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https://www.readbyqxmd.com/read/28427400/monitoring-mandibular-movements-to-detect-cheyne-stokes-breathing
#1
Jean-Benoît Martinot, Jean-Christian Borel, Nhat-Nam Le-Dong, Hervé Jean-Pierre Guénard, Valerie Cuthbert, Philip E Silkoff, David Gozal, Jean-Louis Pepin
BACKGROUND: The patterns of mandibular movements (MM) during sleep can be used to identify increased respiratory effort periodic large-amplitude MM (LPM), and cortical arousals associated with "sharp" large-amplitude MM (SPM). We hypothesized that Cheyne Stokes breathing (CSB) may be identified by periodic abnormal MM patterns. The present study aims to evaluate prospectively the concordance between CSB detected by periodic MM and polysomnography (PSG) as gold-standard. The present study aims to evaluate prospectively the concordance between CSB detected by periodic MM and polysomnography (PSG) as gold-standard...
April 20, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28398243/neonatal-citrulline-supplementation-and-later-exposure-to-a-high-fructose-diet-in-rats-born-with-a-low-birth-weight-a-preliminary-report
#2
Nhat-Thang Tran, Marie-Cécile Alexandre-Gouabau, Anthony Pagniez, Khadija Ouguerram, Clair-Yves Boquien, Norbert Winer, Dominique Darmaun
A low birth weight (LBW) leads to a higher risk of metabolic syndrome in adulthood. Literature suggests that citrulline supplementation in adulthood prevents the effect of a high fructose diet on energy metabolism. Whether neonatal citrulline supplementation would alter early growth or energy metabolism in the long-term in rats with LBW is unknown. LBW pups born from dams fed a low (4%) protein diet, were nursed by normally-fed dams and received isonitrogenous supplements of either l-citrulline or l-alanine by gavage from the sixth day of life until weaning, and were subsequently exposed to 10%-fructose in drinking water from weaning to 90 days of age...
April 11, 2017: Nutrients
https://www.readbyqxmd.com/read/28356764/study-of-nasal-exhaled-nitric-oxide-levels-in-diagnosis-of-allergic-rhinitis-in-subjects-with-and-without-asthma
#3
Sy Duong-Quy, Thuc Vu-Minh, Thong Hua-Huy, Tram Tang-Thi-Thao, Khiet Le-Quang, Dinh Tran-Thanh, Nhu Doan-Thi-Quynh, Nhat-Nam Le-Dong, Timothy J Craig, Anh-Tuan Dinh-Xuan
BACKGROUND: The measure of fractional exhaled nitric oxide (FENO) in the airways is a useful tool to guide the diagnosis and titration of inhaled corticosteroids in patients with asthma. However, its role in diagnosis of allergic rhinitis (AR), especially in subjects with asthma, is not well established. OBJECTIVE: To study the cutoff of nasal FENO in the diagnosis of subjects with AR and AR-asthma compared to age-matched subjects without AR or asthma and its correlations with the clinical and functional characteristics...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28338052/dissociable-diffusion-mri-patterns-of-white-matter-microstructure-and-connectivity-in-alzheimer-s-disease-spectrum
#4
Nhat Trung Doan, Andreas Engvig, Karin Persson, Dag Alnæs, Tobias Kaufmann, Jaroslav Rokicki, Aldo Córdova-Palomera, Torgeir Moberget, Anne Brækhus, Maria Lage Barca, Knut Engedal, Ole A Andreassen, Geir Selbæk, Lars T Westlye
Recent efforts using diffusion tensor imaging (DTI) have documented white matter (WM) alterations in Alzheimer's disease (AD). The full potential of whole-brain DTI, however, has not been fully exploited as studies have focused on individual microstructural indices independently. In patients with AD (n = 79), mild (MCI, n = 55) and subjective (SCI, n = 30) cognitive impairment, we applied linked independent component analysis (LICA) to model inter-subject variability across five complementary DTI measures (fractional anisotropy (FA), axial/radial/mean diffusivity, diffusion tensor mode), two crossing fiber measures estimated using a multi-compartment crossing-fiber model reflecting the volume fraction of the dominant (f1) and non-dominant (f2) diffusion orientation, and finally, connectivity density obtained from full-brain probabilistic tractography...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28335206/cytotoxic-induction-and-photoacoustic-imaging-of-breast-cancer-cells-using-astaxanthin-reduced-gold-nanoparticles
#5
Subramaniyan Bharathiraja, Panchanathan Manivasagan, Nhat Quang Bui, Yun-Ok Oh, In Gweon Lim, Suhyun Park, Junghwan Oh
Astaxanthin, a kind of photosynthetic pigment, was employed for gold nanoparticle formation. Nanoparticles were characterized using Ulteraviolet-Visible (UV-Vis) spectroscopy, transmission electron microscopy, and X-ray diffraction, and the possible presence of astaxanthin functional groups were analyzed by Fourier transform infrared spectroscopy (FTIR). The cytotoxic effect of synthesized nanoparticles was evaluated against MDA-MB-231 (human breast cancer cells) using a tetrazolium-based assay, and synthesized nanoparticles exhibited dose-dependent toxicity...
