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https://www.readbyqxmd.com/read/29334336/engineering-mechanical-microenvironment-of-macrophage-and-its-biomedical-applications
#1
Jing Li, Yuhui Li, Bin Gao, Chuanguang Qin, Yining He, Feng Xu, Hui Yang, Min Lin
Macrophages are the most plastic cells in the hematopoietic system and can be widely found in almost all tissues. Recently studies have shown that mechanical cues (e.g., matrix stiffness and stress/strain) can significantly affect macrophage behaviors. Although existing reviews on the physical and mechanical cues that regulate the macrophage's phenotype are available, engineering mechanical microenvironment of macrophages in vitro as well as a comprehensive overview and prospects for their biomedical applications (e...
January 15, 2018: Nanomedicine
https://www.readbyqxmd.com/read/29333744/high-performance-organic-bulk-heterojunction-solar-cells-based-on-multiple-donor-or-multiple-acceptor-components
#2
REVIEW
Wenchao Huang, Pei Cheng, Yang Michael Yang, Gang Li, Yang Yang
Organic solar cells (OSCs) based on bulk heterojunction structures are promising candidates for next-generation solar cells. However, the narrow absorption bandwidth of organic semiconductors is a critical issue resulting in insufficient usage of the energy from the solar spectrum, and as a result, it hinders performance. Devices based on multiple-donor or multiple-acceptor components with complementary absorption spectra provide a solution to address this issue. OSCs based on multiple-donor or multiple-acceptor systems have achieved power conversion efficiencies over 12%...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29332936/tissue-specific-immunopathology-during-malaria-infection
#3
REVIEW
Cevayir Coban, Michelle Sue Jann Lee, Ken J Ishii
Systemic inflammation mediated by Plasmodium parasites is central to malaria disease and its complications. Plasmodium parasites reside in erythrocytes and can theoretically reach all host tissues via the circulation. However, actual interactions between parasitized erythrocytes and host tissues, along with the consequent damage and pathological changes, are limited locally to specific tissue sites. Such tissue specificity of the parasite can alter the outcome of malaria disease, determining whether acute or chronic complications occur...
January 15, 2018: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/29332842/ligand-cascading-nano-delivery-devices-to-enable-multiscale-targeting-of-anti-neurodegenerative-therapeutics
#4
Adam Mullis, Benjamin William Schlichtmann, Balaji Narasimhan, Rebecca Cademartiri, Surya K Mallapragada
Neurodegenerative diseases are a debilitating set of conditions that affect a significant fraction of the world's population, and this fraction is expected to increase as the population ages. Many therapeutic strategies have been explored to treat the pathological mechanisms of neurodegenerative disease, but multiple sequential hurdles to central nervous system delivery, including the blood-brain barrier, diseased neuronal membranes, and the organelle barrier, make drug delivery challenging and necessitate the use of innovative strategies to target and cross each barrier...
January 15, 2018: Biomedical Materials
https://www.readbyqxmd.com/read/29332468/local-radiotherapy-affects-drug-pharmacokinetics-exploration-of-a-neglected-but-significant-uncertainty-of-cancer-therapy
#5
Yu-Jen Chen, Tung-Hu Tsai, Li-Ying Wang, Chen-Hsi Hsieh
PURPOSE: Concurrent chemoradiation therapy is the mainstay of treatment for many types of malignancies. However, concurrent chemoradiation therapy is associated with a greater number of systemic adverse effects than radiotherapy or chemotherapy alone. SUMMARY: Pharmacokinetics is the study of a drug and/or its metabolite kinetics in the body, including absorption, distribution, metabolism, and elimination. The incidences of adverse effects are markedly higher in patients who receive concurrent chemoradiation therapy than in those who receive either radiotherapy or chemotherapy alone...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29331642/protein-adaptations-in-extremophiles-an-insight-into-extremophilic-connection-of-mycobacterial-proteome
#6
REVIEW
Ashutosh Kumar, Anwar Alam, Deeksha Tripathi, Mamta Rani, Hafeeza Khatoon, Saurabh Pandey, Nasreen Z Ehtesham, Seyed E Hasnain
The biological paradox about how extremophiles persist at extreme ecological conditions throws a fascinating picture of the enormous potential of a single cell to adapt to homeostatic conditions in order to propagate. Unicellular organisms face challenges from both environmental factors and the ecological niche provided by the host tissue. Although the existence of extremophiles and their physiological properties were known for a long time, availability of whole genome sequence has catapulted the study on mechanisms of adaptation and the underlying principles that have enabled these unique organisms to withstand evolutionary and environmental pressures...
