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https://www.readbyqxmd.com/read/29458215/factors-associated-with-placental-vascularization-measured-by-3d-power-doppler-ultrasonographic-sphere-biopsy-between-11-and-14-weeks-of-gestation
#1
Suzanne Demers, Amelie Boutin, Regina Dembickaja, Mercedes Campanero, Kypros Nicolaides
OBJECTIVE: Preeclampsia is associated with placental vascularization disorders. Ultrasonographic sphere biopsy (USSB) of the placenta can estimate the vascularization of the placenta and potentially the risk of preeclampsia. We aimed to explore the factors related to placental vascularization measured with USSB in the first trimester. STUDY DESIGN: A prospective cohort was conducted in women recruited at 11 to 14 weeks. Three-dimensional acquisition of the placenta with power Doppler was undertaken along with crown-rump length (CRL)...
February 19, 2018: American Journal of Perinatology
https://www.readbyqxmd.com/read/29458028/are-portable-stereophotogrammetric-devices-reliable-in-facial-imaging-a-validation-study-of-vectra-h1-device
#2
Daniele Gibelli, Valentina Pucciarelli, Annalisa Cappella, Claudia Dolci, Chiarella Sforza
PURPOSE: Modern 3-dimensional (3D) image acquisition systems represent a crucial technologic development in facial anatomy because of their accuracy and precision. The recently introduced portable devices can improve facial databases by increasing the number of applications. In the present study, the VECTRA H1 portable stereophotogrammetric device was validated to verify its applicability to 3D facial analysis. MATERIALS AND METHODS: Fifty volunteers underwent 4 facial scans using portable VECTRA H1 and static VECTRA M3 devices (2 for each instrument)...
January 31, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29457868/exploring-acceptability-of-oral-prep-prior-to-implementation-among-female-sex-workers-in-south-africa
#3
Robyn Eakle, Adam Bourne, Judie Mbogua, Nyaradzo Mutanha, Helen Rees
INTRODUCTION: Female sex workers (FSWs) are at high-risk for HIV acquisition in South Africa, where the advent of new HIV prevention and treatment interventions represent the potential to significantly impact the epidemic. This paper focuses on aspects of PrEP acceptability as a new intervention within the context of a larger service delivery programme including the simultaneous rollout of early ART. This paper explores PrEP acceptability among the FGD participants as future potential users...
February 2018: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/29457791/quantitative-mapping-and-minimization-of-super-resolution-optical-imaging-artifacts
#4
Siân Culley, David Albrecht, Caron Jacobs, Pedro Matos Pereira, Christophe Leterrier, Jason Mercer, Ricardo Henriques
Super-resolution microscopy depends on steps that can contribute to the formation of image artifacts, leading to misinterpretation of biological information. We present NanoJ-SQUIRREL, an ImageJ-based analytical approach that provides quantitative assessment of super-resolution image quality. By comparing diffraction-limited images and super-resolution equivalents of the same acquisition volume, this approach generates a quantitative map of super-resolution defects and can guide researchers in optimizing imaging parameters...
February 19, 2018: Nature Methods
https://www.readbyqxmd.com/read/29457656/fatty-acid-binding-protein-deletion-prevents-stress-induced-preference-for-cocaine-and-dampens-stress-induced-corticosterone-levels
#5
John Hamilton, Matthew Marion, Antonio Figueiredo, Brendan H Clavin, Dale Deutsch, Martin Kaczocha, Samir Haj-Dahmane, Panayotis K Thanos
Genetic and pharmacological manipulation of endocannabinoid (eCB) signaling has previously been shown to have an important role on the rewarding properties of drugs of abuse, including cocaine. Recently, fatty acid binding proteins (FABPs) have been proposed as intracellular transporters of the endocannabinoid anandamide (AEA) as well as other bioactive lipids to their catabolic enzyme, fatty acid amide hydrolase (FAAH). The role of these transporters in modulating the brains reward system has yet to be investigated...
February 19, 2018: Synapse
https://www.readbyqxmd.com/read/29457587/power-cavitation-guided-blood-brain-barrier-opening-with-focused-ultrasound-and-microbubbles
#6
Mark T Burgess, Iason Zacharias Apostolakis, Elisa E Konofagou
Image-guided monitoring of microbubble-based focused ultrasound (FUS) therapies relies on the accurate localization of FUS-stimulated microbubble activity (i.e. acoustic cavitation). Passive cavitation imaging with ultrasound arrays can achieve this, but with insufficient spatial resolution. In this study, we address this limitation and perform high-resolution monitoring of acoustic cavitation-mediated blood-brain barrier (BBB) opening with a new technique called power cavitation imaging. By synchronizing the FUS transmit and passive receive acquisition, high-resolution passive cavitation imaging was achieved by using delay and sum (DAS) beamforming with absolute time delays...
February 19, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29457556/is-markedness-a-confused-concept
#7
Iris Berent
It is well known that, across languages, certain phonological features are more frequent than others. But whether these facts reflect abstract universal markedness constraints or functional pressures (auditory and articulatory difficulties and lexical frequency) is unknown. Romani, Galuzzi, Guariglia, and Goslin (2017) report that the putative markedness of phonological features captures their order of acquisition and their propensity to elicit errors in patients with an apraxia of speech (but not in phonological aphasia)...
