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https://www.readbyqxmd.com/read/28512860/intrinsic-cellular-and-molecular-properties-of-in-vivo-hippocampal-synaptic-plasticity-are-altered-in-the-absence-of-key-synaptic-matrix-molecules
#1
Stephan Jansen, Christine Gottschling, Andreas Faissner, Denise Manahan-Vaughan
Hippocampal synaptic plasticity comprises a key cellular mechanism for information storage. In the hippocampus, both long-term potentiation (LTP) and long-term depression (LTD) are triggered by synaptic Ca(2+) -elevations that are typically mediated by the opening of voltage-gated cation channels, such as N-methyl-D-aspartate receptors (NMDAR), in the postsynaptic density. The integrity of the post-synaptic density is ensured by the extracellular matrix (ECM). Here, we explored whether synaptic plasticity is affected in adult behaving mice that lack the ECM proteins brevican, neurocan, tenascin-C and tenascin-R (TG)...
May 17, 2017: Hippocampus
https://www.readbyqxmd.com/read/28495199/an-automated-multiplex-tandem-pcr-platform-for-the-diagnosis-of-gastrointestinal-nematode-infections-in-cattle-an-australian-european-validation-study
#2
Florian Roeber, Ebrahim Bani Hassan, Philip Skuce, Alison Morrison, Edwin Claerebout, Stijn Casaert, David R Homer, Simon Firestone, Mark Stevenson, Lee Smith, John Larsen
Detecting the genera and species of gastrointestinal (GI) nematode infections in faecal samples obtained from cattle requires the incubation of faeces ('larval culture') followed by identification of the third-stage larvae that are harvested after 10-14days. Substantial research in the development of PCR-based methods for the rapid and specific identification GI nematodes has been conducted for small ruminants, whilst only few such assays have been developed for cattle. In the present paper we describe the development of an automated, robotic PCR platform for the detection and genus and/or species-specific identification of GI nematodes from bovine faecal samples...
May 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28429277/primary-ewing-sarcoma-primitive-neuroectodermal-tumor-of-the-kidney-a-clinicopathologic-study-of-23-cases
#3
Paari Murugan, Priya Rao, Pheroze Tamboli, Bogdan Czerniak, Charles C Guo
Primary Ewing sarcoma / primitive neuroectodermal tumor (ES) of the kidney is a rare neoplasm with limited clinicopathologic data. We report 23 such cases with no history of ES elsewhere in the body. The patients included 13 male and 10 female, aged 8-70 years (mean, 31 years). The average tumor size was 11.7 cm (range, 5-20 cm). Microscopic analysis showed predominantly lobular growth (n = 14), with focal papillary (n = 3), alveolar (n = 1), and hemangiopericytoma-like (n = 1) patterns. Several tumors (n = 11) exhibited robust mitotic activity (>10 mitoses/10 high-power fields)...
April 20, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28416429/-life-threatening-sleepwalking-elpenor-s-syndrome-in-a-10-year-old-child
#4
M-A Madigand-Tordjman, P-J Egler, F Bertran, M Jokic, F Guénolé
Though benign in the majority of cases, sleepwalking sometimes causes injuries due, among other causes, to falls. Such accidents can be life-threatening - a situation that has been termed Elpenor syndrome (in reference to an accident experienced by a character in Homer's epic The Odyssey) - in particular when entailing defenestration. This syndrome has been described in adults and adolescents; we report here a case in a child. OBSERVATION: This 10-year-old girl was admitted at night to our hospital after a 3-m fall at home...