April 20, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334664/high-rate-nitrogen-removal-by-anammox-internal-circulation-reactor-ic-for-old-landfill-leachate-treatment
#6
The Nhat Phan, Thi Thanh Van Truong, Nhu Biec Ha, Phuoc Dan Nguyen, Xuan Thanh Bui, Bao Trong Dang, Van Tuan Doan, Joonhong Park, Wenshan Guo, Huu Hao Ngo
This study aimed to evaluate the performance of a high rate nitrogen removal lab-scale ANAMMOX reactor, namely Internal Circulation (IC) reactor, for old landfill leachate treatment. The reactor was operated with pre-treated leachate from a pilot Partial Nitritation Reactor (PNR) using a high nitrogen loading rate ranging from 2 to 10kgNm(-3)d(-1). High rate removal of nitrogen (9.52±1.11kgNm(-3)d(-1)) was observed at an influent nitrogen concentration of 1500mgNL(-1). The specific ANAMMOX activity was found to be 0...
February 28, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28326853/limonoid-from-the-rhizomes-of-luvunga-scandens-roxb-buch-ham
#7
Tan Phat Nguyen, Nhat Phan Minh, Trong Bui Dat, Tien Dung Le, Minh An Tran Nguyen, Thi Nhat Trinh Pham, Dinh Mai Tri
For first time, the chemical constituents of the rhizomes of Luvunga scandens (Roxb.) Buch. Ham. were investigated and led to the isolation of one new limonoid named Luvunga A (1), together with seven known compounds, including one limonoid (2) and six coumarins (3-8) were isolated for the first time from the species L. scandens by various chromatography methods. Their chemical structures were elucidated by IR, UV, HR-ESI-MS, NMR 1D and 2D experiments and compared with literatures.
March 22, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28286931/association-between-baseline-frailty-and-driving-status-over-time-a-secondary-analysis-of-the-national-health-and-aging-trends-study
#8
Elizabeth G Bond, Laura L Durbin, Jodi A Cisewski, Min Qian, Jack M Guralnik, Judith D Kasper, Thelma J Mielenz
BACKGROUND: Continued automobile driving is important for the wellbeing and independence of older adults. Frailty has been associated with a variety of negative health outcomes, but studies are lacking on the potential association between frailty and driving status. The present study uses data from The National Health and Aging Trends Study (NHATS) to assess if the presence of frailty is associated with being a current non-driver. METHODS: NHATS is a nationally representative cohort study of Medicare beneficiaries (aged ≥65) that have been followed since 2011...
December 2017: Injury Epidemiology
https://www.readbyqxmd.com/read/28278658/new-naphthalene-derivative-from-the-leaves-of-cassia-grandis-l
#9
Pham Thi Nhat Trinh, Ngoc Quoc Luan, Mai Dinh Tri, Vu Duy Khanh, Nguyen Huu An, Phan Nhat Minh, Pham Ngoc An, Nguyen Thi Le Thuy, Nguyen Kim Phi Phung, Le Tien Dung
Cassia grandis is used for the treatment of skin disorders, back pain, aches, etc. in Vietnamese traditional medicine. In this paper, phytochemicals of the leaves were investigated. A new naphthalene derivative (1, cassgranon D) and, seven known compounds rutin (2), afzelin (3), quercitrin (4), epicatechin (5), (-)-epiafzelechin (6), isoquercitrin (7) and aloe emodin (8) were isolated from the ethyl acetate and methanol extracts. Their structures were elucidated by spectral evidences (UV, IR, MS, (1)H, (13)C, DEPT, HSQC and HMBC NMR), as well as by comparing with published data...
