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https://www.readbyqxmd.com/read/28806865/glucose-sensitive-holographic-bio-sensors-fundamentals-and-applications
#1
Marjan Heidari, Bahareh Dabirmanesh, Hossein Mahdavi, Khosro Khajeh
Nowadays sensors and especially biosensors play an important role in medical diagnosis and detection of food and environment contaminations. Biosensors’ facilities have been improved significantly by using technologies such as surface plasmon resonance, microfluidics, laser, and electrochemistry. These technologies are now available on chips in micro- and nano-scale and are capable of measuring the quantity of more than one analyte at once. One branch of these sensors is the holographic (bio)sensor. Reflection holographic sensors, which are optical devices fabricated based on Bragg’s law, can diffract light with specific wavelength as they absorb or release special ions or molecule depending on their polymer structure...
August 15, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28806864/study-of-physical-function-in-adolescents-with-haemophilia-the-so-fit-study
#2
K Khair, M Holland, M Bladen, A Griffioen, P McLaughlin, S von Mackensen
INTRODUCTION: Contemporary haemophilia care demands Patient-Reported Outcomes. SO-FIT is a UK multi-centre study, assessing self-reported function, health-related quality of life (HRQoL) and joint health in boys with severe haemophilia. METHODS: Subjective physical function (PedHAL, HEP-Test-Q) and HRQoL (Haemo-QoL Short Form [SF]) were assessed alongside joint health using the objective Haemophilia Joint Health Score (HJHS v2.1). Demographic and clinical data were collected...
August 14, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28806859/analysis-of-low-molecular-weight-compounds-using-maldi-and-ldi-tof-ms-direct-detection-of-active-pharmaceutical-ingredients-in-different-formulations
#3
João L Bronzel, Cintia D F Milagre, Humberto M S Milagre
Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) is a high throughput, easy to use analytical technique. The simple sample preparation of this technique and its tolerance to the presence of contaminants are among its advantages. In contrast, depending on the matrix used, MALDI can ionize and generates ions in the low m/z range that complicate the interpretation of the spectra of low molecular weight compounds. To address this issue, one can envisage the use of tunable ionic matrices that can reduce the low m/z interferents...
August 14, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28806855/functional-stem-cell-integration-into-neural-networks-assessed-by-organotypic-slice-cultures
#4
David Forsberg, Charoensri Thonabulsombat, Johan Jäderstad, Linda Maria Jäderstad, Petri Olivius, Eric Herlenius
Re-formation or preservation of functional, electrically active neural networks has been proffered as one of the goals of stem cell-mediated neural therapeutics. A primary issue for a cell therapy approach is the formation of functional contacts between the implanted cells and the host tissue. Therefore, it is of fundamental interest to establish protocols that allow us to delineate a detailed time course of grafted stem cell survival, migration, differentiation, integration, and functional interaction with the host...
August 14, 2017: Current Protocols in Stem Cell Biology
https://www.readbyqxmd.com/read/28806839/-psychoanalysis-and-psychiatrie-enquete-expert-interviews-and-document-analysis
#5
Felicitas Petra Söhner, Heiner Fangerau, Thomas Becker
Background The purpose of this paper is to analyse the perception of the role of psychoanalysis and psychoanalysts in the coming about of the Psychiatrie-Enquete in the Federal Republic of Germany (West Germany). Methods We performed a qualitative content analysis of expert interviews with persons involved in the Enquete (or witnessing the events as mental health professionals active at the time), a selective literature review and an analysis of documents on the Enquete process. Results Expert interviews, relevant literature and documents point to a role of psychoanalysis in the Enquete process...
August 14, 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28806828/-prophylactic-plexus-catheter-treatment-in-operations-following-complex-regional-pain-syndrome-crps
#6
Florian Neubrech, Roderick Franciscus Pronk, Amir Khosrow Bigdeli, Christian Tapking, Ulrich Kneser, Leila Harhaus
Background This paper investigates and discusses the effect of perioperative plexus catheter treatment in former CRPS patients. Patients and Methods A retrospective matched-pair analysis was conducted on 10 CRPS patients with comparable injuries, who underwent surgery in the disease-free interval. In 10 cases, the procedure was performed with perioperative plexus catheter treatment (intervention group), whereas 10 patients did not receive perioperative plexus catheter treatment (control group). Results In the intervention group, after a follow-up time of 105 (20-184) days after the last surgical procedure, pain intensity on the visual analogue scale (VAS; 0 to 10) was 6...
