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Event-related potentials

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https://www.readbyqxmd.com/read/29777826/quantifying-fast-optical-signal-and-event-related-potential-relationships-during-a-visual-oddball-task
#1
Nicole Proulx, Ali-Akbar Samadani, Tom Chau
Event-related potentials (ERPs) have previously been used to confirm the existence of the fast optical signal (FOS) but validation methods have mainly been limited to exploring the temporal correspondence of FOS peaks to those of ERPs. The purpose of this study was to systematically quantify the relationship between FOS and ERP responses to a visual oddball task in both time and frequency domains. Near-infrared spectroscopy (NIRS) and electroencephalography (EEG) sensors were co-located over the prefrontal cortex while participants performed a visual oddball task...
May 16, 2018: NeuroImage
https://www.readbyqxmd.com/read/29777710/mir-616-3p-promotes-angiogenesis-and-emt-in-gastric-cancer-via-the-pten-akt-mtor-pathway
#2
Zhen-Hua Wu, Chen Lin, Chen-Chen Liu, Wei-Wei Jiang, Ming-Zhu Huang, Xin Liu, Wei-Jian Guo
Dysregulation of microRNAs has been demonstrated to be involved in a variety of biological events related to cancer, including proliferation, metastasis, angiogenesis and immune escape. miR-616-3p is located on the chromosome region 12q13.3, however, its potential role and clinical implications in gastric cancer remain poorly understood. The current study aimed to investigate the potential role of miR-616-3p in gastric cancer. The results showed that miR-616-3p was up-regulated in cancer tissues. Higher expression of miR-616-3p in tumor tissues also predicted poor prognosis...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777519/combination-glucose-lowering-therapy-plans-in-t2dm-case-based-considerations
#3
REVIEW
Lawrence Blonde, Susana Dipp, Daniel Cadena
Type 2 diabetes mellitus (T2DM) is a complex disease, and while lifestyle interventions remain the cornerstone of therapy, most patients will also require pharmacotherapy. Current diabetes treatment guidelines and algorithms recommend an individualized approach to setting glycemic goals and selecting treatment. Although a single antihyperglycemic agent may be appropriate as the initial T2DM pharmacotherapy, the progressive nature of the disease due to declining pancreatic β-cell function will result in the vast majority of T2DM patients eventually requiring two or more antihyperglycemic agents...
May 18, 2018: Advances in Therapy
https://www.readbyqxmd.com/read/29777099/targeting-g-protein-coupled-receptor-signaling-at-the-g-protein-level-with-a-selective-nanobody-inhibitor
#4
Sahil Gulati, Hui Jin, Ikuo Masuho, Tivadar Orban, Yuan Cai, Els Pardon, Kirill A Martemyanov, Philip D Kiser, Phoebe L Stewart, Christopher P Ford, Jan Steyaert, Krzysztof Palczewski
G protein-coupled receptors (GPCRs) activate heterotrimeric G proteins by mediating a GDP to GTP exchange in the Gα subunit. This leads to dissociation of the heterotrimer into Gα-GTP and Gβγ dimer. The Gα-GTP and Gβγ dimer each regulate a variety of downstream pathways to control various aspects of human physiology. Dysregulated Gβγ-signaling is a central element of various neurological and cancer-related anomalies. However, Gβγ also serves as a negative regulator of Gα that is essential for G protein inactivation, and thus has the potential for numerous side effects when targeted therapeutically...
May 18, 2018: Nature Communications
https://www.readbyqxmd.com/read/29776868/hemorrhagic-cystitis-after-hematopoietic-stem-cell-transplantation-a-challenge-for-the-pediatric-urologist
#5
REVIEW
Romy Gander, Marino Asensio, Gabriela Guillén, Gloria Fatou Royo, Andrea Bolaños, Mercedes Pérez, Cristina Diaz-De-Heredia, Maribel Benitez, Manuel López
OBJECTIVE: Hemorrhagic cystitis (HC) is a serious event that can occur after hematopoietic stem cell transplantation (HSCT). Treatment goals are primarily to preserve life, and then the functionality of the bladder. There is no standard therapeutic approach for HC. Described treatment options provide low success rates and are related to potential life-threatening side effects. The aim of this study was to describe our experience in treatment of HC following HSCT. PATIENTS AND METHODS: This was a retrospective study of patients with HC treated at our institution between January 2010 and October 2016...
