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Functional morphology

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https://www.readbyqxmd.com/read/27926680/humeral-retroversion-in-children-with-shoulder-internal-rotation-contractures-secondary-to-upper-trunk-neonatal-brachial-plexus-palsy
#1
Michael L Pearl, Michael Batech, Fabian van de Bunt
BACKGROUND: The most common sequela of neonatal brachial plexus palsy is an internal rotation contracture of the shoulder that impairs function and leads to skeletal deformation of the glenohumeral joint. Treatment options include release, transfers, and humeral osteotomy, all ultimately striving for better function through increased external rotation. Prior studies have shown that neonatal brachial plexus palsy alters humeral retroversion but with conflicting findings. We studied retroversion in children with internal rotation contractures from neonatal brachial plexus palsy to clarify its effect on version and surgical planning...
December 7, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27926579/the-influence-of-coronary-plaque-morphology-assessed-by-optical-coherence-tomography-on-final-microvascular-function-after-stenting-in-patients-with-st-elevation-myocardial-infarction
#2
Giovanni L De Maria, Niket Patel, Mathias Wolfrum, Gregor Fahrni, George Kassimis, Italo Porto, Sam Dawkins, Robin P Choudhury, John C Forfar, Bernard D Prendergast, Keith M Channon, Rajesh K Kharbanda, Hector M Garcia-Garcia, Adrian P Banning
OBJECTIVES: The index of microcirculatory resistance (IMR) provides a reproducible assessment of the status of coronary microvasculature in patients with ST-elevation myocardial infarction (STEMI). Frequency-domain optical coherence tomography (FD-OCT) enables detailed assessment of the morphology of coronary plaque.We sought to determine the influence of the initial culprit coronary plaque anatomy within the infarct-related artery on IMR after stenting in STEMI. PATIENTS AND METHODS: In 25 STEMI patients IMR was measured immediately before and after stent implantation...
December 6, 2016: Coronary Artery Disease
https://www.readbyqxmd.com/read/27925682/influence-of-morphology-and-pbi%C3%A2-on-the-intrinsic-trap-state-distribution-in-perovskite-film-determined-by-temperature-dependent-fluorescence-spectroscopy
#3
Yi Wang, Hao-Yi Wang, Man Yu, Li-Min Fu, Yujun Qin, Jian-Ping Zhang, Xi-Cheng Ai
Perovskite films with different particle sizes and PbI₂ contents are prepared by controlled single- or sequential-method. By means of temperature dependent fluorescence spectroscopy, the energetic distribution of intrinsic intra-gap trap states in perovskite is quantitatively determined, and the radiative charge recombinations through band edge and via trap states are respectively studied. Furthermore, a series of thermodynamics parameters, such as the demarcation energy between radiative and non-radiative recombination regions, detrapping activation energy and characteristic temperature, are extracted out, based on which, the possible radiative and non-radiative recombination mechanisms are proposed...
December 7, 2016: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/27925400/hydrothermal-carbon-enriched-with-oxygenated-groups-from-biomass-glucose-as-an-efficient-carbocatalyst
#4
Guodong Wen, Bolun Wang, Congxin Wang, Jia Wang, Zhijian Tian, Robert Schlögl, Dang Sheng Su
Metal-free carbocatalysts enriched with specific oxygenated groups with different morphology and size were synthesized from glucose by hydrothermal carbonization, in which cheap and widely available biomass could be converted into functionalized carbon using an environmentally benign process. The hydroxy- and carbonyl-enriched hydrothermal carbon (HTC) could be used in nitrobenzene reduction, and higher conversion was obtained on the sphere morphology with smaller size. In the Beckmann rearrangement of cyclohexanone oxime, carboxyl-enriched HTC exhibited superior performance compared with conventional solid acid (such as HY and HZSM-5), on which the strong acid sites and weak Lewis acid sites lead to high selectivity for the side product...
