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https://www.readbyqxmd.com/read/28522792/transgenic-autoinhibition-of-p21-activated-kinase-exacerbates-synaptic-impairments-and-fronto-dependent-behavioral-deficits-in-an-animal-model-of-alzheimer-s-disease
#1
Cyril Bories, Dany Arsenault, Myriam Lemire, Cyntia Tremblay, Yves De Koninck, Frédéric Calon
Defects in p21-activated kinase (PAK) lead to dendritic spine abnormalities and are sufficient to cause cognition impairment. The decrease in PAK in the brain of Alzheimer's disease (AD) patients is suspected to underlie synaptic and dendritic disturbances associated with its clinical expression, particularly with symptoms related to frontal cortex dysfunction. To investigate the role of PAK combined with Aβ and tau pathologies (3xTg-AD mice) in the frontal cortex, we generated a transgenic model of AD with a deficit in PAK activity (3xTg-AD-dnPAK mice)...
May 16, 2017: Aging
https://www.readbyqxmd.com/read/28516946/ccl2-ccr2-signalling-recruits-a-distinct-fetal-microchimeric-population-that-rescues-delayed-maternal-wound-healing
#2
Mathieu Castela, Dany Nassar, Maria Sbeih, Marie Jachiet, Zhe Wang, Selim Aractingi
Foetal microchimeric cells (FMCs) traffic into maternal circulation during pregnancy and persist for decades after delivery. Upon maternal injury, FMCs migrate to affected sites where they participate in tissue healing. However, the specific signals regulating the trafficking of FMCs to injury sites had to be identified. Here we report that, in mice, a subset of FMCs implicated in tissue repair displays CD11b(+) CD34(+) CD31(+) phenotype and highly express C-C chemokine receptor 2 (Ccr2). The Ccr2 ligand chemokine ligand 2 (Ccl2) enhances the recruitment of FMCs to maternal wounds where these cells transdifferentiate into endothelial cells and stimulate angiogenesis through Cxcl1 secretion...
May 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28515365/ceramide-synthesis-regulates-t-cell-activity-and-gvhd-development
#3
M Hanief Sofi, Jessica Heinrichs, Mohammed Dany, Hung Nguyen, Min Dai, David Bastian, Steven Schutt, Yongxia Wu, Anusara Daenthanasanmak, Salih Gencer, Aleksandra Zivkovic, Zdzislaw Szulc, Holger Stark, Chen Liu, Ying-Jun Chang, Besim Ogretmen, Xue-Zhong Yu
Allogeneic hematopoietic cell transplantation (allo-HCT) is an effective immunotherapy for a variety of hematologic malignances, yet its efficacy is impeded by the development of graft-versus-host disease (GVHD). GVHD is characterized by activation, expansion, cytokine production, and migration of alloreactive donor T cells. Hence, strategies to limit GVHD are highly desirable. Ceramides are known to contribute to inflammation and autoimmunity. However, their involvement in T-cell responses to alloantigens is undefined...
May 18, 2017: JCI Insight
https://www.readbyqxmd.com/read/28513245/sit-stand-desks-to-reduce-workplace-sitting-time-in-office-workers-with-abdominal-obesity-a-randomized-controlled-trial
#4
Brittany T MacEwen, Travis J Saunders, Dany J MacDonald, Jamie F Burr
BACKGROUND: Sit-stand desks reduce workplace sitting time among healthy office workers; however, their metabolic and behavioural impact in higher risk populations remains unknown. METHODS: Twenty-five office workers with abdominal obesity were randomized to an intervention (sit-stand workstation) or control group (seated desk) for 12 weeks. Physical activity, sedentary behaviour, and cardiometabolic risk factors were assessed before and after the intervention period in both groups...
May 17, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28509612/defining-the-phylogenetic-position-of-amanita-species-from-andean-colombia
#5
Natalia Vargas, Carlos José Pardo-de La Hoz, Giovanna Danies, Ana Esperanza Franco-Molano, Pedro Jiménez, Silvia Restrepo, Alejandro Grajales
Amanita is a worldwide-distributed fungal genus, with approximately 600 known species. Most species within the genus are ectomycorrhizal (ECM), with some saprotrophic representatives. In this study, we constructed the first comprehensive phylogeny including ECM species from Colombia collected in native Quercus humboldtii forests and in introduced Pinus patula plantations. We included 8 species (A. brunneolocularis, A. colombiana, A. flavoconia, A. fuligineodisca, A. muscaria, A. rubescens, A. sororcula, and A...
