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https://www.readbyqxmd.com/read/28726769/activity-dependent-feedback-inhibition-may-maintain-head-direction-signals-in-mouse-presubiculum
#1
Jean Simonnet, Mérie Nassar, Federico Stella, Ivan Cohen, Bertrand Mathon, Charlotte N Boccara, Richard Miles, Desdemona Fricker
Orientation in space is represented in specialized brain circuits. Persistent head direction signals are transmitted from anterior thalamus to the presubiculum, but the identity of the presubicular target neurons, their connectivity and function in local microcircuits are unknown. Here, we examine how thalamic afferents recruit presubicular principal neurons and Martinotti interneurons, and the ensuing synaptic interactions between these cells. Pyramidal neuron activation of Martinotti cells in superficial layers is strongly facilitating such that high-frequency head directional stimulation efficiently unmutes synaptic excitation...
July 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28717385/changes-in-diet-associated-with-cancer-an-evolutionary-perspective
#2
Frédéric Thomas, Sophie Rome, Frédéric Mery, Erika Dawson, Jacques Montagne, Peter A Biro, Christa Beckmann, François Renaud, Robert Poulin, Michel Raymond, Beata Ujvari
Changes in diet are frequently correlated with the occurrence and progression of malignant tumors (i.e., cancer) in both humans and other animals, but an integrated conceptual framework to interpret these changes still needs to be developed. Our aim is to provide a new perspective on dietary changes in tumor-bearing individuals by adapting concepts from parasitology. Dietary changes may occur alongside tumor progression for several reasons: (i) as a pathological side effect with no adaptive value, (ii) as the result of self-medication by the host to eradicate the tumor and/or to slow down its progression, (iii) as a result of host manipulation by the tumor that benefits its progression, and finally (iv) as a host tolerance strategy, to alleviate and repair damages caused by tumor progression...
August 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/28709660/effect-of-gastrointestinal-malformations-on-the-outcomes-of-patients-with-congenital-heart-disease
#3
Carlos M Mery, Luis E De León, J Rubén Rodriguez, R Michael Nieto, Wei Zhang, Iki Adachi, Jeffrey S Heinle, Lauren C Kane, E Dean McKenzie, Charles D Fraser
BACKGROUND: The goal of this study was to assess the effect of associated gastrointestinal malformations (GI) on the outcomes of patients undergoing congenital heart operations. METHODS: Neonates and infants with thoracic (esophageal atresia, tracheoesophageal fistula) and abdominal (duodenal stenosis/atresia, imperforate anus, Hirschsprung disease) GI malformations undergoing congenital heart operations between 1995 and 2015 were included. Two control groups were created, one for each group...
July 11, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28700750/correction-genotypic-and-phenotypic-diversity-of-lactobacillus-rhamnosus-clinical-isolates-their-comparison-with-strain-gg-and-their-recognition-by-complement-system
#4
Eija Nissilä, François P Douillard, Jarmo Ritari, Lars Paulin, Hanna M Järvinen, Pia Rasinkangas, Karita Haapasalo, Seppo Meri, Hanna Jarva, Willem M de Vos
[This corrects the article DOI: 10.1371/journal.pone.0176739.].
2017: PloS One
https://www.readbyqxmd.com/read/28670826/current-practices-are-variable-in-the-evaluation-and-management-of-patients-with-anomalous-aortic-origin-of-a-coronary-artery-results-of-a-survey
#5
Hitesh Agrawal, Carlos M Mery, Patrick E Day, S Kristen Sexson Tejtel, E Dean McKenzie, Charles D Fraser, Athar M Qureshi, Silvana Molossi
BACKGROUND: Anomalous aortic origin of a coronary artery (AAOCA) is the second leading cause of sudden cardiac death in young athletes in the USA. Long-term outcome data for these patients are lacking to date. There is insufficient knowledge on the best approach to these patients and they are managed in a nonuniform manner. METHODS: An online survey of 15 questions regarding management of AAOCA was sent out to 198 cardiac healthcare providers. The goal was to define gaps in knowledge to justify a dedicated scientific forum for discussion of AAOCA...
