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https://www.readbyqxmd.com/read/27906497/neuroembryology
#1
REVIEW
Diana Darnell, Scott F Gilbert
How is it that some cells become neurons? And how is it that neurons become organized in the spinal cord and brain to allow us to walk and talk, to see, recall events in our lives, feel pain, keep our balance, and think? The cells that are specified to form the brain and spinal cord are originally located on the outside surface of the embryo. They loop inward to form the neural tube in a process called neurulation. Structures that are nearby send signals to the posterior neural tube to form and pattern the spinal cord so that the dorsal side receives sensory input and the ventral side sends motor signals from neurons to muscles...
December 1, 2016: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/27906119/degrading-traumatic-memories-with-eye-movements-a-pilot-functional-mri-study-in-ptsd
#2
Kathleen Thomaes, Iris M Engelhard, Marit Sijbrandij, Danielle C Cath, Odile A Van den Heuvel
BACKGROUND: Eye movement desensitization and reprocessing (EMDR) is an effective treatment for posttraumatic stress disorder (PTSD). During EMDR, the patient recalls traumatic memories while making eye movements (EMs). Making EMs during recall is associated with decreased vividness and emotionality of traumatic memories, but the underlying mechanism has been unclear. Recent studies support a "working-memory" (WM) theory, which states that the two tasks (recall and EMs) compete for limited capacity of WM resources...
2016: European Journal of Psychotraumatology
https://www.readbyqxmd.com/read/27905964/what-is-the-optimal-recall-period-for-verbal-autopsies-validation-study-based-on-repeat-interviews-in-three-populations
#3
Peter Serina, Ian Riley, Bernardo Hernandez, Abraham D Flaxman, Devarsetty Praveen, Veronica Tallo, Rohina Joshi, Diozele Sanvictores, Andrea Stewart, Meghan D Mooney, Christopher J L Murray, Alan D Lopez
BACKGROUND: One key contextual feature in Verbal Autopsy (VA) is the time between death and survey administration, or recall period. This study quantified the effect of recall period on VA performance by using a paired dataset in which two VAs were administered for a single decedent. METHODS: This study used information from the Population Health Metrics Research Consortium (PHMRC) Study, which collected VAs for "gold standard" cases where cause of death (COD) was supported by clinical criteria...
October 18, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905357/-screening-of-cognitive-impairment-in-the-old-and-old-old-population-with-the-3-ct-scale
#4
D A Gutorova, E E Vasenina, O S Levin
AIM: To determine sensitivity and specificity of the 3-CT scale, a combination of 3 simple and minimum cost tests, for screening purposes in old and old-old patients in comparison to the Montreal Cognitive Assessment (MoCA) and Mini-Mental State Examination (MMSE). MATERIAL AND METHODS: The study included 106 patients. Assessment of sensitivity and specificity of neuropsychological testing with ROC-curves was used. RESULTS: MoCA showed moderate sensitivity (0...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27903707/formation-of-long-term-locomotor-memories-is-associated-with-functional-connectivity-changes-in-the-cerebellar-thalamic-cortical-network
#5
Firas Mawase, Simona Bar-Haim, Lior Shmuelof
: Although motor adaptation is typically rapid, accumulating evidence shows that it is also associated with long-lasting behavioural and neuronal changes. Two processes were suggested to explain the formation of long-term motor memories: recall -- reflecting a retrieval of previous motor actions, and faster relearning -- reflecting an increased sensitivity to errors. While these manifestations of motor memories were initially demonstrated in the context of adaptation experiments in reaching, indications of long-term motor memories were also recently demonstrated in other kinds of adaptation, such as in locomotor adaptation...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27903704/semantic-congruence-accelerates-the-onset-of-the-neural-signals-of-successful-memory-encoding
#6
P A Packard, A Rodríguez-Fornells, N Bunzeck, B Nicolás, R de Diego-Balaguer, L Fuentemilla
: As the stream of experience unfolds, our memory system rapidly transforms current inputs into long-lasting meaningful memories. A putative neural mechanism that strongly influences how input elements are transformed into meaningful memory codes relies on the ability to integrate them with existing structures of knowledge or schemas. However, it is not yet clear whether schema-related integration neural mechanisms occur during online encoding. In the current investigation, we examined the encoding-dependent nature of this phenomenon in humans...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27903517/branched-chain-fatty-acid-composition-of-human-milk-and-the-impact-of-maternal-diet-the-global-exploration-of-human-milk-gehm-study
#7
Kelly A Dingess, Christina J Valentine, Nicholas J Ollberding, Barbara S Davidson, Jessica G Woo, Suzanne Summer, Yongmei M Peng, M Lourdes Guerrero, Guillermo M Ruiz-Palacios, Rinat R Ran-Ressler, Robert J McMahon, J Thomas Brenna, Ardythe L Morrow
BACKGROUND: An understudied component of the diet, branched-chain fatty acids (BCFAs) are distinctive saturated fatty acids that may have an important influence on health. Human-milk fatty acid composition is known to differ worldwide, but comparative data are lacking on BCFAs. OBJECTIVE: We tested the hypotheses that concentrations of BCFAs in human milk differ between populations and are associated with maternal diet. DESIGN: We surveyed the BCFA composition of samples collected as part of a standardized, prospective study of human-milk composition...
