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https://www.readbyqxmd.com/read/28214402/relationship-between-chewing-ability-and-cognitive-impairment-in-the-rural-elderly
#1
Eun-Kyong Kim, Sung Kook Lee, Youn-Hee Choi, Makiko Tanaka, Kimiko Hirotsu, Hyeon Chang Kim, Hee-Kyung Lee, Yun-Sook Jung, Atsuo Amano
OBJECTIVE: Relationship between masticatory function and cognitive impairment had been suggested but still understudied. We investigated the association between chewing ability and cognitive impairment among the elderly living in a rural region. METHODS: A total of 295 elderly individuals aged ≥70 years in a rural city of Korea participated in a cross-sectional study. Trained nurses conducted interviews and assessed chewing ability using gum that changed color based on chewing performance...
February 11, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28213548/effects-of-gelling-agent-and-extracellular-signaling-molecules-on-the-culturability-of-marine-bacteria
#2
Anita Mac Rygaard, Mariane Schmidt Thøgersen, Kristian Fog Nielsen, Lone Gram, Mikkel Bentzon-Tilia
Only 1 % of marine bacteria are currently culturable using standard laboratory procedures and this is a major obstacle for our understanding of the biology of marine microorganisms and for the discovery of novel microbial natural products. Therefore, the purpose of the present study was to investigate if improved cultivation conditions, including the use of an alternative gelling agent, and supplementation with signaling molecules, could improve the culturability of bacteria from seawater. Substituting agar with gellan gum improved viable counts 3 - 40-fold, depending on medium composition and incubation conditions, with a maximum of 6...
February 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28212934/effects-of-basil-seed-gum-cress-seed-gum-and-quince-seed-gum-on-the-physical-textural-and-rheological-properties-of-whipped-cream
#3
Reza Farahmandfar, Maryam Asnaashari, Reza Salahi, Tandis Khosravi Rad
This study focuses on the physical, textural and rheological properties of low fat (LF) whipped cream with 30% fat content developed with Basil seed gum (BSG), Cress seed gum (CSG) and Quince seed gum (QSG) at the concentration of 0.1 and 0.3% (wt/wt) and comparison with high fat (HF) whipped cream sample (55%) as control. Flow curves were analyzed using Herschel bulkey and Carreau models through a fitting procedure. The rheological investigations confirmed that all samples were shear thinning fluid exhibiting a yield stress and thixotropy properties...
February 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28212110/the-impact-of-chewing-gum-on-halitosis-parameters-a-systematic-review
#4
Francisco Wilker Mustafa Gomes Muniz, Stephanie Anagnostopoulos Friedrich, Carina Folgearini Silveira, Cassiano Kuchenbecker Rösing
This study aimed to analyze the impact of chewing gum on halitosis parameters. Three databases were searched with the following focused question: 'Can chewing gum additionally reduce halitosis parameters, such as organoleptic scores and volatile sulfur compounds (VSC), when compared to a control treatment'? Controlled clinical trials presenting at least two halitosis measurements (organoleptic scores and/or VSC) were included. Ten studies were included, and different active ingredients were used. One study was performed using a chewing gum without any active ingredient...
February 17, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28210466/antimicrobial-effects-of-ferula-gummosa-boiss-gum-against-extended-spectrum-%C3%AE-lactamase-producing-acinetobacter-clinical-isolates
#5
Fatemeh Farid Afshar, Parvaneh Saffarian, Hamideh Mahmoodzadeh Hosseini, Fereshteh Sattarian, Mohsen Amin, Abbas Ali Imani Fooladi
BACKGROUND AND OBJECTIVES: Acinetobacter spp. are important causes of nosocomial infections. They possess various antibiotic resistance mechanisms including extended spectrum beta lactamases (ESBLs). The aim of this study was to determine antibiotic resistance profile of Acinetobacter clinical isolates especially among ESBL-producing strains and to investigate the antimicrobial effects of oleo-gum-resin extract and essential oil of Ferula gummosa Boiss. MATERIALS AND METHODS: 120 Acinetobacter strains were isolated from various clinical samples of hospitalized patients in Baqiyatallah hospital, Tehran during 2011-2012...
