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https://www.readbyqxmd.com/read/28213380/complex-formation-with-pentraxin-2-regulates-factor-x-plasma-levels-and-macrophage-interactions
#1
Vincent Muczynski, Gabriel Aymé, Véronique Regnault, Marc Vasse, Delphine Borgel, Paulette Legendre, Amine Bazaa, Amélie Harel, Cécile Loubière, Peter J Lenting, Cécile V Denis, Olivier D Christophe
Recently, we have identified scavenger receptor-AI (SR-AI) as a receptor for coagulation factor X (FX), mediating the formation of a FX-reservoir at the macrophage-surface (Muczynski, Blood 2016 127:778). Here, we demonstrate that the FX/SR-AI-complex comprises a third protein, pentraxin-2. The presence of pentraxin-2 is essential to prevent internalization of FX by SR-AI, while the presence of FX is needed to interfere with internalization of pentraxin-2. Binding studies showed that FX, SR-AI and pentraxin-2 independently bind to each other (Kd,app: 0...
February 17, 2017: Blood
https://www.readbyqxmd.com/read/28212353/effect%C3%A2-of%C3%A2-fibre%C3%A2-supplementation%C3%A2-on%C3%A2-body%C3%A2-weight%C3%A2-and%C3%A2-composition-%C3%A2-frequency%C3%A2-of%C3%A2-eating%C3%A2-and%C3%A2-dietary%C3%A2-choice%C3%A2-in%C3%A2-overweight%C3%A2-individuals
#2
Vicky A Solah, Deborah A Kerr Wendy J Hunt, Stuart K Johnson, Carol J Boushey, Edward J Delp, Xingqiong Meng, Roland J Gahler, Anthony P James, Aqif S Mukhtar, Haelee K Fenton, Simon Wood
Fibre supplementation can potentially reduce energy intake and contribute to weight loss. The mechanism may be reduced frequency of eating, resulting in reduced food consumption. The objective of this research was to determine the effectiveness of fibre supplementation with PolyGlycopleX® (PGX®), on body weight and composition, frequency of eating and dietary intake in 118 overweight adults. In a three-arm, parallel, blind, randomised controlled trial participants were randomised to one of three groups; 4...
February 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28209561/co-creating-and-evaluating-a-web-app-mapping-real-world-health-care-services-for-students-the-servi-share-protocol
#3
Ilaria Montagni, Emmanuel Langlois, Jérôme Wittwer, Christophe Tzourio
BACKGROUND: University students aged 18-30 years are a population group reporting low access to health care services, with high rates of avoidance and delay of medical care. This group also reports not having appropriate information about available health care services. However, university students are at risk for several health problems, and regular medical consultations are recommended in this period of life. New digital devices are popular among the young, and Web-apps can be used to facilitate easy access to information regarding health care services...
February 16, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28208287/highly-uniform-gold-nanobipyramids-for-ultrasensitive-colorimetric-detection-of-influenza-virus
#4
Shaohua Xu, Wenjun Ouyang, Peisi Xie, Yi Lin, Bin Qiu, Zhenyu Lin, Guonan Chen, Longhua Guo
Gold nanoparticles (AuNPs) have been frequently utilized for the construction of diverse colorimetric biosensors. Normally, AuNPs with sharp edges could have better sensitivity. However, the poor monodipersity of AuNPs with sharp edges seriously confines their utility for colorimetric biosensing. Herein, we demonstrate the utility of highly uniform gold nanobipyramids (Au NBPs) for ultrasensitive colorimetric detection of H5N1 virus. The proposed method is based on the fact that alkaline phosphatase (ALP) could catalyze the decomposition of 4-aminophenyl phosphate (4-APP) to generate 4-aminophenol (4-AP), which would then reduce silver nitrate to metal silver and then deposited on Au NBPs...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28197891/simple-generalisation-of-a-mesophyll-resistance-model-for-various-intracellular-arrangements-of-chloroplasts-and-mitochondria-in-c3-leaves
#5
Xinyou Yin, Paul C Struik
The classical definition of mesophyll conductance (g m) represents an apparent parameter (g m,app) as it places (photo)respired CO2 at the same compartment where the carboxylation by Rubisco takes place. Recently, Tholen and co-workers developed a framework, in which g m better describes a physical diffusional parameter (g m,dif). They partitioned mesophyll resistance (r m,dif = 1/g m,dif) into two components, cell wall and plasmalemma resistance (r wp) and chloroplast resistance (r ch), and showed that g m,app is sensitive to the ratio of photorespiratory (F) and respiratory (R d) CO2 release to net CO2 uptake (A): g m,app = g m,dif/[1 + ω(F + R d)/A], where ω is the fraction of r ch in r m,dif...