October 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/29457555/encoding-of-distributional-regularities-independent-of-markedness-evidence-from-unimpaired-speakers
#8
Matthew Goldrick
Romani, Galuzzi, Guariglia, and Goslin (Comparing phoneme frequency, age of acquisition and loss in aphasia: Implications for phonological universals. Cognitive Neuropsychology) used speech error data from individuals with acquired impairments to argue that independent from articulatory complexity, within-language distributional regularities influence the processing of sound structure in speech production. Converging evidence from unimpaired speakers is reviewed, focusing on speech errors in language production...
October 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/29457554/complexity-of-articulation-planning-in-apraxia-of-speech-the-limits-of-phoneme-based-approaches
#9
Wolfram Ziegler
This report presents evidence suggesting that the phoneme-based approach taken by Romani, Galuzzi, Guariglia, and Goslin (Comparing phoneme frequency, age of acquisition, and loss in aphasia: Implications for phonological universals. Cognitive Neuropsychology, this issue) falls short of capturing the complexity of articulation planning in patients with apraxia of speech. Empirical and modelling data are reported to demonstrate that the apraxic pathomechanism resides in the hierarchical architecture of phonological words rather than in the context-independent properties of phonemes...
October 2017: Cognitive Neuropsychology
https://www.readbyqxmd.com/read/29456880/cost-effectiveness-of-nivolumab-in-patients-with-advanced-renal-cell-carcinoma-treated-in-the-united-states
#10
Charles McCrea, Sukhvinder Johal, Shuo Yang, Justin Doan
Background: We evaluated the cost-effectiveness of nivolumab versus everolimus in patients with advanced renal cell carcinoma (RCC) from a US payer perspective. Methods: A partitioned survival model consisting of three health states, progression-free survival (PFS), progressive disease, and death, was developed to evaluate the cost-effectiveness of intravenous nivolumab versus oral everolimus over a lifetime. The proportion of patients in each state was calculated based on parametric distributions fitted to PFS and overall survival (OS) data from CheckMate 025 (N = 821), a large randomized phase 3 trial of nivolumab versus everolimus for advanced RCC...
2018: Experimental Hematology & Oncology
https://www.readbyqxmd.com/read/29456716/transient-severe-motion-during-arterial-phase-in-patients-with-gadoxetic-acid-administration-can-a-five-hepatic-arterial-subphases-technique-mitigate-the-artifact
#11
Yu-Dong Xiao, Cong Ma, Jun Liu, Hua-Bing Li, Shun-Ke Zhou, Zi-Shu Zhang
Gadoxetic acid (Gd-EOB-DTPA) is a hepatocyte-specific magnetic resonance (MR) contrast agent, which has been increasingly used in recent years. However, it has been reported that Gd-EOB-DTPA related transient severe motion (TSM) is sometimes observed during the hepatic arterial phase of MR imaging, which may influence image quality. Since the hepatic arterial phase of contrast enhancement is used for the diagnosis of hepatocellular carcinoma, it is crucial to obtain a decent arterial phase imaging. The present study analyzed motion in patients receiving Gd-EOB-DTPA, comparing a single arterial phase acquisition to a five arterial phase acquisition to determine whether the multiphase acquisition was able to alleviate the TSM-related hepatic arterial MR imaging artifact...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456523/g-protein-coupled-receptors-as-regulators-of-localized-translation-the-forgotten-pathway
#12
REVIEW
Aurélie Tréfier, Lucie P Pellissier, Astrid Musnier, Eric Reiter, Florian Guillou, Pascale Crépieux
G protein-coupled receptors (GPCRs) exert their physiological function by transducing a complex signaling network that coordinates gene expression and dictates the phenotype of highly differentiated cells. Much is known about the gene networks they transcriptionally regulate upon ligand exposure in a process that takes hours before a new protein is synthesized. However, far less is known about GPCR impact on the translational machinery and subsequent mRNA translation, although this gene regulation level alters the cell phenotype in a strikingly different timescale...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29456516/the-socio-communicative-development-of-preterm-infants-is-resistant-to-the-negative-effects-of-parity-on-maternal-responsiveness
#13
Ivete F R Caldas, Marilice F Garotti, Victor K M Shiramizu, Antonio Pereira
Humans are born completely dependent on adult care for survival. To get the necessary support, newborns rely on socio-communicative abilities which have both innate and learned components. Maternal responsiveness (MR), as a critical aspect of mother-infant interaction, is a robust predictor of the acquisition of socio-communicative abilities. However, maternal responsiveness (MR) is influenced by parity, since mothers rely on a limited capacity of cognitive control for efficient attachment with their offspring...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29456439/parent-training-and-skill-acquisition-and-utilization-among-spanish-and-english-speaking-latino-families
#14
Giovanni Ramos, Angela M Blizzard, Nicole E Barroso, Daniel M Bagner
In the U.S., there is a growing Latino population, in which parents primarily speak Spanish to their children. Despite the evidence that language preference is associated with level of acculturation and influences parenting practices in these families, no study has compared how Spanish-and English-speaking Latino families acquire and utilize the skills taught during parent-training programs such as Parent-Child Interaction Therapy (PCIT). Twenty-seven mother-infant Latino dyads received a home-based adaptation of the Child-Directed Interaction (CDI) phase of PCIT as part of a larger randomized control trial...