April 12, 2017: Mycologia
https://www.readbyqxmd.com/read/28507442/aberrant-promoter-methylation-profiles-and-association-with-survival-in-patients-with-hepatocellular-carcinoma
#6
Dani Zhong, Hong Cen
The aim of this study was to investigate the prognostic and diagnostic value of genes with promoter methylation in hepatocellular carcinoma (HCC) patients. On the basis of The Cancer Genome Atlas data, we identified genes with differentially methylated promoters in HCC tissues and adjacent non-tumor tissues, using the linear models for microarray data approach. Cox proportional hazard regression analysis was applied to access the prognostic value of identified differentially methylated genes. The diagnostic value of the genes was evaluated through receiver operating characteristic...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28505108/measurement-of-vibrations-in-two-tower-typed-assistant-personal-robot-implementations-with-and-without-a-passive-suspension-system
#7
Javier Moreno, Eduard Clotet, Marcel Tresanchez, Dani Martínez, Jordi Casanovas, Jordi Palacín
This paper presents the vibration pattern measurement of two tower-typed holonomic mobile robot prototypes: one based on a rigid mechanical structure, and the other including a passive suspension system. Specific to the tower-typed mobile robots is that the vibrations that originate in the lower part of the structure are transmitted and amplified to the higher areas of the tower, causing an unpleasant visual effect and mechanical stress. This paper assesses the use of a suspension system aimed at minimizing the generation and propagation of vibrations in the upper part of the tower-typed holonomic robots...
May 14, 2017: Sensors
https://www.readbyqxmd.com/read/28503020/circadian-rhythm-in-mrna-expression-of-the-glutathione-synthesis-gene-gclc-is-controlled-by-peripheral-glial-clocks-in-drosophila-melanogaster
#8
Eileen S Chow, Dani M Long, Jadwiga M Giebultowicz
Circadian coordination of metabolism, physiology, and behaviour is found in all living kingdoms. Clock genes are transcriptional regulators, and their rhythmic activities generate daily rhythms in clock-controlled genes which result in cellular and organismal rhythms. Insects provide numerous examples of rhythms in behaviour and reproduction, but less is known about control of metabolic processes by circadian clocks in insects. Recent data suggest that several pathways involved in protecting cells from oxidative stress may be modulated by the circadian system, including genes involved in glutathione (GSH) biosynthesis...
December 2016: Physiological Entomology
https://www.readbyqxmd.com/read/28500462/perfusion-index-and-left-ventricular-output-correlation-in-healthy-term-infants
#9
Iuri Corsini, Alessandra Cecchi, Caterina Coviello, Carlo Dani
Perfusion index (PI) is a non-invasive marker of peripheral perfusion which is detected by an oximeter. We aimed to assess the correlation between PI and left ventricular output (LVO) in healthy term infants at the time of the screening for congenital heart disease (CHD). PI was measured at 48 ± 2 h of life in the infant's right hand (PIrh) and in 1 foot (PIf) contemporary to SpO2 for CHD screening. Heart ultrasound was performed immediately after the screening procedure for measuring LVO. Forty-nine healthy term infants were studied...
May 12, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28499708/incidence-of-intermediate-stage-age-related-macular-degeneration-in-patients-with-the-acquired-immunodeficiency-syndrome
#10
Douglas A Jabs, Mark L Van Natta, Jeong Won Pak, Ronald P Danis, Peter W Hunt
PURPOSE: To evaluate the incidence of intermediate-stage age-related macular degeneration (AMD) in patients with the acquired immunodeficiency syndrome (AIDS). DESIGN: Cohort study. METHODS: Patients enrolled in the Longitudinal Study of the Ocular Complications of AIDS (LSOCA) underwent 5- and 10-year follow-up retinal photographs. Intermediate-stage AMD (AREDS stage 3) was determined from these photographs by graders at a centralized Reading Center, using the Age-Related Eye Disease Study-2 grading system...
