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https://www.readbyqxmd.com/read/29934027/-posterior-capsule-opacification-glistenings-and-visual-outcomes-3-years-after-implantation-of-a-new-hydrophobic-iol
#1
C Chassain, C Chamard
PURPOSE: To evaluate the visual outcomes, the incidence of glistenings and posterior capsule opacification in a series of consecutive eyes with a new blue light-filtering hydrophobic acrylic intraocular lens (IOL) SETTING: Service d'ophtalmologie, clinique Beausoleil, avenue de Lodève, Montpellier. DESIGN: Retrospective, cross-sectional study. METHODS: This study included a series of 66 eyes that underwent routine cataract surgery with PODEye (PhysIOL SA, Liège, Belgium) monofocal IOL implantation between May 2011 and November 2011...
June 19, 2018: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29932883/spatiotemporal-dynamics-of-canonical-wnt-signaling-during-embryonic-eye-development-and-posterior-capsular-opacification-pco
#2
Yichen Wang, Priyha Mahesh, Yan Wang, Samuel G Novo, Mahbubul H Shihan, Brielle Hayward-Piatkovskyi, Melinda K Duncan
The appropriate spatial and temporal regulation of canonical Wnt signaling is vital for eye development. However, the literature often conflicts on the distribution of canonical Wnt signaling in the eye. Here, using a sensitive mouse transgenic reporter line, we report a detailed re-evaluation of the spatiotemporal dynamics of canonical Wnt signaling in the developing eye. Canonical Wnt activity was dynamic in the optic vesicle and later in the retina, while it was absent from the ectodermal precursors of the lens and corneal epithelium...
June 19, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29932196/the-heterocubane-tersnas-4
#3
Alexander Hinz, Jose M Goicoechea
The synthesis of a novel heterocubane [RSnE]4 was successful for E = As, while for E = P differing behaviour was observed. Aryl-substituted chlorostannylenes were treated with salts of heavy cyanate homologues PCO- and AsCO-. The reaction with AsCO- salts afforded primarily [TerSnAs]4 (Ter = 2,6-dimesitylphenyl). In contrast, the reaction of TerSnCl with NaPCO proceeded considerably less cleanly affording a mixture of products. The main product was putatively a neutral [Ter4Sn4P4] compound, however, it is not a cubane...
June 22, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29932164/study-on-the-synergetic-fire-retardant-effect-of-nano-sb%C3%A2-o%C3%A2-in-pbt-matrix
#4
Lei Niu, Jianlin Xu, Wenlong Yang, Jiqiang Ma, Jinqiang Zhao, Chenghu Kang, Jiaqiang Su
Nano-Sb₂O₃ has excellent synergistic flame-retardant effects. It can effectively improve the comprehensive physical and mechanical properties of composites, reduce the use of flame retardants, save resources, and protect the environment. In this work, nanocomposites specimens were prepared by the melt-blending method. The thermal stability, mechanical properties, and flame retardancy of a nano-Sb₂O₃⁻brominated epoxy resin (BEO)⁻poly(butylene terephthalate) (PBT) composite were analyzed, using TGA and differential scanning calorimetry (DSC), coupled with EDX analysis, tensile testing, cone calorimeter tests, as well as scanning electron microscopy (SEM) and flammability tests (limiting oxygen index (LOI), UL94)...
June 22, 2018: Materials
https://www.readbyqxmd.com/read/29930449/influence-of-total-intraocular-lens-diameter-on-efficacy-and-safety-for-in-the-bag-cataract-surgery
#5
Efstathios Vounotrypidis, Carlo Lackerbauer, Daniel Kook, Martin Dirisamer, Siegfried Priglinger, Wolfgang J Mayer
CONTEXT: Intraocular lenses with variable total diameter are supposed to fit better in the capsular bag and lead to fewer complications. AIMS: This study aims to investigate the efficacy and the safety of an intraocular lens model with variable total diameter. SETTINGS AND DESIGN: Prospective randomized intraindividual study. SUBJECTS AND METHODS: Thirty-two eyes of sixteen patients with bilateral age-related cataract received standard cataract surgery with implantation of an intraocular lens with a standard diameter in one eye (Quatrix®, Group A) and with a variable total diameter in the fellow eye (Quatrix Evolutive®, Group B)...
