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https://www.readbyqxmd.com/read/28528417/sea-urchin-embryogenesis-as-bioindicators-of-marine-pollution-in-impact-areas-of-the-sea-of-japan-east-sea-and-the-sea-of-okhotsk
#1
Olga N Lukyanova, Elena V Zhuravel, Denis N Chulchekov, Andrey A Mazur
The embryogenesis of the sea urchin sand dollar Scaphechinus mirabilis was used as bioindicators of seawater quality from the impact areas of the Sea of Japan/East Sea (Peter the Great Bay) and the Sea of Okhotsk (northwestern shelf of Sakhalin Island and western shelf of Kamchatka Peninsula). Fertilization membrane formation, first cleavage, blastula formation, gastrulation, and 2-armed and 4-armed pluteus formation have been analyzed and a number of abnormalities were calculated. Number of embryogenesis anomalies in sand dollar larvae exposed to sea water from different stations in Peter the Great Bay corresponds to pollution level at each area...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28527860/biochemical-principles-and-inhibitors-to-interfere-with-viral-capping-pathways
#2
REVIEW
Etienne Decroly, Bruno Canard
Messenger RNAs are decorated by a cap structure, which is essential for their translation into proteins. Many viruses have developed strategies in order to cap their mRNAs. The cap is either synthetized by a subset of viral or cellular enzymes, or stolen from capped cellular mRNAs by viral endonucleases ('cap-snatching'). Reverse genetic studies provide evidence that inhibition of viral enzymes belonging to the capping pathway leads to inhibition of virus replication. The replication defect results from reduced protein synthesis as well as from detection of incompletely capped RNAs by cellular innate immunity sensors...
May 18, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28527841/a-comparison-of-2-and-3-dimensional-healing-assessment-after-endodontic-surgery-using-cone-beam-computed-tomographic-volumes-or-periapical-radiographs
#3
Tom Schloss, David Sonntag, Meetu R Kohli, Frank C Setzer
INTRODUCTION: The aim of this study was to compare the assessment of healing after endodontic microsurgery using 2-dimensional (2D) periapical films versus 3-dimensional (3D) cone-beam computed tomographic (CBCT) imaging. METHODS: The healing of 51 teeth from 44 patients was evaluated using Molven's criteria (2D) and modified PENN 3D criteria. The absolute area (2D) and volume (3D) changes of apical lesions preoperatively and at follow-up were calculated by segmentation using OsiriX software (Pixmeo, Bernex, Switzerland) and ITK-Snap (free software)...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527627/a-kinetic-study-on-the-reactivity-of-azanone-hno-toward-its-selected-scavengers-insight-into-its-chemistry-and-detection
#4
Renata Smulik-Izydorczyk, Adrianna Mesjasz, Angelika Gerbich, Jan Adamus, Radosław Michalski, Adam Sikora
Recently, azanone (HNO), which is the protonated one-electron reduction product of (·)NO, has gained considerable attention due to its unique pharmacological effects. Although there has been much progress in understanding HNO biology and chemistry, it remains the most elusive reactive nitrogen species. Herein, we applied the competition kinetics method, based on two parallel HNO reactions with the different scavengers and molecular oxygen (kO2 = (1.8 ± 0.3) × 10(4) M(-1) s(-1)), to determine the rate constants for the reactions of HNO with its selected co-reactants...
May 17, 2017: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/28527624/understanding-aerobic-anaerobic-metabolism-in-caldibacillus-debilis-through-a-comparison-with-model-organisms
#5
Scott Wushke, Victor Spicer, Xiang Li Zhang, Brian Fristensky, Oleg V Krokhin, David B Levin, Nazim Cicek, Richard Sparling
Caldibacillus debilis GB1 is a facultative anaerobe isolated from a thermophilic aero-tolerant cellulolytic enrichment culture. There is a lack of representative proteomes of facultative anaerobic thermophilic Bacillaceae, exploring aerobic/anaerobic expression. The C. debilis GB1 genome was sequenced and annotated, and the proteome characterized under aerobic and anaerobic conditions while grown on cellobiose. The draft sequence of C. debilis GB1 contains a 3,340,752 bp chromosome and a 5,386 bp plasmid distributed over 49 contigs...
