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https://www.readbyqxmd.com/read/28743040/prenatal-exposure-to-organophosphorus-pesticides-and-childhood-neurodevelopmental-phenotypes
#1
Melissa A Furlong, Amy Herring, Jessie P Buckley, Barbara D Goldman, Julie L Daniels, Lawrence S Engel, Mary S Wolff, Jia Chen, Jim Wetmur, Dana Boyd Barr, Stephanie M Engel
Prenatal exposure to organophosphorus pesticides (OPs) has been associated with different neurodevelopmental outcomes across different cohorts. A phenotypic approach may address some of these differences by incorporating information across scales and accounting for the complex correlational structure of neurodevelopmental outcomes. Additionally, Bayesian hierarchical modeling can account for confounding by collinear co-exposures. We use this framework to examine associations between prenatal exposure to OPs and behavior, executive functioning, and IQ assessed at age 6-9 years in a cohort of 404 mother/infant pairs recruited during pregnancy...
July 22, 2017: Environmental Research
https://www.readbyqxmd.com/read/28742993/performance-and-return-to-sport-after-achilles-tendon-repair-in-national-football-league-players
#2
Robert A Jack, Kyle R Sochacki, Stephanie S Gardner, Patrick C McCulloch, David M Lintner, Pedro E Cosculluela, Kevin E Varner, Joshua D Harris
BACKGROUND: Achilles tendon injuries are common in sports, including football. The purpose of this study was to determine (1) return-to-sport rate in National Football League (NFL) players following Achilles tendon repair, (2) postoperative career length and games per season, (3) pre- and postoperative performance, and (4) postoperative performance compared with control players matched by position, age, years of experience, and performance. METHODS: Publicly available records were used to identify NFL players who underwent Achilles tendon repair and matched controls were identified...
July 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28742866/contribution-of-factor-h-binding-protein-sequence-to-the-cross-reactivity-of-meningococcal-native-outer-membrane-vesicle-vaccines-with-over-expressed-fhbp-variant-group-1
#3
Arianna Marini, Omar Rossi, Maria Grazia Aruta, Francesca Micoli, Simona Rondini, Serafina Guadagnuolo, Isabel Delany, Ian R Henderson, Adam F Cunningham, Allan Saul, Calman A MacLennan, Oliver Koeberling
Factor H-binding protein (fHbp) is an important meningococcal vaccine antigen. Native outer membrane vesicles with over-expressed fHbp (NOMV OE fHbp) have been shown to induce antibodies with broader functional activity than recombinant fHbp (rfHbp). Improved understanding of this broad coverage would facilitate rational vaccine design. We performed a pair-wise analysis of 48 surface-exposed amino acids involved in interacting with factor H, among 383 fHbp variant group 1 sequences. We generated isogenic NOMV-producing meningococcal strains from an African serogroup W isolate, each over-expressing one of four fHbp variant group 1 sequences (ID 1, 5, 9, or 74), including those most common among invasive African meningococcal isolates...
2017: PloS One
https://www.readbyqxmd.com/read/28742859/whole-blood-microrna-expression-may-not-be-useful-for-screening-non-small-cell-lung-cancer
#4
Santosh K Patnaik, Eric D Kannisto, Reema Mallick, Anil Vachani, Sai Yendamuri
At least seven studies have suggested that microRNA levels in whole blood can be diagnostic for lung cancer. We conducted a large bi-institutional study to validate this. Qiagen® PAXgene™ Blood miRNA System was used to collect blood and extract RNA from it for 85 pathologic stage I-IV non-small cell lung cancer (NSCLC) cases and 76 clinically-relevant controls who had a benign pulmonary mass, or a high risk of developing lung cancer because of a history of cigarette smoking or age >60 years. Cases and controls were similar for age, gender, race, and blood hemoglobin and leukocyte but not platelet levels (0...
