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https://www.readbyqxmd.com/read/29342361/high-speed-spectroscopic-transient-absorption-imaging-of-defects-in-graphene
#1
Kai-Chih Huang, Jeremy McCall, Pu Wang, Chien-Sheng Liao, Gregory Eakins, Ji-Xin Cheng, Chen Yang
Graphene grain boundaries (GBs) and other nano-defects can deteriorate electronic properties. Here, using transient absorption (TA) microscopy, we directly visualized GBs by TA intensity increase due to change in density of state. We also observed a faster decay due to defect-accelerated carrier relaxation in the GB area. By line-illumination and parallel detection, we increased the TA intensity imaging speed to 1,000 frames per second, which is 6 orders of magnitude faster than Raman microscopy. Combined with a resonant optical delay tuner which scans a 5...
January 17, 2018: Nano Letters
https://www.readbyqxmd.com/read/29342313/collagen-xii-myopathy-with-rectus-femoris-atrophy-and-collagen-xii-retention-in-fibroblasts
#2
Nanna Witting, Thomas Krag, Ulla Werlauff, Morten Duno, Sofie Thuroe Oestergaard, Julia Rebecka Dahlqvist, John Vissing
INTRODUCTION: Mutation in the collagen XII gene (COL12A1) was recently reported to induce Bethlem myopathy. We describe a family affected by collagen XII-related myopathy in 3 generations. METHODS: Systematic interview, clinical examination, skin biopsies and MRI muscle. RESULTS: The phenotype was characterized by neonatal hypotonia, contractures and delayed motor development followed by resolution of contractures and a motor performance limited by reduced endurance...
January 17, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29342304/introduction-of-standardised-tobacco-packaging-during-a-12-month-transition-period-findings-from-small-retailers-in-the-united-kingdom
#3
Nathan Critchlow, Martine Stead, Crawford Moodie, Douglas Eadie, Anne Marie MacKintosh
Introduction: Factory-made cigarettes (FMC) and roll-your-own (RYO) tobacco have had to be produced in standardised packaging since 20th May 2016 in the United Kingdom, with a minimum pack size of 20 sticks for FMC and 30 grams for RYO. Manufacturers and retailers were given a 12-month transition period. Methods: An observational study was conducted using monthly Electronic Point of Sale data from 500 small retailers in England, Scotland, and Wales, between May 2016 and May 2017...
January 12, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/29342259/false-starts-in-test-and-start-a-qualitative-study-of-reasons-for-delayed-antiretroviral-therapy-in-swaziland
#4
Christopher Pell, Eva Vernooij, Nelisiwe Masilela, Njabulo Simelane, Fortunate Shabalala, Ria Reis
Background: Test and start, antiretroviral therapy (ART) for all HIV-positive individuals, is a WHO-recommended treatment guideline. In Swaziland, test and start has been evaluated through the MaxART implementation study. This article examines why, in MaxART, some newly diagnosed HIV-positive clients delayed initiating ART. Methods: Thirteen HIV-positive clients who delayed ART for ≥90 d after testing were identified from the MaxART study database and interviewed...
January 12, 2018: International Health
https://www.readbyqxmd.com/read/29342248/clinical-considerations-of-the-role-of-palbociclib-in-the-management-of-advanced-breast-cancer-patients-with-and-without-visceral-metastases
#5
N C Turner, R S Finn, M Martin, S-A Im, A DeMichele, J Ettl, V Diéras, S Moulder, O Lipatov, M Colleoni, M Cristofanilli, D R Lu, A Mori, C Giorgetti, S Iyer, C Huang Bartlett, K A Gelmon
Background: This report assesses the efficacy and safety of palbociclib plus endocrine therapy (ET) in women with hormone receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer (ABC) with or without visceral metastases. Patients and methods: Pre- and postmenopausal women with disease progression following prior ET (PALOMA-3; N=521) and postmenopausal women untreated for ABC (PALOMA-2; N=666) were randomized 2:1 to ET (fulvestrant or letrozole, respectively) plus palbociclib or placebo...
