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https://www.readbyqxmd.com/read/29353412/helicobacter-pylori-lps-induced-gastric-mucosal-spleen-tyrosine-kinase-syk-recruitment-to-tlr4-and-activation-occurs-with-the-involvement-of-protein-kinase-c%C3%AE
#1
B L Slomiany, A Slomiany
Spleen tyrosine kinase (Syk) has emerged recently as a major effector of proinflammatory genes expression induced by LPS-elicited TLR4 activation, and manifested by the up-amplification in the production of inflammatory mediators, including PGE2 and NO. Here, we investigated the nature of factors involved in the recruitment and interaction of Syk with TLR4 in gastric mucosa in response to H. pylori LPS. We show that stimulation of gastric mucosal cells with the LPS leads to localization of Syk with the membrane-associated TLR4 complex and its activation through phosphorylation on Tyr...
January 20, 2018: Inflammopharmacology
https://www.readbyqxmd.com/read/29353242/sickle-cell-crisis-a-crisis-of-a-different-sort
#2
Gurinder Kumar, Ayesha Ateeq Al Muwaijei, Aman Preet Singh Sohal
: A 9-year-old boy with sickle cell disease (SCD) was presented to the emergency department with acute headache and swelling over his bilateral temporoparietal region. There was no history of antecedent trauma, fever, vomiting or other features of an intercurrent illness. On arrival, his blood pressure was 112/62 mm Hg, heart rate was 98/min and his Glasgow Coma Scale score was 15/15. There was evidence of significant scalp tenderness over the bilateral temporoparietal region. A complete neurological examination including direct and consensual pupillary response was unremarkable...
January 20, 2018: Archives of Disease in Childhood. Education and Practice Edition
https://www.readbyqxmd.com/read/29353219/blocking-mitochondrial-cyclophilin-d-ameliorates-tsh-impaired-defensive-barrier-of-artery
#3
Xiaojing Liu, Heng Du, Qiang Chai, Qing Jia, Lu Liu, Meng Zhao, Jun Li, Hui Tang, Wenbin Chen, Lifang Zhao, Li Fang, Ling Gao, Jiajun Zhao
AIMS: Endothelial cells (ECs) constitute the defensive barrier of vasculature, which maintains the vascular homeostasis. Mitochondrial oxidative stress (mitoOS) in ECs significantly affects the initiation and progression of vascular diseases. The higher serum thyroid stimulating hormone (TSH) level is being recognized as a nonconventional risk factor responsible for the increased risk of cardiovascular diseases in subclinical hypothyroidism (SCH). However, effects and underlying mechanisms of elevated TSH on ECs are still ambiguous...
January 9, 2018: Redox Biology
https://www.readbyqxmd.com/read/29352704/treatment-of-adult-chronic-indeterminate-chagas-disease-with-benznidazole-and-three-e1224-dosing-regimens-a-proof-of-concept-randomised-placebo-controlled-trial
#4
Faustino Torrico, Joaquim Gascon, Lourdes Ortiz, Cristina Alonso-Vega, María-Jesús Pinazo, Alejandro Schijman, Igor C Almeida, Fabiana Alves, Nathalie Strub-Wourgaft, Isabela Ribeiro
BACKGROUND: Chagas disease is a major neglected vector-borne disease. In this study, we investigated the safety and efficacy of three oral E1224 (a water-soluble ravuconazole prodrug) regimens and benznidazole versus placebo in adult chronic indeterminate Chagas disease. METHOD: In this proof-of-concept, double-blind, randomised phase 2 clinical trial, we recruited adults (18-50 years) with confirmed diagnosis of Trypanosoma cruzi infection from two outpatient units in Bolivia...
January 15, 2018: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29352677/surface-structure-and-tribology-of-legless-squamate-reptiles
#5
REVIEW
Hisham A Abdel-Aal
Squamate reptiles (around 10,000 species of snakes and lizards) comprise a myriad of distinct terrestrial vertebrates. The diversity within this biological group offers a great opportunity for customized bio-inspired solutions that address a variety of current technological problems especially within the realm of surface engineering and tribology. One subgroup within squamata is of interest in that context, namely the legless reptiles (mainly snakes and few lizards). The promise of that group lies within their functional adaptation as manifested in optimized surface designs and locomotion that is distinguished by economy of effort even when functioning within hostile tribological environments...