2017: PloS One
https://www.readbyqxmd.com/read/28742775/estimation-of-stroke-volume-and-stroke-volume-changes-by-electrical-impedance-tomography
#5
Fernando José da Silva Ramos, André Hovnanian, Rogério Souza, Luciano C P Azevedo, Marcelo B P Amato, Eduardo L V Costa
BACKGROUND: Electrical impedance tomography (EIT) is a noninvasive imaging method that identifies changes in air and blood volume based on thoracic impedance changes. Recently, there has been growing interest in EIT to measure stroke volume (SV). The objectives of this study are as follows: (1) to evaluate the ability of systolic impedance variations (ΔZsys) to track changes in SV in relation to a baseline condition; (2) to assess the relationship of ΔZsys and SV in experimental subjects; and (3) to identify the influence of body dimensions on the relationship between ΔZsys and SV...
July 24, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28742695/does-surgeon-sex-matter-practice-patterns-and-outcomes-of-female-and-male-surgeons
#6
Catherine E Sharoky, Morgan M Sellers, Luke J Keele, Christopher J Wirtalla, Giorgos C Karakousis, Jon B Morris, Rachel R Kelz
OBJECTIVE: We sought to compare postoperative outcomes of female surgeons (FS) and male surgeons (MS) within general surgery. SUMMARY OF BACKGROUND DATA: FS in the workforce are increasing in number. Female physicians provide exceptional care in other specialties. Differences in surgical outcomes of FS and MS have not been examined. METHODS: We linked the AMA Physician Masterfile to discharge claims from New York, Florida, and Pennsylvania (2012 to 2013) to examine practice patterns and to compare surgical outcomes of FS and MS...
July 24, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28742347/cationic-and-anionic-impact-on-the-electronic-structure-of-liquid-water
#7
Zhong Yin, Ludger Inhester, Sreevidya Thekku Veedu, Wilson Quevedo, Annette Pietzsch, Philippe Wernet, Gerrit Groenhof, Alexander Foehlisch, Helmut Grubmüller, Simone Agnes Techert
Hydration shells around ions are crucial for many fundamental biological and chemical processes. Their local physico-chemical properties are quite different from bulk water, and hard to probe experimentally. We address this problem by combining soft X-ray spectroscopy using a liquid jet and molecular dynamics (MD) simulations together with ab initio electronic structure calculations to elucidate the water-ion interaction in an MgCl2 solution at the molecular level. Our results reveal that salt ions mainly affect the electronic properties of water molecules in close vicinity and that the oxygen K-edge X-ray emission spectrum of water molecules in the first solvation shell differs significantly from bulk water...
July 25, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28742346/molecular-dynamics-of-double-stranded-xylo-nucleic-acid-xylona
#8
Amutha Ramaswamy, Daryna Smyrnova, Mattheus Froeyen, Mohitosh Maiti, Piet Herdewijn, Arnout Ceulemans
Xylo-nucleic acid (XyloNA) is a synthetic analogue of ribo-nucleic acid (RNA), where the ribose sugar has been replaced by xylose. We present a Molecular Dynamics study of the conformational evolution of XyloNA double strand oligomers derived from A-RNA through the substitution of beta-ᴅ-ribofuranose by beta-ᴅ-xylofuranose and having lengths of 8, 16 and 29 base pairs, using a set of independent all-atom simulations performed at various time scales ranging from 55 to 100 ns, , with one long 500 ns simulation of the 29-mer...
July 25, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28742271/genetic-genealogy-approach-reveals-low-rate-of-extrapair-paternity-in-historical-dutch-populations
#9
Maarten H D Larmuseau, Sofie Claerhout, Leen Gruyters, Kelly Nivelle, Michiel Vandenbosch, Anke Peeters, Pieter van den Berg, Tom Wenseleers, Ronny Decorte
OBJECTIVE: Evolutionary theory has shown that seeking out extrapair paternity (EPP) can be a viable reproductive strategy for both sexes in pair-bonded species, also in humans. As yet, estimates of the contemporary or historical EPP rate in human population are still rare. In the present study, we estimated the historical EPP rate in the Dutch population over the last 400 years and compared the rate with those obtained for other human populations to determine the evolutionary, cultural, and socio-demographic factors that influence human cuckoldry behavior...