April 13, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28527507/it-takes-two-to-tango-engaging-patients-and-providers-with-portals
#6
REVIEW
Sachin D Shah, David Liebovitz
Patient portals are designed to be tools to more fully engage patients in their health care and help enable them to better manage their own health information. As the U.S. health care system rapidly adopted electronic health records (EHRs) over the past decade, many with linked patient portals, enthusiasm and expectations for this new technology as a means to engage and empower patients grew. Most patient portals have a set of core features designed to facilitate health care transactions, information tracking, and communication with care team members...
May 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28527465/super-and-sub-lorentzian-effects-in-the-ar-broadened-line-wings-of-hcl-gas
#7
Ha Tran, Gang Li, Volker Ebert, Jean-Michel Hartmann
Using previously recorded spectra of HCl diluted in Ar gas at room temperature for several pressure conditions, we show that the absorptions in between successive P and R transitions are significantly different from those predicted using purely Lorentzian line shapes. Direct theoretical predictions of the spectra are also made using requantized classical molecular dynamics simulations and an input HCl-Ar interaction potential. They provide the time evolution of the dipole auto-correlation function (DAF) whose Fourier-Laplace transform yields the absorption spectrum...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28527272/-does-corticosteroid-treatment-during-the-pre-and-postnatal-periods-affect-the-neurodevelopmental-outcome-of-premature-newborns
#8
Marita Lardón, José Uberos, Eduardo Narbona
INTRODUCTION: Glucocorticoids, widely used in the perinatal period, may be associated with adverse neurodevelopmental effects. OBJECTIVES: To analyze neurodevelopmental outcomes in a cohort of very low birth weight newborns treated with antenatal and/or postnatal corticosteroids. MATERIALS AND METHODS: This was a prospective cohort study in which we included all very low birth weight babies admitted to the neonatal intensive care unit of a tertiary hospital between 2008 and 2013...
April 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527225/clinical-feasibility-of-gait-training-with-a%C3%A2-robotic-exoskeleton-wpal-in-an-individual-with-both-incomplete-cervical-and-complete-thoracic-spinal-cord-injury-a%C3%A2-case-study
#9
Shigeo Tanabe, Soichiro Koyama, Eiichi Saitoh, Satoshi Hirano, Kanan Yatsuya, Tetsuya Tsunoda, Masaki Katoh, Takeshi Gotoh, Ayako Furumoto
BACKGROUND: Patients with tetraplegia can achieve independent gait with lateral-type powered exoskeletons; it is unclear whether medial-type powered exoskeletons allow for this. OBJECTIVE: To investigate gait training with a medial-type powered exoskeleton wearable power-assist locomotor (WPAL) in an individual with incomplete cervical (C5) and complete thoracic (T12) spinal cord injury (SCI). METHODS: The 60-session program was investigated retrospectively using medical records...
May 19, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28526958/-ectopic-suprasellar-type-iia-prl-secreting-pituitary-adenoma
#10
REVIEW
Heng-Jun Zhou, De-Sheng Pan, Xiao-Qun Ba, Ren-Ya Zhan, Xiu-Jue Zheng, Yue-Hui Ma
BACKGROUND: Ectopic pituitary adenomas (EPAs) are rare, and the suprasellar cistern seems to be the most common location. At this time, no detailed original classification, diagnosis, or treatment protocols for suprasellar pituitary adenomas (SPAs) have been described. CASE DESCRIPTION: A 19-year-old man showed visual disturbances and lack of libido for 3 years, he suffered a sharp decline in vision with only light perception in the last week. Magnetic resonance imaging scans revealed a large suprasellar cystic lesion with a normal pituitary in the sella turcica...
