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https://www.readbyqxmd.com/read/28214960/axonal-disruption-in-white-matter-underlying-cortical-sulcus-tau-pathology-in-chronic-traumatic-encephalopathy
#1
Laurena Holleran, Joong Hee Kim, Mihika Gangolli, Thor Stein, Victor Alvarez, Ann McKee, David L Brody
Chronic traumatic encephalopathy (CTE) is a progressive degenerative disorder associated with repetitive traumatic brain injury. One of the primary defining neuropathological lesions in CTE, based on the first consensus conference, is the accumulation of hyperphosphorylated tau in gray matter sulcal depths. Post-mortem CTE studies have also reported myelin loss, axonal injury and white matter degeneration. Currently, the diagnosis of CTE is restricted to post-mortem neuropathological analysis. We hypothesized that high spatial resolution advanced diffusion MRI might be useful for detecting white matter microstructural changes directly adjacent to gray matter tau pathology...
February 18, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28213868/elliptical-fourier-analysis-fundamentals-applications-and-value-for-forensic-anthropology
#2
REVIEW
Jodi Caple, John Byrd, Carl N Stephan
The numerical description of skeletal morphology enables forensic anthropologists to conduct objective, reproducible, and structured tests, with the added capability of verifying morphoscopic-based analyses. One technique that permits comprehensive quantification of outline shape is elliptical Fourier analysis. This curve fitting technique allows a form's outline to be approximated via the sum of multiple sine and cosine waves, permitting the profile perimeter of an object to be described in a dense (continuous) manner at a user-defined level of precision...
February 17, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28213795/thigh-exploration-for-excision-of-a-transobturator-sling
#3
Alana M Murphy, Howard B Goldman
INTRODUCTION AND HYPOTHESIS: Groin pain is a known complication of transobturator mesh placement. The objective of this instructional video is to present the surgical technique used to excise the thigh portion of a sling in a patient with persistent thigh pain after placement of a transobturator sling. METHODS: The featured patient is a 49-year-old woman with a history of bilateral groin pain since undergoing placement of a type one polypropylene transobturator sling...
February 17, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28213743/development-of-cer-001-preclinical-dose-selection-through-to-phase-i-clinical-findings
#4
Constance H Keyserling, Ronald Barbaras, Renee Benghozi, Jean-Louis Dasseux
BACKGROUND: CER-001 comprises recombinant human apolipoprotein A-I complexed with phospholipids that mimics natural, nascent, pre-β high-density lipoprotein (HDL). We present animal model data showing dose-dependent increases in cholesterol efflux with CER-001 and its subsequent elimination by reverse lipid transport, together with inhibition of atherosclerotic plaque progression. We report the first phase I study results with CER-001 in humans, starting at 0.25 mg/kg, which is 1/80th of the safe dose (20 mg/kg) established in 4-week multiple-dose animal studies dosed every second day...
February 17, 2017: Clinical Drug Investigation
https://www.readbyqxmd.com/read/28213605/2017-recommendations-for-preventive-pediatric-health-care
#5
(no author information available yet)
The 2017 Recommendations for Preventive Pediatric Health Care (Periodicity Schedule) have been approved by the American Academy of Pediatrics (AAP) and represents a consensus of AAP and the Bright Futures Periodicity Schedule Workgroup. Each child and family is unique; therefore, these recommendations are designed for the care of children who are receiving competent parenting, have no manifestations of any important health problems, and are growing and developing in a satisfactory fashion. Developmental, psychosocial, and chronic disease issues for children and adolescents may require frequent counseling and treatment visits separate from preventive care visits...
February 17, 2017: Pediatrics
https://www.readbyqxmd.com/read/28213272/rev-erb-regulation-of-cholesterologenesis
#6
Sadichha Sitaula, Jinsong Zhang, Fernanda Ruiz, Thomas P Burris
REV-ERBα and REV-ERBβ are heme regulated nuclear receptors that are known to regulate metabolic pathways. We previously demonstrated that treatment of mice with synthetic REV-ERB agonists suppressed plasma cholesterol levels and the hepatic levels of the rate limiting enzyme in cholesterol biosynthesis (3-hydroxy-3-Mmethylglutaryl-CoA reductase). Here, we characterize the role of REV-ERB on the cholesterol biosynthetic pathway in greater detail. The REV-ERB agonist SR9009 reduced plasma cholesterol levels in both wild type C57Bl/6 and low density lipoprotein receptor (LDLR) null mice as well as reducing the expression of an array of genes within the cholesterol biosynthetic pathway...