April 20, 2018: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29776675/risk-factors-for-near-miss-events-and-safety-incidents-in-pediatric-radiation-therapy
#6
Nimrah Baig, Jiangxia Wang, Shereef Elnahal, Todd McNutt, Jean Wright, Theodore DeWeese, Stephanie Terezakis
BACKGROUND AND PURPOSE: Factors contributing to safety- or quality-related incidents (e.g. variances) in children are unknown. We identified clinical and RT treatment variables associated with risk for variances in a pediatric cohort. MATERIALS AND METHODS: Using our institution's incident learning system, 81 patients age ≤21 years old who experienced variances were compared to 191 pediatric patients without variances. Clinical and RT treatment variables were evaluated as potential predictors for variances using univariate and multivariate analyses...
May 15, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29776592/response-to-metals-treatment-of-fra1-a-member-of-the-ap-1-transcription-factor-family-in-p-lividus-sea-urchin-embryos
#7
Roberta Russo, Rosa Bonaventura, Marco Chiaramonte, Caterina Costa, Valeria Matranga, Francesca Zito
Lithium (Li), Nickel (Ni), and Zinc (Zn) are metals normally present in the seawater, although they can have adverse effects on the marine ecosystem at high concentrations by interfering with many biological processes. These metals are toxic for sea urchin embryos, affecting their morphology and developmental pathways. In particular, they perturb differently the correct organization of the embryonic axes (animal-vegetal, dorso-ventral): Li is a vegetalizing agent and Ni disrupts the dorso-ventral axis, while Zn has an animalizing effect...
May 5, 2018: Marine Environmental Research
https://www.readbyqxmd.com/read/29776168/electrohydrodynamic-coalescence-of-droplets-using-an-embedded-potential-flow-model
#8
M Garzon, L J Gray, J A Sethian
The coalescence, and subsequent satellite formation, of two inviscid droplets is studied numerically. The initial drops are taken to be of equal and different sizes, and simulations have been carried out with and without the presence of an electrical field. The main computational challenge is the tracking of a free surface that changes topology. Coupling level set and boundary integral methods with an embedded potential flow model, we seamlessly compute through these singular events. As a consequence, the various coalescence modes that appear depending upon the relative ratio of the parent droplets can be studied...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29775837/predator-based-psychosocial-stress-model-of-ptsd-differentially-influences-voluntary-ethanol-consumption-depending-on-methodology
#9
Phillip R Zoladz, Eric D Eisenmann, Robert M Rose, Brooke A Kohls, Brandon L Johnson, Kiera L Robinson, Megan E Heikkila, Kasey E Mucher, Madelaine R Huntley
Post-traumatic stress disorder (PTSD) is a debilitating psychological disorder typified by diagnostic symptom clusters including hyperarousal, avoidance, negative cognitions and mood, and intrusive re-experiencing of the traumatic event. Patients with PTSD have been reported to self-medicate with alcohol to ameliorate hyperarousal symptoms associated with the disorder. Research utilizing rodent models of PTSD to emulate this behavioral phenomenon has thus far yielded inconsistent results. In the present study, we examined the effects of a predator-based psychosocial stress model of PTSD on voluntary ethanol consumption...
January 8, 2018: Alcohol
https://www.readbyqxmd.com/read/29775702/abnormal-sleep-architecture-and-hippocampal-circuit-dysfunction-in-a-mouse-model-of-fragile-x-syndrome
#10
Christine E Boone, Heydar Davoudi, Jon B Harrold, David J Foster
Fragile X syndrome (FXS) is the most common heritable cause of intellectual disability and single-gene cause of autism spectrum disorder. The Fmr1 null mouse models much of the human disease including hyperarousal, sensory hypersensitivity, seizure activity, and hippocampus-dependent cognitive impairment. Sleep architecture is disorganized in FXS patients, but has not been examined in Fmr1 knockout (Fmr1-KO) mice. Hippocampal neural activity during sleep, which is implicated in memory processing, also remains uninvestigated in Fmr1-KO mice...