May 2018: Oman Journal of Ophthalmology
https://www.readbyqxmd.com/read/29909703/commercial-slit-lamp-anterior-segment-photography-versus-digital-compact-camera-mounted-on-a-standard-slit-lamp-with-an-adapter
#6
Huw Oliphant, Alasdair Kennedy, Oliver Comyn, David J Spalton, Mayank A Nanavaty
PURPOSE: To compare slit lamp mounted cameras (SLC) versus digital compact camera (DCC) with slit-lamp adaptor when used by an inexperienced technician. METHODS: In this cross sectional study, where posterior capsule opacification (PCO) was used as a comparator, patients were consented for one photograph with SLC and two with DCC (DCC1 and DCC2), with a slit-lamp adaptor. An inexperienced clinic technician, who took all the photographs and masked the images, recruited one eye of each patient...
June 16, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29891902/three-year-incidence-of-nd-yag-capsulotomy-and-posterior-capsule-opacification-and-its-relationship-to-monofocal-acrylic-iol-biomaterial-a-uk-real-world-evidence-study
#7
Paul G Ursell, Mukesh Dhariwal, Katarina Majirska, Frank Ender, Shoshannah Kalson-Ray, Alessandra Venerus, Cristiana Miglio, Christine Bouchet
PURPOSE: To evaluate 3-year incidence of Nd:YAG capsulotomy and PCO and compare the effect of different IOL materials. METHODS: Data were retrospectively collected from seven UK ophthalmology clinics using Medisoft electronic medical records. Eyes from patients ≥65 years undergoing cataract surgery with implantation of acrylic monofocal IOLs during 2010-2013 and 3-year follow-up were analysed. Nd:YAG capsulotomy and PCO incidence proportions were reported for 3 IOL cohorts: AcrySof, other hydrophobic and hydrophilic acrylic IOLs...
June 11, 2018: Eye
https://www.readbyqxmd.com/read/29890580/variability-of-pco-2-in-surface-waters-and-development-of-prediction-model
#8
Sewoong Chung, Hyungseok Park, Jisu Yoo
Inland waters are substantial sources of atmospheric carbon, but relevant data are rare in Asian monsoon regions including Korea. Emissions of CO2 to the atmosphere depend largely on the partial pressure of CO2 (pCO2 ) in water; however, measured pCO2 data are scarce and calculated pCO2 can show large uncertainty. This study had three objectives: 1) to examine the spatial variability of pCO2 in diverse surface water systems in Korea; 2) to compare pCO2 calculated using pH-total alkalinity (Alk) and pH-dissolved inorganic carbon (DIC) with pCO2 measured by an in situ submersible nondispersive infrared detector; and 3) to characterize the major environmental variables determining the variation of pCO2 based on physical, chemical, and biological data collected concomitantly...
May 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29890493/catalytic-oxidation-of-vocs-over-mn-tio-2-activated-carbon-under-185-nm-vuv-irradiation
#9
Yajie Shu, Yin Xu, Haibao Huang, Jian Ji, Shimin Liang, Muyan Wu, Dennis Y C Leung
Volatile organic compounds (VOCs) are regarded as the major contributors to air pollution, and should be strictly regulated. Photocatalytic oxidation (PCO) is of great interest for the removal of VOCs owing to its strong oxidation capability. However, its application is greatly limited by catalytic deactivation. Vacuum Ultraviolet (VUV) irradiation provides a novel way to improve the photocatalytic activity while much O3 will be generated which may cause secondary pollution. In this study, a multi-functional catalyst of Mn/TiO2 /activated carbon (AC) was developed to eliminate and utilize O3 , as well as enhance catalytic oxidation of VOC degradation via ozone-assisted catalytic oxidation (OZCO)...
June 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29887901/effect-of-chamomile-capsule-on-lipid-and-hormonal-related-parameters-among-women-of-reproductive-age-with-polycystic-ovary-syndrome
#10
Maryam Heidary, Zahra Yazdanpanahi, Mohammad Hossain Dabbaghmanesh, Mohammad Ebrahin Parsanezhad, Masoumeh Emamghoreishi, Marzieh Akbarzadeh
Background: According to traditional herbal medicine, chamomile has been considered as one of the herbal remedies for patients with polycystic ovary syndrome (PCOS). The study aimed to investigate the effect of chamomile on lipid and hormonal parameters in women of reproductive age with PCOS. Materials and Methods: This study is a randomized clinical trial which was conducted on 80 women (40 patients in each group) of childbearing age with PCO. The intervention group received 370 mg oral capsules of chamomile three times a day for 3 months...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29886945/sex-differences-in-oxidative-stress-responses-of-tropical-topshells-trochus-histrio-to-increased-temperature-and-high-pco-2
#11
Tiago F Grilo, Ana R Lopes, Eduardo Sampaio, Rui Rosa, Patrícia G Cardoso
Given scarcity of knowledge on gender ecophysiological responses of tropical marine organisms to global climate change, the major aim of this research was to investigate potential sex differences in oxidative status of topshell Trochus histrio, after a combined exposure to increased temperature and pCO2 . Lipid peroxidation, heat-shock response and antioxidant enzymatic activities were evaluated. Lipid peroxidation varied differently between sexes, with males undergoing cellular damage under high pCO2 , which was elevated temperature-counteracted...