April 14, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28384877/renal-primitive-neuroectodermal-tumour-case-report-of-a-rare-entity
#5
Sai Chandana Gali, B N Kumarguru, Balachandra Bhat, A S Ramaswamy, M Udaya Kumar
The peripheral Primitive Neuroectodermal Tumour (PNET) is a member of the family of small round cell tumours. PNET is more aggressive in kidney when compared to the other sites. It usually presents in childhood or adolescence. It has an aggressive clinical course and may process towards metastatic disease culminating in death. A 24-year-old female presented with left sided abdominal swelling. Abdominal ultrasound confirmed a heterogeneous left renal mass. Consequently the patient underwent nephrectomy of left kidney and left oophorectomy...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28376845/rare-adrenal-gland-incidentaloma-an-unusual-ewing-s-sarcoma-family-of-tumor-presentation-and-literature-review
#6
Hui Guo, Shuaiqi Chen, Shukun Liu, Kaixuan Wang, Erpeng Liu, Faping Li, Yuchuan Hou
BACKGROUND: Members of the Ewing's sarcoma family of tumor (ESFT) are malignant neoplasms and rarely observed in the adrenal gland. CASE PRESENTATION: We report an extremely exceptional case of ESFT rising from the adrenal gland in a 57-year-old Chinese man. The patient was hospitalized with abdominal swelling for 2 months. Computed tomography (CT) scan revealed a nearly-circular mass measuring about 8.1 × 10.6 cm in the right adrenal region. The patient underwent right adrenal resection...
April 4, 2017: BMC Urology
https://www.readbyqxmd.com/read/28375169/an-assessment-of-early-response-to-targeted-therapy-via-molecular-imaging-a-pilot-study-of-3-deoxy-3-18-f-fluorothymidine-positron-emission-tomography-18-f-flt-pet-ct-in-prostate-adenocarcinoma
#7
Kalevi Kairemo, Gregory C Ravizzini, Homer A Macapinlac, Vivek Subbiah
Fluorothymidine is a thymidine analog labeled with fluorine-18 fluorothymidine for positron emission tomography ((18)F-FLT-PET) imaging. Thymidine is a nucleic acid that is used to build DNA. Fluorine-18 fluorothymidine ((18)F-FLT) utilizes the same metabolic pathway as does thymidine but has a very low incidence of being incorporated into the DNA (<1%). (18)F-FLT-PET could have a role in the evaluation of response to targeted therapy. We present here a pilot study where we investigated cellular metabolism and proliferation in patients with prostate cancer before and after targeted therapy...
April 4, 2017: Diagnostics
https://www.readbyqxmd.com/read/28337750/efficacy-and-safety-of-the-drugs-used-to-reverse-direct-oral-anticoagulants-a-systematic-review-and-meta-analysis
#8
REVIEW
Luis Teodoro da Luz, Mylene Marchand, Bartolomeu Nascimento, Homer Tien, Avery Nathens, Prakesh Shah
BACKGROUND: Direct oral anticoagulants (DOACs) are effective and safe for prophylaxis and treatment of thromboembolic phenomena. However, managing DOACs during bleeding emergencies is challenging. A systematic review and meta-analysis was conducted on studies addressing efficacy and safety of the drugs used for reversal of DOACs. STUDY DESIGN AND METHODS: Medline, Embase, Cochrane Library, and ClinicalTrials.gov were searched up to September 2016. Studies that examined clinical and laboratory effects of drugs used to reverse DOACs were included...
March 24, 2017: Transfusion
https://www.readbyqxmd.com/read/28337539/homer1-vesl-1-in-the-rat-esophagus-focus-on-myenteric-plexus-and-neuromuscular-junction
#9
J Zimmermann, W L Neuhuber, M Raab
Homer1, a scaffolding protein of the postsynaptic density (PSD), enriched at excitatory synapses is known to anchor and modulate group I metabotropic glutamate receptors (mGluRs) and different channel- and receptor-proteins. Homer proteins are expressed in neurons of different brain regions, but also in non-neuronal tissues like skeletal muscle. Occurrence and location of Homer1 and mGluR5 in myenteric plexus and neuromuscular junctions (NMJ) of rat esophagus have yet not been characterized. We located Homer1 and mGluR5 immunoreactivity (-iry) in rat esophagus and focused on myenteric neurons, intraganglionic laminar endings (IGLEs) and NMJs, using double- and triple-label immunohistochemistry and confocal laser scanning microscopy...
March 23, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28335736/the-association-of-emergency-department-presentations-in-pregnancy-with-hospital-admissions-for-postnatal-depression-pnd-a-cohort-study-based-on-linked-population-data
#10
Fenglian Xu, Elizabeth A Sullivan, Roberto Forero, Caroline S E Homer
BACKGROUND: To investigate the impact of presenting to an Emergency Department (ED) during pregnancy on postnatal depression (PND) in women in New South Wales (NSW), Australia. METHOD: An epidemiological population-based study using linked data from the NSW Emergency Department Data Collection (EDDC), the NSW Perinatal Data Collection (PDC) and the NSW Admitted Patients Data Collection (APDC) was conducted. Women who gave birth to their first child in NSW between 1 January 2006 and 31 December 2010 were followed up from pregnancy to the end of the first year after birth...
