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https://www.readbyqxmd.com/read/29471537/the-c-terminal-helix-of-ribosomal-p-stalk-recognizes-a-hydrophobic-groove-of-elongation-factor-2-in-a-novel-fashion
#1
Takehito Tanzawa, Koji Kato, Dylan Girodat, Toyoyuki Ose, Yuki Kumakura, Hans-Joachim Wieden, Toshio Uchiumi, Isao Tanaka, Min Yao
Archaea and eukaryotes have ribosomal P stalks composed of anchor protein P0 and aP1 homodimers (archaea) or P1•P2 heterodimers (eukaryotes). These P stalks recruit translational GTPases to the GTPase-associated center in ribosomes to provide energy during translation. The C-terminus of the P stalk is known to selectively recognize GTPases. Here we investigated the interaction between the P stalk and elongation factor 2 by determining the structures of Pyrococcus horikoshii EF-2 (PhoEF-2) in the Apo-form, GDP-form, GMPPCP-form (GTP-form), and GMPPCP-form bound with 11 C-terminal residues of P1 (P1C11)...
February 20, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29471524/enteric-methane-production-and-ruminal-fermentation-of-forage-brassica-diets-fed-in-continuous-culture
#2
S Leanne Dillard, Ana I Roca-Fernández, Melissa D Rubano, Kyle R Elkin, Kathy J Soder
The aim of the current study was to determine nutrient digestibility, VFA production, N metabolism, and CH4 production of canola (Brassica napus L.), rapeseed (B. napus L.), turnip (B. rapa L.), and annual ryegrass (Lolium multiflorum Lam.) fed with orchardgrass (Dactylis glomerata L.) in continuous culture. Diets were randomly assigned to fermentors in a 4 × 4 Latin square design using 7 d for adaptation and 3 d for collection. Diets were: 1) 50% orchardgrass + 50% annual ryegrass (ARG); 2) 50% orchardgrass + 50% canola (CAN); 3) 50% orchardgrass + 50% rapeseed (RAP); and 4) 50% orchardgrass + 50% turnip (TUR)...
February 17, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29471490/pharmacologic-assessment-of-bovine-ruminal-and-mesenteric-vascular-serotonin-receptor-populations
#3
M A Snider, D L Harmon, J L Klotz
Prior work using a contractility bioassay determined that the serotonin (5-HT) receptor subtype 5-HT2A is present in bovine lateral saphenous veins and plays a role in ergot alkaloid-induced vascular contraction in steers grazing endophyte-infected (Epichloë coenophiala) tall fescue (Lolium arundinaceum). Ergot alkaloids have also been shown to be vasoactive in bovine gut vasculature. To determine what 5-HT receptors are involved in vasoconstriction of gut vasculature, contractility of ruminal and mesenteric arteries and veins collected from cattle were evaluated in the presence of agonists selective for 5-HT1B (CP 93129) 5-HT1D (L-694, 247), 5-HT2A (TCB-2), 5-HT2B (BW 723C86), 5-HT4 (BIMU-8) and 5-HT7 (LP 44) receptors...
February 17, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29471477/feasibility-of-smartphone-application-and-social-media-intervention-on-breast-cancer-survivors-health-outcomes
#4
Zachary Pope, Jung Eun Lee, Nan Zeng, Hee Yun Lee, Zan Gao
Breast cancer survivors are at risk for poor health, with physical activity a possible treatment. Little research has examined how technology might promote breast cancer survivor physical activity or health. The aim of this study is to investigate the feasibility of employing a commercially available mobile health application- and social media-based health education intervention to improve breast cancer survivor physical activity or health.Ten breast cancer survivors (X̅ age = 45.80 ± 10.23 years; X̅ weight = 79...
February 17, 2018: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/29471467/myeloperoxidase-influences-the-complement-regulatory-activity-of-complement-factor-h
#5
Su-Fang Chen, Feng-Mei Wang, Zhi-Ying Li, Feng Yu, Min Chen, Ming-Hui Zhao
Objective: The interaction between neutrophils and activation of alternative complement pathway plays a critical role in the pathogenesis of ANCA-associated vasculitis (AAV). MPO, which can be released from ANCA-stimulated neutrophils, was recently demonstrated to be capable of activating the alternative complement pathway. Here we aimed to investigate the interaction between MPO and factor H (FH), a key regulator of the alternative pathway, and its effect on the functional activities of FH...