June 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29870834/the-absence-of-the-pco-2-effect-on-dissolved-134-cs-uptake-in-select-marine-organisms
#12
Thomas Lacoue-Labarthe, François Oberhänsli, Jean-Louis Teyssié, Marc Metian
Ocean acidification have been shown to not affect the capacity of bivalves to bioaccumulation 134 Cs in their tissue; but as this was studied on only one species to date. There is therefore a need to verify if this holds true for other bivalve species or other marine invertebrates. The present short communication confirms that in the scallop Mimachlamys varia and the prawn Penaeus japonicus, two species that supposedly have a record to preferentially concentrates this radionuclide, that bioconcentration of 134 Cs was shown not to be influenced by a decreasing pH (and thereby increasing seawater pCO2 )...
June 2, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29861551/experimental-and-modeling-study-of-visible-light-responsive-photocatalytic-oxidation-pco-materials-for-toluene-degradation
#13
Lexuan Zhong, James J Brancho, Stuart Batterman, Bart M Bartlett, Christopher Godwin
Only limited research has examined the development and application of visible light responsive photocatalytic oxidation (PCO), although such materials have great potential for mitigating concentrations of volatile organic compounds (VOCs) when applied to building surfaces. This study evaluates the performance and characteristics of a visible light responsive photocatalyst, specially, a co-alloyed TiNbON compound with a band energy of 2.3 eV. The PCO material was developed using urea-glass synthesis, characterized by scanning electron microscopy (SEM), diffuse reflectance spectra (DRS), powder X-ray diffraction (PXRD), and Brunauer-Emmett-Teller (BET) methods, and VOC removal efficiency was measured under visible light for toluene (1-5 ppm) at room temperature (21...
November 5, 2017: Applied Catalysis. B, Environmental
https://www.readbyqxmd.com/read/29844378/high-pco-2-induced-exopolysaccharide-rich-ballasted-aggregates-of-planktonic-cyanobacteria-could-explain-paleoproterozoic-carbon-burial
#14
Nina A Kamennaya, Marcin Zemla, Laura Mahoney, Liang Chen, Elizabeth Holman, Hoi-Ying Holman, Manfred Auer, Caroline M Ajo-Franklin, Christer Jansson
The contribution of planktonic cyanobacteria to burial of organic carbon in deep-sea sediments before the emergence of eukaryotic predators ~1.5 Ga has been considered negligible owing to the slow sinking speed of their small cells. However, global, highly positive excursion in carbon isotope values of inorganic carbonates ~2.22-2.06 Ga implies massive organic matter burial that had to be linked to oceanic cyanobacteria. Here to elucidate that link, we experiment with unicellular planktonic cyanobacteria acclimated to high partial CO2 pressure (pCO2 ) representative of the early Paleoproterozoic...
May 29, 2018: Nature Communications
https://www.readbyqxmd.com/read/29800484/oysters-and-eelgrass-potential-partners-in-a-high-pco-2-ocean
#15
Maya L Groner, Colleen A Burge, Ruth Cox, Natalie Rivlin, Mo Turner, Kathryn L Van Alstyne, Sandy Wyllie-Echeverria, John Bucci, Philip Staudigel, Carolyn S Friedman
Climate change is affecting the health and physiology of marine organisms and altering species interactions. Ocean acidification (OA) threatens calcifying organisms such as the Pacific oyster, Crassostrea gigas. In contrast, seagrasses, such as the eelgrass Zostera marina, can benefit from the increase in available carbon for photosynthesis found at a lower seawater pH. Seagrasses can remove dissolved inorganic carbon from OA environments, creating local daytime pH refugia. Pacific oysters may improve the health of eelgrass by filtering out pathogens such as Labyrinthula zosterae (LZ), which causes eelgrass wasting disease (EWD)...
