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Thornton, C

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https://www.readbyqxmd.com/read/28522690/resistance-to-malaria-through-structural-variation-of-red-blood-cell-invasion-receptors
#1
Ellen M Leffler, Gavin Band, George B J Busby, Katja Kivinen, Quang Si Le, Geraldine M Clarke, Kalifa A Bojang, David J Conway, Muminatou Jallow, Fatoumatta Sisay-Joof, Edith C Bougouma, Valentina D Mangano, David Modiano, Sodiomon B Sirima, Eric Achidi, Tobias O Apinjoh, Kevin Marsh, Carolyne M Ndila, Norbert Peshu, Thomas N Williams, Chris Drakeley, Alphaxard Manjurano, Hugh Reyburn, Eleanor Riley, David Kachala, Malcolm Molyneux, Vysaul Nyirongo, Terrie Taylor, Nicole Thornton, Louise Tilley, Shane Grimsley, Eleanor Drury, Jim Stalker, Victoria Cornelius, Christina Hubbart, Anna E Jeffreys, Kate Rowlands, Kirk A Rockett, Chris C A Spencer, Dominic P Kwiatkowski
The malaria parasite Plasmodium falciparum invades human red blood cells via interactions between host and parasite surface proteins. By analyzing genome sequence data from human populations, including 1269 individuals from sub-Saharan Africa, we identify a diverse array of large copy number variants affecting the host invasion receptor genes GYPA and GYPB We find that a nearby association with severe malaria is explained by a complex structural rearrangement involving the loss of GYPB and gain of two GYPB-A hybrid genes, which encode a serologically distinct blood group antigen known as Dantu...
May 18, 2017: Science
https://www.readbyqxmd.com/read/28501558/effects-of-prolonged-exposure-to-co2-on-behaviour-hormone-secretion-and-respiratory-muscles-in-young-female-rats
#2
J M Martrette, C Egloff, C Clément, K Yasukawa, S N Thornton, M Trabalon
Atmospheric CO2 concentrations increased significantly over the last century and continuing increases are expected to have significant effects on current ecosystems. This study evaluated the behavioural and physiological (hormone status, muscle structure) effects of prolonged CO2 exposure in young female Wistar rats exposed at 700ppm of CO2 during 6h a day for 15days. Prolonged CO2 exposure, though not continuous, produced significant disturbances in behaviour with an increase in drinking, grooming and resting, and a reduction in rearing, jumping-play and locomotor activity...
May 10, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28486107/rasgrp3-mediates-mapk-pathway-activation-in-gnaq-mutant-uveal-melanoma
#3
Xu Chen, Qiuxia Wu, Philippe Depeille, Peirong Chen, Sophie Thornton, Helen Kalirai, Sarah E Coupland, Jeroen P Roose, Boris C Bastian
Constitutive activation of Gαq signaling by mutations in GNAQ or GNA11 occurs in over 80% of uveal melanomas (UMs) and activates MAPK. Protein kinase C (PKC) has been implicated as a link, but the mechanistic details remained unclear. We identified PKC δ and ɛ as required and sufficient to activate MAPK in GNAQ mutant melanomas. MAPK activation depends on Ras and is caused by RasGRP3, which is significantly and selectively overexpressed in response to GNAQ/11 mutation in UM. RasGRP3 activation occurs via PKC δ- and ɛ-dependent phosphorylation and PKC-independent, DAG-mediated membrane recruitment, possibly explaining the limited effect of PKC inhibitors to durably suppress MAPK in UM...
May 8, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28467538/who-is-responsible-for-the-safe-introduction-of-new-surgical-technology-an-important-legal-precedent-from-the-da-vinci-surgical-system-trials
#4
Jason C Pradarelli, Joseph P Thornton, Justin B Dimick
No abstract text is available yet for this article.
May 3, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28462379/prolonged-absence-of-mechanoluminal-stimulation-in-human-intestine-alters-the-transcriptome-and-intestinal-stem-cell-niche
#5
Minna M Wieck, Christopher R Schlieve, Matthew E Thornton, Kathryn L Fowler, Mubina Isani, Christa N Grant, Ashley E Hilton, Xiaogang Hou, Brendan H Grubbs, Mark R Frey, Tracy C Grikscheit
BACKGROUND & AIMS: For patients with short-bowel syndrome, intestinal adaptation is required to achieve enteral independence. Although adaptation has been studied extensively in animal models, little is known about this process in human intestine. We hypothesized that analysis of matched specimens with and without luminal flow could identify new potential therapeutic pathways. METHODS: Fifteen paired human ileum samples were collected from children aged 2-20 months during ileostomy-reversal surgery after short-segment intestinal resection and diversion...