January 10, 2018: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29331474/clinical-databases-for-chest-physicians
#7
REVIEW
Andrew M Courtwright, Peter E Gabriel
A clinical database is a repository of patient medical and sociodemographic information focused on one or more specific health condition or exposure. Although clinical databases may be used for research purposes, their primary goal is to collect and track patient data for quality improvement, quality assurance, and/or actual clinical management. This article aims to provide an introduction and practical advice on the development of small-scale clinical databases for Chest physicians and practice groups. Through example projects we discuss the pros and cons of available technical platforms, including Microsoft Excel and Access, relational database management systems such as Oracle and PostgreSQL, and REDCap...
January 10, 2018: Chest
https://www.readbyqxmd.com/read/29330787/mass-spectrometry-and-bioinformatic-analysis-of-hydroxylation-dependent-protein-protein-interactions
#8
Javier Rodriguez, Alex von Kriegsheim
Characterization of how a stimulus regulates the dynamics of protein-protein interaction is critical for understanding how a particular protein is regulated in an intracellular signaling network. Protein hydroxylation, which is a posttranslational modification catalyzed by oxygen-dependent enzymes, is a crucial regulator of protein-protein interactions. Under low oxygen conditions, the activity of many hydroxylases is inhibited, which results in a reduction of substrate hydroxylation. These changes alter the interactome of the substrate, and this dynamic rewiring of signaling networks explains crucial aspects of the adaptive response to hypoxia...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29330714/evidence-based-recommendations-to-improve-the-safe-use-of-drugs-in-patients-with-liver-cirrhosis
#9
Rianne A Weersink, Margriet Bouma, David M Burger, Joost P H Drenth, S Froukje Harkes-Idzinga, Nicole G M Hunfeld, Herold J Metselaar, Margje H Monster-Simons, Katja Taxis, Sander D Borgsteede
INTRODUCTION: The presence of liver cirrhosis can have a major impact on pharmacodynamics and pharmacokinetics, but guidance for prescribing is lacking. OBJECTIVE: The aim of this study is to provide an overview of evidence-based recommendations developed for the safe use of drugs in liver cirrhosis. METHODS: Recommendations were based on a systematic literature search combined with expert opinion from a panel of 10 experts. The safety of each drug was classified as safe, no additional risks known, additional risks known, unsafe, unknown or the safety class was dependent on the severity of liver cirrhosis (Child-Pugh classification)...
January 12, 2018: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/29330132/an-overview-of-the-safety-pharmacology-society-strategic-plan
#10
M K Pugsley, S Authier, J E Koerner, W S Redfern, C G Markgraf, T Brabham, K Correll, M V Soloviev, A Botchway, M Engwall, M Traebert, J-P Valentin, T J Mow, A Greiter-Wilke, D J Leishman, H M Vargas
Safety Pharmacology studies are conducted to characterize the confidence by which biologically active new chemical entities (NCE) may be anticipated as safe. Non-clinical safety pharmacology studies aim to detect and characterize potentially undesirable pharmacodynamic activities using an array of in silico, in vitro and in vivo animal models. While a broad spectrum of methodological innovation and advancement of the science occurs within the Safety Pharmacology Society, the society also focuses on partnerships with health authorities and technology providers and facilitates interaction with organizations of common interest such as pharmacology, physiology, neuroscience, cardiology and toxicology...
