keyword
MENU ▼
Read by QxMD icon Read
search

magnetic

keyword
https://www.readbyqxmd.com/read/28214332/comparison-of-several-white-matter-tracts-in-feline-and-canine-brain-by-using-magnetic-resonance-diffusion-tensor-imaging
#1
Olivier Jacqmot, Bert Van Thielen, Alex Michotte, Inneke Willekens, Filip Verhelle, Peter Goossens, Filip De Ridder, Jan Pieter Clarys, Anne Vanbinst, Cindy Peleman, Johan de Mey
Recently, we published a first anatomical Diffusion Tensor Imaging (DTI) atlas regarding white matter tracts in the canine brain. The purpose of this study was to show the significance of DTI in the revelation of the white matter fibres in the feline brain (i.e. to obtain an anatomical DTI atlas of images) and to descriptively compare these to previously obtained white matter fibre images of the canine brain. DTI MR Images of 4 cats euthanised for reasons other than neurological disorders were obtained with a 3 T system...
February 18, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28214330/automated-microfluidic-sorting-of-mammalian-cells-labeled-with-magnetic-microparticles-for-those-that-efficiently-express-and-secrete-a-protein-of-interest
#2
Xuan Droz, Niamh Harraghy, Etienne Lançon, Valérie Le Fourn, David Calabrese, Thierry Colombet, Pascal Liechti, Amar Rida, Pierre-Alain Girod, Nicolas Mermod
We developed a method for the fast sorting and selection of mammalian cells expressing and secreting a protein at high levels. This procedure relies on cell capture using an automated microfluidic device handling antibody-coupled magnetic microparticles and on a timed release of the cells from the microparticles after capture. Using clinically compatible materials and procedures, we show that this approach is able to discriminate between cells that truly secrete high amounts of a protein from those that just display it at high levels on their surface without properly releasing it...
February 18, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28214198/tumor-derived-cd4-cd25-regulatory-t-cells-inhibit-dendritic-cells-function-by-ctla-4
#3
Xin Chen, Yong Du, Qingqing Hu, ZhiMing Huang
PURPOSE: CD4+CD25+regulatoryT cells (Tregs) play an important role in anti-tumor immune responses. Poor prognosis and declining survival rates have intimate connection with high Treg expression in cancer patients. Cytotoxic T Lymphocyte-associated protein (CTLA-4) is one of the most prominent molecules on Treg. In our previous research, we have demonstrated that HCC-derived Tregs can interfere with Dendritic cells (DCs) function and down-modulate CD80/CD86 on DCs in vitro in a cell-contact dependent way...
December 21, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28214172/does-successful-rotator-cuff-repair-improve-muscle-atrophy-and-fatty-infiltration-of-the-rotator-cuff-a-retrospective-magnetic-resonance-imaging-study-performed-shortly-after-surgery-as-a-reference
#4
Noritaka Hamano, Atsushi Yamamoto, Hitoshi Shitara, Tsuyoshi Ichinose, Daisuke Shimoyama, Tsuyoshi Sasaki, Tsutomu Kobayashi, Yohei Kakuta, Toshihisa Osawa, Kenji Takagishi
BACKGROUND: Muscle atrophy and fatty infiltration in the rotator cuff muscles are often observed in patients with chronic rotator cuff tears. The recovery from these conditions has not been clarified. METHODS: Ninety-four patients were included in this study. The improvement in muscle atrophy and fatty infiltration in successfully repaired rotator cuff tears was evaluated by magnetic resonance imaging at 1 year and 2 years after surgery and was compared with muscle atrophy and fatty infiltration observed on magnetic resonance imaging at 2 weeks after surgery to discount any changes due to the medial retraction of the torn tendon...
February 15, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28214165/agenesis-of-the-corpus-callosum-and-aicardi-syndrome-a%C3%A2-neuroimaging-and-clinical-comparison
#5
T Govil-Dalela, A Kumar, R Agarwal, H T Chugani
BACKGROUND: Agenesis of the corpus callosum can occur in individuals with epilepsy, either in isolation or as part of various neurological conditions, such as Aicardi syndrome. In this study, we evaluated the clinical and neuroradiological differences between children with nonsyndromic agenesis of the corpus callosum and those with Aicardi syndrome. METHODS: We evaluated 31 children with epilepsy and agenesis of the corpus callosum (11 males, 20 females), 14 of whom had Aicardi syndrome (all females)...
