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https://www.readbyqxmd.com/read/28930491/fetal-and-infant-growth-patterns-and-risk-of-lower-lung-function-and-asthma-the-generation-r-study
#1
Herman T den Dekker, Vincent W V Jaddoe, Irwin K Reiss, Johan C de Jongste, Liesbeth Duijts
BACKGROUND: Children with lower birth weight are at increased risk of asthma symptoms. We examined associations of fetal and infant growth with childhood lung function and asthma. METHODS: This study was embedded in a population-based prospective cohort study among 5,635children. Growth was estimated by repeated ultrasounds in 2nd and 3th trimester, and measured at birth and at 3, 6 and 12 months. At age 10 years, spirometry was performed and asthma was assessed by parental questionnaire...
September 20, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28929301/urban-heart-detroit-a-tool-to-better-understand-and-address-health-equity-gaps-in-the-city
#2
R Mehdipanah, A J Schulz, B A Israel, C Gamboa, Z Rowe, M Khan, A Allen
The Urban Health Equity Assessment Response Tool (Urban HEART) combines statistical evidence and community knowledge to address urban health inequities. This paper describes the process of adopting and implementing this tool for Detroit, Michigan, the first city in the USA to use it. The six steps of Urban HEART were implemented by the Healthy Environments Partnership, a community-based participatory research partnership made up of community-based organizations, health service providers, and researchers based in academic institutions...
September 19, 2017: Journal of Urban Health: Bulletin of the New York Academy of Medicine
https://www.readbyqxmd.com/read/28927929/mechanical-characterization-of-structurally-porous-biomaterials-built-via-additive-manufacturing-experiments-predictive-models-and-design-maps-for-load-bearing-bone-replacement-implants
#3
D Melancon, Z S Bagheri, R B Johnston, L Liu, M Tanzer, D Pasini
Porous biomaterials can be additively manufactured with micro-architecture tailored to satisfy the stringent mechano-biological requirements imposed by bone replacement implants. In a previous investigation, we introduced structurally porous biomaterials, featuring strength five times stronger than commercially available porous materials, and confirmed their bone ingrowth capability in an in-vivo canine model. While encouraging, the manufactured biomaterials showed geometric mismatches between their internal porous architecture and that of its as-designed counterpart, as well as discrepancies between predicted and tested mechanical properties, issues not fully elucidated...
September 16, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28926883/-etiological-analysis-and-in-vitro-drug-sensitivity-of-bacterial-keratitis-in-northern-china-in-the-period-of-2006-2015
#4
Y Zhang, Z Q Wang, X G Sun
Objective: To analyze the etiology and drug sensitivity of bacterial keratitis and their changes, and to provide evidence for treatment and drug selection of bacterial keratitis. Methods: Retrospective case series study. From January 2006 to December 2015, corneal specimens suspected of bacterial infection were collected and cultured in Beijing Tongren Eye Center. General information of patients, etiological results and drug sensitivity test results were summarized and analyzed. The Chi-square test and Spearman correlation analysis were performed using SPSS 20...
September 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28925496/study-on-the-relationship-between-the-rassf10-gene-and-the-biological-behavior-of-hepatocellular-carcinoma-cells
#5
J Xie, Y Chen, F Meng, T Shu, Y Liu, L Zhang, Z-X Zhang
OBJECTIVE: To investigate the relationship between Ras association domain family gene 10 (RASSF10 gene) and the biological behavior of hepatocellular carcinoma (HCC), including proliferation, invasion, and metastasis. MATERIALS AND METHODS: HCC cell lines were generated with stable overexpression or low expression of RASSF10 protein. A cell line transfected with an empty vector was treated as control. At 12, 24, 48, and 72 h, the cell proliferation was determined by MTT assay, the invasion ability was determined by Transwell chambers, and the scratch assay was used to assess the migration ability...