November 8, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29352616/assessing-advanced-airway-management-performance-in-a-national-cohort-of-emergency-medical-services-agencies
#6
Henry E Wang, John P Donnelly, Dustin Barton, Jeffrey L Jarvis
STUDY OBJECTIVE: Although often the focus of quality improvement efforts, emergency medical services (EMS) advanced airway management performance has few national comparisons, nor are there many assessments with benchmarks accounting for differences in agency volume or patient mix. We seek to assess variations in advanced airway management and conventional intubation performance in a national cohort of EMS agencies. METHODS: We used EMS data from ESO Solutions, a national EMS electronic health record system...
January 15, 2018: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/29352540/insight-in-schizophrenia-spectrum-disorders-relationship-with-behavior-mood-and-perceived-quality-of-life-underlying-causes-and-emerging-treatments
#7
Paul H Lysaker, Michelle L Pattison, Bethany L Leonhardt, Scott Phelps, Jenifer L Vohs
Poor insight in schizophrenia is prevalent across cultures and phases of illness. In this review, we examine the recent research on the relationship of insight with behavior, mood and perceived quality of life, on its complex roots, and on the effects of existing and emerging treatments. This research indicates that poor insight predicts poorer treatment adherence and therapeutic alliance, higher symptom severity and more impaired community function, while good insight predicts a higher frequency of depression and demoralization, especially when coupled with stigma and social disadvantage...
February 2018: World Psychiatry: Official Journal of the World Psychiatric Association (WPA)
https://www.readbyqxmd.com/read/29352287/ifn%C3%AE-inhibits-g-csf-induced-neutrophil-expansion-and-invasion-of-the-cns-to-prevent-viral-encephalitis
#8
Chandran Ramakrishna, Edouard M Cantin
Emergency hematopoiesis facilitates the rapid expansion of inflammatory immune cells in response to infections by pathogens, a process that must be carefully regulated to prevent potentially life threatening inflammatory responses. Here, we describe a novel regulatory role for the cytokine IFNγ that is critical for preventing fatal encephalitis after viral infection. HSV1 encephalitis (HSE) is triggered by the invasion of the brainstem by inflammatory monocytes and neutrophils. In mice lacking IFNγ (GKO), we observed unrestrained increases in G-CSF levels but not in GM-CSF or IL-17...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29351857/psychometric-properties-of-outcome-measures-evaluating-decline-in-gait-in-cerebellar-ataxia-a-systematic-review
#9
REVIEW
Sarah C Milne, Anna Murphy, Nellie Georgiou-Karistianis, Eppie M Yiu, Martin B Delatycki, Louise A Corben
Cerebellar ataxia often results in impairment in ambulation secondary to gait pattern dysfunction and compensatory gait adjustments. Pharmaceutical and therapy-based interventions with potential benefit for gait in ataxia are starting to emerge, however evaluation of such interventions is hampered by the lack of outcome measures that are responsive, valid and reliable for measurement of gait decline in cerebellar ataxia. This systematic review aimed for the first time to evaluate the psychometric properties of gait and walking outcomes applicable to individuals with cerebellar ataxia...
January 4, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29351730/population-structure-of-venturia-inaequalis-a-causal-agent-of-apple-scab-in-response-to-heterogeneous-apple-tree-cultivation
#10
Monika Michalecka, Sylwester Masny, Thibault Leroy, Joanna Puławska
BACKGROUND: Tracking newly emergent virulent populations in agroecosystems provides an opportunity to increase our understanding of the co-evolution dynamics of pathogens and their hosts. On the one hand host plants exert selective pressure on pathogen populations, thus dividing them into subpopulations of different virulence, while on the other hand they create an opportunity for secondary contact between the two divergent populations on one tree. The main objectives of the study were to explore whether the previously reported structure between two Venturia inaequalis population types, virulent or avirulent towards Malus x domestica cultivars carrying Rvi6 gene, is maintained or broken several years after the first emergence of new virulent strains in Poland, and to investigate the relationship between 'new' and 'native' populations derived from the same commercial orchards...