August 2016: Iranian Journal of Microbiology
https://www.readbyqxmd.com/read/28210452/ewing-sarcoma-of-the-oral-cavity-a-review
#6
REVIEW
Maria Margaix-Muñoz, José Bagán, Rafael Poveda-Roda
OBJECTIVES: A review is made of the clinical, diagnostic, therapeutic and survival characteristics of Ewing sarcoma (ES) of the oral cavity. MATERIAL AND METHODS: A systematic literature search was carried out, with restrictions referred to time (1960-2014), language (English and Spanish) and type of study (case reports, letters, datasets, reviews). The following MeSH terms and boolean operators were used: Ewing AND Sarcoma AND [tongue, jaw, maxilla, cheek, condyle OR temporomandibular, floor AND mouth, gum OR gingiva, palate OR palatal, lip, uvula, head AND neck]...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210437/oral-manifestation-and-salivary-changes-in-renal-patients-undergoing-hemodialysis
#7
Marieh Honarmand, Leila Farhad-Mollashahi, Alireza Nakhaee, Fahimeh Sargolzaie
BACKGROUND: Salivary changes in hemodialysis patients may result in various oral manifestations. This research intended to determine oral manifestations and some salivary markers in hemodialysis patients. MATERIAL AND METHODS: This cross-sectional study was conducted on 30 hemodialysis patients (the patient group) and 30 healthy individuals (the control group). Saliva urea and calcium levels and pH values of the participants were measured, and oral manifestations such as pale mucosa, xerostomia, halitosis, changes in the sense of taste, increased calculus formation, gingival bleeding, etc...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28209191/knowledge-of-caries-risk-factors-indicators-among-japanese-and-irish-adult-patients-with-different-socio-economic-profiles-a-cross-sectional-study
#8
Makiko Nishi, Máiréad Harding, Virginia Kelleher, Helen Whelton, Finbarr Allen
BACKGROUND: A previous study has shown deficient knowledge of caries risk factors/indicators in a Japanese adult population regarded to have a high interest in preventive dentistry. No prior research has investigated caries risk knowledge in an Irish adult population. We hypothesise there may be unexpected differences or similarities in knowledge across countries with similar levels of economic development when comparing groups with different socio-economic and cultural profiles. Understanding what influences knowledge is important for the development of effective and efficient caries prevention strategies...
February 16, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28203644/optimization-of-the-functional-characteristics-pasting-and-rheological-properties-of-pearl-millet-based-composite-flour
#9
Olugbenga Olufemi Awolu
Optimisation of composite flour comprising pearl millet, kidney beans and tigernut with xanthan gum was evaluated for rheological evaluations. The functional properties of the composite flour were optimized using optimal design of response surface methodology. The optimum blends, defined as blends with overall best functional characteristics were run 3 (75.956% pearl millet, 17.692% kidney beans, 6.352% tigernut flours), run 7 (85.000% pearl millet, 10.000% kidney beans, 5.000% tigernut flours) and run 13 (75...
February 2017: Heliyon
https://www.readbyqxmd.com/read/28199326/a-mathematical-model-of-calcium-dynamics-in-hsy-cells
#10
Jung Min Han, Akihiko Tanimura, Vivien Kirk, James Sneyd
Saliva is an essential part of activities such as speaking, masticating and swallowing. Enzymes in salivary fluid protect teeth and gums from infectious diseases, and also initiate the digestion process. Intracellular calcium (Ca2+) plays a critical role in saliva secretion and regulation. Experimental measurements of Ca2+ and inositol trisphosphate (IP3) concentrations in HSY cells, a human salivary duct cell line, show that when the cells are stimulated with adenosine triphosphate (ATP) or carbachol (CCh), they exhibit coupled oscillations with Ca2+ spike peaks preceding IP3 spike peaks...
February 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28199221/on-the-high-pressure-phase-stability-and-elastic-properties-of-%C3%AE-titanium-alloys
#11
Dean Smith, Oliver Joris, Ananthi Sankaran, Hannah Weekes, Dan Bull, Timothy Prior, David Dye, Daniel Errandonea, John Proctor
We have studied the compressibility and stability of different β-titanium alloys at high pressure, including binary Ti-Mo, Ti-24Nb-4Zr-8Sn (Ti2448) and Ti-36Nb-2Ta-0.3O (gum metal). We observed stability of the β phase in these alloys to 40 GPa, well into the ω phase region in the P-T diagram of pure titanium. Gum metal was pressurised above 70 GPa and forms a phase with a crystal structure similar to the η phase of pure Ti. The bulk moduli determined for the different alloys range from 97 ± 3 GPa (Ti2448) to 124 ± 6 GPa (Ti-16...
