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https://www.readbyqxmd.com/read/29149767/the-effects-of-sleep-on-the-neural-correlates-of-pattern-separation
#1
Christopher R Doxey, Cooper Hodges, Ty Bodily, Nathan M Muncy, C Brock Kirwan
Effective memory representations must be specific to prevent interference between episodes that may overlap in terms of place, time, or items present. Pattern separation, a computational process performed by the hippocampus, overcomes this interference by establishing non-overlapping memory representations. Although it is widely accepted that declarative memories are consolidated during sleep, the effects of sleep on pattern separation have yet to be elucidated. We used whole-brain, high-resolution functional neuroimaging to investigate the effects of sleep on a task that places high demands on pattern separation...
November 17, 2017: Hippocampus
https://www.readbyqxmd.com/read/29149686/preliminary-application-of-structure-from-motion-and-gis-to-document-decomposition-and-taphonomic-processes
#2
Connor D Carlton, Samantha Mitchell, Patrick Lewis
Over the past decade, Structure from Motion (SfM) has increasingly been used as a means of digital preservation and for documenting archaeological excavations, architecture, and cultural material. However, few studies have tapped the potential of using SfM to document and analyze taphonomic processes affecting burials for forensic sciences purposes. This project utilizes SfM models to elucidate specific post-depositional events that affected a series of three human cadavers deposited at the South East Texas Applied Forensic Science Facility (STAFS)...
November 2, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29149233/lighting-up-long-range-charge-transfer-states-by-a-localized-plasmonic-field
#3
Zhen Xie, Sai Duan, Chuan-Kui Wang, Yi Luo
The long-range charge-transfer states in a donor-acceptor system exhibit well separated electron-hole pairs, but are often difficult to achieve by optical means owing to a very small overlap between the wave functions of the donor and acceptor. We have found that the introduction of a spatially confined plasmon can enhance the transition probability to the long-range charge-transfer states as it can effectively break the intrinsic symmetry selection rule imposed on the system. Meanwhile, the intensity borrowed from local excitations could also be selectively promoted, allowing the manipulation of the excited quantum states...
November 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/29149058/neurotrophic-and-neuroregenerative-effects-of-gh-igf1
#4
Vittorio Emanuele Bianchi, Vittorio Locatelli, Laura Rizzi
INTRODUCTION: Human neurodegenerative diseases increase progressively with age and present a high social and economic burden. Growth hormone (GH) and insulin-like growth factor-1 (IGF-1) are both growth factors exerting trophic effects on neuronal regeneration in the central nervous system (CNS) and peripheral nervous system (PNS). GH and IGF-1 stimulate protein synthesis in neurons, glia, oligodendrocytes, and Schwann cells, and favor neuronal survival, inhibiting apoptosis. This study aims to evaluate the effect of GH and IGF-1 on neurons, and their possible therapeutic clinical applications on neuron regeneration in human subjects...
November 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29148959/effect-of-measuring-%C3%AE-glutamyl-transpeptidase-and-using-smoflipid-in-a-parenteral-nutrition-infusion-in-a-patient-with-severe-malabsorption-and-overlapping-primary-sclerosing-cholangitis-and-ulcerative-colitis
#5
Merin Kinikini
Studies discussing inflammation and oxidative stress state that these conditions are known contributors in the pathogenesis of cholestatic diseases and ulcerative colitis, and studies examining patients with liver disease have found decreased antioxidant status and significant elevation of lipid peroxides as compared with healthy subjects. One hypothesis in liver disease is that deficient antioxidant defense mechanisms may lead to excess oxygen free radical formation, which promotes deleterious processes in the liver...
November 1, 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29148728/neutral-luminescent-metal-organic-frameworks-structural-diversification-photophysical-properties-and-sensing-applications
#6
Gouri Chakraborty, Sanjay K Mandal
Utilizing flexible bis(tridentate)polypyridyl ligands, the two new luminescent 2D metal organic frameworks {Zn2(tpbn)(2,6-NDC)2}n (1) and {[Zn2(tphn)(2,6-NDC)2]·4H2O}n (2), where tpbn = N,N',N″,N‴-tetrakis(2-pyridylmethyl)-1,4-diaminobutane, tphn = N,N',N″,N‴-tetrakis(2-pyridylmethyl)-1,6-diaminohexane, and 2,6-H2NDC = 2,6-naphthalenedicarboxylic acid, have been isolated in good yields under solvothermal conditions. Their solid-state molecular structures have been determined by single-crystal X-ray diffractometry...