July 2, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28668353/salsa-a-dance-on-a-slippery-floor-with-changing-partners
#6
M P Reichhardt, U Holmskov, S Meri
It is becoming increasingly clear that the connections between our immune system and the microbiota colonizing us have a tremendous impact on human health. A number of innate molecular defence mechanisms cooperate to selectively target unwanted microorganisms at the mucosal surfaces. Amongst others these include the complement system, IgA and the SALSA molecule. The salivary scavenger and agglutinin (SALSA), also known as deleted in malignant brain tumors 1 (DMBT1), salivary agglutinin (SAG) or gp340 is a multifunctional molecule with important functions in innate immunity, inflammation and epithelial homeostasis...
June 28, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28658260/spatiotemporal-variability-and-environmental-factors-of-harmful-algal-blooms-habs-over-western-lake-erie
#7
Di Tian, Gengxin Xie, Jing Tian, Kuo-Hsin Tseng, C K Shum, Jiyoung Lee, Song Liang
Over the past decades, numerous studies have been carried out in understanding causes of Harmful Algal Blooms (HABs) and their dynamics, yielding great knowledge in this field. Lake Erie, the fourth-largest lake of the five Great Lake, is among those highly vulnerable to the impacts of HABs and has received substantial attention from the public, water management sectors, and academic field. Building upon previous work, this study aims to characterize spatiotemporal variability of Chlorophyll a (Chl-a), which is an important indicator of HABs, and to explore relative importance of environmental factors associated with HABs in the west Lake Erie...
2017: PloS One
https://www.readbyqxmd.com/read/28655446/cerebral-autoregulation-making-sense-of-the-nonsensical
#8
EDITORIAL
Ken M Brady, Carlos M Mery
No abstract text is available yet for this article.
May 31, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28652462/protective-low-frequency-variants-for-preeclampsia-in-the-fms-related-tyrosine-kinase-1-gene-in-the-finnish-population
#9
A Inkeri Lokki, Emma Daly, Michael Triebwasser, Mitja I Kurki, Elisha D O Roberson, Paavo Häppölä, Kirsi Auro, Markus Perola, Seppo Heinonen, Eero Kajantie, Juha Kere, Katja Kivinen, Anneli Pouta, Jane E Salmon, Seppo Meri, Mark Daly, John P Atkinson, Hannele Laivuori
Preeclampsia is a common pregnancy-specific vascular disorder characterized by new-onset hypertension and proteinuria during the second half of pregnancy. Predisposition to preeclampsia is in part heritable. It is associated with an increased risk of cardiovascular disease later in life. We have sequenced 124 candidate genes implicated in preeclampsia to pinpoint genetic variants contributing to predisposition to or protection from preeclampsia. First, targeted exomic sequencing was performed in 500 preeclamptic women and 190 controls from the FINNPEC cohort (Finnish Genetics of Preeclampsia Consortium)...
August 2017: Hypertension
https://www.readbyqxmd.com/read/28644649/role-of-a-neighbor-ion-in-the-fragmentation-dynamics-of-covalent-molecules
#10
A Méry, A N Agnihotri, J Douady, X Fléchard, B Gervais, S Guillous, W Iskandar, E Jacquet, J Matsumoto, J Rangama, F Ropars, C P Safvan, H Shiromaru, D Zanuttini, A Cassimi
Fragmentation of molecular nitrogen dimers (N_{2})_{2} induced by collision with low energy 90 keV Ar^{9+} ions is studied to evidence the influence of a molecular environment on the fragmentation dynamics of N_{2} cations. Following the capture of three or four electrons from the dimer, the three-body N_{2}^{+}+N^{m+}+N^{n+} [with (m,n)=(1,1) or (1, 2)] fragmentation channels provide clean experimental cases where molecular fragmentation may occur in the presence of a neighbor molecular cation. The effect of the environment on the fragmentation dynamics within the dimer is investigated through the comparison of the kinetic energy release (KER) spectra for these three-body channels and for isolated N_{2}^{(m+n)+} monomer cations...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28619621/immunohistochemical-evaluation-of-two-antibodies-against-pd-l1-and-prognostic-significance-of-pd-l1-expression-in-epithelioid-peritoneal-malignant-mesothelioma-a%C3%A2-renape-study
#11
S Valmary-Degano, P Colpart, L Villeneuve, F Monnien, L M'Hamdi, G Lang Averous, M Capovilla, F Bibeau, M-H Laverriere, V Verriele-Beurrier, H Ben Rejeb, P Dartigues, J Hommell-Fontaine, F-N Gilly, S Isaac, E Mery
BACKGROUND: Epithelioid peritoneal malignant mesothelioma (EPMM) is the most common subtype of this aggressive tumor. We compared two antibodies against PD-L1, a recent theranostic biomarker, and evaluated the prognostic value of PD-L1 expression by mesothelial and immune cells in EPMM. METHODS: Immunohistochemistry was performed on 45 EPMM. Clinical and pathological data were extracted from the RENAPE database. Using E1L3N and SP142 clones, inter-observer agreement, PD-L1 expression by mesothelial and immune cells and inter-antibody agreement were evaluated...