February 15, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28196869/structural-insights-unravel-the-zymogenic-mechanism-of-the-virulence-factor-gingipain-k-from-porphyromonas-gingivalis-a-causative-agent-of-gum-disease-from-the-human-oral-microbiome
#12
Anja Pomowski, Isabel Uson, Zuzanna M Nowakowska, Florian Veillard, Maryta N Sztukowska, Tibisay Guevara, Theodoros Goulas, Danuta Mizgalska, Magdalena L Nowak, Barbara A Potempa, James A Huntington, Jan Potempa, F Xavier Gomis-Ruth
Skewing of the human oral microbiome causes dysbiosis and preponderance of bacteria such as Porphyromonas gingivalis, the main etiological agent of periodontitis. P. gingivalis secretes proteolytic gingipains (Kgp and RgpA/B) as zymogens inhibited by a pro-domain that is removed during extracellular activation. Unraveling the molecular mechanism of Kgp zymogenicity is essential to design inhibitors blocking its activity. Here, we found that the isolated 209-residue Kgp pro-domain is a boomerang-shaped all-β protein similar to the RgpB pro-domain...
February 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28196414/polyelectrolyte-fiber-assembly-of-plant-derived-spider-silk-like-proteins
#13
Congyue Annie Peng, Julia A Russo, Todd A Lyda, William Richard Marcotte
Spider dragline silk is a proteinaceous material that combines superior toughness and biocompatibility, a promising bio-material. The distinct protein structure and the fiber formation process contribute to the superior toughness of dragline silk. Previously, we have produced recombinant spider silk-like proteins in transgenic tobacco that are readily purified from plant extracts. The plant-derived spidroin-like proteins consisted of native major ampullate spidroin 1 or spidroin 2 N- and C-termini flanking 8, 16, or 32 copies of their respective consensus block repeats (mini-spidroins)...
February 14, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28196382/bromelain-loading-and-release-from-a-hydrogel-formulated-using-alginate-and-arabic-gum
#14
Janaína Artem Ataide, Letícia Caramori Cefali, Marcia de Araujo Rebelo, Lívia Genovez Spir, Elias Basile Tambourgi, Angela Faustino Jozala, Marco Vinícius Chaud, Edgar Silveira, Xiaochen Gu, Priscila Gava Mazzola
An ideal wound dressing ensures a moist environment around the wound area and absorbs exudates from the wound surface. Topical application of bromelain to incised wounds has been shown to reprogram the wound microenvironment to promote effective tissue repair. Combining the characteristics of hydrogels and bromelain is therefore of great interest. Herein, we describe the development of a hydrogel, formulated using alginate and Arabic gum, for bromelain loading and release. The hydrogel formulation was evaluated using response surface methodology, considering the pH value and the concentration of alginate and Arabic gum...
February 14, 2017: Planta Medica
https://www.readbyqxmd.com/read/28194076/outcome-of-cyclosporine-monotherapy-in-patients-of-aplastic-anemia-experience-of-a-tertiary-care-hospital-in-eastern-india
#15
Prakas Kumar Mandal, Suvraneel Baul, Tuphan Kanti Dolai, Rajib De, Prantar Chakrabarti
INTRODUCTION: Immune suppression is a crucial pillar for treatment of aplastic anemia. Cyclosporine monotherapy is an easily available, affordable therapeutic option with good safety profile. METHODS AND MATERIALS: This prospective study was conducted over a period of 2 years from June 2012 to July 2014. The diagnosis and response to treatment of aplastic anemia was established as per published criteria. Follow up was done at 3 and 6 months in order to assess the response...