January 4, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28214153/arrhythmogenic-right-ventricular-dysplasia-atypical-clinical-presentation
#6
José Marçalo, Luiz Menezes Falcão
A 67-year-old man was admitted to our hospital after episodes of syncope preceded by malaise and diffuse neck and chest discomfort. No family history of cardiac disease was reported. Laboratory workup was within normal limits, including D-dimers, serum troponin I and arterial blood gases. The electrocardiogram showed sinus rhythm with T-wave inversion in leads V1 to V3. Computed tomography angiography to investigate pulmonary embolism showed no abnormal findings. Transthoracic echocardiography (TTE) displayed massive enlargement of the right ventricle with intact interatrial septum and no pulmonary hypertension...
February 14, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28214127/functionalized-superparamagnetic-iron-oxide-nanoparticles-provide-highly-efficient-iron-labeling-in-macrophages-for-magnetic-resonance-based-detection-in-vivo
#7
Jack Sharkey, Philip J Starkey Lewis, Michael Barrow, Salamah M Alwahsh, June Noble, Eilidh Livingstone, Ross J Lennen, Maurits A Jansen, Jaime Garcia Carrion, Neill Liptrott, Shareen Forbes, Dave J Adams, Amy E Chadwick, Stuart J Forbes, Patricia Murray, Matthew J Rosseinsky, Christopher E Goldring, B Kevin Park
BACKGROUND AIMS: Tracking cells during regenerative cytotherapy is crucial for monitoring their safety and efficacy. Macrophages are an emerging cell-based regenerative therapy for liver disease and can be readily labeled for medical imaging. A reliable, clinically applicable cell-tracking agent would be a powerful tool to study cell biodistribution. METHODS: Using a recently described chemical design, we set out to functionalize, optimize and characterize a new set of superparamagnetic iron oxide nanoparticles (SPIONs) to efficiently label macrophages for magnetic resonance imaging-based cell tracking in vivo...
February 15, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28213970/efficacy-and-safety-of-immuno-magnetically-sorted-smooth-muscle-progenitor-cells-derived-from-human-induced-pluripotent-stem-cells-for-restoring-urethral-sphincter-function
#8
Yanhui Li, Morgaine Green, Yan Wen, Yi Wei, Prachi Wani, Zhe Wang, Renee Reijo Pera, Bertha Chen
Human-induced pluripotent stem cells (hiPSCs)-based cell therapy holds promise for treating stress urinary incontinence (SUI). However, safety concerns, especially tumorgenic potential of residual undifferentiated cells in hiPSC derivatives, are major barriers for its clinical translation. An efficient, fast and clinical-scale strategy for purifying committed cells is also required. Our previous studies demonstrated the regenerative effects of hiPSC-derived smooth muscle progenitor cells (pSMCs) on the injured urethral sphincter in SUI, but the differentiation protocol required fluorescence-activated cell sorting (FACS) which is not practical for autologous clinical applications...
February 18, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28213908/a-randomized-controlled-trial-of-lacosamide-versus-sodium-valproate-in-status-epilepticus
#9
Usha K Misra, Deepanshu Dubey, Jayantee Kalita
OBJECTIVE: To compare the efficacy and safety of lacosamide (LCM) and sodium valproate (SVA) in lorazepam (LOR)-resistant status epilepticus (SE). METHODS: Patients with LOR-resistant SE were randomized to intravenous LCM 400 mg at a rate of 60 mg/kg/min or SVA 30 mg/kg at a rate of 100 mg/min. The SE severity score (STESS), duration of SE and its etiology, and magnetic resonance imaging (MRI) findings were noted. Primary outcome was seizure cessation for 1 h, and secondary outcomes were 24 h seizure remission, in hospital death and severe adverse events (SAEs)...
February 18, 2017: Epilepsia
https://www.readbyqxmd.com/read/28213852/-imaging-of-the-lumbosacral-plexus-diagnostics-and-treatment-planning-with-high-resolution-procedures
#10
S Jengojan, C Schellen, G Bodner, G Kasprian
BACKGROUND: Technical advances in magnetic resonance (MR) and ultrasound-based neurography nowadays facilitate the radiological assessment of the lumbosacral plexus. OBJECTIVE: Anatomy and imaging of the lumbosacral plexus and diagnostics of the most common pathologies. MATERIAL AND METHODS: Description of the clinically feasible combination of magnetic resonance imaging (MRI) and ultrasound diagnostics, case-based illustration of imaging techniques and individual advantages of MRI and ultrasound-based diagnostics for various pathologies of the lumbosacral plexus and its peripheral nerves...