August 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28925390/alterations-of-micrornas-throughout-the-malignant-evolution-of-cutaneous-squamous-cell-carcinoma-the-role-of-mir-497-in-epithelial-to-mesenchymal-transition-of-keratinocytes
#6
A Mizrahi, A Barzilai, D Gur-Wahnon, I Z Ben-Dov, S Glassberg, T Meningher, E Elharar, M Masalha, J Jacob-Hirsch, H Tabibian-Keissar, I Barshack, J Roszik, R Leibowitz-Amit, Y Sidi, D Avni
Skin carcinogenesis is known to be a multi-step process with several stages along its malignant evolution. We hypothesized that transformation of normal epidermis to cutaneous squamous cell carcinoma (cSCC) is causally linked to alterations in microRNAs (miRNA) expression. For this end we decided to evaluate their alterations in the pathologic states ending in cSCC. Total RNA was extracted from formalin fixed paraffin embedded biopsies of five stages along the malignant evolution of keratinocytes towards cSCC: Normal epidermis, solar elastosis, actinic keratosis KIN1-2, advanced actinic keratosis KIN3 and well-differentiated cSCC...
September 18, 2017: Oncogene
https://www.readbyqxmd.com/read/28921699/morphological-determinants-of-carrier-frequency-signal-in-katydids-orthoptera-a-comparative-analysis-using-biophysical-evidence
#7
Fernando Montealegre-Z, Jessica Ogden, Thorin Jonsson, Carl D Soulsbury
Male katydids produce mating calls by stridulation using specialized structures on the forewings. The right wing (RW) bears a scraper connected to a drum-like cell known as the mirror and a left wing (LW) that overlaps the RW and bears a serrated vein on the ventral side, the stridulatory file. Sound is generated with the scraper sweeping across the file, producing vibrations that are amplified by the mirror. Using this sound generator, katydids exploit a range of song carrier frequencies (CF) unsurpassed by any other insect group, with species singing as low as 600 Hz and others as high as 150 kHz...
September 16, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28921450/nutrients-other-than-selenium-are-important-for-promoting-children-s-health-in-kashin-beck-disease-areas
#8
Yujie Ning, Xi Wang, Xiong Guo, Pan Zhang, Pengfei Qu, Feng Zhang, Sen Wang, Yanxia Lei, Mikko Lammi
Overall nutritional status has been proved associated with people's health. The overall nutritional status of children in Kashin-Beck disease (KBD) areas has been overlooked for decades. Therefore, it is worth investigating in the current generation to gather evidence and make suggestions for improvement. A cross-sectional study with three 24-h dietary recalls was conducted to collect raw data on the daily food intake of children. Recorded food was converted into daily nutrient intakes using CDGSS 3.0 software...
September 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28921427/human-cells-as-platform-to-produce-gamma-carboxylated-proteins
#9
Aline de Sousa Bomfim, Marcela Cristina Corrêa de Freitas, Dimas Tadeu Covas, Elisa Maria de Sousa Russo
The gamma-carboxylated proteins belong to a family of proteins that depend on vitamin K for normal biosynthesis. The major representative gamma-carboxylated proteins are the coagulation system proteins, for example, factor VII, factor IX, factor X, prothrombin, and proteins C, S, and Z. These molecules have harbored posttranslational modifications, such as glycosylation and gamma-carboxylation, and for this reason they need to be produced in mammalian cell lines. Human cells lines have emerged as the most promising alternative to the production of gamma-carboxylated proteins...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28920073/design-of-pilot-studies-to-inform-the-construction-of-composite-outcome-measures
#10
Steven D Edland, M Colin Ard, Weiwei Li, Lingjing Jiang
BACKGROUND: Composite scales have recently been proposed as outcome measures for clinical trials. For example, the Prodromal Alzheimer's Cognitive Composite (PACC) is the sum of z-score normed component measures assessing episodic memory, timed executive function, and global cognition. Alternative methods of calculating composite total scores using the weighted sum of the component measures that maximize signal-to-noise of the resulting composite score have been proposed. Optimal weights can be estimated from pilot data, but it is an open question how large a pilot trial is required to calculate reliably optimal weights...