February 19, 2018: Rheumatology
https://www.readbyqxmd.com/read/29471453/modified-minimally-invasive-transforaminal-lumbar-interbody-fusion-technique-can-potentially-improve-safety-of-interbody-graft-placement
#6
Khalid H Kurtom, Wendy S Towers
BACKGROUND: Minimally invasive transforaminal lumbar interbody fusion (MITLIF) is a well-described procedure with excellent reported outcomes. A modification of interbody graft placement can potentially improve the ease and safety of this procedure. OBJECTIVE: To describe a modification of the MITLIF graft placement and retrospectively review our experience including intraoperative and postoperative complications. METHODS: Single surgeon, single institution, retrospective analysis of consecutive patients who underwent a modified MITLIF technique between November 2011 and December 2013...
February 16, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29471396/involvement-of-epigenetic-modifications-of-gabaergic-interneurons-in-basolateral-amygdala-in-anxiety-like-phenotype-of-prenatally-stressed-mice
#7
Chunting Zhu, Min Liang, Yingchun Li, Xuejiao Feng, Juan Hong, Rong Zhou
Background: Prenatal stress is considered a risk factor for anxiety disorder. Downregulation in the expression of GABAergic gene, that is, glutamic acid decarboxylase 67, associated with DNA methyltransferase overexpression in GABAergic neurons has been regarded as a characteristic component of anxiety disorder. Prenatal stress has an adverse effect on the development of the basolateral amygdala, which is a key region in anxiety regulation. The aim of this study is to analyze the possibility of epigenetic alterations of GABAergic neurons in the basolateral amygdala participating in prenatal stress-induced anxiety...
February 20, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29471290/presence-of-kidney-disease-as-an-outcome-predictor-in-patients-with-pulmonary-arterial-hypertension
#8
Laurent Bitker, Florence Sens, Cécile Payet, Ségolène Turquier, Antoine Duclos, Vincent Cottin, Laurent Juillard
BACKGROUND: Pulmonary arterial hypertension (PAH) may lead to right heart failure and subsequently alter glomerular filtration rates (GFR). Chronic kidney disease (CKD, GFR <60 mL/min/1.73 m2) may also adversely affect PAH prognosis. This study aimed to assess how right heart hemodynamics was associated with reduced estimated GFR (eGFR) and the association of CKD with survival in PAH patients. METHODS: In a prospective PAH cohort (2003-2012), invasive hemodynamics and eGFR were collected at diagnosis (179 patients) and during follow-up (159 patients)...
February 22, 2018: American Journal of Nephrology
https://www.readbyqxmd.com/read/29471281/theoretical-and-experimental-study-for-the-biomimetic-recognition-of-levothyroxine-hormone-on-magnetic-molecularly-imprinted-polymer
#9
Silio Lima Moura, Laura Martinez Fajardo, Leonardo Dos Anjos Cunha, Maria Del Pilar Taboada Sotomayor, Francisco Bolivar Correto Machado, Luiz Fernando Araújo Ferrão, Maria Isabel Pividori
This study addresses the rational design of a magnetic molecularly imprinted polymer (magnetic-MIP) for the selective recognition of the hormone levothyroxine. The theoretical study was carried out by the density functional theory (DFT) computations considering dispersion interaction energies, and using the D2 Grimme's correction. The B97-D/def2-SV(P)/PCM method is used not only for studying the structure of the template the and monomer-monomer interactions, but also to assess the stoichiometry, noncovalent binding energies, solvation effects and thermodynamics properties such as binding energy...
January 31, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29471270/validation-of-time-to-task-performance-assessment-method-in-simulation-a-comparative-design-study
#10
Mary Ann Shinnick, Mary A Woo
BACKGROUND: There is a lack of objective and valid measures for assessing nursing clinical competence which could adversely impact patient safety. Therefore, we evaluated an objective assessment of clinical competence, Time to Task (ability to perform specific, critical nursing care activities within 5 min), and compared it to two subjective measures, (Lasater Clinical Judgement Rubric [LCJR] and common "pass/fail" assessment). DESIGN/METHODS: Using a prospective, "Known Groups" (Expert vs...
