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https://www.readbyqxmd.com/read/28099574/anatomy-and-micromorphometric-analysis-of-leaf-catasetum-x-apolloi-benelli-grill-with-addition-of-potassium-silicate-under-different-light-sources
#1
L Eburneo, N G Ribeiro-Júnior, I V Karsburg, A A B Rossi, I V Silva
The aim of this study was to compare vitroplants Catasetum x apolloi grown under natural light and artificial light and different concentrations of potassium silicate, providing data on the anatomical differentiation that aids the acclimatization process of this species. Plants from in vitro seeding were used; 5 protocorms of approximately 0.5 cm were inoculated into vials with a capacity of 500 mL containing 100 mL of alternative culture medium plus potassium silicate (0.0, 0.5; 1.0 mL L-1), pH adjusted to 5...
January 12, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28095539/a-proposed-method-for-upper-eyelid-and-infrabrow-tightening-using-a-transcutaneous-temperature-controlled-radiofrequency-device-with-opaque-plastic-eye-shields
#2
Douglas J Key, Lauren Boudreaux
BACKGROUND: Laxity of the eyelid and periorbital area, a common manifestation of aging, is usually addressed via blepharoplasty and/ or fat transfer. Given the trend toward safer, less invasive treatments preferred by those patients reticent to undergo more invasive procedures, viable alternatives have been sought. Transcutaneous temperature controlled radiofrequency (TTCRF) integrates non- invasive super cial RF treatment with automatic temperature feedback control of energy deposition, as a stimulator of overall collagen remodeling; however, the globe of the eye is particularly sensitive to RF energy...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28077242/outbreak-of-elizabethkingia-meningoseptica-sepsis-with-meningitis-in-a-well-baby-nursery
#3
I-C Tai, T-P Liu, Y-J Chen, R-I Lien, C-Y Lee, Y-C Huang
Between March and May 2012, three neonates born at a regional maternity hospital developed Elizabethkingia meningoseptica (previously Chryseobacterium meningosepticum) sepsis with meningitis aged <10 days, and were treated successfully with intravenous ciprofloxacin plus vancomycin or piperacillin-tazobactam for three to six weeks. Four (16.6%) of 24 environmental specimens obtained from the nursery and delivery room were positive for this organism. All of the clinical isolates and two isolates from storage boxes for pacifiers and pacifier covers were genetically identical...
November 30, 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28050857/secondary-metabolites-from-bacillus-amyloliquefaciens-isolated-from-soil-can-kill-burkholderia-pseudomallei
#4
Patcharaporn Boottanun, Chotima Potisap, Julian G Hurdle, Rasana W Sermswan
Bacillus species are Gram-positive bacteria found in abundance in nature and their secondary metabolites were found to possess various potential activities, notably antimicrobial. In this study, Bacillus amyloliquefaciens N2-4 and N3-8 were isolated from soil and their metabolites could kill Burkholderia pseudomallei, a Gram-negative pathogenic bacterium also found in soil in its endemic areas. Moreover, the metabolites were able to kill drug resistant isolates of B. pseudomallei and also inhibit other pathogenic bacteria such as Staphylococcus aureus, Escherichia coli and Acinetobacter baumannii but not the non-pathogenic Burkholderia thailandensis, which is closely related to B...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28045456/redox-potential-as-a-master-variable-controlling-pathways-of-metal-reduction-by-geobacter-sulfurreducens
#5
Caleb E Levar, Colleen L Hoffman, Aubrey J Dunshee, Brandy M Toner, Daniel R Bond
Geobacter sulfurreducens uses at least two different pathways to transport electrons out of the inner membrane quinone pool before reducing acceptors beyond the outer membrane. When growing on electrodes poised at oxidizing potentials, the CbcL-dependent pathway operates at or below redox potentials of -0.10 V vs the standard hydrogen electrode, whereas the ImcH-dependent pathway operates only above this value. Here, we provide evidence that G. sulfurreducens also requires different electron transfer proteins for reduction of a wide range of Fe(III)- and Mn(IV)-(oxyhydr)oxides, and must transition from a high- to low-potential pathway during reduction of commonly studied soluble and insoluble metal electron acceptors...