May 9, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28496013/enhancement-of-bactericidal-effects-of-sodium-hypochlorite-in-chiller-water-with-food-additive-grade-calcium-hydroxide
#11
Chiharu Toyofuku, Md Shahin Alam, Masashi Yamada, Miyuki Komura, Mayuko Suzuki, Hakimullah Hakim, Natthanan Sangsriratanakul, Dany Shoham, Kazuaki Takehara
An alkaline agent, namely food additive grade calcium hydroxide (FdCa(OH)2) in solution at 0.17%, was evaluated for its bactericidal efficacies in chiller water with sodium hypochlorite (NaOCl) at a concentration of 200 ppm total residual chlorine. Without organic material presence, NaOCl could inactivate Salmonella Infantis and Escherichia coli within 5 sec, but in the presence of fetal bovine serum (FBS) at 0.5%, the bactericidal effects of NaOCl were diminished completely. FdCa(OH)2 solution required 3 min to inactivate bacteria with or without 5% FBS...
May 12, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28492364/na-influx-via-orai1-inhibits-intracellular-atp-induced-mtorc2-signaling-to-disrupt-cd4-t-cell-gene-expression-and-differentiation
#12
Yong Miao, Jaya Bhushan, Adish Dani, Monika Vig
T cell effector functions require sustained calcium influx. However, the signaling and phenotypic consequences of non-specific sodium permeation via calcium channels remain unknown. α-SNAP is a crucial component of Orai1 channels, and its depletion disrupts the functional assembly of Orai1 multimers. Here we show that α-SNAP hypomorph, hydrocephalos with hopping gait, Napa(hyh/hyh) mice harbor significant defects in CD4 T cell gene expression and Foxp3 regulatory T cell (Treg) differentiation. Mechanistically, TCR stimulation induced rapid sodium influx in Napa(hyh/hyh) CD4 T cells, which reduced intracellular ATP, [ATP]i...
May 11, 2017: ELife
https://www.readbyqxmd.com/read/28487264/optimizing-protein-intake-and-nitrogen-balance-opinib-in-adult-critically-ill-patients-a-study-protocol-for-a-randomized-controlled-trial
#13
Matteo Danielis, Giulia Lorenzoni, Laura Cavaliere, Mariangela Ruffolo, Luca Peressoni, Amato De Monte, Rodolfo Muzzi, Fabio Beltrame, Dario Gregori
BACKGROUND: Adequate nutrition of critically ill patients plays a key role in the modulation of metabolic response to stress. OBJECTIVE: This paper presents the development of a protocol for a randomized controlled trial (RCT) aimed at comparing clinical outcomes of patients in the intensive care unit (ICU) administered with standard and protein-fortified diet. Together with the RCT study protocol, the results of the observational analysis conducted to assess the feasibility of the RCT are presented...
May 9, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28483864/multiple-extreme-climatic-events-strengthen-selection-for-earlier-breeding-in-a-wild-passerine
#14
Pascal Marrot, Dany Garant, Anne Charmantier
Global climate warming results in an increase in mean temperatures and in the frequency of extreme climatic events (ECEs), which could both strongly impact ecosystems and populations. Most studies assessing the impact of global warming on ecosystems have focused on warming trends while neglecting ECEs. In particular, the effects of multiple ECEs on fitness, and their consequences for selection, are still missing. Here we explored the effects of daily extreme rainfalls, as well as the occurrence of extremely hot and cold days, on clutch size and laying date in a wild blue tit population (Cyanistes caeruleus) monitored over 25 years...
June 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28483819/short-term-and-long-term-outcomes-of-preterm-neonates-with-acute-severe-pulmonary-hypertension-following-rescue-treatment-with-inhaled-nitric-oxide
#15
Michelle Baczynski, Shannon Ginty, Dany E Weisz, Patrick J McNamara, Edmond Kelly, Prakeshkumar Shah, Amish Jain
OBJECTIVE: To describe short-term and long-term outcomes of preterm neonates with severe acute pulmonary hypertension (aPHT) in relation to response to rescue inhaled nitric oxide (iNO) therapy. DESIGN: Retrospective cohort studyover a 6 year period. SETTING: Tertiary neonatal intensive care unit. PATIENTS: 89 neonates <35 weeks gestational age (GA) who received rescue iNO for aPHT, including 62 treated at ≤3 days of age (early aPHT)...