February 12, 2018: Nurse Education Today
https://www.readbyqxmd.com/read/29471267/the-effectiveness-of-traditional-chinese-medicine-based-lifestyle-interventions-on-biomedical-psychosocial-and-behavioral-outcomes-in-individuals-with-type-2-diabetes-a-systematic-review-with-meta-analysis
#11
REVIEW
Xingfeng Yu, Janita P C Chau, Lanting Huo
BACKGROUND: Integrative diabetes care, which combines conventional diabetes therapy with traditional Chinese medicine (TCM)-based interventions, has gained popularity worldwide. Numerous TCM-based lifestyle modification approaches have been proposed for individuals with type 2 diabetes (T2DM). OBJECTIVES: To synthesize and present the best available evidence on the effectiveness of TCM-based lifestyle interventions in individuals with T2DM. DESIGN: We undertook a systematic review of randomized controlled trials or controlled clinical trials...
February 19, 2018: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/29471254/uplc-ms-ms-assay-validation-for-tacrolimus-quantitative-determination-in-peripheral-blood-t-cd4-and-b-cd19-lymphocytes
#12
Paschoalina Romano, Maria da Luz Fernandes, Pérsio de Almeida Rezende Ebner, Nayara Duarte de Oliveira, Larissa Mitsue Okuda, Fabiana Agena, Maria Elizabete Mendes, Nairo Massakazu Sumita, Verônica Coelho, Elias David-Neto, Nelson Zocoler Galante
Monitoring tacrolimus (Tac) exposure in cell matrices enriched with lymphocytes can improve Tac therapeutic drug monitoring (TDM) in solid organ transplant recipients. An UPLC-MS/MS based assay for Tac quantification in peripheral blood T CD4+ and B CD19+ lymphocytes was developed. Peripheral blood mononuclear cells (PBMC) were obtained by density gradient centrifugation and highly purified (purity >90%) T CD4+ and B CD19+ cell suspensions were acquired by magnetic negative selection from whole blood of 6 healthy volunteers...
January 5, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29471249/post-mortem-biochemistry-of-nse-and-s100b-a-supplemental-tool-for-detecting-a-lethal-traumatic-brain-injury
#13
Monique Sieber, Jan Dreßler, Heike Franke, Dirk Pohlers, Benjamin Ondruschka
PURPOSE: Traumatic brain injury (TBI) is a very common entity that leads to numerous fatalities all over the world. Therefore, forensic pathologists are in desperate need of supplemental methodological tools for the diagnosis of TBI in everyday practice besides the standard autopsy. The present study determined post-mortem neuron specific enolase (NSE) and S100 calcium-binding protein B (S100B) levels as biological markers of an underlying TBI in autopsy cases. METHODS: Paired serum and CSF samples of 92 fatalities were collected throughout routine autopsies...
February 14, 2018: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29471232/changes-in-pro-inflammatory-cytokine-levels-and-late-life-depression-a-two-year-population-based-longitudinal-study
#14
Jae-Min Kim, Robert Stewart, Ju-Wan Kim, Hee-Ju Kang, Kyung-Yeol Bae, Sung-Wan Kim, Il-Seon Shin, Jin-Sang Yoon
Longitudinal associations of cytokine levels with depression are unclear. This study aimed to investigate cross-sectional and prospective associations between five serum pro-inflammatory cytokine levels and late-life depression. 732 Korean people aged 65+ were evaluated at baseline. Of 631 without depression (Geriatric Mental State schedule) at baseline, 521 (83%) were followed over a 2 year period and incident depression was ascertained. Serum tumor necrosis factor-α, interleukin (IL)-1α, IL-1β, IL-6, and IL-8 levels were assayed at both baseline and follow-up...
February 14, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29471224/quantification-of-desoxyrhapontigenin-4-methoxyresveratrol-in-rat-plasma-by-lc-ms-ms-application-to-pre-clinical-pharmacokinetic-study
#15
Yu Dai, Amanda Li Cheng Tan, Huan Chen, Pei Shi Ong, Xiaoqiang Xiang, Jinzhu Wu, Hai-Shu Lin
Desoxyrhapontigenin (DRG, 4-methoxyresveratrol or trans-3,5-dihydroxy-4'-methoxystilbene) is a naturally occurring resveratrol (RES) derivative with a variety of biological activities. To facilitate its further medicinal exploration, a reliable LC-MS/MS method was developed and validated for the quantification of DRG in rat plasma using heavy isotope labelled RES as an internal standard. The ESI was operated in its negative ion mode while DRG and RES were determined by multiple reaction monitoring (MRM) using precursor-to-product ion transitions of m/z 241...