May 25, 2018: Ecology
https://www.readbyqxmd.com/read/29790617/plant-growth-chamber-design-for-subambient-pco-2-and-%C3%AE-13-c-studies
#16
William M Hagopian, Brian A Schubert, Robert A Graper, A Hope Jahren
RATIONALE: Subambient pCO2 has persisted across the major Phanerozoic ice ages, including the entire late Cenozoic (~30 Ma to present). Stable isotope analysis of plant-derived organic matter is used to infer changes in pCO2 and climate in the geologic past, but a growth chamber that can precisely control environmental conditions, including pCO2 and δ13 C value of CO2 (δ13 CCO2 ) at subambient pCO2 , is lacking. METHODS: We designed and built five identical chambers specifically for plant growth under stable subambient pCO2 (~100 to 400 ppm) and δ13 CCO2 conditions...
May 23, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29789157/comparison-of-fibrotic-response-in-the-human-lens-capsular-bag-after-femtosecond-laser-assisted-cataract-surgery-and-conventional-phacoemulsification
#17
Christian M Wertheimer, Mehdi Shajari, Thomas Kohnen, Annabel von Studnitz, Stefan Kassumeh, Socrates Dimitriou, Ralf Lieberz, Imad Hakim, Siegfried G Priglinger, Wolfgang J Mayer
PURPOSE: To compare the effect of different laser pulse energy settings in femtosecond laser-assisted cataract surgery with that of standard phacoemulsification and no energy at all used on posterior capsule opacification (PCO) in vitro. SETTING: Cell and Molecular Biology Research Laboratory, Department of Ophthalmology, Ludwig-Maximilians-University Munich, Real Eyes, Ophthalmology Center, Munich, and Institute for Clinical Pathology, Goethe University Frankfurt, Frankfurt, Germany...
May 19, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29785700/the-association-between-circulating-irisin-levels-and-different-phenotypes-of-polycystic-ovary-syndrome
#18
L Zhang, X Fang, L Li, R Liu, C Zhang, H Liu, M Tan, G Yang
PURPOSE: The diagnosis of polycystic ovary syndrome (PCOS) is based on a combination of various clinical phenotypes in each patient. However, insulin resistance (IR) and dysmetabolism are not included in the diagnostic criteria of PCOS. Therefore, the definition of PCOS is controversial. The objective of this study is to investigate whether some PCOS phenotypes can be predicted by a circulating biomarker related to IR and metabolic dysfunction in PCOS women. METHODS: One hundred and seventeen women with PCOS and 95 healthy women were recruited for this study...
May 21, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29775890/triterpenic-acids-enriched-fraction-from-cyclocarya-paliurus-attenuates-non-alcoholic-fatty-liver-disease-via-improving-oxidative-stress-and-mitochondrial-dysfunction
#19
Meng-Ge Zhao, Xue-Ping Sheng, Ya-Ping Huang, Yi-Ting Wang, Cui-Hua Jiang, Jian Zhang, Zhi-Qi Yin
The effects of triterpenic acids-enriched fraction from Cyclocarya paliurus (CPT) on nonalcoholic fatty liver disease (NAFLD) were investigated using in vivo and in vitro models. In high fat diet-induced Wister rats, CPT significantly increased superoxide dismutase (SOD) activity and glutathione/oxidized glutathione (GSH/GSSG) ratio, reduced malondialdehyde (MDA) and protein carbonyl (PCO) levels. Moreover, CPT restored mitochondrial membrane potential dysfunction, decreased cytochrome P450 enzyme 2E1 (CYP2E1) activity, improved nuclear factor erythroid 2-related factor 2 (Nrf2) and Nrf2-mediated antioxidant enzyme heme oxygenase1 (HO-1) expression...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29770548/the-chemistry-of-the-2-phosphaethynolate-anion
#20
Hansjörg Grützmacher, José Goicoechea
Likely the first synthesis of the phosphaethynolate anion, PCO-, was performed already in 1894 when NaPH2 was reacted with CO in an attempt to make Na(CP) under elimination of water. This reaction was repeated only 117 years later when it was discovered that Na(OCP) and H2 are the products of this remarkable transformation. Li(OCP) was synthesized and fully characterized in 1992 but this salt proved to be too unstable to allow a detailed investigation. Remarkably, it needs the heavier analogues of this lithium salt, Na(OCP) and K(OCP), which are remarkably stable and can be even dissolved in water, to fully explore fully the chemistry of this new functional group...
May 17, 2018: Angewandte Chemie
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