August 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28806827/-functional-outcome-following-high-pressure-injection-injuries-of-the-hand
#7
Florian Neubrech, Christian A Radu, David Pauli, Berthold Bickert, Ulrich Kneser, Leila Harhaus
Background High-pressure injection injuries are devastating injuries that often lead to an amputation of the primarily affected finger. The available literature mainly focuses on amputation rates, while there is a lack of knowledge regarding functional results. Patients and Methods Between 1998 and 2016, 47 cases of high-pressure injection injuries of the hand were registered in our department. Out of these, data of 26 patients, all men with an average age of 42 (18-62) years, were included in a retrospective follow-up examination after 4 (1-12) years...
August 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28806819/indicators-of-dysphagia-in-aged-care-facilities
#8
Dai Pu, Thomas Murry, May C M Wong, Edwin M L Yiu, Karen M K Chan
Purpose: The current cross-sectional study aimed to investigate risk factors for dysphagia in elderly individuals in aged care facilities. Method: A total of 878 individuals from 42 aged care facilities were recruited for this study. The dependent outcome was speech therapist-determined swallowing function. Independent factors were Eating Assessment Tool score, oral motor assessment score, Mini-Mental State Examination, medical history, and various functional status ratings...
August 14, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28806782/the-use-of-18f-fluoro-deoxy-glucose-positron-emission-tomography-18f-fdg-pet-as-a-non-invasive-pharmacodynamic-biomarker-to-determine-the-minimally-pharmacologically-active-dose-of-azd8835-a-novel-pi3k%C3%AE-inhibitor
#9
Juliana Maynard, Sally-Ann Emmas, Francois-Xavier Ble, Herve Barjat, Emily Lawrie, Urs Hancox, Urszula M Polanska, Alison Pritchard, Kevin Hudson
BACKGROUND: The phosphatidyl inositol 3 kinase (PI3K), AKT and mammalian target of rapamycin (mTOR) signal transduction pathway is frequently de-regulated and activated in human cancer and is an important therapeutic target. AZD8835 is a PI3K inhibitor, with selectivity against PI3K α and δ isoforms, which is currently in Phase 1 clinical trials. 18F-Fluoro-deoxy-glucose positron emission tomography (18F-FDG PET) is a non-invasive pharmacodynamic imaging biomarker that has become an integral part of drug development...
2017: PloS One
https://www.readbyqxmd.com/read/28806780/the-arac-negative-regulator-family-modulates-the-activity-of-histone-like-proteins-in-pathogenic-bacteria
#10
Araceli E Santiago, Michael B Yan, Tracy H Hazen, Brooke Sauder, Mario Meza-Segura, David A Rasko, Melissa M Kendall, Fernando Ruiz-Perez, James P Nataro
The AraC Negative Regulators (ANR) comprise a large family of virulence regulators distributed among diverse clinically important Gram-negative pathogens, including Vibrio spp., Salmonella spp., Shigella spp., Yersinia spp., Citrobacter spp., and pathogenic E. coli strains. We have previously reported broad effects of the ANR members on regulators of the AraC/XylS family. Here, we interrogate possible broader effects of the ANR members on the bacterial transcriptome. Our studies focused on Aar (AggR-activated regulator), an ANR family archetype in enteroaggregative E...
August 14, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28806777/a-synthetic-sickness-screen-for-senescence-re-engagement-targets-in-mutant-cancer-backgrounds
#11
Claire J Cairney, Lauren S Godwin, Alan E Bilsland, Sharon Burns, Katrina H Stevenson, Lynn McGarry, John Revie, Jon D Moore, Ceri M Wiggins, Rebecca S Collinson, Clare Mudd, Elpida Tsonou, Mahito Sadaie, Dorothy C Bennett, Masashi Narita, Christopher J Torrance, W Nicol Keith
Senescence is a universal barrier to immortalisation and tumorigenesis. As such, interest in the use of senescence-induction in a therapeutic context has been gaining momentum in the past few years; however, senescence and immortalisation remain underserved areas for drug discovery owing to a lack of robust senescence inducing agents and an incomplete understanding of the signalling events underlying this complex process. In order to address this issue we undertook a large-scale morphological siRNA screen for inducers of senescence phenotypes in the human melanoma cell line A375P...