November 30, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27903333/diffusion-tensor-imaging-predictors-of-episodic-memory-decline-in-healthy-elders-at-genetic-risk-for-alzheimer-s-disease
#8
Melissa A Lancaster, Michael Seidenberg, J Carson Smith, Kristy A Nielson, John L Woodard, Sally Durgerian, Stephen M Rao
OBJECTIVES: White matter (WM) integrity within the mesial temporal lobe (MTL) is important for episodic memory (EM) functioning. The current study investigated the ability of diffusion tensor imaging (DTI) in MTL WM tracts to predict 3-year changes in EM performance in healthy elders at disproportionately higher genetic risk for Alzheimer's disease (AD). METHODS: Fifty-one cognitively intact elders (52% with family history (FH) of dementia and 33% possessing an Apolipoprotein E ε4 allelle) were administered the Rey Auditory Verbal Learning Test (RAVLT) at study entry and at 3-year follow-up...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27903329/prediction-of-free-and-cued-selective-reminding-test-performance-using-volumetric-and-amyloid-based-biomarkers-of-alzheimer-s-disease
#9
Lisa Quenon, Laurence Dricot, John L Woodard, Bernard Hanseeuw, Nathalie Gilis, Renaud Lhommel, Adrian Ivanoiu
OBJECTIVES: Relatively few studies have investigated relationships between performance on clinical memory measures and indexes of underlying neuropathology related to Alzheimer's disease (AD). This study investigated predictive relationships between Free and Cued Selective Reminding Test (FCSRT) cue efficiency (CE) and free-recall (FR) measures and brain amyloid levels, hippocampal volume (HV), and regional cortical thickness. METHODS: Thirty-one older controls without memory complaints and 60 patients presenting memory complaints underwent the FCSRT, amyloid imaging using [F18]-flutemetamol positron emission tomography, and surface-based morphometry (SBM) using brain magnetic resonance imaging...
November 2016: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/27903053/a-comparison-of-temporal-and-location-based-sampling-strategies-for-global-positioning-system-triggered-electronic-diaries
#10
Tobias Törnros, Helen Dorn, Markus Reichert, Ulrich Ebner-Priemer, Hans-Joachim Salize, Heike Tost, Andreas Meyer-Lindenberg, Alexander Zipf
Self-reporting is a well-established approach within the medical and psychological sciences. In order to avoid recall bias, i.e. past events being remembered inaccurately, the reports can be filled out on a smartphone in real-time and in the natural environment. This is often referred to as ambulatory assessment and the reports are usually triggered at regular time intervals. With this sampling scheme, however, rare events (e.g. a visit to a park or recreation area) are likely to be missed. When addressing the correlation between mood and the environment, it may therefore be beneficial to include participant locations within the ambulatory assessment sampling scheme...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27902919/geographic-distribution-of-point-in-time-access-to-subsidised-dental-services-in-western-australia
#11
Yevgeni Dudko, Estie Kruger, Marc Tennant
Dental Health Services (DHS) is the largest public primary oral healthcare provider in WA. The objective of this study was to calculate probable distance patients are expected to travel to the nearest clinic, gauge utilisation rates and predict the direction of likely changes in future demand for subsidised dental care. Eligible population data was collected from the Department of Human Services and the Australian Bureau of Statistics websites and integrated with the waiting list and the recall list data provided by the DHS...