January 11, 2018: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/29342244/gli2-rescues-delays-in-brain-development-induced-by-kif3a-dysfunction
#6
Jia-Long Chen, Chia-Hsiang Chang, Jin-Wu Tsai
The primary cilium in neural stem cells plays distinct roles in different stages during cortical development. Ciliary dysfunctions in human (i.e., ciliopathy) cause developmental defects in multiple organs, including brain developmental delays, which lead to intellectual disabilities and cognitive deficits. However, effective treatment to this devastating developmental disorder is still lacking. Here, we first investigated the effects of ciliopathy on neural stem cells by knocking down Kif3a, a kinesin II motor required for ciliogenesis, in the neurogenic stage of cortical development by in utero electroporation of mouse embryos...
January 12, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29342134/chromosomal-instability-drives-metastasis-through-a-cytosolic-dna-response
#7
Samuel F Bakhoum, Bryan Ngo, Ashley M Laughney, Julie-Ann Cavallo, Charles J Murphy, Peter Ly, Pragya Shah, Roshan K Sriram, Thomas B K Watkins, Neil K Taunk, Mercedes Duran, Chantal Pauli, Christine Shaw, Kalyani Chadalavada, Vinagolu K Rajasekhar, Giulio Genovese, Subramanian Venkatesan, Nicolai J Birkbak, Nicholas McGranahan, Mark Lundquist, Quincey LaPlant, John H Healey, Olivier Elemento, Christine H Chung, Nancy Y Lee, Marcin Imielenski, Gouri Nanjangud, Dana Pe'er, Don W Cleveland, Simon N Powell, Jan Lammerding, Charles Swanton, Lewis C Cantley
Chromosomal instability is a hallmark of cancer that results from ongoing errors in chromosome segregation during mitosis. Although chromosomal instability is a major driver of tumour evolution, its role in metastasis has not been established. Here we show that chromosomal instability promotes metastasis by sustaining a tumour cell-autonomous response to cytosolic DNA. Errors in chromosome segregation create a preponderance of micronuclei whose rupture spills genomic DNA into the cytosol. This leads to the activation of the cGAS-STING (cyclic GMP-AMP synthase-stimulator of interferon genes) cytosolic DNA-sensing pathway and downstream noncanonical NF-κB signalling...
January 17, 2018: Nature
https://www.readbyqxmd.com/read/29342103/minimally-invasive-neural-interface-for-distributed-wireless-electrocorticogram-recording-systems
#8
Sun-Il Chang, Sung-Yun Park, Euisik Yoon
This paper presents a minimally-invasive neural interface for distributed wireless electrocorticogram (ECoG) recording systems. The proposed interface equips all necessary components for ECoG recording, such as the high performance front-end integrated circuits, a fabricated flexible microelectrode array, and wireless communication inside a miniaturized custom-made platform. The multiple units of the interface systems can be deployed to cover a broad range of the target brain region and transmit signals via a built-in intra-skin communication (ISCOM) module...
January 17, 2018: Sensors
https://www.readbyqxmd.com/read/29342014/patterns-and-predictors-of-return-to-work-after-major-trauma-a-prospective-population-based-registry-study
#9
Alex Collie, Pamela M Simpson, Peter A Cameron, Shanthi Ameratunga, Jennie Ponsford, Ronan A Lyons, Sandra Braaf, Andrew Nunn, James E Harrison, Belinda J Gabbe
OBJECTIVE: To characterize patterns of engagement in work during the 4-year period after major traumatic injury, and to identify factors associated with those patterns. BACKGROUND: Employment is an important marker of functional recovery from injury. There are few population-based studies of long-term employment outcomes, and limited data on the patterns of return to work (RTW) after injury. METHODS: A population-based, prospective cohort study using the Victorian State Trauma Registry...
January 16, 2018: Annals of Surgery
https://www.readbyqxmd.com/read/29342012/diffuse-chorioretinopathy-without-serous-detachment-associated-with-cardiac-transplantation
#10
Michael F Marmor
PURPOSE: To analyze an unusual case of widespread chorioretinopathy after cardiac transplantation for its potential etiology and clinical significance. METHODS: Clinical examinations included widefield and macular color and fundus autofluorescence photography, spectral domain optical coherence tomography, fluorescein angiography and indocyanine green angiography, full-field electroretinography, and Goldmann visual fields. PATIENT: A 44-year-old Hispanic woman was referred to rule out retinitis pigmentosa...