May 18, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28614593/inconsistencies-of-interannual-variability-and-trends-in-long-term-satellite-leaf-area-index-products
#12
Chongya Jiang, Youngryel Ryu, Hongliang Fang, Ranga Myneni, Martin Claverie, Zaichun Zhu
Understanding the long-term performance of global satellite leaf area index (LAI) products is important for global change research. However, few effort has been devoted to evaluating the long-term time series consistencies of LAI products. This study compared four long-term LAI products (GLASS, GLOBMAP, LAI3g, and TCDR) in terms of trends, interannual variabilities and uncertainty variations from 1982 through 2011. This study also used four ancillary LAI products (GEOV1, MERIS, MODIS C5, and MODIS C6) from 2003 through 2011 to help clarify the performances of the four long-term LAI products...
June 14, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28611769/analysis-of-complement-c3-gene-reveals-susceptibility-to-severe-preeclampsia
#13
A Inkeri Lokki, Tea Kaartokallio, Ville Holmberg, Päivi Onkamo, Lotta L E Koskinen, Päivi Saavalainen, Seppo Heinonen, Eero Kajantie, Juha Kere, Katja Kivinen, Anneli Pouta, Pia M Villa, Leena Hiltunen, Hannele Laivuori, Seppo Meri
Preeclampsia (PE) is a common vascular disease of pregnancy with genetic predisposition. Dysregulation of the complement system has been implicated, but molecular mechanisms are incompletely understood. In this study, we determined the potential linkage of severe PE to the most central complement gene, C3. Three cohorts of Finnish patients and controls were recruited for a genetic case-control study. Participants were genotyped using Sequenom genotyping and Sanger sequencing. Initially, we studied 259 Finnish patients with severe PE and 426 controls from the Southern Finland PE and the Finnish population-based PE cohorts...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28609937/generic-reclassification-of-species-formerly-included-in-i-rhantus-i-dejean-coleoptera-dytiscidae-colymbetinae
#14
Michael Balke, Jiří Hájek, Lars Hendrich
A reclassification of several species traditionally included in Rhantus Dejean, 1833 is given: Nartus Zaitzev, 1907 is re-instated as genus with one species in the Nearctic and one in the Palaearctic region; two new genera are erected: Meri-diorhantus n. gen., with M. antarcticus (Germain, 1854) n. comb., M. calidus (Fabricius, 1792) n. comb., M. limbatus (Aubé, 1838) n. comb., M. orbignyi (Balke, 1992) n. comb., M. validus (Sharp, 1882) n. comb. in the Neotropical region (M. calidus also in the southern USA and along the eastern coast as far north as New York City), and the monotypic Caperhantus n...
April 26, 2017: Zootaxa
https://www.readbyqxmd.com/read/28602249/ten-year-survey-of-cyanobacterial-blooms-in-ohio-s-waterbodies-using-satellite-remote-sensing
#15
Tyler Gorham, Yuanyuan Jia, C K Shum, Jiyoung Lee
Cyanobacterial blooms are on the rise globally and are capable of adversely impacting human, animal, and ecosystem health. Blooms dominated by cyanobacteria species capable of toxin-production are commonly observed in eutrophic freshwater. The presence of cyanobacterial blooms in selected Ohio lakes, such as Lake Erie and Grand Lake St. Marys, has been well studied, but much less is known about the geographic distribution of these blooms across all of Ohio's waterbodies. We examined the geographic distribution of cyanobacterial blooms in Ohio's waterbodies from 2002 to 2011, using a nested semi-empirical algorithm and remotely sensed data from the Medium Resolution Imaging Spectrometer (MERIS) onboard the European Space Agency's Envisat...