March 23, 2017: BMC Emergency Medicine
https://www.readbyqxmd.com/read/28306571/cns-syndromes-associated-with-antibodies-against-metabotropic-receptors
#11
Eric Lancaster
PURPOSE OF REVIEW: Autoantibodies to Central nervous system (CNS) metabotropic receptors are associated with a growing family of autoimmune brain diseases, including encephalitis, basal ganglia encephalitis, Ophelia syndrome, and cerebellitis. The purpose of this review is to summarize the state of knowledge regarding the target receptors, the neurological autoimmune disorders, and the pathogenic mechanisms. RECENT FINDINGS: Antibodies to the γ-aminobutyric acid B receptor are associate with limbic encephalitis and severe seizures, often with small cell lung cancers...
June 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28278348/a-prospective-multi-institutional-pathologist-based-assessment-of-4-immunohistochemistry-assays-for-pd-l1-expression-in-non-small-cell-lung-cancer
#12
David L Rimm, Gang Han, Janis M Taube, Eunhee S Yi, Julia A Bridge, Douglas B Flieder, Robert Homer, William W West, Hong Wu, Anja C Roden, Junya Fujimoto, Hui Yu, Robert Anders, Ashley Kowalewski, Christopher Rivard, Jamaal Rehman, Cory Batenchuk, Virginia Burns, Fred R Hirsch, Ignacio I Wistuba
Importance: Four assays registered with the US Food and Drug Administration (FDA) detect programmed cell death ligand 1 (PD-L1) to enrich for patient response to anti-programmed cell death 1 and anti-PD-L1 therapies. The tests use 4 separate PD-L1 antibodies on 2 separate staining platforms and have their own scoring systems, which raises questions about their similarity and the potential interchangeability of the tests. Objective: To compare the performance of 4 PD-L1 platforms, including 2 FDA-cleared assays, 1 test for investigational use only, and 1 laboratory-developed test...
March 9, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28211796/fluence-correction-factor-for-graphite-calorimetry-in-a-clinical-high-energy-carbon-ion-beam
#13
A Lourenço, R Thomas, M Homer, H Bouchard, S Rossomme, J Renaud, T Kanai, G Royle, H Palmans
The aim of this work is to develop and adapt a formalism to determine absorbed dose to water from graphite calorimetry measurements in carbon-ion beams. Fluence correction factors, [Formula: see text], needed when using a graphite calorimeter to derive dose to water, were determined in a clinical high-energy carbon-ion beam. Measurements were performed in a 290 MeV/n carbon-ion beam with a field size of 11  ×  11 cm(2), without modulation. In order to sample the beam, a plane-parallel Roos ionization chamber was chosen for its small collecting volume in comparison with the field size...
April 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28190872/upper-airway-obstruction-requiring-emergent-tracheostomy-secondary-to-laryngeal-sarcoidosis-a-case-report
#14
Changwan Ryu, Erica L Herzog, Hongyi Pan, Robert Homer, Mridu Gulati
BACKGROUND Laryngeal sarcoidosis is a rare extrapulmonary manifestation of sarcoidosis, accounting for 0.33-2.1% of cases. A life-threatening complication of laryngeal sarcoidosis is upper airway obstruction. In this report we describe our experience in the acute and chronic care of a patient who required an emergent tracheostomy, with the aim to provide further insight into this difficult to manage disease. CASE REPORT A 37-year-old African American female with a 10-year history of stage 1 sarcoidosis presented with severe dyspnea...
February 13, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28187771/the-effect-of-estradiol-on-granulosa-cell-responses-to-fsh-in-women-with-polycystic-ovary-syndrome
#15
Michael V Homer, Marcus A Rosencrantz, Rana F Shayya, R Jeffrey Chang
BACKGROUND: The influence of estradiol (E2) on granulosa cell (GC) function has not been tested clinically in women with polycystic ovary syndrome (PCOS). The objective of this study is to determine if E2 influences GC responses to FSH in women with PCOS. METHODS: This is a two phase, single cohort study conducted over a 2-year period at a single academic center. Nine women with PCOS according to NIH criteria. In Phase 1, FSH stimulation of GC responses as measured by E2 and Inhibin B (Inh B) were assessed before and at 5 and 6 weeks after GnRH agonist administration...
