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https://www.readbyqxmd.com/read/28433393/potential-mobility-of-inorganic-nutrients-and-its-controls-at-the-sediment-water-interface-in-the-main-path-of-kuroshio-current-off-eastern-taiwan
#1
Fengxia Zhou, Xuelu Gao, Yong Zhang, Huamao Yuan, Jinming Song, Kai Liu, Bo Yang, Wen Zhuang
Surface sediments were collected from the main path of Kuroshio Current (KC) off eastern Taiwan (ETW), and laboratory incubation was conducted for the study of the nutrient exchange at the sediment-water interface. Exchange fluxes of NO3(-)-N, NO2(-)-N, NH4(+)-N, PO4(3-)-P and SiO3(2-)-Si under simulated site condition were -0.0866, 0.00146, 0.0634, -0.00812 and -0.181mmolm(-2)d(-1), respectively. This indicated that sediments in the studied area might act as a source of NO2(-)-N and NH4(+)-N and a sink of NO3(-)-N, PO4(3-)-P and SiO3(2-)-Si...
April 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28433153/polyethylenimine-kappa-carrageenan-micro-arc-oxidation-coating-for-passivation-of-magnesium-alloy
#2
A Golshirazi, M Kharaziha, M A Golozar
The aim of this study was to combine micro-arc oxidation (MAO) and self-assembly technique to improve corrosion resistivity of AZ91 alloy. While a silicate-fluoride electrolyte was adopted for MAO treatment, polyethylenimine (PEI)/kappa carrageenan (KC) self-assembly coating was applied as the second coating layer. Resulted demonstrated the formation of forsterite-fluoride containing MAO coating on AZ91 alloy depending on the voltage and time of anodizing process. Addition of the second PEI/KC coating layer on MAO treated sample effectively enhanced the adhesive strength of MAO coated sample due to filling the pores with polymers and increase in the mechanical interlocking of coating to the substrate...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28432371/impact-of-diabetes-mellitus-on-occupational-health-outcomes-in-canada
#3
Anson Kc Li, Behdin Nowrouzi-Kia
BACKGROUND: Research suggests that diabetes mellitus (DM) has a negative impact on employment and workplace injury, but there is little data within the Canadian context. OBJECTIVE: To determine if DM has an impact on various occupational health outcomes using the Canadian Community Health Survey (CCHS). METHODS: CCHS data between 2001 and 2014 were used to assess the relationships between DM and various occupational health outcomes. The final sample size for the 14-year study period was 505 606, which represented 159 432 239 employed Canadians aged 15-75 years during this period...
April 2017: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28432114/intereye-asymmetry-in-bilateral-keratoconus-keratoconus-suspect-and-normal-eyes-and-its-relationship-with-disease-severity
#4
Mohammad Naderan, Mohammad Taher Rajabi, Parviz Zarrinbakhsh
BACKGROUND/AIM: To describe the intereye asymmetry in patients with keratoconus (KC), keratoconus suspect (KCS) and normal participants, and to evaluate the relationship between asymmetry and disease severity. METHODS: In this prospective observational comparative study, 446 patients with bilateral KC, 68 patients with bilateral KCS and 306 normal participants underwent topographic, keratometric and pachymetric evaluations by Pentacam as well as refractive and visual acuity examinations...
April 21, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28428003/rac1-signaling-regulates-cigarette-smoke-induced-inflammation-in-the-lung-via-the-erk1-2-mapk-and-stat3-pathways
#5
Jun-Xia Jiang, Shui-Juan Zhang, Hui-Juan Shen, Yan Guan, Qi Liu, Wei Zhao, Yong-Liang Jia, Jian Shen, Xiao-Feng Yan, Qiang-Min Xie
Cigarette smoke (CS) is a major risk factor for the development of chronic obstructive pulmonary disease (COPD). Our previous studies have indicated that Rac1 is involved in lipopolysaccharide-induced pulmonary injury and CS-mediated epithelial-mesenchymal transition. However, the contribution of Rac1 activity to CS-induced lung inflammation remains not fully clear. In this study, we investigated the regulation of Rac1 in CS-induced pulmonary inflammation. Mice or 16HBE cells were exposed to CS or cigarette smoke extract (CSE) to induce acute inflammation...