January 9, 2018: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/29330110/epigenetics-and-pathogenesis-of-systemic-sclerosis-the-ins-and-outs
#11
REVIEW
Saeed Aslani, Soheila Sobhani, Farhad Gharibdoost, Ahmadreza Jamshidi, Mahdi Mahmoudi
The pathogenesis of many diseases is influenced by environmental factors which can affect human genome and be inherited from generation to generation. Adverse environmental stimuli are recognized through the epigenetic regulatory complex, leading to gene expression alteration, which in turn culminates in disease outcomes. Three epigenetic regulatory mechanisms modulate the manifestation of a gene, namely DNA methylation, histone changes, and microRNAs. Both epigenetics and genetics have been implicated in the pathogenesis of systemic sclerosis (SSc) disease...
January 9, 2018: Human Immunology
https://www.readbyqxmd.com/read/29329977/recent-insights-in-the-use-of-nanocarriers-for-the-oral-delivery-of-bioactive-proteins-and-peptides
#12
REVIEW
Patrícia Batista, Pedro M Castro, Ana Raquel Madureira, Bruno Sarmento, Manuela Pintado
Bioactive proteins and peptides have been used with either prophylactic or therapeutic purposes, presenting inherent advantages as high specificity and biocompatibility. Nanocarriers play an important role in the stabilization of proteins and peptides, offering enhanced buccal permeation and protection while crossing the gastrointestinal tract. Moreover, preparation of nanoparticles as oral delivery systems for proteins/peptides may include tailored formulation along with functionalization aiming bioavailability enhancement of carried proteins or peptides...
January 9, 2018: Peptides
https://www.readbyqxmd.com/read/29328806/tailoring-delivery-system-functionality-using-microfluidics
#13
Giovana Bonat Celli, Alireza Abbaspourrad
Various methods are currently used by the food industry to investigate and prepare emulsions, encapsulates, and other structures. However, these techniques do not allow accurate control over processing variables, which can negatively impact the resultant product properties. In this context, microfluidic technology has been proposed as a powerful tool for the development of innovative food structures, given its use of small amounts of fluids and high reproducibility, resulting in monodisperse droplets and particles...
January 12, 2018: Annual Review of Food Science and Technology
https://www.readbyqxmd.com/read/29328393/paediatric-virology-and-its-interaction-between-basic-science-and-clinical-practice-review
#14
Ioannis N Mammas, Anne Greenough, Maria Theodoridou, Anna Kramvis, Maria Rusan, Angeliki Melidou, Paraskevi Korovessi, Georgia Papaioannou, Alexia Papatheodoropoulou, Chryssie Koutsaftiki, Maria Liston, George Sourvinos, Demetrios A Spandidos
The 3rd Workshop on Paediatric Virology, which took place on October 7th, 2017 in Athens, Greece, highlighted the role of breast feeding in the prevention of viral infections during the first years of life. Moreover, it focused on the long-term outcomes of respiratory syncytial virus and rhinovirus infections in prematurely born infants and emphasised the necessity for the development of relevant preventative strategies. Other topics that were covered included the vaccination policy in relation to the migration crisis, mother‑to‑child transmission of hepatitis B and C viruses, vaccination against human papilloma viruses in boys and advances on intranasal live‑attenuated vaccination against influenza...
January 4, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29327746/silk-nanoparticles-from-inert-supports-to-bioactive-natural-carriers-for-drug-delivery
#15
REVIEW
Barbara Crivelli, Sara Perteghella, Elia Bari, Milena Sorrenti, Giuseppe Tripodo, Theodora Chlapanidas, Maria Luisa Torre
Silk proteins have been studied and employed for the production of drug delivery (nano)systems. They show excellent biocompatibility, controllable biodegradability and non-immunogenicity and, if needed, their properties can be modulated by blending with other polymers. Silk fibroin (SF), which forms the inner core of silk, is a (bio)material officially recognized by the Food and Drug Administration for human applications. Conversely, the potential of silk sericin (SS), which forms the external shell of silk, could still be considered under evaluation...