February 10, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28137784/reducing-liver-function-tests-for-statin-monitoring-an-observational-comparison-of-two-clinical-commissioning-groups
#16
COMPARATIVE STUDY
Kate Homer, John Robson, Susannah Solaiman, Abigail Davis, Saima Zubeda Khan, David McCoy, Rohini Mathur, Sally Hull, Kambiz Boomla
BACKGROUND: Current liver function testing for statin monitoring is largely unnecessary and costly. Statins do not cause liver disease. Both reduction in test frequency and use of a single alanine transaminase (ALT) rather than a full seven analyte liver function test (LFT) array would reduce cost and may benefit patients. AIM: To assess LFT testing in relation to statin use and evaluate an intervention to reduce full-array LFTs ordered by GPs for statin monitoring...
March 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28118206/the-gender-gap-a-longitudinal-examination-of-men-s-and-women-s-art-adherence-in-british-columbia-2000-2014
#17
Cathy M Puskas, Angela Kaida, Cari L Miller, Wendy Zhang, Benita Yip, Neora Pick, Julio S G Montaner, Robert S Hogg
OBJECTIVE: The aim of this study was to observe the effect of sex on attaining optimal adherence to combination antiretroviral therapy (cART) longitudinally, while controlling for known adherence confounders: injection drug use (IDU) and ethnicity. DESIGN: Using the population-based HAART Observational Medical Evaluation and Research (HOMER) cohort, data were collected from HIV-positive adults, ≥19 years, receiving cART in British Columbia (BC), Canada, with data collected between 2000 and 2014...
January 21, 2017: AIDS
https://www.readbyqxmd.com/read/28111165/predicting-falls-in-people-aged-65-years-and-older-from-insurance-claims
#18
Mark L Homer, Nathan P Palmer, Kathe P Fox, Joanne Armstrong, Kenneth D Mandl
BACKGROUND: Accidental falls among people aged 65 years and older caused approximately 2,700,000 injuries, 27,000 deaths, and cost more than 34 billion dollars in the US annually in recent years. Here, we derive and validate a predictive model for falls based on a retrospective cohort of those 65 years and older. METHODS: Insurance claims from a 1-year observational period were used to predict a fall-related claim in the following 2 years. The predictive model takes into account a person's age, sex, prescriptions, and diagnoses...
January 20, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28060028/kinetics-of-angiogenic-responses-in-corneal-transplantation
#19
Takenori Inomata, Alireza Mashaghi, Antonio Di Zazzo, Sang-Mok Lee, Homer Chiang, Reza Dana
PURPOSE: To delineate and compare the kinetics of corneal angiogenesis after high-risk (HR) versus low-risk (LR) corneal transplantation. METHODS: In mice, intrastromal sutures were placed in the recipient graft bed 2 weeks before allogeneic transplantation to induce angiogenesis and amplify the risk of graft rejection. Control (LR) graft recipients did not undergo suture placement, and thus the host bed remained avascular at the time of transplantation. Graft hemangiogenesis and opacity scores were evaluated for 8 weeks by slit-lamp biomicroscopy...
April 2017: Cornea
https://www.readbyqxmd.com/read/28008418/regulation-of-group-i-metabotropic-glutamate-receptors-by-mapk-erk-in-neurons
#20
Li-Min Mao, John Q Wang
Group I metabotropic glutamate receptors (mGluR1 and mGluR5 subtypes) are regulated by protein kinases. A recent focus is mitogen-activated protein kinases (MAPK). A prototypic subclass of MAPKs, extracellular signal-regulated kinases (ERK), is densely expressed in adult brain postmitotic neurons. This kinase resides in not only the cytoplasm around the nucleus, also the neuronal peripheral structures such as synapses. Recombinant ERK2 binds to C terminal tails of mGluR1a in vitro and native ERK1/2 forms complexes with mGluR1/5 in neurons in vivo...
2016: Journal of Nature and Science
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