February 14, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/28197073/association-of-trka-and-app-is-promoted-by-ngf-and-reduced-by-cell-death-promoting-agents
#6
Nadia Canu, Ilaria Pagano, Luca Rosario La Rosa, Marsha Pellegrino, Maria Teresa Ciotti, Delio Mercanti, Fabiola Moretti, Valentina Sposato, Viviana Triaca, Carla Petrella, Ichiro N Maruyama, Andrea Levi, Pietro Calissano
The amyloid precursor protein (APP) interacts with the tropomyosin receptor kinase A (TrkA) in normal rat, mouse, and human brain tissue but not in Alzheimer's disease (AD) brain tissue. However, it has not been reported whether the two proteins interact directly, and if so, which domains are involved. Clarifying these points will increase our understanding of the role and regulation of the TrkA/APP interaction in normal brain functioning as well as in AD. Here we addressed these questions using bimolecular fluorescence complementation (BiFC) and the proximity ligation assay (PLA)...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28195570/to-use-or-not-to-use-compulsive-behavior-and-its-role-in-smartphone-addiction
#7
Y-H Lin, Y-C Lin, S-H Lin, Y-H Lee, P-H Lin, C-L Chiang, L-R Chang, C C H Yang, T B J Kuo
Global smartphone penetration has led to unprecedented addictive behaviors. To develop a smartphone use/non-use pattern by mobile application (App) in order to identify problematic smartphone use, a total of 79 college students were monitored by the App for 1 month. The App-generated parameters included the daily use/non-use frequency, the total duration and the daily median of the duration per epoch. We introduced two other parameters, the root mean square of the successive differences (RMSSD) and the Similarity Index, in order to explore the similarity in use and non-use between participants...
February 14, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28192196/quantification-of-various-app-mrna-isoforms-and-epistasis-in-lesch-nyhan-disease
#8
Khue Vu Nguyen, William L Nyhan
The present work is the development of a simple and specific kinetic method based on RT-PCR technique coupled with direct sequencing for quantification of various amyloid precursor protein-mRNA isoforms (APP-mRNA isoforms) in biological samples, especially for identifying the most abundant one that may decisive for the normal status or disease risk. Application of this kinetic method to the Lesch-Nyhan disease (LND) was performed and results indicated an epistasis between mutated hypoxanthine phosphoribosyltransferase1 (HPRT1) and APP genes...
February 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28191738/the-role-of-neuroinflammation-and-amyloid-in-cognitive-impairment-in-an-app-ps1-transgenic-mouse-model-of-alzheimer-s-disease
#9
Shenghua Zhu, Junhui Wang, Yanbo Zhang, Jue He, Jiming Kong, Jun-Feng Wang, Xin-Min Li
AIMS: Both amyloid deposition and neuroinflammation appear in the early course of Alzheimer's disease (AD). However, the progression of neuroinflammation and its relationship with amyloid deposition and behavioral changes have not been fully elucidated. A better understanding the role of neuroinflammation in AD might extend our current knowledge to therapeutic intervention possibilities. METHODS: This study systematically characterized changes in behavioral abnormalities in APP/PS1 transgenic mice...