May 15, 2018: Neuroscience
https://www.readbyqxmd.com/read/29775395/after-effect-induced-by-microwave-radiation-in-human-electroencephalographic-signal-a-feasibility-study
#11
Maie Bachmann, Laura Päeske, Andreas A Ioannides, Jaanus Lass, Hiie Hinrikus
PURPOSE: This feasibility study is aimed to clarify the possibility of detection of microwave radiation (MWR) induced event related potential (ERP) in electroencephalographic (EEG) signal. METHODS: To trigger onset and offset effects in EEG, repetitive MWR stimuli were used. Four EEG recordings on a single subject were performed, each about one month apart. The subject was exposed to 450 MHz MWR modulated at 40 Hz at the 1 g peak spatial average specific absorption rate of 0...
May 18, 2018: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/29775300/secondary-organic-aerosol-formation-from-ambient-air-at-an-urban-site-in-beijing-effects-of-oh-exposure-and-precursor-concentrations
#12
Jun Liu, Biwu Chu, Tianzeng Chen, Changgeng Liu, Ling Wang, Xiaolei Bao, Hong He
Secondary organic aerosol (SOA) is an important component of atmospheric fine particles (PM2.5 ), while the key factors controlling SOA formation in ambient air remain poorly understood. In this work, the SOA formation in Beijing urban ambient air was investigated using an oxidation flow reactor (OFR) with high concentrations of OH radicals. The SOA formation potential increased significantly with the increase of ambient PM2.5 concentration during the observation. The optimum ambient exposure time, which is the aging time equivalent to atmospheric oxidation (with similar OH exposure) associated with the peak SOA formation, varied between 2 to 4 days in this study...
May 18, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29774296/integrated-risk-mapping-and-landscape-characterisation-of-lymphatic-filariasis-and-loiasis-in-south-west-nigeria
#13
Tara A Brant, Patricia N Okorie, Olushola Ogunmola, Nureni Bolaji Ojeyode, S B Fatunade, Emmanuel Davies, Yisa Saka, Michelle C Stanton, David H Molyneux, J Russell Stothard, Louise A Kelly-Hope
Nigeria has the heaviest burden of lymphatic filariasis (LF) in sub-Saharan Africa, which is caused by the parasite Wuchereria bancrofti and transmitted by Anopheles mosquitoes. LF is targeted for elimination and the national programme is scaling up mass drug administration (MDA) across the country to interrupt transmission. However, in some regions the co-endemicity of the filarial parasite Loa loa (loiasis) is an impediment due to the risk of severe adverse events (SAEs) associated with the drug ivermectin...
February 2018: Parasite Epidemiology and Control
https://www.readbyqxmd.com/read/29772518/brain-state-before-a-memory-probe-and-associative-retrieval-in-older-adults
#14
Jiangyi Xia, Giulia Galli, Leun J Otten
Older individuals' difficulty in remembering events from a particular time and place may be explained by changes in retrieval-related control processes. We investigated how aging affects neural activity leading up to a retrieval probe and how such activity relates to later performance. Electrical brain activity was recorded while healthy younger and older humans memorized visual word pairs consisting of an object word (e.g., doll) preceded by a location word (e.g., garden). Only object words were presented during the memory test, the task being to decide whether an object had been presented earlier and, if so, what location had been paired with it...
April 12, 2018: Neurobiology of Aging
https://www.readbyqxmd.com/read/29772258/they-all-do-it-will-you-event-related-potential-evidence-of-herding-behavior-in-online-peer-to-peer-lending
#15
Haihong Yu, MengHan Dan, Qingguo Ma, Jia Jin
As herding is a typical characteristic of human behavior, many researchers have found the existence of herding behavior in online peer-to-peer lending through empirical surveys. However, the underlying neural basis of this phenomenon is still unclear. In the current study, we studied the neural activities of herding at decision-making stage and feedback stage using event-related potentials (ERPs). Our results showed that at decision-making stage, larger error related negativity (ERN) amplitude was induced under low-proportion conditions than that of high-proportion conditions...
May 14, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29770964/below-ground-biotic-interactions-moderated-the-postglacial-range-dynamics-of-trees
#16
Jason Pither, Brian J Pickles, Suzanne W Simard, Alejandro Ordonez, John W Williams
Tree range shifts during geohistorical global change events provide a useful real-world model for how future changes in forest biomes may proceed. In North America, during the last deglaciation, the distributions of tree taxa varied significantly as regards the rate and direction of their responses for reasons that remain unclear. Local-scale processes such as establishment, growth, and resilience to environmental stress ultimately influence range dynamics. Despite the fact that interactions between trees and soil biota are known to influence local-scale processes profoundly, evidence linking below-ground interactions to distribution dynamics remains scarce...