January 3, 2017: ISME Journal
https://www.readbyqxmd.com/read/28038335/airborne-soil-particulates-as-vehicles-for-salmonella-contamination-of-tomatoes
#6
Govindaraj Dev Kumar, Robert C Williams, Hamzeh M Al Qublan, Nammalwar Sriranganathan, Renee R Boyer, Joseph D Eifert
The presence of dust is ubiquitous in the produce growing environment and its deposition on edible crops could occur. The potential of wind-distributed soil particulate to serve as a vehicle for S. Newport transfer to tomato blossoms and consequently, to fruits, was explored. Blossoms were challenged with previously autoclaved soil containing S. Newport (9.39log CFU/g) by brushing and airborne transfer. One hundred percent of blossoms brushed with S. Newport-contaminated soil tested positive for presence of the pathogen one week after contact (P<0...
December 14, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28033573/column-transport-studies-of-3-nitro-1-2-4-triazol-5-one-nto-in-soils
#7
Noah Mark, Jennifer Arthur, Katerina Dontsova, Mark Brusseau, Susan Taylor, Jiří Šimůnek
Development of the new, insensitive, energetic compound, NTO (3-nitro-1,2,4-triazol-5-one), creates need for the data on NTO's fate and transport to predict its behavior in the environment and potential for groundwater contamination. To measure the transport of NTO in soils, we conducted miscible-displacement experiments under steady state and interrupted flow conditions using eight soils having varying physical and geochemical properties. The breakthrough curve (BTC) data were analyzed using temporal moment analysis and simulated using HYDRUS-1D to determine transport parameters and better understand the mechanisms of sorption and transformation...
December 18, 2016: Chemosphere
https://www.readbyqxmd.com/read/28032288/removal-of-parabens-and-their-chlorinated-by-products-by-periphyton-influence-of-light-and-temperature
#8
Chaofeng Song, Hongjuan Hu, Hongyi Ao, Yonghong Wu, Chenxi Wu
The extensive use of parabens as preservatives in food and pharmaceuticals and personal care products results in frequent detection of their residuals in aquatic environment. In this work, the adsorption and removal of four parabens (methyl-, ethyl-, propyl-, and butyl-paraben) and two chlorinated methyl-parabens (CMPs) by periphyton were studied. Characteristics of the periphyton were identified to explore the possible relationship between paraben removal and periphyton properties. Results showed that linear adsorption coefficients (K d) vary from 554...
December 29, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28027537/low-density-lipoprotein-peptide-conjugated-submicron-emulsions-for-combating-prostate-cancer
#9
Pengchao Sun, Nan Zhang, Haiying Hua, Qian Liang, Xuexiao Zhang, Qian Sun, Yongxing Zhao
Submicron emulsions (SEs) is an advanced formulation that possesses good biocompatibility, high loading of hydrophobic drugs, and good stability through autoclave sterilization. To enhance tumor targeting and tumor cell uptake, SEs could be modified with positive charge and targeting moieties. In the present study, three formulations were prepared: Docetaxel-loaded SEs (DocSEs), cationic DocSEs (DocCSEs), and low density lipoprotein receptor (LDLR) targeted peptide-RLT (CEKLKEAFRLTRKRGLKLA) modified DocCSEs (RLT-DocCSEs)...