February 16, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28269417/robot-assisted-retinal-vein-cannulation-with-force-based-puncture-detection-micron-vs-the-steady-hand-eye-robot
#10
Berk Gonenc, Nhat Tran, Peter Gehlbach, Russell H Taylor, Iulian Iordachita
Retinal vein cannulation is a demanding procedure where therapeutic agents are injected into occluded retina veins. The feasibility of this treatment is limited due to challenges in identifying the moment of venous puncture, achieving cannulation and maintaining it throughout the drug delivery period. In this study, we integrate a force-sensing microneedle with two distinct robotic systems: the handheld micromanipulator Micron, and the cooperatively controlled Steady-Hand Eye Robot (SHER). The sensed tool-to-tissue interaction forces are used to detect venous puncture and extend the robots' standard control schemes with a new position holding mode (PHM) that assists the operator hold the needle position fixed and maintain cannulation for a longer time with less trauma on the vasculature...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28252638/multifunctional-biocompatible-chitosan-polypyrrole-nanocomposites-as-novel-agents-for-photoacoustic-imaging-guided-photothermal-ablation-of-cancer
#11
Panchanathan Manivasagan, Nhat Quang Bui, Subramaniyan Bharathiraja, Madhappan Santha Moorthy, Yun-Ok Oh, Kyeongeun Song, Hansu Seo, Min Yoon, Junghwan Oh
Cancer nanotechnology is emerging as one of the promising strategies combining photothermal therapy (PTT) and photoacoustic imaging (PAI) for the treatment of breast cancer and it has received considerable attention in the recent years because it is minimally invasive, prevents damage to non-targeted regions, permits fast recovery, and involves breast cancer imaging. The present study demonstrates multifunctional biocompatible chitosan-polypyrrole nanocomposites (CS-PPy NCs) as novel agents for photoacoustic imaging-guided photothermal ablation of cancer because of their biocompatibility, conductivity, stability, and strong near-infrared (NIR) absorbance...
March 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28228451/african-american-stroke-survivors-more-caregiving-time-but-less-caregiving-burden
#12
Lesli E Skolarus, Vicki A Freedman, Chunyang Feng, James F Burke
BACKGROUND: Blacks have higher stroke incidence and experience greater poststroke disability than whites. To optimize care for stroke survivors, it is important to understand the amount of care that they receive and the implications for stroke caregivers. METHODS AND RESULTS: Data from 2 nationally representative, population-based studies, the NHATS (National Health and Aging Trends Study) linked to the NSOC (National Study of Caregiving), were used to identify elderly stroke survivors and their caregivers...
February 2017: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28227660/robot-assisted-retinal-vein-cannulation-with-force-based-puncture-detection-micron-vs-the-steady-hand-eye-robot
#13
Berk Gonenc, Nhat Tran, Peter Gehlbach, Russell H Taylor, Iulian Iordachita, Berk Gonenc, Nhat Tran, Peter Gehlbach, Russell H Taylor, Iulian Iordachita, Nhat Tran, Russell H Taylor, Iulian Iordachita, Berk Gonenc, Peter Gehlbach
Retinal vein cannulation is a demanding procedure where therapeutic agents are injected into occluded retina veins. The feasibility of this treatment is limited due to challenges in identifying the moment of venous puncture, achieving cannulation and maintaining it throughout the drug delivery period. In this study, we integrate a force-sensing microneedle with two distinct robotic systems: the handheld micromanipulator Micron, and the cooperatively controlled Steady-Hand Eye Robot (SHER). The sensed tool-to-tissue interaction forces are used to detect venous puncture and extend the robots' standard control schemes with a new position holding mode (PHM) that assists the operator hold the needle position fixed and maintain cannulation for a longer time with less trauma on the vasculature...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28218917/delayed-stabilization-and-individualization-in-connectome-development-are-related-to-psychiatric-disorders
#14
Tobias Kaufmann, Dag Alnæs, Nhat Trung Doan, Christine Lycke Brandt, Ole A Andreassen, Lars T Westlye
The brain functional connectome constitutes a unique fingerprint allowing identification of individuals among a pool of people. Here we establish that the connectome develops into a more stable, individual wiring pattern during adolescence and demonstrate that a delay in this network tuning process is associated with reduced mental health in the formative years of late neurodevelopment.