June 2017: Harmful Algae
https://www.readbyqxmd.com/read/28599362/determination-of-phytoplankton-abundances-chlorophyll-a-in-the-optically-complex-inland-water-the-baltic-sea
#16
Daoxi Zhang, Samantha Lavender, Jan-Peter Muller, David Walton, Bengt Karlson, Johan Kronsell
A novel approach, termed Summed Positive Peaks (SPP), is proposed for determining phytoplankton abundances (Chlorophyll-a or Chl-a) and surface phytoplankton bloom extent in the optically complex Baltic Sea. The SPP approach is established on the basis of a baseline subtraction method using Rayleigh corrected top-of-atmosphere data from the Medium Resolution Imaging Spectrometer (MERIS) measurements. It calculates the reflectance differences between phytoplankton related signals observed in the MERIS red and near infrared (NIR) bands, such as sun-induced chlorophyll fluorescence (SICF) and the backscattering at 709nm, and considers the summation of the positive line heights for estimating Chl-a concentrations...
June 4, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28598033/decision-making-in-anomalous-aortic-origin-of-a-coronary-artery
#17
Carlos M Mery
Anomalous aortic origin of a coronary artery (AAOCA) is the second most common cause of sudden cardiac death (SCD) in young athletes in United States. The exact pathophysiological mechanisms of SCD are unknown. There is lack of long-term outcome data on repaired and unrepaired AAOCA and our current risk stratification scheme for these patients is suboptimal. These patients are evaluated in a nonuniform manner across institutions in United States, and even by different providers residing in the same institution...
June 9, 2017: Congenital Heart Disease
https://www.readbyqxmd.com/read/28593897/factors-that-influence-the-virological-response-in-patients-with-chronic-hepatitis-c-treated-with-pegylated-interferon-and-ribavirin
#18
Beti Todorovska, Nenad Joksimovic, Viktorija Caloska-Ivanova, Magdalena Dimitrova-Genadieva, Meri Trajkovska, Elena Curakova, Sanja Kiprijanovska, Beti Zafirova-Ivanovska, Vladimir Serafimoski
INTRODUCTION: The success of the antiviral treatment in patients with chronic hepatitis C depends on the factors related to the virus and the host. The aim of the study is the analysis of the antiviral therapy which is a combination of pegylated interferon and ribavirin, considering various factors that will identify the predictors of the sustained virological response. MATERIAL AND METHODS: This retrospective study included 226 patients, divided in two groups. Patients with sustained virological response and patients without sustained virological response were compared in terms of the following factors: genotype, viral load, gender, age, inflammatory and fibrotic changes in the liver, metabolic abnormalities, obesity and fatty liver...
March 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/28593885/prognostic-factors-on-the-positivity-for-metastases-of-the-axillary-lymph-nodes-from-primary-breast-cancer
#19
Borislav Kondov, Goran Kondov, Zoran Spirovski, Zvonko Milenkovikj, Risto Colanceski, Gordana Petrusevska, Meri Pesevska
AIM: The aim of the study was to identify the impact of T stage, the presence of estrogen, progesterone, HER2neu receptors and the values of the Ki67 on the positivity for metastases of the axillary lymph nodes, from primary breast cancer. MATERIAL AND METHODS: 290 surgically treated patients for breast cancer were included in the study. All cases have been analyzed by standard histological analysis including microscopic analysis on standard H&E staining. For determining the molecular receptors - HER2neu, ER, PR, p53 and Ki67, immunostaining by PT LINK immunoperoxidase has been done...
March 1, 2017: Prilozi (Makedonska Akademija Na Naukite i Umetnostite. Oddelenie za Medicinski Nauki)
https://www.readbyqxmd.com/read/28592604/a-methodologic-framework-for-modeling-and-assessing-biomarkers-of-environmental-enteropathy-as-predictors-of-growth-in-infants-an-example-from-a-peruvian-birth-cohort
#20
Josh M Colston, Pablo Peñataro Yori, Elizabeth Colantuoni, Lawrence H Moulton, Ramya Ambikapathi, Gwenyth Lee, Dixner Rengifo Trigoso, Mery Siguas Salas, Margaret N Kosek
Background: Environmental enteropathy (EE) impairs the gut's absorptive capacity and immune function and causes decelerations in statural growth that manifest gradually over time.Objective: To illustrate an approach for assessing emerging biomarkers of EE, we separately assessed the associations between 3 such markers and subsequent nutritional status.Design: Stool samples were routinely collected between January 2010 and November 2014 from a cohort of 303 Peruvian infants and analyzed for concentrations of the biomarkers α-1-antitrypsin (AAT), myeloperoxidase, and neopterin...
June 7, 2017: American Journal of Clinical Nutrition
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