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https://www.readbyqxmd.com/read/28709485/biofilm-colonization-of-mycobacterium-abscessus-new-threat-in-hospital-acquired-surgical-site-infection
#1
Roumi Ghosh, Soumen Das, Harish Kela, Asmita De, Jayeeta Haldar, Prasanta Kumar Maiti
INTRODUCTION: Rapidly growing non-tuberculous mycobacteria (NTM) are hazardous cause of post-operative soft tissue infection leading to nosocomial outbreaks following various surgical procedures, especially laparoscopic surgeries using heat sensitive, non-autoclavable surgical instruments. METHODOLOGY: Surgery department of our hospital noticed increase in rate of post-laparoscopic abdominal port site infection (PSI) and informed the Microbiology Department. A prospective investigational study of defined cases with the aim of source tracing and formulation of infection control measures was initiated...
July 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28702019/functional-resilience-and-response-to-a-dietary-additive-kefir-in-models-of-foregut-and-hindgut-microbial-fermentation-in-vitro
#2
Gabriel de la Fuente, Eleanor Jones, Shann Jones, Charles J Newbold
Stability in gut ecosystems is an important area of study that impacts on the use of additives and is related with several pathologies. Kefir is a fermented milk drink made with a consortium of yeast and bacteria as a fermentation starter, of which the use as additive in companion and livestock animals has increased in the last few years. To investigate the effect of kefir milk on foregut and hindgut digestive systems, an in vitro approach was followed. Either rumen fluid or horse fecal contents were used as a microbial inoculate and the inclusion of kefir (fresh, autoclaved, or pasteurized) was tested...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28699822/a-bioencapsulation-and-drying-method-increases-shelf-life-and-efficacy-of-metarhizium-brunneum-conidia
#3
Michael Przyklenk, Marina Vemmer, Miriam Hanitzsch, Anant Patel
This study reports the development of encapsulated and dried entomopathogenic fungus Metarhiuzm brunneum with reduced conidia content, increased conidiation, a high drying survival and enhanced shelf life. Dried beads prepared with the fillers corn starch, potato starch, carboxymethylcellulose or autoclaved baker's yeast, showed enhanced survival with increasing filler content. The maximum survival of 82% was found for beads with 20% corn starch at <0.1 water activity. While increasing starch content inhibits the conidiation, autoclaved baker´s yeast and a combination with starch enhanced the conidiation to 1...
July 12, 2017: Journal of Microencapsulation
https://www.readbyqxmd.com/read/28689911/effect-of-grinding-and-polishing-on-roughness-and-strength-of-zirconia
#4
Waad Khayat, Najla Chebib, Matthew Finkelman, Samer Khayat, Ala Ali
STATEMENT OF PROBLEM: The clinical applications of high-translucency monolithic zirconia restorations have increased. Chairside and laboratory adjustments of these restorations are inevitable, which may lead to increased roughness and reduced strength. The influence of grinding and polishing on high-translucency zirconia has not been investigated. PURPOSE: The purpose of this in vitro study was to compare the roughness averages (Ra) of ground and polished zirconia and investigate whether roughness influenced strength after aging...
July 7, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28688324/growing-chlorella-vulgaris-on-thermophilic-anaerobic-digestion-swine-manure-for-nutrient-removal-and-biomass-production
#5
Xiang-Yuan Deng, Kun Gao, Ren-Chuan Zhang, Min Addy, Qian Lu, Hong-Yan Ren, Paul Chen, Yu-Huan Liu, Roger Ruan
Liquid swine manure was subjected to thermophilic anaerobic digestion, ammonia stripping and centrifugation in order to increase the available carbon sources and decrease the ammonia concentration and turbidity. Chlorella vulgaris (UTEX 2714) was grown on minimally diluted (2×, 3× and 4×) autoclaved and non-autoclaved pretreated anaerobic digestion swine manure (PADSM) in a batch-culture system for 7days. Results showed that C. vulgaris (UTEX 2714) grew best on 3× PADSM media, and effectively removed NH4(+)-N, TN, TP and COD by 98...