April 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28426715/acute-hypoxia-influences-collagen-and-matrix-metalloproteinase-expression-by-human-keratoconus-cells-in-vitro
#6
Tina B McKay, Jesper Hjortdal, Shrestha Priyadarsini, Dimitrios Karamichos
Keratoconus (KC) is a progressive corneal ectasia linked to thinning of the central cornea. Hard contact lenses, rigid gas permeable lenses, and scleral lenses are the primary treatment modalities for early to mid- stages of KC to correct refractive error and astigmatism that develops as a result of an irregular corneal structure. These treatments are associated with significant drawbacks, including reduced availability of the tear film and oxygen to the corneal epithelium and stroma. However, it remains unknown whether hypoxia affects corneal integrity in the KC pathobiology...
2017: PloS One
https://www.readbyqxmd.com/read/28423567/cxcr1-2-pathways-in-paclitaxel-induced-neuropathic-pain
#7
Brandolini Laura, Benedetti Elisabetta, Ruffini Pier Adelchi, Russo Roberto, Cristiano Loredana, Antonosante Andrea, d'Angelo Michele, Castelli Vanessa, Giordano Antonio, Allegretti Marcello, Cimini Annamaria
Chemotherapy-induced peripheral neuropathy (CIPN) is a type of neuropathic pain that represents a frequent and serious consequence of chemotherapy agents. Over the last years, significant progress has been achieved in elucidating the underlying pathogenesis of CIPN. The interference of taxanes with microtubule has been proposed as a mechanism that leads to altered axonal transport and to permanent neurological damages. The inflammatory process activated by chemotherapeutic agents has been considered as a potential trigger of nociceptive process in CIPN...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28416593/two-components-of-aversive-memory-in-drosophila-anesthesia-sensitive-and-anesthesia-resistant-memory-require-distinct-domains-within-the-rgk1-small-gtpase
#8
Satoshi Murakami, Maki Minami-Ohtsubo, Ryuichiro Nakato, Katsuhiko Shirahige, Tetsuya Tabata
For aversive olfactory memory in Drosophila, multiple components have been identified that exhibit different stabilities. These components have been defined by behavioral and genetic studies, and genes specifically required for a specific component have also been identified. Intermediate-term memory generated after single cycle conditioning is divided into anesthesia-sensitive memory (ASM) and anesthesia-resistant memory (ARM), with the latter being more stable. We determined that the ASM and ARM pathways converged on the Rgk1 small GTPase and that the N-terminal domain-deleted Rgk1 was sufficient for ASM formation, whereas the full-length form was required for ARM formation...
April 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28416495/ultrastructural-study-of-peripheral-and-central-stroma-of-keratoconus-cornea
#9
Aljoharah Alkanaan, Robert Barsotti, Omar Kirat, Turki Almubrad, Adnan Khan, Saeed Akhtar
PURPOSE: Assess the lamellar organisation of the peripheral and central stroma of the keratoconus (KC) and normal cornea. METHODS: Five normal and three KC corneas were fixed in 2.5% glutaraldehyde and processed for electron microscopy. The ultrathin sections were observed under JEOL 1400 TEM, and digital images were taken with a bottom-mounted 11-megapixel Quamisa camera, using the iTEM software. Measurements of the lamellae were carried out using the iTEM software...