February 13, 2018: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29471219/the-effects-of-extrinsic-factors-on-the-structural-and-mechanical-properties-of-pseudomonas-fluorescens-biofilms-a-combined-study-of-nutrient-concentrations-and-shear-conditions
#16
Ashley Allen, Olivier Habimana, Eoin Casey
The growth of biofilms on surfaces is a complicated process influenced by several environmental factors such as nutrient availability and fluid shear. In this study, combinations of growth conditions were selected for the study of Pseudomonas fluorescens biofilms including as cultivation time (24- or 48 h), nutrient levels (1:1 or 1:10 King B medium), and shear conditions (75 RPM shaking, 0.4 mL min-1 or 0.7 mL min-1 ). The use of Confocal Laser Scanning Microscopy (CLSM) determined biofilm structure, while liquid-phase Atomic Force Microscopy (AFM) techniques resolved the mechanical properties of biofilms...
February 15, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29471218/albumin-covered-lipid-nanocapsules-exhibit-enhanced-uptake-performance-by-breast-tumor-cells
#17
F Galisteo-González, J A Molina-Bolívar, S A Navarro, H Boulaiz, A Aguilera-Garrido, A Ramírez, J A Marchal
Liquid lipid nanocapsules (LLN) represent a promising new generation of drug-delivery systems. They can carry hydrophobic drugs in their oily core, but the composition and structure of the surrounding protective shell determine their capacity to survive in the circulatory system and to achieve their goal: penetrate tumor cells. Here, we present a study of LLN covered by the protein human serum albumin (HSA) and loaded with curcumin as a hydrophobic model drug. A cross-linking procedure was performed to further strengthen the protective protein layer...
February 13, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29471207/locomotive-function-and-quality-of-life-among-older-people-in-liaoning-china-falls-efficacy-as-mediator-or-moderator
#18
Li-Jie Huang, You-Feng Wen, Yong-Chuang Liu, Li-Na Guo, Wen-Ting Du, Min-Min Qin, Jing-Jing Zhang, Kun Liu
OBJECTIVES: This study aimed to examine the role of falls efficacy in the relationship between the locomotive function and quality of life. METHODS: From March to May in 2016, we conducted a cross-sectional survey among 830 community residents aged ≥60 years from Jinzhou,China.GLFS-25 (25-question Geriatric Locomotive Function Scale), FES-I(International edition of Falls Efficacy Scale),and SF-12 (12-item Short Form Health Survey) were used to estimate locomotive function, falls efficacy and quality of life, respectively...
February 9, 2018: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/29471204/fabrication-of-a-solution-gated-transistor-based-on-valinomycin-modified-iron-oxide-nanoparticles-decorated-zinc-oxide-nanorods-for-potassium-detection
#19
Min-Sang Ahn, Rafiq Ahmad, Kiesar Sideeq Bhat, Jin-Young Yoo, Tahmineh Mahmoudi, Yoon-Bong Hahn
There are considerable interests to detect and monitor the abnormal level of minerals in water for avoiding/preventing any toxic effects after consumption. Herein, we report the fabrication of solution-gated field-effect-transistor (FET) based potassium sensor using iron oxide nanoparticles (Fe2 O3 NPs) modified directly grown zinc oxide nanorods (ZnO NRs). The Fe2 O3 NPs modification of ZnO NRs provided stability to nanorods surface and improved surface area for valinomycin immobilization. As-fabricated potassium sensor (valinomycin-Fe2 O3 NPs-ZnO NRs/SiO2 /Si) provided enhanced current response with increasing potassium concentration...
February 14, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29471197/extracting-cardiac-dynamics-within-ecg-signal-for-human-identification-and-cardiovascular-diseases-classification
#20
Muqing Deng, Cong Wang, Min Tang, Tongjia Zheng
Cardiac characteristics underlying the time/frequency domain features are limited and not comprehensive enough to reflect the temporal/dynamical nature of ECG patterns. This paper proposes a dynamical ECG recognition framework for human identification and cardiovascular diseases classification via a dynamical neural learning mechanism. The proposed method consists of two phases: a training phase and a test phase. In the training phase, cardiac dynamics within ECG signals is extracted (approximated) accurately by using radial basis function (RBF) neural networks through deterministic learning mechanism...
January 31, 2018: Neural Networks: the Official Journal of the International Neural Network Society
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