November 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29148724/photooxidation-of-aniline-derivatives-can-be-activated-by-freezing-their-aqueous-solutions
#7
Pablo Corrochano, Dana Nachtigallová, Petr Klán
A combined experimental and computational approach was used to investigate the spectroscopic properties of three different aniline derivatives (aniline, N,N-dimethylaniline, and N,N-diethylaniline) in aqueous solutions and at the air-ice interface in the temperature range of 243-298 K. The absorption and diffuse reflectance spectra of ice samples prepared by different techniques, such as slow or shock freezing of the aqueous solutions or vapor deposition on ice grains, exhibited unequivocal bathochromic shifts of 10-15 nm of the absorption maxima of anilines in frozen samples compared to those in liquid aqueous solutions...
November 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29148600/new-evidence-for-the-recent-divergence-of-devil-s-hole-pupfish-and-the-plausibility-of-elevated-mutation-rates-in-endangered-taxa
#8
Christopher H Martin, Sebastian Höhna
Saglam et al. (2016) recently argued that the Devil's Hole Pupfish (Cyprinodon diabolis), a conservation icon with the smallest known species range, was isolated 60 kya based on a new genomic dataset. If true, this would be a radically long timescale for any species to persist at population sizes less than 500 individuals, in contrast to conservation genetics theory. However, here we argue that their analyses and interpretation are inappropriate. They placed highly restrictive prior distributions on divergence times, which do not appropriately model the large uncertainty and result in removing nearly all uncertainty from their analyses, and chose among models by assuming that pupfishes exhibit human mutation rates...
November 17, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/29148404/other-autoinflammatory-disease-genes-in-an-fmf-prevalent-population-a-homozygous-mvk-mutation-and-a-novel-heterozygous-tnfrsf1a-mutation-in-two-different-turkish-families-with-clinical-fmf
#9
İlker Karacan, Serdal Uğurlu, Aslıhan Tolun, Eda Tahir Turanlı, Huri Özdoğan
OBJECTIVES: No MEFV mutations are detected in approximately 10% of the patients with clinical FMF in populations where the disease is highly prevalent. Causative mutations were searched in other genes in two such families with "MEFV negative clinical FMF". METHODS: Father and daughter of family A had attacks of fever, abdominal pain and AA amyloidosis. The two sibs of family B complained of febrile episodes with abdominal pain and arthritis. The patients were clinically investigated...
October 27, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29148312/experimental-analysis-of-the-process-parameters-affecting-bone-burring-operations
#10
Jonathan R Kusins, O Remus Tutunea-Fatan, Louis M Ferreira
The experimental quantification of the process parameters associated with bone burring represents a desirable outcome both from the perspective of an optimized surgical procedure as well as that of a future implementation into the design of closed-loop controllers used in robot-assisted bone removal operations. Along these lines, the present study presents an experimental investigation of the effects that tool type, rotational speed of the tool, depth of cut, feed rate, cutting track overlap, and tool angle (to a total of 864 total unique combinations) have on bone temperature, tool vibration, and cutting forces associated with superficial bone removal operations...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29148131/temporal-and-spatial-variability-of-surface-motor-activation-zones-in-hemiplegic-patients-during-functional-electrical-stimulation-therapy-sessions
#11
Jovana Malešević, Matija Štrbac, Milica Isaković, Vladimir Kojić, Ljubica Konstantinović, Aleksandra Vidaković, Suzana Dedijer Dujović, Miloš Kostić, Thierry Keller
The goal of this study was to investigate surface motor activation zones and their temporal variability using an advanced multi-pad functional electrical stimulation system. With this system motor responses are elicited through concurrent activation of electrode matrix pads collectively termed "virtual electrodes" (VEs) with appropriate stimulation parameters. We observed VEs used to produce selective wrist, finger, and thumb extension movements in 20 therapy sessions of 12 hemiplegic stroke patients. The VEs which produce these three selective movements were created manually on the ergonomic multi-pad electrode by experienced clinicians based on visual inspection of the muscle responses...