June 26, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28687186/evaluation-of-a-new-packaging-process-for-non-autoclavable-endoscopes-results-for-the-first-100-microbiological-samples
#6
C Minebois, P Saviuc, J Shum, P Tuvignon, I Pelloux, M-P Brenier-Pinchart, C Landelle, M-R Mallaret
BACKGROUND: A new process for packaging endoscopes (SureStore(®), Medical Innovations Group) immediately after they exit from washing and disinfection in an automated endoscope reprocessor (AER) allows for endoscopes to be stored for up to 15 days. AIM: To describe the microbiological quality of samples from gastrointestinal endoscopes following this process. METHODS: Three-month prospective study using microbiological sampling from a stock of 38 gastrointestinal endoscopes carried out in a French University Hospital...
July 4, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28677630/synthesis-and-modification-of-clinoptilolite
#7
REVIEW
Pavlina Ambrozova, Jindrich Kynicky, Tomas Urubek, Vinh Dinh Nguyen
Clinoptilolite is a natural mineral with exceptional physical characteristics resulting from its special crystal structure, mainstreamed into a large zeolite group called heulandites. An overall view of the research related to the synthesis, modification and application of synthetic clinoptilolite is presented. A single phase of clinoptilolite can be hydrothermally synthesized for 1-10 days in an autoclave from various silica, alumina, and alkali sources with initial Si/Al ratio from 3.0 to 5.0 at a temperature range from 120 to 195 °C...
July 4, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28667399/chemical-composition-and-morphology-study-of-bovine-enamel-submitted-to-different-sterilization-methods
#8
P S Viana, M O Orlandi, A C Pavarina, A L Machado, C E Vergani
OBJECTIVES: The morphology and chemical composition of enamel submitted to different sterilization methods was studied. METHODS: X-ray photoelectron spectroscopy (XPS), field emission gun scanning electron microscopy (FEG-SEM), and energy-dispersive X-ray spectroscopy (EDS) were performed to evaluate 50 bovine enamel specimens sterilized using four methods: microwaving (MI), gamma irradiation (GI), ethylene oxide (EO), and steam autoclave (SA). Non-sterilized specimens were used as control...
June 30, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28663153/bioconversion-of-shrimp-waste-penaeus-merguiensis-using-lactic-acid-fermentation-an-alternative-procedure-for-chemical-extraction-of-chitin-and-chitosan
#9
Fatemeh Sedaghat, Morteza Yousefzadi, Hojjat Toiserkani, Sohrab Najafipour
Chitin extraction from shrimp wastes by biological treatment, using the Pseudomonas aeruginosa was a positive and simple method. In order to look for the optimal conditions, the wastes were incubated at 30°C and 100rpm in different glucose (0%, 10%, 15% and 20%) and inoculation (10%, 15% and 20%) concentrations for 4 and 6days. At the end of fermentation, Protease activity was investigated at different temperatures and temperature 50°C was considered as the optimum. The results obtained also showed a direct relationship between the concentration of different parameters and deproteinization and demineralization rates, so that the optimal conditions were 20% glucose, 20% inoculation and 6days fermentation...
June 27, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28660737/ammonothermal-synthesis-of-crystalline-oxonitride-perovskites-lntaon2-ln%C3%A2-%C3%A2-la-ce-pr-nd-sm-gd
#10
Niklas Cordes, Wolfgang Schnick
The perovskite type oxonitridotantalates LnTaON2 with Ln = La, Ce, Pr, Nd, Sm and Gd were synthesized by the ammonothermal method employing custom-built autoclaves made of nickel-based superalloy. Metal powders were reacted with NaOH and NaN3 as mineralizers under supercritical conditions with purified ammonia at temperatures of 870-1070 K and pressures in the range 150-300 MPa. Crystal structures and the space groups were determined using powder X-ray diffraction and refined by the Rietveld method. The refined lattice parameters are for LaTaON2 (a = 5...
