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https://www.readbyqxmd.com/read/29344915/mechanistic-investigation-of-visible-light-driven-photocatalytic-inactivation-of-e-coli-by-ag-agcl-znfe2o4
#1
Akhanda Raj Upreti, Nirina Khadgi, Yi Li
In this study, photocatalytic inactivation of Escherichia coli was investigated over magnetic nanocomposite Ag-AgCl/ZnFe2O4. The nanocomposite demonstrated efficient photocatalytic activity by complete inactivation of the bacteria within 60 min of visible light irradiation. The anions HPO42- and SO42- were found to play the most important role in the inhibition of photocatalytic inactivation of E. coli. A systematic investigation of mechanism of photocatalytic bacterial inactivation was carried out based on cell membrane injury test, scanning electron microscopy (SEM) of bacterial morphology changes, Fourier transform infrared (FTIR) spectroscopy of E...
January 17, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29299755/immobilization-of-recombinant-human-catalase-on-gold-and-silver-nanoparticles
#2
Agnieszka Małgorzata Pudlarz, Ewa Czechowska, Katarzyna Ranoszek-Soliwoda, Emilia Tomaszewska, Grzegorz Celichowski, Jarosław Grobelny, Janusz Szemraj
Human catalase cDNA was cloned into a pEX-C-His vector. Purified recombinant catalase was immobilized on nanoparticles. Gold and silver nanoparticles were synthesized in a variety of sizes by chemical reduction; no agglomerates or aggregates were observed in any of the colloids during dynamic light scattering or scanning transmission electron microscopy analysis. After immobilization on gold nanoparticles, recombinant catalase activity was found to be lower than that of the same amount of enzyme in aqueous solution...
January 3, 2018: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29297561/surgeons-performance-determining-the-amount-of-graft-material-for-sinus-floor-augmentation-using-tomography
#3
Adriana Dibo Cruz, Guilherme Alvares Peixoto, Marcelo Freitas Aguiar, Gabriela Alessandra Cruz Galhardo Camargo, Nicolas Homs
This study aimed to assess the performance of surgeons in determining the amount of graft material required for maxillary sinus floor augmentation in a preoperative analysis using cone-beam computed tomography images. A convenience sample of 10 retrospective CBCT exams (i-CAT®) was selected. Scans of the posterior maxilla area with an absence of at least one tooth and residual alveolar bone with an up to 5 mm height were used. Templates (n=20) contained images of representative cross-sections in multiplanar view...
May 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29283251/ferroelastic-phase-transition-and-switchable-dielectric-constant-in-heterometallic-niccolite-formate-frameworks
#4
Kai Wang, Jian-Bo Xiong, Bin Xia, Qing-Lun Wang, Yu-Zhang Tong, Yue Ma, Xian-He Bu
Four heterometallic formate frameworks templated by various alkylamine cations with the general formula [cat][GaIIIMnII(HCOO)6] {cat is MA (CH3NH3+) for 1, DMA [(CH3)2NH2+] for 2, EtA (CH3CH2NH3+) for 3, and DEtA [(CH3CH2)2NH2+] for 4} have been prepared and characterized by X-ray diffraction, differential scanning calorimetry, and dielectric studies. All of the complexes have niccolite-like structures, which possess the same [GaMn(HCOO)6]- anionic framework with binodal (412·63)(49·66) topology; only the counterions in the cavity are different...
December 28, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29242311/simple-technique-for-aiding-in-thoracic-ct-scanning-without-general-anaesthesia-in-cats
#5
Chung-Hui Lin, Pei-Ying Lo
No abstract text is available yet for this article.
December 14, 2017: Veterinary Record
https://www.readbyqxmd.com/read/29238430/safety-of-landiolol-hydrochloride-as-a-premedication-for-producing-an-appropriate-heart-rate-for-multidetector-row-computed-tomography-coronary-angiography
#6
Rie Koyoshi, Yuhei Shiga, Yoshiaki Idemoto, Yoko Ueda, Kohei Tashiro, Takashi Kuwano, Ken Kitajima, Kanta Fujimi, Akira Kawamura, Masahiro Ogawa, Shin-Ichiro Miura
Background: We evaluated the safety of a bolus injection of landiolol hydrochloride, an ultrashort-acting β1-selective antagonist, as a premedication prior to multidetector-row computed tomography coronary angiography (CTA). Methods: The subjects consisted of 176 patients (M/F = 64:112, 67 ± 11 years) who had heart rate (HR) at rest ≥ 70 beats/min (bpm) and underwent CTA. Systolic/diastolic blood pressure (SBP/DBP) and HR were measured before and after the administration of landiolol...