February 17, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28213833/molecular-imaging-in-synthetic-biology-and-synthetic-biology-in-molecular-imaging
#11
REVIEW
Assaf A Gilad, Mikhail G Shapiro
Biomedical synthetic biology is an emerging field in which cells are engineered at the genetic level to carry out novel functions with relevance to biomedical and industrial applications. This approach promises new treatments, imaging tools, and diagnostics for diseases ranging from gastrointestinal inflammatory syndromes to cancer, diabetes, and neurodegeneration. As these cellular technologies undergo pre-clinical and clinical development, it is becoming essential to monitor their location and function in vivo, necessitating appropriate molecular imaging strategies, and therefore, we have created an interest group within the World Molecular Imaging Society focusing on synthetic biology and reporter gene technologies...
February 17, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28213703/proximal-tibial-bony-and-meniscal-slopes-are-higher-in-acl-injured-subjects-than-controls-a-comparative-mri-study
#12
Ashraf Elmansori, Timothy Lording, Raphaël Dumas, Khalifa Elmajri, Philippe Neyret, Sébastien Lustig
PURPOSE: Increased tibial slope is reported as a risk factor of non-contact anterior cruciate ligament (ACL) injury, but the effect of the soft tissues on slope remains unclear. The primary aims of this study were to compare the tibial bony and soft tissue slopes between patients with and without ACL injury, and to investigate the relationship between the meniscal slopes (MS) and the tibial bony slope. Our hypothesis was that the menisci would correct the inclination of the bony tibial slope towards the horizontal...
February 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28213448/detection-and-monitoring-of-acute-myocarditis-applying-quantitative-cardiovascular-magnetic-resonance
#13
Florian von Knobelsdorff-Brenkenhoff, Johannes Schüler, Serkan Dogangüzel, Matthias A Dieringer, Andre Rudolph, Andreas Greiser, Peter Kellman, Jeanette Schulz-Menger
BACKGROUND: Cardiovascular magnetic resonance based on the Lake Louise Criteria is used to make the diagnosis of acute myocarditis. Novel quantitative parametric mapping techniques promise to overcome some of its limitations. We aimed to evaluate quantitative cardiovascular magnetic resonance to detect and monitor acute myocarditis. METHODS AND RESULTS: Eighteen patients with clinical diagnosis of acute myocarditis (25 years [23-38 years]; 78% males) were prospectively enrolled and repeatedly underwent cardiovascular magnetic resonance at 1...
February 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28213445/ultra-high-field-fmri-reveals-a-role-for-the-subiculum-in-scene-perceptual-discrimination
#14
Carl J Hodgetts, Natalie L Voets, Adam G Thomas, Stuart Clare, Andrew D Lawrence, Kim S Graham
Recent 'representational' accounts suggest a key role for the hippocampus in complex scene perception. Due to limitations in scanner field strength, however, the functional neuroanatomy of hippocampal-dependent scene perception is unknown. Here, we applied 7-Tesla high-resolution functional magnetic resonance imaging (fMRI) alongside a perceptual oddity task, modified from non-human primate studies. This task requires subjects to discriminate highly similar scenes, faces or objects from multiple viewpoints, and has revealed selective impairments during scene discrimination following hippocampal lesions...
February 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28213439/tau-and-%C3%AE-amyloid-are-associated-with-medial-temporal-lobe-structure-function-and-memory-encoding-in-normal-aging
#15
Shawn M Marks, Samuel N Lockhart, Suzanne L Baker, William J Jagust
Normal aging is associated with decline in episodic memory, and also with aggregation of the β-amyloid (Aβ) and tau proteins and atrophy of medial temporal lobe structures crucial to memory formation. While some evidence suggests that Aβ is associated with aberrant neural activity, the relationships between these two aggregated proteins, neural function, and brain structure are poorly understood. Using in vivo human Aβ and tau imaging, we demonstrate that increased Aβ and tau are both associated with aberrant functional magnetic resonance imaging activity in the medial temporal lobes during memory encoding in cognitively normal older adults...