June 29, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28651042/effect-of-dephytinization-by-fermentation-and-hydrothermal-autoclaving-treatments-on-the-antioxidant-activity-dietary-fiber-and-phenolic-content-of-oat-bran
#11
H Özkaya, B Özkaya, B Duman, S Turksoy
Fermentation and hydrothermal methods were tested to reduce the phytic acid (PA) content of oat bran, and the effects of these methods on the dietary fiber (DF) and total phenolic (TP) contents as well as the antioxidant activity (AA) were also investigated. Fermentation with 6% yeast and for 6 h resulted in 88.2% reduction in PA content, while it only resulted in 32.5% reduction in the sample incubated for 6 h without yeast addition. The PA loss in autoclaved oat bran sample (1.5 h, pH 4.0) was 95.2% while it was 41...
July 5, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28647882/leaching-of-phthalate-esters-from-different-drinking-stuffs-and-their-subsequent-biodegradation
#12
Muhammad Ali Surhio, Farah N Talpur, Shafi M Nizamani, Marvi Kanwal Talpur, Hassan Imran Afridi, Abid Ali Khaskheli, Shazia Bhurgri, Junaid Ali Surhio
Phthalate esters (PAEs) are mainly used as plasticizers, and their release in the environment during the manufacturing, use, and disposal has caused serious environmental health concerns, since some of them are suspected to be mutagens, hepatotoxic agents, and carcinogens. In the present study, leaching of PAEs from different drinking stuffs (water cooler, mineral water bottles) exposed to sunlight and baby feeders subjected to different heating treatments (boiling, autoclave and oven) was studied. Results showed that a total of 10 PAEs were leached and identified...
June 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28647224/does-artificial-aging-affect-mechanical-properties-of-cad-cam-composite-materials
#13
Ferhan Egilmez, Gulfem Ergun, Isil Cekic-Nagas, Pekka K Vallittu, Lippo V J Lassila
PURPOSE: The purpose of this study was to determine the flexural strength and Weibull characteristics of different CAD/CAM materials after different in vitro aging conditions. METHODS: The specimens were randomly assigned to one of the six in vitro aging conditions: (1) water storage (37°C, 3 weeks), (2) boiling water (24h), (3) hydrochloric acid exposure (pH: 1.2, 24h), (4) autoclave treatment (134°C, 200kPa, 12h), (5) thermal cycling (5000 times, 5-55°C), (6) cyclic loading (100N, 50,000 cycles)...
June 21, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28642792/infection-control-measures-in-private-dental-clinics-in-lebanon
#14
Jihad Dagher, Charles Sfeir, Ahmad Abdallah, Zeina Majzoub
PURPOSE: Evaluate infection control knowledge, attitude, and practice in Lebanese private dental clinics. MATERIALS AND METHODS: A survey including 46 questions related to routine safety procedures was sent to 1150 Lebanese dentists between July 1st and 2nd, 2015. The study sample was selected from the database of registered dentists based on a proportional random sampling ensuring equitable representation of the 5 geographic regions of Lebanon. A subset of 29 questions was used to generate an overall score of compliance (excellent, good, fair, and poor)...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28638559/comparative-evaluation-of-anti-microbial-effects-of-triple-antibiotic-paste-and-amox-and-its-derivatives-against-e-faecalis-an-in-vitro-study
#15
Manjeet Kaur, Shrikant Kendre, Parmod Gupta, Navneet Singh, Harsimran Sethi, Neha Gupta, Rushil Acharya
BACKGROUND: Enterococcus faecalis is a microorganism commonly detected in asymptomatic, persistent endodontic infections. Triple antibiotic paste has stood the test of time as a proven antibiotic combination against E. Faecalis. However, problems with this include staining of teeth and standardization of the preparation. Thus, the search for better alternatives and better preparation techniques is still on. AIM: To observe the potential of combinations [(Amoxicillin+ Metronidazole, Amoxicillin Clavulanic Acid + Metronidazole; Amoxicillin and Cloxacillin + Metronidazole)] over Triple Antibiotic Paste...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28634139/ocular-disposition-of-ciprofloxacin-from-topical-pegylated-nanostructured-lipid-carriers-effect-of-molecular-weight-and-density-of-poly-ethylene-glycol
#16
Sai Prachetan Balguri, Goutham R Adelli, Karthik Yadav Janga, Prakash Bhagav, Soumyajit Majumdar
Ciprofloxacin (CIP) is an antibacterial agent prescribed for the treatment of ocular infections. The objective of the present project is to investigate the effect of surface PEG functionalization of the Nano structured lipid carriers (NLCs) on formulation stability, ocular penetration and distribution. CIP NLCs were tested with different molecular weight (poly ethylene glycol) PEGs ranging from (2K to 20K) grafted onto the phospholipid and with different chain lengths (14-18 carbons) of phospholipids derivatized with PEG-2K...