January 2018: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29204289/successful-treatment-of-tracheal-lymphoma-in-a-siamese-cat
#7
Laura Bataller, Alice Tamborini, Henry L'Eplattenier, Slavka Necova, Elise Robertson
Case summary: An 8-year-old female spayed Siamese indoor cat presented with a 3 week history of inspiratory dyspnoea, stridor and open-mouth breathing after exercise. Laryngoscopy, tracheoscopy, bronchoscopy and retroflexed nasopharyngoscopy were performed, and identified a multilobulated intraluminal mass within the trachea. Brush cytology was performed on the mass but was inconclusive in providing a definitive diagnosis. A CT scan of the neck failed to identify an obvious intraluminal mass and was negative to contrast uptake...
July 2017: JFMS Open Reports
https://www.readbyqxmd.com/read/29194713/intraspecific-variation-in-the-domestic-cat-bony-labyrinth-revealed-by-different-measurement-techniques
#8
Rico Schellhorn
The knowledge of intraspecific variation is important to make assumptions on an interspecific level. To study intraspecific variation in the bony labyrinth morphology of the domestic cat, eleven specimens of Felis silvestris catus and two additional subspecies (F. s. lybica, F. s. ornata) were investigated. The sample comprises skulls of adult males and females, as well as juvenile cats. Each bony labyrinth endocast was virtually reconstructed based on µCT scans. To estimate the radius of curvature of each inner ear semicircular canal, three different approaches were tested...
December 1, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/29174955/cleft-lip-and-palate-subjects-prevalence-of-abnormal-stylohyoid-complex-and-tonsilloliths-on-cone-beam-computed-tomography
#9
Eymi Valery Cazas-Duran, Izabel Regina Fischer Rubira-Bullen, Otávio Pagin, Bruna Stuchi Centurion-Pagin
INTRODUCTION AND OBJECTIVES: Tonsilloliths and abnormal stylohyoid complex may have similar symptoms to others of different aetiology. Individuals with cleft lip and palate describe similar symptoms because of the anatomical implications that are peculiar to this anomaly. The aim of this study was to determine the prevalence of abnormal stylohyoid complex and tonsilloliths on cone beam computed tomography in individuals with cleft lip and palate. METHODS: According to the inclusion and exclusion criteria, 66 CT scans out of of 2,794 were analysed, on i- Cat ® vision software with 0...
November 23, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/29172935/association-between-ultrasonographic-appearance-of-splenic-parenchyma-and-cytology-in-cats
#10
Mileva Bertal, Eric Norman Carmel, Alessia Diana, Loic Desquilbet, Swan Specchi, Pascaline Pey
Objectives The purpose of this study was to determine whether the presence of a splenic mass or a diffusely moth-eaten parenchyma on ultrasonographic scans could represent potential criteria of malignancy in the feline spleen. Methods Feline patients with ultrasonographic images and cytological analysis of the spleen obtained by fine-needle aspiration were retrospectively included in a multicentre study. Results One hundred and ninety-five cats met our inclusion criteria. There was a lack of agreement between the moth-eaten ultrasonographic appearance of the spleen and the presence of a malignant neoplasia on cytological analysis...
January 2018: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29142801/idiopathic-acquired-dacryocystocele-presenting-only-with-epiphora-a-very-rare-case-report
#11
Muhammad Jahanzaib Anwar, Saad A Choudhry, Muhammad Aadil, Ahmer Asif, Atif Ameer
A 42-years-old male presented with left medial canthal swelling, accompanied with only mild epiphora. There was no history of dacryocystitis, mid-facial trauma, surgery, or bloody tears. On examination, there was an immobile, subcutaneous, non-inflammatory mass below the medial canthal tendon. Lacrimal irrigation showed blockade at the nasolacrimal duct. A computerized axial tomography (CAT) scan revealed a non-enhancing, low-density, cystic lesion at the inferomedial margin of the orbit. There were no signs of bony erosion, consistent with idiopathic acquired dacryocystocele...