December 24, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28013131/effect-of-various-types-of-thermal-pretreatment-techniques-on-the-hydrolysis-compositional-analysis-and-characterization-of-water-hyacinth
#10
Visva Bharati Barua, Ajay S Kalamdhad
The aim of this work was to study the effect of four different types of thermal pretreatment techniques i.e., hot air oven, microwave, autoclave and hot water bath on the hydrolysis, compositional analysis and characterization of water hyacinth. To determine the most efficient thermal pretreatment technique exhibiting enhanced solubilisation. Highest solubilisation was achieved by hot air oven (55.5%), followed by microwave, hot water bath and autoclave. Bio-chemical methane potential (BMP) test of hot air oven pretreated and untreated water hyacinth was conducted...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28003735/oxygen-permeability-of-the-pigmented-material-used-in-cosmetic-daily-disposable-contact-lenses
#11
Stephen Galas, Lenora L Copper
PURPOSE: To evaluate the individual contributions of pigment colorant and packing solution containing polyvinyl pyrrolidone (PVP) on the oxygen permeability (Dk) of a cosmetic printed etafilcon A daily disposable contact lens packaged with PVP. METHOD: The oxygen transport of a contact lens is evaluated through the central optical zone of the lens. Cosmetic printed contact lenses contain pigment colorant in the periphery or mid-periphery of the lens. Therefore, to assess the impact of cosmetic print on oxygen permeability, special lenses need to be produced that contain the colorant within the central optical zone...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28002493/about-the-sterilization-of-chitosan-hydrogel-nanoparticles
#12
Raquel Galante, Carolina F Rediguieri, Irene Satiko Kikuchi, Pablo A S Vasquez, Rogério Colaço, Ana Paula Serro, Terezinha J A Pinto
In the last years, nanostructured biomaterials have raised a great interest as platforms for delivery of drugs, genes, imaging agents and for tissue engineering applications. In particular, hydrogel nanoparticles (HNP) associate the distinctive features of hydrogels (high water uptake capacity, biocompatibility) with the advantages of being possible to tailor its physicochemical properties at nano-scale to increase solubility, immunocompatibility and cellular uptake. In order to be safe, HNP for biomedical applications, such as injectable or ophthalmic formulations, must be sterile...
2016: PloS One
https://www.readbyqxmd.com/read/27987689/leptothrix-sp-sheaths-modified-with-iron-oxide-particles-magnetically-responsive-high-aspect-ratio-functional-material
#13
Ivo Safarik, Ralitsa Angelova, Eva Baldikova, Kristyna Pospiskova, Mirka Safarikova
Smart materials of biological origin are attracting a lot of attention nowadays, especially as catalysts, carriers or adsorbents. Among them, magnetically modified biomaterials are especially important due to their response to external magnetic field. This report demonstrates that naturally occurring micrometer sized, high aspect ratio material (native and autoclaved Leptothrix sp. sheaths) efficiently bind synthetically prepared magnetite and maghemite nanoparticles and their aggregates. Magnetic modification of Leptothrix sheaths enables to prepare a promising material for advanced biotechnology and environmental technology applications...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27981784/microwave-assisted-selective-hydrogenation-of-furfural-to-furfuryl-alcohol-employing-a-green-and-noble-metal-free-copper-catalyst
#14
Pedro N Romano, João M A R de Almeida, Yuri Carvalho, Peter Priecel, Eduardo Falabella Sousa-Aguiar, Jose A Lopez-Sanchez
Green, inexpensive, and robust copper-based heterogeneous catalysts achieve 100 % conversion and 99 % selectivity in the conversion of furfural to furfuryl alcohol when using cyclopentyl-methyl ether as green solvent and microwave reactors at low H2 pressures and mild temperatures. The utilization of pressurized microwave reactors produces a 3-4 fold increase in conversion and an unexpected enhancement in selectivity as compared to the reaction carried out at the same conditions using conventional autoclave reactors...
December 20, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27979766/nebulized-solid-lipid-nanoparticles-for-the-potential-treatment-of-pulmonary-hypertension-via-targeted-delivery-of-phosphodiesterase-5-inhibitor
#15
Shaimaa Makled, Noha Nafee, Nabila Boraie
Phosphodiesterase type 5 (PDE-5) inhibitors - among which sildenafil citrate (SC) - play a primary role in the treatment of pulmonary hypertension (PH). Yet, SC can be only administered orally or parenterally with lot of risks. Targeted delivery of SC to the lungs via inhalation/nebulization is mandatory. In this study, solid lipid nanoparticles (SLNs) loaded with SC were prepared and characterized in terms of colloidal, morphological and thermal properties. The amount of drug loaded and its release behavior were estimated as a function of formulation variables...