February 20, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28210993/impact-of-caregiver-activities-and-social-supports-on-multidimensional-caregiver-burden-analyses-from-nationally-representative-surveys-of-cancer-patients-and-their-caregivers
#15
Michael T Halpern, Mallorie H Fiero, Melanie L Bell
PURPOSE: Informal caregivers of individuals with cancer may experience substantial burdens. To develop interventions to support these caregivers, it is crucial to quantify and understand the domains of burdens potentially experienced by caregivers and factors contributing to each domain. METHODS: Using data from two national surveys, the National Survey of Caregiving (NSOC) linked to the National Health and Aging Trends Survey (NHATS), we identified all participants in the NHATS diagnosed with cancer who had a caregiver participating in the NSOC...
February 16, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28199888/in%C3%A2-vivo-assessment-of-iron-content-of-the-cerebral-cortex-in-healthy-aging-using-7-tesla-t2-weighted-phase-imaging
#16
Mathijs Buijs, Nhat Trung Doan, Sanneke van Rooden, Maarten J Versluis, Baldur van Lew, Julien Milles, Jeroen van der Grond, Mark A van Buchem
Accumulation of brain iron has been suggested as a biomarker of neurodegeneration. Increased iron has been seen in the cerebral cortex in postmortem studies of neurodegenerative diseases and healthy aging. Until recently, the diminutive thickness of the cortex and its relatively low iron content have hampered in vivo study of cortical iron accumulation. Using phase images of a T2*-weighted sequence at ultrahigh field strength (7 Tesla), we examined the iron content of 22 cortical regions in 70 healthy subjects aged 22-80 years...
May 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28197922/coordination-of-cellular-localization-dependent-effects-of-sumoylation-in-regulating-cardiovascular-and-neurological-diseases
#17
Jun-Ichi Abe, Uday G Sandhu, Nguyet Minh Hoang, Manoj Thangam, Raymundo A Quintana-Quezada, Keigi Fujiwara, Nhat Tu Le
Sumoylation, a reversible post-transcriptional modification process, of proteins are involved in cellular differentiation, growth, and even motility by regulating various protein functions. Sumoylation is not limited to cytosolic proteins as recent evidence shows that nuclear proteins, those associated with membranes, and mitochondrial proteins are also sumoylated. Moreover, it is now known that sumoylation plays an important role in the process of major human ailments such as malignant, cardiovascular and neurological diseases...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28192906/coupling-high-throughput-microfluidics-and-small-angle-x-ray-scattering-to-study-protein-crystallization-from-solution
#18
Nhat Pham, Dimitri Radajewski, Adam Round, Martha Brennich, Petra Pernot, Béatrice Biscans, Françoise Bonneté, Sébastien Teychené
In this work, we propose the combination of small-angle X-ray scattering (SAXS) and high throughput, droplet based microfluidics as a powerful tool to investigate macromolecular interactions, directly related to protein solubility. For this purpose, a robust and low cost microfluidic platform was fabricated for achieving the mixing of proteins, crystallization reagents, and buffer in nanoliter volumes and the subsequent generation of nanodroplets by means of a two phase flow. The protein samples are compartmentalized inside droplets, each one acting as an isolated microreactor...
February 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28152788/factors-affecting-multidimensional-caregiver-burden-results-from-national-surveys
#19
Mallorie Fiero, Melanie Bell
301 Background: Quality of care for individuals with cancer is affected by the burden on their caregivers. For high quality care, it is important to understand domains of caregiver burden and factors affecting this burden. METHODS: Using data from two national surveys, the National Survey of Caregiving (NSOC) linked to the National Health and Aging Trends Survey (NHATS), we identified all participants in the NHATS diagnosed with cancer who had a caregiver participating in the NSOC. Twenty-two items in the NSOC related to caregiver health, mood and outlook were included in factor analysis to develop scales capturing domains of burden...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28145627/highly-conducting-spaced-tio2-nanotubes-enable-defined-conformal-coating-with-nanocrystalline-nb2-o5-and-high-performance-supercapacitor-applications
#20
Selda Ozkan, Nhat Truong Nguyen, Imgon Hwang, Anca Mazare, Patrik Schmuki
Establishing self-organized spacing between TiO2 nanotubes allows for highly conformal Nb2 O5 deposition that can be adjusted to optimized supercapacitive behavior.
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