January 12, 2018: Soft Matter
https://www.readbyqxmd.com/read/29327257/biomechanical-characterisation-of-bone-anchored-implant-systems-for-amputation-limb-prostheses-a-systematic-review
#16
REVIEW
Alexander Thesleff, Rickard Brånemark, Bo Håkansson, Max Ortiz-Catalan
Bone-anchored limb prostheses allow for the direct transfer of external loads from the prosthesis to the skeleton, eliminating the need for a socket and the associated problems of poor fit, discomfort, and limited range of movement. A percutaneous implant system for direct skeletal attachment of an external limb must provide a long-term, mechanically stable interface to the bone, along with an infection barrier to the external environment. In addition, the mechanical integrity of the implant system and bone must be preserved despite constant stresses induced by the limb prosthesis...
January 11, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29327248/introducing-new-technology-safely-into-urological-practice
#17
Siska Van Bruwaene, Benjamin Namdarian, Ben Challacombe, Ben Eddy, Ignace Billiet
PURPOSE: Surgical innovation is necessary to ensure continued improvement in patient care. However, several challenges unique to the surgical craft are encountered during the development and validation of such new technology. This article highlights some of these challenges and gives an overview of existing solutions. METHODS: A Pubmed review was performed about the "introduction of new technology" to identify challenges. Cross-referencing was used to explore the possible solutions per challenge...
January 11, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29325211/uptake-and-intracellular-fate-of-engineered-nanoparticles-in-mammalian-cells-capabilities-and-limitations-of-transmission-electron-microscopy-polymer-based-nanoparticles
#18
REVIEW
Martin Reifarth, Stephanie Hoeppener, Ulrich S Schubert
In order to elucidate mechanisms of nanoparticle (NP)-cell interactions, a detailed knowledge about membrane-particle interactions, intracellular distributions, and nucleus penetration capabilities, etc. becomes indispensable. The utilization of NPs as additives in many consumer products, as well as the increasing interest of tailor-made nanoobjects as novel therapeutic and diagnostic platforms, makes it essential to gain deeper insights about their biological effects. Transmission electron microscopy (TEM) represents an outstanding method to study the uptake and intracellular fate of NPs, since this technique provides a resolution far better than the particle size...
January 11, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29324626/vascular-effects-of-adrenomedullin-and-the-anti-adrenomedullin-antibody-adrecizumab-in-sepsis
#19
Christopher Geven, Andreas Bergmann, Matthijs Kox, Peter Pickkers
Sepsis remains a major scientific and medical challenge, for which, apart from significant refinements in supportive therapy, treatment has barely changed over the last few decades. During sepsis, both vascular tone and vascular integrity are compromised, and contribute to the development of shock. The free circulating peptide adrenomedullin (ADM) is involved in regulation of the endothelial barrier function and tone of blood vessels. Several animal studies have shown that ADM administration improves outcome of sepsis...
January 10, 2018: Shock
https://www.readbyqxmd.com/read/29324240/cognitive-science-in-the-era-of-artificial-intelligence-a-roadmap-for-reverse-engineering-the-infant-language-learner
#20
Emmanuel Dupoux
Spectacular progress in the information processing sciences (machine learning, wearable sensors) promises to revolutionize the study of cognitive development. Here, we analyse the conditions under which 'reverse engineering' language development, i.e., building an effective system that mimics infant's achievements, can contribute to our scientific understanding of early language development. We argue that, on the computational side, it is important to move from toy problems to the full complexity of the learning situation, and take as input as faithful reconstructions of the sensory signals available to infants as possible...
January 8, 2018: Cognition
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