June 2017: Alzheimer's & Dementia: Translational Research & Clinical Interventions
https://www.readbyqxmd.com/read/28919865/coping-with-salt-water-habitats-metabolic-and-oxidative-responses-to-salt-intake-in-the-rufous-collared-sparrow
#11
Pablo Sabat, Cristóbal Narváez, Isaac Peña-Villalobos, Carolina Contreras, Karin Maldonado, Juan C Sanchez-Hernandez, Seth D Newsome, Roberto Nespolo, Francisco Bozinovic
Many physiological adjustments occur in response to salt intake in several marine taxa, which manifest at different scales from changes in the concentration of individual molecules to physical traits of whole organisms. Little is known about the influence of salinity on the distribution, physiological performance, and ecology of passerines; specifically, the impact of drinking water salinity on the oxidative status of birds has been largely ignored. In this study, we evaluated whether experimental variations in the salt intake of a widely-distributed passerine (Zontotrichia capensis) could generate differences in basal (BMR) and maximum metabolic rates (Msum), as well as affect metabolic enzyme activity and oxidative status...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28918330/thick-target-total-bremsstrahlung-spectra-of-lead-compounds-in-the-photon-energy-region-1-10kev-by-90-sr-beta-particles
#12
Suhansar Jit Sharma, Tajinder Singh, Doordarshi Singh, Amrit Singh, A S Dhaliwal
Total bremsstrahlung spectral photon distribution generated in thick targets of lead compounds Pb(CH3COO)2·3H2O, Pb(NO3)2 and PbCl2 by (90)Sr beta particles has been investigated theoretically and experimentally in the photon energy region 1-10keV. The experimental results are compared with the theoretical models describing ordinary bremsstrahlung and the theoretical model which includes polarization bremsstrahlung into ordinary bremsstrahlung, in stripped approximation. It is observed that the experimental results show better agreement with the model which describes bremsstrahlung in stripped approximation in the energy range 3-10keV...
September 9, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28917854/tilia-tomentosa-pectins-exhibit-dual-mode-of-action-on-phagocytes-as-%C3%AE-glucuronic-acid-monomers-are-abundant-in-their-rhamnogalacturonans-i
#13
Yordan N Georgiev, Berit S Paulsen, Hiroaki Kiyohara, Milan Ciz, Manol H Ognyanov, Ondrej Vasicek, Frode Rise, Petko N Denev, Antonin Lojek, Tsvetelina G Batsalova, Balik M Dzhambazov, Haruki Yamada, Reidar Lund, Hilde Barsett, Albert I Krastanov, Irina Z Yanakieva, Maria G Kratchanova
Silver linden flowers contain different pectins (PSI-PSIII) with immunomodulating properties. PSI is a low-esterified pectic polysaccharide with predominant homogalacturonan region, followed by rhamnogalacturonan I (RGI) with arabinogalactan II and RGII (traces) domains. PSII and PSIII are unusual glucuronidated RGI polymers. PSIII is a unique high molecular weight RGI, having almost completely O-3 glucuronidated GalA units with >30% O-3 acetylation at the Rha units. Linden pectins induced reactive oxygen species (ROS) and NO generation from non-stimulated whole blood phagocytes and macrophages, resp...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917721/low-levels-of-the-immunoregulator-semaphorin-4d-cd100-in-sera-of-hiv-patients
#14
Z Vadas, D Elbirt, S Radian, S Bezalel-Rosenberg, K Mahlab-Guri, E Toubi, I Asher, Z Sthoeger
INTRODUCTION: Semaphorin-4D (CD100), generated by CD4/CD8 cells, plays an important role in T cells activation. It also regulates B cell differentiation via its receptor the CD72. Both have soluble forms - sCD100/sCD72. METHODS: sCD100 and sCD72 levels were determined by ELISA (MyBioSource, USA). RESULTS: 28 chronic HIV patients and 50 matched healthy volunteers participated in our study. Before treatment, CD4 cell counts were 267±216cells/mcl and viral load (VL) was 586,675±1,897,431copies/ml...