January 2018: Journal of Child and Family Studies
https://www.readbyqxmd.com/read/29456288/distributional-learning-of-subcategories-in-an-artificial-grammar-category-generalization-and-subcategory-restrictions
#15
Patricia A Reeder, Elissa L Newport, Richard N Aslin
There has been significant recent interest in clarifying how learners use distributional information during language acquisition. Many researchers have suggested that distributional learning mechanisms play a major role during grammatical category acquisition, since linguistic form-classes (like noun and verb ) and subclasses (like masculine and feminine grammatical gender) are primarily defined by the ways lexical items are distributed in syntactic contexts. Though recent experimental work has affirmed the importance of distributional information for category acquisition, there has been little evidence that learners can acquire linguistic subclasses based only on distributional cues...
December 2017: Journal of Memory and Language
https://www.readbyqxmd.com/read/29456083/placeholder-nucleosomes-underlie-germline-to-embryo-dna-methylation-reprogramming
#16
Patrick J Murphy, Shan Fu Wu, Cody R James, Candice L Wike, Bradley R Cairns
The fate and function of epigenetic marks during the germline-to-embryo transition is a key issue in developmental biology, with relevance to stem cell programming and transgenerational inheritance. In zebrafish, DNA methylation patterns are programmed in transcriptionally quiescent cleavage embryos; paternally inherited patterns are maintained, whereas maternal patterns are reprogrammed to match the paternal. Here, we provide the mechanism by demonstrating that "Placeholder" nucleosomes, containing histone H2A variant H2A...
February 9, 2018: Cell
https://www.readbyqxmd.com/read/29455947/the-neural-exploitation-hypothesis-and-its-implications-for-an-embodied-approach-to-language-and-cognition-insights-from-the-study-of-action-verbs-processing-and-motor-disorders-in-parkinson-s-disease
#17
REVIEW
Vittorio Gallese, Valentina Cuccio
As it is widely known, Parkinson's disease is clinically characterized by motor disorders such as the loss of voluntary movement control, including resting tremor, postural instability, and bradykinesia (Bocanegra et al., 2015; Helmich, Hallett, Deuschl, Toni, & Bloem, 2012; Liu et al., 2006; Rosin, Topka, & Dichgans, 1997). In the last years, many empirical studies (e.g., Bocanegra et al., 2015; Spadacenta et al., 2012) have also shown that the processing of action verbs is selectively impaired in patients affected by this neurodegenerative disorder...
February 2, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29455867/above-and-beyond-objects-the-development-of-infants-spatial-concepts
#18
Marianella Casasola
Early in development infants form categorical representations of small-scale spatial relations, such as left vs right and above vs below. This spatial skill allows infants to experience coherence in the layout of the objects in their environment and to note the equivalence of a spatial relation across changes in objects. Comparisons across studies of infant spatial categorization offer insight into the processes that contribute to the development of this skill. Rather than viewing contrasting results across studies as contradictory, identifying how infant spatial categorization tasks recruit distinct processes can not only reconcile findings but also yield insight into the starting points, development, and emerging nature of infants' representations of spatial relations...
2018: Advances in Child Development and Behavior
https://www.readbyqxmd.com/read/29455861/children-s-developing-ideas-about-knowledge-and-its-acquisition
#19
Samuel Ronfard, Deborah T Bartz, Liao Cheng, Xinkui Chen, Paul L Harris
We review key aspects of young children's concept of knowledge. First, we discuss children's early insights into the way that information can be communicated from informant to recipient as well as their active search for information via questions. We then analyze the way that preschool children talk explicitly and cogently about knowledge and the presuppositions they make in doing so. We argue that all children, irrespective of culture and language, eventually arrive at the same fundamental conception of knowledge in the preschool years...
2018: Advances in Child Development and Behavior
https://www.readbyqxmd.com/read/29455713/age-specific-global-prevalence-of-hepatitis-b-hepatitis-c-hiv-and-tuberculosis-among-incarcerated-people-a-systematic-review
#20
REVIEW
Stuart A Kinner, Kathryn Snow, Andrea L Wirtz, Frederick L Altice, Chris Beyrer, Kate Dolan
PURPOSE: This study aims to compare the global prevalence of hepatitis B, hepatitis C, HIV, and tuberculosis in incarcerated adolescents and young adults (AYAs) and older prisoners. METHODS: This study is a systematic review and meta-analysis of studies reporting the age-specific prevalence of each infection in prisoners. We grouped age-specific prevalence estimates into three overlapping age categories: AYA prisoners (<25 years), older prisoners (≥25 years), and mixed category (spanning age 25 years)...
March 2018: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
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