February 12, 2017: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/28183246/solid-state-structure-of-abeta-ab-in-alzheimer-s-disease
#10
Junxia Lu, Xing-Qi Dong, Jian-Jun Zhang
Alzheimer's disease (AD) has become the most common neurodegenerative disease. The deposition of amyloid fibrils in the brain is one of the characteristics of AD. The fibrils are composed of amyloid-b peptide (Ab). Ab is produced through a series event of protease cleavage of a transmembrane protein called β-amyloid precursor protein (APP) which is commonly expressed in the brain. The production of Ab and its propensity to aggregation to form oligomers and fibrils are believed to initiate a sequence of events that lead to AD dementia...
February 8, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28179721/professional-identity-formation-in-an-advanced-pharmacy-practice-experience-emphasizing-self-authorship
#11
Jessica L Johnson, Sheila Chauvin
Objective. To examine the extent to which reflective essays written by graduating pharmacy students revealed professional identity formation and self-authorship development. Design. Following a six-week advanced pharmacy practice experience (APPE) grounded in Baxter-Magolda's Learning Partnerships Model of self-authorship development, students completed a culminating reflective essay on their rotation experiences and professional identity formation. Assessment. Thematic and categorical analysis of 41 de-identified essays revealed nine themes and evidence of all Baxter-Magolda's domains and phases of self-authorship...
December 25, 2016: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/28179215/mixed-methods-analysis-of-factors-impacting-use-of-a-postoperative-mhealth-app
#12
Aaron R Scott, Elizabeth A Alore, Aanand D Naik, David H Berger, James W Suliburk
BACKGROUND: Limited communication and care coordination following discharge from hospitals may contribute to surgical complications. Smartphone apps offer a novel mechanism for communication and care coordination. However, factors which may affect patient app use in a postoperative, at-home setting are poorly understood. OBJECTIVE: The objectives of this study were to (1) gauge interest in smartphone app use among patients after colorectal surgery and (2) better understand factors affecting patient app use in a postoperative, at-home setting...
February 8, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28176625/protective-effects-of-huang-lian-jie-du-tang-on-a%C3%AE-25-35-induced-memory-deficits-and-oxidative-stress-in-male-rats
#13
Wenbin Wu, Shuling Xie, Bin Li, Kun Yang, Xuehui Liu, Baiyang Li
BACKGROUND: Alzheimer's disease is a neurodegenerative disorder characterized by progressive cognitive deterioration and is the most common cause of dementia. Extracellular β-amyloid deposit in senile plaques is the most characteristic pathological hallmark. β-amyloid (Aβ) accumulation is associated with neurodegeneration and involved in memory impairment associated with Alzheimer's disease. It can also induce intracellular reactive oxygen species (ROS) production, which results in neurodegeneration and immune response...
February 6, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28174059/alterations-of-myelin-morphology-and-oligodendrocyte-development-in-early-stage-of-alzheimer-s-disease-mouse-model
#14
Yu Wu, Yuanlin Ma, Zhuo Liu, Qi Geng, Zexin Chen, Yan Zhang
Alzheimer's disease (AD) is the most common cause to dementia and predicted to influence about 35 million people by the end of 2050. In this study, we discover alterations of myelin morphology in hippocampus tissues of 2-month-old APP/PS1 mouse. Myelin sheath is thicker and internodal distance is shorter in APP/PS1 mouse. Oligodendrocytes, differentiated from oligodendrocytes progenitor cells (OPCs), are responsible for formation and maintenance of myelin sheath in central nervous system (CNS). Our current results demonstrate that the oligodendrocytes development is disordered in 2-month-old APP/PS1 mouse...
February 6, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28173876/high-plasticity-of-axonal-pathology-in-alzheimer-s-disease-mouse-models
#15
Lidia Blazquez-Llorca, Susana Valero-Freitag, Eva Ferreira Rodrigues, Ángel Merchán-Pérez, J Rodrigo Rodríguez, Mario M Dorostkar, Javier DeFelipe, Jochen Herms
Axonal dystrophies (AxDs) are swollen and tortuous neuronal processes that are associated with extracellular depositions of amyloid β (Aβ) and have been observed to contribute to synaptic alterations occurring in Alzheimer's disease. Understanding the temporal course of this axonal pathology is of high relevance to comprehend the progression of the disease over time. We performed a long-term in vivo study (up to 210 days of two-photon imaging) with two transgenic mouse models (dE9xGFP-M and APP-PS1xGFP-M)...