May 17, 2018: New Phytologist
https://www.readbyqxmd.com/read/29770217/analysis-of-adverse-events-of-renal-impairment-related-to-platinum-based-compounds-using-the-japanese-adverse-drug-event-report-database
#17
Misa Naganuma, Yumi Motooka, Sayaka Sasaoka, Haruna Hatahira, Shiori Hasegawa, Akiho Fukuda, Satoshi Nakao, Kazuyo Shimada, Koseki Hirade, Takayuki Mori, Tomoaki Yoshimura, Takeshi Kato, Mitsuhiro Nakamura
Objectives: Platinum compounds cause several adverse events, such as nephrotoxicity, gastrointestinal toxicity, myelosuppression, ototoxicity, and neurotoxicity. We evaluated the incidence of renal impairment as adverse events are related to the administration of platinum compounds using the Japanese Adverse Drug Event Report database. Methods: We analyzed adverse events associated with the use of platinum compounds reported from April 2004 to November 2016. The reporting odds ratio at 95% confidence interval was used to detect the signal for each renal impairment incidence...
2018: SAGE Open Medicine
https://www.readbyqxmd.com/read/29769719/klhl22-activates-amino-acid-dependent-mtorc1-signalling-to-promote-tumorigenesis-and-ageing
#18
Jie Chen, Yuhui Ou, Yanyan Yang, Wen Li, Ye Xu, Yuntao Xie, Ying Liu
The mechanistic target of rapamycin complex 1 (mTORC1) is a master regulator of cell growth that responds to a diverse set of environmental cues, including amino acids1,2 . Deregulation of mTORC1 has been linked with metabolic diseases, cancer and ageing2-4 . In response to amino acids, mTORC1 is recruited by the Rag GTPases to the lysosome, its site of activation5,6 . The GATOR1 complex, consisting of DEPDC5, NPRL3 and NPRL2, displays GAP activity to inactivate Rag GTPases under amino-acid-deficient conditions 7 ...
May 16, 2018: Nature
https://www.readbyqxmd.com/read/29769646/long-term-impacts-of-prenatal-synthetic-glucocorticoids-exposure-on-functional-brain-correlates-of-cognitive-monitoring-in-adolescence
#19
Liesa Ilg, Manousos Klados, Nina Alexander, Clemens Kirschbaum, Shu-Chen Li
The fetus is highly responsive to the level of glucocorticoids in the gestational environment. Perturbing glucocorticoids during fetal development could yield long-term consequences. Extending prior research about effects of prenatally exposed synthetic glucocorticoids (sGC) on brain structural development during childhood, we investigated functional brain correlates of cognitive conflict monitoring in term-born adolescents, who were prenatally exposed to sGC. Relative to the comparison group, behavioral response consistency (indexed by lower reaction time variability) and a brain correlate of conflict monitoring (the N2 event-related potential) were reduced in the sGC exposed group...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769442/distinct-biomarker-signatures-in-hiv-acute-infection-associate-with-viral-dynamics-and-reservoir-size
#20
Jeffrey E Teigler, Louise Leyre, Nicolas Chomont, Bonnie Slike, Ningbo Jian, Michael A Eller, Nittaya Phanuphak, Eugène Kroon, Suteeraporn Pinyakorn, Leigh Anne Eller, Merlin L Robb, Jintanat Ananworanich, Nelson L Michael, Hendrik Streeck, Shelly J Krebs
Estimating the size of the viral reservoir is critical for HIV cure strategies. Biomarkers in peripheral circulation may give insights into the establishment of the viral reservoir in compartments not easily accessible. We therefore measured systemic levels of 84 soluble biomarkers belonging to a broad array of immune pathways in acute HIV infection in both antiretroviral therapy-naive (ART-naive) individuals as well as individuals who began ART upon early detection of HIV infection. These biomarkers were measured longitudinally during acute and chronic infection and their relationship to viral reservoir establishment and persistence was assessed...
May 17, 2018: JCI Insight
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