February 14, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28213200/validation-of-a-quantitative-method-to-measure-neural-respiratory-drive-in-children-during-sleep
#7
Sandra Ya-Chu Chuang, Arthur Teng, Jane Elizabeth Butler, Simon Charles Gandevia, Hiran Selvadurai, Adam Jaffe
AIMS: Quantitatively measure and validate analysis of neural respiratory drive (NRD) using a commercial polysomnography system in children during sleep. METHOD: Surface electromyogram of the diaphragm (sEMGdi) recorded from primary snoring children were analysed. A subset was re-analysed to assess intra- and inter-investigator reproducibility. Effects of different band pass filter settings (20-100Hz vs 10-1000Hz) on sEMGdi amplitude were evaluated. RESULTS: Mean sEMGdi from 45 children aged 4...
February 14, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/28212815/systematic-testing-of-enzyme-perturbation-sensitivities-via-graded-dcas9-modulation-in-saccharomyces-cerevisiae
#8
Matthew Deaner, Hal S Alper
Dissecting genotype-phenotype relationships in a high-throughput and scalable manner is still an unresolved problem facing metabolic engineers. While the RNA-guided nuclease Cas9 has been repurposed as a programmable transcription regulator, its application has typically been limited to binary on/off regulation and thus misses informative and potentially optimal intermediate levels of gene expression. In this work, we establish a rapid method for fine-tuned, graded expression of pathway enzymes via dCas9 regulation by varying sgRNA target location as the dominant parameter...
February 14, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28212159/liver-allocation-and-distribution-time-for-a-change
#9
Ranjit Deshpande, Ryutaro Hirose, David Mulligan
PURPOSE OF REVIEW: Liver allograft allocation has been a topic of hot debate for over a decade. New redistricting changes have been proposed by the Liver and Intestinal Transplant Committee to the existing United Network for Organ Sharing (UNOS) liver allocation policy. The basis of this new proposal is similar to the old one with an aim to distribute organs in a fair, efficient and equitable fashion. In this review, we plan to look in depth at the redistribution proposals thus far, their merits and how they may help patients who do not have adequate access to livers...
February 15, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28212155/molecular-markers-in-lung-cancer-role-of-ebus
#10
Semra Bilaçeroğlu
PURPOSE OF REVIEW: As demonstrated by the recent therapeutic advances in nonsmall cell lung cancer (NSCLC), a personalized approach can considerably reduce its mortality. RECENT FINDINGS: Molecular tests identifying genetic mutations in NSCLC have led to a shift towards more effective and personalized therapies targeted to these alterations. Adequate tissue is required for diagnosing, subcharacterizing, and genotyping NSCLC by morphological, immunohistochemical, and molecular techniques...
February 16, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28212109/sustainable-exposure-prevention-through-innovative-detection-and-remediation-technologies-from-the-niehs-superfund-research-program
#11
Heather F Henry, William A Suk
Innovative devices and tools for exposure assessment and remediation play an integral role in preventing exposure to hazardous substances. New solutions for detecting and remediating organic, inorganic, and mixtures of contaminants can improve public health as a means of primary prevention. Using a public health prevention model, detection and remediation technologies contribute to primary prevention as tools to identify areas of high risk (e.g. contamination hotspots), to recognize hazards (bioassay tests), and to prevent exposure through contaminant cleanups...
February 17, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28212005/stimuli-responsive-polymersomes-for-biomedical-applications
#12
Xiuli Hu, Yuqi Zhang, Zhigang Xie, Xiabin Jing, Adriano Bellotti, Zhen Gu
Polymersomes, the structural analogues of liposomes, are hollow structures enclosed by a bilayer membrane made from amphiphilic copolymers. Polymersomes have been proposed to mimic the structure and properties of cellular membranes and viral capsids. Excellent robustness and stability, chemical versatility for tunable membrane properties and surface functionalization make polymersomes attractive candidates for drug delivery, diagnostic imaging, nanoreactor vessels, and artificial organelles. In further biomimetic strategies, stimuli-responsive polymersomes that can recognize various external physical or internal biological environmental stimuli and conduct "on demand" release in dose-, spatial-, and temporal-controlled fashions have been widely developed...
February 17, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28211967/generation-of-the-scf3-radical-by-photoredox-catalysis-intra-and-intermolecular-carbotrifluoromethylthiolation-of-alkenes
#13
Guillaume Dagousset, Cédric Simon, Elsa Anselmi, Béatrice Tuccio, Thierry Billard, Emmanuel Magnier
We report herein the first use of N-trifluoromethylthiosaccharin as the source of SCF3 radical under photoredox catalysis. This allowed an efficient and general visible-light-mediated carbotrifluoromethylthiolation of alkenes. Under the optimized conditions using fac-Ir(ppy)3 as the photocatalyst, various N-aryl acrylamides as well as a wide range of substituted styrenes can readily be difunctionalized in an intra- or intermolecular fashion, affording the corresponding SCF3-containing products in good to excellent yield...
February 17, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28211718/gravitational-smoothing-of-kinks-on-cosmic-string-loops
#14
Jeremy M Wachter, Ken D Olum
We analyze the effect of gravitational backreaction on cosmic string loops with kinks, which is an important determinant of the shape, and thus the potential observability, of string loops which may exist in the Universe today. Kinks are not rounded off, but may be straightened out. This means that backreaction will only cause loops with kinks to develop cusps after some potentially large fraction of their lifetimes. In some loops, symmetries prevent even this process, so that the loop evaporates in a self-similar fashion and the kinks are unchanged...