August 14, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28806774/fibroblast-growth-factor-receptor-1-mediates-internalization-of-pathogenic-spotted-fever-rickettsiae-into-host-endothelium
#12
Abha Sahni, Jignesh Patel, Hema P Narra, Casey L C Schroeder, David H Walker, Sanjeev K Sahni
Rickettsial infections continue to cause serious morbidity and mortality in severe human cases around the world. Host cell adhesion and invasion is an essential requisite for intracellular growth, replication, and subsequent dissemination of pathogenic rickettsiae. Heparan sulfate proteoglycans [HSPGs] facilitate the interactions between fibroblast growth factor(s) and their tyrosine kinase receptors resulting in receptor dimerization/activation and have been implicated in bacterial adhesion to target host cells...
2017: PloS One
https://www.readbyqxmd.com/read/28806773/quantitative-accuracy-of-177lu-spect-imaging-for-molecular-radiotherapy
#13
Emilio Mezzenga, Vincenzo D'Errico, Marco D'Arienzo, Lidia Strigari, Koutla Panagiota, Federica Matteucci, Stefano Severi, Giovanni Paganelli, Andrew Fenwick, David Bianchini, Francesco Marcocci, Anna Sarnelli
The purpose of this study is to investigate the optimal reference geometry for gamma camera calibration. Yet another question of interest was to assess the influence of the number of 3D Ordered Subsets Expectation Maximization (3D-OSEM) updates on activity quantification for SPECT imaging with 177Lu. The accuracy of 177Lu activity quantification was assessed both in small and in large objects. Two different reference geometries, namely a cylindrical homogeneous phantom and a Jaszczak 16 ml sphere surrounded by cold water, were used to determine the gamma camera calibration factor of a commercial SPECT/CT system...
2017: PloS One
https://www.readbyqxmd.com/read/28806770/increasing-creatine-kinase-activity-protects-against-hypoxia-reoxygenation-injury-but-not-against-anthracycline-toxicity-in-vitro
#14
Sevasti Zervou, Hannah J Whittington, Philip J Ostrowski, Fang Cao, Jack Tyler, Hannah A Lake, Stefan Neubauer, Craig A Lygate
The creatine kinase (CK) phosphagen system is fundamental to cellular energy homeostasis. Cardiomyocytes express three CK isoforms, namely the mitochondrial sarcomeric CKMT2 and the cytoplasmic CKM and CKB. We hypothesized that augmenting CK in vitro would preserve cell viability and function and sought to determine efficacy of the various isoforms. The open reading frame of each isoform was cloned into pcDNA3.1, followed by transfection and stable selection in human embryonic kidney cells (HEK293). CKMT2- CKM- and CKB-HEK293 cells had increased protein and total CK activity compared to non-transfected cells...
2017: PloS One
https://www.readbyqxmd.com/read/28806765/pka-activity-is-essential-for-relieving-the-suppression-of-hyphal-growth-and-appressorium-formation-by-mosfl1-in-magnaporthe-oryzae
#15
Yang Li, Xue Zhang, Shuai Hu, Huiquan Liu, Jin-Rong Xu
In the rice blast fungus Magnaporthe oryzae, the cAMP-PKA pathway regulates surface recognition, appressorium turgor generation, and invasive growth. However, deletion of CPKA failed to block appressorium formation and responses to exogenous cAMP. In this study, we generated and characterized the cpk2 and cpkA cpk2 mutants and spontaneous suppressors of cpkA cpk2 in M. oryzae. Our results demonstrate that CPKA and CPK2 have specific and overlapping functions, and PKA activity is essential for appressorium formation and plant infection...