December 1, 2016: Australian Journal of Primary Health
https://www.readbyqxmd.com/read/27902884/synthesis-and-biological-evaluation-of-new-triazolo-and-imidazolopyridine-ror%C3%AE-t-inverse-agonists
#12
Samuel Hintermann, Christine Guntermann, Henri Mattes, David A Carcache, Juergen Wagner, Anna Vulpetti, Andreas Billich, Janet Dawson, Klemens Kaupmann, Joerg Kallen, Rowan Stringer, David Orain
Retinoic-acid-related orphan receptor γt (RORγt) is a key transcription factor implicated in the production of pro-inflammatory Th17 cytokines, which drive a number of autoimmune diseases. Despite diverse chemical series having been reported, combining high potency with a good physicochemical profile has been a very challenging task in the RORγt inhibitor field. Based on available chemical structures and incorporating in-house knowledge, a new series of triazolo- and imidazopyridine RORγt inverse agonists was designed...
November 30, 2016: ChemMedChem
https://www.readbyqxmd.com/read/27902386/establishment-of-memory-cd8-t-cells-with-live-attenuated-influenza-virus-laiv-across-different-vaccination-doses
#13
Zhongfang Wang, Lukasz Kedzierska, Simone Nuessing, Brendon Chua, Sergio M Quiñones-Parra, Victor C Huber, David Jackson, Paul G Thomas, Katherine Kedzierska
FluMist has been used in children and adults for more than ten years. As pre-existing CD8+ T-cell memory pools can provide heterologous immunity against distinct influenza viruses, it is important to understand influenza-specific CD8+ T-cell responses elicited by different LAIV regimens. In this study, we immunized mice intranasally (i.n.) with two different doses of live-attenuated PR8 virus (PR8 ts, H1N1), low and high, and then assessed protective efficacy by challenging animals with heterosubtypic X31-H3N2 virus at 6 weeks post-vaccination...
November 2, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27901029/synchronic-inverse-seasonal-rhythmus-of-energy-density-of-food-intake-and-sleep-quality-a-contribution-to-chrono-nutrition-from-a-polish-adult-population
#14
M Stelmach-Mardas, K Iqbal, M Mardas, L Schwingshackl, J Walkowiak, R J Tower, H Boeing
BACKGROUND/OBJECTIVES: There is evidence which suggests that sleep behavior and dietary intake are interlinked. Thus, we investigated whether a seasonal rhythm in food-energy density exists, and how this relates to quality of sleep. SUBJECTS/METHODS: Two hundred and thirty adult volunteers were investigated across the four seasons. Anthropometrical measurements were obtained and The Pittsburgh Sleep Quality Index was used for an assessment of sleep quality and disturbances...
November 30, 2016: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27900309/from-loose-body-to-osteochondritis-dissecans-a-historical-account-of-disease-definition
#15
Vittorio Tarabella, Giuseppe Filardo, Berardo DI Matteo, Luca Andriolo, Patrizia Tomba, Anna Viganò, Maurilio Marcacci
Osteochondritis dissecans (OCD) is a rare yet fascinating disease affecting young, active patients. It remains a 'mysterious disease' whose etiopathology, still unclear, is the subject of ongoing studies aiming improving the knowledge of this condition and, therefore, treatment options, too. Even though the first descriptions of intra-articular loose bodies date back to very ancient times, it is only relatively recently that, thanks to the contribution of some very eminent physicians, it became recognized as a specific orthopaedic condition...
July 2016: Joints
https://www.readbyqxmd.com/read/27900295/diagnostic-performance-of-volume-and-limited-oblique-mri-of-the-anterior-cruciate-ligament-compared-to-knee-arthroscopy
#16
Paula J Richards, Iain McCall, Alexandra Kraus, Mary Jones, Gayle Maffulli, Stephen Bridgman, Nicola Maffulli
BACKGROUND: Many strategies have been used to improve the visualisation of the ACL including sagittal, coronal oblique sequences, and 3D volume imaging. Nevertheless, the ACL may not always be visualised. METHODS: Two hundred and thirty-one consecutive patients (77 females; 154 males; average age 43.5, range 18 to 82 years; 205 with chronic, 20 acute, and 6 acute on chronic symptoms) underwent knee arthroscopy for mechanical symptoms within a week of MRI. After routine orthogonal sequences, if general MRI radiographers, with over four years experience, were not able to identify the presence of the ACL, then two 3D volume sequences and 2D limited sagittal oblique T1 sequences were performed...