September 4, 2017: Curēus
https://www.readbyqxmd.com/read/29131698/the-anti-inflammatory-and-antioxidant-effects-of-salvia-officinalis-on-lipopolysaccharide-induced-inflammation-in-rats
#12
Umut Kerem Kolac, Mehmet Cengiz Ustuner, Neslihan Tekin, Derya Ustuner, Emine Colak, Emre Entok
Salvia officinalis, which has a high phenolic acid and flavonoid content, is a powerful antioxidant and anti-inflammatory herb. Inflammation plays an important role in the pathophysiology of many diseases and could cause damage by means of oxidative stress. The aim of this study was to investigate the anti-inflammatory and antioxidant activity of S. officinalis formed lipopolysaccharide (LPS)-induced experimental inflammation model. Four- to five-month-old 42 female Wistar albino rats were divided into six groups...
November 13, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/29131633/effect-of-the-helix-coil-transition-in-bovine-skin-gelatin-on-its-associative-phase-separation-with-lysozyme
#13
Yurij A Antonov, Irina Zhuravleva, Alexander Volodine, Paula Moldenaers, Ruth Cardinaels
It is known that the formation of electrostatic polyelectrolyte complexes can induce conformational changes in the interacting macromolecules. However, the opposite effect, namely, that of the helix-coil transition of one of the interacting polyelectrolytes on its associative phase separation with another polyelectrolyte and the possible phase transitions in such systems, has not been determined. Atomic force and confocal laser scanning microscopy, phase analysis, dynamic and electrophoretic light scattering, turbidimetry, absorption, and fluorescence measurements as well as differential scanning calorimetry and rheology were used to study the effect of the helix-coil transition in bovine skin gelatin (Gel) on its associative phase separation with hen egg white lysozyme (Lys) at different temperatures (18-40 °C) and various Lys/Gel weight ratios (0...
November 13, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29123915/global-cerebral-ischemia-with-subsequent-respiratory-arrest-in-a-cat-after-repeated-use-of-a-spring-loaded-mouth-gag
#14
Emily A Hartman, Robert J McCarthy, Mary A Labato
Case summary: A 10-year-old neutered male domestic shorthair cat was evaluated because of signs of stertorous breathing and reverse sneezing of 8 months' duration. A CT scan performed 1 week before evaluation indicated nasopharyngeal stenosis or collapse. Increased respiratory effort, stertorous breathing, coughing, reverse sneezing, bilateral black ocular discharge and mucoid left nasal discharge were noted. Rhinoscopy suggested possible nasopharyngeal stenosis. Balloon dilation was attempted but unsuccessful...
July 2017: JFMS Open Reports
https://www.readbyqxmd.com/read/29115902/open-mouth-jaw-locking-in-cats-a-literature-review-and-use-of-computed-tomography-in-three-cases
#15
Anna E Nutt, Thomas Anderson, Margherita Gracis, Ivan Doran, Chris Warren-Smith, Sorrel J Langley-Hobbs
Case series summary This report summarises and reviews the published cases of open-mouth jaw locking in cats and describes three further cases. Case 1 was a 5-year-old, 5.3 kg male neutered domestic shorthair cat. CT identified changes consistent with temporomandibular joint (TMJ) dysplasia with osseous degenerative changes, and the cat subsequently underwent bilateral partial zygomectomy with bilateral partial coronoidectomy. Case 2 was a 10-year-old, 6.0 kg male neutered Exotic Shorthair. Aside from a fracture of the left maxillary canine tooth crown and absence of the left maxillary fourth premolar tooth, no abnormalities were found on CT scan...
November 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29110603/characterization-of-polyethersulfone-membranes-for-tear-fluid-collection
#16
Q Yang, X Liu, Z Song, L Lin, K Wu
This study evaluated the utility of polyethersulfone membranes (PESms) for tear collection and compared it with two frequently employed approaches: the use of Schirmer test paper (STP) and capillary tube (CaT). STP and PESms of 0.45 and 0.65 μm (PESm65) were examined using scanning electron microscopy (SEM), applied to soak up water and cellular lysates, and employed to collect tear fluid (TF) from rabbits. The proteins in the cellular lysates and TF were characterized through band profiling of SDS-polyacrylamide electrophoresis (PAGE) gels and Western blot analyzing...
