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https://www.readbyqxmd.com/read/29679625/nutrition-therapy-within-and-beyond-gestational-diabetes
#1
REVIEW
Teri L Hernandez, Archana Mande, Linda A Barbour
With the global rising prevalence of gestational diabetes (GDM), an adaptable, economical approach to nutrition therapy that effectively controls maternal glycemia while promoting normal fetal growth will have far-reaching implications. The conventional focus has been to rigidly limit all types of carbohydrate. While controlling glucose, this approach fosters maternal anxiety and is a primary barrier to adherence. Many mothers substitute fat for carbohydrate, which may unintentionally enhance lipolysis, promote elevated free fatty acids (FFA), and worsen maternal insulin resistance (IR)...
April 18, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29679401/translational-regulation-of-ribosomal-protein-s15-drives-characteristic-patterns-of-protein-mrna-epistasis
#2
Saurav Mallik, Sudipto Basu, Suman Hait, Sudip Kundu
Do coding and regulatory segments of a gene co-evolve with each-other? Seeking answers to this question, here we analyze the case of Escherichia coli ribosomal protein S15, that represses its own translation by specifically binding its messenger RNA (rpsO mRNA) and stabilizing a pseudoknot structure at the upstream untranslated region, thus trapping the ribosome into an incomplete translation initiation complex. In the absence of S15, ribosomal protein S1 recognizes rpsO and promotes translation by melting this very pseudoknot...
April 21, 2018: Proteins
https://www.readbyqxmd.com/read/29679324/controlling-fibrin-network-morphology-polymerization-and-degradation-dynamics-in-fibrin-gels-for-promoting-tissue-repair
#3
Erin P Sproul, Riley T Hannan, Ashley C Brown
Fibrin is an integral part of the clotting cascade and is formed by polymerization of the soluble plasma protein fibrinogen. Following stimulation of the coagulation cascade, thrombin activates fibrinogen, which binds to adjacent fibrin(ogen) molecules resulting in the formation of an insoluble fibrin matrix. This fibrin network is the primary protein component in clots and subsequently provides a scaffold for infiltrating cells during tissue repair. Due to its role in hemostasis and tissue repair, fibrin has been used extensively as a tissue sealant...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29679262/serum-osteoprotegerin-levels-and-mammographic-density-among-high-risk-women
#4
Olivia Moran, Tasnim Zaman, Andrea Eisen, Rochelle Demsky, Kristina Blackmore, Julia A Knight, Christine Elser, Ophira Ginsburg, Kevin Zbuk, Martin Yaffe, Steven A Narod, Leonardo Salmena, Joanne Kotsopoulos
PURPOSE: Mammographic density is a risk factor for breast cancer but the mechanism behind this association is unclear. The receptor activator of nuclear factor κB (RANK)/RANK ligand (RANKL) pathway has been implicated in the development of breast cancer. Given the role of RANK signaling in mammary epithelial cell proliferation, we hypothesized this pathway may also be associated with mammographic density. Osteoprotegerin (OPG), a decoy receptor for RANKL, is known to inhibit RANK signaling...
April 20, 2018: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/29678818/angiolymphoid-hyperplasia-of-external-ear-treated-with-intralesional-radiofrequency-ablation
#5
Deepika Yadav, Sanjay Singh, Neetu Bhari, Somesh Gupta
A 21-year-old woman presented with multiple erythematous to skin-coloured dome-shaped firm papules and plaques over the right ear concha and external auditory canal for 1 year. It was associated with occasional itching and bleeding. Her main concern was cosmetic disfigurement. Biopsy showed presence of multiple proliferating blood vessels lined by plump epithelioid endothelial cells surrounded by dense infiltrate of lymphocytes, histiocytes and eosinophils. Other routine investigations were within normal limits...