January 16, 2018: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29341984/effect-of-age-at-vaccination-on-rotavirus-vaccine-effectiveness-in-bolivian-infants
#11
Rachel M Burke, Jacqueline E Tate, Kimberly D Pringle, Manish Patel, Lucia H De Oliveira, Umesh D Parashar
BACKGROUND: Rotavirus vaccines are less effective in developing countries versus developed countries. One hypothesis for this difference in performance is that higher levels of maternal antibodies in developing countries may interfere with vaccine response, suggesting that delayed dosing could be beneficial. The present analysis aims to assess whether rotavirus vaccine effectiveness (VE) varies by age at vaccination during routine use in Bolivia. METHODS: Data were merged from two post-licensure evaluations of monovalent rotavirus vaccine (RV1) in Bolivia, where two doses of RV1 are recommended at two and four months of age...
January 16, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29341945/lessons-about-causes-and-management-of-an-ebola-outbreak
#12
Aida Elargoubi, Anis W Belhaj Khelifa, Ons Haddad, Salma Mhalla, Nabil Sakly, Maha Mastouri
Ebola virus disease (EVD) is one of the deadliest viral diseases. It is characterized by a high mortality rate due to the lack of effective and safe treatments or vaccines and its ability to spread at an unstoppable pace. The West Africa outbreak ended but the disease may strike again at any time. The latest epidemic was, by far, the deadliest to date. The most concern was why this outbreak was so different from the previous ones. We proposed in this review firstly to summarize the principal causes of its unprecedented spread and secondly to identify the steps for an effective management approach of a future Ebola outbreak...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29341941/cauda-equina-syndrome-due-to-lumbar-disc-herniation-a-review-of-literature
#13
Stylianos Kapetanakis, Constantinos Chaniotakis, Constantinos Kazakos, Jannis V Papathanasiou
Cauda equina syndrome (CES) is a rare neurologic condition that is caused by compression of the cauda equina. Cauda equina consists of spinal nerves L2-L5, S1-S5 and the coccygeal nerve. The compression of these nerve roots can be caused mainly by lumbar disc herniation (45% of all causes). The diagnosis consists of two critical points: a) detailed history and physical examination and b) MRI or CT. The gold standard of the treatment of this syndrome is the surgical approach in combination with the timing of onset of symptoms...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29341814/utilizing-a-rat-delayed-implantation-model-to-teach-integrative-endocrinology-and-reproductive-biology
#14
Rodney D Geisert, Michael F Smith, Amanda L Schmelzle, Jonathan A Green
In this teaching laboratory, the students are directed in an exercise that involves designing and performing an experiment to determine estrogen's role in regulating delayed implantation (diapause) in female rats. To encourage active participation by the students, a discussion question is provided before the laboratory exercise in which each student is asked to search the literature and provide written answers to questions and to formulate an experiment to test the role of ovarian estrogen in inducing implantation in female rats...
March 1, 2018: Advances in Physiology Education
https://www.readbyqxmd.com/read/29341742/measurement-of-the-electron-antineutrino-angular-correlation-in-neutron-%C3%AE-decay
#15
G Darius, W A Byron, C R DeAngelis, M T Hassan, F E Wietfeldt, B Collett, G L Jones, M S Dewey, M P Mendenhall, J S Nico, H Park, A Komives, E J Stephenson
We report the first result for the electron-antineutrino angular correlation (a coefficient) in free neutron β decay from the aCORN experiment. aCORN uses a novel method in which the a coefficient is proportional to an asymmetry in proton time of flight for events where the β electron and recoil proton are detected in delayed coincidence. Data are presented from a 15 month run at the NIST Center for Neutron Research. We obtained a=-0.1090±0.0030(stat)±0.0028(sys), the most precise measurement of the neutron a coefficient reported to date...