November 2017: Artificial Organs
https://www.readbyqxmd.com/read/29148086/novel-gene-fusion-of-prcc-mitf-defines-a-new-member-of-mit-family-translocation-renal-cell-carcinoma-clinicopathologic-analysis-and-detection-of-the-gene-fusion-by-rna-sequencing-and-fish
#12
Qiu-Yuan Xia, Xiao-Tong Wang, Sheng-Bing Ye, Xuan Wang, Rui Li, Shan-Shan Shi, Ru Fang, Ru-Song Zhang, Heng-Hui Ma, Zhen-Feng Lu, Qin Shen, Wei Bao, Xiao-Jun Zhou, Qiu Rao
AIMS: MITF, TFE3, TFEB and TFEC belong to the same microphthalmia-associated transcription factor family (MiT). Two transcription factors in this family have been identified in two unusual types of renal cell carcinoma (RCC): Xp11 translocation RCC harboring TFE3 gene fusions and t(6;11) RCC harboring a MALAT1-TFEB gene fusion. The 2016 World Health Organization classification of renal neoplasia grouped these two neoplasms together under the category of MiT family translocation RCC. RCCs associated with the other two MiT family members, MITF and TFEC, have rarely been reported...
November 17, 2017: Histopathology
https://www.readbyqxmd.com/read/29148080/genetic-risk-factors-for-perception-of-symptoms-in-gerd-an-observational-cohort-study
#13
A Patel, S Hasak, B D Nix, G S Sayuk, R D Newberry, C P Gyawali
BACKGROUND: Genetic polymorphisms in G-protein beta-3 subunit (GNβ3) and beta-2 adrenergic receptor (ADRB2) are associated with pain and gut hypersensitivity, which can overlap with gastroesophageal reflux disease (GERD). AIM: To evaluate relationships between single nucleotide polymorphisms (SNPs) within GNβ3 and ADRB2 systems, and reflux symptom burden, GERD phenotypes from ambulatory reflux monitoring, and quality of life. METHODS: Symptomatic adults undergoing ambulatory reflux testing were recruited and phenotyped based on acid burden and symptom reflux association; major oesophageal motor disorders and prior foregut surgery were exclusions...
November 17, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29147551/development-of-proteolytically-stable-n-methylated-peptide-inhibitors-of-aggregation-of-the-amylin-peptide-implicated-in-type-2-diabetes
#14
Idira Obasse, Mark Taylor, Nigel J Fullwood, David Allsop
Islet amyloid polypeptide, also known as amylin, is the main component of the amyloid deposits present in approximately 90% of people with type 2 diabetes mellitus (T2DM). In this disease, amylin aggregates into multimeric β-pleated sheet structures which cause damage to pancreatic islet β-cells. Inhibitors of early-stage amylin aggregation could therefore provide a disease-modifying treatment for T2DM. In this study, overlapping peptides were designed to target the 'binding' region (RLANFLVHSS, residues 11-20) of human amylin, and their effects on amyloid fibril formation were determined by thioflavin-T assay...