May 19, 2017: Pituitary
https://www.readbyqxmd.com/read/28526855/gut-homeostasis-and-regulatory-t-cell-induction-depend-on-molecular-chaperone-gp96-in-cd11c-cells
#11
Yunpeng Hua, Yi Yang, Shaoli Sun, Stephen Iwanowycz, Caroline Westwater, Boris Reizis, Zihai Li, Bei Liu
The intestinal immunity and tolerance are orchestrated by both the innate and the adaptive immune system. Intestinal professional antigen presenting cells (pAPCs) recognize and respond to the gut microbiota through multiple pattern-recognition receptors, including TLRs and NLRs. How gut pAPCs maintain mucosal homeostasis remains incompletely understood. Heat shock protein gp96, also known as grp94, is an essential immune chaperone for TLRs. However, the role of gp96 in regulating CD11c(+) APCs in the gut immunity and tolerance is unknown...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526827/activated-hepatic-stellate-cells-secrete-periostin-to-induce-stem-cell-like-phenotype-of-residual-hepatocellular-carcinoma-cells-after-heat-treatment
#12
Rui Zhang, Rong-Rong Yao, Jing-Huan Li, Gang Dong, Min Ma, Qiong-Dan Zheng, Dong-Mei Gao, Jie-Feng Cui, Zheng-Gang Ren, Rong-Xin Chen
Some evidences show that residual tumor after thermal ablation will progress rapidly. However, its mechanisms remain unclear. Here, we assessed whether activated HSCs could regulate stem cell-like property of residual tumor after incomplete thermal ablation to promote tumor progression. Human HCC cell lines were exposed to sublethal heat treatment to simulate the peripheral zone of thermal ablation. After residual HCC cells were cultured with conditional medium (CM) from activated HSCs, parameters of the stem cell-like phenotypes were analyzed...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526713/co-evolution-of-domain-interactions-in-the-chloroplast-tgd1-2-3-lipid-transfer-complex-specific-to-brassicaceae-and-poaceae-plants
#13
Yang Yang, Agnieszka Zienkiewicz, Anastasiya Lavell, Christoph Benning
The import of lipids into the chloroplast is essential for photosynthetic membrane biogenesis. This process requires an ABC transporter in the inner envelope membrane with three subunits, TRIGALACTOSYLDIACYLGLYCEROL (TGD) 1, 2, and 3 named after the oligogalactolipids that accumulate in the respective Arabidopsis thaliana mutants. Unlike Arabidopsis, in the model grass Brachypodium distachyon, chloroplast lipid biosynthesis is largely dependent on imported precursors, resulting in a characteristic difference in chloroplast lipid acyl composition between plants...
May 19, 2017: Plant Cell
https://www.readbyqxmd.com/read/28526694/measuring-osmosis-and-hemolysis-of-red-blood-cells
#14
Lauren K Goodhead, Frances M MacMillan
Since the discovery of the composition and structure of the mammalian cell membrane, biologists have had a clearer understanding of how substances enter and exit the cell's interior. The selectively permeable nature of the cell membrane allows the movement of some solutes and prevents the movement of others. This has important consequences for cell volume and the integrity of the cell and, as a result, is of utmost clinical importance, for example in the administration of isotonic intravenous infusions. The concepts of osmolarity and tonicity are often confused by students as impermeant isosmotic solutes such as NaCl are also isotonic; however, isosmotic solutes such as urea are actually hypotonic due to the permeant nature of the membrane...
June 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28526535/tnf-%C3%AE-is-superior-to-conventional-inflammatory-mediators-in-forecasting-ivig-nonresponse-and-coronary-arteritis-in-chinese-children-with-kawasaki-disease
#15
Peng Hu, Guang Mei Jiang, Yue Wu, Bao Yu Huang, Si Yan Liu, Dong Dong Zhang, Yao Xu, Yang Fang Wu, Xun Xia, Wei Wei, Bo Hu
BACKGROUND: Tumor necrosis factor (TNF) -α is of inflammatory cytokines produced chiefly by activated monocyte/macrophages, and has been implicated in the pathogenesis of Kawasaki disease (KD). We elucidated the relationship of plasma TNF-α with conventional inflammatory mediators, clinical classification, intravenous immunoglobulin (IVIG) response and coronary arteritis in the course of KD. METHODS: Seventy Chinese children with KD were enrolled and divided into 6 subgroups, including complete KD, incomplete KD, IVIG-responsive KD, IVIG-nonresponsive KD, coronary artery (CA) -noninvolvement KD and CA-involvement KD...