January 19, 2018: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29351660/behavior-change-is-not-one-size-fits-all-psychosocial-phenotypes-of-childhood-obesity-prevention-intervention-participants
#11
Marissa Burgermaster, Isobel Contento, Pamela Koch, Lena Mamykina
Variability in individuals' responses to interventions may contribute to small average treatment effects of childhood obesity prevention interventions. But, neither the causes of this individual variability nor the mechanism by which it influences behavior are clear. We used qualitative methods to characterize variability in students' responses to participating in a childhood obesity prevention intervention and psychosocial characteristics related to the behavior change process. We interviewed 18 students participating in a school-based curriculum and policy behavior change intervention...
January 17, 2018: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/29351549/weeds-and-ground-dwelling-predators-response-to-two-different-weed-management-systems-in-glyphosate-tolerant-cotton-a-farm-scale-study
#12
Esteban García-Ruiz, Íñigo Loureiro, Gema P Farinós, Pablo Gómez, Elena Gutiérrez, Francisco Javier Sánchez, María Concepción Escorial, Félix Ortego, María Cristina Chueca, Pedro Castañera
The use of glyphosate, as a post-emergence broad-spectrum herbicide in genetically modified glyphosate-tolerant (GT) cotton, supposes a big change in weed management programs with respect to a conventional regime. Thus, alterations in arable flora and arthropod fauna must be considered when evaluating their potential impacts. A 3-year farm-scale study was conducted in a 2-ha GT cotton crop, in southern Spain, to compare the effects of conventional and glyphosate herbicide regimes on weed abundance and diversity and their consequences for ground-dwelling predators...
2018: PloS One
https://www.readbyqxmd.com/read/29351515/understanding-key-mechanisms-of-exercise-induced-cardiac-protection-to-mitigate-disease-current-knowledge-and-emerging-concepts
#13
Bianca C Bernardo, Jenny Y Y Ooi, Kate L Weeks, Natalie L Patterson, Julie R McMullen
The benefits of exercise on the heart are well recognized, and clinical studies have demonstrated that exercise is an intervention that can improve cardiac function in heart failure patients. This has led to significant research into understanding the key mechanisms responsible for exercise-induced cardiac protection. Here, we summarize molecular mechanisms that regulate exercise-induced cardiac myocyte growth and proliferation. We discuss in detail the effects of exercise on other cardiac cells, organelles, and systems that have received less or little attention and require further investigation...
January 1, 2018: Physiological Reviews
https://www.readbyqxmd.com/read/29351465/emerging-potential-benefits-of-modulating-nad-metabolism-in-cardiovascular-disease
#14
Daniel S Matasic, Charles Brenner, Barry London
Nicotinamide adenine dinucleotide (NAD+) and related metabolites are central mediators of fuel oxidation and bioenergetics within cardiomyocytes. Additionally, NAD+ is required for the activity of multifunctional enzymes including sirtuins and poly(ADP-ribose) polymerases (PARPs) that regulate post-translational modifications, DNA damage responses, and calcium signaling. Recent research indicates that NAD+ participates in a multitude of processes dysregulated in cardiovascular diseases. Therefore, supplementation of NAD+ precursors including nicotinamide riboside (NR) that boost or replete the NAD+ metabolome may be cardioprotective...
December 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29351319/speech-stone-tool-making-and-the-evolution-of-language
#15
Dana Michelle Cataldo, Andrea Bamberg Migliano, Lucio Vinicius
The 'technological hypothesis' proposes that gestural language evolved in early hominins to enable the cultural transmission of stone tool-making skills, with speech appearing later in response to the complex lithic industries of more recent hominins. However, no flintknapping study has assessed the efficiency of speech alone (unassisted by gesture) as a tool-making transmission aid. Here we show that subjects instructed by speech alone underperform in stone tool-making experiments in comparison to subjects instructed through either gesture alone or 'full language' (gesture plus speech), and also report lower satisfaction with their received instruction...