May 8, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28483165/variability-in-outcomes-after-gastroschisis-closure-across-u-s-children-s-hospitals
#16
Dani O Gonzalez, Jennifer N Cooper, Shawn D St Peter, Peter C Minneci, Katherine J Deans
BACKGROUND: In patients undergoing gastroschisis closure, the effects of timing of closure and patient and hospital-level characteristics on length of stay (LOS) and time to enteral autonomy are unknown. STUDY DESIGN: Using the Pediatric Health Information System, we compared neonates who underwent early (within 1day of birth) versus delayed (>1day after birth) gastroschisis closure from 2005 to 2013. We evaluated the relationship between time to closure and both LOS and days on total parenteral nutrition (TPN)...
April 27, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28480618/beyond-chemoreception-diverse-tasks-of-soluble-olfactory-proteins-in-insects
#17
Paolo Pelosi, Immacolata Iovinella, Jiao Zhu, Guirong Wang, Francesca R Dani
Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are regarded as carriers of pheromones and odorants in insect chemoreception. These proteins are typically located in antennae, mouth organs and other chemosensory structures; however, members of both classes of proteins have been detected recently in other parts of the body and various functions have been proposed. The best studied of these non-sensory tasks is performed in pheromone glands, where OBPs and CSPs solubilise hydrophobic semiochemicals and assist their controlled release into the environment...
May 7, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28475400/trends-in-sports-related-concussion-diagnoses-in-the-usa-a-population-based-analysis-using-a-private-payor-database
#18
Kelms Amoo-Achampong, Samuel Rosas, Nicholas Schmoke, Yves-Dany Accilien, Benedict U Nwachukwu, Frank McCormick
OBJECTIVE: To describe recent epidemiological trends in concussion diagnosis within the United States (US) population. METHODS: We conducted a retrospective review of PearlDiver, a private-payor insurance database. Our search included International Classification of Disease, Ninth Revision codes for sports-related concussions spanning 2010 through 2014. Overall study population included patients aged 5 to 39 with subgroup analysis performed on Cohort A (Youth), children and adolescents aged 5 to 19, and Cohort B (Adults), adults aged 20 to 39...
May 17, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28471573/immunity-life-and-dancing-starlings-a-physician-s-perspective
#19
Dani Bercovich, Geoffrey Goodman, M Eric Gershwin
Immune function is the most basic physiological process in humans and indeed throughout the animal kingdom. Interestingly, the vast majority of textbooks of physiology do not include a chapter on immunity. Our species survival is dependent on the diversity of the immune response and the ability for antigen presentation and effector mechanisms to be enormously promiscuous. As physicians, we are likely all too aware of how brief our life span is and the myriad of diseases and events that shorten it. It is not surprising that we question where our life comes from and our relationship within the universe...
August 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28466149/potentially-modifiable-factors-contributing-to-sepsis-associated-encephalopathy
#20
Romain Sonneville, Etienne de Montmollin, Julien Poujade, Maïté Garrouste-Orgeas, Bertrand Souweine, Michael Darmon, Eric Mariotte, Laurent Argaud, François Barbier, Dany Goldgran-Toledano, Guillaume Marcotte, Anne-Sylvie Dumenil, Samir Jamali, Guillaume Lacave, Stéphane Ruckly, Bruno Mourvillier, Jean-François Timsit
PURPOSE: Identifying modifiable factors for sepsis-associated encephalopathy may help improve patient care and outcomes. METHODS: We conducted a retrospective analysis of a prospective multicenter database. Sepsis-associated encephalopathy (SAE) was defined by a score on the Glasgow coma scale (GCS) <15 or when features of delirium were noted. Potentially modifiable risk factors for SAE at ICU admission and its impact on mortality were investigated using multivariate logistic regression analysis and Cox proportional hazard modeling, respectively...
May 2, 2017: Intensive Care Medicine
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