November 1, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/29098568/the-signaling-of-protease-activated-receptor-2-activating-peptide-induced-contraction-in-cat-esophageal-smooth-muscle-cells
#17
Hyun Su Ha, Se Eun Lee, Hyun Seok Lee, Gil Hyung Kim, Chan Jong Yoon, Jong Soo Han, Ji-Yun Lee, Uy Dong Sohn
Protease-activated receptors (PARs) are a family of G protein-coupled receptors with a unique activation mechanism involving proteolytic cleavage of the extracellular N-terminal domain of the receptor. PAR2 has a contractile effect on esophageal smooth muscle. We investigate the signaling pathways of the PAR2-activating peptide (PAR2-AP) induced contraction in cat esophageal smooth muscle cells. The length of freshly isolated smooth muscle cells and permeabilized cells from feline esophagus were measured by scanning micrometry, and by confirming molecular basis via western blot analysis...
November 2, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29098440/taxonomic-identification-of-the-thermotolerant-and-fast-growing-fungus-lichtheimia-ramosa-h71d-and-biochemical-characterization-of-the-thermophilic-xylanase-lrxyna
#18
María Teresa Alvarez-Zúñiga, Alejandro Santiago-Hernández, Johan Rodríguez-Mendoza, Jorge E Campos, Patricia Pavón-Orozco, Sergio Trejo-Estrada, María Eugenia Hidalgo-Lara
The zygomycete fungus Lichtheimia ramosa H71D, isolated from sugarcane bagasse compost, was identified by applying phylogenetic analysis based on the DNA sequence of the Internal Transcribed Spacer (ITS), and subsequent secondary structure analysis of ITS2. L. ramosa H71D was able to grow over a wide range of temperatures (25-45 °C), manifesting optimal growth at 37 °C. A 64 kDa xylanase (named LrXynA) was purified from the culture supernatant of L. ramosa H71D grown on 2% carboxymethylcellulose (CMC), as the only carbon source...
November 2, 2017: AMB Express
https://www.readbyqxmd.com/read/29080485/suppression-of-the-release-of-arsenic-from-arsenopyrite-by-carrier-microencapsulation-using-ti-catechol-complex
#19
Ilhwan Park, Carlito Baltazar Tabelin, Kagehiro Magaribuchi, Kensuke Seno, Mayumi Ito, Naoki Hiroyoshi
Arsenopyrite is the most common arsenic-bearing sulfide mineral in nature, and its weathering contributes to acid mine drainage (AMD) formation and the release of toxic arsenic (As). To mitigate this problem, carrier-microencapsulation (CME) using titanium (Ti)-catechol complex (i.e., Ti-based CME) was investigated to passivate arsenopyrite by forming a protective coating. Ti(4+) ion dissolved in sulfuric acid and catechol were used to successfully synthesize Ti(IV) tris-catecholate complex, [Ti(Cat)3](2-), which was stable in the pH range of 5-12...
October 14, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29070448/exposure-to-the-herbicide-2-4-d-produces-different-toxic-effects-in-two-different-phytoplankters-a-green-microalga-ankistrodesmus-falcatus-and-a-toxigenic-cyanobacterium-microcystis-aeruginosa
#20
Erika Berenice Martínez-Ruiz, Fernando Martínez-Jerónimo
The extensive use of 2,4-dichlorophenoxiacetic acid (2,4-D) in agriculture is an important source of pollution to water and soil. Toxicity of commonly used herbicides to non-target, planktonic photosynthetic organisms has not been described completely yet. Therefore, we determined the effect of subinhibitory 2,4-D concentrations on the Chlorophycean alga Ankistrodesmus falcatus and on a toxigenic strain of the cyanobacterium Microcystis aeruginosa. Population growth, photosynthetic pigments, macromolecular biomarkers (carbohydrates, lipids, and protein), and antioxidant enzymes (catalase [CAT], glutathione peroxidase [GPx], and superoxide dismutase [SOD]) were quantified, and the integrated biomarker response (IBR) was calculated...
October 22, 2017: Science of the Total Environment
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