May 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28453575/genome-wide-association-study-of-red-blood-cell-traits-in-hispanics-latinos-the-hispanic-community-health-study-study-of-latinos
#6
Chani J Hodonsky, Deepti Jain, Ursula M Schick, Jean V Morrison, Lisa Brown, Caitlin P McHugh, Claudia Schurmann, Diane D Chen, Yong Mei Liu, Paul L Auer, Cecilia A Laurie, Kent D Taylor, Brian L Browning, Yun Li, George Papanicolaou, Jerome I Rotter, Ryo Kurita, Yukio Nakamura, Sharon R Browning, Ruth J F Loos, Kari E North, Cathy C Laurie, Timothy A Thornton, Nathan Pankratz, Daniel E Bauer, Tamar Sofer, Alex P Reiner
Prior GWAS have identified loci associated with red blood cell (RBC) traits in populations of European, African, and Asian ancestry. These studies have not included individuals with an Amerindian ancestral background, such as Hispanics/Latinos, nor evaluated the full spectrum of genomic variation beyond single nucleotide variants. Using a custom genotyping array enriched for Amerindian ancestral content and 1000 Genomes imputation, we performed GWAS in 12,502 participants of Hispanic Community Health Study and Study of Latinos (HCHS/SOL) for hematocrit, hemoglobin, RBC count, RBC distribution width (RDW), and RBC indices...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28450792/long-term-outcomes-of-the-bankart-and-latarjet-repairs-a-systematic-review
#7
Natalie C Rollick, Yohei Ono, Hafeez M Kurji, Atiba A Nelson, Richard S Boorman, Gail M Thornton, Ian Ky Lo
The most common surgical techniques for the treatment of recurrent anterior shoulder instability include the arthroscopic Bankart repair, the open Bankart repair and the open Latarjet procedure. The purpose of this study was to evaluate and compare the long-term outcomes following these procedures. A systematic review of modern procedures with a minimum follow-up of 5 years was completed. The objective outcome measures evaluated were post-operative dislocation and instability rate, the Rowe score, radiographic arthritis and complications...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28434434/local-structural-damage-evaluation-of-a-c-c-sic-ceramic-matrix-composite
#8
Benedicta D Arhatari, Matthew Zonneveldt, John Thornton, Brian Abbey
Ceramic matrix composites (CMCs) are structural materials, which have useful properties that combine high strength at high temperatures with moderate toughness. Carbon fibers within a matrix of carbon and silicon carbide, called C/C-SiC, are a particular class of CMC noted for their high oxidation resistance. Here we use a combination of four-point bending and X-ray radiography, to study the mechanical failure of C/C-SiC CMCs. Correlating X-ray radiographic and load/displacement curve data reveals that the fiber bundles act to slow down crack propagation during four-point bending tests...
April 24, 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28425465/chytrid-fungus-infection-in-zebrafish-demonstrates-that-the-pathogen-can-parasitize-non-amphibian-vertebrate-hosts
#9
Nicole Liew, Maria J Mazon Moya, Claudia J Wierzbicki, Michael Hollinshead, Michael J Dillon, Christopher R Thornton, Amy Ellison, Jo Cable, Matthew C Fisher, Serge Mostowy
Aquatic chytrid fungi threaten amphibian biodiversity worldwide owing to their ability to rapidly expand their geographical distributions and to infect a wide range of hosts. Combating this risk requires an understanding of chytrid host range to identify potential reservoirs of infection and to safeguard uninfected regions through enhanced biosecurity. Here we extend our knowledge on the host range of the chytrid Batrachochytrium dendrobatidis by demonstrating infection of a non-amphibian vertebrate host, the zebrafish...