December 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/29147006/the-influence-of-skin-colour-on-the-experience-of-ownership-in-the-rubber-hand-illusion
#15
Marilia Lira, Julia H Egito, Patricia A Dall'Agnol, David M Amodio, Óscar F Gonçalves, Paulo S Boggio
Racial prejudice is associated with a fundamental distinction between "us" and "them"-a distinction linked to the perceived overlap between representations of the self and others. Implicit prejudice has been shown to reduce the intensity of White individuals' hand ownership sensation as induced by the Rubber Hand Illusion (RHI) with dark rubber hands. However, evidence for this link to implicit prejudice comes from self-report questionnaire data regarding the RHI. As an alternative, we assessed the onset time of the RHI...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146922/molecular-definition-of-multiple-sites-of-antibody-inhibition-of-malaria-transmission-blocking-vaccine-antigen-pfs25
#16
Stephen W Scally, Brandon McLeod, Alexandre Bosch, Kazutoyo Miura, Qi Liang, Sean Carroll, Sini Reponen, Ngan Nguyen, Eldar Giladi, Sebastian Rämisch, Vidadi Yusibov, Allan Bradley, Franck Lemiale, William R Schief, Daniel Emerling, Paul Kellam, C Richter King, Jean-Philippe Julien
The Plasmodium falciparum Pfs25 protein (Pfs25) is a leading malaria transmission-blocking vaccine antigen. Pfs25 vaccination is intended to elicit antibodies that inhibit parasite development when ingested by Anopheles mosquitoes during blood meals. The Pfs25 three-dimensional structure has remained elusive, hampering a molecular understanding of its function and limiting immunogen design. We report six crystal structures of Pfs25 in complex with antibodies elicited by immunization via Pfs25 virus-like particles in human immunoglobulin loci transgenic mice...
November 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29146728/source-estimation-of-epileptic-activity-using-eloreta-kurtosis-analysis
#17
Shunichiro Ikeda, Ryouhei Ishii, Leonides Canuet, Roberto D Pascual-Marqui
Exact low-resolution brain electromagnetic tomography (eLORETA) is a technique for three-dimensional representation of the distribution of sources of electrical activity in the brain. Kurtosis analysis allows for identification of spiky activity in the brain. To evaluate the reliability of eLORETA kurtosis analysis, the results of the analysis were compared with those of equivalent current dipole (ECD) and synthetic aperture magnetometry (SAM) kurtosis analysis of magnetoencephalography (MEG) data in a patient with epilepsy with elementary visual seizures in a 6-year follow-up...
November 16, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29146704/prospective-evaluation-of-kidney-disease-in-joubert-syndrome
#18
Leah R Fleming, Daniel A Doherty, Melissa A Parisi, Ian A Glass, Joy Bryant, Roxanne Fischer, Baris Turkbey, Peter Choyke, Kailash Daryanani, Meghana Vemulapalli, James C Mullikin, May Christine Malicdan, Thierry Vilboux, John A Sayer, William A Gahl, Meral Gunay-Aygun
BACKGROUND AND OBJECTIVES: Joubert syndrome is a genetically heterogeneous ciliopathy associated with >30 genes. The characteristics of kidney disease and genotype-phenotype correlations have not been evaluated in a large cohort at a single center. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We evaluated 97 individuals with Joubert syndrome at the National Institutes of Health Clinical Center using abdominal ultrasonography, blood and urine chemistries, and DNA sequencing...
November 16, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29146678/cross-organ-sensitisation-between-the-colon-and-bladder-to-pee-or-not-to-pee
#19
Luke Grundy, Stuart M Brierley
Chronic abdominal and pelvic pain are common, debilitating clinical conditions experienced by millions of patients around the globe. The origin of such pain commonly arises from the intestine and bladder, which share common primary roles; the collection, storage and expulsion of waste. These visceral organs are located in close proximity to one another, and also share common innervation from spinal afferent pathways. Chronic abdominal pain, constipation or diarrhoea are primary symptoms for patients with Irritable Bowel Syndrome (IBS) or Inflammatory Bowel Disease (IBD)...
November 16, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29146602/donor-specific-and-nonspecific-hla-antibodies-and-outcome-post-lung-transplantation
#20
Stijn E Verleden, Bart M Vanaudenaerde, Marie-Paul Emonds, Dirk E Van Raemdonck, Arne P Neyrinck, Geert M Verleden, Robin Vos
Donor-specific antibodies (DSAs) against human leukocyte antigen (HLA) are associated with chronic lung allograft dysfunction (CLAD) and mortality post lung transplantation, but data concerning prevalence, time of onset, persistence and effects on long-term outcome remain scarce.We assessed the association between HLA antibodies and CLAD-free and graft survival in a cohort of 362 patients. We stratified our analysis according to DSA status, persistence of antibodies and timing of antibodies (pre-transplant, early or late post-transplant)...
November 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
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