February 7, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28168961/the-amyloid-precursor-protein-intracellular-domain-is-an-effector-molecule-of-metaplasticity
#16
Emilie Trillaud-Doppia, Jannic Boehm
BACKGROUND: Human studies and mouse models of Alzheimer's disease suggest that the amyloid precursor protein (APP) can cause changes in synaptic plasticity and is contributing to the memory deficits seen in Alzheimer's disease. While most of these studies attribute these changes to the APP cleavage product Aβ, in recent years it became apparent that the APP intracellular domain (APP-ICD) might play a role in regulating synaptic plasticity. METHODS: To separate the effects of APP-ICD on synaptic plasticity from Aβ-dependent effects, we created a chimeric APP in which the Aβ domain is exchanged for its homologous domain from the amyloid precursor-like protein 2...
December 22, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28167961/real-time-fall-risk-assessment-using-functional-reach-test
#17
Brian Williams, Brandon Allen, Zhen Hu, Hanna True, Jin Cho, Austin Harris, Nancy Fell, Mina Sartipi
Falls are common and dangerous for survivors of stroke at all stages of recovery. The widespread need to assess fall risk in real time for individuals after stroke has generated emerging requests for a reliable, inexpensive, quantifiable, and remote clinical measure/tool. In order to meet these requests, we explore the Functional Reach Test (FRT) for real-time fall risk assessment and implement the FRT function in mStroke, a real-time and automatic mobile health system for poststroke recovery and rehabilitation...
2017: International Journal of Telemedicine and Applications
https://www.readbyqxmd.com/read/28167259/memantine-reduces-the-production-of-amyloid-%C3%AE-peptides-through-modulation-of-amyloid-precursor-protein-trafficking
#18
Kaori Ito, Takuya Tatebe, Kunimichi Suzuki, Takashi Hirayama, Maki Hayakawa, Hideo Kubo, Taisuke Tomita, Mitsuhiro Makino
Memantine, an uncompetitive glutamatergic N-methyl-D-aspartate (NMDA) receptor antagonist, is widely used as medication for the treatment of Alzheimer's disease (AD). It has been reported that memantine reduces amyloid-β peptide (Aβ) levels in both neuronal cultures and in brains of animal models of AD. However, the underlying mechanism of these effects is unclear. Here we examined the effect of memantine on Aβ production. Memantine was administered to 9-month-old Tg2576 mice, a transgenic mouse model of AD, at 10 or 20mg/kg/day in drinking water for 1 month...
February 4, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28165225/initial-substrate-binding-of-%C3%AE-secretase-the-role-of-substrate-flexibility
#19
Shu Li, Wan Zhang, Wei Han
γ-Secretase cleaves transmembrane domains (TMD) of amyloid precursor protein (APP), producing pathologically relevant amyloid-β proteins. Initial substrate binding represents a key step of the γ-secretase cleavage whose mechanism remains elusive. Through long timescale coarse-grained and atomic simulations, we have found that the APP TMD can bind to the catalytic subunit presenilin 1 (PS1) on an extended surface covering PS1's TMD2/6/9 and PAL motif that are all known to be essential for enzymatic activity...
February 6, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28164839/apps-for-radiation-oncology-a-comprehensive-review
#20
REVIEW
J J Calero, L F Oton, C A Oton
INTRODUCTION: Software applications executed on a smart-phone or mobile device ("Apps") are increasingly used by oncologists in their daily work. A comprehensive critical review was conducted on Apps specifically designed for Radiation Oncology, which aims to provide scientific support for these tools and to guide users in choosing the most suited to their needs. MATERIAL AND METHODS: A systematic search was conducted in mobile platforms, iOS and Android, returning 157 Apps...
February 2017: Translational Oncology
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