July 25, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28742222/disruption-of-the-atp-adenosine-balance-in-cd39-mice-is-associated-with-handling-induced-seizures
#10
Amanda J Lanser, Rafael M Rezende, Stephen Rubino, Paul J Lorello, Dustin J Donnelly, Huixin Xu, Lauren A Lau, Chris G Dulla, Barbara J Caldarone, Simon C Robson, Howard L Weiner
Seizures are due to excessive, synchronous neuronal firing in the brain and are characteristic of epilepsy, the fourth most prevalent neurologic disease. Herein, we report handling-induced and spontaneous seizures in mice deficient of CD39, a cell-surface ATPase highly expressed on microglial cells. CD39(-/-) mice with handling-induced seizures had normal input-output curves and paired-pulse ratio measured from hippocampal slices and lacked microgliosis, astrogliosis or overt cell loss in the hippocampus and cortex...
July 25, 2017: Immunology
https://www.readbyqxmd.com/read/28742097/mrtadfinder-a-network-modularity-based-approach-to-identify-topologically-associating-domains-in-multiple-resolutions
#11
Koon-Kiu Yan, Shaoke Lou, Mark Gerstein
Genome-wide proximity ligation based assays such as Hi-C have revealed that eukaryotic genomes are organized into structural units called topologically associating domains (TADs). From a visual examination of the chromosomal contact map, however, it is clear that the organization of the domains is not simple or obvious. Instead, TADs exhibit various length scales and, in many cases, a nested arrangement. Here, by exploiting the resemblance between TADs in a chromosomal contact map and densely connected modules in a network, we formulate TAD identification as a network optimization problem and propose an algorithm, MrTADFinder, to identify TADs from intra-chromosomal contact maps...
July 24, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28742045/a-multi-class-tactile-brain-computer-interface-based-on-stimulus-induced-oscillatory-dynamics
#12
Lin Yao, Mei Lin Chen, Xinjun Sheng, Natalie Mrachacz-Kersting, Xiangyang Zhu, Dario Farina, Ning Jiang
We proposed a multi-class tactile brain-computer interface that utilizes stimulus-induced oscillatory dynamics. It was hypothesized that somatosensory attention can modulate tactile induced oscillation changes, which can decode different sensation attention tasks. Subjects performed four tactile attention tasks, prompted by cues presented in random order and while both wrists were simultaneously stimulated: 1) selective sensation on left hand (SS-L), 2) selective sensation on right hand (SS-R), 3) bilateral selective sensation (SS-B), and 4) selective sensation suppressed or idle state (SS-S)...
July 24, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28742042/how-do-users-map-points-between-dissimilar-shapes
#13
Michael Hecher, Paul Guerrero, Peter Wonka, Michael Wimmer
Finding similar points in globally or locally similar shapes has been studied extensively through the use of various point descriptors or shape-matching methods. However, little work exists on finding similar points in dissimilar shapes. In this paper, we present the results of a study where users were given two dissimilar two-dimensional shapes and asked to map a given point in the first shape to the point in the second shape they consider most similar. We find that user mappings in this study correlate strongly with simple geometric relationships between points and shapes...
July 24, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28741956/li13mn-seo3-8-lithium-rich-transition-metal-selenite-containing-jahn-teller-distortive-cations
#14
Hongil Jo, Seung Yoon Song, Eunjeong Cho, Jongho So, Suheon Lee, Kwang Yong Choi, Kang Min Ok
A novel lithium-rich transition metal selenite, Li13Mn(SeO3)8, that is composed of a Jahn-Teller distortive cation, Mn(3+), in the high spin d(4) state, and a second-order Jahn-Teller (SOJT) distortive lone pair cation, Se(4+), has been synthesized via hydrothermal and high temperature solid state reactions. The selenite is classified as a molecular compound consisting of MnO6 octahedra, SeO3 trigonal pyramids, and Li(+) cations. Considering the Li-O interactions, the structure of Li13Mn(SeO3)8 may be described as a pseudo-three-dimensional framework as well...
July 25, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28741858/a-computational-approach-for-inferring-the-cell-wall-properties-that-govern-guard-cell-dynamics
#15
Hugh C Woolfenden, Gildas Bourdais, Michaela Kopischke, Eva Miedes, Antonio Molina, Silke Robatzek, Richard J Morris
Guard cells dynamically adjust their shape to regulate photosynthetic gas exchange, respiration rates and defend against pathogen entry. Cell shape changes are determined by the interplay of cell wall material properties and turgor pressure. To investigate this relationship between turgor pressure, cell wall properties and cell shape, we focused on kidney-shaped stomata and developed a biomechanical model of a guard cell pair. Treating the cell wall as a composite of the pectin-rich cell wall matrix embedded with cellulose microfibrils, we show that strong, circumferentially-oriented fibres are critical for opening...