August 14, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28806762/a-becn1-mutation-mediates-hyperactive-autophagic-sequestration-of-amyloid-oligomers-and-improved-cognition-in-alzheimer-s-disease
#16
Altea Rocchi, Soh Yamamoto, Tabitha Ting, Yuying Fan, Katherine Sadleir, Yigang Wang, Weiran Zhang, Sui Huang, Beth Levine, Robert Vassar, Congcong He
Impairment of the autophagy pathway has been observed during the pathogenesis of Alzheimer's disease (AD), a neurodegenerative disorder characterized by abnormal deposition of extracellular and intracellular amyloid β (Aβ) peptides. Yet the role of autophagy in Aβ production and AD progression is complex. To study whether increased basal autophagy plays a beneficial role in Aβ clearance and cognitive improvement, we developed a novel genetic model to hyperactivate autophagy in vivo. We found that knock-in of a point mutation F121A in the essential autophagy gene Beclin 1/Becn1 in mice significantly reduces the interaction of BECN1 with its inhibitor BCL2, and thus leads to constitutively active autophagy even under non-autophagy-inducing conditions in multiple tissues, including brain...
August 14, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28806760/endothelial-activation-and-dysfunction-in-severe-fever-with-thrombocytopenia-syndrome
#17
Xiao-Kun Li, Zhen-Dong Yang, Juan Du, Bo Xing, Ning Cui, Pan-He Zhang, Hao Li, Xiao-Ai Zhang, Qing-Bin Lu, Wei Liu
BACKGROUND: Pathogenesis of severe fever with thrombocytopenia syndrome (SFTS) has not been well described yet. Recent studies indicate that SFTSV could replicate in endothelial cells. Here we performed a case-control study to determine whether endothelial activation/dysfunction occurred in SFTSV infection and to identify the biomarkers reflecting endothelial dysfunction. METHODOLOGY/PRINCIPAL FINDINGS: In a case-control study of 134 SFTS patients and 68 healthy controls, serum levels of plasminogen activator inhibitor 1, tissue plasminogen activator, P-selectin, platelet endothelial cell adhesion molecular, CD40 ligand, E-selectin, vascular endothelial growth factor A, serum amyloid antigen 1 (SAA-1) and vascular cell adhesion molecular 1 were significantly enhanced in the patients than the controls (all P<0...
August 14, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28806756/generic-scalable-and-decentralized-fault-detection-for-robot-swarms
#18
Danesh Tarapore, Anders Lyhne Christensen, Jon Timmis
Robot swarms are large-scale multirobot systems with decentralized control which means that each robot acts based only on local perception and on local coordination with neighboring robots. The decentralized approach to control confers number of potential benefits. In particular, inherent scalability and robustness are often highlighted as key distinguishing features of robot swarms compared with systems that rely on traditional approaches to multirobot coordination. It has, however, been shown that swarm robotics systems are not always fault tolerant...
2017: PloS One
https://www.readbyqxmd.com/read/28806753/accelerometer-derived-physical-activity-and-sedentary-time-by-cancer-type-in-the-united-states
#19
Keith M Thraen-Borowski, Keith P Gennuso, Lisa Cadmus-Bertram
The 2003-2004 and 2005-2006 cycles of the National Health and Nutrition Examination Survey (NHANES) were among the first population-level studies to incorporate objectively measured physical activity and sedentary behavior, allowing for greater understanding of these behaviors. However, there has yet to be a comprehensive examination of these data in cancer survivors, including short- and long-term survivors of all cancer types. Therefore, the purpose of this analysis was to use these data to describe activity behaviors in short- and long-term cancer survivors of various types...
2017: PloS One
https://www.readbyqxmd.com/read/28806750/characterization-of-novel-bangle-lectin-from-photorhabdus-asymbiotica-with-dual-sugar-binding-specificity-and-its-effect-on-host-immunity
#20
Gita Jančaříková, Josef Houser, Pavel Dobeš, Gabriel Demo, Pavel Hyršl, Michaela Wimmerová
Photorhabdus asymbiotica is one of the three recognized species of the Photorhabdus genus, which consists of gram-negative bioluminescent bacteria belonging to the family Morganellaceae. These bacteria live in a symbiotic relationship with nematodes from the genus Heterorhabditis, together forming a complex that is highly pathogenic for insects. Unlike other Photorhabdus species, which are strictly entomopathogenic, P. asymbiotica is unique in its ability to act as an emerging human pathogen. Analysis of the P...
August 14, 2017: PLoS Pathogens
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