June 17, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28628976/effective-enzymatic-in-situ-saccharification-of-bamboo-shoot-shell-pretreated-by-dilute-alkalic-salts-sodium-hypochlorite-sodium-sulfide-pretreatment-under-the-autoclave-system
#17
Gang-Gang Chong, Yu-Cai He, Qiu-Xiang Liu, Xiao-Qin Kou, Xiao-Jun Huang, Jun-Hua Di, Cui-Luan Ma
In this study, dilute alkali salts (0.6% NaClO, 0.067% Na2S) pretreatment at 10% sulfidity under the autoclave system at 120°C for 40min was used for pretreating bamboo shoot shell (BSS). Furthermore, FT-IR, XRD and SEM were employed to characterize the changes in the cellulose structural characteristics (porosity, morphology, and crystallinity) of the pretreated BSS solid residue. After 72h, the reducing sugars and glucose from the enzymatic in situ hydrolysis of 50g/L pretreated BSS in dilute NaClO/Na2S media could be obtained at 31...
October 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28624775/complexing-agents-and-ph-influence-on-chemical-durability-of-type-i-moulded-glass-containers
#18
Alberto Biavati, Michele Poncini, Arianna Ferrarini, Nicola Favaro, Martina Scarpa, Marta Vallotto
Among the factors that affect the glass surface chemical durability, pH and complexing agents presence in aqueous solution have the main role (1). Glass surface attack can be also related to the delamination issue with glass particles appearance in the pharmaceutical preparation. A few methods to check for glass containers delamination propensity and some control guidelines have been proposed (2,3). The present study emphasizes the possible synergy between a few complexing agents with pH on the borosilicate glass chemical durability...
June 16, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28620618/histopathological-and-reproductive-evaluation-in-male-rats-fed-jatropha-curcas-seed-cake-with-or-without-alkaline-hydrolysis-and-subjected-to-heat-treatment
#19
Laiane Teixeira Sousa Moura, Domenica Palomaris Mariano Souza, Simone Mendonça, José Antônio de Aquino Ribeiro, Luciano Fernandes Sousa, Adriano Tony Ramos, Paulo César Maiorka, Vera Lúcia de Araújo, Viviane Mayumi Maruo
Jatropha curcas cake, a by-product of biodiesel production, is rich in protein and has potential to be used in livestock feed; however, the presence of antinutritional factors and phorbol esters limits its use. Thus, this study investigated toxicological and reproductive effects in male Wistar rats after subchronic exposure to J. curcas cake subjected to detoxification procedures. Rats were divided into seven groups (n = 10) and treated for 60 days. The control group received commercial feed, while experimental groups received a diet containing 5% J...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28619615/evaluation-of-antimicrobial-activity-of-association-of-chlorhexidine-to-photosensitizer-used-in-photodynamic-therapy-in-root-canals-infected-by-enterococcus-faecalis
#20
Matheus Albino Souza, Guilherme Lima, Bianca Pazinatto, Karolina Frick Bischoff, Huriel Scartazzini Palhano, Doglas Cecchin
INTRODUCTION: The aim of the present study was to evaluate, in vitro, the influence of the addition of chlorhexidine to photosensitiser in the antimicrobial activity of photodynamic therapy in root canals infected by Enterococcus faecalis. METHODS: the root canals of 50 single-rooted human extracted teeth were enlarged up to a file F3 of Pro-Taper system, autoclaved, inoculated with Enterococcus faecalis and incubated for 14 days. The samples were divided into five groups (n=10) according to the protocol of decontamination: G1 (control group) - no procedure was performed; G2-photosensitiser (0...
June 12, 2017: Photodiagnosis and Photodynamic Therapy
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