July 25, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28741599/dynamics-and-heat-diffusion-of-abrikosov-s-vortex-antivortex-pairs-during-an-annihilation-process
#16
Elwis Carlos Sartorelli Duarte, Rafael Zadorosny, W A Ortiz, Edson Sardella
The manipulation and control of vortex states in superconducting systems are of great interest in view of possible applications, for which mesoscopic materials are good candidates. In this work, we studied the annihilation dynamics and the dissipative aspects of an Abrikosov's vortex-antivortex pair in a mesoscopic superconducting system with a concentric hole. The time-dependent Ginzburg-Landau equations were numerically solved. The main result is the appearance of a phase slip-like line due to the elongation of the vortex and antivortex cores...
July 25, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28741466/binding-of-cxcr4-transmembrane-peptides-to-the-bacterial-chaperonin-groel
#17
Xiaoqiang Wang, Haixia Chi, Shixin Li, Yan Xu
: Newly translated membrane protein CXCR4 was observed to gain significant folding enhancement upon interacting with the bacterial chaperonin GroEL-GroES. The main fold of CXCR4 consists of 7 transmembrane α-helices distinct from soluble proteins that have dominated research on the chaperonin-assisted folding. This work extends our previous observation to the binding of GroEL with CXCR4 transmembrane peptides, which are mainly composed of hydrophobic residues characteristic of the substrates recognized by the chaperonin...
July 24, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28741438/bilateral-arteriovenous-shunts-as-a-method-for-evaluating-tissue-engineered-vascular-grafts-in-large-animal-models
#18
Chin Siang Ong, Takuma Fukunishi, Rui Han Liu, Kevin Nelson, Huaitao Zhang, Elizabeth Wieczorek, McKenna Palmieri, Yukie Ueyama, Erin Ferris, Gail E Geist, Bradley L Youngblood, Jed Johnson, Narutoshi Hibino
There remains a need for large animal models to evaluate tissue engineered vascular grafts (TEVGs) under arterial pressure to provide preclinical data for future potential human clinical trials. We present a comprehensive method for the interrogation of TEVGs, using an ovine bilateral arteriovenous shunt implantation model. Our results demonstrate that this method can be performed safely without complications, specifically acute heart failure, steal syndrome, and hypoxic brain injury and is a viable experimental paradigm...
July 25, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28741310/homo-and-heteropolymer-self-assembly-of-recombinant-trichocytic-keratins
#19
Rachael N Parker, Kristina L Roth, Christina Kim, Jennifer P McCord, Mark E Van Dyke, Tijana Z Grove
In the past two decades, keratin biomaterials have shown impressive results as scaffolds for tissue engineering, wound healing, and nerve regeneration. In addition to its intrinsic biocompatibility, keratin interacts with specific cell receptors eliciting beneficial biochemical cues. However, during extraction from natural sources, such as hair and wool fibers, natural keratins are subject to extensive processing conditions that lead to formation of unwanted by-products. Additionally, natural keratins suffer from limited sequence tunability...
July 24, 2017: Biopolymers
https://www.readbyqxmd.com/read/28741286/interleukin-6-receptor-il-6r-was-an-independent-prognostic-factor-in-cervical-cancer
#20
Shaohong Luan, Zhijie An, Shuna Bi, Long Chen, Jun Fan
IL-6 has been found to be associated with poor response to chemoradiotherapy and poor overall prognosis of patients with cervical cancer. However, little is known about the clinicopathological significance of IL-6 receptor (IL-6R) expression in the setting of cervical cancer. To investigate the clinicopathological meaning of IL-6R in cervical cancer, expression of IL-6R was detected using immunohistochemistry in cervical cancer tissue microarray composed of 98 cases of cervical cancer and paired normal controls...
July 25, 2017: Histology and Histopathology
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