April 17, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28415462/microencapsulation-of-eugenol-molecules-by-%C3%AE-cyclodextrine-as-a-thermal-protection-method-of-antibacterial-action
#10
R Piletti, A M Bugiereck, A T Pereira, E Gussati, J Dal Magro, J M M Mello, F Dalcanton, R Z Ternus, C Soares, H G Riella, M A Fiori
Eugenol is natural oil that has excellent antibacterial properties but cannot be used to fabricate many products that require thermal processing. One possible alternative to the use of the eugenol molecules in high-temperature processes is the encapsulation of these molecules in a structure that is not toxic and is resistant to thermal treatment. This work investigated the encapsulation process of eugenol molecules in β-cyclodextrine and the antibacterial properties of eugenol-β-cyclodextrine (the eugenol-βCD complex) against Escherichia coli and Staphylococcus aureus...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28414053/inhibition-effects-of-novel-polyketide-compound-ppq-b-against-influenza-a-virus-replication-by-interfering-with-the-cellular-egfr-pathway
#11
Miaomiao Wang, Shuyao Wang, Wei Wang, Yi Wang, Hui Wang, Weiming Zhu
Development of anti-influenza A virus (IAV) drugs with novel targets and low toxicity is critical for preparedness against influenza outbreaks. In the current study, our results indicated that the novel polyketide compound purpurquinone B (PPQ-B) derived from acid-tolerant fungus Penicillium purpurogenum strain JS03-21 suppressed the replication of IAV in vitro with low toxicity, and may block some stages after virus adsorption. PPQ-B could inhibit H1N1 (A/Puerto Rico/8/34; PR8), H1N1 (A/California/04/2009; Cal09) and H3N2 (A/swine/Minnesota/02719/2009) virus replication in vitro, suggesting that PPQ-B possesses broad-spectrum anti-IAV activities...
April 13, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28412174/experimentally-determined-tilt-and-bending-moduli-of-single-component-lipid-bilayers
#12
REVIEW
John F Nagle
Values of the bending modulus KC and the tilt modulus Kθ are reported for single component lipid bilayers. The lipids studied have the common names DOPC, DMPC, diC22:1PC, SOPC, POPC, diPhyPC, DLPC, DPPC, DHPC and DEPC, listed in the order of number of samples examined. The experimental method, thus far the only one that measures the tilt modulus of lipid bilayers, first obtains diffuse X-ray scattering data from oriented stacks of bilayers. The values of the moduli emerge from fitting the data to the accepted tilt-dependent continuum model for the free energy of a single bilayer, further enhanced by interactions between bilayers in the stack...
April 12, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28406853/the-role-of-computed-tomography-in-the-classification-of-pediatric-pelvic-fractures-revisited
#13
Bent Ma, Hennrikus Wl, Latorre Je, Armstrong Dg, Shaw B, Jones Kc, Segal Ls
OBJECTIVES: To determine the need of CT scans in the assessment of pediatric pelvic fractures DESIGN:: Retrospective Chart Review SETTING:: Level-1 Pediatric Trauma CenterPatients/Participants: 30 pediatric trauma patients with pelvic fractures who have obtained both a radiograph and CT Scan MAIN OUTCOME MEASUREMENTS:: Fleiss Kappa coefficient to compare inter-reliability. RESULTS: The average age of the patients was 7 years (range 1-13 years). 17 were male and 13 were female...
April 10, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28404517/dysregulation-of-microrna-biogenesis-in-the-small-intestine-after-ethanol-and-burn-injury
#14
Niya L Morris, Adam M Hammer, Abigail R Cannon, Robin C Gagnon, Xiaoling Li, Mashkoor A Choudhry
Ethanol exposure at the time of burn injury is a major contributor to post-burn pathogenesis. Many of the adverse effects associated with ethanol and burn injury are linked to an impaired intestinal barrier. The combined insult causes intestinal inflammation, resulting in tissue damage, altered tight junction expression, and increased intestinal permeability. MicroRNAs play a critical role in maintaining intestinal homeostasis including intestinal inflammation and barrier function. Specifically, miR-150 regulates inflammatory mediators which can contribute to gut barrier disruption...
April 9, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28403014/occupational-exposures-and-genetic-susceptibility-to-urinary-tract-cancers-a-systematic-review-and-meta-analysis
#15
Jovana Stojanovic, Sonja Milovanovic, Roberta Pastorino, Ivo Iavicoli, Stefania Boccia
This study aims to summarize the current knowledge on the relationship between genetic polymorphisms, occupational exposures, and urinary tract cancers. We searched MEDLINE, ISI Web of science, and SCOPUS online databases for all articles published in English language up to September 2016. A meta-analysis was performed to provide summary estimates for the association between a certain genetic polymorphism, occupational exposure and bladder cancer (BC) or kidney cancer (KC), when appropriate. Fifteen studies on BC and six on KC were deemed eligible for the review...