April 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/27899292/engrampigenetics-epigenetics-of-engram-memory-cells
#17
Cristian Ripoli
For long time, the epidemiology of late-onset sporadic Alzheimer's disease (AD) risk factors has centered on adult life-style. Recent studies have, instead, focused on the role of early life experiences in progression of such disease especially in the context of prenatal and postnatal life. Although no single unfavorable environmental event has been shown to be neither necessary nor sufficient for AD development, it is possible that the sum of several environmentally induced effects, over time from early life, contribute to its pathophysiology through epigenetic mechanisms...
November 26, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27898731/reproducibility-and-validity-of-a-food-frequency-questionnaire-designed-to-assess-diet-in-children-aged-4-5-years
#18
Jesus Vioque, Daniel Gimenez-Monzo, Eva Maria Navarrete-Muñoz, Manuela Garcia-de-la-Hera, Sandra Gonzalez-Palacios, Marisa Rebagliato, Ferran Ballester, Mario Murcia, Carmen Iñiguez, Fernando Granado
BACKGROUND: The food frequency questionnaire (FFQ) is the most efficient and cost-effective method to investigate the relationship between usual diet and disease in epidemiologic studies. Although FFQs have been validated in many adult populations worldwide, the number of valid FFQ in preschool children is very scarce. The aim of this study was to evaluate the reproducibility and validity of a semi-quantitative FFQ designed for children aged 4 to 5 years. MATERIALS AND METHODS: In this study, we have included 169 children aged 4-5 years from the INMA project in Valencia, a population-based prospective cohort study of mothers and children in Spain...
2016: PloS One
https://www.readbyqxmd.com/read/27898690/isoflurane-exposure-induces-cell-death-microglial-activation-and-modifies-the-expression-of-genes-supporting-neurodevelopment-and-cognitive-function-in-the-male-newborn-piglet-brain
#19
Kevin D Broad, Jane Hassell, Bobbi Fleiss, Go Kawano, Mojgan Ezzati, Eridan Rocha-Ferreira, Mariya Hristova, Kate Bennett, Igor Fierens, Ryan Burnett, Badr Chaban, Daniel Alonso-Alconada, Aaron Oliver-Taylor, Ilias Tachsidis, Jamshid Rostami, Pierre Gressens, Robert D Sanders, Nicola J Robertson
Exposure of the brain to general anesthesia during early infancy may adversely affect its neural and cognitive development. The mechanisms mediating this are complex, incompletely understood and may be sexually dimorphic, but include developmentally inappropriate apoptosis, inflammation and a disruption to cognitively salient gene expression. We investigated the effects of a 6h isoflurane exposure on cell death, microglial activation and gene expression in the male neonatal piglet brain. Piglets (n = 6) were randomised to: (i) naive controls or (ii) 6h isoflurane...
2016: PloS One
https://www.readbyqxmd.com/read/27898071/are-adolescents-more-vulnerable-to-the-harmful-effects-of-cannabis-than-adults-a-placebo-controlled-study-in-human-males
#20
C Mokrysz, T P Freeman, S Korkki, K Griffiths, H V Curran
Preclinical research demonstrates that cannabinoids have differing effects in adolescent and adult animals. Whether these findings translate to humans has not yet been investigated. Here we believe we conducted the first study to compare the acute effects of cannabis in human adolescent (n=20; 16-17 years old) and adult (n=20; 24-28 years old) male cannabis users, in a placebo-controlled, double-blind cross-over design. After inhaling vaporized active or placebo cannabis, participants completed tasks assessing spatial working memory, episodic memory and response inhibition, alongside measures of blood pressure and heart rate, psychotomimetic symptoms and subjective drug effects (for example, 'stoned', 'want to have cannabis')...
November 29, 2016: Translational Psychiatry
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