December 12, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27967320/effect-of-steam-autoclaving-on-the-tensile-strength-of-resin-cements-used-for-bonding-two-piece-zirconia-abutments
#16
Marcos Alexandre Fadanelli, Flà  Via Lucisano Botelho Amaral, Roberta Tarkany Basting, Cecilia Pedroso Turssi, Bruno Salles Sotto-Maior, Fabiana Mantovani Gomes Franà  A
PURPOSE: this study evaluated the effects of steam autoclave sterilization on the tensile strength of two types of resin cements used to bond customized CAD/CAM zirconia abutments onto titanium bases. METHODS: forty sets of zirconia abutments cemented to screwed titanium bases of implants analogs were divided into four groups (n = 10). Two groups were treated with a conventional chemically activated resin cement (ML - Multilink Ivoclar Vivadent) and the other two groups with a self-adhesive dual resin cement (U200 - U200 RelyX 3M ESPE)...
December 14, 2016: Journal of Oral Implantology
https://www.readbyqxmd.com/read/27956287/toxic-anterior-segment-syndrome-caused-by-autoclave-reservoir-wall-biofilms-and-their-residual-toxins
#17
Andrew L Sorenson, Robert L Sorenson, David J Evans
PURPOSE: To identify etiology of toxic anterior segment syndrome (TASS) after uneventful phacoemulsification. SETTING: EyeMD Laser and Surgery Center, Oakland, California. DESIGN: Retrospective case series. METHODS: Patient charts with TASS were reviewed. Reservoirs of 2 autoclaves associated with these cases were cultured for bacterial contamination. Cultures were performed on 23 other autoclave reservoirs at surgery centers in the local area...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27936245/in-vitro-selective-growth-inhibitory-effect-of-8-hydroxyquinoline-on-clostridium-perfringens-versus-bifidobacteria-in-a-medium-containing-chicken-ileal-digesta
#18
Eva Skrivanova, Filip Van Immerseel, Petra Hovorkova, Ladislav Kokoska
Clostridium perfringens-induced necrotic enteritis is generally controlled by antibiotics. However, because of increasing antibiotic resistance, other antibacterial agents are required, preferably ones that do not affect the beneficial intestinal microbiota of the host. This study evaluated the in vitro selective growth-inhibitory effect of 8-hydroxyquinoline (8HQ) on C. perfringens vs. bifidobacteria in a medium containing chicken ileal digesta. Prior to the experiments, the minimum inhibitory concentrations of 8HQ and penicillin G were determined by broth microdilution assay...
2016: PloS One
https://www.readbyqxmd.com/read/27934823/banana-peel-culture-as-an-indigenous-medium-for-easy-identification-of-late-sporulation-human-fungal-pathogens
#19
A J Kindo, A Tupaki-Sreepurna, M Yuvaraj
AIM: Fungi are increasing in incidence as human pathogens and newer and rarer species are continuously being encountered. Identifying these species from growth on regular culture media may be challenging due to the absence of typical features. An indigenous and cheap medium, similar to the natural substrate of these fungi, was standardised in our laboratory as an aid to species identification in a conventional laboratory setting. MATERIALS AND METHODS: Ripe banana peel pieces, sterilised in an autoclave at 121°C temperature and 15 lbs pressure for 15 min promoted good growth of hyphae and pycnidia or acervuli in coelomycetes, flabelliform and medusoid fruiting bodies of basidiomycetes and fruit bodies such as cleistothecium in ascomycetes...
October 2016: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27928119/hypolipidemic-effect-of-the-autoclaved-extract-prepared-from-pea-pisum-sativum-l-pods-in-vivo-and-in-vitro
#20
Kae Inagaki, Yuuki Nishimura, Emiko Iwata, Sachinobu Manabe, Masahiro Goto, Yoshio Ogura, Hisako Hotta
By autoclaving, we obtained a polyphenol and dietary fiber from pea (Pisum sativum L.) pods in parallel without acid or alkali treatment or organic solvent extraction. Rats fed a high-sucrose (HS) diet containing 3% autoclaved extract (AE) for 4 wk exhibited significantly lower serum triglyceride and total cholesterol levels than rats fed a HS diet. AE and soluble dietary fiber (SDF) from AE exhibited pancreatic lipase inhibitory activity at 13.3 mg/mL in vitro. AE and insoluble dietary fiber (IDF) from AE adsorbed cholesterol...
2016: Journal of Nutritional Science and Vitaminology
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