December 7, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27925389/the-long-term-immunological-effects-of-alloferon-and-its-analogues-in-the-mealworm-tenebrio-molitor
#5
Elżbieta Czarniewska, Arkadiusz Urbański, Szymon Chowański, Mariola Kuczer
The subject of this paper is a search for the long-term immunological effects of alloferon and 3 structural analogues of alloferon, which were earlier characterised by the highest pro-apoptotic activity in Tenebrio molitor. The differences in the actions of these peptides on immune response were observed. Alloferon increased nodulation and significantly phenoloxidase activity in the haemolymph of experimentally infected T. molitor. However, [Phe(p-NH2 )(1) ]- and [Phe(p-OMe)(1) ]-alloferon strongly inhibited cellular and humoral defense of the mealworm against Staphylococcus aureus infection...
December 7, 2016: Insect Science
https://www.readbyqxmd.com/read/27924582/modeling-rasopathies-with-genetically-modified-mouse-models
#6
Isabel Hernández-Porras, Carmen Guerra
The RAS/MAPK signaling pathway plays key roles in development, cell survival and proliferation, as well as in cancer pathogenesis. Molecular genetic studies have identified a group of developmental syndromes, the RASopathies, caused by germ line mutations in this pathway. The syndromes included within this classification are neurofibromatosis type 1 (NF1), Noonan syndrome (NS), Noonan syndrome with multiple lentigines (NS-ML, formerly known as LEOPARD syndrome), Costello syndrome (CS), cardio-facio-cutaneous syndrome (CFC), Legius syndrome (LS, NF1-like syndrome), capillary malformation-arteriovenous malformation syndrome (CM-AVM), and hereditary gingival fibromatosis (HGF) type 1...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924579/reconstructing-erk-signaling-in-the-drosophila-embryo-from-fixed-images
#7
Bomyi Lim, Carmeline J Dsilva, Ioannis G Kevrekidis, Stanislav Y Shvartsman
The early Drosophila embryo provides unique opportunities for quantitative studies of ERK signaling. This system is characterized by simple anatomy, the ease of obtaining large numbers of staged embryos, and the availability of powerful tools for genetic manipulation of the ERK pathway. Here, we describe how these experimental advantages can be combined with recently developed microfluidic devices for high throughput imaging of ERK activation dynamics. We focus on the stage during the third hour of development, when ERK activation is essential for patterning of the future nerve cord...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27924307/dendrites-and-pits-untangling-the-complex-behavior-of-lithium-metal-anodes-through-operando-video-microscopy
#8
Kevin N Wood, Eric Kazyak, Alexander F Chadwick, Kuan-Hung Chen, Ji-Guang Zhang, Katsuyo Thornton, Neil P Dasgupta
Enabling ultra-high energy density rechargeable Li batteries would have widespread impact on society. However the critical challenges of Li metal anodes (most notably cycle life and safety) remain unsolved. This is attributed to the evolution of Li metal morphology during cycling, which leads to dendrite growth and surface pitting. Herein, we present a comprehensive understanding of the voltage variations observed during Li metal cycling, which is directly correlated to morphology evolution through the use of operando video microscopy...
November 23, 2016: ACS Central Science
https://www.readbyqxmd.com/read/27924296/data-in-support-of-covalent-attachment-of-tyrosinase-onto-cyanuric-chloride-crosslinked-magnetic-nanoparticles
#9
Kourosh Abdollahi, Farshad Yazdani, Reza Panahi
Preparation and characterization of cross linked amine-functionalized magnetic nanoparticles as an appropriate support for covalent immobilization on tyrosinase was presented in the study "Covalent immobilization of tyrosinase onto cyanuric chloride crosslinked amine-functionalized superparamagnetic nanoparticles: synthesis and characterization of the recyclable nanobiocatalyst" (Abdollahi et al., 2016 ) [1]. Herein, complementary data regarding X-ray powder diffraction (XRD) to characterize the synthesized magnetic nanoparticles, and transmission electron microscopy (TEM) to determine the size and morphology of tyrosinase immobilized magnetic nanoparticles (tyrosinase-MNPs) were reported...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27924174/feasibility-study-of-computational-fluid-dynamics-simulation-of-coronary-computed-tomography-angiography-based-on-dual-source-computed-tomography
#10
Jing Lu, Jie Yu, Heshui Shi
BACKGROUND: Adding functional features to morphological features offers a new method for non-invasive assessment of myocardial perfusion. This study aimed to explore technical routes of assessing the left coronary artery pressure gradient, wall shear stress distribution and blood flow velocity distribution, combining three-dimensional coronary model which was based on high resolution dual-source computed tomography (CT) with computational fluid dynamics (CFD) simulation. METHODS: Three cases of no obvious stenosis, mild stenosis and severe stenosis in left anterior descending (LAD) were enrolled...