February 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28211449/translational-use-of-event-related-potentials-to-assess-circuit-integrity-in-asd
#15
REVIEW
Meera E Modi, Mustafa Sahin
Deficits in social cognition are the defining characteristic of autism spectrum disorder (ASD). Social cognition requires the integration of several neural circuits in a time-sensitive fashion, so impairments in social interactions could arise as a result of alterations in network connectivity. Electroencephalography (EEG) has revealed abnormalities in event related potentials (ERPs) evoked by auditory and visual sensory stimuli in humans with ASD, indicating disruption of neural connectivity. Similar abnormalities in sensory-evoked ERPs have been observed in animal models of ASD, suggesting that ERPs have the potential to provide a translational biomarker of the disorder...
February 17, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28211278/endoscopic-removal-of-multiple-sharp-gastro-duodenal-foreign-bodies
#16
Samuel Costa, Raquel Gonçalves, Carla Rolanda
A 45 years old female,with bipolar disorder,was brought to the Emergency Department with abdominal pain. The patient was hemodynamically stable,with no signs of respiratory distress. On abdominal examination she had pain in the upper quadrants,without peritoneal irritation. The successful endoscopic removal decreases if delayed approach, beyond 12 h, and sharp objects. Moreover in case of sharp objects, even if already into the stomach or duodenum, they should be retrieved endoscopically if it can be accomplished safely, because the risk of a complication during its natural exteriorization is as high as 35%...
February 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28210402/interdisciplinary-management-of-minimally-displaced-orbital-roof-fractures-delayed-pulsatile-exophthalmos-and-orbital-encephalocele
#17
Austin Y Ha, William Mangham, Sarah A Frommer, David Choi, Petra Klinge, Helena O Taylor, Adetokunbo A Oyelese, Stephen R Sullivan
Traumatic orbital roof fractures are rare and are managed nonoperatively in most cases. They are typically associated with severe mechanisms of injury and may be associated with significant neurologic or ophthalmologic compromise including traumatic brain injury and vision loss. Rarely, traumatic encephalocele or pulsatile exophthalmos may be present at the time of injury or develop in delayed fashion, necessitating close observation of these patients. In this article, we describe two patients with minimally displaced blow-in type orbital roof fractures that were later complicated by orbital encephalocele and pulsatile exophthalmos, prompting urgent surgical intervention...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28209412/injectable-chondroplasty-enzymatic-reshaping-of-cartilage-grafts
#18
J R Gandy, A Foulad, K K Chao, B J F Wong
OBJECTIVE/HYPOTHESIS: To develop an injection-based enzymatic technique that selectively softens cartilage tissue for reshaping cartilaginous structures in the head and neck. MATERIALS AND METHODS: Two groups were formed using fresh rabbit ears: (1) whole rabbit ear group; (2) composite graft group (2.5mm×3.0cm specimens sectioned from the central region of the pinna). Subperichondrial injections using three enzymes (hyaluronidase, pronase, and collagenase II) in sequence were performed for the experimental specimens from both groups...
February 10, 2017: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/28208940/neurological-disorders-complicating-pregnancy-focus-on-obstetric-outcome
#19
Sandya Renukesh, Lavanya Rai
INTRODUCTION: Neurological disorders in pregnancy can be pregnancy related or can be caused by exacerbation of a pre-existing neurological condition or sometimes may even be detected for the first time during pregnancy in which it might be an incidental finding. The diagnosis and management of the neurological disorders in pregnancy is always a challenging task due to varied symptomatology and risks to the fetus. The evaluation and management should be performed in a stepwise fashion and requires multidisciplinary approach...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208769/localisation-microscopy-of-breast-epithelial-erbb-2-receptors-and-gap-junctions-trafficking-after-%C3%AE-irradiation-neuregulin-1%C3%AE-and-trastuzumab-application
#20
Götz Pilarczyk, Ines Nesnidal, Manuel Gunkel, Margund Bach, Felix Bestvater, Michael Hausmann
In cancer, vulnerable breast epithelium malignance tendency correlates with number and activation of ErbB receptor tyrosine kinases. In the presented work, we observe ErbB receptors activated by irradiation-induced DNA injury or neuregulin- 1 β application, or alternatively, attenuated by a therapeutic antibody using high resolution fluorescence localization microscopy. The gap junction turnover coinciding with ErbB receptor activation and co-transport is simultaneously recorded. DNA injury caused by 4 Gray of 6 MeV photon γ -irradiation or alternatively neuregulin- 1 β application mobilized ErbB receptors in a nucleograde fashion-a process attenuated by trastuzumab antibody application...
February 9, 2017: International Journal of Molecular Sciences
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