May 16, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28526498/incompletely-resected-non-small-cell-lung-cancer-do-we-know-how-to-handle-a-positive-margin
#16
EDITORIAL
Bryan M Burt
No abstract text is available yet for this article.
April 12, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28526497/mixed-species-biofilms-of-fusobacterium-necrophorum-and-porphyromonas-levii-impair-the-oxidative-response-of-bovine-neutrophils-in-vitro
#17
Joey S Lockhart, Andre G Buret, Howard Ceri, Douglas G Storey, Stefanie J Anderson, Douglas W Morck
Biofilms composed of anaerobic bacteria can result in persistent infections and chronic inflammation. Host immune cells have difficulties clearing biofilm-related infections and this can result in tissue damage. Neutrophils are a vital component of the innate immune system and help clear biofilms. The comparative neutrophilic response to biofilms versus planktonic bacteria remains incompletely understood, particularly in the context of mixed infections. The objective of this study was to generate mixed species anaerobic bacterial biofilms composed of two opportunistic pathogens, Fusobacterium necrophorum and Porphyromonas levii, and evaluate neutrophil responses to extracellular fractions from both biofilms and planktonic cell co-cultures of the same bacteria...
May 16, 2017: Anaerobe
https://www.readbyqxmd.com/read/28526246/impaired-mitophagy-facilitates-mitochondrial-damage-in-danon-disease
#18
Sherin I Hashem, Anne N Murphy, Ajit S Divakaruni, Matthew L Klos, Bradley C Nelson, Emily C Gault, Teisha J Rowland, Cynthia N Perry, Yusu Gu, Nancy D Dalton, William H Bradford, Eric J Devaney, Kirk L Peterson, Kenneth L Jones, Matthew R G Taylor, Ju Chen, Neil C Chi, Eric D Adler
RATIONALE: Lysosomal associated membrane protein type-2 (LAMP-2) is a highly conserved, ubiquitous protein that is critical for autophagic flux. Loss of function mutations in the LAMP-2 gene cause Danon disease, a rare X-linked disorder characterized by developmental delay, skeletal muscle weakness, and severe cardiomyopathy. We previously found that human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) from Danon patients exhibited significant mitochondrial oxidative stress and apoptosis...
May 16, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28525526/critical-analysis-of-the-council-for-international-organizations-of-medical-sciences-2016-international-guidelines-for-health-related-research-involving-humans
#19
REVIEW
Miguel Hugo Kottow Lang
This paper presents a preliminary discussion of the Council for International Organizations of Medical Sciences (CIOMS), recently issued “International Ethical Guidelines for Health-related Research Involving Humans” (2016) that acknowledges the document’s declared concern of the protection of human subjects and awareness of their needs and interests in “low-resource settings”. Nevertheless, guideline recommendations present exceptional situations –vulnerability, mental incompetence- wherein voluntary and consented participation may be reduced or omitted under three concurrent conditions: compelling scientific value, the need to include persons that will not benefit directly from participation, exposure to minimal or slight risks...
May 15, 2017: Medwave
https://www.readbyqxmd.com/read/28524796/improvement-of-visual-field-defects-after-focal-resection-for-occipital-lobe-epilepsy-case-report
#20
Takahiro Yamamoto, Tadashi Hamasaki, Hideo Nakamura, Kazumichi Yamada
Improvement of visual field defects after surgical treatment for occipital lobe epilepsy is rare. Here, the authors report on a 24-year-old man with a 15-year history of refractory epilepsy that developed after he had undergone an occipital craniotomy to remove a cerebellar astrocytoma at the age of 4. His seizures started with an elementary visual aura, followed by secondary generalized tonic-clonic convulsion. Perimetry revealed left-sided incomplete hemianopia, and MRI showed an old contusion in the right occipital lobe...
May 19, 2017: Journal of Neurosurgery
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