March 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28192977/matrix-assisted-laser-desorption-ionization-mass-fingerprinting-for-identification-of-acacia-gum-in-microsamples-from-works-of-art
#16
Clara Granzotto, Ken Sutherland
This paper reports an improved method for the identification of Acacia gum in cultural heritage samples using matrix assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOF MS) after enzymatic digestion of the polysaccharide component. The analytical strategy was optimized using a reference Acacia gum (gum arabic, sp. A. senegal) and provided an unambiguous MS profile of the gum, characterized by specific and recognized oligosaccharides, from as little as 0.1 μg of material. The enhanced experimental approach with reduced detection limit was successfully applied to the analysis of naturally aged (∼80 year) gum arabic samples, pure and mixed with lead white pigment, and allowed the detection of gum arabic in samples from a late painting (1949/1954) by Georges Braque in the collection of the Art Institute of Chicago...
February 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28192138/isolation-biochemical-characterization-and-antibiofilm-effect-of-a-lectin-from-the-marine-sponge-aplysina-lactuca
#17
Rômulo Farias Carneiro, Paulo Henrique Pinheiro de Lima Jr, Renata Pinheiro Chaves, Rafael Pereira, Anna Luísa Pereira, Mayron Alves de Vasconcelos, Ulisses Pinheiro, Edson Holanda Teixeira, Celso Shiniti Nagano, Alexandre Holanda Sampaio
A new lectin was isolated from the marine sponge Aplysina lactuca (ALL) by combining ammonium sulfate precipitation and affinity chromatography on guar gum matrix. ALL showed affinity for the disaccharides α-lactose, β-lactose and lactulose (Ka=12.5, 31.9 and 145.5M(-1), respectively), as well as the glycoprotein porcine stomach mucin. Its hemagglutinating activity was stable in neutral acid pH values and temperatures below 60°C. ALL is a dimeric protein formed by two covalently linked polypeptide chains...
February 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28191980/interaction-mechanisms-between-air-bubble-and-molybdenite-surface-impact-of-solution-salinity-and-polymer-adsorption
#18
Lei Xie, Jingyi Wang, Duowei Yuan, Chen Shi, Xin Cui, Hao Zhang, Qi Liu, Qingxia Liu, Hongbo Zeng
The surface characteristics of molybdenite (MoS2) such as wettability and surface interactions have attracted much research interest in a wide range of engineering applications, such as froth flotation. In this work, a bubble probe atomic force microscope (AFM) technique was employed to directly measure the interaction forces between an air bubble and molybdenite mineral surface before/after polymer (i.e., guar gum) adsorption treatment. The AFM imaging showed that the polymer coverage on the surface of molybdenite could achieve ~5...
February 13, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28188449/xylitol-production-by-genetically-modified-industrial-strain-of-saccharomyces-cerevisiae-using-glycerol-as-co-substrate
#19
Anushree B Kogje, Anand Ghosalkar
Xylitol is commercially used in chewing gum and dental care products as a low calorie sweetener having medicinal properties. Industrial yeast strain of S. cerevisiae was genetically modified to overexpress an endogenous aldose reductase gene GRE3 and a xylose transporter gene SUT1 for the production of xylitol. The recombinant strain (XP-RTK) carried the expression cassettes of both the genes and the G418 resistance marker cassette KanMX integrated into the genome of S. cerevisiae. Short segments from the 5' and 3' delta regions of the Ty1 retrotransposons were used as homology regions for integration of the cassettes...
February 10, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28183656/facile-synthesis-of-carbon-dot-and-residual-carbon-nanobeads-implications-for-ion-sensing-medicinal-and-biological-applications
#20
Rohit Ranganathan Gaddam, Sudip Mukherjee, Neelambaram Punugupati, D Vasudevan, Chitta Ranjan Patra, Ramanuj Narayan, Raju Vsn Kothapalli
Synthesis of carbon dots (Cdots) via chemical route involves disintegration of carbon materials into nano-domains, wherein, after extraction of Cdots, the remaining carbon material is discarded. The present work focuses on studying even the leftover carbon residue namely, carbon nanobeads (CNBs) as an equally important material for applications on par with that of carbon dot. It employs oxidative treatment of carbonised gum olibanum resin (GOR) to produce the carbons namely Cdots and CNBs (as the residue). The Cdots (~5-10nm) exhibit blue-green fluorescence with an optical absorption at ~300nm unlike the CNBs (40-50nm) which fail to exhibit fluorescence...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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