April 20, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29678815/feedback-between-tissue-packing-and-neurogenesis-in-the-zebrafish-neural-tube
#6
Tom W Hiscock, Joel B Miesfeld, Kishore R Mosaliganti, Brian A Link, Sean G Megason
Balancing the rate of differentiation and proliferation in developing tissues is essential to produce organs of robust size and composition. Whilst many molecular regulators have been established, how these connect to physical and geometrical aspects of tissue architecture is poorly understood. Here, using high-resolution timelapse imaging, we find that changes to cell geometry associated with dense tissue packing play a significant role in regulating differentiation rate in the zebrafish neural tube. Specifically, progenitors that are displaced away from the apical surface due to crowding tend to differentiate, in a Notch-dependent manner...
April 20, 2018: Development
https://www.readbyqxmd.com/read/29678598/the-benefits-of-defining-snacks
#7
Julie M Hess, Joanne L Slavin
Whether eating a "snack" is considered a beneficial or detrimental behavior is largely based on how "snack" is defined. The term "snack food" tends to connote energy-dense, nutrient-poor foods high in nutrients to limit (sugar, sodium, and/or saturated fat) like cakes, cookies, chips and other salty snacks, and sugar-sweetened beverages. Eating a "snack food" is often conflated with eating a "snack," however, leading to an overall perception of snacks as a dietary negative...
April 17, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29678556/heterogeneity-among-hospitals-statewide-in-percentage-shares-of-the-annual-growth-of-surgical-caseloads-of-inpatient-and-outpatient-major-therapeutic-procedures
#8
Franklin Dexter, Craig Jarvie, Richard H Epstein
STUDY OBJECTIVE: Suppose that it were a generalizable finding, in both densely populated and rural states, that there is marked heterogeneity among hospitals in the percentage change in surgical caseload and/or in the total change in caseload. Then, individual hospitals should not simply rely on federal and state forecasts to infer their expected growth. Likewise, individual hospitals and their anesthesiology groups would best not rely on national or US regional surgical trends as causal reasons for local trends in caseload...
April 17, 2018: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/29678140/using-nanosims-coupled-with-microfluidics-to-visualize-the-early-stages-of-coral-infection-by-vibrio-coralliilyticus
#9
E Gibbin, A Gavish, I Domart-Coulon, E Kramarsky-Winter, O Shapiro, A Meibom, A Vardi
BACKGROUND: Global warming has triggered an increase in the prevalence and severity of coral disease, yet little is known about coral/pathogen interactions in the early stages of infection. The point of entry of the pathogen and the route that they take once inside the polyp is currently unknown, as is the coral's capacity to respond to infection. To address these questions, we developed a novel method that combines stable isotope labelling and microfluidics with transmission electron microscopy (TEM) and nanoscale secondary ion mass spectrometry (NanoSIMS), to monitor the infection process between Pocillopora damicornis and Vibrio coralliilyticus under elevated temperature...
April 20, 2018: BMC Microbiology
https://www.readbyqxmd.com/read/29677367/stable-microsaccades-and-microsaccade-induced-global-alpha-band-phase-reset-across-the-life-span
#10
Ying Gao, Carl Huber, Bernhard A Sabel
Purpose: To understand the effect of aging on microsaccade functions and brain physiologic responses, we quantified microsaccades and their physiologic correlates (including their interaction with alpha band brain oscillation) in normal subjects of different ages. Methods: Twenty-two normally sighted young (18 to 29 years), 22 middle-aged (31 to 55 years), and 22 elderly subjects (56 to 77 years) participated in this cross-sectional study. Dense array EEG and high-resolution eye-tracking data were simultaneously recorded during a fixation task...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29677327/visual-crowding-is-unaffected-by-adaptation-induced-spatial-compression
#11
Alison Chambers, Alan Johnston, Neil W Roach
It has recently been shown that adapting to a densely textured stimulus alters the perception of visual space, such that the distance between two points subsequently presented in the adapted region appears reduced (Hisakata, Nishida, & Johnston, 2016). We asked whether this form of adaptation-induced spatial compression alters visual crowding. To address this question, we first adapted observers to a dynamic dot texture presented within an annular region surrounding the test location. Following adaptation, observers perceived a test array comprised of multiple oriented dot dipoles as spatially compressed, resulting in an overall reduction in perceived size...