April 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28407971/effect-of-phytosanitary-irradiation-on-the-postharvest-quality-of-seedless-kishu-mandarins-citrus-kinokuni-mukakukishu
#10
José de Jesús Ornelas-Paz, María Belén Meza, David Obenland, Karina Rodríguez Friscia, Akanksha Jain, Shantaè Thornton, Anuradha Prakash
Transnational trade of 'Seedless Kishu' mandarins (Citrus kinokuni mukakukishu) would require them to be subjected to a suitable phytosanitary treatment. Irradiation is used as an effective treatment for many fruit, but the effect on quality of kishu mandarins is unknown. 'Seedless Kishu' mandarins were treated with gamma irradiation (150, 400, and 1000Gy) and stored for three weeks at 6°C and then for one week at 20°C. Irradiation at 400 and 1000Gy promoted browning of the calyx end and fungal infection...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28403411/comparison-of-bioreactance-and-echocardiographic-non-invasive-cardiac-output-monitoring-and-myocardial-function-assessment-in-primagravida-women
#11
A Doherty, A El-Khuffash, C Monteith, L McSweeney, C Breatnach, E Kent, E Tully, F Malone, P Thornton
Background.: Non-invasive cardiac output monitoring (NICOM) using bioreactance (BRT) in pregnancy is gaining interest but lacks validation. We compared simultaneous cardiac output (CO) measurements obtained using the NICOM ® (BRT-CO) and echocardiography (echo-CO), and assessed the relationship between maternal characteristics and myocardial performance. Methods.: Paired stroke volume (SV) and CO readings were obtained using NICOM ® and echocardiography, in a group of healthy nulliparous women throughout a 15 min period...
April 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28402971/implicating-receptor-activator-of-nf-%C3%AE%C2%BAb-rank-rank-ligand-signalling-in-microglial-responses-to-toll-like-receptor-stimuli
#12
Anton Kichev, Pascale Eede, Pierre Gressens, Claire Thornton, Henrik Hagberg
Inflammation in the perinatal brain caused by maternal or intrauterine fetal infection is now well established as an important contributor to the development of perinatal brain injury. Exposure to inflammatory products can impair perinatal brain development and act as a risk factor for neurological dysfunction, cognitive disorders, cerebral palsy, or preterm birth. Pre-exposure to inflammation significantly exacerbates brain injury caused by hypoxic/ischaemic insult. Tumour necrosis factor (TNF) is a family of cytokines largely involved in inflammation signalling...
April 13, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28400740/c-command-in-the-grammars-of-children-with-high-functioning-autism
#13
Neha Khetrapal, Rosalind Thornton
A recent study questioned the adherence of children with Autism Spectrum Disorders (ASD) to a linguistic constraint on the use of reflexive pronouns (Principle A) in sentences like Bart's dad is touching himself. This led researchers to question whether children with ASD are able to compute the hierarchical structural relationship of c-command, and raised the possibility that the children rely on a linear strategy for reference assignment. The current study investigates the status of c-command in children with ASD by testing their interpretation of sentences like (1) and (2) that tease apart use of c-command and a linear strategy for reference assignment...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28394895/larval-crowding-accelerates-c-elegans-development-and-reduces-lifespan
#14
Andreas H Ludewig, Clotilde Gimond, Joshua C Judkins, Staci Thornton, Dania C Pulido, Robert J Micikas, Frank Döring, Adam Antebi, Christian Braendle, Frank C Schroeder
Environmental conditions experienced during animal development are thought to have sustained impact on maturation and adult lifespan. Here we show that in the model organism C. elegans developmental rate and adult lifespan depend on larval population density, and that this effect is mediated by excreted small molecules. By using the time point of first egg laying as a marker for full maturity, we found that wildtype hermaphrodites raised under high density conditions developed significantly faster than animals raised in isolation...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28393661/persistence-of-macrocytosis-after-discontinuation-of-zidovudine-in-hiv-infected-patients
#15
Inski Yu, Richard N Greenberg, Timothy N Crawford, Alice C Thornton, Thein Myint
The duration of macrocytosis after stopping zidovudine (ZDV) is unknown. Among 104 HIV-infected patients treated with ZDV for more than 1 year, 84 patients had macrocytosis at ZDV discontinuation. The median mean corpuscular volume (MCV) was 114.6 fL (range 100-128 fL). Patients were divided into 2 groups: those who did (resolved macrocytosis, n = 36) and did not (persistent macrocytosis, n = 48) normalize MCV at 3 to 6 months after ZDV discontinuation. Alcohol use ( P = .02), smoking ( P = .03), and lower (but within normal range) folic acid levels ( P = ...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/28384381/nurses-experiences-with-patients-who-die-from-failure-to-rescue-after-surgery
#16
Cynthia Thornton Bacon
PURPOSE: To describe the lived experiences of hospital nurses caring for surgical patients who died from failure to rescue (FTR). DESIGN: A qualitative phenomenologic approach was used. Methods to ensure rigor and trustworthiness were incorporated into the design. METHODS: The investigator conducted one-on-one semistructured interviews with 14 nurses, and data were analyzed using Colaizzi's methods. FINDINGS: Six themes were identified: (a) the environment surrounding the FTR was unexpected; (b) FTR was unexpected but not preventable; (c) nurses were emotionally ill-prepared for the FTR; (d) nurse outcomes are different in unexpected versus expected death; (e) nurses' roles as protectors are important; and (f) FTR effects future nursing practice...