January 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/27924044/plamom-a-comprehensive-database-compiles-plant-mobile-macromolecules
#11
Daogang Guan, Bin Yan, Christoph Thieme, Jingmin Hua, Hailong Zhu, Kenneth R Boheler, Zhongying Zhao, Friedrich Kragler, Yiji Xia, Shoudong Zhang
In plants, various phloem-mobile macromolecules including noncoding RNAs, mRNAs and proteins are suggested to act as important long-distance signals in regulating crucial physiological and morphological transition processes such as flowering, plant growth and stress responses. Given recent advances in high-throughput sequencing technologies, numerous mobile macromolecules have been identified in diverse plant species from different plant families. However, most of the identified mobile macromolecules are not annotated in current versions of species-specific databases and are only available as non-searchable datasheets...
October 24, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27923976/early-restriction-of-placental-growth-results-in-placental-structural-and-gene-expression-changes-in-late-gestation-independent-of-fetal-hypoxemia
#12
Song Zhang, Paige Barker, Kimberley J Botting, Claire T Roberts, Christine M McMillan, Isabella Caroline McMillen, Janna L Morrison
Placental restriction and insufficiency are associated with altered patterns of placental growth, morphology, substrate transport capacity, growth factor expression, and glucocorticoid exposure. We have used a pregnant sheep model in which the intrauterine environment has been perturbed by uterine carunclectomy (Cx). This procedure results in early restriction of placental growth and either the development of chronic fetal hypoxemia (PaO2≤17 mmHg) in late gestation or in compensatory placental growth and the maintenance of fetal normoxemia (PaO2>17 mmHg)...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/27923786/retinal-microvascular-network-alterations-potential-biomarkers-of-cerebrovascular-and-neural-diseases
#13
Delia Cabrera DeBuc, Gabor Mark Somfai, Akos Koller
Increasing evidence suggests that the conditions of retinal microvessels are indicators to a variety of cerebrovascular, neurodegenerative, psychiatric and developmental diseases. Thus, non-invasive visualization of the human retinal microcirculation offers an exceptional opportunity for the investigation of not only the retinal but also cerebral microvasculature. In this review, we show how the conditions of the retinal microvessels could be used to assess the conditions of brain microvessels because of the microvascular network of the retina and brain share in many aspects standard features in development, morphology, function and pathophysiology...
December 6, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27923690/dicranostiga-leptopodu-maxim-fedde-extracts-attenuated-ccl4-induced-acute-liver-damage-in-mice-through-increasing-anti-oxidative-enzyme-activity-to-improve-mitochondrial-function
#14
Deping Tang, Fang Wang, Jinzhou Tang, Aihong Mao, Shiqi Liao, Qin Wang
Dicranostiga Leptodu (Maxim.) fedde (DLF), a poppy plant, has been reported have many benefits and medicinal properties, including free radicals scavenging and detoxifying. However, the protective effect of DLF extracts against carbon tetrachloride (CCl4)-induced damage in mice liver has not been elucidated. Here, we demonstrated that DLF extracts attenuated CCl4-induced liver damage in mice through increasing anti-oxidative enzyme activity to improve mitochondrial function. In this study, the mice liver damage evoked by CCl4 was marked by morphology changes, significant rise in lipid peroxidation, as well as alterations of mitochondrial respiratory function...
December 3, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27923632/puerarin-suppression-of-a%C3%AE-1-42-induced-primary-cortical-neuron-death-is-largely-dependent-on-er%C3%AE
#15
Li Li, Zuguang Xue, Lei Chen, Xueyu Chen, Heshuang Wang, Xiaobo Wang
Recent study has suggested that estrogen replacement therapy (ERT) can decrease the risk of the development of Alzheimer's disease (AD), and phytoestrogen has been proposed as a potential alternative to ERT. In this study, we investigated the protective function of puerarin (a phytoestrogen isolated from puerarin lobate) against amyloid beta (Aβ1-42)-induced toxicity in cortical neurons and established the connection between such a protection and estrogen receptor (ER) activation. Puerarin suppressed Aβ1-42-induced cortical neuron death in a concentration-dependent manner...