July 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341647/attosecond-electron-correlation-dynamics-in-double-ionization-of-benzene-probed-with-two-electron-angular-streaking
#16
Alexander H Winney, Suk Kyoung Lee, Yun Fei Lin, Qing Liao, Pradip Adhikari, Gihan Basnayake, H Bernhard Schlegel, Wen Li
With a novel three-dimensional electron-electron coincidence imaging technique and two-electron angular streaking method, we show that the emission time delay between two electrons can be measured from tens of attoseconds to more than 1 fs. Surprisingly, in benzene, the double ionization rate decays as the time delay between the first and second electron emission increases during the first 500 as. This is further supported by the decay of the Coulomb repulsion in the direction perpendicular to the laser polarization...
September 22, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341424/fetal-ultrasonographic-findings-including-cerebral-hyperechogenicity-in-a-patient-with-non-lethal-form-of-raine-syndrome
#17
Kei Tamai, Katsuhiko Tada, Akihito Takeuchi, Makoto Nakamura, Hidenori Marunaka, Yosuke Washio, Hiroyuki Tanaka, Fuyuki Miya, Nobuhiko Okamoto, Misao Kageyama
Raine syndrome is a rare osteosclerotic bone dysplasia characterized by craniofacial anomalies and intracranial calcification. Most patients with Raine syndrome are of Arab ancestry and die during the neonatal period. We herein report a Japanese patient with non-lethal Raine syndrome who presented with characteristic cerebral hyperechogenicity and a hypoplastic nose by fetal ultrasonography. She was admitted to the NICU due to pyriform aperture stenosis. Craniofacial abnormalities, intracranial calcification, osteosclerosis, chondrodysplasia punctata, and a mutation of FAM20C was identified...
January 17, 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29341420/transgenic-mice-specifically-expressing-amphiregulin-in-white-adipose-tissue-showed-less-adipose-tissue-mass
#18
Bo Yang, Takahiro Kumoto, Takeshi Arima, Minako Nakamura, Yohei Sanada, Thanutchaporn Kumrungsee, Yusuke Sotomaru, Masayuki Shimada, Noriyuki Yanaka
To determine adipocytokines that play a regulatory role during obesity development, we explored the genes that encode growth factors and investigated the physiological functions for adipose tissue development. Here, we isolated amphiregulin (Areg) gene whose expression was significantly up-regulated in obese adipose tissues. Areg mRNA level was positively correlated with macrophage marker gene expression in adipose tissues in vivo. Unexpectedly, Areg transgenic mice showed less adipose tissue mass with increased mRNA expression levels of Tnf-α and peroxisome proliferator-activated receptor γ coactivator 1α (Pgc-1α) and delayed white adipose tissue development during the convalescent stage in a dextran sodium sulfate-induced colitis model...
January 17, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/29341397/bi-allelic-mutations-of-ccdc88c-are-a-rare-cause-of-severe-congenital-hydrocephalus
#19
Gaia Ruggeri, Andrew E Timms, Chi Cheng, Avery Weiss, Peter Kollros, Teresa Chapman, Hannah Tully, Ghayda M Mirzaa
Congenital or infantile hydrocephalus is caused by genetic and non-genetic factors and is highly heterogeneous in etiology. In recent studies, a limited number of genetic causes of hydrocephalus have been identified. To date, recessive mutations in the CCDC88C gene have been identified as a cause of non-syndromic congenital hydrocephalus in three reported families. Here, we report the fourth known family with two affected individuals with congenital hydrocephalus due to a homozygous mutation in the CCDC88C gene identified by whole exome sequencing...
January 17, 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29341395/health-of-southern-tasmanian-4-to-6-year-old-children-in-out-of-home-care-compared-to-peers
#20
Marie Rauter, Anagha Jayakar, Tom Clemens, Zaharenia Galanos, Louise Newbery, Andrew Whelan
AIM: To compare the health of 4- to 6-year-old children in out-of-home care (OOHC) in Southern Tasmania with their peers. METHODS: Demographic and health data collection and prospective health assessment of all 4- to 6-year olds in OOHC in Southern Tasmania on 30 August 2011 was undertaken. Data were compared to Tasmanian and/or Australian peers. RESULTS: A total of 109 of 129 children aged 4 to 6 years were included in the study. Time in OOHC was on average 38 (range 0-76) months...
January 17, 2018: Journal of Paediatrics and Child Health
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