March 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29677184/elasticity-based-boosting-of-neuroepithelial-nucleokinesis-via-indirect-energy-transfer-from-mother-to-daughter
#12
Tomoyasu Shinoda, Arata Nagasaka, Yasuhiro Inoue, Ryo Higuchi, Yoshiaki Minami, Kagayaki Kato, Makoto Suzuki, Takefumi Kondo, Takumi Kawaue, Kanako Saito, Naoto Ueno, Yugo Fukazawa, Masaharu Nagayama, Takashi Miura, Taiji Adachi, Takaki Miyata
Neural progenitor cells (NPCs), which are apicobasally elongated and densely packed in the developing brain, systematically move their nuclei/somata in a cell cycle-dependent manner, called interkinetic nuclear migration (IKNM): apical during G2 and basal during G1. Although intracellular molecular mechanisms of individual IKNM have been explored, how heterogeneous IKNMs are collectively coordinated is unknown. Our quantitative cell-biological and in silico analyses revealed that tissue elasticity mechanically assists an initial step of basalward IKNM...
April 20, 2018: PLoS Biology
https://www.readbyqxmd.com/read/29677183/divergent-genome-evolution-caused-by-regional-variation-in-dna-gain-and-loss-between-human-and-mouse
#13
Reuben M Buckley, R Daniel Kortschak, David L Adelson
The forces driving the accumulation and removal of non-coding DNA and ultimately the evolution of genome size in complex organisms are intimately linked to genome structure and organisation. Our analysis provides a novel method for capturing the regional variation of lineage-specific DNA gain and loss events in their respective genomic contexts. To further understand this connection we used comparative genomics to identify genome-wide individual DNA gain and loss events in the human and mouse genomes. Focusing on the distribution of DNA gains and losses, relationships to important structural features and potential impact on biological processes, we found that in autosomes, DNA gains and losses both followed separate lineage-specific accumulation patterns...
April 20, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29677169/-dentromers-a-family-of-super-dendrimers-with-specific-properties-and-applications
#14
REVIEW
Didier Astruc, Christophe Deraedt, Rodrigue Djeda, Catia Ornelas, Xiang Liu, Amalia Rapakousiou, Jaime Ruiz, Yanlan Wang, Qi Wang
Dentromer s (from dentro, δεντρο: tree in Greek), and meros (μεροσ, in greek: part) are introduced as a family of dendrimers constructed according to successive divergent 1 → 3 branching. The smaller dentromers have 27 terminal branches. With alcohol termini they were originally named arborols by Newkome, who pioneered 1 → 3 constructions of dendrimers and dendrons. Giant dentromers have been constructed and decorated in particular with ferrocene and other redox active groups...
April 20, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29676920/aliphatic-c-h-bond-oxidation-with-hydrogen-peroxide-catalyzed-by-manganese-complexes-directing-selectivity-through-torsional-effects
#15
Michela Milan, Massimo Bietti, Miquel Costas
Substituted N-cyclohexyl amides undergo aliphatic C-H bond oxidation with H2 O2 catalyzed by manganese complexes. The reactions are directed by torsional effects leading to site-selective oxidation of cis-1,4-, trans-1,3-, and cis-1,2-cyclohexanediamides. The corresponding diastereoisomers are unreactive under the same conditions. Competitive oxidation of cis- trans mixtures of 4-substituted N-cyclohexylamides leads to quantitative conversion of the cis-isomers, allowing isolation and successive conversion of the trans-isomers into densely functionalized oxidation products with excellent site selectivity and good enantioselectivity...