February 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28213280/magnetic-lateral-flow-immunoassay-test-strip-development-considerations-for-proof-of-concept-evaluation
#16
R Connolly, R O' Kennedy
Lateral flow immunoassays (LFIA) have grown to become the predominant test device format for the diagnostics and point-of-care industries. The demand for robust and reproducible LFIAs has been facilitated through scale-up production methods using specialized and automated instruments. However, the feasibility of a LFIA device can still be evaluated in a small-scale laboratory setting through controlled manual preparation methods. The advent of super-paramagnetic (SPMP) labels for use in lateral flow has heralded the possibility of highly sensitive and stable LFIAs...
February 14, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28213265/magnetic-mixed-hemimicelles-dispersive-solid-phase-extraction-based-on-ionic-liquid-coated-attapulgite-polyaniline-polypyrrole-fe3o4-nanocomposites-for-determination-of-acaricides-in-fruit-juice-prior-to-high-performance-liquid-chromatography-diode-array-detection
#17
Xiaoling Yang, Kexin Qiao, Fang Liu, Xiaoling Wu, Miyi Yang, Jing Li, Haixiang Gao, Sanbing Zhang, Wenfeng Zhou, Runhua Lu
In this research, a novel method using magnetic mixed hemimicelles dispersive solid-phase extraction (MMHDSPE) based on C16mimBr-coated attapulgite/polyaniline-polypyrrole/Fe3O4 (ATP/PANI-PPY/Fe3O4) nanocomposites were investigated for enrichment and separation of three acaricides in fruit juice. In this method, we combined the simplicity and speed of dispersive solid-phase extraction, the advantages of mixed hemimicelles and the facility of the phase separation of the magnetic nanoparticles to develop a simple, rapid, sensitive, and effective method for detecting target analytes from the juice samples...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213259/magnetic-non-magnetic-argan-press-cake-nanocellulose-for-the-selective-extraction-of-sudan-dyes-in-food-samples-prior-to-the-determination-by-capillary-liquid-chromatograpy
#18
Yassine Benmassaoud, María J Villaseñor, Rachid Salghi, Shehdeh Jodeh, Manuel Algarra, Mohammed Zougagh, Ángel Ríos
Two methods for the determination of Sudan dyes (Sudan I, Sudan II, Sudan III and Sudan IV) in food samples, by solid phase extraction - capillary liquid chromatography, are proposed. Both methods use nanocellulose (NC) extracted from bleached argan press cake (APC), as a nano-adsorbent recycled from an agricultural waste material. One of the methods involves the dispersion of NC in food sample extracts, along with the waste and eluents being separated by centrifugation. In the other method, NC was modified by magnetic iron nanoparticles before using it in the extraction of Sudan dyes...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213247/an-automatic-stirring-assisted-liquid-liquid-microextraction-system-based-on-lab-in-syringe-platform-for-on-line-atomic-spectrometric-determination-of-trace-metals
#19
Georgia Giakisikli, Aristidis N Anthemidis
A novel simple fully automatic on-line magnetic stirring-assisted liquid-liquid microextraction method, based on the lab-in-syringe (LIS) concept, has been developed as an alternative approach for sample pretreatment and atomic spectrometric assays. The analytical process includes the in-syringe reaction of the metal ion with the chelating reagent, the analyte micro-extraction and the subsequent transportation of the extractant to the detection system for electrothermal atomic absorption spectrometric (ETAAS) quantification...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213246/spinel-type-manganese-ferrite-mnfe2o4-microspheres-a-novel-affinity-probe-for-selective-and-fast-enrichment-of-phosphopeptides
#20
Xing-Yu Long, Jia-Yuan Li, Dong Sheng, Hong-Zhen Lian
The spinel-type magnetic manganese ferrite (MnFe2O4) microspheres synthesized by simple solvothermal method were used as a novel adsorbent for selective enrichment and effective isolation of phosphopeptides. The uniform MnFe2O4 magnetic affinity microspheres (MAMSs) had a narrow particle size distribution between 250 and 260nm, and displayed superparamagnetism with a saturation magnetization value of 67.0emu/g. Comprehensively, the possible formation mechanism of MnFe2O4 microspheres with ferric and manganous sources as dual precursors was elucidated by comparison with those of Fe3O4 nanoparticles and MnOOH nanosheets respectively with either ferric or manganous source as single precursor...
May 1, 2017: Talanta
keyword
keyword
42625
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"