September 13, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28916768/dynamics-of-necklace-beams-in-nonlinear-colloidal-suspensions
#15
Wiktor Walasik, Salih Z Silahli, Natalia M Litchinitser
Recently, we have predicted that the modulation instability of optical vortex solitons propagating in nonlinear colloidal suspensions with exponential saturable nonlinearity leads to formation of necklace beams (NBs). Here, we investigate the dynamics of NB formation and propagation, and demonstrate a variety of optical beam structures emerging upon vortex beam propagation in engineered nonlinear colloidal medium. In particular, we show that the distance at which the NB is formed depends on the input power of the vortex beam...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916180/interpreting-temporal-fluctuations-in-resting-state-functional-connectivity-mri
#16
REVIEW
Raphaël Liégeois, Timothy O Laumann, Abraham Z Snyder, Juan Zhou, B T Thomas Yeo
Resting-state functional connectivity is a powerful tool for studying human functional brain networks. Temporal fluctuations in functional connectivity, i.e., dynamic functional connectivity (dFC), are thought to reflect dynamic changes in brain organization and non-stationary switching of discrete brain states. However, recent studies have suggested that dFC might be attributed to sampling variability of static FC. Despite this controversy, a detailed exposition of stationarity and statistical testing of dFC is lacking in the literature...
September 12, 2017: NeuroImage
https://www.readbyqxmd.com/read/28916130/stress-and-seizures-space-time-and-hippocampal-circuits
#17
REVIEW
B G Gunn, T Z Baram
Stress is a major trigger of seizures in people with epilepsy. Exposure to stress results in the release of several stress mediators throughout the brain, including the hippocampus, a region sensitive to stress and prone to seizures. Stress mediators interact with their respective receptors to produce distinct effects on the excitability of hippocampal neurons and networks. Crucially, these stress mediators and their actions exhibit unique spatiotemporal profiles, generating a complex combinatorial output with time- and space-dependent effects on hippocampal network excitability and seizure generation...
September 12, 2017: Trends in Neurosciences
https://www.readbyqxmd.com/read/28915518/-primary-care-in-germany-equal-access-for-everyone
#18
Jan Bauer, Werner Maier, Ruth Müller, David A Groneberg
Background Access to primary care plays an important role in medical care provision in Germany. Therefore, current health care planning aims at providing equal access for every patient in Germany no matter where they live. Objective This study examined accessibility of primary care and compared the result with current primary care planning data. Materials and Methods Spatial accessibility to primary care was measured by the integrated Floating Catchment Area method ("accessibility index") using a geographical information system at the level of square kilometers cells (hectare grid cells for major urban areas)...
September 15, 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28915035/photoelectrochemistry-of-photosystem-ii-in-vitro-vs-in-vivo
#19
Jenny Z Zhang, Paolo Bombelli, Katarzyna P Sokol, Andrea Fantuzzi, A William Rutherford, Christopher J Howe, Erwin Reisner
Factors governing the photoelectrochemical output of photosynthetic microorganisms are poorly understood, which can lead to energy losses through inefficient electron transfer (ET) processes. Here, we systematically compare the photoe-lectrochemistry of photosystem II (PSII) protein-films to cyano-bacteria biofilms to derive: (i) the losses in light-to-charge con-version efficiencies, (ii) gains in photocatalytic longevity, and (iii) insights into the ET mechanism at the biofilm interface. This study was enabled by the use of hierarchically structured elec-trodes, which could be tailored for high/stable loadings of PSII core complexes and Synechocystis sp...
September 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28914921/truly-unentangled-photon-pairs-without-spectral-filtering
#20
Z Vernon, M Menotti, C C Tison, J A Steidle, M L Fanto, P M Thomas, S F Preble, A M Smith, P M Alsing, M Liscidini, J E Sipe
We demonstrate that an integrated silicon microring resonator is capable of efficiently producing photon pairs that are completely unentangled; such pairs are a key component of heralded single-photon sources. A dual-channel interferometric coupling scheme can be used to independently tune the quality factors associated with the pump and signal and idler modes, yielding a biphoton wavefunction with a Schmidt number arbitrarily close to unity. This will permit the generation of heralded single-photon states with unit purity...
September 15, 2017: Optics Letters
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