April 20, 2018: Organic Letters
https://www.readbyqxmd.com/read/29676743/performance-of-a-pervaporation-system-for-the-separation-of-an-ethanol-water-mixture-using-fractional-condensation
#16
Jie Liu, Jiding Li, Quan Chen, Xiaoduan Li
Polydimethylsiloxane (PDMS)/polyvinylidene fluoride (PVDF) composite membranes were fabricated and subsequently applied in ethanol recovery from an ethanol-water mixture by pervaporation (PV) using fractional condensation. The effects of feed temperature and feed flow velocity on the pervaporative properties of PDMS/PVDF composite membranes were investigated. Scanning electron microscopy (SEM) results showed that PDMS was coated uniformly on the surface of porous PVDF substrate, and the PDMS separation layer was dense with a thickness of 1...
April 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29676516/the-pea-leafminer-liriomyza-huidobrensis-diptera-agromyzidae-uses-the-vibrational-duets-for-efficient-sexual-communication
#17
Jin Ge, Jia-Ning Wei, Ding-Jie Zhang, Chun Hu, De-Zhi Zheng, Le Kang
The pea leafminer (Liriomyza huidobrensis) is a notorious pest of vegetables and ornamental plants worldwide. Despite a large number of studies on its biology and ecology, the courtship behavior and sexual communication of this species remain unclear. Here, we studied the vibrational communication in the sexual interaction of the pea leafminer. On host plant leaves, females and males behaviorally displayed the bobbing-quivering alternation, which finally led to copulation. Moreover, records of laser vibrometry revealed three-signal duets underlying the behavioral alternation...
April 20, 2018: Insect Science
https://www.readbyqxmd.com/read/29675896/verbal-working-memory-related-neural-network-communication-in-schizophrenia
#18
Thomas Kustermann, Tzvetan Popov, Gregory A Miller, Brigitte Rockstroh
Impaired working memory (WM) in schizophrenia is associated with reduced hemodynamic and electromagnetic activity and altered network connectivity within and between memory-associated neural networks. The present study sought to determine whether schizophrenia involves disruption of a frontal-parietal network normally supporting WM and/or involvement of another brain network. Nineteen schizophrenia patients (SZ) and 19 healthy comparison subjects (HC) participated in a cued visual-verbal Sternberg task while dense-array EEG was recorded...
April 19, 2018: Psychophysiology
https://www.readbyqxmd.com/read/29675855/sub-topographic-maps-for-regionally-enhanced-analysis-of-visual-space-in-the-mouse-retina
#19
Rana N El-Danaf, Andrew D Huberman
In many species, neurons are unevenly distributed across the retina, leading to nonuniform analysis of specific visual features at certain locations in visual space. In recent years, the mouse has emerged as a premiere model for probing visual system function, development and disease. Thus, achieving a detailed understanding of mouse visual circuit architecture is of paramount importance. The general belief is that mice possess a relatively even topographic distribution of retinal ganglion cells (RGCs)- the output neurons of the eye...
April 20, 2018: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29675467/freshening-by-glacial-meltwater-enhances-melting-of-ice-shelves-and-reduces-formation-of-antarctic-bottom-water
#20
Alessandro Silvano, Stephen Rich Rintoul, Beatriz Peña-Molino, William Richard Hobbs, Esmee van Wijk, Shigeru Aoki, Takeshi Tamura, Guy Darvall Williams
Strong heat loss and brine release during sea ice formation in coastal polynyas act to cool and salinify waters on the Antarctic continental shelf. Polynya activity thus both limits the ocean heat flux to the Antarctic Ice Sheet and promotes formation of Dense Shelf Water (DSW), the precursor to Antarctic Bottom Water. However, despite the presence of strong polynyas, DSW is not formed on the Sabrina Coast in East Antarctica and in the Amundsen Sea in West Antarctica. Using a simple ocean model driven by observed forcing, we show that freshwater input from basal melt of ice shelves partially offsets the salt flux by sea ice formation in polynyas found in both regions, preventing full-depth convection and formation of DSW...
April 2018: Science Advances
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