 ratio), ADSCs added together with the photoinitiator and crosslinked with 40 s of UV...
March 18, 2017: Biomaterials
https://www.readbyqxmd.com/read/28342822/antiplatelet-activity-of-drugs-used-in-hypertension-dyslipidemia-and-diabetes-additional-benefit-in-cardiovascular-diseases-prevention
#17
REVIEW
Cesar Sepúlveda, Iván Palomo, Eduardo Fuentes
Beyond its function in hemostasis, platelets activation has an important role in cardiovascular diseases (CVD) development. There are different clinical conditions that can mediate abnormal platelet activation and favors pathological thrombosis and CVD. These include Hypertension, diabetes and dyslipidemia, all risks factors from CVD development. Different drugs employed in the handled of these conditions have showed decreases platelet activation and related markers. This effect is in part by improved the base condition; however someone of these drugs can modulate platelet targets...
March 22, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28342790/lipocalin-2-and-iron-trafficking-in-the-tumor-microenvironment
#18
REVIEW
Michaela Jung, Christina Mertens, Rebekka Bauer, Claudia Rehwald, Bernhard Brüne
Iron is an essential element for virtually all organisms. It facilitates cell proliferation and growth but also contributes to major hallmarks of cancer such as tumor initiation, growth, and metastasis. Often, iron handling of tumor cells is disturbed, with altered iron acquisition, efflux, and storage. Targeting perturbed iron metabolic pathways might open opportunities towards novel approaches in cancer treatment. It is becoming clear that cells of the tumor microenvironment such as macrophages contribute to tumor progression...
March 22, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28342346/can-wastewater-based-epidemiology-be-used-to-evaluate-the-health-impact-of-temperature-an-exploratory-study-in-an-australian-population
#19
Dung Phung, Jochen Mueller, Foon Yin Lai, Jake O'Brien, Nhung Dang, Lidia Morawska, Phong K Thai
Ambient temperature is known to have impact on population health but assessing its impact by the traditional cohort approach is resource intensive. Wastewater-based epidemiology (WBE) could be an alternative for the traditional approach. This study was to provide the first evaluation to see if WBE can be used to assess the impact of temperature exposure to a population in South East Queensland, Australia using selected pharmaceuticals and personal care products (PPCPs) as biomarkers. Daily loads of eight PPCPs in wastewater collected from a wastewater treatment plant were measured from February 2011 to June 2012...
March 22, 2017: Environmental Research
https://www.readbyqxmd.com/read/28342340/cellulose-decomposition-and-larval-biomass-production-from-the-co-digestion-of-dairy-manure-and-chicken-manure-by-mini-livestock-hermetia-illucens-l
#20
Kashif Ur Rehman, Minmin Cai, Xiaopeng Xiao, Longyu Zheng, Hui Wang, Abdul Aziz Soomro, Yusha Zhou, Wu Li, Ziniu Yu, Jibin Zhang
World trends toward the modern dairies intensification on large production units cause massive animal manure production and accumulation. Improper handling of manure produced by industrial farm operation greatly deteriorates the major environmental media including air, water and soil. The black soldier fly utilizes organic waste and converts it into larvae biomass to be used as livestock feed and into residues to be used as bio-fertilizer. However, due to the high ratio of cellulose, hemicellulose and lignin in dairy manure, this conversion is difficult...
March 22, 2017: Journal of Environmental Management
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