April 11, 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28399847/evaluation-of-helping-babies-breathe-quality-improvement-cycle-hbb-qic-on-retention-of-neonatal-resuscitation-skills-six-months-after-training-in-nepal
#16
Ashish Kc, Johan Wrammert, Viktoria Nelin, Robert B Clark, Uwe Ewald, Stefan Peterson, Mats Målqvist
BACKGROUND: Each year 700,000 infants die due to intrapartum-related complications. Implementation of Helping Babies Breathe (HBB)-a simplified neonatal resuscitation protocol in low-resource clinical settings has shown to reduce intrapartum stillbirths and first-day neonatal mortality. However, there is a lack of evidence on the effect of different HBB implementation strategies to improve and sustain the clinical competency of health workers on bag-and-mask ventilation. This study was conducted to evaluate the impact of multi-faceted implementation strategy for HBB, as a quality improvement cycle (HBB-QIC), on the retention of neonatal resuscitation skills in a tertiary hospital of Nepal...
April 11, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28393029/comparison-of-visual-and-topographic-outcomes-of-deep-anterior-lamellar-keratoplasty-and-penetrating-keratoplasty-in-keratoconus
#17
Bora Yüksel, Baran Kandemir, Umut Duygu Uzunel, Ozan Çelik, Sezgin Ceylan, Tuncay Küsbeci
AIM: To compare visual, surgical and topographic outcomes of deep anterior lamellar keratoplasty (DALK) and penetrating keratoplasty (PK) for keratoconus (KC). METHODS: In this multicenter, prospective, randomized clinical trial 76 eyes of 71 KC patients operated between January 2011 and July 2014 in 2 tertiary referral hospitals were included. Consecutive patients were alternately selected to receive one of the two surgical methods. Thirty eight eyes underwent DALK with the big-bubble technique and 38 eyes underwent PK...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28393023/mathematical-analysis-of-corneal-remodelling-after-intracorneal-ring-surgery-in-keratoconus
#18
Elias F Jarade, Elise Slim, Carole Cherfan, Hala El Rami, Toufic Hassan, Elias Chelala
AIM: To represent mathematically the intersection between the ectatic corneal geometry and the plane of intracorneal ring implants (ICRS) in order to determine the corneal response to ICRS surgery in keratoconus (KC). Thereafter, to present the concept and early results of a newly derived topography-guided nomogram for ICRS surgery for the treatment of keratectasia. METHODS: The corneal rings plane intersection was modelled to a conic section. Ring effect was the result of: the ring size, position (steep vs flat), location (distance from the geometric centre of the cornea), and the discrepancy between the ring's curvature and the tunnel's curvature...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28390947/expression-patterns-of-nuclear-receptors-in-parenchymal-and-non-parenchymal-mouse-liver-cells-and-their-modulation-in-cholestasis
#19
Ester Gonzalez-Sanchez, Delphine Firrincieli, Chantal Housset, Nicolas Chignard
Nuclear receptors (NR), the largest family of transcription factors, control many physiological and pathological processes. To gain insight into hepatic NR and their potential as therapeutic targets in cholestatis, we determined their expression in individual cell types of the mouse liver in normal and cholestatic conditions. Hepatocytes, cholangiocytes, hepatic stellate cells (HSC), sinusoidal endothelial cells (SEC) and Kupffer cells (KC) were isolated from the liver of mice with acute or chronic cholestasis (i...
April 5, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28389600/intravascular-donor-monocytes-play-a-central-role-in-lung-transplant-ischaemia-reperfusion-injury
#20
Kate Colette Tatham, Kieran Patrick O'Dea, Rosalba Romano, Hannah Elizabeth Donaldson, Kenji Wakabayashi, Brijesh Vipin Patel, Louit Thakuria, Andre Rudiger Simon, Padmini Sarathchandra, Nandor Marczin, Masao Takata
RATIONALE: Primary graft dysfunction in lung transplant recipients derives from the initial, largely leukocyte-dependent, ischaemia-reperfusion injury. Intravascular lung-marginated monocytes have been shown to play key roles in experimental acute lung injury, but their contribution to lung ischaemia-reperfusion injury post transplantation is unknown. OBJECTIVE: To define the role of donor intravascular monocytes in lung transplant-related acute lung injury and primary graft dysfunction...
April 7, 2017: Thorax
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