2018: PloS One
https://www.readbyqxmd.com/read/29351172/a-systematic-review-and-meta-analysis-of-genetic-risk-factors-for-neuropathic-pain
#16
Abirami Veluchamy, Harry L Hébert, Weihua Meng, Colin N A Palmer, Blair H Smith
Neuropathic pain (NP) is an increasingly common chronic pain state and a major health burden, affecting approximately 7-10% of the general population. Emerging evidence suggests that genetic factors could partially explain individual susceptibility to NP and the estimated heritability in twins is 37%. The aim of this study was to systematically review and summarize the studies in humans that have investigated the influence of genetic factors associated with NP. We conducted a comprehensive literature search and performed meta-analyses of all the potential genetic variants associated with NP...
January 18, 2018: Pain
https://www.readbyqxmd.com/read/29351141/an-exploration-of-emergency-physicians-attitudes-toward-patients-with-substance-use-disorder
#17
Cecelia Kathleen Mendiola, Giorgio Galetto, Michael Fingerhood
OBJECTIVES: Much is known about some healthcare professionals' attitudes toward patients with substance use disorders, but few studies have specifically looked at emergency department (ED) physicians. Individuals with substance use disorders are more likely to be people who chronically, frequently use the ED, and thus ED physicians are in a unique position to provide early identification and intervention for people struggling with addiction. The purpose of this study was to understand ED physicians' attitudes toward patients with substance use disorder with the aim of decreasing stigma and improving the care of ED patients with substance use disorder...
January 18, 2018: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/29351057/global-gene-expression-response-in-mouse-models-of-dna-repair-deficiency-after-gamma-irradiation
#18
Nils Rudqvist, Evagelia C Laiakis, Shanaz A Ghandhi, Suresh Kumar, Jeffrey D Knotts, Mashkura Chowdhury, Albert J Fornace, Sally A Amundson
In the event of an improvised nuclear device or "dirty bomb" in a highly populated area, potentially hundreds of thousands of people will require screening to ensure that exposed individuals receive appropriate treatment. For this reason, there is a need to develop tools for high-throughput radiation biodosimetry. Gene expression represents an emerging approach to biodosimetry and could potentially provide an estimate of both absorbed dose and individual radiation-induced injury. Since approximately 2-4% of humans are thought to be radiosensitive, and would suffer greater radiological injury at a given dose than members of the general population, it is of interest to explore the potential impact of such sensitivity on the biodosimetric gene expression signatures being developed...
January 19, 2018: Radiation Research
https://www.readbyqxmd.com/read/29351020/a-dynamic-state-model-of-migratory-behavior-and-physiology-to-assess-the-consequences-of-environmental-variation-and-anthropogenic-disturbance-on-marine-vertebrates
#19
Enrico Pirotta, Marc Mangel, Daniel P Costa, Bruce Mate, Jeremy A Goldbogen, Daniel M Palacios, Luis A Hückstädt, Elizabeth A McHuron, Lisa Schwarz, Leslie New
Integrating behavior and physiology is critical to formulating new hypotheses on the evolution of animal life-history strategies. Migratory capital breeders acquire most of the energy they need to sustain migration, gestation, and lactation before parturition. Therefore, when predicting the impact of environmental variation on such species, a mechanistic understanding of the physiology of their migratory behavior is required. Using baleen whales as a model system, we developed a dynamic state variable model that captures the interplay among behavioral decisions, energy, reproductive needs, and the environment...
February 2018: American Naturalist
https://www.readbyqxmd.com/read/29350939/mirror-anomaly-in-dirac-semimetals
#20
A A Burkov
We demonstrate that, apart from the chiral anomaly, Dirac semimetals possess another quantum anomaly, which we call the mirror anomaly and which manifests in a singular response of the Dirac semimetal to an applied magnetic field. Namely, the anomalous Hall conductivity exhibits step-function singularities when the field is rotated. We show that this phenomenon is closely analogous to the parity anomaly of (2+1)-dimensional Dirac fermions, but with mirror symmetry, which we demonstrate emerges near any Dirac point at a time reversal invariant momentum, replacing the parity symmetry...
January 5, 2018: Physical Review Letters
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