May 2017: Journal of Nursing Scholarship
https://www.readbyqxmd.com/read/28378620/the-anorexia-nervosa-genetics-initiative-study-description-and-sample-characteristics-of-the-australian-and-new-zealand-arm
#17
Katherine M Kirk, Felicity C Martin, Amy Mao, Richard Parker, Sarah Maguire, Laura M Thornton, Gu Zhu, Kerrie McAloney, Jeremy L Freeman, Phillipa Hay, Sloane Madden, Christine Morgan, Janice Russell, Susan M Sawyer, Elizabeth K Hughes, A Kate Fairweather-Schmidt, Anthea Fursland, Julie McCormack, Fiona Wagg, Jennifer Jordan, Martin A Kennedy, Warren Ward, Tracey D Wade, Cynthia M Bulik, Nicholas G Martin
OBJECTIVES: Anorexia nervosa is a severe psychiatric disorder with high mortality rates. While its aetiology is poorly understood, there is evidence of a significant genetic component. The Anorexia Nervosa Genetics Initiative is an international collaboration which aims to understand the genetic basis of the disorder. This paper describes the recruitment and characteristics of the Australasian Anorexia Nervosa Genetics Initiative sample, the largest sample of individuals with anorexia nervosa ever assembled across Australia and New Zealand...
April 1, 2017: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/28371853/patient-portals-and-broadband-internet-inequality
#18
Adam T Perzynski, Mary Joan Roach, Sarah Shick, Bill Callahan, Douglas Gunzler, Randall Cebul, David C Kaelber, Anne Huml, John Daryl Thornton, Douglas Einstadter
Background: Patient portals have shown potential for increasing health care quality and efficiency. Internet access and other factors influencing patient portal use could worsen health disparities. Methods: Observational study of adults with 1 or more visits to the outpatient clinics of an urban public health care system from 2012 to 2015. We used mixed effects logistic regression to evaluate the association between broadband internet access and (1) patient portal initiation (whether a patient logged in at least 1 time) and (2) messaging, controlling for demographic and neighborhood characteristics...
March 23, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28334935/genome-wide-association-study-of-iron-traits-and-relation-to-diabetes-in-the-hispanic-community-health-study-study-of-latinos-hchs-sol-potential-genomic-intersection-of-iron-and-glucose-regulation
#19
Laura M Raffield, Tin Louie, Tamar Sofer, Deepti Jain, Eli Ipp, Kent D Taylor, George J Papanicolaou, Larissa Avilés-Santa, Leslie A Lange, Cathy C Laurie, Matthew P Conomos, Timothy A Thornton, Yii-Der Ida Chen, Qibin Qi, Scott Cotler, Bharat Thyagarajan, Neil Schneiderman, Jerome I Rotter, Alex P Reiner, Henry J Lin
Genetic variants contribute to normal variation of iron-related traits and may also cause clinical syndromes of iron deficiency or excess. Iron overload and deficiency can adversely affect human health. For example, elevated iron storage is associated with increased diabetes risk, although mechanisms are still being investigated. We conducted the first genome-wide association study of serum iron, total iron binding capacity (TIBC), transferrin saturation, and ferritin in a Hispanic/Latino cohort, the Hispanic Community Health Study/Study of Latinos (>12 000 participants) and also assessed the generalization of previously known loci to this population...
May 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28295207/human-gestation-associated-tissues-express-functional-cytosolic-nucleic-acid-sensing-pattern-recognition-receptors
#20
A H Bryant, G E Menzies, L M Scott, S Spencer-Harty, L B Davies, R A Smith, R H Jones, C A Thornton
The role of viral infections in adverse pregnancy outcomes has gained interest in recent years. Innate immune pattern recognition receptors (PRRs) and their signalling pathways, that yield a cytokine output in response to pathogenic stimuli, have been postulated to link infection at the maternal-fetal interface and adverse pregnancy outcomes. The objective of this study was to investigate the expression and functional response of nucleic acid ligand responsive Toll-like receptors (TLR-3, -7, -8 and -9), and retinoic acid-inducible gene 1 (RIG-I)-like receptors [RIG-I, melanoma differentiation-associated protein 5 (MDA5) and Laboratory of Genetics and Physiology 2(LGP2)] in human term gestation-associated tissues (placenta, choriodecidua and amnion) using an explant model...
March 13, 2017: Clinical and Experimental Immunology
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