December 3, 2016: Brain Research
https://www.readbyqxmd.com/read/27923607/stimulatory-effect-and-adsorption-behavior-of-rhamnolipids-on-lignocelluloses-degradation-system
#16
Jinju Hou, Shudong Zhang, Zhen Qiu, Hui Han, Qiuzhuo Zhang
Di-rhamnolipid and mixed rhamnolipid were added to rice straw degrading system to investigate their mechanism of stimulatory effect. By batch adsorption experiments, it was shown that the equilibrium adsorption time of rhamnolipids on rice straw single system was the shortest (50min). The adsorption capacity of Trichoderma reesei single system was the strongest, whose Qe,exp for di-rhamnolipid and mixed rhamnolipid was 10.57×10(-2)mg·g(-1) and 8.13×10(-2)mg·g(-1), respectively. The adsorption of rhamnolipids on consortia system was not the simple adduct of the two single systems...
November 29, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27923145/aging-and-behavior-of-functional-tio2-nanoparticles-in-aqueous-environment
#17
Huiting Lu, Haifeng Dong, Wenhong Fan, Jinxing Zuo, Xiaomin Li
Nanoparticles are usually functionalized with various surface capping moieties in practical applications. Understand the behavior and fate of them is critical to evaluate or even predict their risk to environment. However, little attention has been denoted on this issue until now. Using three commercial TiO2 nanoparticles with different capping moieties, their aging procedures and corresponding change as well as their byproducts were systematically studied. Comprehensive microscopic and spectrometric measurements demonstrated a capping agent-dependent with the aging procedure...
November 6, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27923138/metallogel-templated-synthesis-and-stabilization-of-silver-particles-and-its-application-in-catalytic-reduction-of-nitro-arene
#18
Mukesh Sharma, Plaban Jyoti Sarma, Manash Jyoti Goswami, Kusum K Bania
Metallogel of iron-carboxylates was obtained from trans-1,2-cyclohexanedicarboxylic acid in dimethylformamide (DMF) at basic condition. Spectroscopic and SEM morphology study of the iron-metallogel revealed that the iron complex with dicarboxylic acid was linked together via carboxylates and led to a supramolecular helical like architecture. The synthesized metallogel served as an excellent template for in-situ reduction of silver ion to silver particles micro to nano scale range. Variation of AgNO3 concentration shepherd to change the morphology of the Ag-particles...
November 20, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27922833/x-ray-photoelectron-spectroscopy-and-transmission-electron-microscopy-analysis-of-silver-coated-gold-nanorods-designed-for-bionanotechnology-applications
#19
Fumiya Watanabe, Zeid A Nima, Takumi Honda, Masatoshi Mitsuhara, Minoru Nishida, Alexandru S Biris
Multicomponent nano-agents were designed and built via a core-shell approach to enhance their surface enhanced Raman scattering (SERS) signals. These nano-agents had 36 nm × 12 nm gold nanorod cores coated by 4 nm thick silver shell films and a subsequent thin bifunctional thiolated polyethylene glycol (HS-PEG-COOH) layer. Ambient time-lapsed SERS signal measurements of these functionalized nanorods taken over a two-week period indicated no signal degradation, suggesting that large portions of the silver shells remained in pure metallic form...
December 6, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27922736/phosphate-ion-functionalized-co3-o4-ultrathin-nanosheets-with-greatly-improved-surface-reactivity-for-high-performance-pseudocapacitors
#20
Teng Zhai, Liming Wan, Shuo Sun, Qi Chen, Jiao Sun, Qiuying Xia, Hui Xia
A surface-modified Co3 O4 ultrathin nanosheet (denoted as PCO) is reported via controllable phosphate ion functionalization for pseudocapacitors. An energy density of 71.6 Wh kg(-1) (at 1500 W kg(-1) ) is achieved by the PCO-based pseudocapacitor. The unique porous nanosheet morphology, high surface reactivity and fast electrode kinetics of PCO are found to be responsible for the enhanced pseudocapacitive performance.
December 6, 2016: Advanced Materials
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